/* ============================================================
   ADMIN STYLES — Shared across all admin pages
   ============================================================ */
:root {
    --royal-blue: #2563EB;
    --indigo: #4338CA;
    --violet: #7C3AED;
    --bg-body: #F1F5F9;
    --bg-card: #FFFFFF;
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    --border-color: #E2E8F0;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
    --radius: 18px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --max-width: 1400px;
}

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

body {
    font-family: var(--font-sans);
    background: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    padding: 30px 20px;
}

a {
    text-decoration: none;
    color: inherit;
}
ul {
    list-style: none;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-body);
}
::-webkit-scrollbar-thumb {
    background: var(--royal-blue);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--indigo);
}

/* ============================================================
   ADMIN LOGIN
   ============================================================ */
.admin-login {
    max-width: 420px;
    margin: 60px auto;
    background: var(--bg-card);
    padding: 40px 36px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-hover);
    border: 1px solid var(--border-color);
}

.admin-login .logo {
    text-align: center;
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.admin-login .logo .accent {
    color: var(--royal-blue);
}

.admin-login .subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 24px;
}

.admin-login .login-error {
    color: #EF4444;
    font-size: 0.9rem;
    text-align: center;
    margin-bottom: 12px;
    min-height: 24px;
}

.admin-login label {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 4px;
    color: var(--text-secondary);
}

.admin-login input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition);
    background: var(--bg-body);
    color: var(--text-primary);
}

.admin-login input:focus {
    border-color: var(--royal-blue);
    outline: none;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08);
    background: #fff;
}

.admin-login button[type="submit"] {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--royal-blue), var(--indigo));
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.admin-login button[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
}

.admin-login .login-hint {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 16px;
    background: var(--bg-body);
    padding: 8px;
    border-radius: var(--radius-sm);
}

/* ============================================================
   ADMIN DASHBOARD
   ============================================================ */
.admin-dashboard {
    display: none;
}

.admin-dashboard.visible {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    0% { opacity: 0; transform: translateY(15px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   ADMIN HEADER
   ============================================================ */
.admin-header {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px 28px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 24px;
}

.admin-header .brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-header .brand h1 {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 700;
}

.admin-header .brand h1 .accent {
    color: var(--royal-blue);
}

.admin-header .brand a {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: var(--transition);
}

.admin-header .brand a:hover {
    color: var(--royal-blue);
}

.admin-header .user-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.admin-header .user-info .username {
    font-weight: 600;
    color: var(--text-secondary);
}

.admin-header .user-info .role-badge {
    background: var(--royal-blue);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 2px 12px;
    border-radius: 20px;
}

.admin-header .logout-btn {
    background: #EF4444;
    color: #fff;
    border: none;
    padding: 8px 20px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.admin-header .logout-btn:hover {
    background: #DC2626;
    transform: translateY(-2px);
}

/* ============================================================
   ADMIN STATS
   ============================================================ */
.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.admin-stats .stat-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.admin-stats .stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.admin-stats .stat-card .number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--royal-blue);
}

.admin-stats .stat-card .label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.admin-stats .stat-card .icon {
    font-size: 1.4rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

/* ============================================================
   ADMIN CONTENT
   ============================================================ */
.admin-content {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px 28px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

/* ============================================================
   ADMIN TABS
   ============================================================ */
.admin-tabs {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 12px;
    margin-bottom: 20px;
}

.admin-tabs a {
    padding: 8px 20px;
    font-weight: 600;
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
    font-size: 0.9rem;
    background: none;
    border: none;
}

.admin-tabs a:hover {
    background: var(--bg-body);
    color: var(--text-primary);
}

.admin-tabs a.active {
    background: var(--royal-blue);
    color: #fff;
}

/* ============================================================
   TABLE
   ============================================================ */
.table-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 16px;
}

.table-toolbar h3 {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    font-weight: 700;
}

.btn-primary {
    background: var(--royal-blue);
    color: #fff;
    border: none;
    padding: 8px 20px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

.btn-secondary {
    background: var(--bg-body);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 8px 20px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

.btn-danger {
    background: #EF4444;
    color: #fff;
    border: none;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    font-size: 0.8rem;
}

.btn-danger:hover {
    background: #DC2626;
}

.btn-edit {
    background: var(--royal-blue);
    color: #fff;
    border: none;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    margin-right: 4px;
}

.btn-edit:hover {
    background: var(--indigo);
}

.btn-success {
    background: #10B981;
    color: #fff;
    border: none;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    font-size: 0.8rem;
}

.btn-success:hover {
    background: #059669;
}

.btn-warning {
    background: #F59E0B;
    color: #fff;
    border: none;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    font-size: 0.8rem;
}

.btn-warning:hover {
    background: #D97706;
}

.admin-table-wrap {
    overflow-x: auto;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.admin-table th {
    text-align: left;
    padding: 10px 12px;
    background: var(--bg-body);
    border-bottom: 2px solid var(--border-color);
    font-weight: 700;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.admin-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.admin-table tr:hover td {
    background: var(--bg-body);
}

.admin-table .actions {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

/* ============================================================
   FORMS
   ============================================================ */
.admin-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    background: var(--bg-body);
    padding: 20px;
    border-radius: var(--radius);
    margin-top: 16px;
    border: 1px solid var(--border-color);
}

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

.admin-form label {
    font-weight: 600;
    font-size: 0.85rem;
    display: block;
    margin-bottom: 4px;
    color: var(--text-secondary);
}

.admin-form input,
.admin-form textarea,
.admin-form select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    background: #fff;
    transition: var(--transition);
    color: var(--text-primary);
}

.admin-form input:focus,
.admin-form textarea:focus,
.admin-form select:focus {
    border-color: var(--royal-blue);
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.08);
}

.admin-form textarea {
    min-height: 80px;
    resize: vertical;
}

.admin-form .form-actions {
    grid-column: 1 / -1;
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 8px;
}

.admin-form .form-actions .btn-save {
    background: var(--royal-blue);
    color: #fff;
    border: none;
    padding: 8px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.admin-form .form-actions .btn-save:hover {
    background: var(--indigo);
}

.admin-form .form-actions .btn-cancel {
    background: var(--bg-body);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 8px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.admin-form .form-actions .btn-cancel:hover {
    background: var(--border-color);
}

.admin-form .form-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ============================================================
   IMAGE UPLOAD PREVIEW
   ============================================================ */
.image-upload-preview {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.image-upload-preview img {
    max-width: 120px;
    max-height: 80px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    object-fit: cover;
}

.image-upload-preview .file-input-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.image-upload-preview .file-input-wrapper input[type="file"] {
    display: inline-block;
    width: auto;
    padding: 4px;
    font-size: 0.8rem;
}

/* ============================================================
   VIDEO UPLOAD
   ============================================================ */
.admin-video-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-sm);
    padding: 24px;
    text-align: center;
    margin-bottom: 16px;
    transition: var(--transition);
    cursor: pointer;
}

.admin-video-upload-area:hover {
    border-color: var(--royal-blue);
    background: var(--bg-body);
}

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

.admin-video-upload-area label {
    cursor: pointer;
    font-weight: 600;
    color: var(--text-secondary);
}

.admin-video-upload-area label i {
    font-size: 2rem;
    display: block;
    margin-bottom: 8px;
    color: var(--royal-blue);
}

/* ============================================================
   VIDEO SOURCE TOGGLE
   ============================================================ */
.video-source-toggle {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

.video-source-toggle button {
    padding: 6px 18px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-body);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.video-source-toggle button.active {
    border-color: var(--royal-blue);
    background: var(--royal-blue);
    color: #fff;
}

.video-source-toggle button:hover:not(.active) {
    border-color: var(--royal-blue);
    background: var(--bg-body);
}

.video-source-field {
    display: none;
}

.video-source-field.visible {
    display: block;
}

/* ============================================================
   EMPTY STATE
   ============================================================ */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 2.5rem;
    margin-bottom: 12px;
    opacity: 0.5;
}

/* ============================================================
   LOADING SPINNER
   ============================================================ */
.loading-spinner {
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
}

.loading-spinner i {
    font-size: 2rem;
    animation: spin 1s linear infinite;
}

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

/* ============================================================
   TOAST NOTIFICATIONS
   ============================================================ */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 16px 24px;
    border-radius: var(--radius-sm);
    color: #fff;
    font-weight: 600;
    box-shadow: var(--shadow-hover);
    z-index: 9999;
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
    max-width: 400px;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    background: #10B981;
}

.toast.error {
    background: #EF4444;
}

.toast.info {
    background: var(--royal-blue);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 820px) {
    .admin-header {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }
    .admin-header .user-info {
        justify-content: center;
        flex-wrap: wrap;
    }
    .admin-form {
        grid-template-columns: 1fr;
    }
    .admin-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    .admin-content {
        padding: 16px;
    }
    .admin-login {
        padding: 28px 20px;
        margin: 30px 10px;
    }
    body {
        padding: 15px 10px;
    }
}

@media (max-width: 500px) {
    .admin-stats {
        grid-template-columns: 1fr;
    }
    .admin-tabs a {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
    .admin-header .brand h1 {
        font-size: 1.3rem;
    }
    .video-source-toggle {
        flex-wrap: wrap;
    }
}

/* ============================================================
   DARK MODE SUPPORT
   ============================================================ */
.dark {
    --bg-body: #0F172A;
    --bg-card: #1E293B;
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --border-color: #334155;
}

.dark .admin-login input,
.dark .admin-form input,
.dark .admin-form textarea,
.dark .admin-form select {
    background: #0F172A;
    color: #F1F5F9;
}

.dark .admin-login .login-hint {
    background: #0F172A;
}

.dark .admin-header .brand a {
    color: #94A3B8;
}

.dark .admin-header .brand a:hover {
    color: #3B82F6;
}

.dark .admin-table th {
    background: #0F172A;
}

.dark .admin-table tr:hover td {
    background: #0F172A;
}

.dark .admin-form {
    background: #0F172A;
}

.dark .admin-video-upload-area:hover {
    background: #0F172A;
}

.dark .video-source-toggle button {
    background: #0F172A;
}

.dark .video-source-toggle button:hover:not(.active) {
    background: #0F172A;
}

.dark .toast.info {
    background: #1E40AF;
}