/* ALPR Route Planner. Light and dark themes follow the system setting. */
:root {
  --text: #0f172a;
  --muted: #64748b;
  --bg: #f1f5f9;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --border: #e2e8f0;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-text: #ffffff;
  --focus: rgba(37, 99, 235, 0.35);
  --error: #b91c1c;
  --error-bg: #fef2f2;
  --good: #15803d;
  --good-bg: #f0fdf4;
  --bad: #be123c;
  --bad-bg: #fff1f2;
  --banner-bg: #fffbeb;
  --banner-text: #92400e;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 4px 16px rgba(15, 23, 42, 0.08);
  --radius: 12px;

  /* Map colors; keep in step with COLORS in view.js. */
  --flock: #e11d48;
  --other: #f59e0b;
  --hit: #111827;
  --fastest: #64748b;
  --avoiding: #2563eb;
  --start: #16a34a;
  --end: #7c3aed;

  --icon-locate: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='7'/%3E%3Ccircle cx='12' cy='12' r='2.5' fill='black'/%3E%3Cpath d='M12 2v3M12 19v3M2 12h3M19 12h3'/%3E%3C/svg%3E");
  --icon-swap: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M7 4v16M3 8l4-4 4 4M17 20V4M13 16l4 4 4-4'/%3E%3C/svg%3E");
  --logo: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3Crect width='64' height='64' rx='16' fill='%232563eb'/%3E%3Cpath d='M16 50c0-12 4-16 12-18s10-8 6-14' fill='none' stroke='white' stroke-width='5' stroke-linecap='round'/%3E%3Cpath d='M34 18c8-4 14 0 14 8' fill='none' stroke='white' stroke-width='5' stroke-linecap='round' stroke-dasharray='0.1 9'/%3E%3Ccircle cx='44' cy='40' r='7' fill='%23fb7185' stroke='white' stroke-width='3'/%3E%3Ccircle cx='16' cy='50' r='4' fill='white'/%3E%3C/svg%3E");
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #e2e8f0;
    --muted: #94a3b8;
    --bg: #0b1220;
    --surface: #111a2e;
    --surface-2: #0f172a;
    --border: #1e293b;
    --primary: #3b82f6;
    --primary-hover: #60a5fa;
    --focus: rgba(96, 165, 250, 0.4);
    --error: #fca5a5;
    --error-bg: #3b1212;
    --good: #86efac;
    --good-bg: #0f2a1a;
    --bad: #fda4af;
    --bad-bg: #3a0f1c;
    --banner-bg: #2d2208;
    --banner-text: #fcd34d;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

a { color: var(--primary); }

#layout {
  position: relative;
  height: 100%;
  overflow: hidden;
}

#map {
  position: absolute;
  inset: 0;
  background: #dfe6ee;
}

/* ---- Panel (desktop: floating card on the left) ---- */

#panel {
  position: absolute;
  z-index: 1000;
  top: 16px;
  left: 16px;
  width: 380px;
  max-height: calc(100% - 32px);
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--bg);
  border-radius: 18px;
  box-shadow: var(--shadow);
  scrollbar-width: thin;
}

.sheet-handle { display: none; }

.brand { display: flex; align-items: center; gap: 12px; padding: 2px 4px; }
.logo {
  width: 40px;
  height: 40px;
  flex: none;
  background: var(--logo) center / contain no-repeat;
}
h1 { font-size: 18px; line-height: 1.2; margin: 0; letter-spacing: -0.01em; }
.tagline { margin: 2px 0 0; color: var(--muted); font-size: 13px; }

h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin: 0 0 10px; }
p { margin: 6px 0; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
}

.banner {
  margin: 0;
  padding: 10px 12px;
  border-radius: var(--radius);
  background: var(--banner-bg);
  color: var(--banner-text);
  font-size: 13px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---- Start / destination ---- */

.stops { display: flex; flex-direction: column; gap: 8px; }

.stop {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
}

.stop-dot {
  width: 12px;
  height: 12px;
  flex: none;
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--surface), 0 0 0 4px var(--border);
}
.stop-start { background: var(--start); }
.stop-end { background: var(--end); }

.stop-field { flex: 1; min-width: 0; display: flex; flex-direction: column; }

input[type="search"] {
  width: 100%;
  font: inherit;
  color: var(--text);
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-2);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input[type="search"]:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--focus); }
input[type="search"]::placeholder { color: var(--muted); }

.stop-coords { font-size: 11px; color: var(--muted); padding: 2px 12px 0; font-variant-numeric: tabular-nums; }
.stop-coords:empty { display: none; }

/* Keeps both rows the same width when there is no locate button. */
.stop .icon-button[hidden] { display: grid; visibility: hidden; }

.search-results {
  position: absolute;
  z-index: 20;
  top: calc(100% + 4px);
  left: 22px;
  right: 48px;
  margin: 0;
  padding: 4px;
  list-style: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
  max-height: 260px;
  overflow-y: auto;
}
.search-results li { margin: 0; }
.search-results button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text);
}
.search-results button:hover, .search-results button:focus-visible { background: var(--surface-2); outline: none; }
.search-results .place-name { display: block; font-weight: 600; }
.search-results .place-detail { display: block; font-size: 12px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.search-results .empty { padding: 8px 10px; color: var(--muted); font-size: 13px; }

.hint { color: var(--muted); font-size: 13px; margin: 10px 0 0; }

/* ---- Slider ---- */

.field { margin-top: 12px; }
.field-row { display: flex; justify-content: space-between; align-items: baseline; font-size: 13px; }
.field-row output { font-weight: 600; font-variant-numeric: tabular-nums; }
#buffer { width: 100%; margin: 8px 0 0; accent-color: var(--primary); }

/* ---- Buttons ---- */

button { font: inherit; cursor: pointer; }
button:focus-visible { outline: 3px solid var(--focus); outline-offset: 1px; }

.buttons { display: flex; gap: 8px; margin-top: 14px; }

.primary, .secondary {
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 600;
  transition: background 0.15s, opacity 0.15s;
}
.primary {
  flex: 1;
  border: 0;
  background: var(--primary);
  color: var(--primary-text);
}
.primary:not(:disabled):hover { background: var(--primary-hover); }
.primary:disabled { opacity: 0.45; cursor: default; }
.primary.busy::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 14px;
  margin-right: 8px;
  vertical-align: -2px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.secondary { border: 1px solid var(--border); background: var(--surface); color: var(--text); }
.secondary:hover { border-color: var(--muted); }

.examples { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.examples .secondary { padding: 6px 10px; font-size: 13px; }
.banner a { color: inherit; }

.icon-button {
  flex: none;
  width: 38px;
  height: 38px;
  padding: 0;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-2);
  color: var(--muted);
}
.icon-button:hover { color: var(--primary); border-color: var(--primary); }
.icon-button.busy .icon { animation: pulse 1s ease-in-out infinite; }

.icon {
  display: inline-block;
  width: 18px;
  height: 18px;
  background: currentColor;
  -webkit-mask: var(--icon) center / contain no-repeat;
  mask: var(--icon) center / contain no-repeat;
}
.icon-locate { --icon: var(--icon-locate); }
.icon-swap { --icon: var(--icon-swap); width: 16px; height: 16px; }

.error {
  margin: 12px 0 0;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--error-bg);
  color: var(--error);
  font-size: 13px;
  font-weight: 600;
}

/* ---- Results ---- */

.result {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  margin: 8px 0 0;
  background: var(--surface-2);
}
.result:first-child { margin-top: 0; }
.result.recommended { border-color: var(--primary); box-shadow: inset 3px 0 0 var(--primary); }
.result h3 { font-size: 14px; margin: 0 0 4px; display: flex; align-items: center; gap: 8px; }
.result .stats { margin: 0; color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.result .badges { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
}
.badge.good { background: var(--good-bg); color: var(--good); border-color: transparent; }
.badge.bad { background: var(--bad-bg); color: var(--bad); border-color: transparent; }

.summary { margin: 10px 0 0; font-size: 13px; }
.notes { margin: 8px 0 0; padding-left: 18px; font-size: 13px; color: var(--muted); }
.note { font-size: 12px; color: var(--muted); }

/* ---- Map key / about ---- */

.disclosure { padding: 0; }
.disclosure summary {
  list-style: none;
  cursor: pointer;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.disclosure summary::-webkit-details-marker { display: none; }
.disclosure summary::after { content: "+"; color: var(--muted); font-size: 18px; line-height: 1; }
.disclosure[open] summary::after { content: "\2212"; }
.disclosure summary h2 { margin: 0; }
.disclosure > :not(summary) { margin-left: 14px; margin-right: 14px; }
.disclosure > :last-child { margin-bottom: 14px; }
.disclosure p { font-size: 13px; }

.legend { list-style: none; margin: 0; padding: 0; font-size: 14px; }
.legend li { display: flex; align-items: center; gap: 10px; margin: 6px 0; }

.swatch { display: inline-block; flex: none; }
.swatch.dot { width: 12px; height: 12px; border-radius: 50%; border: 1.5px solid #fff; box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.15); }
.swatch.flock { background: var(--flock); }
.swatch.other { background: var(--other); }
.swatch.hit { background: var(--flock); border: 3px solid var(--hit); width: 16px; height: 16px; }
.swatch.line { width: 26px; height: 0; border-top-width: 4px; border-radius: 2px; }
.swatch.fastest { border-top-style: dashed; border-top-color: var(--fastest); }
.swatch.avoiding { border-top-style: solid; border-top-color: var(--avoiding); }

footer { padding: 0 4px; font-size: 12px; color: var(--muted); }
footer p { margin: 2px 0; }
footer a { color: inherit; }
.disclaimer b { color: var(--text); }

/* ---- Map overlays ---- */

.map-overlay {
  position: absolute;
  z-index: 900;
  top: 16px;
  left: 50%;
  transform: translateX(calc(-50% + 206px)); /* centered over the visible map, right of the panel */
  pointer-events: none;
}
.pill {
  margin: 0;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
  font-size: 13px;
  white-space: nowrap;
}

.map-button {
  position: absolute;
  z-index: 900;
  right: 16px;
  bottom: 40px;
  width: 44px;
  height: 44px;
  padding: 0;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
}
.map-button:hover { color: var(--primary); }
.map-button[hidden] { display: none; }
.map-button.busy .icon { animation: pulse 1s ease-in-out infinite; }

/* Leaflet controls in the app's style. */
.leaflet-top.leaflet-right { top: 6px; right: 6px; }
.leaflet-bar { border: 0 !important; box-shadow: var(--shadow) !important; border-radius: 12px !important; overflow: hidden; }
.leaflet-bar a { width: 40px !important; height: 40px !important; line-height: 40px !important; background: var(--surface) !important; color: var(--text) !important; border-color: var(--border) !important; }
.leaflet-control-attribution { font-size: 11px; }
.leaflet-container { font: inherit; }

/* Start / end dots on the map (Leaflet divIcon). */
.endpoint {
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.45);
}
.endpoint-start { background: var(--start); }
.endpoint-end { background: var(--end); }
.you-are-here {
  border-radius: 50%;
  background: #3b82f6;
  border: 3px solid #fff;
  box-shadow: 0 0 0 6px rgba(59, 130, 246, 0.25);
}

.leaflet-tooltip.endpoint-label { font-weight: 600; border-radius: 6px; }

.leaflet-popup-content-wrapper { border-radius: 12px; }
/* Beats Leaflet's ".leaflet-popup-content p" margins. */
.leaflet-popup-content .popup-title { font-weight: 600; margin-bottom: 4px; }
.leaflet-popup-content .popup-row { margin: 2px 0; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 50% { opacity: 0.35; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before { animation: none !important; transition: none !important; }
}

/* ---- Phones: map full screen, panel as a bottom sheet ---- */

@media (max-width: 760px) {
  #panel {
    top: auto;
    left: 0;
    right: 0;
    bottom: 0;
    width: auto;
    max-height: 62%;
    padding: 6px 12px calc(12px + env(safe-area-inset-bottom));
    border-radius: 20px 20px 0 0;
    transition: max-height 0.25s ease;
  }
  #panel.collapsed { max-height: 150px; overflow: hidden; }

  .sheet-handle {
    display: block;
    flex: none;
    align-self: center;
    width: 64px;
    height: 20px;
    padding: 0;
    border: 0;
    background: transparent;
    position: relative;
  }
  .sheet-handle::before {
    content: "";
    position: absolute;
    left: 16px;
    right: 16px;
    top: 8px;
    height: 4px;
    border-radius: 2px;
    background: var(--border);
  }

  .brand { display: none; }

  .map-overlay {
    top: calc(12px + env(safe-area-inset-top));
    transform: translateX(-50%);
  }
  .map-button { bottom: auto; top: calc(110px + env(safe-area-inset-top)); right: 10px; }
  .leaflet-top { top: env(safe-area-inset-top); }
}