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

:root {
    --primary: #667eea;
    --primary-dark: #5a6fd6;
    --secondary: #764ba2;
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    --radius: 8px;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--gray-100);
    color: var(--gray-800);
    min-height: 100vh;
}

.hidden { display: none !important; }

/* Auth Pages */
.auth-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 40px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header h1 {
    font-size: 24px;
    color: var(--gray-800);
    margin-bottom: 8px;
}

.auth-header p {
    color: var(--gray-600);
}

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

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--gray-700);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 14px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

/* Buttons */
.btn {
    padding: 12px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: var(--gray-600);
    color: white;
}

.btn-secondary:hover {
    background: var(--gray-700);
}

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

.btn-link {
    background: none;
    color: var(--primary);
    padding: 8px;
}

.btn-link:hover {
    text-decoration: underline;
}

.btn-block {
    width: 100%;
}

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

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Error/Status Messages */
.error-message {
    color: var(--danger);
    padding: 10px;
    text-align: center;
    font-size: 14px;
}

.status-message {
    padding: 15px;
    border-radius: var(--radius);
    margin-bottom: 15px;
}

.status-message.info {
    background: #d1ecf1;
    color: #0c5460;
}

.status-message.success {
    background: #d4edda;
    color: #155724;
}

.status-message.error {
    background: #f8d7da;
    color: #721c24;
}

/* MFA */
.mfa-section {
    margin-bottom: 20px;
}

.mfa-section + .mfa-section {
    padding-top: 20px;
    border-top: 1px solid var(--gray-200);
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    background: white;
    box-shadow: var(--shadow);
}

.navbar-brand {
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    color: var(--gray-600);
    text-decoration: none;
    padding: 8px 12px;
    border-radius: var(--radius);
    transition: all 0.2s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: var(--gray-100);
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-left: 20px;
    border-left: 1px solid var(--gray-200);
}

#current-user {
    font-weight: 500;
    color: var(--gray-700);
}

/* Main Content */
.main-content {
    padding: 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.content-section {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 24px;
    color: var(--gray-800);
}

/* Cards */
.card {
    background: white;
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}

.card h2 {
    font-size: 16px;
    color: var(--gray-700);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary);
}

.section-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.section-grid .full-width {
    grid-column: 1 / -1;
}

/* File Upload */
.file-upload {
    position: relative;
}

.file-upload input[type="file"] {
    display: none;
}

.file-upload-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
}

.file-upload-label:hover {
    border-color: var(--primary);
    background: var(--gray-100);
}

.file-upload.has-file .file-upload-label {
    display: none;
}

.upload-icon {
    font-size: 48px;
    color: var(--gray-400);
    margin-bottom: 10px;
}

.upload-text {
    color: var(--gray-600);
}

.preview-image {
    max-width: 100%;
    max-height: 300px;
    border-radius: var(--radius);
    object-fit: contain;
}

/* Output */
.output-video {
    width: 100%;
    max-height: 500px;
    border-radius: var(--radius);
    background: var(--gray-900);
}

/* Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.gallery-item {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.2s;
}

.gallery-item:hover {
    transform: translateY(-4px);
}

.gallery-item-media {
    position: relative;
    aspect-ratio: 16/9;
    background: var(--gray-900);
}

.gallery-item-media video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-item-status {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.gallery-item-status.completed { background: var(--success); color: white; }
.gallery-item-status.processing { background: var(--warning); color: var(--gray-900); }
.gallery-item-status.pending { background: var(--gray-500); color: white; }
.gallery-item-status.failed { background: var(--danger); color: white; }

.gallery-item-info {
    padding: 15px;
}

.gallery-item-prompt {
    font-size: 13px;
    color: var(--gray-700);
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.gallery-item-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--gray-500);
}

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

/* Admin */
.admin-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.tab-btn {
    padding: 10px 20px;
    border: none;
    background: var(--gray-200);
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
}

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

.admin-tab {
    animation: fadeIn 0.3s ease;
}

.users-list {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.user-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--gray-200);
}

.user-item:last-child {
    border-bottom: none;
}

.user-info h4 {
    font-size: 14px;
    margin-bottom: 4px;
}

.user-info p {
    font-size: 12px;
    color: var(--gray-500);
}

.user-badges {
    display: flex;
    gap: 8px;
    margin-top: 4px;
}

.badge {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-admin { background: var(--primary); color: white; }
.badge-inactive { background: var(--danger); color: white; }

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    border-radius: var(--radius);
    padding: 30px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-header h3 {
    font-size: 18px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--gray-500);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--gray-200);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

.pagination button {
    padding: 8px 12px;
    border: 1px solid var(--gray-300);
    background: white;
    border-radius: var(--radius);
    cursor: pointer;
}

.pagination button.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Filter */
.filter-group select {
    padding: 8px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

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

/* Responsive */
@media (max-width: 768px) {
    .section-grid {
        grid-template-columns: 1fr;
    }

    .navbar {
        flex-direction: column;
        gap: 15px;
    }

    .navbar-menu {
        flex-wrap: wrap;
        justify-content: center;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}