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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #f9fafb;
    min-height: 100vh;
}

/* Header */
header {
    background: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px 0;
}

.brand-text {
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

nav ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 0;
    padding: 0;
}

nav ul li {
    position: relative;
}

.nav-link {
    text-decoration: none;
    color: #374151;
    font-weight: 500;
    padding: 10px 16px;
    border-radius: 10px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-link:hover {
    background: #f3f4f6;
    color: #667eea;
}

.nav-link-secondary {
    text-decoration: none;
    color: #374151;
    font-weight: 500;
    padding: 10px 20px;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.nav-link-secondary:hover {
    background: #f3f4f6;
}

.btn-nav-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-nav-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

/* User Menu */
.user-menu {
    position: relative;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.user-avatar:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.user-dropdown {
    position: absolute;
    right: 0;
    top: 55px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    min-width: 250px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.user-menu:hover .user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-info {
    padding: 20px;
}

.user-name {
    font-size: 16px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 5px;
}

.user-email {
    font-size: 13px;
    color: #6b7280;
}

.dropdown-divider {
    height: 1px;
    background: #e5e7eb;
    margin: 0 15px;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    color: #374151;
    text-decoration: none;
    transition: all 0.3s ease;
}

.dropdown-item:hover {
    background: #f9fafb;
}

.dropdown-item.logout {
    color: #ef4444;
    border-radius: 0 0 12px 12px;
}

.dropdown-item.logout:hover {
    background: #fee2e2;
}

/* Messages */
.messages-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 1000;
    max-width: 400px;
}

.message {
    background: white;
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.message-success {
    border-left: 4px solid #10b981;
}

.message-success svg {
    color: #10b981;
}

.message-error {
    border-left: 4px solid #ef4444;
}

.message-error svg {
    color: #ef4444;
}

.message-info,
.message-warning {
    border-left: 4px solid #f59e0b;
}

.message-info svg,
.message-warning svg {
    color: #f59e0b;
}

.message span {
    flex: 1;
    font-size: 14px;
    color: #374151;
}

.message-close {
    background: none;
    border: none;
    color: #9ca3af;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    transition: color 0.3s ease;
}

.message-close:hover {
    color: #374151;
}

main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 20px;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    animation: slideDown 0.5s ease-out;
}

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

.hero-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;
    flex-wrap: wrap;
}

.hero-text h1 {
    color: white;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 10px;
}

.hero-text p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 18px;
}

.hero-stats {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.stat-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    min-width: 180px;
    transition: all 0.3s ease;
}

.stat-card:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-5px);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.stat-info {
    color: white;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
}

.stat-label {
    font-size: 14px;
    opacity: 0.9;
}

/* Filters Section */
.filters-section {
    background: white;
    border-radius: 16px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.search-filter-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.search-box {
    position: relative;
    flex: 1;
}

.search-box svg {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #9ca3af;
}

.search-box input {
    width: 100%;
    padding: 14px 14px 14px 45px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.3s ease;
}

.search-box input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.filter-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-select {
    flex: 1;
    min-width: 200px;
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    font-size: 14px;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-select:focus {
    outline: none;
    border-color: #667eea;
}

.btn-filter {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.btn-filter:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.btn-clear {
    background: #f3f4f6;
    color: #374151;
    text-decoration: none;
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
}

.btn-clear:hover {
    background: #e5e7eb;
}

/* Models Grid */
.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.model-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.model-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.model-thumbnail {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.model-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.model-card:hover .model-thumbnail img {
    transform: scale(1.1);
}

.no-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.5);
}

.model-category {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    color: #667eea;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.model-info {
    padding: 20px;
}

.model-title {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 10px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.model-description {
    font-size: 14px;
    color: #6b7280;
    line-height: 1.5;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.model-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 15px;
}

.tag {
    background: #f3f4f6;
    color: #4b5563;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.model-actions {
    display: flex;
    gap: 10px;
}

.btn-view {
    flex: 1;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    padding: 10px 16px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: all 0.3s ease;
}

.btn-view:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(102, 126, 234, 0.4);
}

.btn-download {
    background: #10b981;
    color: white;
    text-decoration: none;
    padding: 10px 14px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.btn-download:hover {
    background: #059669;
    transform: translateY(-2px);
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin: 30px 0;
}

.page-link {
    background: white;
    color: #667eea;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

.page-link:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    transform: translateY(-2px);
}

.page-info {
    padding: 10px 20px;
    background: white;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    color: #374151;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.empty-state svg {
    color: #9ca3af;
    margin-bottom: 20px;
}

.empty-state h3 {
    font-size: 24px;
    color: #1a1a1a;
    margin-bottom: 10px;
}

.empty-state p {
    color: #6b7280;
    margin-bottom: 25px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    display: inline-block;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

/* Responsive */
@media (max-width: 1024px) {
    nav {
        padding: 0 15px;
    }
    
    .nav-link span {
        display: none;
    }
}

@media (max-width: 768px) {
    .brand-text {
        font-size: 16px;
    }
    
    nav ul {
        gap: 8px;
    }
    
    .nav-link,
    .nav-link-secondary,
    .btn-nav-primary {
        padding: 8px 12px;
        font-size: 14px;
    }
    
    .user-dropdown {
        right: -50px;
    }
    
    .messages-container {
        left: 20px;
        right: 20px;
        max-width: calc(100% - 40px);
    }
    
    .hero-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .hero-text h1 {
        font-size: 28px;
    }
    
    .hero-stats {
        width: 100%;
        justify-content: space-between;
    }
    
    .stat-card {
        min-width: 0;
        flex: 1;
        flex-direction: column;
        gap: 8px;
        padding: 15px;
    }
    
    .stat-icon {
        width: 48px;
        height: 48px;
    }
    
    .stat-value {
        font-size: 24px;
    }
    
    .models-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 15px;
    }
    
    .filter-group {
        flex-direction: column;
    }
    
    .filter-select {
        min-width: 100%;
    }
}

@media (max-width: 480px) {
    .brand-text {
        display: none;
    }
    
    .hero-section {
        padding: 25px 20px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 12px;
    }
    
    .stat-card {
        flex-direction: row;
        width: 100%;
    }
    
    .models-grid {
        grid-template-columns: 1fr;
    }
}