/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Sky Blue Theme Colors */
    --primary-color: #87CEEB;
    --primary-dark: #4682B4;
    --primary-light: #B0E0E6;
    --secondary-color: #5DADE2;
    --accent-color: #3498DB;
    
    /* Background Colors */
    --bg-primary: #F0F8FF;
    --bg-secondary: #E6F3FF;
    --bg-card: #FFFFFF;
    --bg-sidebar: #2C3E50;
    --bg-header: #FFFFFF;
    
    /* Text Colors */
    --text-primary: #2C3E50;
    --text-secondary: #5A6C7D;
    --text-muted: #8E9BA8;
    --text-white: #FFFFFF;
    
    /* Status Colors */
    --success-color: #2ECC71;
    --warning-color: #F39C12;
    --error-color: #E74C3C;
    --info-color: #3498DB;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    
    /* Borders */
    --border-color: #E1E8ED;
    --border-radius-sm: 6px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Layout */
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 80px;
    --header-height: 80px;
}

/* Dark Theme Variables */
[data-theme="dark"] {
    --bg-primary: #1A1A1A;
    --bg-secondary: #2D2D2D;
    --bg-card: #3D3D3D;
    --bg-sidebar: #1E1E1E;
    --bg-header: #2D2D2D;
    
    --text-primary: #FFFFFF;
    --text-secondary: #B3B3B3;
    --text-muted: #808080;
    
    --border-color: #404040;
}

/* Base Styles */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
    color: var(--text-white);
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--text-white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

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

.loading-content h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.loading-content p {
    opacity: 0.8;
    font-size: 1rem;
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--bg-sidebar);
    color: var(--text-white);
    transform: translateX(0);
    transition: transform var(--transition-normal), width var(--transition-normal);
    z-index: 1000;
    overflow: hidden;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar.mobile-hidden {
    transform: translateX(-100%);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    height: var(--header-height);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: opacity var(--transition-normal);
}

.sidebar.collapsed .logo span {
    display: none;
}

.logo i {
    font-size: 1.5rem;
    color: var(--primary-light);
}

.logo span {
    font-size: 1.25rem;
    font-weight: 700;
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-white);
    font-size: 1.2rem;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-fast);
}

.sidebar-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.sidebar-menu {
    padding: var(--spacing-md) 0;
    flex: 1;
}

.sidebar-menu ul {
    list-style: none;
}

.sidebar-menu li {
    margin-bottom: var(--spacing-xs);
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all var(--transition-fast);
    border-radius: 0 25px 25px 0;
    margin-right: var(--spacing-md);
}

.sidebar-menu a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-white);
}

.sidebar-menu li.active a {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    color: var(--text-white);
}

.sidebar-menu i {
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

.sidebar.collapsed .sidebar-menu a span {
    display: none;
}

.sidebar-footer {
    padding: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.bot-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--error-color);
    animation: pulse 2s infinite;
}

.status-indicator.healthy {
    background-color: var(--success-color);
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin-left var(--transition-normal);
    background-color: var(--bg-primary);
}

.sidebar.collapsed + .main-content {
    margin-left: var(--sidebar-collapsed-width);
}

/* Header */
.header {
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    padding: 0 var(--spacing-lg);
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.mobile-sidebar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius-sm);
}

.mobile-sidebar-toggle:hover {
    background-color: var(--bg-secondary);
}

#page-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-stats {
    display: flex;
    gap: var(--spacing-md);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.stat-item i {
    color: var(--primary-color);
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-icon {
    background: none;
    border: none;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1.1rem;
}

.btn-icon:hover {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
}

/* Content Area */
.content {
    padding: var(--spacing-lg);
    max-width: 1400px;
    margin: 0 auto;
}

.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeInUp 0.3s ease;
}

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

.page-header {
    margin-bottom: var(--spacing-lg);
}

.page-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.page-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius-md);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 1.5rem;
}

.stat-content {
    flex: 1;
}

.stat-content h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.stat-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.stat-trend {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius-sm);
}

.stat-trend.positive {
    color: var(--success-color);
    background-color: rgba(46, 204, 113, 0.1);
}

.stat-trend.negative {
    color: var(--error-color);
    background-color: rgba(231, 76, 60, 0.1);
}

.stat-trend.neutral {
    color: var(--text-secondary);
    background-color: var(--bg-secondary);
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.chart-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.chart-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-controls {
    display: flex;
    gap: var(--spacing-xs);
}

.btn-small {
    padding: 0.25rem 0.75rem;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-small:hover,
.btn-small.active {
    background: var(--primary-color);
    color: var(--text-white);
    border-color: var(--primary-color);
}

.chart-container {
    position: relative;
    height: 300px;
}

/* Status Grid */
.status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.status-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.status-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.status-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.status-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.status-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    background: var(--bg-secondary);
}

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

/* Activity List */
.activity-list {
    max-height: 300px;
    overflow-y: auto;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-dark);
    font-size: 0.9rem;
}

.activity-content {
    flex: 1;
}

.activity-title {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.activity-time {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Error Summary */
.error-summary {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.error-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    background: rgba(231, 76, 60, 0.1);
}

.error-count {
    background: var(--error-color);
    color: var(--text-white);
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: var(--spacing-md);
    right: var(--spacing-md);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    animation: slideInRight 0.3s ease;
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.warning {
    border-left: 4px solid var(--warning-color);
}

.toast.error {
    border-left: 4px solid var(--error-color);
}

.toast.info {
    border-left: 4px solid var(--info-color);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-white);
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.95rem;
}

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

/* Responsive Design */
@media (max-width: 1200px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 100%;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
    }
    
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.mobile-visible {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .mobile-sidebar-toggle {
        display: block;
    }
    
    .header {
        padding: 0 var(--spacing-md);
    }
    
    .header-stats {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .status-grid {
        grid-template-columns: 1fr;
    }
    
    .content {
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .stats-grid {
        gap: var(--spacing-sm);
    }
    
    .stat-card {
        padding: var(--spacing-sm);
    }
    
    .chart-container {
        height: 250px;
    }
    
    .toast {
        min-width: 280px;
    }
}