/* Style sheet for Yishao Shum Portfolio Redesign */

/* Core Variables & Tokens */
:root {
    --bg-dark: #050508;
    --bg-secondary: #0a0a0f;
    --bg-card: #101016;
    
    --accent-gold: #c5a85c;
    --accent-gold-glow: rgba(197, 168, 92, 0.3);
    --accent-cyan: #00e5ff;
    --accent-cyan-glow: rgba(0, 229, 255, 0.3);
    
    --text-primary: #f5f6f9;
    --text-secondary: #a0a5b5;
    --text-muted: #5d6275;
    
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-zh: 'Noto Sans TC', var(--font-sans);
    
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-snappy: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    
    --border-color: rgba(255, 255, 255, 0.06);
    --glass-bg: rgba(7, 7, 10, 0.8);
    --glass-blur: blur(20px);
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
    line-height: 1.6;
    background-color: var(--bg-dark);
}

/* Canvas Overlay */
#ink-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    pointer-events: none;
}

/* Scroll Fade Animations */
.scroll-fade {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-fade.active {
    opacity: 1;
    transform: translateY(0);
}

/* Section Common Styles */
.section-padding {
    padding: 8rem 0;
    position: relative;
    z-index: 2;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-subtitle {
    font-family: var(--font-zh);
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 0.15em;
    color: var(--accent-gold);
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.75rem;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2.75rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

.header-line {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-gold), var(--accent-cyan));
    margin: 1.5rem auto 2rem;
}

.header-line.left-align {
    margin-left: 0;
}

.section-desc {
    max-width: 650px;
    margin: 0 auto;
    color: var(--text-secondary);
    font-size: 1.05rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.9rem 2.2rem;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-decoration: none;
    border-radius: 4px;
    transition: var(--transition-smooth);
    cursor: pointer;
}

.btn-primary {
    background-color: var(--accent-gold);
    color: #000;
    border: 1px solid var(--accent-gold);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--accent-gold);
    box-shadow: 0 0 20px var(--accent-gold-glow);
}

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

.btn-secondary:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 20px var(--accent-cyan-glow);
}

/* Header / Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    transition: var(--transition-smooth);
    border-bottom: 1px solid transparent;
}

header.scrolled {
    background-color: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 0;
}

.header-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    flex-direction: column;
    text-decoration: none;
}

.logo-zh {
    font-family: var(--font-zh);
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 0.2em;
    color: var(--text-primary);
    line-height: 1.2;
}

.logo-en {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 400;
    letter-spacing: 0.25em;
    color: var(--accent-gold);
    margin-top: 0.1rem;
}

.nav-links {
    display: flex;
    gap: 2.2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: var(--transition-snappy);
    position: relative;
    padding: 0.5rem 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--accent-gold), var(--accent-cyan));
    transition: var(--transition-snappy);
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 101;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-snappy);
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    z-index: 2;
    padding-top: 80px;
    overflow: hidden;
    background-image: url('images/xingyunliushui.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 80% 20%, rgba(20, 20, 35, 0.2) 0%, rgba(5, 5, 8, 0.5) 75%);
    z-index: -1;
}

.hero-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

/* Vertical Calligraphy Strip */
.vertical-banner {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    border-left: 1px solid rgba(197, 168, 92, 0.15);
    padding-left: 1.5rem;
    display: flex;
    align-items: center;
}

.vertical-text {
    writing-mode: vertical-rl;
    font-family: var(--font-zh);
    font-size: 1.75rem;
    font-weight: 300;
    letter-spacing: 0.4em;
    color: rgba(255, 255, 255, 0.7);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
    background: linear-gradient(180deg, var(--text-primary), var(--accent-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content {
    max-width: 650px;
}

.hero-tagline {
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--accent-cyan);
    margin-bottom: 1rem;
    text-shadow: 0 0 10px var(--accent-cyan-glow);
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
}

.title-en {
    font-family: var(--font-serif);
    color: var(--text-primary);
}

.title-zh {
    font-family: var(--font-zh);
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--accent-gold);
    margin-top: 0.5rem;
    text-shadow: 0 0 20px rgba(197, 168, 92, 0.2);
}

.hero-description {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 520px;
}

.hero-cta {
    display: flex;
}

/* Scroll Down Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.scroll-dot {
    width: 6px;
    height: 10px;
    background-color: var(--accent-gold);
    border-radius: 3px;
    animation: bounce 2s infinite;
}

.scroll-text {
    font-size: 0.7rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--text-muted);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-8px);
    }
    60% {
        transform: translateY(-4px);
    }
}

/* Exhibition / Video Section */
.exhibition-section {
    background-color: var(--bg-secondary);
}

.video-container-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
}

.video-container-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 8px;
    box-shadow: inset 0 0 100px rgba(0, 229, 255, 0.05);
    pointer-events: none;
}

.video-frame {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    border-radius: 4px;
}

.video-frame iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.25rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.location-tag {
    color: var(--accent-gold);
    font-weight: 500;
}

/* Works / Gallery Section */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.gallery-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    cursor: pointer;
    aspect-ratio: 4/5;
}

.gallery-img-wrapper {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.gallery-item:hover img {
    transform: scale(1.08);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(5, 5, 8, 0.95) 0%, rgba(5, 5, 8, 0.4) 60%, rgba(5, 5, 8, 0.1) 100%);
    opacity: 0;
    transition: var(--transition-smooth);
    display: flex;
    align-items: flex-end;
    padding: 2rem;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.overlay-content {
    transform: translateY(20px);
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.gallery-item:hover .overlay-content {
    transform: translateY(0);
}

.work-category {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: 0.5rem;
}

.work-title {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.work-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    line-height: 1.4;
}

.btn-view {
    font-size: 0.8rem;
    color: var(--accent-gold);
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-view::after {
    content: '→';
    transition: transform 0.3s ease;
}

.gallery-item:hover .btn-view::after {
    transform: translateX(5px);
}

/* Manifesto Section */
.manifesto-section {
    background-color: var(--bg-secondary);
    overflow: hidden;
}

.manifesto-content {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 5rem;
}

.manifesto-block {
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    padding-bottom: 4rem;
}

.manifesto-block:last-of-type {
    border-bottom: none;
    padding-bottom: 0;
}

.manifesto-text-en {
    font-family: var(--font-serif);
    font-size: 1.85rem;
    font-style: italic;
    color: var(--text-primary);
    line-height: 1.5;
    margin-bottom: 1.5rem;
    text-shadow: 0 0 1px rgba(255, 255, 255, 0.1);
}

.manifesto-text-zh {
    font-family: var(--font-zh);
    font-size: 1.2rem;
    font-weight: 300;
    color: var(--accent-gold);
    letter-spacing: 0.15em;
    line-height: 1.8;
}

.manifesto-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 2rem;
}

.author-line {
    width: 40px;
    height: 1px;
    background-color: var(--text-muted);
}

.author-name {
    font-family: var(--font-zh);
    font-size: 1rem;
    color: var(--text-secondary);
    letter-spacing: 0.1em;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 5rem;
    align-items: center;
}

.about-visual {
    position: relative;
    display: flex;
    justify-content: center;
}

.about-img-frame {
    width: 320px;
    height: 320px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ink-blob {
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, var(--accent-gold-glow) 0%, rgba(5, 5, 8, 0) 70%);
    filter: blur(20px);
    border-radius: 50%;
    animation: morphBlob 10s ease-in-out infinite alternate;
}

.about-avatar-placeholder {
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background-color: var(--bg-card);
    border: 1px solid rgba(197, 168, 92, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.about-avatar-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.character-glow {
    font-family: var(--font-zh);
    font-size: 5rem;
    color: var(--accent-gold);
    text-shadow: 0 0 30px var(--accent-gold-glow);
    animation: pulseGlow 4s ease-in-out infinite alternate;
}

@keyframes morphBlob {
    0% { border-radius: 42% 58% 70% 30% / 45% 45% 55% 55%; transform: scale(1); }
    100% { border-radius: 70% 30% 52% 48% / 60% 40% 60% 40%; transform: scale(1.1); }
}

@keyframes pulseGlow {
    0% { opacity: 0.6; transform: scale(0.95); }
    100% { opacity: 1; transform: scale(1.05); }
}

.about-biography {
    margin-bottom: 3rem;
}

.bio-paragraph {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.bio-zh {
    font-family: var(--font-zh);
    color: var(--text-primary);
    border-left: 2px solid var(--accent-gold);
    padding-left: 1.25rem;
    margin: 2rem 0;
    font-weight: 300;
}

.artist-credentials {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    margin-top: 2.5rem;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
}

.credential-group h3 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-gold);
    margin-bottom: 1.25rem;
    font-weight: 500;
}

.credential-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.credential-list li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    line-height: 1.5;
}

.credential-list li strong {
    color: var(--text-primary);
    font-weight: 500;
}

.credential-desc {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.bio-link {
    color: var(--text-primary);
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-snappy);
}

.bio-link:hover {
    color: var(--accent-gold);
    border-bottom-color: var(--accent-gold);
}

@media (max-width: 576px) {
    .artist-credentials {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* Contact Section */
.contact-section {
    background-color: var(--bg-secondary);
}

.contact-card {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 4rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.contact-header {
    text-align: center;
    margin-bottom: 3rem;
}

.contact-desc {
    max-width: 550px;
    margin: 0 auto;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.75rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

.form-group input, .form-group textarea {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.9rem 1.2rem;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition-snappy);
    width: 100%;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--accent-gold);
    background-color: rgba(255, 255, 255, 0.04);
    box-shadow: 0 0 15px rgba(197, 168, 92, 0.1);
}

.btn-submit {
    align-self: center;
    width: 100%;
    margin-top: 1rem;
}

/* Footer */
.main-footer {
    background-color: var(--bg-dark);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
    position: relative;
    z-index: 2;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.copyright {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.social-links {
    display: flex;
    gap: 2rem;
}

.social-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: var(--transition-snappy);
}

.social-link:hover {
    color: var(--accent-gold);
}

/* Lightbox Modal */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(5, 5, 8, 0.98);
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: transparent;
    border: none;
    font-size: 3rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-snappy);
    z-index: 1010;
}

.lightbox-close:hover {
    color: var(--accent-gold);
    transform: scale(1.1);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 1.5rem;
    padding: 1.5rem 1rem;
    cursor: pointer;
    transition: var(--transition-snappy);
    border-radius: 4px;
    z-index: 1010;
}

.lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--accent-cyan);
}

.lightbox-prev {
    left: 2rem;
}

.lightbox-next {
    right: 2rem;
}

.lightbox-content {
    max-width: 80%;
    max-height: 85%;
    display: flex;
    flex-direction: column;
    align-items: center;
    transform: scale(0.95);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.lightbox.active .lightbox-content {
    transform: scale(1);
}

.lightbox-content img {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
    border-radius: 4px;
}

.lightbox-info {
    margin-top: 1.5rem;
    text-align: center;
    max-width: 600px;
}

.lightbox-info h3 {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.lightbox-info span {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: 0.75rem;
}

.lightbox-info p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0.75rem;
}

.lightbox-info p strong {
    color: var(--accent-gold);
}

.lightbox-info p.quote-zh,
.lightbox-info p.quote-en {
    font-style: italic;
    color: var(--text-primary);
    margin-top: 0.75rem;
    border-left: 2px solid rgba(197, 168, 92, 0.4);
    padding-left: 1rem;
    text-align: left;
    display: block;
}

.lightbox-info p.quote-zh {
    font-family: var(--font-zh);
    font-size: 1rem;
    margin-top: 1rem;
}

/* Mobile & Tablet Responsiveness */
@media (max-width: 1024px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
    
    .about-visual {
        order: -1;
    }
}

@media (max-width: 768px) {
    .section-padding {
        padding: 5rem 0;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .title-zh {
        font-size: 2.2rem;
    }
    
    .vertical-banner {
        display: none; /* Hide vertical strip on small screens to save space */
    }
    
    .hero-container {
        justify-content: center;
        text-align: center;
    }
    
    .hero-content {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .hero-description {
        margin: 0 auto 2.5rem;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--bg-dark);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 3rem;
        padding-bottom: 10vh;
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition-smooth);
    }
    
    .nav-links.mobile-active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
    
    .nav-link {
        font-size: 1.2rem;
    }
    
    /* Mobile Toggle Active State */
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 1.75rem;
    }
    
    .contact-card {
        padding: 2.5rem 1.5rem;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .video-info {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}

/* Exhibition & Presentation History */
.exhibition-history {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 900px;
    margin: 4rem auto 0 auto;
    border-top: 1px solid var(--border-color);
    padding-top: 3rem;
}

.history-column h3 {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--accent-gold);
    margin-bottom: 1.5rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.history-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.history-column li {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.5;
    position: relative;
    padding-left: 1.2rem;
}

.history-column li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent-cyan);
}

@media (max-width: 768px) {
    .exhibition-history {
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-top: 3rem;
        padding-top: 2rem;
    }
}