/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #64748b;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --background: #0f172a;
    --surface: #1e293b;
    --surface-light: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #475569;
    --border-radius: 8px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background-color: var(--surface);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 15px;
}

.nav-user {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 40px 0;
}

/* Footer */
.footer {
    background-color: var(--surface);
    border-top: 1px solid var(--border-color);
    padding: 20px 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

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

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

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background-color: var(--surface-light);
}

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

.btn-danger:hover {
    background-color: #dc2626;
}

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

.btn-success:hover {
    background-color: #16a34a;
}

.btn-warning {
    background-color: var(--warning-color);
    color: #1e293b;
}

.btn-warning:hover {
    background-color: #d97706;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

/* Cards */
.card {
    background-color: var(--surface);
    border-radius: var(--border-radius);
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: var(--shadow);
}

.card h2 {
    margin-bottom: 20px;
    font-size: 1.25rem;
    color: var(--text-primary);
}

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

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

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="url"] {
    width: 100%;
    padding: 12px 15px;
    background-color: var(--surface-light);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    color: var(--text-primary);
    transition: border-color 0.2s ease;
}

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

.form-group input::placeholder {
    color: var(--text-secondary);
}

.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    margin-bottom: 0;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 12px 15px;
    background-color: var(--surface-light);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.radio-label:hover {
    border-color: var(--primary-color);
}

.radio-label input[type="radio"]:checked + span {
    color: var(--primary-color);
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.alert-success {
    background-color: rgba(34, 197, 94, 0.2);
    border: 1px solid var(--success-color);
    color: var(--success-color);
}

.alert-error {
    background-color: rgba(239, 68, 68, 0.2);
    border: 1px solid var(--danger-color);
    color: var(--danger-color);
}

.alert-info {
    background-color: rgba(99, 102, 241, 0.2);
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.alert-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: inherit;
    line-height: 1;
}

/* Auth Pages */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.auth-card {
    background-color: var(--surface);
    padding: 40px;
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow);
}

.auth-card h1 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.75rem;
}

.auth-links {
    margin-top: 25px;
    text-align: center;
    color: var(--text-secondary);
}

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

.auth-links a:hover {
    text-decoration: underline;
}

/* Dashboard */
.dashboard h1 {
    margin-bottom: 30px;
    font-size: 2rem;
}

.download-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Downloads Table */
.downloads-table-wrapper {
    overflow-x: auto;
}

.downloads-table {
    width: 100%;
    border-collapse: collapse;
}

.downloads-table th,
.downloads-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.downloads-table th {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
}

.downloads-table tbody tr:hover {
    background-color: var(--surface-light);
}

.title-cell {
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

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

/* Status Badges */
.status {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.status-pending {
    background-color: rgba(245, 158, 11, 0.2);
    color: var(--warning-color);
}

.status-downloading {
    background-color: rgba(99, 102, 241, 0.2);
    color: var(--primary-color);
}

.status-completed {
    background-color: rgba(34, 197, 94, 0.2);
    color: var(--success-color);
}

.status-error {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

.status-error.error-btn {
    cursor: pointer;
    text-decoration: underline;
}

.status-error.error-btn:hover {
    background-color: rgba(239, 68, 68, 0.4);
}

.empty-message {
    color: var(--text-secondary);
    text-align: center;
    padding: 30px;
}

/* Video Page */
.video-page {
    max-width: 900px;
    margin: 0 auto;
}

.video-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 25px;
}

.video-header h1 {
    font-size: 1.5rem;
    flex: 1;
}

.video-container {
    background-color: #000;
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 25px;
}

.video-player {
    width: 100%;
    max-height: 70vh;
    display: block;
}

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

.info-item {
    color: var(--text-secondary);
}

.info-item strong {
    color: var(--text-primary);
}

.video-actions {
    margin-bottom: 30px;
}

.qr-section {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.qr-section h3 {
    margin-bottom: 10px;
}

.qr-section p {
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.qr-image {
    max-width: 200px;
    border-radius: var(--border-radius);
    background: white;
    padding: 10px;
}

.share-url {
    margin-top: 15px;
    padding: 10px;
    background-color: var(--surface-light);
    border-radius: var(--border-radius);
    word-break: break-all;
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--primary-color);
    user-select: all;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background-color: var(--surface);
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
    max-width: 350px;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-content h3 {
    margin-bottom: 20px;
}

.modal-content p {
    margin-top: 15px;
    color: var(--text-secondary);
}

#qr-code-container img {
    max-width: 200px;
    border-radius: var(--border-radius);
    background: white;
    padding: 10px;
}

/* Error Modal */
.modal-error {
    max-width: 500px;
    text-align: left;
}

.modal-error h3 {
    color: var(--danger-color);
    text-align: center;
}

.error-details {
    margin-top: 20px;
}

.error-details p {
    margin: 5px 0;
}

.error-details strong {
    color: var(--text-primary);
}

.error-url {
    word-break: break-all;
    color: var(--primary-color);
    font-size: 0.9rem;
    padding: 8px;
    background-color: var(--surface-light);
    border-radius: 4px;
    margin-bottom: 15px;
}

.error-message {
    background-color: var(--surface-light);
    padding: 15px;
    border-radius: var(--border-radius);
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--danger-color);
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 200px;
    overflow-y: auto;
    margin-top: 5px;
}

/* Admin Page */
.admin-page h1 {
    margin-bottom: 30px;
    font-size: 2rem;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 25px;
}

.generate-key-form {
    margin-bottom: 25px;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th,
.admin-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.admin-table th {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.key-code {
    background-color: var(--surface-light);
    padding: 4px 8px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    user-select: all;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .admin-grid {
        grid-template-columns: 1fr;
    }
    
    .video-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .downloads-table th,
    .downloads-table td {
        padding: 10px 8px;
    }
    
    .actions-cell {
        flex-direction: column;
    }
    
    .btn-sm {
        width: 100%;
    }
    
    .radio-group {
        gap: 8px;
    }
}