/* Professional Financial UI Design System */

/* Font Awesome Fallback */
.fas, .far, .fab, .fal, .fad {
    font-family: "Font Awesome 6 Free", "Font Awesome 6 Brands", sans-serif;
}

/* Fallback for missing Font Awesome icons */
.fas:before, .far:before, .fab:before, .fal:before, .fad:before {
    content: attr(data-fallback);
}

/* Specific fallbacks for common icons */
.fa-home:before { content: "🏠"; }
.fa-chart-line:before { content: "📈"; }
.fa-calculator:before { content: "🧮"; }
.fa-tachometer-alt:before { content: "📊"; }
.fa-newspaper:before { content: "📰"; }
.fa-chart-area:before { content: "📊"; }
.fa-cog:before { content: "⚙️"; }

:root {
    /* Primary Color Palette - Professional Dark Theme */
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-tertiary: #1f2937;
    --bg-card: #1e293b;
    --bg-elevated: #374151;
    --bg-glass: rgba(31, 41, 55, 0.8);
    
    /* Border & Divider Colors */
    --border-primary: #374151;
    --border-secondary: #4b5563;
    --border-accent: #6b7280;
    --divider: #374151;
    --border-color: #374151; /* alias for consistency */
    
    /* Text Colors - High Contrast */
    --text-primary: #f9fafb;
    --text-secondary: #e5e7eb;
    --text-tertiary: #d1d5db;
    --text-muted: #9ca3af;
    --text-disabled: #6b7280;
    
    /* Brand Colors - Financial Blue Theme */
    --brand-primary: #1e40af;
    --brand-secondary: #3b82f6;
    --brand-accent: #60a5fa;
    --brand-light: #93c5fd;
    
    /* Status Colors */
    --success: #059669;
    --success-light: #10b981;
    --warning: #d97706;
    --warning-light: #f59e0b;
    --danger: #dc2626;
    --danger-light: #ef4444;
    --info: #0284c7;
    --info-light: #0ea5e9;
    
    /* Chart Colors */
    --chart-primary: #3b82f6;
    --chart-secondary: #10b981;
    --chart-tertiary: #f59e0b;
    --chart-quaternary: #ef4444;
    --chart-quinary: #8b5cf6;
    
    /* Shadows & Effects */
    --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(59, 130, 246, 0.3);
    --shadow: 0 4px 10px rgba(0,0,0,0.25); /* alias */
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    --border-radius: 16px; /* alias for consistency */
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Transitions */
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Typography */
    --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;
}

/* Light Theme Overrides */
[data-theme="light"] {
    --bg-primary: #f5f7fb;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f3f4f6;
    --bg-card: #ffffff;
    --bg-elevated: #f8fafc;
    --bg-glass: rgba(255, 255, 255, 0.8);

    --border-primary: #e5e7eb;
    --border-secondary: #d1d5db;
    --border-accent: #9ca3af;
    --divider: #e5e7eb;
    --border-color: #e5e7eb;

    --text-primary: #0f172a;
    --text-secondary: #1f2937;
    --text-tertiary: #374151;
    --text-muted: #6b7280;
    --text-disabled: #9ca3af;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.08);
    --shadow-2xl: 0 25px 50px rgba(0,0,0,0.12);
}

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

*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-primary);
    background: linear-gradient(135deg, var(--bg-primary) 0%, #0f172a 100%);
    color: var(--text-primary);
    line-height: 1.6;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Professional Typography Scale */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.025em;
    color: var(--text-primary);
}

h1 { font-size: 2.5rem; font-weight: 700; }
h2 { font-size: 2rem; font-weight: 600; }
h3 { font-size: 1.5rem; font-weight: 600; }
h4 { font-size: 1.25rem; font-weight: 600; }
h5 { font-size: 1.125rem; font-weight: 500; }
h6 { font-size: 1rem; font-weight: 500; }

p {
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--border-secondary);
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-accent);
}

/* Selection */
::selection {
    background: var(--brand-primary);
    color: var(--text-primary);
}

::-moz-selection {
    background: var(--brand-primary);
    color: var(--text-primary);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Professional Navigation */
.navbar {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-primary);
    padding: var(--space-lg) 0;
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ticker-bar {
    font-family: var(--font-family-mono);
    font-size: 0.85rem;
    color: var(--text-primary);
    background: transparent;
    white-space: nowrap;
    overflow: hidden;
}

.nav-title {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--brand-secondary) 0%, var(--brand-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
    letter-spacing: -0.02em;
}

.nav-tabs {
    display: flex;
    gap: var(--space-sm);
    background: var(--bg-tertiary);
    padding: var(--space-xs);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-primary);
}

.nav-tab {
    padding: var(--space-sm) var(--space-lg);
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
    font-weight: 500;
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
}

.nav-tab::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
    opacity: 0;
    transition: var(--transition-fast);
    border-radius: var(--radius-lg);
}

.nav-tab:hover::before {
    opacity: 0.1;
}

.nav-tab:hover {
    color: var(--text-primary);
    transform: translateY(-1px);
}

.nav-tab.active {
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.nav-tab.active::before {
    opacity: 0;
}

/* Main Content */
.main-content {
    padding: 2rem 0;
}

.tab-content {
    display: none;
}

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

/* Professional Warning Banner */
.warning-banner {
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.1) 0%, rgba(239, 68, 68, 0.05) 100%);
    border: 1px solid rgba(220, 38, 38, 0.3);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    margin-bottom: var(--space-2xl);
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.warning-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.05) 0%, transparent 100%);
    pointer-events: none;
}

.warning-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    color: var(--danger-light);
    filter: drop-shadow(0 0 8px rgba(239, 68, 68, 0.3));
}

.warning-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

.warning-text strong {
    color: var(--danger-light);
    font-weight: 600;
}

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

@media (max-width: 768px) {
    .grid-layout {
        grid-template-columns: 1fr;
    }
}

/* Additional compact stacking for small phones */
@media (max-width: 600px) {
    .form-row { grid-template-columns: 1fr; gap: var(--space-sm); }
    .nav-container { padding: 0 var(--space-lg); }
    .charts-section { grid-template-columns: 1fr; }
    .nav-title { font-size: 1.35rem; }
}

/* Professional Panels */
.input-panel,
.results-panel {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-2xl);
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
}

.input-panel::before,
.results-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.02) 0%, rgba(16, 185, 129, 0.02) 100%);
    pointer-events: none;
    opacity: 0;
    transition: var(--transition-normal);
}

.input-panel:hover::before,
.results-panel:hover::before {
    opacity: 1;
}

.input-panel:hover,
.results-panel:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
    border-color: var(--border-accent);
}

.panel-header {
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border-primary);
    position: relative;
}

.panel-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 60px;
    height: 2px;
    background: linear-gradient(135deg, var(--brand-secondary) 0%, var(--brand-accent) 100%);
    border-radius: var(--radius-full);
}

.panel-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -0.01em;
    position: relative;
}

/* Professional Form Styles */
.form-group {
    margin-bottom: var(--space-lg);
    position: relative;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
}

label {
    display: block;
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.025em;
    text-transform: uppercase;
}

input[type="text"],
input[type="number"],
select {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-tertiary);
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}
/* Placeholder animation and subtle float effect */
input::placeholder,
select::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
    transition: var(--transition-fast);
}

input:focus::placeholder,
select:focus::placeholder {
    opacity: 0.45;
}

input[type="text"]:focus,
input[type="number"]:focus,
select:focus {
    outline: none;
    border-color: var(--brand-secondary);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
    background: var(--bg-elevated);
    transform: translateY(-1px);
}

input[type="text"]:hover,
input[type="number"]:hover,
select:hover {
    border-color: var(--border-secondary);
    background: var(--bg-elevated);
}

input[type="range"] {
    width: 100%;
    height: 8px;
    margin: var(--space-md) 0;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--brand-secondary) 0%, var(--brand-accent) 100%);
    border-radius: var(--radius-full);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

input[type="range"]::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--brand-secondary) 0%, var(--brand-accent) 100%);
    border-radius: var(--radius-full);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-md);
}

.range-value {
    text-align: center;
    color: var(--brand-secondary);
    font-weight: 700;
    font-size: 1rem;
    margin-top: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-primary);
    display: inline-block;
    min-width: 60px;
}

.help-text {
    display: block;
    margin-top: var(--space-sm);
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.4;
    font-style: italic;
}

/* Professional Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.025em;
    text-transform: uppercase;
    font-size: 0.9rem;
    min-height: 48px;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: var(--transition-normal);
}

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

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.btn:disabled::before {
    display: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--brand-secondary);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    background: linear-gradient(135deg, var(--brand-secondary) 0%, var(--brand-accent) 100%);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 2px solid var(--border-primary);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-elevated);
    border-color: var(--border-secondary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-success {
    background: linear-gradient(135deg, var(--success) 0%, var(--success-light) 100%);
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--success-light);
}

.btn-success:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(16, 185, 129, 0.3);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger) 0%, var(--danger-light) 100%);
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--danger-light);
}

.btn-danger:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(239, 68, 68, 0.3);
}

.btn-sm {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.8rem;
    min-height: 36px;
}

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: 1rem;
    min-height: 56px;
}

.btn-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

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

/* Button Loading State */
.btn.loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn.loading .btn-text {
    opacity: 0;
}

.btn.loading .btn-spinner {
    opacity: 1;
}

/* Professional KPI Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.kpi-item {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.kpi-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(16, 185, 129, 0.05) 100%);
    opacity: 0;
    transition: var(--transition-normal);
}

.kpi-item:hover::before {
    opacity: 1;
}

.kpi-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
    border-color: var(--border-accent);
}

.kpi-label {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
    position: relative;
    z-index: 1;
}

.kpi-value {
    color: var(--text-primary);
    font-size: 2rem;
    font-weight: 800;
    font-family: var(--font-family-mono);
    letter-spacing: -0.02em;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* KPI Item Variants */
.kpi-item.positive .kpi-value {
    color: var(--success-light);
}

.kpi-item.negative .kpi-value {
    color: var(--danger-light);
}

.kpi-item.neutral .kpi-value {
    color: var(--brand-accent);
}

/* Result Content */
.result-content {
    font-size: 0.9rem;
    line-height: 1.6;
}

.result-content h3,
.result-content h4 {
    color: var(--text-primary);
    margin: 1rem 0 0.5rem 0;
    font-weight: 600;
}

.result-content h3 {
    font-size: 1.1rem;
}

.result-content h4 {
    font-size: 1rem;
}

.result-content p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.result-content table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 1rem 0;
    background: var(--bg-tertiary);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow);
}

.result-content thead th {
    background: linear-gradient(180deg, var(--bg-card), var(--bg-tertiary));
    color: var(--text-primary);
    font-weight: 700;
}

.result-content th,
.result-content td {
    padding: 0.9rem 0.75rem;
    text-align: center;
    border-bottom: 1px solid var(--border-primary);
}

.result-content tr:last-child td {
    border-bottom: none;
}

.result-content tbody tr:hover {
    background: rgba(148, 163, 184, 0.08);
}

.result-content h3 {
    font-size: 1.35rem;
}

.result-content h4 {
    font-size: 1.1rem;
    margin-top: 1.25rem;
}

.result-section {
    margin-bottom: 1.25rem;
}

#marketDashboard.result-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: 12px;
    padding: 1.25rem;
}

.result-content ul {
    color: var(--text-secondary);
    margin: 0.5rem 0;
    padding-left: 1.5rem;
}

.result-content li {
    margin-bottom: 0.25rem;
}

/* Professional Charts Section */
.charts-section {
    margin-top: var(--space-3xl);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-2xl);
}

.chart-container {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-2xl);
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
}

.chart-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.02) 0%, rgba(16, 185, 129, 0.02) 100%);
    pointer-events: none;
    opacity: 0;
    transition: var(--transition-normal);
}

.chart-container:hover::before {
    opacity: 1;
}

.chart-container:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
    border-color: var(--border-accent);
}

.chart-container h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    position: relative;
    z-index: 1;
}

.chart-container canvas {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    max-height: 400px;
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.chart-container:hover canvas {
    box-shadow: var(--shadow-lg);
}

/* Dashboard */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

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

.history-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

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

.setting-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.setting-item label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.setting-item input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
}

/* Monitor Section */
.monitor-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 0;
    margin-top: 2rem;
}

.monitor-section h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.monitor-content {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
}

/* Tooltips */
.has-tooltip {
    position: relative;
    cursor: help;
    border-bottom: 1px dashed var(--border-accent);
}
.has-tooltip[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
    padding: 6px 8px;
    font-size: 12px;
    border-radius: 6px;
    white-space: nowrap;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-fast);
    z-index: var(--z-tooltip);
}
.has-tooltip[data-tooltip]:hover::after,
.has-tooltip[data-tooltip]:focus::after {
    opacity: 1;
}

/* Tabs keyboard focus */
.nav-tab:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(59,130,246,0.35);
}

/* Nav right actions */
.nav-actions { display: flex; gap: 0.5rem; align-items: center; }

/* Professional Toast Notifications */
.toast {
    position: fixed;
    bottom: var(--space-2xl);
    right: var(--space-2xl);
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-lg) var(--space-xl);
    color: var(--text-primary);
    box-shadow: var(--shadow-2xl);
    transform: translateX(120%);
    transition: var(--transition-normal);
    z-index: var(--z-toast);
    max-width: 400px;
    min-width: 300px;
    position: relative;
    overflow: hidden;
}

.toast::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(16, 185, 129, 0.05) 100%);
    pointer-events: none;
}

.toast.show {
    transform: translateX(0);
}

.toast.success {
    border-color: var(--success);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(5, 150, 105, 0.05) 100%);
}

.toast.success::before {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(5, 150, 105, 0.05) 100%);
}

.toast.error {
    border-color: var(--danger);
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(220, 38, 38, 0.05) 100%);
}

.toast.error::before {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(220, 38, 38, 0.05) 100%);
}

.toast.warning {
    border-color: var(--warning);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(217, 119, 6, 0.05) 100%);
}

.toast.warning::before {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(217, 119, 6, 0.05) 100%);
}

.toast.info {
    border-color: var(--info);
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1) 0%, rgba(2, 132, 199, 0.05) 100%);
}

.toast.info::before {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1) 0%, rgba(2, 132, 199, 0.05) 100%);
}

/* Loading States */
.loading {
    display: none;
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
}

.loading.show {
    display: block;
}

/* Fullscreen Loading Overlay */
.loading-overlay[hidden] { display: none !important; }
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
}
.loading-spinner {
    width: 64px;
    height: 64px;
    border: 6px solid rgba(255,255,255,0.2);
    border-top-color: var(--brand-secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    box-shadow: var(--shadow-glow);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    margin: 0 auto 1rem;
    animation: spin 1s linear infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-tabs {
        width: 100%;
        justify-content: center;
    }
    
    .main-content {
        padding: 1rem 0;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .dashboard-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .dashboard-actions {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .kpi-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-tabs {
        flex-direction: column;
    }
    
    .nav-tab {
        width: 100%;
    }
}

/* Professional Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

@keyframes shimmer {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

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

.animate-fade-in-down {
    animation: fadeInDown 0.6s ease-out;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.6s ease-out;
}

.animate-fade-in-right {
    animation: fadeInRight 0.6s ease-out;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

/* Staggered Animations */
.animate-stagger-1 { animation-delay: 0.1s; }
.animate-stagger-2 { animation-delay: 0.2s; }
.animate-stagger-3 { animation-delay: 0.3s; }
.animate-stagger-4 { animation-delay: 0.4s; }

/* Loading Skeleton */
.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-elevated) 50%, var(--bg-tertiary) 75%);
    background-size: 200px 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

/* Hover Effects */
.hover-lift {
    transition: var(--transition-normal);
}

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

.hover-glow {
    transition: var(--transition-normal);
}

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

/* Focus States */
.focus-ring:focus {
    outline: none;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }
.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.hidden { display: none; }
.visible { display: block; }

/* Glass Effect */
.glass {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-primary);
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--brand-secondary) 0%, var(--brand-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Status Indicators */
.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-indicator.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-light);
    border: 1px solid var(--success);
}

.status-indicator.warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-light);
    border: 1px solid var(--warning);
}

.status-indicator.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-light);
    border: 1px solid var(--danger);
}

.status-indicator.info {
    background: rgba(14, 165, 233, 0.1);
    color: var(--info-light);
    border: 1px solid var(--info);
}