/* ===================================
   Sub-Geostationary Landing Page Styles
   =================================== */

:root {
    --primary-color: #0ea5e9;
    --secondary-color: #8b5cf6;
    --accent-color: #f59e0b;
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --text-light: #f1f5f9;
    --text-gray: #94a3b8;
    --card-bg: #1e293b;
    --card-border: #334155;
    --success-color: #10b981;
}

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

/* Performance optimizations */
*,
*::before,
*::after {
    backface-visibility: hidden;
    -webkit-font-smoothing: antialiased;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-darker);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===================================
   Navigation
   =================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(51, 65, 85, 0.5);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-light);
}

.logo-image {
    height: 40px;
    width: 40px;
    /* Optimize image loading and display */
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    object-fit: contain;
}

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

.nav-links a {
    color: var(--text-gray);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

/* ===================================
   Hero Section
   =================================== */

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 2rem;
    position: relative;
    background: radial-gradient(ellipse at bottom, #1e293b 0%, #020617 100%);
}

.hero-content {
    max-width: 900px;
    z-index: 1;
}

.hero-logo {
    margin-bottom: 2rem;
    animation: fadeInUp 0.5s ease-out;
}

.hero-logo-image {
    width: 120px;
    height: 120px;
    object-fit: contain;
    filter: drop-shadow(0 10px 30px rgba(14, 165, 233, 0.3));
    transition: all 0.3s ease;
}

.hero-logo-image:hover {
    filter: drop-shadow(0 15px 40px rgba(14, 165, 233, 0.5));
    transform: scale(1.05);
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.title-line {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.6s ease-out;
}

.title-subtitle {
    font-size: clamp(1.25rem, 3vw, 2rem);
    color: var(--text-gray);
    font-weight: 400;
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-gray);
    max-width: 700px;
    margin: 0 auto 3rem;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.btn {
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    display: inline-block;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 10px 30px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(14, 165, 233, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--text-light);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-gray);
    font-size: 0.875rem;
    animation: fadeIn 1s ease-out 0.4s both;
}

.scroll-arrow {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(10px); }
    60% { transform: translateY(5px); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ===================================
   Section Styles
   =================================== */

.section {
    padding: 6rem 2rem;
    position: relative;
    z-index: 1;
}

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

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: 4rem;
    background: linear-gradient(135deg, var(--text-light), var(--text-gray));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===================================
   About Section
   =================================== */

.about-section {
    background: linear-gradient(180deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.about-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    transition: all 0.3s ease;
}

.about-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--card-border);
    transition: all 0.3s ease;
    text-align: center;
    cursor: pointer;
    will-change: transform, opacity;
}

.about-card-link:hover .about-card,
.about-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(14, 165, 233, 0.2);
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.about-card p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* ===================================
   Features Section
   =================================== */

.features-section {
    background: var(--bg-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    transition: all 0.3s ease;
}

.feature-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--card-border);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    height: 100%;
    will-change: transform, opacity;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card-link:hover .feature-card::before,
.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card-link:hover .feature-card,
.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(14, 165, 233, 0.15);
}

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

.feature-card h3 {
    font-size: 1.5rem;
    color: var(--text-light);
}

.feature-card p {
    color: var(--text-gray);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.feature-link-text {
    color: var(--primary-color);
    font-weight: 600;
    transition: all 0.3s ease;
    margin: 1rem 0;
}

.feature-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    border-bottom: 1px solid transparent;
}

.feature-link:hover {
    gap: 1rem;
    border-bottom-color: var(--primary-color);
}

/* Inline feature links within paragraphs */
.feature-card p .feature-link {
    display: inline;
    border-bottom: 1px dotted var(--primary-color);
}

.feature-card p .feature-link:hover {
    border-bottom-style: solid;
    gap: 0.5rem;
}

.feature-status {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.feature-status.coming-soon {
    background: rgba(245, 158, 11, 0.2);
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
}

.feature-status.active {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

/* ===================================
   Mission Section
   =================================== */

.mission-section {
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
}

.mission-content {
    max-width: 800px;
    margin: 0 auto;
}

.mission-quote {
    font-size: 1.5rem;
    font-style: italic;
    color: var(--text-light);
    border-left: 4px solid var(--primary-color);
    padding-left: 2rem;
    margin-bottom: 3rem;
    line-height: 1.8;
}

.mission-goals h3 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--text-light);
}

.mission-goals ul {
    list-style: none;
}

.mission-goals li {
    color: var(--text-gray);
    padding: 1rem 0;
    padding-left: 2rem;
    position: relative;
    border-bottom: 1px solid var(--card-border);
    line-height: 1.8;
}

.mission-goals li:last-child {
    border-bottom: none;
}

.mission-goals li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* ===================================
   Contact Section
   =================================== */

.contact-section {
    background: var(--bg-dark);
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-content p {
    color: var(--text-gray);
    font-size: 1.125rem;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.contact-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 2rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    color: var(--text-light);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.contact-link:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(14, 165, 233, 0.2);
}

/* ===================================
   Footer
   =================================== */

.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--card-border);
    padding: 4rem 2rem 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    color: var(--text-light);
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

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

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: var(--text-gray);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--card-border);
    color: var(--text-gray);
}

.footer-tagline {
    font-style: italic;
    margin-top: 0.5rem;
    color: var(--text-gray);
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
        font-size: 0.875rem;
    }
    
    .hero {
        min-height: 100vh;
        padding: 1rem;
        padding-top: 8rem;
    }
    
    .hero-logo-image {
        width: 100px;
        height: 100px;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    .section {
        padding: 4rem 1rem;
    }
    
    .about-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .mission-quote {
        font-size: 1.25rem;
        padding-left: 1.5rem;
    }
}

@media (max-width: 480px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-links {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 0.5rem;
        width: 100%;
        text-align: center;
    }
    
    .logo {
        font-size: 1rem;
    }
    
    .logo-image {
        height: 32px;
        width: 32px;
    }
    
    .hero {
        padding-top: 9rem;
    }
    
    .hero-logo {
        display: none;
    }
    
    .hero-logo-image {
        width: 80px;
        height: 80px;
    }
}

/* ===================================
   Page Template Styles
   =================================== */

.logo-link {
    text-decoration: none;
    color: inherit;
}

.page-header {
    padding: 8rem 2rem 4rem;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    text-align: center;
    position: relative;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, rgba(14, 165, 233, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.breadcrumb {
    margin-bottom: 2rem;
    color: var(--text-gray);
    font-size: 0.875rem;
    z-index: 1;
    position: relative;
}

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

.breadcrumb a:hover {
    color: var(--secondary-color);
}

.breadcrumb-separator {
    margin: 0 0.5rem;
    opacity: 0.6;
}

.breadcrumb-current {
    color: var(--text-light);
}

.page-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    z-index: 1;
    position: relative;
}

.page-subtitle {
    font-size: 1.25rem;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
    z-index: 1;
    position: relative;
}

.main-content {
    padding: 4rem 2rem 6rem;
    min-height: 50vh;
}

/* Content Cards */
.content-card {
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--card-border);
    padding: 2rem;
    margin-bottom: 2rem;
    transition: all 0.3s ease;
}

.content-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(14, 165, 233, 0.1);
}

.content-card h3 {
    color: var(--text-light);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.content-card p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* Grid layouts for content */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.content-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Article/Post styles */
.article-preview {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

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

.article-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: var(--text-gray);
}

.article-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

.article-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

.article-title a:hover {
    color: var(--primary-color);
}

.article-excerpt {
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: color 0.3s ease;
}

.read-more:hover {
    color: var(--secondary-color);
}

/* Gallery styles */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.gallery-item {
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--card-border);
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
}

.gallery-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(14, 165, 233, 0.2);
}

.gallery-item-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(45deg, var(--bg-dark), var(--card-bg));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-gray);
    font-size: 0.875rem;
}

.gallery-item-content {
    padding: 1rem;
}

.gallery-item-title {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.gallery-item-description {
    font-size: 0.875rem;
    color: var(--text-gray);
    line-height: 1.5;
}

/* Status indicators */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-coming-soon {
    background: rgba(139, 92, 246, 0.2);
    color: var(--secondary-color);
    border: 1px solid rgba(139, 92, 246, 0.3);
}

.status-active {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

/* ===================================
   Library Page Specific Styles
   =================================== */

.library-controls {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 3rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.search-section {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.library-search {
    flex: 1;
    padding: 0.75rem 1rem;
    background: var(--bg-dark);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    color: var(--text-light);
    font-size: 1rem;
}

.library-search:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.search-btn {
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.search-btn:hover {
    background: var(--secondary-color);
}

.filter-section {
    display: flex;
    gap: 1rem;
}

.filter-select,
.sort-select {
    padding: 0.5rem 1rem;
    background: var(--bg-dark);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    color: var(--text-light);
    cursor: pointer;
}

.section-heading {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-light);
}

.featured-paper {
    position: relative;
}

.paper-header {
    margin-bottom: 1rem;
}

.paper-header h3 {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.paper-meta {
    display: flex;
    gap: 1rem;
    align-items: center;
    font-size: 0.875rem;
    color: var(--text-gray);
    margin-bottom: 1rem;
}

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

.year {
    background: var(--bg-dark);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.paper-abstract {
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.paper-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    background: rgba(14, 165, 233, 0.1);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid rgba(14, 165, 233, 0.2);
}

.paper-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.paper-link {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: color 0.3s ease;
}

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

.featured-section {
    margin-bottom: 4rem;
}

.papers-section {
    margin-bottom: 4rem;
}

.contribute-section {
    margin-top: 4rem;
}

.contribute-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

/* Active navigation link */
.nav-links a.active {
    color: var(--primary-color);
}

.nav-links a.active::after {
    width: 100%;
}

/* ===================================
   Gallery Page Specific Styles
   =================================== */

.gallery-controls {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.filter-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 0.5rem 1rem;
    background: transparent;
    color: var(--text-gray);
    border: 1px solid var(--card-border);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.875rem;
}

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

.filter-tab.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.view-options {
    display: flex;
    gap: 0.5rem;
}

.view-btn {
    padding: 0.5rem 1rem;
    background: transparent;
    color: var(--text-gray);
    border: 1px solid var(--card-border);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.view-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Featured Artwork */
.featured-artwork-section {
    margin-bottom: 4rem;
}

.artwork-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    overflow: hidden;
}

.artwork-hero-image {
    aspect-ratio: 16/9;
}

.artwork-hero-info {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.artwork-hero-info h3 {
    font-size: 1.75rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.artwork-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

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

.date,
.license {
    color: var(--text-gray);
}

.artwork-description {
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 1rem;
}

/* Gallery Items */
.gallery-grid.list-view {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.gallery-grid.list-view .gallery-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 1rem;
    align-items: start;
}

.gallery-item-image {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 8px;
    overflow: hidden;
}

.placeholder-image {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-dark), var(--card-bg));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-gray);
    text-align: center;
    padding: 1rem;
}

.placeholder-image span {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.placeholder-image p {
    font-size: 0.875rem;
    opacity: 0.7;
}

.gallery-item-title {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 0.25rem;
}

.gallery-item-artist {
    font-size: 0.875rem;
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.gallery-item-description {
    font-size: 0.875rem;
    color: var(--text-gray);
    line-height: 1.5;
    margin-bottom: 1rem;
}

.gallery-item-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    margin-top: auto;
}

.view-artwork-btn {
    padding: 0.5rem 1rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: background 0.3s ease;
}

.view-artwork-btn:hover {
    background: var(--secondary-color);
}

.download-link {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.3s ease;
}

.download-link:hover {
    color: var(--primary-color);
}

/* Submission Section */
.submission-section {
    margin-top: 4rem;
}

.submission-guidelines {
    margin: 1.5rem 0;
}

.submission-guidelines h3 {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.submission-guidelines ul {
    color: var(--text-gray);
    padding-left: 1.5rem;
    line-height: 1.6;
}

.submission-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

/* Artwork Modal */
.artwork-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    max-width: 90vw;
    max-height: 90vh;
    overflow: hidden;
    display: grid;
    grid-template-columns: 2fr 1fr;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    font-size: 1.5rem;
    z-index: 2001;
    transition: background 0.3s ease;
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.9);
}

.modal-image {
    aspect-ratio: 16/9;
}

.modal-info {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.modal-title {
    font-size: 1.5rem;
    color: var(--text-light);
}

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

.modal-description {
    color: var(--text-gray);
    line-height: 1.6;
    flex: 1;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    margin-top: auto;
}

/* ===================================
   News Page Specific Styles
   =================================== */

.newsletter-section {
    margin-bottom: 3rem;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    margin: 1rem 0;
}

.newsletter-input {
    flex: 1;
    padding: 0.75rem 1rem;
    background: var(--bg-dark);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    color: var(--text-light);
    font-size: 1rem;
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.newsletter-btn {
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s ease;
    white-space: nowrap;
}

.newsletter-btn:hover {
    background: var(--secondary-color);
}

.newsletter-note {
    font-size: 0.875rem;
    color: var(--text-gray);
    margin-top: 0.5rem;
}

/* Featured Post */
.featured-post-section {
    margin-bottom: 4rem;
}

.featured-post {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    overflow: hidden;
}

.post-header {
    padding: 2rem;
    border-bottom: 1px solid var(--card-border);
}

.post-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: var(--text-gray);
    flex-wrap: wrap;
}

.post-date {
    color: var(--primary-color);
    font-weight: 500;
}

.post-category,
.read-time {
    background: var(--bg-dark);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.post-title {
    font-size: 2rem;
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.post-excerpt {
    font-size: 1.125rem;
    color: var(--text-gray);
    line-height: 1.6;
}

.post-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    padding: 2rem;
}

.post-image-placeholder {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--bg-dark), var(--card-bg));
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-gray);
    text-align: center;
    padding: 1rem;
}

.post-text {
    color: var(--text-gray);
    line-height: 1.7;
}

.post-text p {
    margin-bottom: 1rem;
}

.post-text h3 {
    color: var(--text-light);
    margin: 1.5rem 0 1rem;
    font-size: 1.25rem;
}

.post-text ul {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.post-text li {
    margin-bottom: 0.5rem;
}

.post-footer {
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--card-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.post-actions {
    display: flex;
    gap: 1rem;
}

.share-btn,
.comment-btn {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.share-btn:hover,
.comment-btn:hover {
    color: var(--primary-color);
}

/* Recent Posts */
.recent-posts-section {
    margin-bottom: 4rem;
}

.read-time {
    font-style: italic;
}

/* Archive and Categories */
.archive-section {
    margin-bottom: 4rem;
}

.category-list,
.archive-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1rem;
}

.category-link,
.archive-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-gray);
    text-decoration: none;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(51, 65, 85, 0.3);
    transition: color 0.3s ease;
}

.category-link:hover,
.archive-link:hover {
    color: var(--primary-color);
}

.count {
    background: var(--bg-dark);
    color: var(--text-gray);
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* News Contribution */
.news-contribute-section {
    margin-top: 4rem;
}

/* ===================================
   Enhanced Responsive Design
   =================================== */

@media (max-width: 1024px) {
    .artwork-hero {
        grid-template-columns: 1fr;
    }
    
    .artwork-hero-image {
        order: -1;
    }
    
    .post-content {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        grid-template-columns: 1fr;
        max-height: 85vh;
        overflow-y: auto;
    }
}

@media (max-width: 768px) {
    .library-controls {
        padding: 1rem;
    }
    
    .search-section {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-section {
        flex-direction: column;
    }
    
    .gallery-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-tabs {
        justify-content: center;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .post-header {
        padding: 1.5rem;
    }
    
    .post-content {
        padding: 1.5rem;
    }
    
    .post-footer {
        padding: 1rem 1.5rem;
        flex-direction: column;
        align-items: stretch;
    }
    
    .gallery-grid.list-view .gallery-item {
        grid-template-columns: 1fr;
    }
    
    .paper-actions,
    .contribute-actions,
    .submission-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .paper-meta {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }
    
    .artwork-hero-info {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .filter-tabs {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        padding: 8rem 1rem 2rem;
    }
    
    .main-content {
        padding: 2rem 1rem 3rem;
    }
    
    .modal-content {
        margin: 1rem;
        max-width: calc(100vw - 2rem);
        max-height: calc(100vh - 2rem);
    }
    
    .section-heading {
        font-size: 1.5rem;
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .page-header {
        padding: 7rem 1rem 3rem;
    }
    
    .main-content {
        padding: 3rem 1rem 4rem;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .library-controls {
        padding: 1rem;
    }
    
    .search-section {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-section {
        flex-direction: column;
    }
    
    .paper-actions,
    .contribute-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .paper-meta {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }
}