:root {
  --bg: #ffffff;
  --ink: #1d2733;
  --muted: #6b7787;
  --accent: #e8590c;
  --gold: #ffd166;
  --night: #27304f;
  --border: #e3e7ee;
  --shadow: 0 6px 24px rgba(20, 30, 50, 0.18);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
#map { position: absolute; inset: 0; }

#night-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 16, 38, 0.45);
  display: none;
  align-items: flex-start;
  justify-content: center;
  pointer-events: none;
  z-index: 5;
}
#night-overlay.visible { display: flex; }
#night-overlay span {
  margin-top: 18vh;
  background: rgba(12, 18, 40, 0.85);
  color: #dfe6ff;
  padding: 8px 18px;
  border-radius: 99px;
  font-size: 14px;
}

/* ---- control panel ---------------------------------------------------- */

#panel {
  position: absolute;
  top: 12px;
  left: 12px;
  width: 340px;
  max-width: calc(100vw - 24px);
  background: var(--bg);
  color: var(--ink);
  border-radius: 14px;
  box-shadow: var(--shadow);
  z-index: 10;
  overflow: hidden;
}
#panel header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px 6px;
}
#panel h1 { font-size: 18px; margin: 0; }
#panel.collapsed #panel-body { display: none; }
#panel-toggle {
  border: none;
  background: none;
  font-size: 16px;
  cursor: pointer;
  color: var(--muted);
}
#panel-body { padding: 0 14px 12px; }

.row { display: flex; gap: 8px; align-items: center; margin-top: 10px; flex-wrap: wrap; }

input[type='search'], input[type='date'] {
  flex: 1;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  font-size: 14px;
  min-width: 0;
}

button {
  font: inherit;
  font-size: 13px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  background: #f7f9fc;
  border-radius: 8px;
  cursor: pointer;
  color: var(--ink);
}
button:hover { background: #eef2f8; }

.presets { display: flex; gap: 4px; }
.presets button { padding: 6px 7px; font-size: 12px; }

.time-row { flex-wrap: nowrap; }
#play { width: 34px; flex: none; }
#time {
  flex: 1;
  appearance: none;
  height: 10px;
  border-radius: 6px;
  background: var(--night);
  outline: none;
}
#time::-webkit-slider-thumb {
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--accent);
  cursor: pointer;
}
#time::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--accent);
  cursor: pointer;
}
.mono { font-variant-numeric: tabular-nums; font-weight: 600; min-width: 44px; text-align: center; }

.readouts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.readout {
  display: flex;
  gap: 6px;
  align-items: center;
  background: #f7f9fc;
  border-radius: 8px;
  padding: 6px 8px;
}
.readout label { display: block; font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.readout b { font-size: 13px; }
#sun-arrow {
  display: inline-block;
  font-size: 16px;
  color: var(--accent);
  transition: transform 0.15s linear;
}

.options { justify-content: space-between; }
.check { font-size: 13px; display: flex; gap: 6px; align-items: center; cursor: pointer; }

.hint { font-size: 12.5px; color: var(--muted); margin: 10px 0 0; line-height: 1.45; }

#status {
  margin-top: 10px;
  font-size: 12px;
  padding: 6px 9px;
  border-radius: 8px;
  background: #f1f5f9;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
#status[data-kind='busy'] { background: #fff7e0; color: #8a6d1a; }
#status[data-kind='error'] { background: #fdeaea; color: #a13030; }
#status[data-kind='ok'] { background: #ecf8ef; color: #2c6e3f; }

/* ---- sun report panel -------------------------------------------------- */

#report {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 320px;
  max-width: calc(100vw - 24px);
  max-height: calc(100vh - 24px);
  overflow-y: auto;
  background: var(--bg);
  color: var(--ink);
  border-radius: 14px;
  box-shadow: var(--shadow);
  z-index: 10;
  display: none;
}
#report.visible { display: block; }
#report header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px 0;
}
#report h2 { font-size: 16px; margin: 0; }
#report-close { border: none; background: none; font-size: 15px; color: var(--muted); }
#report-body { padding: 6px 14px 14px; font-size: 13.5px; }
#report-body h3 { font-size: 13px; margin: 14px 0 6px; }

.report-coords { font-size: 11.5px; }
.report-viewpoint {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 8px;
  font-size: 12.5px;
}
.report-viewpoint label { color: var(--muted); }
.report-viewpoint select {
  flex: 1;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #f7f9fc;
  font: inherit;
  font-size: 12.5px;
  color: var(--ink);
  cursor: pointer;
}
.report-day { display: flex; gap: 10px; align-items: center; margin-top: 8px; line-height: 1.35; }
.report-big { font-size: 30px; font-weight: 700; color: var(--accent); }
.report-windows { margin-top: 8px; line-height: 1.5; }

.muted { color: var(--muted); }
.small { font-size: 11.5px; line-height: 1.45; }

.bar-chart {
  display: flex;
  gap: 3px;
  align-items: flex-end;
  height: 120px;
}
.bar-col { flex: 1; display: flex; flex-direction: column; align-items: center; height: 100%; }
.bar-stack { position: relative; flex: 1; width: 100%; }
.bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  border-radius: 3px 3px 0 0;
}
.bar.possible { background: #e8edf5; }
.bar.tree { background: #9ccf8f; }
.bar.lit { background: var(--gold); }
.bar-col.current .bar.lit { background: var(--accent); }
.bar-value { font-size: 9px; color: var(--muted); margin-top: 2px; }
.bar-label { font-size: 10px; color: var(--muted); }

.legend { display: flex; gap: 14px; font-size: 11px; color: var(--muted); margin-top: 6px; }
.swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  margin-right: 4px;
}
.swatch.lit { background: var(--gold); }
.swatch.tree { background: #9ccf8f; }
.swatch.possible { background: #e8edf5; }

.report-tree {
  margin-top: 6px;
  font-size: 12.5px;
  color: #3e7a35;
}

@media (max-width: 720px) {
  #panel { width: calc(100vw - 24px); }
  #report {
    top: auto;
    bottom: 12px;
    right: 12px;
    left: 12px;
    width: auto;
    max-height: 55vh;
  }
}

/* ---- sun-hours heatmap -------------------------------------------------- */

#toggle-heatmap.active {
  background: var(--gold);
  border-color: #dfae3a;
  font-weight: 600;
}

.heatmap-legend {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  font-size: 11px;
  color: var(--muted);
}
.heatmap-legend[hidden] { display: none; }
.heatmap-gradient {
  flex: 1;
  height: 10px;
  border-radius: 5px;
  /* Keep in sync with COLOR_STOPS in src/heatmap.js. */
  background: linear-gradient(to right, #0c1040 0%, #146e82 35%, #46aa5a 65%, #ffdc50 100%);
}