/*
==========================================
DESIGN TOKENS & CSS CUSTOM PROPERTIES
Centralized variables for theme consistency
==========================================
*/
:root {
    /* Colors - Professional Light Theme (Inverted) */
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-tertiary: #e2e8f0;
    --bg-card: rgba(255, 255, 255, 0.8);

    /* Accent Colors - Professional & Subtle */
    --accent-primary: #1e293b;
    --accent-secondary: #475569;
    --accent-highlight: #0f172a;

    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;

    /* Professional Accent */
    --accent-cyan: #475569;
    --accent-purple: #52525b;
    --accent-pink: #334155;
    --accent-blue: #1e293b;

    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(0, 0, 0, 0.08);
    --glass-shadow: rgba(0, 0, 0, 0.1);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    --font-size-7xl: 4.5rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-smooth: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode */
[data-theme="dark"] {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --bg-card: rgba(20, 20, 20, 0.9);

    --accent-primary: #e2e8f0;
    --accent-secondary: #94a3b8;
    --accent-highlight: #f1f5f9;

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;

    --accent-cyan: #94a3b8;
    --accent-purple: #a1a1aa;
    --accent-pink: #cbd5e1;
    --accent-blue: #e2e8f0;

    --glass-bg: rgba(20, 20, 20, 0.95);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: rgba(0, 0, 0, 0.5);
}

/* ==========================================
   RESET & BASE STYLES
   ========================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul,
ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ==========================================
   UTILITY CLASSES
   ========================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

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

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: 0 8px 32px var(--glass-shadow);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.12);
}

/* ==========================================
   NAVIGATION
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-4) 0;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-bottom: 1px solid transparent;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    border-bottom-color: var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-12);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    width: 100%;
}

.nav-logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    justify-self: start;
}

.nav-menu {
    display: contents;
    /* Allows children to be grid items of container on desktop */
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    justify-self: center;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    justify-self: end;
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: var(--space-2) 0;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--text-primary);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-cta {
    display: inline-block;
    background: var(--text-primary);
    color: var(--bg-primary) !important;
    padding: var(--space-2) var(--space-5) !important;
    border-radius: var(--radius-full);
    font-weight: 600;
    position: relative;
    overflow: hidden;
    transition: color 0.35s cubic-bezier(0.9, 0, 0.1, 1);
}

.nav-cta::after {
    display: none;
}

.nav-cta::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 0;
    background-color: #2563eb;
    transition: width 0.35s cubic-bezier(0.9, 0, 0.1, 1), left 0s 0.35s;
    z-index: 1;
    border-radius: inherit;
}

.nav-cta:hover {
    color: #ffffff !important;
}

.nav-cta:hover::before {
    width: 100%;
    transition: width 0.35s cubic-bezier(0.9, 0, 0.1, 1);
}

.nav-cta:not(:hover)::before {
    left: auto;
    right: 0;
    transition: width 0.35s cubic-bezier(0.9, 0, 0.1, 1), left 0s;
}

/* Button text must be above the fill */
.nav-cta span {
    position: relative;
    z-index: 2;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.mobile-controls {
    display: none;
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-tertiary);
}

.theme-icon {
    transition: all var(--transition-base);
}

/* Light mode: show sun, hide moon */
.theme-icon.sun {
    display: block;
}

.theme-icon.moon {
    display: none;
}

/* Dark mode: show moon, hide sun */
[data-theme="dark"] .theme-icon.sun {
    display: none;
}

[data-theme="dark"] .theme-icon.moon {
    display: block;
}

/* Dark mode specific overrides */
[data-theme="dark"] .skill-icon-img {
    filter: invert(1);
}

[data-theme="dark"] .usage-segment {
    opacity: 0.9;
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: var(--space-20) var(--space-6);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 0, 0, 0.03), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(0, 0, 0, 0.02), transparent),
        radial-gradient(ellipse 50% 30% at 20% 80%, rgba(0, 0, 0, 0.015), transparent);
}

.hero-particles {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(2px 2px at 20px 30px, rgba(0, 0, 0, 0.08), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(0, 0, 0, 0.06), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(0, 0, 0, 0.1), transparent),
        radial-gradient(2px 2px at 130px 80px, rgba(0, 0, 0, 0.05), transparent),
        radial-gradient(1px 1px at 160px 120px, rgba(0, 0, 0, 0.07), transparent);
    background-size: 200px 200px;
    animation: float 20s linear infinite;
}

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

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

/* Peeking Avatar */
.peeking-avatar {
    position: absolute;
    width: 80px;
    height: 70px;
    bottom: 50px;
    left: 10%;
    z-index: 10;
    color: var(--text-primary);
    opacity: 0;
    transform: translateY(100%) scale(0.8);
    cursor: pointer;
    transition: transform 0.2s ease-out;
    transform-origin: center bottom;
}

.peeking-avatar svg {
    width: 100%;
    height: 100%;
    display: block;
    transition: transform 0.2s ease-out;
}

.peeking-avatar.peek {
    animation: peekUp 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.peeking-avatar.hide {
    animation: peekDown 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes peekUp {
    0% {
        opacity: 0;
        transform: translateY(100%) scale(0.6);
    }

    20% {
        opacity: 1;
    }

    70% {
        transform: translateY(-8%) scale(1.05);
    }

    85% {
        transform: translateY(3%) scale(0.98);
    }

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

@keyframes peekDown {
    0% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }

    10% {
        opacity: 1;
        transform: translateY(-3%) scale(1.01);
    }

    40% {
        opacity: 0;
    }

    100% {
        opacity: 0;
        transform: translateY(60%) scale(0.8);
    }
}

.peeking-avatar:hover {
    transform: translateY(-5px) scale(1.1);
}

.peeking-avatar:hover svg {
    animation: wiggle 0.5s ease-in-out;
}

@keyframes wiggle {

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

    25% {
        transform: rotate(-5deg);
    }

    75% {
        transform: rotate(5deg);
    }
}

/* Mobile sizing for peeking avatar */
@media (max-width: 768px) {
    .peeking-avatar {
        width: 50px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .peeking-avatar {
        width: 40px;
        height: 36px;
    }
}

.hero-content {
    text-align: center;
    max-width: 900px;
}

.hero-greeting {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--space-4);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.hero-name {
    font-size: clamp(2.5rem, 10vw, var(--font-size-7xl));
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-6);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-tagline {
    font-size: clamp(var(--font-size-lg), 3vw, var(--font-size-xl));
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto var(--space-10);
    line-height: 1.7;
}

.hero-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    justify-content: center;
    margin-bottom: var(--space-10);
}

.hero-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: color 0.35s cubic-bezier(0.9, 0, 0.1, 1);
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

.hero-btn.primary {
    background: var(--text-primary);
    color: var(--bg-primary);
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.15);
}

.hero-btn.primary::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 0;
    background-color: #2563eb;
    transition: width 0.35s cubic-bezier(0.9, 0, 0.1, 1), left 0s 0.35s;
    z-index: -1;
    border-radius: inherit;
}

.hero-btn.primary:hover {
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.25);
    color: #ffffff;
}

.hero-btn.primary:hover::before {
    width: 100%;
    transition: width 0.35s cubic-bezier(0.9, 0, 0.1, 1);
}

.hero-btn.primary:not(:hover)::before {
    left: auto;
    right: 0;
    transition: width 0.35s cubic-bezier(0.9, 0, 0.1, 1), left 0s;
}

.hero-btn.secondary {
    background: #2563eb;
    border: 1px solid #2563eb;
    color: #ffffff;
}

.hero-btn.secondary::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 0;
    background-color: var(--text-primary);
    transition: width 0.35s cubic-bezier(0.9, 0, 0.1, 1), left 0s 0.35s;
    z-index: -1;
    border-radius: inherit;
}

.hero-btn.secondary:hover {
    color: var(--bg-primary);
}

.hero-btn.secondary:hover::before {
    width: 100%;
    transition: width 0.35s cubic-bezier(0.9, 0, 0.1, 1);
}

.hero-btn.secondary:not(:hover)::before {
    left: auto;
    right: 0;
    transition: width 0.35s cubic-bezier(0.9, 0, 0.1, 1), left 0s;
}

.hero-social {
    display: flex;
    gap: var(--space-6);
    justify-content: center;
    margin-bottom: var(--space-16);
}

.hero-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.hero-social a:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-tertiary);
    border-radius: var(--radius-full);
    position: relative;
}

.scroll-indicator::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--text-secondary);
    border-radius: var(--radius-full);
    animation: scroll 1.5s ease-in-out infinite;
}

@keyframes scroll {

    0%,
    100% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }

    50% {
        opacity: 0.5;
        transform: translateX(-50%) translateY(10px);
    }
}

/* ==========================================
   ANIMATIONS
   ========================================== */
.animate-fade-in {
    animation: fadeIn 0.8s ease forwards;
}

.animate-slide-up {
    animation: slideUp 0.8s ease forwards;
}

.animate-fade-in-delayed {
    animation: fadeIn 0.8s ease 0.3s forwards;
    opacity: 0;
}

.animate-fade-in-delayed-2 {
    animation: fadeIn 0.8s ease 0.6s forwards;
    opacity: 0;
}

.animate-fade-in-delayed-3 {
    animation: fadeIn 0.8s ease 0.9s forwards;
    opacity: 0;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

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

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

/* Scroll Animations */
.scroll-animate {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-animate.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   SECTIONS
   ========================================== */
.section {
    padding: var(--space-24) 0;
    position: relative;
}

.section-title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-4xl));
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-16);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--text-secondary);
    border-radius: var(--radius-full);
    margin: var(--space-4) auto 0;
}

/* ==========================================
   ABOUT SECTION
   ========================================== */
.about {
    background: var(--bg-secondary);
}

.about-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.about-text {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-4);
}

.about-text:last-of-type {
    margin-bottom: var(--space-10);
}

.about-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-12);
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: var(--space-1);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.about-text-wrapper {
    margin-bottom: var(--space-8);
}

.about-highlights {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    margin-bottom: var(--space-10);
    flex-wrap: wrap;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.highlight-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: var(--text-secondary);
}

.highlight-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.03);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.highlight-item:hover .highlight-icon {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.highlight-item span {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
}


@media (max-width: 600px) {
    .about-text {
        font-size: var(--font-size-base);
    }

    .about-stats {
        gap: var(--space-8);
    }

    .stat-number {
        font-size: var(--font-size-3xl);
    }

    .about-highlights {
        flex-direction: column;
        gap: var(--space-4);
    }

    .highlight-item {
        justify-content: center;
    }
}

/* ==========================================
   EDUCATION SECTION
   ========================================== */
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--text-secondary), var(--text-tertiary));
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    padding-bottom: var(--space-10);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: 12px;
    top: 0;
    width: 18px;
    height: 18px;
    border-radius: var(--radius-full);
    background: var(--bg-primary);
    border: 3px solid var(--text-secondary);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.1);
}

.timeline-content {
    padding: var(--space-6);
}

/* Education Header with Logo */
.education-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-3);
}

.education-logo {
    width: 48px;
    height: 48px;
    object-fit: contain;
    border-radius: var(--radius-md);
    filter: invert(1);
}

[data-theme="dark"] .education-logo {
    filter: invert(0);
}

.timeline-date {
    display: inline-block;
    font-size: var(--font-size-sm);
    color: var(--accent-cyan);
    font-weight: 500;
}

.timeline-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-1);
}

.timeline-content h4 {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.institution {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-3);
}

.education-detail {
    margin-top: var(--space-3);
}

.badge {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

/* Education and Achievement Logo Styling */
.education-logo {
    filter: brightness(0);
    /* Makes logo black in light mode */
    opacity: 0.8;
}

[data-theme="dark"] .education-logo {
    filter: brightness(0) invert(1);
    /* Makes logo white in dark mode */
    opacity: 0.9;
}

/* ==========================================
   EXPERIENCE SECTION - CAREER PATH FLOW
   ========================================== */

/*
===========================================
ORIGINAL EXPERIENCE CSS (PRESERVED FOR ROLLBACK)
===========================================

.experience {
    background: var(--bg-secondary);
}

.experience-grid {
    max-width: 800px;
    margin: 0 auto;
}

.experience-card {
    padding: var(--space-8);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
    gap: var(--space-4);
}

.experience-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: rgba(0, 0, 0, 0.03);
    color: var(--text-secondary);
}

.experience-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    text-align: right;
}

.experience-date {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.experience-location {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.experience-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-2);
}

.experience-company {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
}

.experience-list {
    padding-left: var(--space-5);
}

.experience-list li {
    position: relative;
    padding-left: var(--space-4);
    margin-bottom: var(--space-3);
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    line-height: 1.7;
}

.experience-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: var(--radius-full);
    background: var(--accent-cyan);
}

END OF ORIGINAL CSS
*/

/* ==========================================
   STACKED TIMELINE - ALTERNATING CARDS
   ========================================== */

.experience {
    background: var(--bg-secondary);
}

.experience-grid {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    padding: var(--space-4) 0;
}

/* Central Timeline Line */
.experience-grid::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg,
            transparent 0%,
            var(--text-tertiary) 5%,
            var(--text-tertiary) 95%,
            transparent 100%);
    opacity: 0.3;
    transform: translateX(-50%);
}

/* Experience Card */
.experience-card {
    position: relative;
    width: calc(50% - 40px);
    padding: var(--space-6);
    margin-bottom: var(--space-8);
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.experience-card:last-child {
    margin-bottom: 0;
}

/* Alternating positions */
.experience-card:nth-child(odd) {
    margin-left: 0;
    margin-right: auto;
}

.experience-card:nth-child(even) {
    margin-left: auto;
    margin-right: 0;
}

/* Timeline Dot */
.experience-card::before {
    content: '';
    position: absolute;
    top: 28px;
    width: 14px;
    height: 14px;
    background: var(--bg-primary);
    border: 3px solid var(--text-primary);
    border-radius: var(--radius-full);
    z-index: 2;
    transition: all 0.3s ease;
}

.experience-card:nth-child(odd)::before {
    right: -47px;
}

.experience-card:nth-child(even)::before {
    left: -47px;
}

/* Connector line from card to dot */
.experience-card::after {
    content: '';
    position: absolute;
    top: 33px;
    width: 32px;
    height: 2px;
    background: var(--text-tertiary);
    opacity: 0.4;
}

.experience-card:nth-child(odd)::after {
    right: -32px;
}

.experience-card:nth-child(even)::after {
    left: -32px;
}

/* Hover effects */
.experience-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.1);
}

.experience-card:hover::before {
    background: var(--text-primary);
    transform: scale(1.15);
}

[data-theme="dark"] .experience-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .experience-card::before {
    background: var(--bg-secondary);
}

[data-theme="dark"] .experience-card:hover::before {
    background: var(--text-primary);
}

/* Experience Header */
.experience-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

/* Role Icon */
.experience-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.06), rgba(71, 85, 105, 0.06));
    color: var(--accent-primary);
    flex-shrink: 0;
}

[data-theme="dark"] .experience-icon {
    background: linear-gradient(135deg, rgba(226, 232, 240, 0.08), rgba(148, 163, 184, 0.08));
}

.experience-icon svg {
    width: 24px;
    height: 24px;
}

/* Date & Location Meta */
.experience-meta {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.experience-date {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: 0.01em;
}

.experience-location {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

/* Title and Company */
.experience-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--space-1);
    line-height: 1.35;
    color: var(--text-primary);
}

.experience-company {
    font-size: var(--font-size-sm);
    color: var(--accent-secondary);
    margin-bottom: var(--space-4);
    font-weight: 500;
}

/* Experience List */
.experience-list {
    padding: 0;
    margin: 0;
}

.experience-list li {
    position: relative;
    padding-left: var(--space-5);
    margin-bottom: var(--space-2);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.experience-list li:last-child {
    margin-bottom: 0;
}

.experience-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 9px;
    width: 5px;
    height: 5px;
    border-radius: var(--radius-full);
    background: var(--accent-secondary);
}

/* Responsive - Tablet & Mobile: Stack vertically */
@media (max-width: 768px) {
    .experience-grid {
        padding-left: var(--space-8);
    }

    .experience-grid::before {
        left: 20px;
        transform: none;
    }

    .experience-card {
        width: 100%;
        margin-left: 0 !important;
        margin-right: 0 !important;
        margin-bottom: var(--space-6);
    }

    .experience-card::before {
        left: -36px !important;
        right: auto !important;
    }

    .experience-card::after {
        left: -22px !important;
        right: auto !important;
        width: 18px;
    }
}

@media (max-width: 600px) {
    .experience-grid {
        padding-left: var(--space-6);
    }

    .experience-grid::before {
        left: 14px;
    }

    .experience-card {
        padding: var(--space-5);
    }

    .experience-card::before {
        left: -30px !important;
        width: 12px;
        height: 12px;
        border-width: 2px;
    }

    .experience-card::after {
        left: -18px !important;
        width: 14px;
    }

    .experience-icon {
        width: 40px;
        height: 40px;
    }

    .experience-icon svg {
        width: 20px;
        height: 20px;
    }

    .experience-title {
        font-size: var(--font-size-base);
    }

    .experience-date {
        font-size: var(--font-size-xs);
    }
}

/* ==========================================
   PROJECTS SECTION - BENTO GRID LAYOUT
   ========================================== */

/* 
===========================================
ORIGINAL PROJECTS CSS (PRESERVED FOR ROLLBACK)
To revert: Uncomment below and delete Bento grid styles
===========================================

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-8);
}

.project-card {
    padding: var(--space-8);
    display: flex;
    flex-direction: column;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-5);
}

.project-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.2), rgba(139, 92, 246, 0.2));
    color: var(--accent-cyan);
}

.project-date {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.project-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-3);
}

.project-title a {
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

.project-title a:hover {
    color: var(--accent-cyan);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-5);
    line-height: 1.7;
}

.project-features {
    margin-bottom: var(--space-6);
    padding-left: var(--space-4);
    flex-grow: 1;
}

.project-features li {
    position: relative;
    padding-left: var(--space-4);
    margin-bottom: var(--space-2);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.project-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--text-secondary);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: auto;
}

.tech-tag {
    padding: var(--space-1) var(--space-3);
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--text-secondary);
}

.project-status {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
}

.project-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    margin-top: var(--space-4);
    padding: var(--space-3) var(--space-5);
    background: var(--text-primary);
    color: var(--bg-primary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    position: relative;
    overflow: hidden;
    transition: color 0.35s cubic-bezier(0.9, 0, 0.1, 1);
    isolation: isolate;
}

.project-btn::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 0;
    background-color: #2563eb;
    transition: width 0.35s cubic-bezier(0.9, 0, 0.1, 1), left 0s 0.35s;
    z-index: -1;
    border-radius: inherit;
}

.project-btn:hover {
    color: #ffffff;
}

.project-btn:hover::before {
    width: 100%;
    transition: width 0.35s cubic-bezier(0.9, 0, 0.1, 1);
}

.project-btn:not(:hover)::before {
    left: auto;
    right: 0;
    transition: width 0.35s cubic-bezier(0.9, 0, 0.1, 1), left 0s;
}

END OF ORIGINAL CSS
*/

/* ==========================================
   BENTO GRID - MODERN MASONRY LAYOUT
   ========================================== */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: minmax(180px, auto);
    gap: var(--space-5);
    max-width: 1100px;
    margin: 0 auto;
}

/* Featured projects span 2 columns */
.project-card.featured {
    grid-column: span 2;
}

/* Tall projects for visual variety */
.project-card.tall {
    grid-row: span 2;
}

.project-card {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.2, 0, 0, 1),
        box-shadow 0.4s cubic-bezier(0.2, 0, 0, 1),
        border-color 0.3s ease;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-card:hover::before {
    opacity: 1;
}

.project-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
    border-color: rgba(0, 0, 0, 0.12);
}

[data-theme="dark"] .project-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
    border-color: rgba(255, 255, 255, 0.12);
}

/* Project Header - Compact */
.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-4);
}

.project-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.08), rgba(71, 85, 105, 0.08));
    color: var(--accent-primary);
    flex-shrink: 0;
}

[data-theme="dark"] .project-icon {
    background: linear-gradient(135deg, rgba(226, 232, 240, 0.1), rgba(148, 163, 184, 0.1));
}

.project-icon svg {
    width: 22px;
    height: 22px;
}

.project-date {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    font-weight: 500;
    padding: var(--space-1) var(--space-2);
    background: rgba(0, 0, 0, 0.03);
    border-radius: var(--radius-sm);
}

[data-theme="dark"] .project-date {
    background: rgba(255, 255, 255, 0.05);
}

/* Project Content */
.project-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--space-2);
    line-height: 1.3;
}

.project-card.featured .project-title {
    font-size: var(--font-size-xl);
}

.project-title a {
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

.project-title a:hover {
    color: var(--accent-secondary);
}

.project-description {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    margin-bottom: var(--space-4);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-card.featured .project-description,
.project-card.tall .project-description {
    -webkit-line-clamp: 4;
    line-clamp: 4;
}

/* Hide features list in bento layout */
.project-features {
    display: none;
}

/* Tech Tags - Compact */
.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: auto;
    margin-bottom: var(--space-3);
}

.tech-tag {
    padding: 4px 10px;
    background: rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
    transition: all 0.2s ease;
}

[data-theme="dark"] .tech-tag {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.08);
}

.project-card:hover .tech-tag {
    background: rgba(0, 0, 0, 0.06);
    border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .project-card:hover .tech-tag {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.12);
}

/* Project Button - Refined */
.project-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 10px 18px;
    background: var(--text-primary);
    color: var(--bg-primary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    position: relative;
    overflow: hidden;
    transition: color 0.35s cubic-bezier(0.9, 0, 0.1, 1), transform 0.2s ease;
    isolation: isolate;
    align-self: flex-start;
    margin-top: auto;
}

.project-btn svg {
    width: 14px;
    height: 14px;
    transition: transform 0.2s ease;
}

.project-btn:hover svg {
    transform: translateX(2px);
}

.project-btn::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 0;
    background-color: #2563eb;
    transition: width 0.35s cubic-bezier(0.9, 0, 0.1, 1), left 0s 0.35s;
    z-index: -1;
    border-radius: inherit;
}

.project-btn:hover {
    color: #ffffff;
}

.project-btn:hover::before {
    width: 100%;
    transition: width 0.35s cubic-bezier(0.9, 0, 0.1, 1);
}

.project-btn:not(:hover)::before {
    left: auto;
    right: 0;
    transition: width 0.35s cubic-bezier(0.9, 0, 0.1, 1), left 0s;
}

.project-status {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
}

/* Responsive Bento Grid */
@media (max-width: 900px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-4);
    }

    .project-card.featured {
        grid-column: span 2;
    }

    .project-card.tall {
        grid-row: span 1;
    }
}

@media (max-width: 600px) {
    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .project-card.featured,
    .project-card.tall {
        grid-column: span 1;
        grid-row: span 1;
    }

    .project-card {
        padding: var(--space-5);
    }
}

/* ==========================================
   SKILLS SECTION - ICON GRID
   ========================================== */
.skills {
    background: var(--bg-secondary);
}

.skills-subtitle {
    text-align: center;
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-top: calc(var(--space-8) * -1);
    margin-bottom: var(--space-8);
}

/* Usage Bar */
.usage-bar-container {
    max-width: 800px;
    margin: 0 auto var(--space-12);
}

.usage-bar {
    display: flex;
    height: 10px;
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.usage-segment {
    height: 100%;
    transition: all var(--transition-base);
}

.usage-segment:first-child {
    border-radius: var(--radius-full) 0 0 var(--radius-full);
}

.usage-segment:last-child {
    border-radius: 0 var(--radius-full) var(--radius-full) 0;
}

.usage-legend {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-4) var(--space-6);
    margin-top: var(--space-4);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
}

.skills-icon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--space-6);
    max-width: 900px;
    margin: 0 auto;
}

@media (max-width: 600px) {
    .skills-icon-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-4);
    }
}

.skill-icon-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-5);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: default;
}

.skill-icon-item:hover {
    background: rgba(87, 83, 78, 0.1);
    transform: translateY(-4px);
}

.skill-icon-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    opacity: 0.85;
    transition: all var(--transition-base);
}

.skill-icon-item:hover .skill-icon-img {
    opacity: 1;
    transform: scale(1.1);
}

.skill-icon-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    text-align: center;
    transition: color var(--transition-base);
}

.skill-icon-item:hover .skill-icon-name {
    color: var(--text-primary);
}

/* Logo Loop Animation */
.logo-loop-container {
    width: 100%;
    overflow: hidden;
    margin: var(--space-12) 0 var(--space-16);
    position: relative;
    padding: var(--space-8) 0;
}


.logo-loop-track {
    display: flex;
    gap: var(--space-12);
    animation: scroll 30s linear infinite;
    width: fit-content;
}

.logo-loop-track:hover {
    animation-play-state: paused;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-25%);
    }
}

.logo-loop-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    min-width: 80px;
    height: 80px;
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.logo-loop-item:hover {
    transform: scale(1.05);
}

.logo-loop-item img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    filter: grayscale(1) opacity(0.6);
    transition: filter var(--transition-base);
}

.logo-loop-item:hover img {
    filter: grayscale(0) opacity(1);
}

/* Dark Mode Logo Loop */
[data-theme="dark"] .logo-loop-item img {
    filter: grayscale(1) invert(1) opacity(0.8);
}

[data-theme="dark"] .logo-loop-item:hover img {
    filter: grayscale(0) invert(1) opacity(1);
}

/* ==========================================
   ACHIEVEMENTS SECTION - 3D FLIP CARDS
   ==========================================*/
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
    max-width: 1200px;
    margin: 0 auto;
}

/* 3D Flip Card Container */
.achievement-flip-container {
    perspective: 1500px;
    height: 400px;
    position: relative;
}

/* The Card Itself */
.achievement-flip-card {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transform-origin: center center;
    transition: transform 0.7s cubic-bezier(0.4, 0.0, 0.2, 1);
    cursor: pointer;
    will-change: transform;
}

.achievement-flip-card.flipped {
    transform: rotateY(180deg);
}

.achievement-flip-card:focus {
    outline: none;
}

.achievement-flip-card.animating {
    pointer-events: none;
}

/* Front and Back Faces - Base Styles */
.achievement-front,
.achievement-back {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    -moz-backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
    text-align: center;
    overflow: hidden;
    border-radius: var(--radius-xl);
    transform-style: preserve-3d;
}

/* Front Face */
.achievement-front {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    z-index: 2;
    transform: rotateY(0deg);
}

/* Back Face - Glassmorphism */
.achievement-back {
    transform: rotateY(180deg);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
    color: var(--text-primary);
    z-index: 1;
}

[data-theme="dark"] .achievement-back {
    background: rgba(20, 20, 20, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* Icon Styling */
.achievement-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-5);
    border-radius: var(--radius-full);
    transition: all var(--transition-smooth);
}

.achievement-icon.trophy {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-secondary);
}

.achievement-icon.medal {
    background: rgba(0, 0, 0, 0.03);
    color: var(--text-tertiary);
}

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

/* Typography */
.achievement-front h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--space-3);
    line-height: 1.4;
}

.achievement-preview {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    margin-bottom: var(--space-4);
    flex-grow: 1;
    display: flex;
    align-items: center;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Flip Hint */
.flip-hint {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-xs);
    color: var(--accent-cyan);
    font-weight: 500;
    margin-top: auto;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.achievement-flip-card:hover .flip-hint {
    opacity: 1;
}

.flip-hint svg {
    width: 14px;
    height: 14px;
}

/* Back Face Content */
.back-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 100%;
}

.achievement-back h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-3);
    color: var(--text-primary);
}

.achievement-badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: var(--bg-primary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 700;
    margin-bottom: var(--space-4);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.achievement-detail {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.7;
    margin-bottom: var(--space-4);
}

/* Meta Information */
.achievement-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: var(--space-4);
    border-top: 1px solid var(--glass-border);
    gap: var(--space-3);
    flex-wrap: wrap;
}

.achievement-date {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.achievement-category {
    padding: var(--space-1) var(--space-3);
    background: rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
}

.flip-hint-back {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-xs);
    color: var(--accent-cyan);
    font-weight: 500;
    margin-top: var(--space-4);
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.achievement-flip-card:hover .flip-hint-back {
    opacity: 1;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }
}

@media (max-width: 640px) {
    .achievements-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .achievement-flip-container {
        height: 460px;
    }

    .achievement-front,
    .achievement-back {
        padding: var(--space-8);
    }

    .achievement-front h3 {
        font-size: var(--font-size-lg);
    }

    .achievement-back h3 {
        font-size: var(--font-size-lg);
    }

    .achievement-detail {
        font-size: var(--font-size-sm);
        line-height: 1.6;
    }

    .achievement-icon {
        width: 60px;
        height: 60px;
        margin-bottom: var(--space-4);
    }
}


/* ==========================================
   CONTACT SECTION
   ========================================== */
.contact {
    background: var(--bg-secondary);
}

.contact-intro {
    text-align: center;
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 900px;
    margin: -var(--space-8) auto var(--space-12);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-6);
    max-width: 1000px;
    margin: 0 auto;
}

.contact-card {
    padding: var(--space-8);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
}

.contact-card svg {
    color: var(--accent-cyan);
}

.contact-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.contact-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    word-break: break-word;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    padding: var(--space-8) 0;
    text-align: center;
    border-top: 1px solid var(--glass-border);
    background: var(--bg-primary);
}

.footer p {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */
@media (max-width: 768px) {
    .nav-container {
        display: flex;
        /* Reset from Grid to Flex for mobile header bar */
        justify-content: space-between;
        padding: 0 var(--space-4);
    }

    .nav-menu {
        display: flex;
        /* It was contents on desktop, back to flex for mobile */
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--bg-primary);
        opacity: 0.98;
        backdrop-filter: blur(25px) saturate(180%);
        -webkit-backdrop-filter: blur(25px) saturate(180%);
        flex-direction: column;
        padding: var(--space-20) var(--space-8);
        gap: var(--space-6);
        transition: right var(--transition-smooth);
        border-left: 1px solid var(--glass-border);
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.5);
        z-index: 1000;
    }

    .nav-links {
        display: flex;
        flex-direction: column;
        gap: var(--space-6);
        align-items: center;
        width: 100%;
    }

    .nav-actions {
        display: flex;
        flex-direction: column;
        gap: var(--space-6);
        align-items: center;
        width: 100%;
        margin-top: var(--space-4);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu.active::before {
        content: '';
        position: fixed;
        top: 0;
        left: -100vw;
        width: 100vw;
        height: 100vh;
        background: rgba(0, 0, 0, 0.6);
        z-index: -1;
    }

    .nav-link {
        font-size: var(--font-size-lg);
        padding: var(--space-3) 0;
    }

    .nav-actions .theme-toggle {
        display: none;
    }

    .mobile-controls {
        display: flex;
        align-items: center;
        gap: var(--space-4);
        margin-left: auto;
    }

    .theme-toggle.mobile-only {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: var(--radius-full);
        background: transparent;
        border: 1px solid var(--glass-border);
        color: var(--text-primary);
        cursor: pointer;
    }

    .nav-toggle {
        display: flex !important;
        flex-direction: column;
        justify-content: space-between;
        width: 30px;
        height: 21px;
        z-index: 2000;
        cursor: pointer;
        background: transparent;
        border: none;
        padding: 0;
    }

    .nav-toggle span {
        width: 100%;
        height: 3px;
        background-color: #000000;
        transition: all var(--transition-base);
        border-radius: 3px;
    }

    [data-theme="dark"] .nav-toggle span {
        background-color: #ffffff;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero-links {
        flex-direction: column;
        align-items: center;
    }

    .hero-btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .about-stats {
        gap: var(--space-8);
    }

    .timeline::before {
        left: 10px;
    }

    .timeline-item {
        padding-left: 40px;
    }

    .timeline-marker {
        left: 2px;
    }

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

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

    .experience-meta {
        align-items: flex-start;
        text-align: left;
    }
}

@media (max-width: 480px) {
    .section {
        padding: var(--space-16) 0;
    }

    .container {
        padding: 0 var(--space-4);
    }

    .hero-scroll {
        display: none;
    }

    .stat-number {
        font-size: var(--font-size-3xl);
    }

    .hero-social {
        margin-bottom: var(--space-8);
    }

    .hero-social a {
        width: 44px;
        height: 44px;
    }

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

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

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

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

    .timeline-content {
        padding: var(--space-4);
    }

    .experience-card,
    .project-card,
    .achievement-card,
    .contact-card {
        padding: var(--space-6);
    }

    .modal-content {
        width: 95%;
        padding: var(--space-6);
    }
}

/* ==========================================
   CONTACT MODAL
   ========================================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    position: relative;
    max-width: 480px;
    width: 90%;
    padding: var(--space-10);
    text-align: center;
    transform: translateY(20px) scale(0.95);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal-content {
    transform: translateY(0) scale(1);
}

.modal-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.05);
}

.modal-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--space-3);
    color: var(--text-primary);
}

.modal-intro {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
}

.modal-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.modal-link {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-6);
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

.modal-link:hover {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.15);
    transform: translateX(4px);
}

.modal-link svg {
    flex-shrink: 0;
    color: var(--text-secondary);
}