/* Ultra-Modern Dark Digital Signage Management System */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* Muted Professional Colors */
    --primary-color: #6b7280;
    --primary-dark: #4b5563;
    --primary-light: #9ca3af;
    --secondary-color: #64748b;
    
    /* Subtle Status Colors */
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #6366f1;
    
    /* Dark Background Layers */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-glass: rgba(51, 65, 85, 0.6);
    
    /* Text Colors */
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    /* Border & Effects */
    --border-primary: #475569;
    --border-accent: #6b728088;
    --glow-primary: 0 0 15px rgba(107, 114, 128, 0.2);
    --glow-success: 0 0 15px rgba(16, 185, 129, 0.2);
    --glow-danger: 0 0 15px rgba(239, 68, 68, 0.2);
    
    /* Muted Gradients */
    --gradient-primary: linear-gradient(135deg, #6b7280 0%, #4b5563 50%, #374151 100%);
    --gradient-card: linear-gradient(145deg, #1e293b 0%, #0f172a 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.03) 100%);
    
    /* Softer Shadows */
    --shadow-glow: 0 8px 25px rgba(0, 0, 0, 0.25);
    --shadow-card: 0 10px 25px rgba(0, 0, 0, 0.2);
    --shadow-elevated: 0 20px 35px rgba(0, 0, 0, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(107, 114, 128, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(71, 85, 105, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(100, 116, 139, 0.03) 0%, transparent 50%);
    background-attachment: fixed;
}

/* Glassmorphism Backdrop */
.glass {
    background: var(--bg-glass);
    backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border-accent);
}

/* Enhanced Navigation */
.navbar {
    background: var(--bg-glass) !important;
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-accent);
    box-shadow: var(--shadow-glow);
    transition: all 0.3s ease;
}

.navbar-brand {
    font-size: 1.75rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: var(--glow-primary);
}

.nav-link {
    font-weight: 500;
    color: var(--text-secondary) !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 12px;
    margin: 0 8px;
    padding: 12px 20px !important;
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: all 0.4s ease;
    z-index: -1;
}

.nav-link:hover::before {
    left: 0;
    opacity: 0.1;
}

.nav-link:hover {
    color: var(--primary-color) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.nav-link.active {
    color: var(--primary-color) !important;
    background: var(--gradient-glass);
    border: 1px solid var(--border-accent);
    box-shadow: var(--shadow-glow);
}

/* Dropdown Menu Fix - Ensure dropdown appears above all elements */
.dropdown-menu {
    z-index: 99999 !important;
    background: var(--bg-secondary) !important;
    border: 1px solid var(--border-accent) !important;
    border-radius: 12px !important;
    box-shadow: var(--shadow-elevated) !important;
    backdrop-filter: blur(20px) !important;
    margin-top: 8px !important;
    position: absolute !important;
}

.dropdown-item {
    color: var(--text-secondary) !important;
    transition: all 0.3s ease !important;
    border-radius: 8px !important;
    margin: 4px 8px !important;
    padding: 8px 12px !important;
}

.dropdown-item:hover,
.dropdown-item:focus {
    background: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
    transform: translateX(4px) !important;
}

/* Force navbar and dropdown stacking - VERY HIGH Z-INDEX */
.navbar {
    z-index: 99998 !important;
    position: relative !important;
}

.navbar .dropdown {
    position: relative !important;
    z-index: 99997 !important;
}

.navbar .dropdown-toggle::after {
    color: var(--text-muted);
}

/* Force buttons and cards to have lower z-index */
.btn {
    z-index: 1 !important;
}

.card {
    z-index: 1 !important;
}

/* CRITICAL FIX: Force dropdown buttons above all overlays and previews */
.card .dropdown {
    position: relative !important;
    z-index: 9999 !important;
}

.card .dropdown-toggle {
    position: relative !important;
    z-index: 10000 !important;
    background-color: rgba(108, 117, 125, 0.8) !important; /* More visible background */
    backdrop-filter: blur(4px) !important;
}

.card .dropdown-menu {
    z-index: 10001 !important;
}

/* Ensure any preview overlay stays below dropdown */
.video-overlay,
.preview-overlay,
*[class*="preview"],
*[data-*="preview"] {
    z-index: 2 !important;
}

/* CRITICAL FIX: Disable pointer events on all overlays to allow clicks through */
.card .video-overlay,
.card .preview-overlay, 
.card [class*="preview"], 
.card [id*="preview"] {
    pointer-events: none !important;
}

/* Allow dropdown menu to extend beyond card boundaries */
.card-header {
    overflow: visible !important;
    position: relative;
}

/* Nuclear option: Disable all external preview overlays/tooltips */
[role="tooltip"], 
.tooltip, 
.bs-tooltip-auto, 
.tippy-box, 
[class*="preview"], 
[id*="preview"] {
    pointer-events: none !important;
}

/* Modern Cards */
.card {
    background: var(--gradient-card);
    border: 1px solid var(--border-primary);
    border-radius: 20px;
    box-shadow: var(--shadow-card);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0.6;
}

.card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-elevated);
    border-color: var(--border-accent);
}

.card-header {
    background: var(--gradient-glass);
    border-bottom: 1px solid var(--border-accent);
    font-weight: 600;
    color: var(--text-primary);
    padding: 1.5rem 2rem;
    backdrop-filter: blur(10px);
}

.card-body {
    padding: 2rem;
}

/* Futuristic Buttons */
.btn {
    border-radius: 12px;
    font-weight: 600;
    padding: 12px 24px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.9rem;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-glow);
    border: 1px solid var(--border-accent);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-elevated), var(--glow-primary);
    filter: brightness(1.1);
}

.btn-success {
    background: linear-gradient(135deg, #00ff88 0%, #00d4aa 100%);
    color: white;
    box-shadow: var(--glow-success);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-elevated), var(--glow-success);
}

.btn-warning {
    background: linear-gradient(135deg, #ffb037 0%, #ff9500 100%);
    color: white;
    box-shadow: 0 0 20px rgba(255, 176, 55, 0.3);
}

.btn-danger {
    background: linear-gradient(135deg, #ff4757 0%, #ff3838 100%);
    color: white;
    box-shadow: var(--glow-danger);
}

.btn-outline-primary {
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--gradient-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

/* Enhanced Forms */
.form-control {
    background: var(--bg-tertiary);
    border: 2px solid var(--border-primary);
    border-radius: 12px;
    padding: 15px 20px;
    color: var(--text-primary);
    transition: all 0.3s ease;
    font-weight: 500;
}

.form-control:focus {
    background: var(--bg-tertiary);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 245, 255, 0.2), var(--glow-primary);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.form-control::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

.form-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.9rem;
}

/* Subtle Status Indicators */
.status-online {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(34, 197, 94, 0.15));
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.2);
    padding: 8px 16px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.875rem;
    position: relative;
    overflow: hidden;
    animation: subtle-pulse-green 3s infinite;
}

.status-offline {
    background: rgba(124, 143, 163, 0.2);
    color: var(--text-muted);
    border: 1px solid rgba(124, 143, 163, 0.3);
    padding: 8px 16px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.875rem;
}

.status-error {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(220, 38, 38, 0.15));
    color: var(--danger-color);
    border: 1px solid rgba(239, 68, 68, 0.2);
    padding: 8px 16px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.875rem;
    animation: subtle-pulse-red 3s infinite;
}

@keyframes subtle-pulse-green {
    0%, 100% { box-shadow: 0 0 5px rgba(16, 185, 129, 0.2); }
    50% { box-shadow: 0 0 10px rgba(16, 185, 129, 0.3); }
}

@keyframes subtle-pulse-red {
    0%, 100% { box-shadow: 0 0 5px rgba(239, 68, 68, 0.2); }
    50% { box-shadow: 0 0 10px rgba(239, 68, 68, 0.3); }
}

/* Dashboard Stats Cards */
.stats-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-primary);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    min-height: 90px;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stats-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
}

.stats-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-elevated);
    border-color: var(--border-accent);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 0;
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-glow);
    flex-shrink: 0;
}

/* Enhanced Tables */
.table {
    background: var(--gradient-card);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-primary);
}

/* Empty State Styling */
.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state p {
    font-size: 1rem;
    margin-bottom: 1.5rem;
    opacity: 0.8;
}

.table th {
    background: var(--gradient-glass);
    font-weight: 700;
    color: var(--text-primary);
    border: none;
    padding: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.9rem;
}

.table td {
    color: var(--text-secondary);
    border: none;
    padding: 1.25rem;
    border-bottom: 1px solid var(--border-primary);
    font-weight: 500;
}

.table tbody tr:hover {
    background: var(--gradient-glass);
    transform: scale(1.01);
    transition: all 0.2s ease;
}

/* Modern Alerts */
.alert {
    border: none;
    border-radius: 16px;
    padding: 1.25rem 1.75rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.alert-success {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.15), rgba(0, 212, 170, 0.15));
    color: var(--success-color);
    border-left: 4px solid var(--success-color);
    box-shadow: var(--glow-success);
}

.alert-warning {
    background: linear-gradient(135deg, rgba(255, 176, 55, 0.15), rgba(255, 149, 0, 0.15));
    color: var(--warning-color);
    border-left: 4px solid var(--warning-color);
}

.alert-danger {
    background: linear-gradient(135deg, rgba(255, 71, 87, 0.15), rgba(255, 55, 56, 0.15));
    color: var(--danger-color);
    border-left: 4px solid var(--danger-color);
    box-shadow: var(--glow-danger);
}

.alert-info {
    background: linear-gradient(135deg, rgba(0, 245, 255, 0.15), rgba(55, 66, 250, 0.15));
    color: var(--primary-color);
    border-left: 4px solid var(--primary-color);
    box-shadow: var(--shadow-glow);
}

/* Login Page Revolution */
.login-container {
    min-height: 100vh;
    background: var(--bg-primary);
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(107, 114, 128, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(71, 85, 105, 0.08) 0%, transparent 50%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="75" cy="75" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="50" cy="10" r="0.3" fill="rgba(255,255,255,0.03)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.login-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-accent);
    border-radius: 24px;
    box-shadow: var(--shadow-elevated);
    backdrop-filter: blur(20px);
    max-width: 420px;
    width: 100%;
    overflow: hidden;
}

/* Media Thumbnails */
.media-thumbnail {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-primary);
    transition: all 0.3s ease;
}

.media-thumbnail:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-elevated);
}

/* Progress Bars */
.progress {
    height: 10px;
    border-radius: 50px;
    background: var(--bg-tertiary);
    overflow: hidden;
}

.progress-bar {
    background: var(--gradient-primary);
    border-radius: 50px;
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* File Upload Enhancement */
.file-upload-area {
    border: 2px dashed var(--border-accent);
    border-radius: 20px;
    padding: 4rem 2rem;
    text-align: center;
    transition: all 0.3s ease;
    background: var(--gradient-glass);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.file-upload-area::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(0, 245, 255, 0.1), transparent);
    transform: rotate(45deg);
    transition: all 0.3s ease;
    opacity: 0;
}

.file-upload-area:hover::before {
    opacity: 1;
    animation: sweep 2s infinite;
}

.file-upload-area:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

@keyframes sweep {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 6px;
    border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #00d4aa 0%, #3742fa 100%);
}

/* Loading States */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-glass);
    backdrop-filter: blur(2px);
    border-radius: inherit;
}

/* Responsive Design */
@media (max-width: 768px) {
    .card {
        border-radius: 16px;
        margin-bottom: 1.5rem;
    }
    
    .stats-card {
        padding: 1rem;
        min-height: 70px;
        gap: 0.75rem;
    }
    
    .stat-icon {
        width: 36px;
        height: 36px;
        font-size: 1.1rem;
        margin-bottom: 0;
    }
    
    .stats-card h3 {
        font-size: 1.35rem;
    }
    
    .stats-card p {
        font-size: 0.75rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.85rem;
    }
    
    .navbar-brand {
        font-size: 1.5rem;
    }
}

@media (max-width: 576px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
}

/* Enhanced Hover Effects */
.hover-lift {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-elevated);
}

/* Glow Effects */
.glow-primary {
    box-shadow: var(--glow-primary);
}

.glow-success {
    box-shadow: var(--glow-success);
}

.glow-danger {
    box-shadow: var(--glow-danger);
}

/* Text Gradients */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Horizontal Compact Stats Text */
.stats-card .stat-content {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.stats-card h3 {
    font-size: 1.75rem;
    line-height: 1.2;
    margin-bottom: 0.25rem;
    font-weight: 700;
}

.stats-card p {
    font-size: 0.85rem;
    line-height: 1.2;
    margin-bottom: 0;
    opacity: 0.8;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Modern List Group Styling */
.list-group-flush .list-group-item {
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-primary);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.list-group-flush .list-group-item:last-child {
    border-bottom: none;
}

.list-group-flush .list-group-item:hover {
    background: var(--gradient-glass);
    border-radius: 8px;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    transform: translateX(2px);
}

/* Enhanced Device/Media List Items */
.device-item, .media-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
}

.device-icon, .media-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.device-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--info-color));
    color: white;
}

.media-icon.image {
    background: linear-gradient(135deg, var(--info-color), var(--primary-color));
    color: white;
}

.media-icon.video {
    background: linear-gradient(135deg, var(--danger-color), var(--warning-color));
    color: white;
}

.item-content {
    flex-grow: 1;
    min-width: 0;
}

.item-content h6 {
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.item-content .item-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.2;
}

.item-status {
    text-align: right;
    flex-shrink: 0;
}

.item-status .item-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
    display: block;
}

/* Better Card Headers */
.card-header h5 {
    color: var(--text-primary);
    font-weight: 600;
}

.card-header .btn-outline-primary {
    font-size: 0.8rem;
    padding: 0.4rem 0.8rem;
    font-weight: 500;
}

/* Compact Button Styling for Device Actions */
.btn-compact {
    font-size: 0.75rem;
    padding: 0.35rem 0.65rem;
    white-space: nowrap;
    min-width: auto;
    font-weight: 500;
}

.btn-compact i {
    font-size: 0.7rem;
}

/* Device Action Buttons Row */
.d-flex.gap-1 {
    gap: 0.3rem;
}

.flex-nowrap {
    flex-wrap: nowrap !important;
}

@media (max-width: 768px) {
    .btn-compact {
        font-size: 0.7rem;
        padding: 0.3rem 0.5rem;
    }
    
    .btn-compact i {
        font-size: 0.65rem;
        margin-right: 0.25rem;
    }
}