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

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --danger-color: #dc3545;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --border-radius: 10px;
    --shadow: 0 5px 15px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--primary-gradient);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.auth-container {
    max-width: 400px;
    margin: 50px auto;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow);
    padding: 40px;
    text-align: center;
}

.admin-panel {
    max-width: 1400px;
    margin: 0 auto;
    display: none;
}

.admin-panel.show {
    display: block;
}

.header {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 20px 30px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid #667eea;
}

.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.tab-btn {
    background: white;
    border: none;
    padding: 12px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    box-shadow: var(--shadow);
}

.tab-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

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

.tab-content {
    display: none;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.tab-content.active {
    display: block;
}

.form-container {
    padding: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: #333;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e1e8ed;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

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

.price-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.image-preview {
    width: 100%;
    max-width: 250px;
    height: 180px;
    border: 2px dashed #e1e8ed;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 10px auto;
    cursor: pointer;
    transition: var(--transition);
    background-size: cover;
    background-position: center;
}

.image-preview:hover {
    border-color: #667eea;
}

.image-preview.has-image {
    border-style: solid;
}

.image-preview.required {
    border-color: #ff6b6b;
    border-width: 3px;
}

.image-preview.required.has-image {
    border-color: #28a745;
}

.images-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 10px;
}

.image-item {
    display: flex;
    flex-direction: column;
}

.image-label {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 5px;
    color: var(--text-color);
}

.images-grid .image-preview {
    height: 150px;
    max-width: none;
}

.btn {
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

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

.btn-warning {
    background: var(--warning-color);
    color: #333;
}

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 0.875rem;
}

.products-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.products-table th,
.products-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #e1e8ed;
}

.products-table th {
    background: #f8f9fa;
    font-weight: 600;
    position: sticky;
    top: 0;
}

.products-table img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 6px;
}

.table-container {
    max-height: 600px;
    overflow-y: auto;
    margin: 20px;
}

.filters {
    display: flex;
    gap: 15px;
    padding: 20px;
    background: #f8f9fa;
    flex-wrap: wrap;
    align-items: center;
}

.search-input {
    flex: 1;
    min-width: 200px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
}

.category-filter {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    min-width: 150px;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.stat-card {
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: #667eea;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    position: relative;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.close-modal {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 1.5rem;
    cursor: pointer;
    color: #999;
}

.close-modal:hover {
    color: #333;
}

.message {
    padding: 12px 20px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    display: none;
    align-items: center;
    gap: 10px;
}

.message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.loading {
    display: none;
    align-items: center;
    gap: 10px;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.logout-btn {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

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

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .tabs {
        justify-content: center;
    }

    .price-group {
        grid-template-columns: 1fr;
    }

    .filters {
        flex-direction: column;
    }

    .products-table {
        font-size: 0.875rem;
    }

    .products-table th,
    .products-table td {
        padding: 8px;
    }
}

/* Estilos para la sección de video */
.video-upload-section {
    margin-top: 10px;
}

.video-preview {
    border: 2px dashed #ddd;
    border-radius: 8px;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    background: #fafafa;
}

.video-preview:hover {
    border-color: #007bff;
    background: #f8f9ff;
}

.video-upload-placeholder {
    text-align: center;
    padding: 20px;
}

.video-display {
    display: flex;
    gap: 15px;
    padding: 15px;
    width: 100%;
}

.video-thumbnail {
    width: 120px;
    height: 80px;
    border-radius: 6px;
    background-size: cover;
    background-position: center;
    background-color: #f0f0f0;
    flex-shrink: 0;
    border: 1px solid #ddd;
}

.video-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.video-name {
    font-weight: 600;
    color: #333;
    margin-bottom: 5px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.video-details {
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 10px;
}

.video-actions {
    display: flex;
    gap: 8px;
}

.btn-small {
    font-size: 0.8rem;
    padding: 5px 10px;
}

.btn-outline {
    background: transparent;
    border: 2px solid #007bff;
    color: #007bff;
}

.btn-outline:hover {
    background: #007bff;
    color: white;
}

/* Modal para vista previa de video */
.video-modal {
    display: none;
    position: fixed;
    z-index: 1001;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
}

.video-modal-content {
    position: relative;
    margin: 5% auto;
    width: 80%;
    max-width: 800px;
    background: white;
    border-radius: 8px;
    overflow: hidden;
}

.video-modal video {
    width: 100%;
    height: auto;
    max-height: 70vh;
}

.video-modal-close {
    position: absolute;
    top: 10px;
    right: 15px;
    color: white;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1002;
    background: rgba(0,0,0,0.5);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-modal-close:hover {
    background: rgba(0,0,0,0.8);
}

/* Indicador de video en la tabla de productos */
.video-indicator {
    color: #28a745;
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
}

.video-indicator:hover {
    color: #20a041;
    transform: scale(1.1);
}