/* CSS Variables for consistent theming */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #8b5cf6;
    --secondary-dark: #7c3aed;
    --accent-color: #06b6d4;
    --accent-light: #22d3ee;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --dark: #1e293b;
    --gray-dark: #475569;
    --gray: #64748b;
    --gray-light: #e2e8f0;
    --gray-lighter: #f1f5f9;
    --white: #ffffff;
    
    /* Glass effect colors */
    --glass-bg: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: rgba(0, 0, 0, 0.1);
    
    /* Spacing system based on 8px */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 40px;
    --space-3xl: 48px;
    --space-4xl: 64px;
    
    /* Typography scale */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    --text-5xl: 3rem;
    
    /* Font weights */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    /* Shadows - enhanced elevation system */
    --shadow-xs: 0 0 0 1px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-3xl: 32px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Dark mode variables */
[data-theme="dark"] {
    --glass-bg: rgba(30, 41, 59, 0.95);
    --glass-border: rgba(148, 163, 184, 0.2);
    --white: #0f172a;
    --gray-lighter: #1e293b;
    --gray-light: #334155;
    --gray: #94a3b8;
    --dark: #f1f5f9;
    --shadow-glow: 0 0 30px rgba(139, 92, 246, 0.4);
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    line-height: 1.6;
    color: var(--dark);
    position: relative;
    overflow-x: hidden;
}

/* Animated gradient background */
@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 200%;
    height: 200%;
    background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    opacity: 0.3;
    z-index: 0;
}

/* Floating particles animation */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    z-index: 1;
}

.particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: float 20s infinite linear;
}

@keyframes float {
    from {
        transform: translateY(100vh) rotate(0deg);
        opacity: 1;
    }
    to {
        transform: translateY(-100vh) rotate(360deg);
        opacity: 0;
    }
}

/* Dashboard Layout */
.dashboard {
    padding: var(--space-lg);
    max-width: 1600px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
    animation: fadeInUp 0.6s ease-out;
}

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

/* Glass morphism card */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-base);
}

.glass-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
}

/* Header with enhanced design */
.header {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: var(--space-xl) var(--space-2xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    margin-bottom: var(--space-2xl);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--glass-border);
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    animation: shimmer 3s ease-in-out infinite;
}

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

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.header h1 {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.header h1 i {
    -webkit-text-fill-color: var(--primary-color);
}

/* Enhanced buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    white-space: nowrap;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), #dc2626);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

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

.btn-ghost:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3);
}

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

/* Cards with enhanced design */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--glass-border);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-slow);
    pointer-events: none;
}

.card:hover::before {
    opacity: 0.05;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
}

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

.card-title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--dark);
    margin: 0;
}

.card-body {
    color: var(--gray-dark);
}

/* Enhanced form controls */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--gray-dark);
}

.form-control {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-base);
    border: 2px solid var(--gray-light);
    border-radius: var(--radius-lg);
    background: var(--white);
    transition: all var(--transition-base);
    outline: none;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-control:hover {
    border-color: var(--gray);
}

/* Enhanced badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all var(--transition-fast);
}

.badge-success {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: var(--white);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.badge-danger {
    background: linear-gradient(135deg, var(--danger-color), #dc2626);
    color: var(--white);
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

.badge-warning {
    background: linear-gradient(135deg, var(--warning-color), #d97706);
    color: var(--white);
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.badge-info {
    background: linear-gradient(135deg, var(--info-color), #2563eb);
    color: var(--white);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--gray-light);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

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

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-content {
    background: var(--white);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    text-align: center;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--space-md);
    border: 4px solid var(--gray-light);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Enhanced modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    z-index: 1000;
    animation: fadeIn var(--transition-base);
}

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

.modal-content {
    background: var(--white);
    border-radius: var(--radius-2xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-2xl);
    animation: slideUp var(--transition-spring);
}

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

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

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

.modal-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-semibold);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--text-2xl);
    cursor: pointer;
    color: var(--gray);
    transition: color var(--transition-fast);
}

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

.modal-body {
    padding: var(--space-xl);
}

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

/* Enhanced alerts */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    animation: slideInRight var(--transition-spring);
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.alert-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.05));
    border: 1px solid var(--success-color);
    color: var(--success-color);
}

.alert-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(239, 68, 68, 0.05));
    border: 1px solid var(--danger-color);
    color: var(--danger-color);
}

.alert-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(245, 158, 11, 0.05));
    border: 1px solid var(--warning-color);
    color: var(--warning-color);
}

.alert-info {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(59, 130, 246, 0.05));
    border: 1px solid var(--info-color);
    color: var(--info-color);
}

/* Enhanced grid system */
.grid {
    display: grid;
    gap: var(--space-xl);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Bot cards with enhanced design */
.bot-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--glass-border);
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.bot-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.bot-card:hover::after {
    transform: scaleX(1);
}

.bot-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
}

.bot-avatar {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    color: var(--white);
    margin-bottom: var(--space-md);
    box-shadow: var(--shadow-lg);
}

.bot-name {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-sm);
    color: var(--dark);
}

.bot-username {
    color: var(--gray);
    font-size: var(--text-sm);
    margin-bottom: var(--space-md);
}

.bot-stats {
    display: flex;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--gray-light);
}

.bot-stat {
    display: flex;
    flex-direction: column;
}

.bot-stat-value {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--primary-color);
}

.bot-stat-label {
    font-size: var(--text-xs);
    color: var(--gray);
    text-transform: uppercase;
}

/* Enhanced tabs */
.tabs {
    display: flex;
    gap: var(--space-sm);
    border-bottom: 2px solid var(--gray-light);
    margin-bottom: var(--space-xl);
    overflow-x: auto;
}

.tab {
    padding: var(--space-md) var(--space-lg);
    background: none;
    border: none;
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--gray);
    cursor: pointer;
    position: relative;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.tab::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.tab:hover {
    color: var(--dark);
}

.tab.active {
    color: var(--primary-color);
}

.tab.active::after {
    transform: scaleX(1);
}

.tab-content {
    animation: fadeIn var(--transition-base);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* Enhanced tables */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.table {
    width: 100%;
    background: var(--white);
    border-collapse: collapse;
}

.table th {
    background: linear-gradient(135deg, var(--gray-lighter), var(--gray-light));
    padding: var(--space-md);
    text-align: left;
    font-weight: var(--font-semibold);
    color: var(--dark);
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    padding: var(--space-md);
    border-top: 1px solid var(--gray-light);
    color: var(--gray-dark);
}

.table tr {
    transition: background var(--transition-fast);
}

.table tr:hover {
    background: var(--gray-lighter);
}

/* Conversation messages with enhanced design */
.conversation-list {
    max-height: 600px;
    overflow-y: auto;
    padding: var(--space-md);
    background: var(--gray-lighter);
    border-radius: var(--radius-lg);
}

.message {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    animation: messageSlide var(--transition-base);
}

@keyframes messageSlide {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: var(--font-semibold);
    flex-shrink: 0;
}

.message-content {
    flex: 1;
    background: var(--white);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.message-sender {
    font-weight: var(--font-semibold);
    color: var(--dark);
}

.message-time {
    font-size: var(--text-xs);
    color: var(--gray);
}

.message-text {
    color: var(--gray-dark);
    line-height: 1.6;
}

.message.user .message-content {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(99, 102, 241, 0.05));
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.message.bot .message-content {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(139, 92, 246, 0.05));
    border: 1px solid rgba(139, 92, 246, 0.2);
}

/* Responsive design */
@media (max-width: 768px) {
    .dashboard {
        padding: var(--space-md);
    }
    
    .header {
        padding: var(--space-lg);
    }
    
    .header h1 {
        font-size: var(--text-2xl);
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .bot-stats {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .tabs {
        flex-wrap: nowrap;
        overflow-x: scroll;
        -webkit-overflow-scrolling: touch;
    }
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-lighter);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(var(--primary-dark), var(--secondary-dark));
}

/* Tooltip */
.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--dark);
    color: var(--white);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
    margin-bottom: var(--space-xs);
}

.tooltip:hover::after {
    opacity: 1;
}

/* Pulse animation for notifications */
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(99, 102, 241, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* Skeleton loader */
.skeleton {
    background: linear-gradient(90deg, var(--gray-lighter) 25%, var(--gray-light) 50%, var(--gray-lighter) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Theme toggle */
.theme-toggle {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-base);
    z-index: 100;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
}