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

body {
    font-family: 'Georgia', serif;
    background: linear-gradient(135deg, #1a1a1a 0%, #2c2c2c 100%);
    color: #e8e8e8;
    line-height: 1.6;
    min-height: 100vh;
}

.header {
    background: rgba(0, 0, 0, 0.9);
    padding: 2rem 0;
    text-align: center;
    border-bottom: 3px solid #d4af37;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent, rgba(212, 175, 55, 0.1), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.museum-title {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    position: relative;
    z-index: 2;
}

.museum-subtitle {
    font-size: 1.2rem;
    color: #d4af37;
    font-style: italic;
    position: relative;
    z-index: 2;
}

.navigation {
    background: rgba(20, 20, 20, 0.95);
    padding: 1rem 0;
    text-align: center;
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-buttons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.nav-btn {
    background: linear-gradient(135deg, #8b4513, #a0522d);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 2px solid transparent;
}

.nav-btn:hover {
    background: linear-gradient(135deg, #a0522d, #cd853f);
    transform: translateY(-2px);
    border-color: #d4af37;
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.nav-btn.active {
    background: linear-gradient(135deg, #d4af37, #f4d03f);
    color: #1a1a1a;
    border-color: #fff;
}

.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.section {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.section.active {
    display: block;
}

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

.intro-section {
    text-align: center;
    padding: 3rem 0;
}

.intro-text {
    font-size: 1.3rem;
    max-width: 800px;
    margin: 0 auto 2rem;
    line-height: 1.8;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.stat-card {
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.3), rgba(160, 82, 45, 0.3));
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    border: 2px solid rgba(212, 175, 55, 0.3);
    backdrop-filter: blur(10px);
}

.stat-number {
    font-size: 3rem;
    font-weight: bold;
    color: #d4af37;
    display: block;
}

.exhibit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.exhibit-card {
    background: linear-gradient(135deg, rgba(20, 20, 20, 0.9), rgba(40, 40, 40, 0.9));
    border-radius: 15px;
    overflow: hidden;
    border: 2px solid rgba(212, 175, 55, 0.3);
    transition: all 0.3s ease;
    cursor: pointer;
    backdrop-filter: blur(10px);
}

.exhibit-card:hover {
    transform: translateY(-5px);
    border-color: #d4af37;
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.2);
}

.exhibit-image {
    width: 100%;
    height: 250px;
    background: linear-gradient(45deg, #8b4513, #a0522d);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.7);
    position: relative;
    overflow: hidden;
}

.exhibit-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent, rgba(212, 175, 55, 0.1), transparent);
    animation: shimmer 4s infinite;
}

.exhibit-content {
    padding: 1.5rem;
}

.exhibit-title {
    font-size: 1.4rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    color: #d4af37;
}

.exhibit-origin {
    color: #a0a0a0;
    margin-bottom: 1rem;
    font-style: italic;
}

.exhibit-status {
    display: inline-block;
    background: #dc3545;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.artifact-detail {
    background: linear-gradient(135deg, rgba(20, 20, 20, 0.95), rgba(40, 40, 40, 0.95));
    border-radius: 15px;
    padding: 2rem;
    margin: 2rem 0;
    border: 2px solid rgba(212, 175, 55, 0.3);
    backdrop-filter: blur(10px);
}

.artifact-header {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2rem;
    margin-bottom: 2rem;
}

.artifact-info h2 {
    color: #d4af37;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.artifact-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

.meta-item {
    background: rgba(139, 69, 19, 0.2);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid #d4af37;
}

.meta-label {
    font-weight: bold;
    color: #d4af37;
    display: block;
    margin-bottom: 0.5rem;
}

.back-btn {
    background: linear-gradient(135deg, #6c757d, #868e96);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    margin-bottom: 2rem;
    transition: all 0.3s ease;
}

.back-btn:hover {
    background: linear-gradient(135deg, #868e96, #adb5bd);
    transform: translateY(-2px);
}

.repatriation-status {
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.2), rgba(34, 139, 59, 0.2));
    border: 2px solid #28a745;
    border-radius: 10px;
    padding: 1.5rem;
    margin: 2rem 0;
}

.repatriation-status.stolen {
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.2), rgba(189, 46, 60, 0.2));
    border-color: #dc3545;
}

.filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: transparent;
    color: #d4af37;
    border: 2px solid #d4af37;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background: #d4af37;
    color: #1a1a1a;
}

@media (max-width: 768px) {
    .museum-title {
        font-size: 2.5rem;
    }
    
    .nav-buttons {
        gap: 1rem;
    }
    
    .artifact-header {
        grid-template-columns: 1fr;
    }
    
    .main-content {
        padding: 1rem;
    }
}