/* Material Design CSS - Modern, Clean, Beautiful */

/* Prevent flickering on page load and transitions */
html {
    /* Prevent text flickering during font loading */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    /* Prevent flashing of unstyled content */
    opacity: 1;
    transition: opacity 0.15s ease-in;
}

body.loading {
    opacity: 0;
}

/* Smooth transitions for all interactive elements */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Real-time update animations */
.realtime-update {
    animation: pulse 0.3s ease-in-out;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Smooth data transitions */
.smooth-transition {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Connection status indicator */
.connection-indicator {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.connection-indicator.visible {
    opacity: 1;
    transform: translateY(0);
}

.connection-indicator.connected {
    background: #4CAF50;
    color: white;
}

.connection-indicator.connecting {
    background: #FF9800;
    color: white;
}

.connection-indicator.disconnected {
    background: #F44336;
    color: white;
}

.connection-indicator .status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
    animation: blink 1.5s infinite;
}

@keyframes blink {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.3;
    }
}


:root {
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
}

/* Light Theme (Default) */
:root,
[data-theme="light"] {
    /* Material Colors - optimized for light backgrounds */
    --primary: #1976D2;
    --primary-dark: #1565C0;
    --primary-light: #E3F2FD;
    --accent: #D81B60;
    --success: #388E3C;
    --warning: #F57C00;
    --error: #D32F2F;
    --info: #1976D2;
    
    /* Grays - balanced for light theme */
    --gray-50: #FAFAFA;
    --gray-100: #F5F5F5;
    --gray-200: #EEEEEE;
    --gray-300: #E0E0E0;
    --gray-400: #BDBDBD;
    --gray-500: #9E9E9E;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;
    --gray-900: #212121;
    
    /* Semantic Colors - improved contrast */
    --background: #F8F9FA;
    --surface: #FFFFFF;
    --text-primary: #1A1A1A;
    --text-secondary: #616161;
    
    /* Shadows */
    --shadow-1: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-2: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
    --shadow-3: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
    --shadow-4: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
}

/* Dark Theme */
[data-theme="dark"] {
    /* Material Colors - adjusted for dark theme with better contrast */
    --primary: #90CAF9;
    --primary-dark: #64B5F6;
    --primary-light: #4A90C9;
    --accent: #FF6B9D;
    --success: #81C784;
    --warning: #FFB74D;
    --error: #E57373;
    --info: #64B5F6;
    
    /* Grays - optimized for contrast on dark backgrounds */
    --gray-50: #1E1E1E;
    --gray-100: #2A2A2A;
    --gray-200: #363636;
    --gray-300: #424242;
    --gray-400: #5A5A5A;
    --gray-500: #757575;
    --gray-600: #9E9E9E;
    --gray-700: #BDBDBD;
    --gray-800: #D4D4D4;
    --gray-900: #EEEEEE;
    
    /* Semantic Colors - improved contrast ratios */
    --background: #181818;
    --surface: #242424;
    --text-primary: #EEEEEE;
    --text-secondary: #BDBDBD;
    
    /* Shadows - lighter for dark theme */
    --shadow-1: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.4);
    --shadow-2: 0 3px 6px rgba(0,0,0,0.4), 0 3px 6px rgba(0,0,0,0.5);
    --shadow-3: 0 10px 20px rgba(0,0,0,0.5), 0 6px 6px rgba(0,0,0,0.6);
    --shadow-4: 0 14px 28px rgba(0,0,0,0.6), 0 10px 10px rgba(0,0,0,0.7);
}

/* Matrix Theme */
[data-theme="matrix"] {
    /* Matrix-style colors with improved accessibility */
    --primary: #00FF41;
    --primary-dark: #00D436;
    --primary-light: #1A3A1A;
    --accent: #39FF14;
    --success: #00FF41;
    --warning: #FFFF00;
    --error: #FF3333;
    --info: #00FFAA;
    
    /* Grays - dark with subtle green tint, better contrast */
    --gray-50: #0A0F0A;
    --gray-100: #111A11;
    --gray-200: #1A251A;
    --gray-300: #233023;
    --gray-400: #2D3D2D;
    --gray-500: #3A4D3A;
    --gray-600: #4D6B4D;
    --gray-700: #669966;
    --gray-800: #80B380;
    --gray-900: #99CC99;
    
    /* Semantic Colors - much better contrast for readability */
    --background: #000000;
    --surface: #0A0F0A;
    --text-primary: #00FF41;
    --text-secondary: #80B380;
    
    /* Shadows - green glow */
    --shadow-1: 0 1px 3px rgba(0,255,65,0.2), 0 1px 2px rgba(0,0,0,0.6);
    --shadow-2: 0 3px 6px rgba(0,255,65,0.3), 0 3px 6px rgba(0,0,0,0.6);
    --shadow-3: 0 10px 20px rgba(0,255,65,0.4), 0 6px 6px rgba(0,0,0,0.7);
    --shadow-4: 0 14px 28px rgba(0,255,65,0.5), 0 10px 10px rgba(0,0,0,0.8);
}

/* Modern Dark Theme */
[data-theme="modern-dark"] {
    /* Modern dark colors with improved accessibility */
    --primary: #A89FF2;
    --primary-dark: #8B7FD6;
    --primary-light: #6B5FB6;
    --accent: #90B8DC;
    --success: #81C784;
    --warning: #FFB74D;
    --error: #E57373;
    --info: #90B8DC;
    
    /* Grays - anthracite palette with better contrast */
    --gray-50: #1A1D23;
    --gray-100: #252931;
    --gray-200: #2F3541;
    --gray-300: #3D4452;
    --gray-400: #4E5565;
    --gray-500: #676E81;
    --gray-600: #8D94A6;
    --gray-700: #A8AFBE;
    --gray-800: #C4C9D4;
    --gray-900: #E0E3E9;
    
    /* Semantic Colors - improved contrast */
    --background: #14161A;
    --surface: #1E2127;
    --text-primary: #E8EBF0;
    --text-secondary: #B5BACB;
    
    /* Shadows - subtle with color hints */
    --shadow-1: 0 1px 3px rgba(168,159,242,0.12), 0 1px 2px rgba(0,0,0,0.4);
    --shadow-2: 0 3px 6px rgba(168,159,242,0.18), 0 3px 6px rgba(0,0,0,0.5);
    --shadow-3: 0 10px 20px rgba(168,159,242,0.24), 0 6px 6px rgba(0,0,0,0.6);
    --shadow-4: 0 14px 28px rgba(168,159,242,0.3), 0 10px 10px rgba(0,0,0,0.7);
}

/* Matrix Theme - Button and icon text color overrides for better contrast */
[data-theme="matrix"] .btn-primary,
[data-theme="matrix"] .btn-success,
[data-theme="matrix"] .btn-warning {
    color: #000000;
}

[data-theme="matrix"] .stat-icon .material-icons {
    color: #000000;
}

/* Modern Dark Theme - Button and icon text color overrides for better contrast */
[data-theme="modern-dark"] .btn-primary,
[data-theme="modern-dark"] .btn-success,
[data-theme="modern-dark"] .btn-warning,
[data-theme="modern-dark"] .btn-error {
    color: #000000;
}

[data-theme="modern-dark"] .stat-icon .material-icons {
    color: #000000;
}

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* App Container */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--surface);
    box-shadow: var(--shadow-2);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 100;
}

.sidebar-header {
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border-bottom: 1px solid var(--gray-200);
}

.logo-icon {
    color: var(--primary);
    font-size: 32px !important;
}

.logo-text {
    font-size: 24px;
    font-weight: 500;
    color: var(--text-primary);
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-md) 0;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.nav-item:hover {
    background: var(--gray-50);
    color: var(--primary);
}

.nav-item.active {
    color: var(--primary);
    background: var(--primary-light);
    font-weight: 500;
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--primary);
}

.nav-item .material-icons {
    font-size: 24px;
}

.sidebar-footer {
    border-top: 1px solid var(--gray-200);
    padding: var(--spacing-md) 0;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
}

/* Top Bar */
.top-bar {
    background: var(--surface);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 50;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: background 0.2s;
}

.menu-toggle:hover {
    background: var(--gray-100);
}

.menu-toggle .material-icons {
    font-size: 24px;
}

.top-bar h2 {
    font-size: 24px;
    font-weight: 500;
    color: var(--text-primary);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
}

.user-info .material-icons {
    font-size: 32px;
}

/* Content Area */
.content {
    padding: var(--spacing-lg);
    max-width: 1400px;
    width: 100%;
}

/* Card */
.card {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-1);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    transition: box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
    box-shadow: var(--shadow-2);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 18px;
    font-weight: 500;
    color: var(--text-primary);
}

.card-content {
    padding: var(--spacing-lg);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) !important;
}

.stat-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon .material-icons {
    font-size: 32px;
    color: white;
}

.stat-icon.blue {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.stat-icon.green {
    background: linear-gradient(135deg, #84fab0 0%, #8fd3f4 100%);
}

.stat-icon.orange {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.stat-icon.purple {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
}

.stat-icon.red {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
}

.stat-info h3 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.stat-info p {
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* Stat Card Link */
.stat-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card-link .stat-card {
    display: flex;
}

.stat-card-link:hover .stat-card {
    box-shadow: var(--shadow-3);
    transform: translateY(-2px);
}

.stat-card-link:active .stat-card {
    transform: translateY(0);
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success);
}

.badge-warning {
    background: rgba(255, 152, 0, 0.1);
    color: var(--warning);
}

.badge-error {
    background: rgba(244, 67, 54, 0.1);
    color: var(--error);
}

.badge-info {
    background: rgba(33, 150, 243, 0.1);
    color: var(--info);
}

/* Status List */
.status-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.status-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    background: var(--gray-50);
}

.status-icon {
    font-size: 24px !important;
}

.status-icon.success {
    color: var(--success);
}

.status-icon.warning {
    color: var(--warning);
}

.status-icon.error {
    color: var(--error);
}

.status-icon.info {
    color: var(--primary);
}

.status-details {
    display: flex;
    flex-direction: column;
}

.status-details strong {
    color: var(--text-primary);
    font-weight: 500;
}

.status-details small {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Activity List */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    transition: background 0.2s;
}

.activity-item:hover {
    background: var(--gray-50);
}

.activity-icon {
    font-size: 24px !important;
    padding: 8px;
    border-radius: var(--radius-full);
}

.activity-icon.blue {
    background: rgba(33, 150, 243, 0.1);
    color: var(--info);
}

.activity-icon.green {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success);
}

.activity-icon.orange {
    background: rgba(255, 152, 0, 0.1);
    color: var(--warning);
}

.activity-icon.purple {
    background: rgba(156, 39, 176, 0.1);
    color: #9C27B0;
}

.activity-details {
    display: flex;
    flex-direction: column;
}

.activity-details strong {
    color: var(--text-primary);
    font-weight: 500;
}

.activity-details small {
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 2px;
}

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

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

thead {
    background: var(--gray-50);
}

th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

td {
    padding: var(--spacing-md);
    border-top: 1px solid var(--gray-200);
    color: var(--text-primary);
}

tr:hover {
    background: var(--gray-50);
}

/* Button */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    box-shadow: var(--shadow-1);
}

.btn:hover {
    box-shadow: var(--shadow-2);
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-1);
}

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

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

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

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

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

.btn-secondary {
    background: var(--gray-200);
    color: var(--text-primary);
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-full);
}

/* Form Elements */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 14px;
    transition: all 0.2s;
    background: var(--surface);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.1);
}

.form-control::placeholder {
    color: var(--gray-400);
}

select.form-control {
    cursor: pointer;
}

/* Sidebar Overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
    opacity: 0;
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .top-bar h2 {
        font-size: 20px;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }

.flex {
    display: flex;
}

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

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

/* Modal Overlay */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease-out;
}

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

/* Modal Dialog */
.modal-dialog {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-4);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideDown 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 20px;
    font-weight: 500;
    color: var(--text-primary);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    transition: all 0.2s;
}

.modal-close:hover {
    background: var(--gray-100);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
}

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

/* Confirmation Modal */
.modal-confirmation .modal-body {
    text-align: center;
    padding: var(--spacing-xl);
}

.modal-confirmation .modal-icon {
    font-size: 64px !important;
    color: var(--warning);
    margin-bottom: var(--spacing-md);
}

.modal-confirmation .modal-message {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.modal-confirmation .modal-footer {
    justify-content: center;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Theme and Language Selector Styles */
.top-bar-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.selector-wrapper {
    position: relative;
}

.selector-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.selector-btn:hover {
    background: var(--gray-200);
    border-color: var(--gray-400);
}

.selector-btn .material-icons {
    font-size: 20px;
}

.selector-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--surface);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-3);
    min-width: 200px;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
}

.selector-dropdown.active {
    max-height: 400px;
    opacity: 1;
    visibility: visible;
}

.selector-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    color: var(--text-primary);
    cursor: pointer;
    transition: background 0.2s;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-size: 14px;
}

.selector-option:hover {
    background: var(--gray-100);
}

.selector-option.active {
    background: var(--primary-light);
    color: var(--primary-dark);
    font-weight: 500;
}

.selector-option .material-icons {
    font-size: 20px;
}

.theme-preview {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--gray-300);
}

.theme-preview.light {
    background: linear-gradient(135deg, #FFFFFF 0%, #F5F7FA 100%);
}

.theme-preview.dark {
    background: linear-gradient(135deg, #1E1E1E 0%, #121212 100%);
}

.theme-preview.matrix {
    background: linear-gradient(135deg, #001100 0%, #00FF00 100%);
}

.theme-preview.modern-dark {
    background: linear-gradient(135deg, #1A1D23 0%, #8B7FD6 50%, #7D9FC5 100%);
}

.user-info {
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background 0.2s;
}

.user-info:hover {
    background: var(--gray-100);
}

/* Real-time update animation for stat cards */
.stat-card.realtime-update {
    animation: statPulse 0.3s ease-in-out;
}

@keyframes statPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
}

/* Ensure stat cards have smooth transitions */
.stat-card,
.stat-card-link .stat-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card:hover,
.stat-card-link:hover .stat-card {
    transform: translateY(-2px);
}