/* =============================================
   Audiovisual Admin - Styles
   Premium dark theme with glassmorphism
   ============================================= */

:root {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-card: #16213e;
    --bg-card-hover: #1a2744;
    --bg-glass: rgba(26, 26, 46, 0.8);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(99, 102, 241, 0.3);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* ---- Login ---- */
.login-body {
    background: var(--bg-primary);
    background-image: 
        radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(99, 102, 241, 0.04) 0%, transparent 50%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px 36px;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-icon {
    width: 72px;
    height: 72px;
    background: var(--accent-gradient);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: white;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.login-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.login-footer {
    text-align: center;
    margin-top: 20px;
    color: var(--text-muted);
    font-size: 0.8rem;
}

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

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper svg {
    position: absolute;
    left: 14px;
    color: var(--text-muted);
    pointer-events: none;
}

.input-wrapper input,
.input-wrapper select,
.input-wrapper textarea {
    width: 100%;
    padding: 12px 14px 12px 44px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

input, select, textarea {
    width: 100%;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

input:focus, select:focus, textarea:focus,
.input-wrapper input:focus,
.input-wrapper select:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

input::placeholder, textarea::placeholder {
    color: var(--text-muted);
}

/* ---- Alerts ---- */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.alert-error {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.alert-success {
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #6ee7b7;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.12);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #fcd34d;
}

.alert-info {
    background: rgba(59, 130, 246, 0.12);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #93c5fd;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 2px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-glow);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.25);
}

.btn-success {
    background: rgba(16, 185, 129, 0.15);
    color: #6ee7b7;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    background: rgba(16, 185, 129, 0.25);
}

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

.btn-block {
    width: 100%;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-sm);
}

/* ---- Layout ---- */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar-brand {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-brand .brand-icon {
    width: 40px;
    height: 40px;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.sidebar-brand h2 {
    font-size: 1.1rem;
    font-weight: 600;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.nav-item.active {
    background: rgba(99, 102, 241, 0.12);
    color: var(--accent-primary);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.sidebar-footer {
    padding: 16px 12px;
    border-top: 1px solid var(--border-color);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 32px;
    min-height: 100vh;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
}

.page-header h1 {
    font-size: 1.6rem;
    font-weight: 700;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 4px;
}

/* ---- Cards ---- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
}

.card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.card-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

/* ---- Grid ---- */
.grid {
    display: grid;
    gap: 20px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---- Stats Cards ---- */
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon.purple { background: rgba(99, 102, 241, 0.15); color: var(--accent-primary); }
.stat-icon.green { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.stat-icon.blue { background: rgba(59, 130, 246, 0.15); color: var(--info); }
.stat-icon.orange { background: rgba(245, 158, 11, 0.15); color: var(--warning); }

.stat-info h4 {
    font-size: 1.5rem;
    font-weight: 700;
}

.stat-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ---- Tables ---- */
.table-container {
    overflow-x: auto;
}

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

table th {
    text-align: left;
    padding: 12px 16px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
}

table td {
    padding: 14px 16px;
    font-size: 0.9rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

/* ---- Status Badge ---- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    gap: 5px;
}

.badge-active {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

.badge-inactive {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.badge-online {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

.badge-offline {
    background: rgba(100, 116, 139, 0.15);
    color: var(--text-muted);
}

.badge::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

/* ---- Modal ---- */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.3s ease;
}

.modal-lg {
    max-width: 900px;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.15rem;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 1.2rem;
}

.modal-close:hover {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* ---- Pi Card (Dashboard) ---- */
.pi-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    transition: var(--transition);
    cursor: pointer;
}

.pi-card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.pi-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.pi-card-header h4 {
    font-size: 1rem;
    font-weight: 600;
}

.pi-card-info {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.pi-card-info span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.pi-card-actions {
    display: flex;
    gap: 8px;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
}

/* ---- Video Item ---- */
.video-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.video-item:hover {
    border-color: var(--border-glow);
}

.video-item .video-thumb {
    width: 80px;
    height: 50px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    flex-shrink: 0;
}

.video-item .video-info {
    flex: 1;
}

.video-item .video-info h5 {
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 3px;
}

.video-item .video-info p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.video-item .video-actions {
    display: flex;
    gap: 6px;
}

/* ---- Editor Panel ---- */
.html-editor {
    width: 100%;
    min-height: 300px;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.9rem;
    resize: vertical;
}

.preview-panel {
    background: white;
    color: #333;
    padding: 20px;
    border-radius: var(--radius-md);
    min-height: 200px;
    border: 1px solid var(--border-color);
}

/* ---- File Upload ---- */
.file-upload {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.file-upload:hover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

.file-upload svg {
    color: var(--text-muted);
    margin-bottom: 10px;
}

.file-upload p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.file-upload .file-types {
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: 6px;
}

/* ---- Loading/Spinner ---- */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ---- Utilities ---- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.d-flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-1 { flex: 1; }
.w-100 { width: 100%; }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .main-content { margin-left: 0; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ---- Toggle Switch ---- */
.toggle {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    transition: var(--transition);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: white;
    top: 3px;
    left: 3px;
    transition: var(--transition);
}

.toggle input:checked + .toggle-slider {
    background: var(--accent-primary);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(20px);
}

/* ---- Drag Handle ---- */
.drag-handle {
    cursor: grab;
    color: var(--text-muted);
    padding: 4px;
}

.drag-handle:active {
    cursor: grabbing;
}

/* ---- Empty State ---- */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state svg {
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 0.9rem;
    max-width: 400px;
    margin: 0 auto;
}