/* ============================================
   MAD - Maintenance Actions Dataset
   Style Sheet
   ============================================ */

/* CSS Variables */
:root {
    /* Colors - Industrial Theme */
    --primary: #e94560;
    --primary-dark: #c73e54;
    --secondary: #0f3460;
    --secondary-light: #16213e;
    --dark: #1a1a2e;
    --darker: #0f0f1a;
    --light: #f5f5f7;
    --gray: #6c757d;
    --gray-light: #e9ecef;
    --accent: #ffc107;
    
    /* Typography */
    --font-display: 'Bebas Neue', sans-serif;
    --font-body: 'Source Sans 3', sans-serif;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-width: 1200px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.2);
    --shadow-glow: 0 0 30px rgba(233, 69, 96, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--dark);
    background: var(--light);
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: 0.02em;
}

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

a:hover {
    color: var(--primary-dark);
}

/* Container */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: transparent;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    padding: 12px 0;
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
    font-family: var(--font-display);
    font-size: 2rem;
    text-decoration: none;
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    letter-spacing: 0.1em;
}

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

.nav-link {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 10px 20px;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary);
    background: rgba(255, 255, 255, 0.1);
}

.nav-link.active {
    color: var(--primary);
    background: transparent;
    font-weight: 700;
}

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

.nav-toggle .bar {
    width: 25px;
    height: 3px;
    background: white;
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-video-wall {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460);
}

#hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    object-fit: cover;
    transition: opacity 1s ease-in-out;
    opacity: 1;
}

#hero-video.fade-out {
    opacity: 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(26, 26, 46, 0.6) 0%,
        rgba(15, 52, 96, 0.5) 50%,
        rgba(26, 26, 46, 0.6) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 24px;
    max-width: 900px;
}

.hero-title {
    margin-bottom: 24px;
}

.title-main {
    display: block;
    font-size: clamp(3rem, 12vw, 8rem);
    color: white;
    letter-spacing: 0.15em;
    text-shadow: 2px 2px 20px rgba(0, 0, 0, 0.3);
}

.title-sub {
    display: block;
    font-size: clamp(1.5rem, 5vw, 3rem);
    color: var(--primary);
    letter-spacing: 0.3em;
}

.hero-tagline {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
    font-weight: 300;
}

.hero-badges {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.badge {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    backdrop-filter: blur(5px);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--primary);
    color: white;
    padding: 16px 40px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-glow);
}

.cta-button:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(233, 69, 96, 0.4);
    color: white;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    animation: bounce 2s ease infinite;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid rgba(255, 255, 255, 0.6);
    border-bottom: 2px solid rgba(255, 255, 255, 0.6);
    transform: rotate(45deg);
    margin: 10px auto 0;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ============================================
   Section Styling
   ============================================ */
.section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header.left {
    text-align: left;
}

.section-title {
    font-size: 3rem;
    color: var(--dark);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.title-accent {
    width: 60px;
    height: 4px;
    background: var(--primary);
    margin: 16px auto 0;
    border-radius: 2px;
}

.section-header.left .title-accent {
    margin-left: 0;
}

/* ============================================
   News Section
   ============================================ */
.news-section {
    background: white;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.news-card {
    background: var(--light);
    border-radius: 12px;
    padding: 30px;
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-light);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.news-card.featured {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
    color: white;
    border: none;
}

.news-card.featured .news-date {
    color: var(--primary);
}

.news-date {
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary);
    margin-bottom: 12px;
}

.news-content h3 {
    font-size: 1.4rem;
    margin-bottom: 8px;
}

.news-content p {
    font-size: 0.95rem;
    opacity: 0.9;
}

/* ============================================
   About Section
   ============================================ */
.about-section {
    background: linear-gradient(180deg, white 0%, var(--light) 100%);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-description {
    font-size: 1.1rem;
    color: var(--gray);
    margin-bottom: 20px;
}

.about-description strong {
    color: var(--dark);
}

.stats-header {
    font-size: 1.5rem;
    color: var(--dark);
    margin-bottom: 24px;
}

.stat-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.stat-card {
    background: white;
    border-radius: 16px;
    padding: 30px 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-light);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 12px;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--dark);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 8px;
}

/* ============================================
   Characteristics Section
   ============================================ */
.characteristics-section {
    background: var(--dark);
    color: white;
}

.characteristics-section .section-title {
    color: white;
}

.characteristics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.char-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    transition: all var(--transition-normal);
}

.char-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.char-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
}

.char-card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    letter-spacing: 0.05em;
}

.char-card p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
}

/* ============================================
   Stats Section
   ============================================ */
.stats-section {
    background: white;
}

.stats-figures {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.figure-placeholder {
    background: var(--light);
    border: 2px dashed var(--gray-light);
    border-radius: 16px;
    padding: 60px 30px;
    text-align: center;
    transition: all var(--transition-normal);
}

.figure-placeholder:hover {
    border-color: var(--primary);
}

.figure-icon {
    font-size: 3rem;
    color: var(--gray);
    margin-bottom: 20px;
}

.figure-placeholder p {
    font-size: 1.1rem;
    color: var(--dark);
    font-weight: 600;
}

.figure-note {
    font-size: 0.85rem;
    color: var(--gray);
    display: block;
    margin-top: 8px;
}

/* ============================================
   Explore Section
   ============================================ */
.explore-section {
    background: white;
}

.explore-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
    color: var(--gray);
}

.explore-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    align-items: flex-end;
    margin-bottom: 40px;
    padding: 24px;
    background: var(--light);
    border-radius: 12px;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--dark);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.filter-select {
    padding: 12px 16px;
    border: 2px solid var(--gray-light);
    border-radius: 8px;
    font-size: 0.95rem;
    min-width: 160px;
    background: white;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.filter-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.1);
}

.explore-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.explore-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.explore-viewer {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 24px;
    margin-bottom: 40px;
}

.viewer-main {
    background: var(--dark);
    border-radius: 12px;
    overflow: hidden;
}

.image-container {
    position: relative;
    width: 100%;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--darker);
}

.placeholder-message {
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
}

.placeholder-message i {
    font-size: 4rem;
    margin-bottom: 16px;
    opacity: 0.3;
}

.placeholder-message p {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.placeholder-message .coming-soon {
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

#annotation-canvas {
    position: absolute;
    pointer-events: none;
    /* Position will be set by JS to match image */
}

#explore-image {
    max-width: 100%;
    display: block;
    max-height: 500px;
    object-fit: contain;
}

.viewer-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 16px;
    background: rgba(0, 0, 0, 0.3);
}

.nav-btn {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-btn:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: scale(1.1);
}

.nav-btn:disabled {
    background: var(--gray);
    cursor: not-allowed;
    opacity: 0.5;
}

#image-counter {
    color: white;
    font-weight: 600;
}

.viewer-sidebar {
    background: var(--light);
    border-radius: 12px;
    padding: 20px;
}

.viewer-sidebar h4 {
    font-size: 1rem;
    color: var(--dark);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--gray-light);
}

.annotation-list {
    margin-bottom: 24px;
    max-height: 200px;
    overflow-y: auto;
}

.no-annotations {
    color: var(--gray);
    font-style: italic;
    font-size: 0.9rem;
}

.annotation-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: white;
    border-radius: 6px;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.annotation-color {
    width: 16px;
    height: 16px;
    border-radius: 4px;
}

.metadata-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.meta-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
}

.meta-label {
    color: var(--gray);
}

.meta-value {
    font-weight: 600;
    color: var(--dark);
}

.explore-gallery h4 {
    font-size: 1.2rem;
    color: var(--dark);
    margin-bottom: 20px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 12px;
}

.gallery-item {
    aspect-ratio: 16/9;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.gallery-item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-item.placeholder {
    background: var(--light);
    border: 2px dashed var(--gray-light);
}

.gallery-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray);
    font-size: 1.5rem;
    opacity: 0.3;
}

@media (max-width: 992px) {
    .explore-viewer {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .explore-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-select {
        width: 100%;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   Download Section
   ============================================ */
.download-section {
    background: linear-gradient(180deg, var(--light) 0%, white 100%);
}

.download-content {
    max-width: 1000px;
    margin: 0 auto;
}

.download-notice {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: rgba(233, 69, 96, 0.1);
    border-left: 4px solid var(--primary);
    padding: 20px 24px;
    border-radius: 0 8px 8px 0;
    margin-bottom: 40px;
}

.download-notice i {
    color: var(--primary);
    font-size: 1.3rem;
    margin-top: 2px;
}

.download-notice p {
    color: var(--dark);
    margin: 0;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 50px;
}

.download-card {
    background: white;
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-light);
    transition: all var(--transition-normal);
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.download-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: white;
}

.download-card h3 {
    font-size: 1.4rem;
    color: var(--dark);
    margin-bottom: 8px;
}

.download-card p {
    color: var(--gray);
    margin-bottom: 16px;
}

.download-meta {
    font-size: 0.85rem;
    color: var(--gray);
    margin-bottom: 20px;
}

.download-meta i {
    margin-right: 6px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: white;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.download-btn:hover {
    background: var(--primary-dark);
    color: white;
    transform: scale(1.05);
}

.annotations-section {
    text-align: center;
    padding: 40px;
    background: var(--light);
    border-radius: 16px;
    margin-bottom: 40px;
}

.annotations-section h3 {
    font-size: 1.5rem;
    color: var(--dark);
    margin-bottom: 12px;
}

.repo-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--dark);
    color: white;
    padding: 14px 32px;
    border-radius: 30px;
    font-weight: 600;
    margin-top: 16px;
    transition: all var(--transition-fast);
}

.repo-link:hover {
    background: var(--secondary);
    color: white;
}

.citation-section {
    background: var(--dark);
    border-radius: 16px;
    padding: 40px;
    color: white;
}

.citation-section h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.citation-section > p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
}

.citation-box {
    position: relative;
    background: var(--darker);
    border-radius: 8px;
    padding: 24px;
    overflow-x: auto;
}

.citation-box pre {
    margin: 0;
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.9);
}

.copy-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--primary);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition-fast);
}

.copy-btn:hover {
    background: var(--primary-dark);
}

/* ============================================
   Benchmark Section
   ============================================ */
.benchmark-section {
    background: white;
}

.benchmark-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

.benchmark-intro p {
    font-size: 1.1rem;
    color: var(--gray);
}

.benchmark-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.benchmark-card {
    background: var(--light);
    border-radius: 16px;
    overflow: hidden;
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-light);
}

.benchmark-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.benchmark-header {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
    padding: 24px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.benchmark-header h3 {
    color: white;
    font-size: 1.3rem;
}

.task-badge {
    background: var(--primary);
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.benchmark-body {
    padding: 30px;
}

.benchmark-body p {
    font-size: 0.95rem;
    color: var(--gray);
    margin-bottom: 12px;
}

.benchmark-body strong {
    color: var(--dark);
}

.benchmark-links {
    padding: 0 30px 30px;
    display: flex;
    gap: 12px;
}

.bench-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.bench-link:hover {
    background: var(--primary-dark);
    color: white;
}

/* ============================================
   Team Section
   ============================================ */
.team-section {
    background: linear-gradient(180deg, var(--light) 0%, white 100%);
}

.team-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

.team-intro p {
    font-size: 1.1rem;
    color: var(--gray);
}

.team-intro a {
    color: var(--primary);
    font-weight: 600;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.team-member {
    background: white;
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-light);
    transition: all var(--transition-normal);
}

.team-member:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.team-member.pi {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
    color: white;
    border: none;
}

.team-member.pi .member-role,
.team-member.pi .member-affiliation {
    color: rgba(255, 255, 255, 0.8);
}

.member-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 20px;
    border: 4px solid var(--gray-light);
}

.team-member.pi .member-photo {
    border-color: rgba(255, 255, 255, 0.3);
    width: 180px;
    height: 180px;
}

.member-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.member-info h3 {
    font-size: 1.3rem;
    color: var(--dark);
    margin-bottom: 8px;
}

.team-member.pi .member-info h3 {
    color: white;
}

.member-role {
    display: block;
    font-size: 0.9rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 4px;
}

.member-affiliation {
    display: block;
    font-size: 0.85rem;
    color: var(--gray);
}

.member-links {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 16px;
}

.member-links a {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all var(--transition-fast);
}

.member-links a:hover {
    background: var(--primary);
}

.funding-section {
    text-align: center;
    padding: 40px;
    background: white;
    border-radius: 16px;
    border: 1px solid var(--gray-light);
}

.funding-section h3 {
    font-size: 1.5rem;
    color: var(--dark);
    margin-bottom: 16px;
}

.funding-section > p {
    color: var(--gray);
    margin-bottom: 16px;
}

.funding-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.funding-list li {
    background: var(--light);
    padding: 12px 24px;
    border-radius: 30px;
    font-size: 0.9rem;
    color: var(--dark);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--dark);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    align-items: start;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-brand .logo-icon {
    font-size: 2rem;
}

.footer-brand .logo-text {
    font-family: var(--font-display);
    font-size: 2rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    gap: 10px;
    transition: color var(--transition-fast);
}

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

.footer-license {
    text-align: right;
}

.footer-license img {
    margin-bottom: 8px;
}

.footer-license p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .team-member.pi {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--dark);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        transform: translateY(-150%);
        opacity: 0;
        transition: all var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .nav-link {
        display: block;
        padding: 16px 20px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 6px);
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -6px);
    }
    
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .hero-badges {
        gap: 8px;
    }
    
    .badge {
        font-size: 0.75rem;
        padding: 6px 14px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .stat-cards {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-content {
        text-align: center;
    }
    
    .footer-license {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .stat-cards {
        grid-template-columns: 1fr;
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .title-main {
        letter-spacing: 0.05em;
    }
    
    .cta-button {
        padding: 14px 30px;
        font-size: 0.9rem;
    }
}