:root {

    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --info-color: #17a2b8;
    
    --bg-color: #f8f9fa;
    --text-color: #333333;
    --card-bg: #ffffff;
    --border-color: #dee2e6;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.15);
    
    --radius: 8px;
    --radius-lg: 12px;
    --transition: all 0.3s ease;
    

    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}


[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #ffffff;
    --card-bg: #2d2d2d;
    --border-color: #404040;
    --primary-color: #4a90e2;
    --secondary-color: #357abd;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.4);
}


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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: var(--transition);
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}


input, textarea, .code-block, .api-key-input, .selectable {
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    user-select: text;
}


.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: calc(100vh - 140px);
}


.navbar {
    background: var(--card-bg);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: var(--primary-color);
    margin: 0;
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    padding: 8px 12px;
    border-radius: var(--radius);
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color);
    background: rgba(52, 152, 219, 0.1);
}

.nav-user {
    color: var(--text-color);
    font-weight: 500;
}


.notification-icon {
    position: relative;
    text-decoration: none;
    font-size: 1.2rem;
}

.notification-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--danger-color);
    color: white;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}


.nav-dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--card-bg);
    min-width: 180px;
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius);
    z-index: 1000;
    border: 1px solid var(--border-color);
}

.dropdown-content a {
    display: block;
    padding: 12px 16px;
    text-decoration: none;
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.dropdown-content a:hover {
    background: var(--primary-color);
    color: white;
}

.dropdown-content a:last-child {
    border-bottom: none;
}

.nav-dropdown:hover .dropdown-content {
    display: block;
}


.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
}


.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    font-family: inherit;
}

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

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

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

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

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background: #c0392b;
    transform: translateY(-2px);
}

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-success:hover {
    background: #219a52;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.875rem;
}


.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 16px;
    transition: var(--transition);
    background: var(--card-bg);
    color: var(--text-color);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: #666;
    font-size: 0.875rem;
}

[data-theme="dark"] .form-group small {
    color: #aaa;
}


.checkbox-label {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
    gap: 10px;
}

.checkbox-label input {
    width: auto;
    margin-top: 2px;
}


.alert {
    padding: 15px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    border-left: 4px solid;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-left-color: var(--success-color);
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-left-color: var(--danger-color);
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border-left-color: var(--warning-color);
}

[data-theme="dark"] .alert-success {
    background: #1e3a2e;
    color: #4ade80;
}

[data-theme="dark"] .alert-error {
    background: #3a1e1e;
    color: #f87171;
}

[data-theme="dark"] .alert-warning {
    background: #3a2e1e;
    color: #fbbf24;
}


.card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.auth-card, .upload-card {
    max-width: 500px;
    margin: 0 auto;
}


.hero {
    text-align: center;
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-radius: var(--radius-lg);
    margin-bottom: 40px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}


.features {
    margin: 60px 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-card {
    text-align: center;
    padding: 40px 30px;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
    color: var(--text-color);
}


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

.stat-card {
    text-align: center;
    padding: 25px;
    border-left: 4px solid var(--primary-color);
}

.stat-card.users { border-left-color: #e74c3c; }
.stat-card.images { border-left-color: #27ae60; }
.stat-card.storage { border-left-color: #f39c12; }
.stat-card.feedbacks { border-left-color: #9b59b6; }

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.stat-label {
    color: var(--text-color);
    opacity: 0.8;
    font-size: 0.9rem;
}


.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.gallery-item {
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.gallery-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.image-info {
    padding: 15px;
}

.image-title {
    font-weight: 500;
    margin-bottom: 5px;
    color: var(--text-color);
}

.image-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: #666;
}

[data-theme="dark"] .image-meta {
    color: #aaa;
}

.image-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
    gap: 10px;
}


.status-badge {
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-pending { background: #fff3cd; color: #856404; }
.status-verified { background: #d4edda; color: #155724; }
.status-admin { background: #cce7ff; color: #004085; }
.status-public { background: #d4edda; color: #155724; }
.status-private { background: #f8d7da; color: #721c24; }

[data-theme="dark"] .status-pending { background: #3a2e1e; color: #fbbf24; }
[data-theme="dark"] .status-verified { background: #1e3a2e; color: #4ade80; }
[data-theme="dark"] .status-admin { background: #1e2a3a; color: #60a5fa; }
[data-theme="dark"] .status-public { background: #1e3a2e; color: #4ade80; }
[data-theme="dark"] .status-private { background: #3a1e1e; color: #f87171; }


.upload-area {
    border: 2px dashed var(--primary-color);
    border-radius: var(--radius);
    padding: 40px;
    text-align: center;
    margin-bottom: 20px;
    background: var(--card-bg);
    transition: var(--transition);
    cursor: pointer;
}

.upload-area:hover, .upload-area.dragover {
    background: rgba(52, 152, 219, 0.1);
    border-color: var(--secondary-color);
}


.file-list {
    margin-top: 20px;
}

.file-item {
    display: flex;
    align-items: center;
    padding: 15px;
    background: var(--card-bg);
    border-radius: var(--radius);
    margin-bottom: 10px;
    box-shadow: var(--shadow);
    gap: 15px;
}

.file-preview {
    width: 60px;
    height: 60px;
    border-radius: 5px;
    object-fit: cover;
    background: var(--bg-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #666;
}

.file-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 5px;
}

.file-info {
    flex: 1;
}

.file-name {
    font-weight: bold;
    margin-bottom: 5px;
}

.file-size {
    color: #666;
    font-size: 0.9em;
}

[data-theme="dark"] .file-size {
    color: #aaa;
}

.file-metadata {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.file-title-input {
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-color);
    color: var(--text-color);
}

.remove-file {
    background: var(--danger-color);
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
}

.remove-file:hover {
    background: #c0392b;
}


.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 10px 0;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    color: white;
    cursor: pointer;
    transition: var(--transition);
}

.tag:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}


.code-block {
    background: var(--bg-color);
    padding: 15px;
    border-radius: var(--radius);
    font-family: 'Courier New', monospace;
    margin: 10px 0;
    border-left: 4px solid var(--primary-color);
    overflow-x: auto;
}

.endpoint {
    color: var(--primary-color);
    font-weight: bold;
}

.param {
    color: var(--danger-color);
}

.comment {
    color: #666;
    font-style: italic;
}

[data-theme="dark"] .comment {
    color: #aaa;
}


.pagination {
    display: flex;
    gap: 5px;
    justify-content: center;
    margin-top: 20px;
    flex-wrap: wrap;
}


.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #666;
}

[data-theme="dark"] .empty-state {
    color: #aaa;
}


.footer {
    background: var(--card-bg);
    color: var(--text-color);
    text-align: center;
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

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

.footer a {
    color: var(--primary-color);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}


@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--card-bg);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        display: none;
        border-top: 1px solid var(--border-color);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-dropdown .dropdown-content {
        position: static;
        box-shadow: none;
        border: none;
        background: transparent;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-grid,
    .stats-grid,
    .gallery {
        grid-template-columns: 1fr;
    }
    
    .file-item {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }
    
    .file-metadata {
        margin: 10px 0;
    }
    
    .container {
        padding: 15px;
    }
}


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

.loading-bar {
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--success-color), var(--danger-color));
    animation: loading 2s infinite;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9999;
}


.theme-toggle {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}


.captcha-container {
    display: flex;
    gap: 10px;
    align-items: center;
}

.captcha-container input {
    flex: 1;
}

.captcha-container img {
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    height: 40px;
    cursor: pointer;
}


.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }
.hidden { display: none; }