/* Main.css */
:root {
    /* Professional Color Palette */
    --color-primary: #06b6d4;
    --color-primary-dark: #0891b2;
    --color-primary-light: #22d3ee;
    --color-secondary: #8b5cf6;
    --color-accent: #f59e0b;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;

    /* Grayscale */
    --color-dark: #0f172a;
    --color-dark-alt: #1e293b;
    --color-gray: #475569;
    --color-gray-light: #cbd5e1;
    --color-light: #f8fafc;
    --color-white: #ffffff;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #06b6d4 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-code: 'Fira Code', 'Courier New', monospace;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.3);

    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
}

/* reset & base styles */

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-primary);
    background: var(--color-dark);
    color: var(--color-light);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* custom scrollbar */

/* webkit browsers (chrome, safari, edge) */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--color-dark-alt);
    border-radius: 10px;
}

/* scrollbar thumb styles will be dynamically updated by javascript */
::-webkit-scrollbar-thumb {
    border-radius: 10px;
    border: 2px solid var(--color-dark-alt);
    transition: all 0.3s ease;
}

/* firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: #06b6d4 var(--color-dark-alt);
}

/* animated background */

/* Mobile Gradient Mesh - Hidden on desktop */
.gradient-mesh {
    display: none;
}

/* Mobile Scan Lines - Hidden on desktop */
.scan-lines {
    display: none;
}

@media (max-width: 768px) {

    /* Gradient Mesh Animation */
    .gradient-mesh {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 0;
        pointer-events: none;
        overflow: hidden;
    }

    .gradient-mesh .blob {
        position: absolute;
        border-radius: 50%;
        filter: blur(60px);
        opacity: 0.5;
        mix-blend-mode: screen;
    }

    .gradient-mesh .blob-1 {
        width: 300px;
        height: 300px;
        background: radial-gradient(circle, rgba(6, 182, 212, 0.6) 0%, transparent 70%);
        top: -100px;
        left: -100px;
        animation: meshFloat1 12s ease-in-out infinite;
    }

    .gradient-mesh .blob-2 {
        width: 350px;
        height: 350px;
        background: radial-gradient(circle, rgba(139, 92, 246, 0.5) 0%, transparent 70%);
        top: 30%;
        right: -150px;
        animation: meshFloat2 15s ease-in-out infinite;
    }

    .gradient-mesh .blob-3 {
        width: 280px;
        height: 280px;
        background: radial-gradient(circle, rgba(236, 72, 153, 0.4) 0%, transparent 70%);
        bottom: 10%;
        left: -80px;
        animation: meshFloat3 18s ease-in-out infinite;
    }

    .gradient-mesh .blob-4 {
        width: 250px;
        height: 250px;
        background: radial-gradient(circle, rgba(6, 182, 212, 0.4) 0%, transparent 70%);
        bottom: -50px;
        right: 10%;
        animation: meshFloat4 14s ease-in-out infinite;
    }

    @keyframes meshFloat1 {

        0%,
        100% {
            transform: translate(0, 0) scale(1);
        }

        33% {
            transform: translate(80px, 100px) scale(1.1);
        }

        66% {
            transform: translate(40px, 50px) scale(0.95);
        }
    }

    @keyframes meshFloat2 {

        0%,
        100% {
            transform: translate(0, 0) scale(1);
        }

        33% {
            transform: translate(-60px, 80px) scale(1.15);
        }

        66% {
            transform: translate(-100px, -40px) scale(0.9);
        }
    }

    @keyframes meshFloat3 {

        0%,
        100% {
            transform: translate(0, 0) scale(1);
        }

        33% {
            transform: translate(100px, -60px) scale(1.05);
        }

        66% {
            transform: translate(50px, -100px) scale(1.1);
        }
    }

    @keyframes meshFloat4 {

        0%,
        100% {
            transform: translate(0, 0) scale(1);
        }

        33% {
            transform: translate(-40px, -80px) scale(1.1);
        }

        66% {
            transform: translate(60px, -40px) scale(0.95);
        }
    }

    /* Scan Lines Animation */
    .scan-lines {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 1;
        pointer-events: none;
        overflow: hidden;
    }

    .scan-lines::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: repeating-linear-gradient(0deg,
                transparent 0px,
                transparent 2px,
                rgba(6, 182, 212, 0.03) 2px,
                rgba(6, 182, 212, 0.03) 4px);
    }

    .scan-lines::after {
        content: '';
        position: absolute;
        top: -100%;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(180deg,
                transparent 0%,
                rgba(6, 182, 212, 0.08) 50%,
                transparent 100%);
        animation: scanMove 8s linear infinite;
    }

    @keyframes scanMove {
        0% {
            transform: translateY(0);
        }

        100% {
            transform: translateY(200%);
        }
    }
}

.animated-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
    top: -200px;
    left: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--color-secondary) 0%, transparent 70%);
    bottom: -150px;
    right: -150px;
    animation-delay: 7s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 14s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(100px, -100px) scale(1.1);
    }

    66% {
        transform: translate(-100px, 100px) scale(0.9);
    }
}

/* hero section */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    position: relative;
}

.hero-content {
    max-width: 900px;
    width: 100%;
}

.hero-text {
    text-align: center;
    will-change: transform, opacity;
}

.greeting {
    font-size: 1.125rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    font-family: var(--font-code);
}

.wave {
    display: inline-block;
    animation: wave 2s ease-in-out infinite;
}

@keyframes wave {

    0%,
    100% {
        transform: rotate(0deg);
    }

    25% {
        transform: rotate(14deg);
    }

    75% {
        transform: rotate(-14deg);
    }
}

/* Terminal-style greeting */
.terminal-greeting {
    display: inline-flex;
    align-items: center;
    gap: 0;
}

.terminal-text {
    display: inline-block;
    overflow: hidden;
    white-space: nowrap;
    border-right: none;
    width: 0;
    animation: typing 2.5s steps(44) 0.5s forwards;
}

.terminal-cursor {
    display: inline-block;
    color: var(--color-primary);
    animation: blink 0.8s step-end infinite;
    font-weight: 300;
    margin-left: -1px;
}

@keyframes typing {
    from {
        width: 0;
    }

    to {
        width: 27ch;
    }
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.animated-name .letter {
    display: inline-block;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    cursor: pointer;
    background: inherit;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    user-select: none;
    -webkit-user-select: none;
}

.animated-name .letter.space {
    width: 0.3em;
}

.animated-name .letter:hover {
    transform: translateY(-20px) scale(1.2) rotate(5deg);
    filter: hue-rotate(180deg) brightness(1.5) drop-shadow(0 0 10px rgba(6, 182, 212, 0.8));
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--color-gray-light);
    margin-bottom: var(--spacing-sm);
}

.highlight {
    color: var(--color-primary);
    font-weight: 600;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-gray-light);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    z-index: -1;
}

.btn:hover::before {
    transform: translateX(0);
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 0 30px rgba(6, 182, 212, 0.5), 0 8px 25px rgba(6, 182, 212, 0.3);
}

.btn-primary:hover i {
    animation: btnIconBounce 0.5s ease;
}

@keyframes btnIconBounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-3px);
    }
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--color-light);
    border: 2px solid var(--glass-border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.2), 0 8px 20px rgba(0, 0, 0, 0.3);
    background: rgba(6, 182, 212, 0.05);
}

.btn-secondary:hover i {
    animation: btnIconBounce 0.5s ease;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-primary);
    border-radius: 12px;
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 2px;
    animation: scroll 2s ease-in-out infinite;
}

@keyframes scroll {

    0%,
    100% {
        top: 8px;
        opacity: 1;
    }

    50% {
        top: 20px;
        opacity: 0.5;
    }
}

/* phone indicator for mobile */
.phone {
    display: none;
    position: relative;
    width: 32px;
    height: 56px;
    border: 2px solid var(--color-primary);
    border-radius: 8px;
}

.phone::before {
    content: '';
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 10px;
    background: var(--color-primary);
    border-radius: 2px;
    animation: phoneScroll 2s ease-in-out infinite;
}

/* small notch at top of phone */
.phone::after {
    content: '';
    position: absolute;
    top: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 1px;
}

@keyframes phoneScroll {

    0%,
    100% {
        top: 12px;
        opacity: 1;
    }

    50% {
        top: 32px;
        opacity: 0.5;
    }
}

/* show/hide based on screen size */
.desktop-only {
    display: block;
}

.year-filter-buttons.desktop-only {
    display: flex;
}

.mobile-only {
    display: none;
}

/* floating navigation */

.floating-nav {
    position: fixed;
    top: 50%;
    right: var(--spacing-lg);
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.nav-dot {
    width: 12px;
    height: 12px;
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: 50%;
    transition: all var(--transition-base);
    position: relative;
    cursor: pointer;
}

.nav-dot::before {
    content: attr(data-section);
    position: absolute;
    right: calc(100% + var(--spacing-md));
    top: 50%;
    transform: translateY(-50%);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.nav-dot:hover::before,
.nav-dot.active::before {
    opacity: 1;
}

.nav-dot.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
    animation: navDotPulse 2s ease-in-out infinite;
    transform: scale(1.3);
}

@keyframes navDotPulse {

    0%,
    100% {
        box-shadow: 0 0 10px currentColor, 0 0 20px currentColor;
    }

    50% {
        box-shadow: 0 0 15px currentColor, 0 0 30px currentColor, 0 0 40px currentColor;
    }
}

/* rainbow trail - different colors for each section */
.nav-dot[data-section="home"].active {
    background: #06b6d4;
    border-color: #06b6d4;
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.6);
}

.nav-dot[data-section="about"].active {
    background: #8b5cf6;
    border-color: #8b5cf6;
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.6);
}

.nav-dot[data-section="experience"].active {
    background: #f59e0b;
    border-color: #f59e0b;
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.6);
}

.nav-dot[data-section="arsenal"].active {
    background: #10b981;
    border-color: #10b981;
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.6);
}

.nav-dot[data-section="education"].active {
    background: #ec4899;
    border-color: #ec4899;
    box-shadow: 0 0 20px rgba(236, 72, 153, 0.6);
}

.nav-dot[data-section="contact"].active {
    background: #ef4444;
    border-color: #ef4444;
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.6);
}

/* smooth color transition */
.nav-dot {
    transition: all 0.5s ease;
}

.nav-tooltip {
    position: absolute;
    right: calc(100% + var(--spacing-md));
    top: 50%;
    transform: translateY(-50%);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 8px;
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.nav-dot:hover .nav-tooltip {
    opacity: 1;
}

/* social sidebar */

.social-sidebar {
    position: fixed;
    left: var(--spacing-lg);
    bottom: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-light);
    transition: all var(--transition-base);
    position: relative;
    font-size: 1.25rem;
}

.social-link::before {
    content: attr(data-tooltip);
    position: absolute;
    left: calc(100% + var(--spacing-md));
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 8px;
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.social-link:hover::before {
    opacity: 1;
}

.social-link:hover {
    color: var(--color-primary);
    transform: translateY(-3px);
}

/* GitHub Personal - stays cyan (default) */

/* GitHub Year Up - orange */
.social-yearup:hover {
    color: #f97316;
}

/* LinkedIn - blue */
.social-link[href*="linkedin"]:hover {
    color: #0077b5;
}

/* Linktree - green */
.social-linktree:hover {
    color: #43e660;
}

.social-line {
    width: 2px;
    height: 100px;
    background: var(--color-gray);
}

/* container & sections */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.section {
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.section::after {
    content: '';
    display: block;
    width: 60%;
    max-width: 400px;
    height: 1px;
    margin: var(--spacing-2xl) auto 0;
    background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.4), rgba(139, 92, 246, 0.4), transparent);
    animation: dividerShimmer 3s ease-in-out infinite;
}

@keyframes dividerShimmer {

    0%,
    100% {
        opacity: 0.5;
    }

    50% {
        opacity: 1;
    }
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.section-number {
    font-size: 1.25rem;
    color: var(--color-primary);
    font-family: var(--font-code);
    font-weight: 600;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--color-white);
    white-space: nowrap;
}

/* section title hover animations */

/* 1. About Me - Float & Glow */
.hover-float {
    display: inline-block;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    cursor: pointer;
}

.hover-float:hover {
    transform: translateY(-10px) scale(1.05);
    color: var(--color-primary);
    filter: drop-shadow(0 0 15px rgba(6, 182, 212, 0.8));
}

/* 2. Work Experience - Shake */
.hover-glitch {
    display: inline-block;
    cursor: pointer;
    position: relative;
}

.hover-glitch:hover {
    animation: shake 0.5s ease-in-out !important;
    color: var(--color-secondary) !important;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0) !important;
    }

    10%,
    30%,
    50%,
    70%,
    90% {
        transform: translateX(-10px) !important;
    }

    20%,
    40%,
    60%,
    80% {
        transform: translateX(10px) !important;
    }
}

/* 3. Skills & Competencies - Pulse & Scale */
.hover-pulse {
    display: inline-block;
    cursor: pointer;
    transition: all 0.3s ease;
}

.hover-pulse:hover {
    animation: pulse-grow 0.6s ease-in-out;
    color: var(--color-accent);
}

@keyframes pulse-grow {

    0%,
    100% {
        transform: scale(1);
        filter: drop-shadow(0 0 0 rgba(245, 158, 11, 0));
    }

    50% {
        transform: scale(1.1);
        filter: drop-shadow(0 0 20px rgba(245, 158, 11, 0.8));
    }
}

/* 4. Education - 3D Rotate */
.hover-rotate {
    display: inline-block;
    cursor: pointer;
    transition: all 0.5s ease;
    transform-style: preserve-3d;
}

.hover-rotate:hover {
    transform: rotateY(360deg) scale(1.05);
    color: var(--color-primary);
    filter: drop-shadow(0 0 15px rgba(6, 182, 212, 0.6));
}

/* 5. Get In Touch - Rainbow Gradient */
.hover-rainbow {
    display: inline-block;
    cursor: pointer;
    background: linear-gradient(90deg,
            var(--color-primary),
            var(--color-secondary),
            var(--color-accent),
            var(--color-primary));
    background-size: 300% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: all 0.5s ease;
}

.hover-rainbow:hover {
    animation: rainbow-slide 1s ease-in-out;
    transform: scale(1.08);
    filter: drop-shadow(0 0 20px rgba(139, 92, 246, 0.8));
}

@keyframes rainbow-slide {
    0% {
        background-position: 0% 50%;
    }

    100% {
        background-position: 100% 50%;
    }
}

.section-line {
    flex: 1;
    height: 1px;
    background: var(--glass-border);
}

/* glass card effect */

.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    box-shadow: var(--glass-shadow);
}

.glass-card:hover {
    border-color: rgba(6, 182, 212, 0.3);
    box-shadow: 0 8px 32px 0 rgba(6, 182, 212, 0.2);
    transform: translateY(-4px);
}

/* ── About Section: Tabbed Profile Card ── */

.profile-card {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

/* Flowing sections inside profile card */
.about-flow-section {
    padding: 1.25rem 1.5rem;
}

.about-flow-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.about-flow-header i {
    font-size: 1rem;
    color: var(--color-primary);
    filter: drop-shadow(0 0 6px rgba(6, 182, 212, 0.5));
    flex-shrink: 0;
}

.about-flow-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #f1f5f9;
    margin: 0;
}

.about-flow-section p {
    font-size: 0.95rem;
    color: var(--color-gray-light);
    line-height: 1.8;
    margin: 0;
}

.about-flow-section strong {
    color: var(--color-primary);
}

.about-flow-divider {
    height: 1px;
    margin: 0 1.5rem;
    background: linear-gradient(to right, transparent, rgba(6, 182, 212, 0.15), transparent);
}

[data-theme="light"] .about-flow-header h3 {
    color: #0f172a;
}

/* CTA button inside profile card */
.about-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1.2rem;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50px;
    color: var(--color-white);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-primary);
    margin-top: var(--spacing-sm);
}

.about-cta-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
}

/* Mobile: tighter padding for flowing sections */
@media (max-width: 640px) {
    .about-flow-section {
        padding: 1rem;
    }

    .about-flow-divider {
        margin: 0 1rem;
    }
}

.about-section {
    position: relative;
    overflow: hidden;
}

.about-background-image {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 500px;
    height: 500px;
    opacity: 0.08;
    pointer-events: none;
    z-index: 0;
}

.about-background-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(30%);
}

.about-section .section-header,
.about-section .about-grid {
    position: relative;
    z-index: 1;
}

.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.about-content p {
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-light);
    line-height: 1.8;
}

.about-intro {
    font-size: 1.125rem;
    font-weight: 500;
}

.tech-stack {
    margin-top: var(--spacing-xl);
}

.tech-stack h3 {
    font-size: 1.125rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--spacing-sm);
}

.tech-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs);
    background: rgba(6, 182, 212, 0.1);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--color-primary);
    transition: all var(--transition-base);
}

.tech-item:hover {
    background: rgba(6, 182, 212, 0.2);
    transform: scale(1.05);
}

.about-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.about-links .feature-card {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-lg);
    min-height: auto;
    padding: var(--spacing-lg) var(--spacing-xl) !important;
}

.about-links .feature-card .feature-icon {
    margin-bottom: 0;
    flex-shrink: 0;
}

.about-links .feature-card .feature-content {
    flex: 1;
}

.about-links .feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.about-links .feature-card p {
    font-size: 0.9rem;
}

.about-links .feature-card .feature-arrow {
    position: static;
    flex-shrink: 0;
}

.feature-card {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    padding: var(--spacing-xl) !important;
    min-height: 180px;
}

.feature-card .feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-base);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
}

.feature-card p {
    font-size: 1rem;
    color: var(--color-gray-light);
    margin-bottom: 0;
    line-height: 1.5;
}

.feature-arrow {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    color: var(--color-primary);
    font-size: 1.25rem;
    transition: transform var(--transition-base);
}

.feature-card:hover .feature-arrow {
    transform: translateX(5px);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

/* Enhanced transparent glass effect for feature cards */
.feature-card.glass-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow:
        0 8px 32px 0 rgba(0, 0, 0, 0.2),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.05);
}

.feature-card.glass-card:hover {
    background: rgba(6, 182, 212, 0.05);
    border-color: rgba(6, 182, 212, 0.4);
    box-shadow:
        0 12px 40px 0 rgba(6, 182, 212, 0.2),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.1),
        0 0 30px rgba(6, 182, 212, 0.15);
    transform: translateY(-8px);
}

.feature-card.glass-card .feature-icon {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.8) 0%, rgba(139, 92, 246, 0.8) 100%);
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
}

.feature-card.glass-card:hover .feature-icon {
    background: linear-gradient(135deg, rgba(6, 182, 212, 1) 0%, rgba(139, 92, 246, 1) 100%);
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.5);
}

/* Feature Card Hover Animations */

/* Development Showcase - Code Rain Effect */
.hover-code-rain {
    position: relative;
}

.hover-code-rain::before {
    content: '</>';
    position: absolute;
    top: 10px;
    right: 60px;
    font-family: var(--font-code);
    font-size: 0.75rem;
    color: var(--color-primary);
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.4s ease;
}

.hover-code-rain::after {
    content: '{ }';
    position: absolute;
    top: 30px;
    right: 80px;
    font-family: var(--font-code);
    font-size: 0.65rem;
    color: var(--color-secondary);
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.5s ease 0.1s;
}

.hover-code-rain:hover::before {
    opacity: 0.7;
    transform: translateY(0);
    animation: codeFloat 2s ease-in-out infinite;
}

.hover-code-rain:hover::after {
    opacity: 0.5;
    transform: translateY(0);
    animation: codeFloat 2.5s ease-in-out infinite 0.3s;
}

@keyframes codeFloat {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(5px);
    }
}

.hover-code-rain:hover .feature-icon i {
    animation: typeCode 0.5s ease infinite;
}

@keyframes typeCode {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* Certifications - Shine/Shimmer Effect */
.hover-shine {
    position: relative;
    overflow: hidden;
}

.hover-shine::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.15),
            transparent);
    transform: skewX(-25deg);
    transition: none;
}

.hover-shine:hover::before {
    animation: shine 0.8s ease;
}

@keyframes shine {
    0% {
        left: -100%;
    }

    100% {
        left: 150%;
    }
}

.hover-shine:hover .feature-icon {
    animation: certificatePulse 0.6s ease;
}

@keyframes certificatePulse {

    0%,
    100% {
        transform: scale(1.1) rotate(5deg);
    }

    50% {
        transform: scale(1.2) rotate(-5deg);
    }
}

/* Games - Glitch Effect */
.hover-glitch-btn {
    position: relative;
}

.hover-glitch-btn:hover .feature-icon {
    animation: glitchIcon 0.4s ease infinite;
}

@keyframes glitchIcon {

    0%,
    100% {
        transform: scale(1.1) rotate(5deg) translate(0);
    }

    25% {
        transform: scale(1.1) rotate(5deg) translate(-2px, 1px);
    }

    50% {
        transform: scale(1.1) rotate(5deg) translate(2px, -1px);
    }

    75% {
        transform: scale(1.1) rotate(5deg) translate(-1px, -1px);
    }
}

.hover-glitch-btn:hover h3 {
    animation: textGlitch 0.3s ease infinite;
}

@keyframes textGlitch {

    0%,
    100% {
        text-shadow: none;
    }

    25% {
        text-shadow: -2px 0 var(--color-primary), 2px 0 var(--color-secondary);
    }

    50% {
        text-shadow: 2px 0 var(--color-primary), -2px 0 var(--color-secondary);
    }

    75% {
        text-shadow: -1px 0 var(--color-accent), 1px 0 var(--color-primary);
    }
}

.hover-glitch-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(transparent 0%,
            rgba(6, 182, 212, 0.03) 50%,
            transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.hover-glitch-btn:hover::before {
    opacity: 1;
    animation: scanLine 1.5s linear infinite;
}

@keyframes scanLine {
    0% {
        transform: translateY(-100%);
    }

    100% {
        transform: translateY(100%);
    }
}

/* ── Horizontal Timeline (merged experience + journey) ── */

.exp-stats-bar {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.exp-stat-pill {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1.2rem !important;
    border-radius: 50px;
    min-width: auto;
}

.exp-stat-num {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-code);
}

.exp-stat-label {
    font-size: 0.8rem;
    color: var(--color-gray-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Timeline Filters */
.h-timeline-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.h-filter-group {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    justify-content: center;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 999px;
    padding: 0.3rem;
}

.h-filter-btn {
    padding: 0.35rem 0.85rem;
    border: none;
    border-radius: 999px;
    background: transparent;
    color: var(--color-gray-light);
    font-family: var(--font-code);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.h-filter-btn:hover {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.08);
}

.h-filter-btn.active {
    background: var(--color-primary);
    color: var(--color-dark);
    font-weight: 600;
}

.h-filter-type .h-filter-btn.active {
    background: var(--color-secondary);
}

/* Hidden entry during filtering */
.split-entry.filtered-out {
    display: none;
}

/* Expand All button (used by About & Education) */
.h-expand-all-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 1rem;
    border: 1px solid rgba(6, 182, 212, 0.3);
    border-radius: 999px;
    background: rgba(6, 182, 212, 0.08);
    color: var(--color-primary);
    font-family: var(--font-code);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.h-expand-all-btn:hover {
    background: rgba(6, 182, 212, 0.15);
    border-color: var(--color-primary);
}

.h-expand-all-btn.active {
    background: var(--color-primary);
    color: var(--color-dark);
}

/* ── Split Panel Layout ── */
.split-panel-list {
    display: flex;
    flex-direction: column;
    max-width: 900px;
    margin: 0 auto;
}

/* Each entry row */
.split-entry {
    display: flex;
    align-items: stretch;
    padding: 1.5rem 0;
    transition: opacity 0.3s ease;
}

.split-entry:first-child {
    padding-top: 0;
}

/* Left column — year, company, badge */
.split-left {
    flex: 0 0 200px;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    padding-right: 1.5rem;
    text-align: right;
}

.split-year {
    font-family: var(--font-code);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 0.4rem;
}

.split-company {
    font-size: 0.85rem;
    color: var(--color-gray-light);
    font-weight: 500;
    line-height: 1.3;
    margin-bottom: 0.5rem;
}

.split-left .h-card-badge {
    margin-top: 0.3rem;
}

/* Center divider line with dot */
.split-divider {
    flex: 0 0 20px;
    position: relative;
}

.split-divider::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    transform: translateX(-50%);
    background: rgba(6, 182, 212, 0.15);
}

.split-dot {
    position: absolute;
    top: 0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-primary);
    box-shadow: 0 0 8px rgba(6, 182, 212, 0.5);
    z-index: 1;
}

.split-dot.milestone-dot {
    background: #f59e0b;
    box-shadow: 0 0 8px rgba(245, 158, 11, 0.5);
    width: 12px;
    height: 12px;
}

/* Right column — role, date, details */
.split-right {
    flex: 1;
    padding-left: 1.5rem;
    min-width: 0;
}

.split-right h3 {
    font-size: 1.05rem;
    color: var(--color-white);
    margin-bottom: 0.2rem;
    line-height: 1.3;
}

.split-date {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--color-gray);
    font-family: var(--font-code);
    margin-bottom: 0.6rem;
}

/* Badges */
.h-card-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.milestone-badge {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.current-badge {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Details list — always visible */
.split-details {
    list-style: none;
    padding: 0;
    margin: 0;
}

.split-details li {
    position: relative;
    padding-left: 1rem;
    font-size: 0.82rem;
    color: var(--color-gray-light);
    line-height: 1.6;
    margin-bottom: 0.4rem;
}

.split-details li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

/* Milestone entries — special styling */
.split-milestone-content {
    padding-left: 1.5rem;
}

.split-entry.milestone .split-divider::before {
    background: rgba(245, 158, 11, 0.3);
}

.split-milestone-content .h-card-badge {
    margin-bottom: 0.4rem;
}

.split-milestone-content p {
    font-size: 0.85rem;
    color: var(--color-gray-light);
    line-height: 1.5;
    margin: 0;
}

/* Hover effect on entries */
.split-entry:hover .split-right h3 {
    color: var(--color-primary);
    transition: color var(--transition-base);
}

.split-entry:hover .split-dot {
    box-shadow: 0 0 14px rgba(6, 182, 212, 0.8);
    transition: box-shadow var(--transition-base);
}

.split-entry.milestone:hover .split-dot.milestone-dot {
    box-shadow: 0 0 14px rgba(245, 158, 11, 0.8);
}

/* Mobile responsive */
@media (max-width: 768px) {
    .h-timeline-filters {
        gap: 0.5rem;
    }

    .h-filter-group {
        gap: 0.25rem;
        padding: 0.2rem;
    }

    .h-filter-btn {
        padding: 0.25rem 0.6rem;
        font-size: 0.65rem;
    }

    .split-left {
        flex: 0 0 80px;
        padding-right: 0.8rem;
    }

    .split-year {
        font-size: 1.1rem;
    }

    .split-company {
        font-size: 0.7rem;
    }

    .split-right {
        padding-left: 0.8rem;
    }

    .split-right h3 {
        font-size: 0.9rem;
    }

    .split-details li {
        font-size: 0.75rem;
    }

    .exp-stats-bar {
        gap: 0.5rem;
    }

    .exp-stat-pill {
        padding: 0.4rem 0.8rem !important;
    }

    .exp-stat-num {
        font-size: 1.1rem;
    }
}

/* experience controls (legacy, kept for compatibility) */

.experience-controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    justify-content: center;
    width: 100%;
}

.year-filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    width: 100%;
}

.year-filter-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--color-gray-light);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    min-width: 80px;
}

.year-filter-btn:hover {
    background: rgba(6, 182, 212, 0.1);
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.year-filter-btn.active {
    background: var(--gradient-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-glow);
}

.year-filter-btn.active:hover {
    transform: translateY(-2px) scale(1.05);
}

/* Mobile dropdown */

.year-filter-dropdown {
    display: none;
    flex-direction: column;
    gap: var(--spacing-xs);
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
}

.filter-label {
    font-size: 0.875rem;
    color: var(--color-gray-light);
    font-weight: 500;
    text-align: center;
}

.year-select {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--color-white);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-primary);
    outline: none;
    text-align: center;
    text-align-last: center;
}

.year-select:hover {
    background: rgba(6, 182, 212, 0.1);
    border-color: var(--color-primary);
}

.year-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

.year-select option {
    background: var(--color-dark-alt);
    color: var(--color-white);
    padding: var(--spacing-sm);
}

/* timeline (experience) */

.timeline {
    position: relative;
    padding-left: var(--spacing-xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
    opacity: 1;
    transform: scale(1);
    transition: all 0.3s ease;
}

.timeline-item.hidden {
    opacity: 0;
    transform: scale(0.95);
    height: 0;
    margin: 0;
    overflow: hidden;
    pointer-events: none;
}

.timeline-marker {
    position: absolute;
    left: calc(-1 * var(--spacing-xl) - 9px);
    top: 8px;
    width: 20px;
    height: 20px;
    background: var(--color-dark);
    border: 3px solid var(--color-primary);
    border-radius: 50%;
    transition: all var(--transition-base);
    z-index: 2;
}

.timeline-marker.current {
    background: var(--color-accent);
    border-color: var(--color-accent);
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.5);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(245, 158, 11, 0.5);
    }

    50% {
        box-shadow: 0 0 30px rgba(245, 158, 11, 0.8);
    }
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--spacing-xl) + 11px);
    top: 17px;
    width: calc(var(--spacing-xl) - 11px);
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), transparent);
    opacity: 0.3;
    transition: opacity 0.4s ease;
}

.timeline-item:hover::before {
    opacity: 1;
    background: linear-gradient(90deg, var(--color-primary), rgba(139, 92, 246, 0.5));
}

.timeline-item:hover .timeline-marker {
    transform: scale(1.3);
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.6);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.timeline-header h3 {
    font-size: 1.5rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
}

.timeline-header h4 {
    font-size: 1.125rem;
    color: var(--color-primary);
    font-weight: 600;
}

.timeline-date {
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.3);
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--color-primary);
    font-family: var(--font-code);
    white-space: nowrap;
}

.current-badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--gradient-accent);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-white);
    margin-left: var(--spacing-sm);
}

.timeline-list {
    list-style: none;
    padding: 0;
}

.timeline-list li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-light);
    line-height: 1.7;
}

.timeline-list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-size: 1.25rem;
}

/* skills section — old accordion removed, using mobile tabs now */

/* ── Tag Cloud (desktop) & Arsenal Legend ── */

.arsenal-legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.legend-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 0.4rem 1.1rem;
    font-size: 0.85rem;
    color: var(--color-gray-light);
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-primary);
}

.legend-item:hover {
    border-color: var(--cat-color, var(--color-primary));
    color: var(--cat-color, var(--color-primary));
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

.legend-item.active {
    background: var(--cat-color, var(--color-primary));
    border-color: var(--cat-color, var(--color-primary));
    color: var(--color-dark);
    font-weight: 600;
    box-shadow: 0 0 16px rgba(6, 182, 212, 0.25);
}

/* Tag Cloud Container */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    padding: var(--spacing-lg) 0;
    max-width: 1000px;
    margin: 0 auto;
}

/* Individual Cloud Tag */
.cloud-tag {
    display: inline-block;
    padding: 0.45rem 1rem;
    border-radius: 20px;
    border: 1px solid var(--tag-color, var(--color-primary));
    color: var(--tag-color, var(--color-primary));
    background: rgba(0, 0, 0, 0.15);
    cursor: default;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    animation: tagFloat 6s ease-in-out infinite;
    animation-delay: var(--float-delay, 0s);
    white-space: nowrap;
}

.cloud-tag.size-sm {
    font-size: 0.78rem;
    padding: 0.35rem 0.8rem;
}

.cloud-tag.size-md {
    font-size: 0.92rem;
    padding: 0.45rem 1rem;
    font-weight: 500;
}

.cloud-tag.size-lg {
    font-size: 1.12rem;
    padding: 0.55rem 1.25rem;
    font-weight: 600;
    border-width: 1.5px;
}

/* ── Category-Specific Tag Styles ── */

/* 💼 Business — Clean pills, bottom border accent, solid fill, smooth lift hover */
.cloud-tag[data-category="business"] {
    border-radius: 20px;
    border: none;
    border-bottom: 2px solid var(--tag-color);
    background: rgba(6, 182, 212, 0.08);
}

.cloud-tag[data-category="business"]:hover {
    transform: translateY(-6px) scale(1.08);
    background: rgba(6, 182, 212, 0.18);
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.2);
    border-bottom-color: #fff;
    color: #fff;
    z-index: 10;
}

/* 📊 Data — Sharp rectangles, left border accent, diagonal stripe bg, pulse hover */
.cloud-tag[data-category="data"] {
    border-radius: 4px;
    border: none;
    border-left: 3px solid var(--tag-color);
    background: repeating-linear-gradient(-45deg,
            rgba(139, 92, 246, 0.04),
            rgba(139, 92, 246, 0.04) 4px,
            rgba(139, 92, 246, 0.1) 4px,
            rgba(139, 92, 246, 0.1) 8px);
    font-family: var(--font-code);
}

.cloud-tag[data-category="data"]:hover {
    animation: dataPulse 0.6s ease-in-out;
    background: rgba(139, 92, 246, 0.2);
    box-shadow: 0 0 16px rgba(139, 92, 246, 0.35);
    border-left-color: #fff;
    color: #fff;
    z-index: 10;
}

@keyframes dataPulse {

    0%,
    100% {
        transform: scale(1);
    }

    25% {
        transform: scale(1.12);
    }

    50% {
        transform: scale(1.05);
    }

    75% {
        transform: scale(1.1);
    }
}

/* 💻 Tech — Angled/clipped corners, full glow border, dark terminal bg, glitch hover */
.cloud-tag[data-category="tech"] {
    border-radius: 2px;
    border: 1px solid var(--tag-color);
    background: rgba(0, 15, 10, 0.5);
    font-family: var(--font-code);
    clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
    padding-left: 1.2rem;
    padding-right: 1.2rem;
}

.cloud-tag[data-category="tech"]:hover {
    animation: techGlitch 0.4s steps(2) forwards;
    background: rgba(16, 185, 129, 0.2);
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.4), 0 0 30px rgba(16, 185, 129, 0.15);
    color: #fff;
    z-index: 10;
}

@keyframes techGlitch {
    0% {
        transform: translate(0);
    }

    20% {
        transform: translate(-2px, 1px);
    }

    40% {
        transform: translate(2px, -1px);
    }

    60% {
        transform: translate(-1px, -1px);
    }

    80% {
        transform: translate(1px, 1px);
    }

    100% {
        transform: translate(0) scale(1.08);
    }
}

/* 🛠️ Tools — Dashed double border, metallic shimmer bg, shake hover */
.cloud-tag[data-category="tools"] {
    border-radius: 8px;
    border: 2px dashed var(--tag-color);
    background: linear-gradient(135deg,
            rgba(245, 158, 11, 0.05) 0%,
            rgba(245, 158, 11, 0.12) 50%,
            rgba(245, 158, 11, 0.05) 100%);
    background-size: 200% 200%;
}

.cloud-tag[data-category="tools"]:hover {
    animation: toolShake 0.5s ease-in-out, toolShimmer 1.5s ease infinite;
    border-style: solid;
    background-size: 200% 200%;
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.25);
    color: #fff;
    z-index: 10;
}

@keyframes toolShake {

    0%,
    100% {
        transform: rotate(0deg);
    }

    15% {
        transform: rotate(-3deg);
    }

    30% {
        transform: rotate(3deg);
    }

    45% {
        transform: rotate(-2deg);
    }

    60% {
        transform: rotate(2deg);
    }

    75% {
        transform: rotate(-1deg);
    }

    90% {
        transform: rotate(1deg);
    }
}

@keyframes toolShimmer {
    0% {
        background-position: 200% 50%;
    }

    100% {
        background-position: -200% 50%;
    }
}

/* 🤝 Strategic — No border, radial glow bg, soft shadow, bloom hover */
.cloud-tag[data-category="strategic"] {
    border-radius: 30px;
    border: none;
    background: radial-gradient(ellipse at center,
            rgba(236, 72, 153, 0.15) 0%,
            rgba(236, 72, 153, 0.03) 70%,
            transparent 100%);
    box-shadow: 0 2px 12px rgba(236, 72, 153, 0.1);
    letter-spacing: 0.03em;
}

.cloud-tag[data-category="strategic"]:hover {
    animation: strategicBloom 0.6s ease forwards;
    background: radial-gradient(ellipse at center,
            rgba(236, 72, 153, 0.3) 0%,
            rgba(236, 72, 153, 0.1) 70%,
            transparent 100%);
    box-shadow: 0 0 20px rgba(236, 72, 153, 0.35), 0 0 40px rgba(236, 72, 153, 0.15);
    color: #fff;
    z-index: 10;
}

@keyframes strategicBloom {
    0% {
        transform: scale(1);
        filter: brightness(1);
    }

    50% {
        transform: scale(1.15);
        filter: brightness(1.3);
    }

    100% {
        transform: scale(1.1);
        filter: brightness(1.15);
    }
}

/* Default hover fallback (for 'all' filter or unmatched) */
.cloud-tag:hover {
    transform: translateY(-5px) scale(1.12);
    background: rgba(0, 0, 0, 0.3);
    box-shadow:
        0 0 12px var(--tag-color),
        0 0 30px rgba(0, 0, 0, 0.2),
        inset 0 0 8px rgba(255, 255, 255, 0.05);
    border-color: var(--tag-color);
    color: #fff;
    z-index: 10;
}

/* Filtered out state — fade & shrink before JS hides */
.cloud-tag.filtering-out {
    opacity: 0;
    transform: scale(0.4);
    pointer-events: none;
}

/* Fully hidden after transition */
.cloud-tag.filtered-out {
    display: none !important;
}

/* Visible tags re-entering with pop */
.cloud-tag.filtering-in {
    animation: tagPopIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes tagPopIn {
    0% {
        opacity: 0;
        transform: scale(0.5) translateY(12px);
    }

    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Staggered entrance animation */
.cloud-tag.tag-enter {
    animation: tagEnter 0.5s ease forwards;
    animation-delay: var(--enter-delay, 0s);
    opacity: 0;
    transform: translateY(15px) scale(0.85);
}

@keyframes tagEnter {
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Subtle idle float */
@keyframes tagFloat {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-4px);
    }
}

/* Vary float speed via nth-child for organic feel */
.cloud-tag:nth-child(5n) {
    animation-duration: 7s;
}

.cloud-tag:nth-child(7n) {
    animation-duration: 5s;
}

.cloud-tag:nth-child(11n) {
    animation-duration: 8s;
}

/* Desktop: show tag cloud, hide mobile tabs */
@media (min-width: 769px) {
    .tag-cloud {
        display: flex;
    }

    .mobile-arsenal {
        display: none;
    }
}

/* Mobile: show tabs, hide tag cloud & legend */
@media (max-width: 768px) {

    .tag-cloud,
    .arsenal-legend {
        display: none;
    }

    .mobile-arsenal {
        display: block;
    }
}

/* ── Mobile Arsenal Tabs ── */
.mobile-arsenal-tabs {
    display: flex;
    overflow-x: auto;
    gap: 0.4rem;
    padding: 0.3rem;
    margin-bottom: var(--spacing-md);
    background: rgba(255, 255, 255, 0.03);
    border-radius: 14px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.mobile-arsenal-tabs::-webkit-scrollbar {
    display: none;
}

.mobile-tab {
    flex: 0 0 auto;
    padding: 0.5rem 0.9rem;
    border: 1px solid transparent;
    border-radius: 10px;
    background: transparent;
    color: var(--color-gray);
    font-size: 0.78rem;
    font-family: var(--font-code);
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.mobile-tab.active {
    background: var(--tab-color);
    color: var(--color-dark);
    font-weight: 600;
    box-shadow: 0 0 12px rgba(0, 0, 0, 0.2);
}

.mobile-tab:not(.active):hover {
    border-color: var(--tab-color);
    color: var(--tab-color);
}

/* Tab Panels */
.mobile-tab-panels {
    position: relative;
    min-height: 120px;
}

.mobile-tab-panel {
    display: none;
    animation: tabFadeIn 0.3s ease forwards;
}

.mobile-tab-panel.active {
    display: block;
}

@keyframes tabFadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: var(--spacing-sm);
}

/* Base mobile tag */
.m-tag {
    display: inline-block;
    padding: 0.4rem 0.85rem;
    font-size: 0.8rem;
    cursor: default;
    transition: all 0.3s ease;
}

/* 💼 Business — Clean pills, bottom border, subtle fill */
.m-tag.m-business {
    border-radius: 20px;
    border: none;
    border-bottom: 2px solid #06b6d4;
    background: rgba(6, 182, 212, 0.08);
    color: #06b6d4;
}

/* 📊 Data — Sharp rectangles, left border, stripe pattern, monospace */
.m-tag.m-data {
    border-radius: 4px;
    border: none;
    border-left: 3px solid #8b5cf6;
    background: repeating-linear-gradient(-45deg,
            rgba(139, 92, 246, 0.04),
            rgba(139, 92, 246, 0.04) 4px,
            rgba(139, 92, 246, 0.1) 4px,
            rgba(139, 92, 246, 0.1) 8px);
    color: #8b5cf6;
    font-family: var(--font-code);
}

/* 💻 Tech — Angled/clipped corners, dark terminal bg, monospace */
.m-tag.m-tech {
    border-radius: 2px;
    border: 1px solid #10b981;
    background: rgba(0, 15, 10, 0.5);
    color: #10b981;
    font-family: var(--font-code);
    clip-path: polygon(6px 0%, 100% 0%, calc(100% - 6px) 100%, 0% 100%);
    padding-left: 1rem;
    padding-right: 1rem;
}

/* 🛠️ Tools — Dashed border, metallic shimmer */
.m-tag.m-tools {
    border-radius: 8px;
    border: 2px dashed #f59e0b;
    background: linear-gradient(135deg,
            rgba(245, 158, 11, 0.05) 0%,
            rgba(245, 158, 11, 0.12) 50%,
            rgba(245, 158, 11, 0.05) 100%);
    color: #f59e0b;
}

/* 🤝 Strategic — No border, radial glow, extra letter-spacing */
.m-tag.m-strategic {
    border-radius: 30px;
    border: none;
    background: radial-gradient(ellipse at center,
            rgba(236, 72, 153, 0.15) 0%,
            rgba(236, 72, 153, 0.03) 70%,
            transparent 100%);
    color: #ec4899;
    box-shadow: 0 2px 10px rgba(236, 72, 153, 0.1);
    letter-spacing: 0.03em;
}

/* ── Featured Projects Section ── */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.project-card {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    padding: var(--spacing-md) !important;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: rgba(6, 182, 212, 0.4);
    box-shadow:
        0 12px 40px rgba(6, 182, 212, 0.15),
        0 0 30px rgba(6, 182, 212, 0.1);
}

.project-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-base);
}

.project-card:hover .project-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
}

.project-content h3 {
    font-size: 1rem;
    color: var(--color-white);
    margin-bottom: 0.3rem;
}

.project-content p {
    font-size: 0.8rem;
    color: var(--color-gray-light);
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.8rem;
    color: var(--color-primary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: auto;
    transition: all var(--transition-base);
}

.project-card:hover .project-link {
    gap: var(--spacing-sm);
}

.project-card:hover .project-link i {
    transform: translateX(4px);
}

.project-link i {
    transition: transform var(--transition-base);
}

/* Collapsible extra projects */
.projects-extra {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transition: max-height 0.5s ease, opacity 0.4s ease, margin-top 0.4s ease;
    margin-top: 0;
}

.projects-extra.open {
    max-height: 1200px;
    opacity: 1;
    margin-top: var(--spacing-md);
}

.projects-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: none;
    border: 1px solid rgba(6, 182, 212, 0.3);
    border-radius: 50px;
    color: var(--color-primary);
    font-size: 1rem;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    margin-bottom: var(--spacing-sm);
}

.projects-toggle-btn:hover {
    background: rgba(6, 182, 212, 0.1);
    border-color: var(--color-primary);
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.15);
    transform: translateY(-2px);
}

.projects-toggle-btn i {
    transition: transform 0.35s ease;
}

.projects-toggle-btn.open i {
    transform: rotate(180deg);
}

.view-all-projects {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-md);
}

.view-all-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid rgba(6, 182, 212, 0.3);
    border-radius: 50px;
    transition: all var(--transition-base);
}

.view-all-link:hover {
    background: rgba(6, 182, 212, 0.1);
    border-color: var(--color-primary);
    gap: var(--spacing-sm);
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.15);
}

@media (max-width: 968px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .projects-extra {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .projects-extra {
        grid-template-columns: 1fr;
    }
}

/* education section */

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

/* ── Unified Education List (split-panel style) ── */

.edu-list {
    display: flex;
    flex-direction: column;
    max-width: 900px;
    margin: 0 auto;
}

.edu-entry {
    display: flex;
    align-items: stretch;
    padding: 1.5rem 0;
}

.edu-entry:first-child {
    padding-top: 0;
}

/* Left column — icon, year, status */
.edu-entry-left {
    flex: 0 0 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding-right: 1rem;
    gap: 0.4rem;
}

.edu-entry-icon {
    font-size: 2rem;
    line-height: 1;
}

.edu-entry-year {
    font-family: var(--font-code);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-primary);
}

.edu-entry-status {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.2rem 0.6rem;
    border-radius: 10px;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    white-space: nowrap;
}

.edu-entry-status.completed {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.edu-entry-status.in-progress {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

/* Center line with dot */
.edu-entry-line {
    flex: 0 0 20px;
    position: relative;
}

.edu-entry-line::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    transform: translateX(-50%);
    background: rgba(6, 182, 212, 0.15);
}

.edu-entry-dot {
    position: absolute;
    top: 0.8rem;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-primary);
    box-shadow: 0 0 8px rgba(6, 182, 212, 0.5);
    z-index: 1;
}

.edu-entry-dot.current-dot {
    background: #f59e0b;
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.5);
    width: 14px;
    height: 14px;
}

.edu-entry-dot.small-dot {
    width: 8px;
    height: 8px;
    opacity: 0.7;
}

/* Right column — details */
.edu-entry-right {
    flex: 1;
    padding-left: 1.5rem;
    min-width: 0;
}

.edu-entry-right h3 {
    font-size: 1.1rem;
    color: var(--color-white);
    margin-bottom: 0.15rem;
    line-height: 1.3;
}

.edu-entry-right h4 {
    font-size: 0.9rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 0.3rem;
}

.edu-entry-date {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--color-gray);
    font-family: var(--font-code);
    margin-bottom: 0.5rem;
}

.edu-entry-right p {
    font-size: 0.85rem;
    color: var(--color-gray-light);
    line-height: 1.7;
    margin: 0;
}

/* Progress bars for primary entries */
.edu-entry-progress {
    margin-top: 0.75rem;
    height: 4px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 2px;
    overflow: hidden;
}

.edu-entry-progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: width 1.5s ease;
}

/* Secondary entries — slightly lighter feel */
.edu-entry-secondary .edu-entry-right h3 {
    font-size: 0.95rem;
}

.edu-entry-secondary .edu-entry-right p {
    font-size: 0.82rem;
}

/* Hover effect */
.edu-entry:hover .edu-entry-right h3 {
    color: var(--color-primary);
    transition: color var(--transition-base);
}

.edu-entry:hover .edu-entry-dot {
    box-shadow: 0 0 14px rgba(6, 182, 212, 0.8);
    transition: box-shadow var(--transition-base);
}

/* Mobile */
@media (max-width: 768px) {
    .edu-entry-left {
        flex: 0 0 70px;
        padding-right: 0.5rem;
    }

    .edu-entry-icon {
        font-size: 1.5rem;
    }

    .edu-entry-year {
        font-size: 1rem;
    }

    .edu-entry-right {
        padding-left: 0.8rem;
    }

    .edu-entry-right h3 {
        font-size: 0.95rem;
    }
}

/* contact section */

.contact-container {
    max-width: 700px;
    margin: 0 auto;
}

.contact-intro {
    font-size: 1.125rem;
    color: var(--color-gray-light);
    margin-bottom: var(--spacing-xl);
    text-align: center;
    line-height: 1.7;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: 12px;
    color: var(--color-light);
    text-decoration: none;
    transition: all var(--transition-base);
    font-size: 1.125rem;
}

.contact-btn i {
    font-size: 1.5rem;
    color: var(--color-primary);
}

.contact-btn:hover {
    border-color: var(--color-primary);
    background: rgba(6, 182, 212, 0.1);
    transform: translateX(10px) translateY(-2px);
    box-shadow: 0 8px 25px rgba(6, 182, 212, 0.2), 0 0 15px rgba(6, 182, 212, 0.1);
}

.contact-btn:hover i {
    animation: contactIconPulse 0.6s ease;
}

@keyframes contactIconPulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.2);
    }
}

.resume-note {
    text-align: center;
    color: var(--color-gray-light);
    font-size: 0.9rem;
    font-style: italic;
    margin-top: var(--spacing-md);
}

/* footer */

.footer {
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    border-top: 1px solid var(--glass-border);
}

.footer-content p {
    color: var(--color-gray);
    margin-bottom: var(--spacing-xs);
}

.footer-tech {
    font-family: var(--font-code);
    font-size: 0.875rem;
}

/* back to top button */

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    color: var(--color-primary);
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    box-shadow: var(--glass-shadow);
    z-index: 999;
    display: none;
    align-items: center;
    justify-content: center;
}

.back-to-top:hover {
    background: rgba(6, 182, 212, 0.15);
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.back-to-top:active {
    transform: translateY(-2px);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Show back to top button only on mobile */
@media (max-width: 768px) {
    .back-to-top {
        display: flex;
        left: 20px;
        right: auto;
    }
}

/* modal (certifications) */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    z-index: 1;
}

.glass-modal {
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: var(--spacing-xl);
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    color: var(--color-light);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.modal-close:hover {
    background: var(--color-error);
    border-color: var(--color-error);
    transform: rotate(90deg);
}

.folder-view h2 {
    font-size: 2rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.modal-subtitle {
    color: var(--color-gray);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.cert-folders {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.cert-folder-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.cert-folder {
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: 16px;
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    width: 100%;
    height: 100%;
}

.cert-folder::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.2) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.cert-folder:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(6, 182, 212, 0.3);
}

.cert-folder:hover::before {
    width: 300px;
    height: 300px;
}

.cert-folder:active {
    transform: translateY(-3px) scale(0.98);
}

.folder-icon {
    font-size: 4rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    transition: transform 0.4s ease;
    position: relative;
    z-index: 1;
}

.cert-folder:hover .folder-icon {
    transform: scale(1.1) rotateY(10deg);
}

.cert-folder:active .folder-icon {
    animation: folderOpen 0.5s ease;
}

@keyframes folderOpen {
    0% {
        transform: scale(1) rotateY(0deg);
    }

    50% {
        transform: scale(1.15) rotateY(15deg) translateY(-5px);
    }

    100% {
        transform: scale(1) rotateY(0deg);
    }
}

.cert-folder h3 {
    font-size: 1.25rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
    position: relative;
    z-index: 1;
    transition: color 0.3s ease;
}

.cert-folder:hover h3 {
    color: var(--color-primary-light);
}

.cert-folder p {
    color: var(--color-gray);
    font-size: 0.875rem;
    position: relative;
    z-index: 1;
    transition: color 0.3s ease;
}

.cert-folder:hover p {
    color: var(--color-gray-light);
}

.folder-description {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--glass-border);
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--color-gray);
    text-align: left;
    position: relative;
    z-index: 1;
    transition: color 0.3s ease;
}

.cert-folder:hover .folder-description {
    color: var(--color-gray-light);
}

/* Info Button */
.cert-info-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(6, 182, 212, 0.2);
    border: 1px solid var(--color-primary);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
    color: var(--color-primary);
    padding: 0;
    margin: 0;
}

.cert-folder-wrapper:hover .cert-info-btn {
    opacity: 1;
}

.cert-info-btn:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: scale(1.1);
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.6);
}

.cert-info-btn i {
    font-size: 1rem;
}

/* Course Info Modal */
.course-info-modal {
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
}

.course-info-content {
    padding: var(--spacing-xl);
}

.course-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--glass-border);
}

.course-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--color-white);
    box-shadow: 0 10px 30px rgba(6, 182, 212, 0.3);
}

.course-header h2 {
    font-size: 1.75rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.course-subtitle {
    color: var(--color-gray);
    font-size: 1rem;
}

.course-section {
    margin-bottom: var(--spacing-xl);
}

.course-section h3 {
    font-size: 1.25rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.course-section h3 i {
    color: var(--color-primary);
}

.course-section p {
    color: var(--color-gray-light);
    line-height: 1.8;
}

.course-tools {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tool-badge {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: var(--spacing-xs) var(--spacing-md);
    color: var(--color-gray-light);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all 0.3s ease;
}

.tool-badge:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.tool-badge i {
    color: var(--color-primary);
}

.course-skills-list {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-sm);
}

.course-skills-list li {
    color: var(--color-gray-light);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs);
}

.course-skills-list li i {
    color: var(--color-primary);
    font-size: 0.875rem;
}

.course-progress {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.course-module {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.course-module.completed {
    border-color: var(--color-primary);
}

.course-module.completed i {
    color: var(--color-primary);
    font-size: 1rem;
}

.course-module.upcoming i {
    color: var(--color-gray);
    font-size: 0.5rem;
}

.course-module span {
    color: var(--color-gray-light);
    flex: 1;
}

.course-module.completed span {
    color: var(--color-white);
}

/* Expandable Course Module Styles */
.course-module-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.course-module.completed.expandable {
    cursor: pointer;
    position: relative;
}

.course-module.completed.expandable::after {
    content: '\f078';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 0.75rem;
    color: var(--color-primary);
    transition: transform 0.3s ease;
    margin-left: auto;
}

.course-module.completed.expandable.expanded::after {
    transform: rotate(180deg);
}

.course-module.completed.expandable:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: translateX(5px);
}

.course-module-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease, opacity 0.3s ease;
    background: rgba(0, 0, 0, 0.3);
    border-left: 2px solid var(--color-primary);
    margin-left: 1.5rem;
    border-radius: 0 8px 8px 0;
    opacity: 0;
}

.course-module-details.expanded {
    max-height: 500px;
    padding: var(--spacing-md);
    opacity: 1;
    margin-top: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.course-module-details h5 {
    color: var(--color-primary);
    font-size: 0.85rem;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.course-module-details ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.course-module-details li {
    color: var(--color-gray-light);
    font-size: 0.85rem;
    padding: var(--spacing-xs) 0;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    line-height: 1.4;
}

.course-module-details li i {
    color: var(--color-secondary);
    font-size: 0.7rem;
    margin-top: 4px;
    flex-shrink: 0;
}

.progress-bar-container {
    margin-top: var(--spacing-lg);
}

.progress-bar {
    width: 100%;
    height: 30px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    background-size: 200% 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    width: 0;
    animation: progressFillWidth 1.5s ease-out forwards, progressShimmer 2s ease-in-out infinite;
    animation-delay: 0.3s, 1.8s;
}

@keyframes progressFillWidth {
    from {
        width: 0;
    }

    to {
        width: var(--target-width, 50%);
    }
}

@keyframes progressShimmer {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

.progress-text {
    color: var(--color-white);
    font-weight: 600;
    font-size: 0.875rem;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    text-align: center;
}

.course-footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--glass-border);
}

.course-link-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(6, 182, 212, 0.3);
}

.course-link-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(6, 182, 212, 0.5);
}

.learning-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.highlight-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: var(--spacing-md);
    transition: all 0.3s ease;
}

.highlight-item:hover {
    border-color: var(--color-primary);
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(6, 182, 212, 0.2);
}

.highlight-item h4 {
    font-size: 1rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.highlight-item h4 i {
    color: var(--color-primary);
}

.highlight-item p {
    font-size: 0.875rem;
    color: var(--color-gray-light);
    line-height: 1.6;
}

.folder-view {
    transition: opacity 0.3s ease, transform 0.3s ease;
    opacity: 1;
    transform: scale(1);
}

.cert-view {
    animation: fadeIn var(--transition-base);
    transition: opacity 0.3s ease, transform 0.3s ease;
    opacity: 1;
    transform: scale(1);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.back-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--color-light);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-base);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.back-btn:hover {
    border-color: var(--color-primary);
    background: rgba(6, 182, 212, 0.1);
}

.cert-carousel {
    position: relative;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(15, 23, 42, 0.9);
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    color: var(--color-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.prev-btn {
    left: 10px;
}

.next-btn {
    right: 10px;
}

.carousel-btn:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.5);
    transform: translateY(-50%) scale(1.1);
}

.cert-slides {
    position: relative;
}

.cert-slide {
    display: none;
}

.cert-slide.active {
    display: block;
}

.cert-slide h3 {
    font-size: 1.5rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.cert-container {
    background: var(--color-white);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
    min-height: 500px;
}

.cert-pdf {
    width: 100%;
    height: 600px;
    border: none;
}

.pdf-fallback {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    color: var(--color-gray);
    padding: var(--spacing-xl);
}

.pdf-fallback i {
    font-size: 4rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.view-cert-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--gradient-primary);
    color: var(--color-white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all var(--transition-base);
    margin: 0 auto;
}

.view-cert-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.slide-indicator {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.slide-indicator span {
    padding: var(--spacing-xs) var(--spacing-lg);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    font-family: var(--font-code);
    color: var(--color-primary);
}

/* animations */

.fade-in {
    animation: fadeInUp 0.6s ease-out;
}

.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

.delay-1 {
    animation-delay: 0.2s;
    opacity: 0;
    animation-fill-mode: forwards;
}

.delay-2 {
    animation-delay: 0.4s;
    opacity: 0;
    animation-fill-mode: forwards;
}

.delay-3 {
    animation-delay: 0.6s;
    opacity: 0;
    animation-fill-mode: forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* responsive design */

@media (max-width: 1200px) {
    .about-background-image {
        width: 400px;
        height: 400px;
        opacity: 0.06;
    }

    .about-links {
        grid-column: 1 / -1;
    }
}

@media (max-width: 968px) {
    .floating-nav {
        display: none;
    }

    .social-sidebar {
        display: none;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .about-background-image {
        width: 300px;
        height: 300px;
        opacity: 0.05;
        right: 50%;
        transform: translate(50%, -50%);
    }

    .about-links {
        flex-direction: column;
    }

    /* swap mouse for phone on mobile */
    .desktop-only {
        display: none !important;
    }

    .mobile-only {
        display: flex !important;
    }

    .timeline {
        padding-left: var(--spacing-lg);
    }

    .timeline-marker {
        left: calc(-1 * var(--spacing-lg) - 9px);
    }

    .section-header {
        flex-wrap: wrap;
    }

    .section-title {
        white-space: normal;
    }

    .tech-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 0.875rem;
    }

    .prev-btn {
        left: 5px;
    }

    .next-btn {
        right: 5px;
    }

    .cert-pdf {
        display: none;
    }

    .pdf-fallback {
        display: flex;
    }

}

@media (max-width: 640px) {
    .hero {
        padding: var(--spacing-lg);
    }

    .container {
        padding: var(--spacing-lg);
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .education-grid {
        grid-template-columns: 1fr;
    }

    .glass-modal {
        padding: var(--spacing-lg);
    }

    .cert-folders {
        grid-template-columns: 1fr;
    }

    .year-filter-dropdown {
        max-width: 100%;
    }
}

/* games modal */

.games-content h2 {
    font-size: 2rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.game-card {
    text-align: center;
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.game-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-primary);
}

.game-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.game-card h3 {
    font-size: 1.5rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.game-card p {
    color: var(--color-gray-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--gradient-primary);
    color: var(--color-white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all var(--transition-base);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.game-note {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 12px;
    padding: var(--spacing-lg);
}

.note-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
}

.game-note p {
    color: var(--color-gray-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.game-note p:last-child {
    margin-bottom: 0;
}

/* GAMIFICATION SETTINGS PANEL */

.gamification-toggle {
    position: relative;
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(6, 182, 212, 0.15);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(6, 182, 212, 0.3);
    color: var(--color-primary);
    font-size: 24px;
    cursor: pointer;
    z-index: 9998;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    box-shadow:
        0 8px 32px 0 rgba(0, 0, 0, 0.2),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.1),
        0 0 20px rgba(6, 182, 212, 0.2);
}

.gamification-toggle:hover {
    background: rgba(6, 182, 212, 0.25);
    border-color: rgba(6, 182, 212, 0.6);
    transform: scale(1.1) rotate(15deg);
    box-shadow:
        0 12px 40px 0 rgba(6, 182, 212, 0.3),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.2),
        0 0 40px rgba(6, 182, 212, 0.4);
    color: var(--color-primary-light);
}

.gamification-toggle:active {
    transform: scale(0.95);
    background: rgba(6, 182, 212, 0.3);
}

/* Click Me Tooltip */
.click-me-tooltip {
    position: absolute;
    bottom: 75px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(6, 182, 212, 0.95);
    color: var(--color-white);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    pointer-events: none;
    z-index: 10000;
}

.click-me-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: rgba(6, 182, 212, 0.95);
}

.click-me-tooltip.show {
    opacity: 1;
    visibility: visible;
    animation: tooltipBounce 2s ease-in-out infinite;
}

@keyframes tooltipBounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(-5px);
    }
}

.gamification-panel {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 350px;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.9);
    transition: all var(--transition-base);
}

.gamification-panel.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.gamification-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.gamification-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-white);
    display: flex;
    align-items: center;
    gap: 10px;
}

.gamification-header i {
    color: var(--color-primary);
}

.close-panel {
    background: transparent;
    border: none;
    color: var(--color-gray-light);
    font-size: 20px;
    cursor: pointer;
    padding: 5px;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-base);
}

.close-panel:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    transform: rotate(90deg);
}

.gamification-options {
    padding: var(--spacing-md);
}

.gamification-panel::-webkit-scrollbar {
    width: 6px;
}

.gamification-panel::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

.gamification-panel::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 10px;
}

.gamification-panel::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-light);
}

.option-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Hide mobile-only options on desktop */
.option-item.mobile-only {
    display: none;
}

.option-item:last-of-type {
    border-bottom: none;
}

.option-label {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-light);
    font-size: 0.95rem;
}

.option-label i {
    color: var(--color-primary);
    font-size: 1.1rem;
    width: 20px;
}

/* Icon Toggle Button */
.icon-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.icon-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}

.toggle-icon {
    position: relative;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.toggle-icon i {
    font-size: 1.1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: absolute;
}

/* Off state - show eye-slash */
.toggle-icon .icon-on {
    opacity: 0;
    transform: scale(0.5) rotate(-90deg);
}

.toggle-icon .icon-off {
    opacity: 1;
    transform: scale(1) rotate(0deg);
    color: rgba(255, 255, 255, 0.4);
}

/* Checked state - show eye */
.icon-toggle input:checked+.toggle-icon {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.2), rgba(139, 92, 246, 0.2));
    border-color: var(--color-primary);
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.3), inset 0 0 15px rgba(6, 182, 212, 0.1);
}

.icon-toggle input:checked+.toggle-icon .icon-on {
    opacity: 1;
    transform: scale(1) rotate(0deg);
    color: var(--color-primary);
    text-shadow: 0 0 10px rgba(6, 182, 212, 0.5);
}

.icon-toggle input:checked+.toggle-icon .icon-off {
    opacity: 0;
    transform: scale(0.5) rotate(90deg);
}

/* Hover state */
.toggle-icon:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.icon-toggle input:checked+.toggle-icon:hover {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.3), rgba(139, 92, 246, 0.3));
    box-shadow: 0 0 25px rgba(6, 182, 212, 0.4), inset 0 0 20px rgba(6, 182, 212, 0.15);
}

/* Active/pressed state */
.toggle-icon:active {
    transform: scale(0.95);
}

/* Focus state for accessibility */
.icon-toggle input:focus+.toggle-icon {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.option-hint {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: none;
    /* Hidden by default on desktop */
    align-items: center;
    gap: 8px;
    color: var(--color-gray-light);
}

.option-hint i {
    color: var(--color-primary);
}

.option-hint small {
    font-size: 0.85rem;
    line-height: 1.4;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .click-me-tooltip {
        bottom: 65px;
        font-size: 0.8rem;
        padding: 6px 12px;
    }

    .gamification-toggle {
        width: 50px;
        height: 50px;
        font-size: 20px;
        bottom: 20px;
        right: 20px;
        z-index: 9998;
    }

    .gamification-panel {
        width: calc(100vw - 40px);
        right: 20px;
        bottom: 85px;
        max-height: calc(100vh - 120px);
        overflow-y: auto;
    }

    .gamification-header h3 {
        font-size: 1rem;
    }

    .option-label {
        font-size: 0.9rem;
    }

    /* Hide cursor trail, card tilt, and click ripples options on mobile since they don't work on mobile */
    .option-item:has(#cursorTrailToggle),
    .option-item:has(#cardTiltToggle),
    .option-item:has(#rippleToggle) {
        display: none;
    }

    /* Show desktop hint only on mobile */
    .option-hint {
        display: flex;
    }
}

/* scroll progress indicator */

.scroll-progress-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(255, 255, 255, 0.05);
    z-index: 10000;
    overflow: hidden;
}

.scroll-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 50%, var(--color-accent) 100%);
    width: 0%;
    transition: width 0.1s ease-out;
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.5);
}

/* section header reveal animations */

.section-header {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.section-header.revealed {
    opacity: 1;
    transform: translateY(0);
}

.section-header.revealed .section-number {
    animation: numberPulse 0.6s ease-out 0.2s;
}

.section-header.revealed .section-title {
    animation: slideInLeft 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.3s backwards;
}

.section-header.revealed .section-line {
    animation: lineGrow 0.8s ease-out 0.5s backwards;
}

@keyframes numberPulse {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }

    50% {
        transform: scale(1.1);
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes slideInLeft {
    from {
        transform: translateX(-30px);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes lineGrow {
    from {
        transform: scaleX(0);
        transform-origin: left;
        opacity: 0;
    }

    to {
        transform: scaleX(1);
        opacity: 1;
    }
}

/* timeline line drawing animation */

.experience-timeline {
    position: relative;
}

.experience-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 2px;
    height: 0;
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    transition: height 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.experience-timeline.draw-line::before {
    height: 100%;
}

/* Enhance timeline items to fade in after line draws */
.experience-timeline.draw-line .timeline-item {
    animation: fadeInUp 0.6s ease-out backwards;
}

.experience-timeline.draw-line .timeline-item:nth-child(1) {
    animation-delay: 0.3s;
}

.experience-timeline.draw-line .timeline-item:nth-child(2) {
    animation-delay: 0.5s;
}

.experience-timeline.draw-line .timeline-item:nth-child(3) {
    animation-delay: 0.7s;
}

.experience-timeline.draw-line .timeline-item:nth-child(4) {
    animation-delay: 0.9s;
}

.experience-timeline.draw-line .timeline-item:nth-child(5) {
    animation-delay: 1.1s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Career Journey Timeline Section */

.journey-section {
    position: relative;
    overflow: hidden;
}

.journey-container {
    max-width: 1000px;
    margin: 0 auto;
}

.journey-timeline-visual {
    position: relative;
    padding: var(--spacing-xl) 0;
}

.journey-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg,
            var(--color-primary) 0%,
            var(--color-secondary) 50%,
            var(--color-accent) 100%);
    transform: translateX(-50%) scaleY(0);
    transform-origin: top;
    transition: transform 2s cubic-bezier(0.4, 0, 0.2, 1);
}

.journey-section.animated .journey-line {
    transform: translateX(-50%) scaleY(1);
}

.journey-milestone {
    position: relative;
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-2xl);
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.journey-section.animated .journey-milestone {
    opacity: 1;
    transform: translateY(0);
}

.journey-milestone:nth-child(even) {
    flex-direction: row-reverse;
}

.journey-milestone:nth-child(1) {
    transition-delay: 0.2s;
}

.journey-milestone:nth-child(2) {
    transition-delay: 0.3s;
}

.journey-milestone:nth-child(3) {
    transition-delay: 0.4s;
}

.journey-milestone:nth-child(4) {
    transition-delay: 0.5s;
}

.journey-milestone:nth-child(5) {
    transition-delay: 0.6s;
}

.journey-milestone:nth-child(6) {
    transition-delay: 0.7s;
}

.journey-milestone:nth-child(7) {
    transition-delay: 0.8s;
}

.journey-milestone:nth-child(8) {
    transition-delay: 0.9s;
}

.journey-milestone:nth-child(9) {
    transition-delay: 1.0s;
}

.milestone-dot {
    position: absolute;
    left: 50%;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 3px solid var(--color-dark);
    transform: translateX(-50%);
    z-index: 2;
    transition: all 0.3s ease;
    box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.7);
    animation: pulse-dot 2s infinite;
}

.milestone-dot[data-category="education"] {
    background: var(--color-secondary);
    box-shadow: 0 0 0 0 rgba(139, 92, 246, 0.7);
}

.milestone-dot[data-category="work"] {
    background: var(--color-primary);
    box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.7);
}

.milestone-dot[data-category="current"] {
    background: var(--color-accent);
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.8);
    animation: pulse-current 1.5s infinite;
}

.milestone-dot.current {
    width: 24px;
    height: 24px;
}

@keyframes pulse-dot {
    0% {
        box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.7);
    }

    70% {
        box-shadow: 0 0 0 10px rgba(6, 182, 212, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(6, 182, 212, 0);
    }
}

@keyframes pulse-current {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(245, 158, 11, 0.8);
        transform: translateX(-50%) scale(1);
    }

    50% {
        box-shadow: 0 0 30px rgba(245, 158, 11, 1);
        transform: translateX(-50%) scale(1.1);
    }
}

.milestone-content {
    width: 45%;
    padding: var(--spacing-lg);
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
}

.milestone-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(6, 182, 212, 0.3);
}

.journey-milestone:nth-child(even) .milestone-content {
    text-align: left;
}

.journey-milestone:nth-child(odd) .milestone-content {
    text-align: right;
}

.milestone-year {
    display: inline-block;
    font-family: var(--font-code);
    font-size: 0.875rem;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    padding: 4px 12px;
    background: rgba(6, 182, 212, 0.1);
    border-radius: 20px;
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.milestone-content h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-light);
}

.milestone-content p {
    font-size: 0.9375rem;
    color: var(--color-gray-light);
    line-height: 1.5;
}

.current-badge-small {
    display: inline-block;
    margin-top: var(--spacing-sm);
    padding: 4px 12px;
    background: var(--gradient-accent);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Journey Stats */

.journey-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.stat-card {
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.3s ease;
    cursor: default;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(6, 182, 212, 0.2);
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-gray-light);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Hover effect for section title */
.hover-shimmer {
    position: relative;
    overflow: hidden;
}

.hover-shimmer::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.hover-shimmer:hover::after {
    left: 100%;
}

/* Navigation dot color for projects section */
.nav-dot[data-section="projects"].active {
    background: #10b981;
    border-color: #10b981;
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.6);
}

/* Navigation dot color for github-activity section */
.nav-dot[data-section="github-activity"].active {
    background: #8b5cf6;
    border-color: #8b5cf6;
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.6);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .journey-line {
        left: 20px;
    }

    .journey-milestone {
        flex-direction: column !important;
        align-items: flex-start;
        padding-left: 50px;
    }

    .milestone-dot {
        left: 20px;
    }

    .milestone-content {
        width: 100%;
        text-align: left !important;
    }

    .journey-milestone:nth-child(odd) .milestone-content {
        text-align: left;
    }

    .journey-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .stat-icon {
        font-size: 2rem;
    }
}

/* GitHub Activity Section */

.github-section {
    position: relative;
}

.github-activity-container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Contribution Heatmap */
.contribution-chart {
    padding: var(--spacing-lg) !important;
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
}

.contribution-chart h4 {
    font-size: 1rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.contribution-chart h4 i {
    color: var(--color-primary);
}

.contribution-chart img {
    width: 100%;
    border-radius: 8px;
    filter: brightness(0.95);
    transition: filter var(--transition-base);
}

.contribution-chart:hover img {
    filter: brightness(1.1);
}

.activity-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.activity-header-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.github-icon {
    font-size: 3rem;
    color: var(--color-primary);
}

.activity-header h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-light);
}

.activity-header p {
    color: var(--color-gray-light);
    font-size: 0.875rem;
}

.github-profile-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--gradient-primary);
    color: var(--color-white);
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.github-profile-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(6, 182, 212, 0.5);
}

.activity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.activity-card {
    padding: var(--spacing-lg);
    min-height: 300px;
    display: flex;
    flex-direction: column;
}

.activity-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--glass-border);
}

.activity-card-header i {
    color: var(--color-primary);
    font-size: 1.25rem;
}

.activity-card-header h4 {
    font-size: 1.125rem;
    color: var(--color-light);
}

.activity-list {
    flex: 1;
    overflow-y: auto;
    max-height: 400px;
}

.activity-item {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.02);
    border-radius: 8px;
    border-left: 3px solid var(--color-primary);
    transition: all 0.3s ease;
}

.activity-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-left-color: var(--color-secondary);
    transform: translateX(5px);
}

.activity-item-title {
    font-weight: 600;
    color: var(--color-light);
    margin-bottom: 4px;
    font-size: 0.9rem;
}

.activity-item-desc {
    font-size: 0.875rem;
    color: var(--color-gray-light);
    margin-bottom: 4px;
}

.activity-item-time {
    font-size: 0.75rem;
    color: var(--color-gray);
    font-family: var(--font-code);
}

.activity-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 200px;
    gap: var(--spacing-md);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(6, 182, 212, 0.1);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.activity-loading p {
    color: var(--color-gray-light);
    font-size: 0.875rem;
}

.activity-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 200px;
    gap: var(--spacing-sm);
    color: var(--color-error);
}

.activity-error i {
    font-size: 2rem;
}

.github-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.02);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-3px);
}

.stat-item-number {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.stat-item-label {
    font-size: 0.875rem;
    color: var(--color-gray-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.repo-link {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.repo-link:hover {
    color: var(--color-primary-light);
    text-decoration: underline;
}

.hover-code {
    position: relative;
    font-family: var(--font-code);
}

.hover-code::before {
    content: '< ';
    opacity: 0;
    transition: opacity 0.3s ease;
}

.hover-code::after {
    content: ' />';
    opacity: 0;
    transition: opacity 0.3s ease;
}

.hover-code:hover::before,
.hover-code:hover::after {
    opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {

    /* Hide animated grid on mobile */
    #gridCanvas {
        display: none !important;
    }

    .activity-header {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .activity-header-content {
        flex-direction: column;
    }

    .activity-grid {
        grid-template-columns: 1fr;
    }

    .github-stats {
        grid-template-columns: 1fr;
    }

    /* Course Info Modal Mobile Styles */
    .course-info-modal {
        max-width: 95%;
        margin: 20px;
    }

    .course-info-content {
        padding: var(--spacing-md);
    }

    .course-header h2 {
        font-size: 1.25rem;
    }

    .course-icon {
        width: 60px;
        height: 60px;
        font-size: 2rem;
    }

    .course-section h3 {
        font-size: 1.1rem;
    }

    .course-skills-list {
        grid-template-columns: 1fr;
    }

    .tool-badge {
        font-size: 0.8rem;
        padding: 6px 12px;
    }

    .progress-text {
        font-size: 0.75rem;
    }

    .course-link-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.875rem;
    }

    .learning-highlights {
        grid-template-columns: 1fr;
    }

    .highlight-item h4 {
        font-size: 0.95rem;
    }

    .highlight-item p {
        font-size: 0.825rem;
    }
}

/* ============================================================
   DASHBOARD SIDE NAVIGATION
   ============================================================ */

:root {
    --rail-width: 60px;
    --panel-width: 260px;
}

/* Offset all page content to the right of the icon rail */
body {
    padding-left: var(--rail-width);
}

.side-nav {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 1000;
    display: flex;
}

/* ---- Icon Rail ---- */
.side-nav-rail {
    width: var(--rail-width);
    height: 100%;
    background: #090e1a;
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem 0;
    position: relative;
    z-index: 2;
    flex-shrink: 0;
}

.rail-logo {
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.7rem;
    color: white;
    margin-bottom: 1.25rem;
    letter-spacing: -0.5px;
    flex-shrink: 0;
}

/* Rail socials section */
.rail-socials {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
    width: 100%;
    padding: 0.5rem 8px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    flex-shrink: 0;
}

.rail-social-icon {
    color: #475569;
}

.rail-social-icon:hover {
    color: var(--color-primary);
}

.rail-icons {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: none;
    width: 100%;
    padding: 0 8px;
}

.rail-icons::-webkit-scrollbar {
    display: none;
}

.rail-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    color: #475569;
    text-decoration: none;
    transition: all 0.2s ease;
    position: relative;
    font-size: 0.95rem;
    flex-shrink: 0;
}

.rail-icon:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #cbd5e1;
}

.rail-icon.active {
    background: rgba(6, 182, 212, 0.15);
    color: var(--color-primary);
}

/* Rail tooltip on hover */
.rail-tooltip {
    position: absolute;
    left: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%);
    background: #1e293b;
    color: #f8fafc;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 100;
    font-family: var(--font-primary);
    font-weight: 500;
}

.rail-icon:hover .rail-tooltip {
    opacity: 1;
}

/* Rail footer: theme + expand buttons */
.rail-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    width: 100%;
    padding-left: 8px;
    padding-right: 8px;
}

.rail-theme-btn,
.rail-expand-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: #475569;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.rail-theme-btn:hover,
.rail-expand-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #cbd5e1;
}

/* ---- Expanded Panel ---- */
.side-nav-panel {
    width: var(--panel-width);
    height: 100%;
    background: #111827;
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    flex-direction: column;
    transform: translateX(calc(-100% - var(--rail-width)));
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: absolute;
    left: var(--rail-width);
    top: 0;
    z-index: 1;
    overflow: hidden;
}

.side-nav-panel.open {
    transform: translateX(0);
}

/* Panel Header: avatar + name + close */
.panel-header {
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    flex-shrink: 0;
}

.panel-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.panel-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--color-primary);
    flex-shrink: 0;
}

.panel-profile-info {
    display: flex;
    flex-direction: column;
}

.panel-name {
    font-weight: 600;
    font-size: 0.875rem;
    color: #f1f5f9;
    line-height: 1.2;
}

.panel-role {
    font-size: 0.7rem;
    color: #64748b;
}

.panel-close-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: #475569;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.panel-close-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #cbd5e1;
}

/* Panel nav items */
.panel-nav {
    padding: 0.75rem 0.625rem;
    flex-shrink: 0;
}

.panel-socials {
    padding: 0.75rem 0.625rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    flex-shrink: 0;
}

.panel-section-label {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #334155;
    padding: 0 0.5rem;
    margin-bottom: 0.4rem;
}

.panel-nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.55rem 0.75rem;
    border-radius: 8px;
    text-decoration: none;
    color: #64748b;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.15s ease;
    margin-bottom: 0.1rem;
}

.panel-nav-item i {
    width: 15px;
    text-align: center;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.panel-nav-item:hover {
    background: rgba(255, 255, 255, 0.06);
    color: #e2e8f0;
}

.panel-nav-item.active {
    background: rgba(6, 182, 212, 0.12);
    color: var(--color-primary);
}

/* Social links in panel */
.panel-social-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.55rem 0.75rem;
    border-radius: 8px;
    text-decoration: none;
    color: #64748b;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.15s ease;
    margin-bottom: 0.1rem;
}

.panel-social-link i {
    width: 15px;
    text-align: center;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.panel-social-link:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-primary);
}

/* Panel footer: theme toggle */
.panel-footer {
    margin-top: auto;
    padding: 0.625rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    flex-shrink: 0;
}

.panel-theme-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0.75rem;
    border-radius: 8px;
    border: none;
    background: transparent;
    color: #64748b;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    width: 100%;
    transition: all 0.15s ease;
    font-family: var(--font-primary);
}

.panel-theme-btn:hover {
    background: rgba(255, 255, 255, 0.06);
    color: #e2e8f0;
}

.panel-theme-btn i {
    width: 15px;
    text-align: center;
    flex-shrink: 0;
}

/* Toggle track (pill switch) */
.toggle-track {
    margin-left: auto;
    width: 34px;
    height: 18px;
    background: #334155;
    border-radius: 100px;
    position: relative;
    transition: background 0.25s ease;
    flex-shrink: 0;
}

.toggle-track.active {
    background: var(--color-primary);
}

.toggle-thumb {
    width: 12px;
    height: 12px;
    background: white;
    border-radius: 50%;
    position: absolute;
    top: 3px;
    left: 3px;
    transition: transform 0.25s ease;
}

.toggle-track.active .toggle-thumb {
    transform: translateX(16px);
}

/* Side nav overlay (mobile) */
.side-nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 999;
    backdrop-filter: blur(2px);
}

.side-nav-overlay.active {
    display: block;
}

/* ============================================================
   LIGHT MODE THEME OVERRIDES — Polished Clean Theme
   ============================================================ */

[data-theme="light"] {
    --color-dark: #f8fafc;
    --color-dark-alt: #f1f5f9;
    --color-light: #0f172a;
    --color-gray: #64748b;
    --color-gray-light: #475569;
    --glass-bg: #ffffff;
    --glass-border: #e2e8f0;
    --glass-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.07);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.09);
    --shadow-xl: 0 16px 40px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.18);
}

/* ---- Body ---- */
[data-theme="light"] body {
    background: #f8fafc;
    color: #0f172a;
}

/* Soften orbs on light background */
[data-theme="light"] .animated-background {
    opacity: 0.15;
}

/* ---- Typography ---- */
[data-theme="light"] h1,
[data-theme="light"] h2,
[data-theme="light"] h3,
[data-theme="light"] h4,
[data-theme="light"] h5 {
    color: #0f172a;
}

[data-theme="light"] p {
    color: #475569;
}

/* ---- Hero ---- */
[data-theme="light"] .terminal-text {
    color: var(--color-primary-dark);
}

[data-theme="light"] .hero-subtitle,
[data-theme="light"] .hero-description {
    color: #475569;
}

/* ---- Section headers ---- */
[data-theme="light"] .section-number {
    color: rgba(6, 182, 212, 0.35);
}

[data-theme="light"] .section-title {
    color: #0f172a;
}

[data-theme="light"] .section-line {
    background: var(--gradient-primary);
}

/* ---- Glass cards — clean white with border ---- */
[data-theme="light"] .glass-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

[data-theme="light"] .glass-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 8px 28px rgba(6, 182, 212, 0.1);
}

/* ---- Buttons ---- */
[data-theme="light"] .btn-secondary {
    background: #ffffff;
    color: #334155;
    border: 1.5px solid #e2e8f0;
    backdrop-filter: none;
}

[data-theme="light"] .btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(6, 182, 212, 0.04);
    box-shadow: 0 0 18px rgba(6, 182, 212, 0.12);
}

/* ---- Tags & skill badges ---- */
[data-theme="light"] .skill-tag,
[data-theme="light"] .tech-tag,
[data-theme="light"] .tag {
    background: #f1f5f9;
    border-color: #e2e8f0;
    color: #475569;
}

[data-theme="light"] .skill-tag:hover,
[data-theme="light"] .tech-tag:hover {
    background: rgba(6, 182, 212, 0.07);
    border-color: var(--color-primary);
    color: var(--color-primary-dark);
}

/* ---- Timeline ---- */
[data-theme="light"] .timeline-marker {
    background: #ffffff;
    border-color: var(--color-primary);
}

[data-theme="light"] .timeline-item:hover .timeline-marker {
    background: var(--color-primary);
    box-shadow: 0 0 12px rgba(6, 182, 212, 0.3);
}

[data-theme="light"] .timeline-date,
[data-theme="light"] .timeline-location {
    color: #64748b;
}

[data-theme="light"] .timeline-description {
    color: #475569;
}

/* ---- Contact buttons ---- */
[data-theme="light"] .contact-btn {
    background: #ffffff;
    border-color: #e2e8f0;
    color: #334155;
}

[data-theme="light"] .contact-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(6, 182, 212, 0.04);
    box-shadow: 0 0 18px rgba(6, 182, 212, 0.12);
}

/* ---- GitHub profile button ---- */
[data-theme="light"] .github-profile-btn {
    box-shadow: 0 4px 16px rgba(6, 182, 212, 0.2);
}

/* ---- Activity feed ---- */
[data-theme="light"] .activity-item {
    background: #f8fafc;
    border-left-color: var(--color-primary);
}

[data-theme="light"] .activity-item:hover {
    background: #f1f5f9;
}

[data-theme="light"] .activity-item-title {
    color: #0f172a;
}

[data-theme="light"] .activity-item-desc {
    color: #475569;
}

[data-theme="light"] .activity-item-time {
    color: #94a3b8;
}

/* ---- Scroll progress container ---- */
[data-theme="light"] .scroll-progress-container {
    background: rgba(0, 0, 0, 0.05);
}

/* ---- Scrollbar ---- */
[data-theme="light"] ::-webkit-scrollbar-track {
    background: #f1f5f9;
}

[data-theme="light"] * {
    scrollbar-color: var(--color-primary) #e2e8f0;
}

/* ---- Gamification toggle button ---- */
[data-theme="light"] .gamification-toggle {
    background: rgba(6, 182, 212, 0.08);
    border-color: rgba(6, 182, 212, 0.2);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .gamification-toggle:hover {
    background: rgba(6, 182, 212, 0.15);
    box-shadow: 0 8px 24px rgba(6, 182, 212, 0.15);
}

/* ---- Gamification panel ---- */
[data-theme="light"] .gamification-panel {
    background: #ffffff;
    border-color: #e2e8f0;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .gamification-header {
    border-bottom-color: #f1f5f9;
}

[data-theme="light"] .gamification-header h3 {
    color: #0f172a;
}

[data-theme="light"] .option-item {
    border-bottom-color: #f1f5f9;
}

[data-theme="light"] .option-label {
    color: #334155;
}

[data-theme="light"] .toggle-icon {
    background: #f8fafc;
    border-color: #e2e8f0;
}

/* ---- Side nav panel ---- */
[data-theme="light"] .side-nav-rail {
    background: #1e293b;
    border-right-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .side-nav-panel {
    background: #ffffff;
    border-right-color: #e2e8f0;
}

[data-theme="light"] .panel-header {
    border-bottom-color: #f1f5f9;
}

[data-theme="light"] .panel-name {
    color: #0f172a;
}

[data-theme="light"] .panel-role {
    color: #64748b;
}

[data-theme="light"] .panel-close-btn {
    color: #94a3b8;
}

[data-theme="light"] .panel-close-btn:hover {
    background: #f8fafc;
    color: #0f172a;
}

[data-theme="light"] .panel-section-label {
    color: #94a3b8;
}

[data-theme="light"] .panel-nav-item {
    color: #64748b;
}

[data-theme="light"] .panel-nav-item:hover {
    background: #f8fafc;
    color: #0f172a;
}

[data-theme="light"] .panel-nav-item.active {
    background: rgba(6, 182, 212, 0.08);
    color: var(--color-primary-dark);
}

[data-theme="light"] .panel-social-link {
    color: #64748b;
}

[data-theme="light"] .panel-social-link:hover {
    background: #f8fafc;
    color: var(--color-primary-dark);
}

[data-theme="light"] .panel-socials,
[data-theme="light"] .panel-footer {
    border-color: #f1f5f9;
}

[data-theme="light"] .panel-theme-btn {
    color: #64748b;
}

[data-theme="light"] .panel-theme-btn:hover {
    background: #f8fafc;
    color: #0f172a;
}

[data-theme="light"] .toggle-track {
    background: #cbd5e1;
}

[data-theme="light"] .rail-tooltip {
    background: #1e293b;
    color: #f8fafc;
    border-color: rgba(255, 255, 255, 0.1);
}

/* ---- Certification modal ---- */
[data-theme="light"] .glass-modal {
    background: #ffffff;
    border-color: #e2e8f0;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .folder-view h2 {
    color: #0f172a;
}

[data-theme="light"] .cert-folder {
    background: #f8fafc;
    border-color: #e2e8f0;
}

[data-theme="light"] .cert-folder h3 {
    color: #0f172a;
}

[data-theme="light"] .cert-slide h3 {
    color: #0f172a;
}

[data-theme="light"] .course-module span {
    color: #475569;
}

[data-theme="light"] .course-module.completed span {
    color: #0f172a;
}

[data-theme="light"] .course-module-details {
    background: #f1f5f9;
    border-left-color: var(--color-primary);
}

[data-theme="light"] .course-module-details li {
    color: #475569;
}

[data-theme="light"] .course-skills-list li {
    color: #475569;
}

[data-theme="light"] .tool-badge {
    background: #f1f5f9;
    border-color: #e2e8f0;
    color: #475569;
}

[data-theme="light"] .course-module.completed.expandable:hover {
    background: rgba(6, 182, 212, 0.08);
}

[data-theme="light"] .progress-bar {
    background: #e2e8f0;
    border-color: #cbd5e1;
}

/* Mobile hamburger button (hidden on desktop) */
.mobile-hamburger {
    display: none;
}

/* ---- Mobile: hide rail, use floating hamburger ---- */
@media (max-width: 768px) {
    body {
        padding-left: 0;
    }

    /* Hide the entire icon rail */
    .side-nav-rail {
        display: none;
    }

    /* Panel slides in from the left edge */
    .side-nav-panel {
        left: 0;
        transform: translateX(-100%);
        width: min(280px, 85vw);
    }

    .side-nav-panel.open {
        transform: translateX(0);
    }

    /* Floating hamburger button */
    .mobile-hamburger {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 5px;
        position: fixed;
        top: 14px;
        left: 14px;
        width: 40px;
        height: 40px;
        background: rgba(9, 14, 26, 0.85);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        cursor: pointer;
        z-index: 1001;
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        padding: 0;
        transition: background 0.2s ease, border-color 0.2s ease;
    }

    .mobile-hamburger:hover {
        background: rgba(6, 182, 212, 0.15);
        border-color: rgba(6, 182, 212, 0.4);
    }

    .mobile-hamburger span {
        display: block;
        width: 18px;
        height: 2px;
        background: #94a3b8;
        border-radius: 2px;
        transition: all 0.25s ease;
        transform-origin: center;
    }

    /* Animate to X when panel is open */
    .mobile-hamburger.open span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
        background: var(--color-primary);
    }

    .mobile-hamburger.open span:nth-child(2) {
        opacity: 0;
        transform: scaleX(0);
    }

    .mobile-hamburger.open span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
        background: var(--color-primary);
    }

    /* Light mode hamburger */
    [data-theme="light"] .mobile-hamburger {
        background: rgba(255, 255, 255, 0.9);
        border-color: rgba(0, 0, 0, 0.1);
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
    }

    [data-theme="light"] .mobile-hamburger span {
        background: #475569;
    }

    /* Hide hamburger when panel is open (panel has its own close button) */
    .mobile-hamburger.open {
        opacity: 0;
        pointer-events: none;
    }

    /* Make nav section scrollable so footer (theme toggle) stays pinned at bottom */
    .side-nav-panel .panel-nav {
        flex: 1 1 auto;
        overflow-y: auto;
        min-height: 0;
    }

    .side-nav-panel .panel-socials {
        flex-shrink: 0;
    }
}

/* (lime overrides removed) */