/* ============================================
   Portfolio - Dark Minimal Style
   ============================================ */

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

:root {
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-tertiary: #1a1a1d;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --bg-glass-solid: rgba(30, 30, 35, 0.8);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    --text-primary: #f5f5f7;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    --accent: #ffffff;
    --accent-dim: rgba(255, 255, 255, 0.8);
    --glow-color: rgba(255, 255, 255, 0.03);
    --grid-color: rgba(255, 255, 255, 0.03);
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #f5f5f7;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f0f0f2;
    --bg-card: rgba(0, 0, 0, 0.03);
    --bg-card-hover: rgba(0, 0, 0, 0.06);
    --bg-glass: rgba(0, 0, 0, 0.04);
    --bg-glass-solid: rgba(255, 255, 255, 0.85);
    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.15);
    --text-primary: #1a1a1d;
    --text-secondary: #55555a;
    --text-tertiary: #88888f;
    --accent: #1a1a1d;
    --accent-dim: rgba(26, 26, 29, 0.8);
    --glow-color: rgba(0, 0, 0, 0.03);
    --grid-color: rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.12);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
    backdrop-filter: blur(0px);
}

.navbar.scrolled {
    padding: 12px 0;
    background: var(--bg-glass-solid);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 2px;
}

.logo-bracket {
    color: var(--text-tertiary);
}

.logo-text {
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--text-secondary);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-glass);
}

.nav-link.active {
    color: var(--text-primary);
    background: var(--bg-glass);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

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

/* --- Hero Section --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 24px 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.grid-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
}

.glow-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--glow-color), transparent);
    top: -200px;
    right: -100px;
}

.glow-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--glow-color), transparent);
    bottom: -100px;
    left: -100px;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

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

.hero-greeting {
    display: block;
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.hero-name {
    display: block;
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    background: linear-gradient(180deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-top: 24px;
    font-weight: 400;
}

.hero-description {
    font-size: 1rem;
    color: var(--text-tertiary);
    margin-top: 16px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-top: 40px;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    margin-top: 64px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background: var(--accent-dim);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-ghost:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background: var(--bg-glass);
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 10px 24px;
}

.btn-outline:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
}

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

/* --- Scroll Indicator --- */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-tertiary);
    font-size: 0.8rem;
}

.mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 3px;
    height: 8px;
    background: var(--text-tertiary);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-anim 2s infinite;
}

@keyframes scroll-anim {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

/* --- Section Styles --- */
.featured-section,
.tech-section,
.projects-section,
.about-section,
.timeline-section,
.education-section,
.contact-section {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-top: 12px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.section-cta {
    text-align: center;
    margin-top: 48px;
}

/* --- Page Hero (sub-pages) --- */
.page-hero {
    padding: 160px 0 80px;
    position: relative;
    text-align: center;
}

.page-hero-content {
    position: relative;
    z-index: 1;
}

.page-title {
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
}

.page-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 16px;
}

/* --- Project Cards --- */
.featured-grid,
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.project-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.card-image {
    position: relative;
    aspect-ratio: 3/4;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.card-placeholder {
    color: var(--text-tertiary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.card-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.card-link {
    padding: 10px 24px;
    border: 1px solid var(--border-hover);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: var(--transition);
}

.card-link:hover {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.card-content {
    padding: 24px;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 4px 10px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    color: var(--text-tertiary);
}

.card-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.card-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.card-links {
    display: flex;
    gap: 16px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.card-action {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.card-action:hover {
    color: var(--text-primary);
}

/* --- Filter Bar --- */
.filter-bar {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    border: 1px solid var(--border-color);
    border-radius: 100px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
}

/* --- Tech Grid --- */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.tech-category {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}

.tech-category:hover {
    border-color: var(--border-hover);
}

.tech-category-title {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
}

.tech-items {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tech-item {
    padding: 10px 16px;
    background: var(--bg-glass);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.tech-item:hover {
    background: var(--bg-card-hover);
}

.tech-name {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* --- About Section --- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 64px;
    align-items: start;
}

.image-frame {
    aspect-ratio: 3/4;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.image-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

.about-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.info-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-bottom: 4px;
}

.info-value {
    font-weight: 500;
    font-size: 0.95rem;
}

/* --- Timeline --- */
.timeline {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    padding-left: 32px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-bottom: 48px;
}

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

.timeline-marker {
    position: absolute;
    left: -28px;
    top: 6px;
    width: 12px;
    height: 12px;
    background: var(--bg-primary);
    border: 2px solid var(--text-tertiary);
    border-radius: 50%;
}

.timeline-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 4px;
}

.timeline-title {
    font-size: 1.1rem;
    font-weight: 600;
}

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

.timeline-company {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    margin-bottom: 8px;
}

.timeline-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* --- Education --- */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 700px;
    margin: 0 auto;
}

.education-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
}

.edu-icon {
    color: var(--text-tertiary);
    margin-bottom: 16px;
}

.edu-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.edu-school {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.edu-year {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-top: 8px;
}

/* --- Contact Section --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.contact-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.contact-desc {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 32px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 16px;
}

.method-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    flex-shrink: 0;
}

.method-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.method-value {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.method-value:hover {
    color: var(--text-primary);
}

.social-links {
    display: flex;
    gap: 12px;
}

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

.social-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

/* --- Contact Form --- */
.contact-form-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 0.95rem;
    transition: var(--transition);
    outline: none;
}

.form-input::placeholder {
    color: var(--text-tertiary);
}

.form-input:focus {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

/* --- Footer --- */
.footer {
    padding: 48px 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

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

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-social {
    font-size: 0.9rem;
    color: var(--text-tertiary);
}

.footer-social:hover {
    color: var(--text-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

/* --- Project Showcase (Gallery) --- */
.project-showcase {
    margin-bottom: 96px;
    padding-bottom: 96px;
    border-bottom: 1px solid var(--border-color);
}

.project-showcase:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.showcase-header {
    margin-bottom: 32px;
}

.showcase-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.showcase-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 600px;
    margin-bottom: 16px;
}

.gallery-grid {
    display: flex;
    gap: 12px;
    overflow: hidden;
    position: relative;
    transition: transform 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.gallery-grid.gallery-3 {
    /* No special treatment needed */
}

.gallery-item {
    position: relative;
    aspect-ratio: 3/4;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
    flex: 0 0 calc(25% - 9px);
    min-width: 0;
}

.gallery-item:hover {
    border-color: var(--border-hover);
    transform: scale(1.02);
    z-index: 2;
    box-shadow: var(--shadow-lg);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

/* Carousel Wrapper */
.showcase-gallery {
    position: relative;
    overflow: hidden;
}

.gallery-track {
    display: flex;
    gap: 12px;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
}

.gallery-track .gallery-item {
    flex: 0 0 calc(25% - 9px);
}

/* Carousel Navigation Arrows */
.gallery-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 5;
    opacity: 0;
}

.showcase-gallery:hover .gallery-nav {
    opacity: 1;
}

.gallery-nav:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    transform: translateY(-50%) scale(1.1);
}

.gallery-nav.disabled {
    opacity: 0.2 !important;
    pointer-events: none;
}

.gallery-nav-prev {
    left: -8px;
}

.gallery-nav-next {
    right: -8px;
}

/* Carousel Dots */
.gallery-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

.gallery-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.gallery-dot.active {
    background: var(--text-primary);
    width: 24px;
    border-radius: 3px;
}

.gallery-dot:hover:not(.active) {
    background: var(--text-tertiary);
}

/* Image Lightbox */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0, 0, 0, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    padding: 40px;
}

.lightbox.active {
    opacity: 1;
    pointer-events: all;
}

.lightbox img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.lightbox-close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.lightbox-close:hover {
    background: var(--bg-card-hover);
}

/* Card image with real images */
.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.project-card:hover .card-image img {
    transform: scale(1.05);
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--bg-primary);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 16px;
        transform: translateX(100%);
        transition: var(--transition);
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

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

    .hero-stats {
        gap: 20px;
    }

    .stat-number {
        font-size: 1.4rem;
    }

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

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

    .gallery-track .gallery-item {
        flex: 0 0 calc(50% - 6px);
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .footer-content {
        flex-direction: column;
        gap: 16px;
    }

    .filter-bar {
        gap: 6px;
    }

    .filter-btn {
        padding: 6px 14px;
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .hero-name {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .contact-form-wrapper {
        padding: 24px;
    }
}

/* --- Theme Toggle Button --- */
.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    margin-left: 8px;
    font-size: 1.1rem;
}

.theme-toggle:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    transform: scale(1.1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}