/* Polaris — a compact planning rail with persistent actions. */
#panel {
  width: 360px;
  flex: 0 0 auto;
  min-height: 0;
  height: 100%;
  overflow-y: auto;
  /* Keep scrollIntoView targets above the sticky actions and their fade. */
  scroll-padding-bottom: calc(144px + env(safe-area-inset-bottom, 0px));
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
  background: var(--bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 1000; /* above Leaflet */
}

.panel-body {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  padding: var(--s-4);
}

.panel-brand { display: flex; align-items: center; gap: var(--s-3); }

#logo {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  fill: var(--star);
  filter: drop-shadow(0 0 8px var(--star-glow));
}

.panel-brand h1 { font-size: 17px; letter-spacing: 0.22em; }
.panel-brand .tagline { font-size: 11px; letter-spacing: 0.03em; }

.lede {
  color: var(--text-muted);
  font-size: 11.5px;
  line-height: 1.5;
  margin-bottom: var(--s-1);
}

/* Cards keep the planning steps distinct without competing with the map. */
.group, #panel .stops, #results {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--s-4);
  min-width: 0;
}

.group { display: flex; flex-direction: column; gap: var(--s-3); }

.group-label {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: normal;
  text-transform: none;
  margin-bottom: var(--s-1);
}

.step-number {
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm);
  background: var(--surface-2);
  color: var(--accent-text);
  font: 12px/1 var(--font-mono);
}

#empty-state {
  gap: var(--s-2);
  border-color: var(--accent);
  background: linear-gradient(125deg, var(--accent-soft), transparent), var(--surface-1);
}

.callout-title { color: var(--accent-text); font-size: 12px; letter-spacing: normal; text-transform: none; }

.route-options > summary, .legal-details > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-2);
  list-style: none;
  cursor: pointer;
  border-radius: var(--r-sm);
}

.route-options > summary::-webkit-details-marker,
.legal-details > summary::-webkit-details-marker { display: none; }

.route-options > summary::after, .legal-details > summary::after {
  content: "";
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(-45deg);
  transition: transform var(--dur) var(--ease);
}

.route-options[open] > summary::after,
.legal-details[open] > summary::after { transform: rotate(45deg); }

.route-options > summary { color: var(--text-muted); font-size: 12px; min-height: 32px; }
.route-options > summary:hover, .legal-details > summary:hover { color: var(--text); }
.options-fields { display: flex; flex-direction: column; gap: var(--s-2); padding-top: var(--s-3); }

.panel-footer {
  padding: var(--s-1) var(--s-1) var(--s-2);
  font-size: 10px;
  line-height: 1.6;
  color: var(--text-muted);
}

.panel-footer a { display: inline-flex; align-items: center; color: var(--text-muted); text-decoration: none; }
.panel-footer a:hover { color: var(--accent-text); text-decoration: underline; }
.legal-details { margin-top: var(--s-2); }
.legal-details > summary { justify-content: flex-start; width: fit-content; }
.legal { display: block; margin-top: var(--s-2); font-size: 10px; }

/* Last in document order, so the sticky rail spans all planning and results. */
.panel-actions {
  position: sticky;
  bottom: 0;
  z-index: 2;
  flex: 0 0 auto;
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  padding: var(--s-3) var(--s-4) max(var(--s-3), env(safe-area-inset-bottom));
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.panel-actions::before {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 0;
  right: 0;
  height: 24px;
  background: linear-gradient(to bottom, transparent, var(--bg));
  pointer-events: none;
}