:root {
  --panel-bg: rgba(255, 255, 255, 0.92);
  --panel-border: rgba(24, 39, 75, 0.2);
  --text: #1f2937;
  --muted: #4b5563;
}

* {
  box-sizing: border-box;
}

html,
body,
#map {
  width: 100%;
  height: 100%;
  margin: 0;
}

body {
  font-family: "IBM Plex Sans", "Segoe UI", Tahoma, sans-serif;
  color: var(--text);
}

.overview-control {
  font-family: "IBM Plex Sans", "Segoe UI", Tahoma, sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  line-height: 1;
}

.panel {
  position: fixed;
  top: 12px;
  left: 12px;
  width: min(220px, calc(100vw - 24px));
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  box-shadow: 0 8px 26px rgba(15, 23, 42, 0.14);
  padding: 12px;
  backdrop-filter: blur(3px);
  z-index: 2;
}

.panel-toggle {
  display: none;
  appearance: none;
  border: 1px solid rgba(15, 23, 42, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  padding: 7px 12px;
}

.panel-body {
  display: block;
}

.layer-switcher {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-bottom: 12px;
}

.layer-toggle {
  appearance: none;
  border: 1px solid rgba(15, 23, 42, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 8px 10px;
  transition: background-color 120ms ease, color 120ms ease, border-color 120ms ease;
}

.layer-toggle:hover {
  border-color: rgba(15, 23, 42, 0.24);
}

.layer-toggle.is-active {
  background: #111827;
  border-color: #111827;
  color: #f9fafb;
}

.status {
  color: var(--muted);
  margin: 0 0 10px;
  font-size: 0.82rem;
  line-height: 1.35;
}

.panel h1 {
  margin: 0 0 6px;
  font-size: 1rem;
}

.panel p {
  margin: 0;
  font-size: 0.9rem;
}

.legend {
  display: grid;
  gap: 4px;
  margin-bottom: 8px;
}

.legend-row {
  display: grid;
  grid-template-columns: 14px 1fr;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
}

.legend-swatch {
  width: 14px;
  height: 14px;
  border-radius: 2px;
  border: 1px solid rgba(0, 0, 0, 0.18);
}

.hint {
  color: var(--muted);
}

@media (max-width: 720px) {
  .panel {
    top: 8px;
    left: 8px;
    width: auto;
    max-width: calc(100vw - 16px);
    padding: 8px;
  }

  .panel-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .panel.panel-collapsed .panel-body {
    display: none;
  }

  .panel:not(.panel-collapsed) {
    width: min(220px, calc(100vw - 16px));
    padding: 10px;
  }

  .panel:not(.panel-collapsed) .panel-toggle {
    margin-bottom: 10px;
  }
}