:root {
    --bg-panel: rgba(0, 0, 0, 0.75);
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.1);
    --text-primary: #fff;
    --text-secondary: rgba(255, 255, 255, 0.9);
    --text-muted: rgba(255, 255, 255, 0.6);
    --text-faint: rgba(255, 255, 255, 0.4);
    --text-hint: rgba(255, 255, 255, 0.35);
    --edge-spacing: 16px;

    --font-xs: 10px;
    --font-sm: 11px;
    --font-base: 13px;
}

@font-face {
    font-family: 'Inter';
    src: url('https://rsms.me/inter/font-files/InterVariable.woff2') format('woff2');
    font-weight: 100 900;
    font-display: swap;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { width: 100%; height: 100%; font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; }
#map { width: 100%; height: 100%; background: #000; }
.maplibregl-ctrl, .maplibregl-ctrl-logo, .maplibregl-ctrl-attrib { display: none !important; }

.glass {
    background: var(--bg-panel);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.panel {
    position: absolute;
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    font-size: var(--font-base);
}

/* --- Title panel --- */

#panel {
    top: var(--edge-spacing);
    left: var(--edge-spacing);
    padding: 12px 16px;
    width: 220px;
    max-height: calc(100vh - 32px);
    overflow-y: auto;
    z-index: 10;
}

#panel h1 {
    font-size: 18px;
    font-weight: 600;
    margin: 0 0 6px;
    color: var(--text-primary);
    letter-spacing: 0;
    text-transform: none;
}

#panel h1 a {
    color: inherit;
    text-decoration: none;
}

.title-watch {
    color: var(--text-muted);
    font-style: italic;
}

.subtitle {
    font-size: var(--font-sm);
    line-height: 1.5;
    color: var(--text-faint);
    margin: 0;
}

.subtitle + .subtitle {
    margin-top: 6px;
}

.subtitle a {
    color: var(--text-muted);
    text-decoration: underline;
}

.subtitle a:hover {
    color: var(--text-primary);
}

/* --- Legend --- */

#legend {
    bottom: var(--edge-spacing);
    left: var(--edge-spacing);
    padding: 12px 14px;
    z-index: 10;
    display: none;
}

#legend.active { display: block; }

#legend h4 {
    font-size: var(--font-sm);
    font-weight: 500;
    color: var(--text-faint);
    margin: 0 0 8px 0;
}

.legend-item {
    display: flex;
    align-items: center;
    margin: 5px 0;
    font-size: var(--font-sm);
    color: var(--text-muted);
    cursor: pointer;
    transition: opacity 0.15s;
}

.legend-item:hover { color: var(--text-primary); }
.legend-item.dimmed { opacity: 0.35; }

.legend-circle {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 10px;
    flex-shrink: 0;
}

.legend-name { flex: 1; }

.legend-cnt {
    color: var(--text-faint);
    font-variant-numeric: tabular-nums;
    margin-left: 10px;
}

/* --- Date slider --- */

#date-slider {
    position: absolute;
    bottom: var(--edge-spacing);
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 32px);
    max-width: 700px;
    padding: 12px 20px 8px;
    z-index: 10;
    display: none;
}

#date-slider.active { display: block; }

#slider {
    width: 100%;
    -webkit-appearance: none;
    appearance: none;
    height: 1px;
    background: var(--border-light);
    outline: none;
    cursor: pointer;
}

#slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 10px;
    height: 10px;
    background: var(--text-muted);
    border: none;
    border-radius: 0;
    cursor: pointer;
    transition: background 0.15s;
}

#slider::-webkit-slider-thumb:hover {
    background: var(--text-primary);
}

#slider::-moz-range-thumb {
    width: 10px;
    height: 10px;
    background: var(--text-muted);
    border: none;
    border-radius: 0;
    cursor: pointer;
}

#slider::-moz-range-track {
    height: 1px;
    background: var(--border-light);
    border: none;
}

#slider-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 6px;
    font-size: var(--font-xs);
    color: var(--text-hint);
    font-variant-numeric: tabular-nums;
}

#slider-labels .current {
    color: var(--text-secondary);
    font-weight: 500;
    text-align: center;
    flex: 1;
}

/* --- Tooltip --- */

#tooltip {
    display: none;
    position: absolute;
    border: 1px solid var(--border-subtle);
    padding: 10px 14px;
    font-size: var(--font-sm);
    line-height: 1.6;
    z-index: 20;
    pointer-events: none;
    min-width: 180px;
    max-width: 240px;
}

#tooltip .tt-hex {
    color: var(--text-primary);
    font-weight: 500;
    font-size: var(--font-base);
    font-variant-numeric: tabular-nums;
}

#tooltip .tt-label {
    color: var(--text-hint);
    font-size: var(--font-xs);
    font-weight: 500;
}

#tooltip .tt-value {
    color: var(--text-secondary);
    margin-bottom: 4px;
}

/* --- Scrollbar --- */

#panel::-webkit-scrollbar { width: 4px; }
#panel::-webkit-scrollbar-track { background: transparent; }
#panel::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.2); }

/* --- Mobile --- */

@media (max-width: 768px) {
    #panel {
        top: 8px;
        left: 8px;
        padding: 12px 16px;
        max-width: 220px;
    }
    #panel h1 { font-size: 16px; }

    #legend {
        bottom: auto;
        top: 8px;
        right: 8px;
        left: auto;
        padding: 8px 10px;
    }

    #date-slider {
        width: calc(100% - 16px);
        max-width: none;
        bottom: 8px;
    }
}