/* Independent CSS for monitoring.html */
/* Based on main-universal.css with monitoring-specific styles */

/* ===== CSS VARIABLES (DESIGN TOKENS) ===== */
:root {
    /* Color Palette - Modern Blue Theme */
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;
    --secondary-color: #64748b;
    --secondary-hover: #475569;

    /* Status Colors */
    --success-color: #10b981;
    --success-light: #d1fae5;
    --warning-color: #f59e0b;
    --warning-light: #fef3c7;
    --danger-color: #ef4444;
    --danger-light: #fee2e2;
    --info-color: #06b6d4;
    --info-light: #cffafe;

    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    /* Background Colors */
    --bg-primary: var(--white);
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
    --bg-dark: var(--gray-800);

    /* Text Colors */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-muted: var(--gray-400);
    --text-white: var(--white);

    /* Border & Shadow */
    --border-color: var(--gray-200);
    --border-radius-sm: 6px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* Layout */
    --navbar-height: 64px;
    --max-width: 1280px;
    --max-width-sm: 640px;
    --max-width-md: 768px;
    --max-width-lg: 1024px;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: ui-monospace, 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;

    --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: 1.875rem;
    --text-4xl: 2.25rem;

    /* Animations */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;

    /* Z-index layers */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ===== RESET & BASE STYLES ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    line-height: 1.6;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
}

input,
button,
textarea,
select {
    font: inherit;
}

button {
    cursor: pointer;
}

a {
    color: inherit;
    text-decoration: none;
}

ul,
ol {
    list-style: none;
}

/* ===== UNIVERSAL LAYOUT COMPONENTS ===== */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

.main-content {
    padding-top: calc(var(--navbar-height) + var(--spacing-4));
    min-height: calc(100vh - var(--navbar-height));
}

/* ===== NAVBAR STYLES ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-fixed);
}

.nav-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-4);
    max-width: var(--max-width);
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.nav-logo {
    width: 32px;
    height: 32px;
}

.nav-brand h1 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--spacing-2);
}

.nav-menu {
    display: flex;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-6);
}

.nav-link {
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
    padding: var(--spacing-2) 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--text-sm);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-5);
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    font-size: var(--text-sm);
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
}

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

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

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

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

.btn-sm {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--text-xs);
}

/* ===== MONITORING PAGE SPECIFIC STYLES ===== */

/* Monitoring Page Body */
.monitoring-page {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    min-height: 100vh;
}

/* Monitoring Header */
.monitoring-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    padding: 2rem 0;
    margin-bottom: 2rem;
    box-shadow: 0 4px 20px rgba(0, 102, 204, 0.3);
}

.monitoring-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.monitoring-header p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 0;
}

/* Monitoring Controls */
.monitoring-controls {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 102, 204, 0.1);
}

.controls-grid {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    gap: 1.5rem;
    align-items: center;
}

.auto-refresh-toggle {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    color: var(--text-primary);
}

.toggle-switch {
    position: relative;
    width: 50px;
    height: 24px;
    background: #ddd;
    border-radius: 12px;
    transition: background 0.3s ease;
    cursor: pointer;
    user-select: none;
}

.toggle-switch.active {
    background: var(--success-color);
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: transform 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-switch.active::after {
    transform: translateX(26px);
}

.refresh-interval {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    color: var(--text-primary);
}

.interval-select {
    padding: 0.5rem 1rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.interval-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.last-update {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.update-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.update-time {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 600;
}

.refresh-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 102, 204, 0.3);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.refresh-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 102, 204, 0.4);
}

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

.refresh-icon {
    transition: transform 0.5s ease;
}

.refresh-btn.loading .refresh-icon {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* Monitoring Grid */
.monitoring-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.monitoring-overview {
    margin-bottom: 2rem;
}

/* System Health Card */
.system-health-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 102, 204, 0.1);
    transition: all 0.3s ease;
}

.system-health-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

.health-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.health-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.health-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.8rem;
}

.health-status.healthy {
    background: rgba(40, 167, 69, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(40, 167, 69, 0.2);
}

.health-status.unhealthy {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(220, 53, 69, 0.2);
}

.health-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.metric-item {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    padding: 1.25rem;
    border-radius: 12px;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.metric-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s ease;
}

.metric-item:hover::before {
    left: 100%;
}

.metric-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.metric-label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    margin-bottom: 0.5rem;
}

.metric-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.metric-value {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    font-weight: 500;
}

.metric-description {
    font-size: var(--text-xs);
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Broker Summary Card */
.broker-summary-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 102, 204, 0.1);
    transition: all 0.3s ease;
}

.broker-summary-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

.summary-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.summary-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.summary-count {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.status-breakdown {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.status-item {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    padding: 1rem;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
}

.status-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.status-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.status-icon {
    font-size: 1.2rem;
}

.status-count {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* Performance Section */
.performance-section {
    margin-bottom: 2rem;
}

.performance-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 102, 204, 0.1);
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 1.5rem 0;
}

.performance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.performance-item {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.performance-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.performance-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.performance-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Brokers Section */
.brokers-section {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 102, 204, 0.1);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.view-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.filter-buttons {
    display: flex;
    gap: 0.5rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border: 2px solid #e9ecef;
    background: white;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.9rem;
}

.filter-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

.view-toggle {
    display: flex;
    gap: 0.25rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    overflow: hidden;
}

.view-btn {
    padding: 0.5rem 0.75rem;
    border: none;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.view-btn:hover {
    background: #f8f9fa;
}

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

/* Broker Grid */
.broker-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.broker-monitor-card {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    border: 2px solid transparent;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.broker-monitor-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--success-color), var(--info-color));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.broker-monitor-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    border-color: var(--primary-color);
}

.broker-monitor-card:hover::before {
    opacity: 1;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.broker-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.broker-status {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.broker-status.online {
    background: var(--success-light);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.broker-status.offline {
    background: var(--danger-light);
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

.broker-status.warning {
    background: var(--warning-light);
    color: var(--warning-color);
    border: 1px solid var(--warning-color);
}

.broker-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.75rem;
    background: rgba(0, 0, 0, 0.02);
    border-radius: 8px;
    border-left: 3px solid var(--primary-color);
}

.info-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-value {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 600;
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.last-check {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.card-actions {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    padding: 0.375rem 0.75rem;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.8rem;
    font-weight: 500;
}

.action-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--primary-light);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: var(--z-modal);
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.3s ease;
}

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

.modal-content {
    background: white;
    border-radius: 16px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: slideIn 0.3s ease;
}

.modal-header {
    padding: 2rem 2rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.modal-body {
    padding: 2rem;
}

.modal-footer {
    padding: 1rem 2rem 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

.close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: color 0.3s ease;
}

.close-btn:hover {
    color: var(--text-primary);
}

/* Loading States */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideIn {
    from {
        transform: scale(0.9) translateY(-20px);
        opacity: 0;
    }

    to {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

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

    100% {
        background-position: 200% 0;
    }
}

/* ===== RESPONSIVE DESIGN ===== */

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: var(--navbar-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--navbar-height));
        background: var(--bg-primary);
        transition: left 0.3s ease;
        padding: var(--spacing-4);
        border-right: 1px solid var(--border-color);
        z-index: var(--z-dropdown);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-links {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .nav-link {
        padding: var(--spacing-4) 0;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-actions {
        margin-top: var(--spacing-4);
        padding-top: var(--spacing-4);
        border-top: 1px solid var(--border-color);
    }
}

/* Tablet and Mobile Responsive */
@media (max-width: 1024px) {
    .monitoring-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .controls-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        text-align: center;
    }

    .auto-refresh-toggle,
    .refresh-interval {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-3);
    }

    .monitoring-header {
        padding: 1.5rem 0;
        text-align: center;
    }

    .monitoring-header h1 {
        font-size: 2rem;
    }

    .monitoring-header p {
        font-size: 1rem;
    }

    .monitoring-controls {
        padding: 1.25rem;
    }

    .controls-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .system-health-card,
    .broker-summary-card,
    .performance-card,
    .brokers-section {
        padding: 1.5rem;
    }

    .health-metrics {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .status-breakdown {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .performance-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .section-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .view-controls {
        justify-content: center;
    }

    .filter-buttons {
        flex-wrap: wrap;
        justify-content: center;
    }

    .broker-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .broker-info {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .card-footer {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
    }

    .card-actions {
        justify-content: center;
        width: 100%;
    }

    .modal-content {
        width: 95%;
        margin: 1rem;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .monitoring-header {
        padding: 1.25rem 0;
    }

    .monitoring-header h1 {
        font-size: 1.75rem;
    }

    .monitoring-controls {
        padding: 1rem;
    }

    .system-health-card,
    .broker-summary-card,
    .performance-card,
    .brokers-section {
        padding: 1.25rem;
    }

    .filter-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }

    .broker-monitor-card {
        padding: 1.25rem;
    }

    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .action-btn {
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
    }
}

/* ===== DARK MODE SUPPORT ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1a202c;
        --bg-secondary: #2d3748;
        --bg-tertiary: #4a5568;
        --text-primary: #f7fafc;
        --text-secondary: #e2e8f0;
        --text-muted: #a0aec0;
        --border-color: #4a5568;
    }

    .monitoring-page {
        background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    }

    .monitoring-controls,
    .system-health-card,
    .broker-summary-card,
    .performance-card,
    .brokers-section,
    .broker-monitor-card {
        background: var(--bg-primary);
        border-color: var(--border-color);
    }

    .metric-item,
    .performance-item,
    .status-item {
        background: linear-gradient(135deg, #2d3748, #4a5568);
    }

    .interval-select,
    .filter-btn,
    .view-btn,
    .action-btn {
        background: var(--bg-tertiary);
        border-color: var(--border-color);
        color: var(--text-primary);
    }

    .info-item {
        background: rgba(255, 255, 255, 0.05);
        border-color: var(--border-color);
    }

    .modal-content {
        background: var(--bg-primary);
        color: var(--text-primary);
    }

    .modal-header,
    .modal-footer {
        border-color: var(--border-color);
    }

    .navbar {
        background: var(--bg-primary);
        border-color: var(--border-color);
    }
}

/* ===== ACCESSIBILITY IMPROVEMENTS ===== */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
.btn:focus,
.nav-link:focus,
.interval-select:focus,
.filter-btn:focus,
.view-btn:focus,
.action-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
        --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.8);
        --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.8);
    }

    .btn,
    .metric-item,
    .performance-item,
    .broker-monitor-card {
        border: 2px solid var(--text-primary);
    }
}

/* Print styles */
@media print {

    .navbar,
    .monitoring-controls,
    .card-actions,
    .modal {
        display: none;
    }

    .main-content {
        padding-top: 0;
    }

    .monitoring-header {
        background: none;
        color: var(--text-primary);
        box-shadow: none;
    }

    .system-health-card,
    .broker-summary-card,
    .performance-card,
    .brokers-section,
    .broker-monitor-card {
        box-shadow: none;
        border: 1px solid var(--border-color);
    }
}