:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --gradient-start: #667eea;
    --gradient-end: #764ba2;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --card-shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    padding: 30px 0;
}

.container {
    animation: fadeIn 0.6s ease-out;
}

.page-header {
    background: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    margin-bottom: 30px;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--gradient-start), var(--gradient-end));
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 25px;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    text-align: center;
    transition: all 0.3s ease;
}

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

.stat-card .stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-card .stat-label {
    color: #6b7280;
    font-size: 0.9rem;
    margin-top: 5px;
}

.stat-card .stat-icon {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.navbar {
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end)) !important;
    backdrop-filter: blur(10px);
    padding: 15px 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 10px 0;
    box-shadow: 0 4px 30px rgba(0,0,0,0.15);
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.nav-link {
    font-weight: 500;
    padding: 10px 18px !important;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: white;
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 30px;
}

.nav-link:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-2px);
}

.navbar-toggler {
    border: 2px solid rgba(255,255,255,0.3);
    padding: 8px 12px;
    transition: all 0.3s ease;
}

.navbar-toggler:hover {
    background: rgba(255,255,255,0.1);
    transform: rotate(180deg);
}

.navbar-toggler:focus {
    box-shadow: none;
    border-color: white;
}

.hero-section {
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: white;
    border-radius: 20px;
    margin-bottom: 40px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--card-shadow-hover);
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.3;
    animation: backgroundMove 20s linear infinite;
}

@keyframes backgroundMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.hero-section .container {
    position: relative;
    z-index: 1;
}

.hero-section h1 {
    font-weight: 800;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
    animation: fadeInUp 0.8s ease-out;
}

.hero-section .lead {
    font-size: 1.4rem;
    margin-bottom: 30px;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-section .btn {
    padding: 12px 32px;
    font-size: 1.1rem;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
    transition: all 0.3s ease;
    animation: fadeInUp 0.8s ease-out 0.4s both;
    border: 2px solid white;
    background: transparent;
}

.hero-section .btn:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.photo-card {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    background: white;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.photo-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--card-shadow-hover);
}

.photo-card .card-img-top {
    height: 220px;
    object-fit: cover;
    width: 100%;
    transition: transform 0.5s ease;
}

.photo-card:hover .card-img-top {
    transform: scale(1.05);
}

.photo-card .card-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.photo-card .card-title {
    font-size: 1.15rem;
    margin-bottom: 12px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 600;
    color: var(--dark-color);
}

.photo-card .card-text {
    color: #6b7280;
    font-size: 0.9rem;
}

.photo-card .card-text i {
    color: var(--primary-color);
    margin-right: 5px;
}

.photo-card .badge {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end)) !important;
    font-weight: 500;
    padding: 6px 12px;
}

.photo-card .btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border: none;
    border-radius: 25px;
    padding: 8px 20px;
    font-weight: 500;
    transition: all 0.3s ease;
    margin-top: auto;
}

.photo-card .btn-primary:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.photo-card-wrapper {
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
}

.photo-card-wrapper:nth-child(1) { animation-delay: 0.1s; }
.photo-card-wrapper:nth-child(2) { animation-delay: 0.2s; }
.photo-card-wrapper:nth-child(3) { animation-delay: 0.3s; }
.photo-card-wrapper:nth-child(4) { animation-delay: 0.4s; }
.photo-card-wrapper:nth-child(5) { animation-delay: 0.5s; }
.photo-card-wrapper:nth-child(6) { animation-delay: 0.6s; }

.filter-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-buttons .btn {
    border-radius: 25px;
    padding: 10px 24px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid #e5e7eb;
    background: white;
    color: #374151;
}

.filter-buttons .btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.15);
}

.filter-buttons .btn.active {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.filter-buttons .btn.active:hover {
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(79, 70, 229, 0.4);
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dark-color);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 50px;
    height: 4px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 2px;
}

.category-filter select {
    border-radius: 20px;
}

.search-box {
    display: flex;
    gap: 10px;
}

.search-box input {
    border-radius: 20px 0 0 20px;
}

.search-box button {
    border-radius: 0 20px 20px 0;
}

.avatar-placeholder {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin: 0 auto;
}

.photo-meta {
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.photo-meta p {
    margin-bottom: 5px;
}

.action-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.comment {
    padding: 10px 0;
}

.comment:last-child {
    border-bottom: none;
}

.footer {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: white;
    padding: 50px 0 30px;
    margin-top: auto;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end), var(--gradient-start));
    background-size: 200% 100%;
    animation: gradientMove 3s linear infinite;
}

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

.footer p {
    margin: 0;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer p:hover {
    opacity: 1;
}

.footer-social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.footer-social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.3s ease;
}

.footer-social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(79, 70, 229, 0.4);
}

.alert {
    border-radius: 8px;
}

.card {
    border-radius: 10px;
    border: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.card-header {
    background-color: var(--light-color);
    border-bottom: 1px solid #dee2e6;
    font-weight: 600;
}

.btn {
    border-radius: 10px;
    padding: 10px 20px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border: none;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
}

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

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, #10b981, #059669);
    border: none;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    background: linear-gradient(135deg, #10b981, #059669);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    border: none;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

.btn-warning {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    border: none;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
}

.form-control,
.form-select {
    border-radius: 8px;
}

.badge {
    padding: 5px 10px;
    border-radius: 12px;
}

.pagination {
    gap: 8px;
}

.pagination .page-link {
    border-radius: 12px;
    margin: 0;
    border: 2px solid #e5e7eb;
    color: #374151;
    padding: 10px 18px;
    font-weight: 500;
    transition: all 0.3s ease;
    background: white;
}

.pagination .page-link:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: #f9fafb;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.15);
}

.pagination .page-item.active .page-link {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.pagination .page-item.disabled .page-link {
    color: #9ca3af;
    border-color: #e5e7eb;
    background: #f3f4f6;
}

.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    border: none;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(79, 70, 229, 0.4);
    transition: all 0.3s ease;
    z-index: 1000;
    font-size: 1.2rem;
}

.scroll-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 6px 25px rgba(79, 70, 229, 0.5);
}

.scroll-to-top.show {
    display: flex;
    animation: bounceIn 0.5s ease-out;
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.8);
    }
    50% {
        transform: translateY(-5px) scale(1.1);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.hero-carousel {
    position: relative;
    width: 100%;
    height: 500px;
    overflow: hidden;
    border-radius: 20px;
    margin-bottom: 40px;
    box-shadow: var(--card-shadow-hover);
    background: #f0f0f0;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease-in-out, visibility 0.8s ease-in-out;
    z-index: 1;
}

.carousel-slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 2;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.carousel-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.1) 50%, rgba(0,0,0,0.5) 100%);
    display: flex;
    align-items: flex-end;
    padding: 60px;
}

.carousel-content {
    color: white;
    max-width: 600px;
    animation: fadeInUp 0.8s ease-out;
}

.carousel-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.carousel-content p {
    font-size: 1.2rem;
    margin-bottom: 25px;
    opacity: 0.95;
}

.carousel-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 20;
}

.carousel-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.carousel-indicator:hover {
    background: rgba(255,255,255,0.8);
    transform: scale(1.2);
}

.carousel-indicator.active {
    background: white;
    width: 36px;
    border-radius: 6px;
}

.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 20;
    color: white;
    font-size: 1.5rem;
}

.carousel-arrow:hover {
    background: rgba(255,255,255,0.4);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

.carousel-arrow.prev {
    left: 20px;
}

.carousel-arrow.next {
    right: 20px;
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 1.5rem;
    }
    
    .hero-section .lead {
        font-size: 1rem;
    }
    
    .photo-card .card-img-top {
        height: 150px;
    }
    
    .filter-buttons {
        justify-content: center;
    }
    
    .search-box {
        width: 100%;
    }
    
    .search-box input {
        flex: 1;
    }
    
    .hero-carousel {
        height: 350px;
    }
    
    .carousel-overlay {
        padding: 30px;
    }
    
    .carousel-content h2 {
        font-size: 1.5rem;
    }
    
    .carousel-content p {
        font-size: 0.9rem;
    }
    
    .carousel-arrow {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .carousel-arrow.prev {
        left: 10px;
    }
    
    .carousel-arrow.next {
        right: 10px;
    }
    
    .scroll-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 15px;
    }
    
    .stat-card {
        padding: 20px;
    }
    
    .stat-card .stat-number {
        font-size: 2rem;
    }
}