:root {
    /* Color Palette - Vibrant Dark Mode */
    --bg-main: #0B0F19; /* Very dark blue/black */
    --bg-panel: rgba(20, 26, 41, 0.7); /* Deep blue with opacity for glass effect */
    --bg-panel-border: rgba(255, 255, 255, 0.08);
    
    --text-main: #E2E8F0;
    --text-muted: #94A3B8;
    --text-highlight: #38BDF8; /* Light blue */
    
    --accent-primary: #818CF8; /* Indigo */
    --accent-primary-hover: #6366F1;
    --accent-secondary: #F472B6; /* Pink */
    
    --success: #34D399;
    --warning: #FBBF24;
    --danger: #F87171;
    
    /* Metrics panel sizing */
    --sidebar-width: 320px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
    
    /* Subtle background grid/mesh */
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(244, 114, 182, 0.1) 0px, transparent 50%);
    background-attachment: fixed;
}

/* Glassmorphism Utilities */
.glass-panel {
    background: var(--bg-panel);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--bg-panel-border);
    border-radius: 16px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

.glass-header {
    background: rgba(11, 15, 25, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--bg-panel-border);
}

/* Layout */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content h1 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.25rem;
}

.header-content h1 span {
    color: var(--accent-primary);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.stats-container {
    display: flex;
    gap: 1.5rem;
}

.stat-box {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    background: rgba(255, 255, 255, 0.03);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

/* Main Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    gap: 1.5rem;
    padding: 1.5rem 2rem;
    flex: 1;
}

/* Sidebar Controls */
.controls-panel {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.controls-panel h2 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-highlight);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.control-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
}

.metric-select {
    appearance: none;
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--bg-panel-border);
    color: var(--text-main);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s ease;
    
    /* Custom arrow */
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%2394A3B8%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem top 50%;
    background-size: 0.65rem auto;
}

.metric-select:hover, .metric-select:focus {
    border-color: var(--accent-primary);
    outline: none;
    background-color: rgba(0, 0, 0, 0.4);
}

.metric-select option {
    background-color: var(--bg-main);
    color: var(--text-main);
}

/* Preset Buttons */
.presets-container {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
}

.presets-container h3 {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.preset-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--bg-panel-border);
    color: var(--text-main);
    padding: 0.6rem 1rem;
    border-radius: 6px;
    font-size: 0.85rem;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s ease;
}

.preset-btn:hover {
    background: rgba(129, 140, 248, 0.15); /* Primary accent with low opacity */
    border-color: var(--accent-primary);
    transform: translateX(4px);
}

/* Toggle Switch */
.toggle-group {
    margin-top: 1rem;
}

.toggle-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
}

.toggle-label input[type="checkbox"] {
    appearance: none;
    width: 40px;
    height: 22px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    position: relative;
    cursor: pointer;
    outline: none;
    border: 1px solid var(--bg-panel-border);
    transition: all 0.3s ease;
}

.toggle-label input[type="checkbox"]::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    background: white;
    border-radius: 50%;
    transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
}

.toggle-label input[type="checkbox"]:checked {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.toggle-label input[type="checkbox"]:checked::after {
    transform: translateX(18px);
}

/* Chart Area */
.chart-panel {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    min-height: 600px;
    position: relative;
}

.view-toggles {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    justify-content: center;
    align-self: center;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.25rem;
    border-radius: 8px;
    border: 1px solid var(--bg-panel-border);
}

.view-toggle-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.view-toggle-btn:hover {
    color: var(--text-main);
}

.view-toggle-btn.active {
    background: var(--accent-primary);
    color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.interaction-controls {
    display: none;
    gap: 0.5rem;
    margin: 0 auto 0.5rem auto;
    padding: 0.35rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--bg-panel-border);
    border-radius: 9999px;
}

.interaction-btn {
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-muted);
    padding: 0.45rem 0.85rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.interaction-btn.active {
    background: rgba(245, 158, 11, 0.18);
    border-color: rgba(245, 158, 11, 0.4);
    color: #FCD34D;
}

.interaction-btn-reset {
    color: var(--text-main);
}

.interaction-hint {
    display: none;
    margin: 0 auto 0.75rem auto;
    color: var(--text-muted);
    font-size: 0.8rem;
    text-align: center;
}

.plot-container {
    flex: 1;
    width: 100%;
    height: 100%;
    min-height: 400px;
    overscroll-behavior: contain;
    touch-action: none;
}

.plot-container .js-plotly-plot,
.plot-container .plotly,
.plot-container .svg-container,
.plot-container canvas {
    overscroll-behavior: contain;
    touch-action: none;
}



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

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Responsiveness */
@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .chart-panel {
        min-height: 500px;
    }
}

@media (pointer: coarse) {
    .interaction-controls {
        display: inline-flex;
        flex-wrap: wrap;
        justify-content: center;
    }

    .interaction-hint {
        display: block;
    }
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
        padding: 1rem;
        gap: 1rem;
    }

    .header-content h1 {
        font-size: 1.5rem;
    }

    .stats-container {
        flex-wrap: wrap;
        width: 100%;
        gap: 0.5rem;
    }

    .stat-box {
        flex: 1 1 calc(33.333% - 0.5rem);
        align-items: flex-start;
        padding: 0.5rem;
    }

    .dashboard-grid {
        padding: 1rem;
        gap: 1rem;
    }
    
    .controls-panel {
        padding: 1rem;
    }

    .chart-panel {
        padding: 0.5rem;
        min-height: 400px;
    }

    .interaction-controls {
        display: inline-flex;
        flex-wrap: wrap;
        justify-content: center;
    }

    .interaction-hint {
        display: block;
    }
}