:root {
    /* Primary Colors - Professional Blue & Slate */
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;

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

    /* Functional */
    --bg-page: #f8fafc;
    --bg-panel: rgba(255, 255, 255, 0.95);
    --border: var(--slate-200);
    --shadow-sm: 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);
    --backdrop-blur: blur(12px);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-page);
    color: var(--slate-800);
    height: 100vh;
    width: 100vw;
    overflow: hidden;
    position: relative;
}

/* Map */
#map {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* UI Layer */
.ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 10;
    display: flex;
}

/* Sidebar */
.panel-left {
    width: 420px;
    height: 100%;
    background: var(--bg-panel);
    backdrop-filter: var(--backdrop-blur);
    border-right: 1px solid var(--border);
    padding: 2rem;
    pointer-events: auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    box-shadow: var(--shadow-lg);
    z-index: 20;
}

.brand-header {
    margin-bottom: 1rem;
}

.brand-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--slate-900);
    letter-spacing: -0.025em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.brand-subtitle {
    font-size: 0.875rem;
    color: var(--slate-500);
    font-weight: 500;
}

/* Card Style */
.card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--slate-300);
}

/* Search Box */
.search-container {
    position: relative;
    z-index: 30;
}

.search-input {
    width: 100%;
    padding: 0.875rem 1rem 0.875rem 2.75rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    font-size: 0.95rem;
    color: var(--slate-800);
    background: white;
    transition: all 0.2s;
    box-shadow: var(--shadow-sm);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--slate-400);
    pointer-events: none;
}

/* Dropdown */
.results-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    right: 0;
    background: white;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-lg);
    max-height: 300px;
    overflow-y: auto;
    display: none;
    z-index: 40;
}

.result-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    border-bottom: 1px solid var(--slate-100);
    transition: background 0.15s;
}

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

.result-item:hover {
    background: var(--primary-light);
}

.result-item strong {
    display: block;
    color: var(--slate-800);
    font-size: 0.9rem;
    font-weight: 600;
}

.result-item small {
    color: var(--slate-500);
    font-size: 0.8rem;
}

/* Controls */
.filter-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--slate-500);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    background-color: white;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--slate-700);
    cursor: pointer;
    transition: border-color 0.2s;
}

.form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.heatmap-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.75rem;
    background: white;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    font-weight: 600;
    color: var(--slate-600);
    cursor: pointer;
    transition: all 0.2s;
}

.heatmap-toggle-btn:hover {
    background: var(--slate-50);
    border-color: var(--slate-300);
    color: var(--slate-800);
}

.heatmap-toggle-btn.active {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary);
}

/* Stats Panel */
#stats-panel {
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
    animation: slideIn 0.3s ease-out;
}

.commune-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--slate-900);
    margin-bottom: 0.25rem;
}

.commune-subtitle {
    font-size: 0.875rem;
    color: var(--slate-500);
    margin-bottom: 1.5rem;
}

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

.stat-item {
    background: var(--slate-50);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.stat-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--slate-500);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--slate-900);
}

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

/* Chart Container */
.chart-panel {
    position: absolute;
    bottom: 2rem;
    right: 2rem;
    width: 500px;
    background: var(--bg-panel);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--border);
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    padding: 1.5rem;
    z-index: 20;
    display: none;
    pointer-events: auto;
}

.chart-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--slate-800);
    margin-bottom: 1rem;
}

/* Legend */
.heatmap-legend {
    position: absolute;
    bottom: 2rem;
    left: 460px;
    /* Offset for sidebar + spacing */
    background: var(--bg-panel);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 1rem;
    box-shadow: var(--shadow-md);
    z-index: 20;
    display: none;
    pointer-events: auto;
}

.legend-title {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--slate-500);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.gradient-bar {
    width: 200px;
    height: 8px;
    background: linear-gradient(to right, #fefce8, #facc15, #f97316, #ef4444);
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

.legend-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--slate-500);
    font-weight: 500;
}

/* Animations */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

/* Mobile */
@media (max-width: 768px) {
    .panel-left {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border);
        border-radius: 0 0 1.5rem 1.5rem;
        padding: 1.5rem;
        max-height: 60vh;
        overflow-y: auto;
    }

    .chart-panel {
        display: none !important;
    }

    .heatmap-legend {
        left: 1rem;
        bottom: 1rem;
    }
}