:root {
    /* Palette — dark deck aesthetic, warm accent for CLE identity */
    --bg: oklch(0.14 0.02 260);
    --bg-elev: oklch(0.18 0.02 260 / 0.86);
    --bg-elev-solid: oklch(0.18 0.02 260);
    --fg: oklch(0.94 0.01 260);
    --fg-muted: oklch(0.68 0.02 260);
    --fg-faint: oklch(0.52 0.02 260);
    --line: oklch(1 0 0 / 0.09);
    --line-strong: oklch(1 0 0 / 0.14);
    --accent: oklch(0.72 0.16 55);          /* warm orange — Cleveland */
    --accent-fg: oklch(0.14 0.02 260);
    --danger: oklch(0.68 0.22 22);

    /* Type */
    --font-display: 'Cabinet Grotesk', 'Satoshi', system-ui, sans-serif;
    --text-xs: 11px;
    --text-sm: 12px;
    --text-base: 13px;
    --text-lg: 15px;
    --text-xl: 20px;

    /* Radii + shadow */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --shadow-md: 0 8px 24px -8px oklch(0 0 0 / 0.45), 0 2px 6px oklch(0 0 0 / 0.25);

    /* Panel widths */
    --panel-w: 320px;
    --topbar-h: 56px;
}

/* ---------- Map canvas ---------- */
#map {
    position: absolute;
    inset: 0;
    background: var(--bg);
}

/* Hide default MapLibre attribution — we roll our own */
.maplibregl-ctrl-attrib, .maplibregl-ctrl-bottom-right, .maplibregl-ctrl-bottom-left {
    display: none !important;
}

/* ---------- Top bar ---------- */
.topbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--topbar-h);
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(180deg, oklch(0.14 0.02 260 / 0.72) 0%, oklch(0.14 0.02 260 / 0) 100%);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 3;
    pointer-events: none;
}
.topbar > * { pointer-events: auto; }

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--fg);
    padding: 6px 10px 6px 6px;
    border-radius: var(--radius-md);
    transition: background 0.15s ease;
}
.brand:hover { background: var(--bg-elev); }
.brand__mark {
    width: 32px;
    height: 32px;
    color: var(--accent);
    flex: 0 0 auto;
}
.brand__wordmark { display: flex; flex-direction: column; line-height: 1.1; }
.brand__title {
    font-family: var(--font-display);
    font-weight: 800;
    letter-spacing: -0.01em;
    font-size: var(--text-lg);
}
.brand__sub {
    font-size: var(--text-xs);
    color: var(--fg-muted);
    margin-top: 2px;
    letter-spacing: 0.02em;
}

.topbar__right { display: flex; gap: 8px; }

.btn {
    padding: 8px 12px;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: background 0.15s ease, border-color 0.15s ease;
    border: 1px solid transparent;
}
.btn--ghost {
    background: var(--bg-elev);
    border-color: var(--line);
    color: var(--fg);
    padding: 8px;
}
.btn--ghost:hover { background: var(--bg-elev-solid); border-color: var(--line-strong); }
.btn--secondary {
    background: var(--bg-elev);
    border-color: var(--line);
    color: var(--fg);
    flex: 1;
    justify-content: center;
}
.btn--secondary:hover { background: var(--bg-elev-solid); border-color: var(--line-strong); }

/* ---------- Panel ---------- */
.panel {
    position: fixed;
    top: calc(var(--topbar-h) + 8px);
    right: 12px;
    width: var(--panel-w);
    max-height: calc(100dvh - var(--topbar-h) - 60px);
    overflow-y: auto;
    background: var(--bg-elev);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    z-index: 2;
    transform-origin: top right;
    transition: opacity 0.18s ease, transform 0.22s cubic-bezier(0.2, 0.6, 0.2, 1);
}
.panel[hidden] {
    display: block !important;
    opacity: 0;
    pointer-events: none;
    transform: scale(0.98) translateY(-4px);
}

.panel__section {
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
}
.panel__section:last-child { border-bottom: 0; }

.panel__title {
    margin: 0 0 12px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: var(--text-xs);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--fg-muted);
}

/* ---------- Toggle rows ---------- */
.toggle {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 12px;
    align-items: center;
    padding: 8px 4px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background 0.12s ease;
}
.toggle:hover { background: oklch(1 0 0 / 0.03); }
.toggle input { position: absolute; opacity: 0; pointer-events: none; }
.toggle__track {
    width: 32px;
    height: 18px;
    background: oklch(1 0 0 / 0.14);
    border-radius: 999px;
    position: relative;
    transition: background 0.18s ease;
}
.toggle__track::after {
    content: "";
    position: absolute;
    top: 2px;
    left: 2px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--fg);
    transition: transform 0.18s cubic-bezier(0.2, 0.6, 0.2, 1);
}
.toggle input:checked + .toggle__track {
    background: var(--accent);
}
.toggle input:checked + .toggle__track::after {
    transform: translateX(14px);
    background: var(--accent-fg);
}
.toggle__label { display: flex; flex-direction: column; gap: 2px; }
.toggle__name { font-size: var(--text-sm); font-weight: 500; }
.toggle__meta { font-size: var(--text-xs); color: var(--fg-muted); }

/* ---------- Preset chips ---------- */
.preset-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}
.chip {
    padding: 8px 10px;
    background: transparent;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--fg);
    text-align: left;
    transition: background 0.12s ease, border-color 0.12s ease;
}
.chip:hover {
    background: var(--bg-elev-solid);
    border-color: var(--line-strong);
}
.chip.is-active {
    background: var(--accent);
    color: var(--accent-fg);
    border-color: var(--accent);
}

/* ---------- View controls ---------- */
.view-row {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}
.view-row:last-child { margin-bottom: 0; }

.range {
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    align-items: center;
    gap: 4px 8px;
    width: 100%;
}
.range__label {
    grid-column: 1 / -1;
    font-size: var(--text-xs);
    color: var(--fg-muted);
}
.range input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
    height: 20px;
    grid-column: 1;
}
.range input[type="range"]::-webkit-slider-runnable-track {
    height: 4px;
    background: var(--line);
    border-radius: 999px;
}
.range input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    margin-top: -5px;
    cursor: pointer;
}
.range input[type="range"]::-moz-range-track {
    height: 4px;
    background: var(--line);
    border-radius: 999px;
}
.range input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    border: 0;
    cursor: pointer;
}
.range output {
    grid-column: 2;
    font-size: var(--text-xs);
    color: var(--fg-muted);
    font-variant-numeric: tabular-nums;
    min-width: 40px;
    text-align: right;
}

/* ---------- Meta rows ---------- */
.panel__section--meta { padding-top: 10px; padding-bottom: 10px; }
.meta-row {
    display: flex;
    justify-content: space-between;
    padding: 4px 0;
    font-size: var(--text-xs);
    color: var(--fg-muted);
}
.meta-row__value {
    color: var(--fg);
    font-variant-numeric: tabular-nums;
}

/* ---------- Attribution pill ---------- */
.attribution {
    position: fixed;
    left: 12px;
    bottom: 12px;
    max-width: calc(100vw - 24px);
    z-index: 3;
    pointer-events: none;
}
.attribution__pill {
    display: inline-block;
    padding: 6px 12px;
    background: oklch(0.14 0.02 260 / 0.72);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--line);
    border-radius: 999px;
    font-size: var(--text-xs);
    color: var(--fg-muted);
    pointer-events: auto;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ---------- Loading ---------- */
.loading {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--bg-elev-solid);
    padding: 14px 20px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-md);
    z-index: 5;
    opacity: 1;
    transition: opacity 0.3s ease;
    pointer-events: none;
}
.loading[hidden] {
    display: flex !important;
    opacity: 0;
}
.loading__spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--line);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}
.loading__text { font-size: var(--text-sm); color: var(--fg-muted); }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Mobile ---------- */
@media (max-width: 640px) {
    .panel {
        width: calc(100vw - 24px);
        right: 12px;
        left: 12px;
    }
    .brand__sub { display: none; }
}

/* ---------- Legend ---------- */
.legend {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    margin-bottom: 8px;
}
.legend-row {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 6px;
    background: transparent;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--fg);
    text-align: left;
    cursor: pointer;
    transition: background 0.12s ease, border-color 0.12s ease, opacity 0.12s ease;
}
.legend-row:hover { background: var(--bg-elev-solid); border-color: var(--line-strong); }
.legend-row.is-off { opacity: 0.35; }
.legend-row.is-off .legend-dot { filter: grayscale(1); }
.legend-dot {
    width: 10px; height: 10px;
    border-radius: 2px;
    flex: 0 0 auto;
    box-shadow: 0 0 0 1px oklch(0 0 0 / 0.3) inset;
}
.legend-label {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.panel__hint {
    margin: 4px 4px 0;
    font-size: 10.5px;
    color: var(--fg-faint);
    letter-spacing: 0.02em;
}

/* Wide chip variant for full-width preset */
.chip--wide { grid-column: 1 / -1; }

/* Building info popup — dark themed */
.bldg-popup .maplibregl-popup-content {
    background: var(--bg-elev-solid);
    color: var(--fg);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 10px 12px;
    font-size: var(--text-xs);
}
.bldg-popup .maplibregl-popup-tip { display: none; }
.bldg-popup__name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: var(--text-sm);
    color: var(--fg);
    margin-bottom: 3px;
}
.bldg-popup__meta {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--fg-muted);
    font-variant-numeric: tabular-nums;
}
.bldg-popup__dot {
    width: 8px; height: 8px;
    border-radius: 2px;
    box-shadow: 0 0 0 1px oklch(0 0 0 / 0.3) inset;
    flex: 0 0 auto;
}