/* ============================================
   AKASH GHOSH - PORTFOLIO
   ============================================ */

/* CSS Variables - Themes */
:root {
    /* Dark theme (default) */
    --bg-primary: #0A0E1A;
    --bg-secondary: #0F1422;
    --bg-tertiary: #1A2032;
    --bg-card: #131826;
    --bg-card-hover: #1A2235;
    
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    
    --border: rgba(148, 163, 184, 0.1);
    --border-hover: rgba(148, 163, 184, 0.2);
    
    --accent: #0066CC;
    --accent-light: #3B82F6;
    --accent-glow: rgba(59, 130, 246, 0.15);
    
    --highlight: #FBBF24;
    --highlight-glow: rgba(251, 191, 36, 0.15);
    
    --success: #10B981;
    --success-glow: rgba(16, 185, 129, 0.15);
    
    --coral: #F97316;
    
    /* Typography */
    --font-display: 'Space Grotesk', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    
    /* Spacing */
    --section-padding: clamp(4rem, 10vw, 8rem);
    --container-max: 1280px;
    
    /* Transitions */
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --bg-tertiary: #F1F5F9;
    --bg-card: #FFFFFF;
    --bg-card-hover: #F8FAFC;
    
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-muted: #64748B;
    
    --border: rgba(15, 23, 42, 0.08);
    --border-hover: rgba(15, 23, 42, 0.15);
    
    --accent-glow: rgba(59, 130, 246, 0.1);
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
    transition: background-color var(--transition), color var(--transition);
    cursor: none;
}

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

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

ul { list-style: none; }

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

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
}

/* Custom Cursor */
.cursor {
    width: 32px;
    height: 32px;
    border: 2px solid var(--accent-light);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.15s ease, width 0.3s ease, height 0.3s ease, border-color 0.3s ease;
    transform: translate(-50%, -50%);
    mix-blend-mode: difference;
}

.cursor-dot {
    width: 6px;
    height: 6px;
    background: var(--highlight);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
}

.cursor.hover {
    width: 60px;
    height: 60px;
    border-color: var(--highlight);
    background: rgba(251, 191, 36, 0.05);
}

@media (max-width: 768px) {
    .cursor, .cursor-dot { display: none; }
    body { cursor: auto; }
}

/* Loading Screen */
.loader {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
}

.loader-text {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: -0.05em;
}

.loader-text::after {
    content: '.';
    color: var(--accent-light);
}

.loader-bar {
    width: 200px;
    height: 2px;
    background: var(--border);
    border-radius: 2px;
    overflow: hidden;
    margin: 0 auto;
}

.loader-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-light), var(--highlight));
    animation: load 1.5s ease forwards;
}

@keyframes load {
    0% { width: 0; }
    100% { width: 100%; }
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 26, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    transition: all var(--transition);
}

[data-theme="light"] .nav {
    background: rgba(255, 255, 255, 0.85);
}

.nav.scrolled {
    padding: 0.5rem 0;
    background: rgba(10, 14, 26, 0.95);
}

[data-theme="light"] .nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 1.25rem clamp(1.5rem, 4vw, 3rem);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    display: flex;
    align-items: baseline;
    color: var(--text-primary);
    transition: transform var(--transition);
}

.nav-logo:hover { transform: translateY(-1px); }

.nav-logo-text { color: var(--text-primary); }
.nav-logo-dot { color: var(--accent-light); margin: 0 1px; font-size: 1.4rem; }
.nav-logo-text-alt { color: var(--text-secondary); }

.nav-menu {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
    padding: 0.5rem 0;
}

.nav-num {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-light);
    font-weight: 600;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-light);
    transition: width var(--transition);
}

.nav-link:hover { color: var(--text-primary); }
.nav-link:hover::after { width: 100%; }

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all var(--transition);
    border: 1px solid var(--border);
}

.theme-toggle:hover {
    background: var(--bg-card-hover);
    transform: rotate(15deg);
    border-color: var(--accent-light);
}

.theme-toggle .sun { display: none; }
.theme-toggle .moon { display: block; }

[data-theme="light"] .theme-toggle .sun { display: block; }
[data-theme="light"] .theme-toggle .moon { display: none; }

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 30px;
    height: 30px;
    align-items: center;
    justify-content: center;
}

.mobile-toggle span {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition);
}

.mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 900px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        gap: 0;
        padding: 2rem;
        transform: translateX(100%);
        transition: transform var(--transition);
        border-bottom: 1px solid var(--border);
    }
    .nav-menu.active { transform: translateX(0); }
    .nav-link { padding: 1rem 0; width: 100%; border-bottom: 1px solid var(--border); }
    .mobile-toggle { display: flex; }
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
    overflow: hidden;
}

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

#particles {
    width: 100%;
    height: 100%;
    opacity: 0.6;
}

.hero-container {
    position: relative;
    z-index: 1;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
    width: 100%;
}

@media (max-width: 900px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-family: var(--font-mono);
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s ease infinite;
    box-shadow: 0 0 10px var(--success);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 7vw, 5rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
}

.hero-title-line { display: block; }

.hero-title-line:nth-child(1) {
    font-size: 0.5em;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-family: var(--font-mono);
}

.hero-name {
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.25rem;
}

.hero-period { color: var(--highlight); -webkit-text-fill-color: var(--highlight); }

.hero-subtitle {
    font-size: 0.65em;
    color: var(--text-secondary);
    font-weight: 600;
}

.rotate-text {
    color: var(--accent-light);
    position: relative;
    display: inline-block;
    transition: opacity 0.3s ease;
}

.rotate-text::after {
    content: '|';
    color: var(--highlight);
    margin-left: 4px;
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 540px;
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-highlight {
    color: var(--text-primary);
    font-weight: 600;
    position: relative;
    background: linear-gradient(transparent 60%, var(--highlight-glow) 60%);
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-display);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    cursor: none;
    letter-spacing: -0.01em;
}

.btn-primary {
    background: var(--accent-light);
    color: white;
    border: 1px solid var(--accent-light);
}

.btn-primary:hover {
    background: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px var(--accent-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--accent-light);
    background: var(--accent-glow);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1.125rem 2.25rem;
    font-size: 1rem;
}

.hero-socials {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    transition: all var(--transition);
    background: var(--bg-tertiary);
}

.social-link:hover {
    color: var(--accent-light);
    border-color: var(--accent-light);
    transform: translateY(-3px);
    background: var(--accent-glow);
}

/* Code Window Visual */
.hero-visual { display: flex; justify-content: center; }

.code-window {
    width: 100%;
    max-width: 480px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: rotate(-2deg);
    transition: transform var(--transition);
}

.code-window:hover { transform: rotate(0) scale(1.02); }

.code-header {
    background: var(--bg-tertiary);
    padding: 0.875rem 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-bottom: 1px solid var(--border);
}

.code-dots { display: flex; gap: 6px; }

.code-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.code-dots span:nth-child(1) { background: #ff5f56; }
.code-dots span:nth-child(2) { background: #ffbd2e; }
.code-dots span:nth-child(3) { background: #27c93f; }

.code-filename {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.code-body {
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.7;
    overflow-x: auto;
}

.code-body pre { margin: 0; }
.code-comment { color: var(--text-muted); }
.code-keyword { color: #C084FC; }
.code-var { color: #60A5FA; }
.code-prop { color: #FBBF24; }
.code-string { color: #34D399; }
.code-number { color: #F472B6; }

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.mouse {
    width: 22px;
    height: 36px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 3px;
    height: 6px;
    background: var(--accent-light);
    border-radius: 2px;
    position: absolute;
    left: 50%;
    top: 6px;
    transform: translateX(-50%);
    animation: scroll-wheel 1.5s ease infinite;
}

@keyframes scroll-wheel {
    0% { opacity: 1; top: 6px; }
    100% { opacity: 0; top: 18px; }
}

/* Sections */
.section {
    padding: var(--section-padding) 0;
    position: relative;
}

.section-header {
    margin-bottom: 4rem;
    position: relative;
}

.section-num {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--accent-light);
    font-weight: 600;
    display: block;
    margin-bottom: 0.75rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.title-accent {
    color: var(--accent-light);
    position: relative;
    display: inline-block;
}

.title-accent::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 0;
    right: 0;
    height: 8px;
    background: var(--highlight-glow);
    z-index: -1;
}

.section-line {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-light), var(--highlight));
    border-radius: 2px;
}

/* Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.fade-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s ease forwards;
}

.fade-up:nth-child(1) { animation-delay: 0.1s; }
.fade-up:nth-child(2) { animation-delay: 0.2s; }
.fade-up:nth-child(3) { animation-delay: 0.3s; }
.fade-up:nth-child(4) { animation-delay: 0.4s; }
.fade-up:nth-child(5) { animation-delay: 0.5s; }

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

.fade-in {
    opacity: 0;
    animation: fadeIn 1s ease 0.6s forwards;
}

@keyframes fadeIn { to { opacity: 1; } }

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 4rem;
    align-items: start;
}

@media (max-width: 900px) {
    .about-grid { grid-template-columns: 1fr; gap: 3rem; }
}

.about-lead {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.about-text {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1.25rem;
}

.about-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

.about-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
}

.tag {
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    transition: all var(--transition);
}

.tag:hover {
    border-color: var(--accent-light);
    color: var(--accent-light);
    transform: translateY(-2px);
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.75rem 1.5rem;
    position: relative;
    transition: all var(--transition);
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-light), var(--highlight));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-light);
    background: var(--bg-card-hover);
}

.stat-card:hover::before { transform: scaleX(1); }

.stat-num {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    display: inline-block;
}

.stat-plus {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--accent-light);
    font-weight: 700;
    vertical-align: top;
    margin-left: 0.1rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    font-family: var(--font-mono);
}

/* Experience Timeline */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0.5rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-light) 0%, var(--border) 100%);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 2rem;
}

.timeline-marker {
    position: absolute;
    left: -2rem;
    top: 0.5rem;
    width: 14px;
    height: 14px;
    background: var(--bg-primary);
    border: 3px solid var(--accent-light);
    border-radius: 50%;
    transition: all var(--transition);
    z-index: 1;
}

.timeline-item:hover .timeline-marker {
    background: var(--accent-light);
    transform: scale(1.2);
    box-shadow: 0 0 0 6px var(--accent-glow);
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.75rem;
    transition: all var(--transition);
}

.timeline-content:hover {
    border-color: var(--accent-light);
    background: var(--bg-card-hover);
    transform: translateX(8px);
}

.timeline-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 0.02em;
}

.timeline-tag {
    padding: 0.2rem 0.7rem;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.timeline-tag.current {
    background: var(--success-glow);
    color: var(--success);
    border: 1px solid var(--success);
}

.timeline-role {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
}

.timeline-company {
    font-size: 1rem;
    color: var(--accent-light);
    margin-bottom: 1rem;
    font-weight: 500;
}

.timeline-desc {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.timeline-list {
    margin-bottom: 1.25rem;
}

.timeline-list li {
    color: var(--text-secondary);
    padding-left: 1.25rem;
    position: relative;
    margin-bottom: 0.4rem;
    font-size: 0.95rem;
    line-height: 1.6;
}

.timeline-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--highlight);
}

.timeline-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.timeline-stack span {
    padding: 0.3rem 0.75rem;
    background: var(--bg-tertiary);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    border: 1px solid var(--border);
}

/* Projects */
.project-filters {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.6rem 1.25rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 100px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-family: var(--font-mono);
    transition: all var(--transition);
}

.filter-btn:hover {
    border-color: var(--accent-light);
    color: var(--accent-light);
}

.filter-btn.active {
    background: var(--accent-light);
    color: white;
    border-color: var(--accent-light);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    position: relative;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--icon-color, var(--accent-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.project-card:hover::before { transform: scaleX(1); }

.project-card.hidden { display: none; }

.project-num {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

.project-icon {
    width: 56px;
    height: 56px;
    background: color-mix(in srgb, var(--icon-color, var(--accent-light)) 15%, transparent);
    color: var(--icon-color, var(--accent-light));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: all var(--transition);
}

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

.project-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
    line-height: 1.3;
}

.project-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.5rem;
}

.project-tech span {
    padding: 0.25rem 0.65rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.7rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--accent-light);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--font-mono);
    transition: all var(--transition);
    align-self: flex-start;
}

.project-link:hover {
    color: var(--highlight);
    gap: 0.6rem;
}

.projects-cta {
    margin-top: 4rem;
    text-align: center;
    padding: 3rem 2rem;
    background: var(--bg-tertiary);
    border-radius: 16px;
    border: 1px solid var(--border);
}

.projects-cta p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 5rem;
}

.skill-category {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.75rem;
    transition: all var(--transition);
}

.skill-category:hover {
    border-color: var(--accent-light);
    transform: translateY(-4px);
    background: var(--bg-card-hover);
}

.skill-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.skill-icon-wrap {
    width: 44px;
    height: 44px;
    background: var(--accent-glow);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-light);
}

.skill-num {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
}

.skill-header h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-item {
    padding: 0.4rem 0.85rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    transition: all var(--transition);
}

.skill-item:hover {
    background: var(--accent-glow);
    color: var(--accent-light);
    border-color: var(--accent-light);
    transform: translateY(-2px);
}

/* Education & Certifications */
.edu-cert-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

@media (max-width: 768px) {
    .edu-cert-grid { grid-template-columns: 1fr; }
}

.edu-block-title {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.edu-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent-light);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: all var(--transition);
}

.edu-card:hover {
    background: var(--bg-card-hover);
    transform: translateX(4px);
}

.edu-degree {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
}

.edu-school {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}

.edu-date {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.cert-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.cert-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all var(--transition);
}

.cert-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-light);
    transform: translateX(4px);
}

.cert-badge {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #4285F4, #34A853, #FBBC04, #EA4335);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-family: var(--font-display);
    flex-shrink: 0;
}

.cert-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
    margin-bottom: 0.15rem;
}

.cert-issuer {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* Contact */
.contact-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-headline {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.contact-subheadline {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 3rem;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem 1rem;
    transition: all var(--transition);
    text-align: center;
}

.contact-card:hover {
    border-color: var(--accent-light);
    background: var(--bg-card-hover);
    transform: translateY(-4px);
}

.contact-card-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    background: var(--accent-glow);
    color: var(--accent-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.contact-card:hover .contact-card-icon {
    transform: scale(1.1) rotate(-5deg);
    background: var(--accent-light);
    color: white;
}

.contact-card-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.4rem;
    font-family: var(--font-mono);
}

.contact-card-value {
    font-size: 0.875rem;
    color: var(--text-primary);
    word-break: break-word;
    font-weight: 500;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border);
    padding: 3rem 0 2rem;
    background: var(--bg-secondary);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    align-items: center;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 1.5rem;
    }
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
}

.footer-logo span { color: var(--accent-light); }

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-socials {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.footer-socials a {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.footer-socials a:hover {
    color: var(--accent-light);
    border-color: var(--accent-light);
    transform: translateY(-3px);
}

.footer-copy {
    text-align: right;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-family: var(--font-mono);
}

@media (max-width: 768px) {
    .footer-copy { text-align: center; }
}

/* Responsive Tweaks */
@media (max-width: 600px) {
    .hero-cta { flex-direction: column; align-items: stretch; }
    .hero-cta .btn { justify-content: center; }
    .about-stats { grid-template-columns: 1fr 1fr; }
    .timeline { padding-left: 1.5rem; }
    .timeline-item { padding-left: 1.5rem; }
    .timeline::before { left: 0.25rem; }
    .timeline-marker { left: -1.5rem; }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 10px;
    border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-light);
}

/* Selection */
::selection {
    background: var(--accent-light);
    color: white;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .reveal {
        opacity: 1;
        transform: none;
    }
}