/* kamerafrei UI — tokens and structure per docs/UI.md + redesign spec.
 * Surfaces: #query-card (always) · #results (card / bottom sheet, per route)
 * · #about (modal, on demand) · #toast (momentary) · map controls. */

:root {
  --brand: #14532d;
  --route: #16a34a;
  --exposure: #dc2626;
  --gps: #2563eb;
  --ink-1: #111827;
  --ink-2: #4b5563;
  --ink-3: #9ca3af;
  --line: #e5e7eb;
  --surface: rgba(255, 255, 255, 0.96);
}

* { box-sizing: border-box; }

/* the hidden attribute must win over display rules */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  height: 100%;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink-1);
}

#map { height: 100%; }

button { font-family: inherit; }

/* ---------------- left column: query + results ------------------------- */

#left-col {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 1000;
  width: 384px;
  max-height: calc(100% - 32px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: none; /* children re-enable */
}

#query-card, #results {
  pointer-events: auto;
  background: var(--surface);
  backdrop-filter: blur(6px);
  border-radius: 14px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  padding: 16px;
}

/* ---------------- query card ------------------------------------------- */

#query-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

#query-header h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--brand);
  letter-spacing: 0.03em;
  flex: 0 0 auto;
}

#chip-summary {
  flex: 1;
  min-width: 0;
  font-size: 13px;
  color: var(--ink-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

#about-btn, #panel-toggle, #chip-clear, #about-close {
  border: none;
  background: transparent;
  font-size: 16px;
  line-height: 1;
  padding: 6px;
  cursor: pointer;
  color: var(--ink-2);
  border-radius: 8px;
}

#about-btn:hover, #panel-toggle:hover, #chip-clear:hover { background: #f3f4f6; }

#panel-toggle { transition: transform 0.15s; margin-left: auto; }
#query-card.collapsed #panel-toggle { transform: rotate(-90deg); }
#query-card.collapsed #query-body { display: none; }

#tagline {
  margin: 6px 0 10px;
  font-size: 13px;
  color: var(--ink-2);
}

.search { position: relative; margin: 0 0 8px; }

.search input {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 15px;
  background: #fff;
}

.search input:focus { outline: 2px solid var(--brand); border-color: transparent; }

.results {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + 2px);
  z-index: 1100;
  margin: 0;
  padding: 4px 0;
  list-style: none;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
  max-height: 220px;
  overflow-y: auto;
}

.results li { padding: 8px 12px; font-size: 13px; cursor: pointer; }
.results li:hover { background: #f0fdf4; }
.results li.hint { color: var(--ink-2); cursor: default; }
.results li.hint:hover { background: none; }

.row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
}

.seg-group { display: flex; gap: 6px; }

.seg input { display: none; }

.seg span {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 12px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 13.5px;
  cursor: pointer;
  user-select: none;
  background: #fff;
}

.seg input:checked + span {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}

#clear {
  margin-left: auto;
  height: 36px;
  border: 1px solid #d1d5db;
  background: #fff;
  border-radius: 8px;
  padding: 0 12px;
  font-size: 13.5px;
  cursor: pointer;
}

#clear:hover { background: #f3f4f6; }

#hint {
  min-height: 18px;
  font-size: 12.5px;
  color: #6b7280;
  margin: 2px 0 0;
}

#hint.error { color: var(--exposure); }

#progress {
  position: relative;
  height: 3px;
  margin: 10px -16px -16px;
  border-radius: 0 0 14px 14px;
  overflow: hidden;
  background: var(--line);
}

/* browsers that buffer SW-piped downloads deliver no incremental chunks;
   the shimmer shows life even when the fill can't move */
#progress::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(20, 83, 45, 0.35), transparent);
  animation: prog-slide 1.2s linear infinite;
}

@keyframes prog-slide {
  from { transform: translateX(-100%); }
  to { transform: translateX(100%); }
}

#progress-bar {
  display: block;
  height: 100%;
  width: 0;
  background: var(--brand);
  transition: width 0.3s;
}

/* ---------------- results card / sheet ---------------------------------- */

#results { overflow-y: auto; }

#sheet-handle { display: none; } /* mobile only */

#status {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.45;
  margin: 0 0 10px;
}

#status .hero-bad { color: var(--exposure); font-size: 17px; }
#status .hero-good { color: var(--route); font-size: 20px; font-weight: 700; }
#status .good { color: var(--route); }
#status.error { color: var(--exposure); font-size: 13.5px; font-weight: 400; }

.slider-row label { font-size: 13px; white-space: nowrap; color: var(--ink-2); }
.slider-row input { flex: 1; }
#alpha-value { font-size: 13px; font-weight: 600; min-width: 52px; text-align: right; }

#stats {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin: 0 0 10px;
  font-variant-numeric: tabular-nums;
}

#stats th, #stats td {
  text-align: right;
  padding: 6px 4px;
  border-bottom: 1px solid var(--line);
}

#stats td:first-child { text-align: left; color: var(--ink-2); }
#stats .c-short { color: #6b7280; }
#stats .c-avoid { color: #15803d; }

#stats.single th:nth-child(3),
#stats.single td:nth-child(3) { display: none; }

#route-actions button {
  flex: 1;
  height: 40px;
  border: 1px solid #d1d5db;
  background: #fff;
  border-radius: 8px;
  font-size: 13.5px;
  cursor: pointer;
}

#route-actions button:hover { background: #f3f4f6; }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  font-size: 11.5px;
  color: var(--ink-2);
  margin: 0 0 8px;
}

.legend .sw {
  display: inline-block;
  width: 18px;
  height: 4px;
  border-radius: 2px;
  vertical-align: middle;
  margin-right: 4px;
}

.sw-short { background: #6b7280; }
.sw-avoid { background: var(--route); }
.sw-exposed { background: var(--exposure); }

.legend .dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--exposure);
  opacity: 0.7;
  vertical-align: middle;
  margin-right: 4px;
}

#results-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 11px;
  color: var(--ink-3);
}

#known-note {
  border: none;
  background: none;
  font-size: 11px;
  color: var(--ink-3);
  cursor: pointer;
  padding: 4px 0;
  text-decoration: underline dotted;
}

/* ---------------- about modal ------------------------------------------- */

#about { position: fixed; inset: 0; z-index: 1300; }

#about-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
}

#about-dialog {
  position: relative;
  margin: 8vh auto 0;
  max-width: 520px;
  max-height: 80vh;
  overflow-y: auto;
  background: #fff;
  border-radius: 14px;
  padding: 20px 24px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

#about-head { display: flex; align-items: center; justify-content: space-between; }

#about-dialog h2 {
  margin: 0;
  font-size: 18px;
  color: var(--brand);
}

#about-dialog h3 {
  margin: 16px 0 4px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-2);
}

#about-dialog p { margin: 6px 0; font-size: 13.5px; line-height: 1.55; }
#about-dialog .legend { margin-top: 14px; }

/* ---------------- toast -------------------------------------------------- */

#toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  z-index: 1200;
  max-width: min(90vw, 420px);
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--ink-1);
  color: #fff;
  font-size: 13px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  transition: opacity 0.15s, transform 0.15s;
  user-select: text;
  word-break: break-all;
  text-align: center;
}

#toast.error { background: #7f1d1d; }
#toast.fading { opacity: 0; transform: translateX(-50%) translateY(4px); }

/* ---------------- map controls ------------------------------------------- */

.map-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  font-size: 20px;
  color: #333;
  user-select: none;
  margin-top: 8px;
}

.heat-ctl input { display: none; }
.heat-ctl:has(input:checked) { background: var(--brand); color: #fff; }

.locate-btn { text-decoration: none; }
.locate-btn.following { background: var(--gps); color: #fff; }
.locate-btn.watching { color: var(--gps); }

/* markers */
.marker-pin {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.marker-pin span { transform: rotate(45deg); }
.marker-a { background: var(--route); }
.marker-b { background: var(--exposure); }

/* ---------------- mobile ------------------------------------------------- */

@media (max-width: 640px) {
  #left-col {
    top: 12px;
    left: 12px;
    right: 12px;
    width: auto;
    max-height: none;
    pointer-events: none;
  }

  #query-card { padding: 12px 14px; }
  #query-header h1 { font-size: 16px; }
  .search input { font-size: 16px; } /* prevents iOS focus zoom */

  /* results become a bottom sheet with peek/open detents */
  #results {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    border-radius: 16px 16px 0 0;
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.15);
    max-height: 55vh;
    padding: 0 16px calc(12px + env(safe-area-inset-bottom));
    transform: translateY(calc(100% - 108px));
    transition: transform 0.2s ease-out;
    overflow-y: hidden;
  }

  #results.open { transform: translateY(0); overflow-y: auto; }
  #results.dragging { transition: none; }

  #sheet-handle {
    display: block;
    width: 100%;
    height: 24px;
    padding: 10px 0 0;
    border: none;
    background: none;
    cursor: grab;
    touch-action: none;
  }

  #sheet-handle span {
    display: block;
    width: 36px;
    height: 4px;
    margin: 0 auto;
    border-radius: 2px;
    background: #d1d5db;
  }

  #status { margin-top: 2px; }

  /* lift leaflet chrome + toast above the sheet peek — only while routed */
  body.routed .leaflet-bottom { bottom: 100px; }

  body.routed #toast { bottom: 116px; }
}