/* Chainage — TekSwipe Traffic. Mobile-first, light/dark. */
:root {
  color-scheme: light;
  --bg: #f1f5f9;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --surface-glass: rgba(255, 255, 255, 0.92);
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --brand: #1d4ed8;
  --brand-2: #13b5c9;
  --accent: #f59e0b;
  --on-road: #16a34a;
  --near: #f59e0b;
  --far: #ef4444;
  --none: #64748b;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.12);
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.08);
  --radius: 16px;
  --radius-sm: 10px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-top: env(safe-area-inset-top, 0px);
}
[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1220;
  --surface: #111a2e;
  --surface-2: #0e1626;
  --surface-glass: rgba(17, 26, 46, 0.92);
  --text: #e8eef9;
  --text-muted: #94a3b8;
  --border: #24314d;
  --brand: #5b8def;
  --brand-2: #2dd4ef;
  --accent: #fbbf24;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}
button { font-family: inherit; cursor: pointer; }
a { color: var(--brand); }

/* ---------- App shell ---------- */
#app { position: fixed; inset: 0; display: flex; flex-direction: column; }

header.topbar {
  display: flex; align-items: center; gap: 10px;
  padding: calc(8px + var(--safe-top)) 14px 8px;
  background: var(--surface-glass);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 30;
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; color: var(--text); }
.brand-logo { display: inline-flex; flex: none; }
.brand img { width: 34px; height: 34px; border-radius: 9px; box-shadow: var(--shadow-sm); display: block; }
.brand .titles { display: flex; flex-direction: column; line-height: 1.08; min-width: 0; }
.brand .app-name { font-weight: 800; font-size: 1.12rem; letter-spacing: -0.02em; text-decoration: none; color: var(--text); }
.brand .by { font-size: 0.68rem; color: var(--text-muted); white-space: nowrap; }
.brand .by a { color: var(--brand-2); text-decoration: none; font-weight: 700; white-space: nowrap; }
.spacer { flex: 1; }
.iconbtn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 11px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text); box-shadow: var(--shadow-sm);
}
.iconbtn:active { transform: scale(0.95); }
.iconbtn svg { width: 20px; height: 20px; }

/* ---------- Map ---------- */
.map-wrap { position: relative; flex: 1; }
#map { position: absolute; inset: 0; background: var(--surface-2); }
/* OpenFreeMap has no dark style, so emulate a night map by inverting luminance
   (invert) then restoring hues (hue-rotate 180). Only the tile canvas is
   affected — DOM markers, controls and attribution stay upright/legible. */
[data-theme="dark"] #map canvas { filter: invert(1) hue-rotate(180deg) brightness(0.95) contrast(0.9) saturate(0.85); }
.maplibregl-ctrl-attrib { font-size: 10px; }

/* status pill that floats over the map after locating */
.float-status {
  position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
  max-width: calc(100% - 24px);
  display: none; align-items: center; gap: 8px;
  padding: 8px 14px; border-radius: 999px;
  background: var(--surface-glass); backdrop-filter: blur(10px);
  box-shadow: var(--shadow); border: 1px solid var(--border);
  font-size: 0.86rem; font-weight: 600; z-index: 18; white-space: nowrap;
}
.float-status.show { display: inline-flex; }
.float-status.live { cursor: pointer; }
.dot { width: 10px; height: 10px; border-radius: 50%; flex: none; }
.float-status.live .dot { background: var(--on-road) !important; animation: pulse 1.6s infinite; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(22,163,74,0.55); }
  70% { box-shadow: 0 0 0 9px rgba(22,163,74,0); }
  100% { box-shadow: 0 0 0 0 rgba(22,163,74,0); }
}

/* Big locate button */
.locate-fab {
  position: absolute; left: 50%; transform: translateX(-50%);
  bottom: calc(20px + var(--safe-bottom));
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px; border: none; border-radius: 999px;
  background: linear-gradient(135deg, var(--brand-2), var(--brand));
  color: #fff; font-weight: 800; font-size: 1rem;
  box-shadow: 0 8px 24px rgba(29, 78, 216, 0.45); z-index: 20;
}
.locate-fab:active { transform: translateX(-50%) scale(0.97); }
.locate-fab svg { width: 20px; height: 20px; }
.locate-fab[disabled] { opacity: 0.7; }
/* Live tracking → green button + pulsing GPS dot before the label */
.locate-fab.tracking { background: linear-gradient(135deg, #22c55e, #059669); box-shadow: 0 8px 24px rgba(5,150,105,0.45); }
.locate-fab.tracking::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: #fff; animation: pulse-w 1.6s infinite; }
@keyframes pulse-w {
  0% { box-shadow: 0 0 0 0 rgba(255,255,255,0.7); }
  70% { box-shadow: 0 0 0 8px rgba(255,255,255,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,255,255,0); }
}

.mini-fab {
  position: absolute; right: 14px; z-index: 20;
  width: 46px; height: 46px; border-radius: 14px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border); box-shadow: var(--shadow);
}
.mini-fab svg { width: 22px; height: 22px; }
/* Sit above the map zoom controls (bottom-right) so they're not covered. */
.mini-fab.search { bottom: calc(108px + var(--safe-bottom)); }
body.sheet-open .locate-fab, body.sheet-open .mini-fab.search { opacity: 0; pointer-events: none; transition: opacity 0.2s; }

/* ---------- Bottom sheet (result) ---------- */
.sheet {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 25;
  background: var(--surface);
  border-radius: 22px 22px 0 0;
  box-shadow: var(--shadow);
  border-top: 1px solid var(--border);
  transform: translateY(110%);
  transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
  max-height: 78%; display: flex; flex-direction: column;
  padding-bottom: var(--safe-bottom);
}
.sheet.open { transform: translateY(0); }
.sheet .grabber { width: 42px; height: 5px; border-radius: 3px; background: var(--border); margin: 10px auto 4px; flex: none; }
.sheet .sheet-body { overflow-y: auto; padding: 6px 18px 18px; }

/* Badge stacked ABOVE the title so the road name + distance never get squished. */
.result-head { position: relative; padding-right: 42px; }
.result-head #sheetClose { position: absolute; top: 0; right: 0; flex: none; }
.status-badge {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 12px; border-radius: 999px; color: #fff; font-weight: 800; font-size: 0.82rem;
  margin-bottom: 8px;
}
.result-title { font-size: 1.18rem; font-weight: 800; letter-spacing: -0.01em; margin: 0; }
.result-msg { color: var(--text-muted); font-size: 0.92rem; margin: 6px 0 0; line-height: 1.4; }

.chainage-hero {
  margin: 14px 0; padding: 16px; border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(19,181,201,0.12), rgba(29,78,216,0.12));
  border: 1px solid var(--border); text-align: center;
}
.chainage-hero .label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); font-weight: 700; }
.chainage-hero .value-row { display: flex; align-items: center; justify-content: center; gap: 10px; margin-top: 2px; }
.chainage-hero .value { font-size: 2.2rem; font-weight: 900; letter-spacing: -0.02em; }
.chainage-hero .sub { font-size: 0.84rem; color: var(--text-muted); margin-top: 2px; }
.copy-chip {
  flex: none; width: 34px; height: 34px; border-radius: 9px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); background: var(--surface); color: var(--text-muted); box-shadow: var(--shadow-sm);
}
.copy-chip svg { width: 17px; height: 17px; }
.copy-chip:active { transform: scale(0.92); }
.share-url { width: 100%; padding: 11px 12px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text); font-size: 0.9rem; margin-top: 10px; }

.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.fact { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 12px; }
.fact .k { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); font-weight: 700; }
.fact .v { font-size: 0.98rem; font-weight: 700; margin-top: 3px; word-break: break-word; }
.fact.wide { grid-column: 1 / -1; }

.actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 14px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 14px; border-radius: 12px; font-weight: 700; font-size: 0.9rem;
  border: 1px solid var(--border); background: var(--surface-2); color: var(--text); text-decoration: none;
}
.btn.primary { background: linear-gradient(135deg, var(--brand-2), var(--brand)); color: #fff; border: none; }
.btn.wide { grid-column: 1 / -1; }
.btn svg { width: 18px; height: 18px; }
.btn:active { transform: scale(0.98); }

/* ---------- Search panel ---------- */
.panel {
  position: absolute; inset: 0; z-index: 40; display: none; flex-direction: column;
  background: var(--bg);
}
.panel.open { display: flex; }
.panel-head { display: flex; align-items: center; gap: 10px; padding: calc(10px + var(--safe-top)) 14px 10px; border-bottom: 1px solid var(--border); background: var(--surface); }
.panel-head h2 { font-size: 1.05rem; margin: 0; flex: 1; }
.search-input-wrap { display: flex; gap: 8px; padding: 12px 14px; }
.search-input-wrap input {
  flex: 1; padding: 13px 14px; border-radius: 12px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); font-size: 1rem;
}
.search-input-wrap input:focus { outline: 2px solid var(--brand); border-color: var(--brand); }
.results { overflow-y: auto; padding: 0 14px 20px; flex: 1; }
.road-item {
  display: flex; align-items: center; gap: 12px; width: 100%; text-align: left;
  padding: 14px 12px; border-radius: 12px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); margin-bottom: 8px;
}
.road-item:active { background: var(--surface-2); }
.road-item .ri-name { font-weight: 700; }
.road-item .ri-meta { font-size: 0.78rem; color: var(--text-muted); margin-top: 2px; }
.road-item .ri-go { margin-left: auto; color: var(--brand); flex: none; }
.chainage-ask { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; margin-bottom: 12px; }
.chainage-ask label { font-size: 0.8rem; color: var(--text-muted); font-weight: 700; }
.chainage-ask .row { display: flex; gap: 8px; margin-top: 8px; }
.chainage-ask input { flex: 1; padding: 12px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text); font-size: 1rem; }
.hint { color: var(--text-muted); font-size: 0.78rem; padding: 8px 2px; }
.empty { text-align: center; color: var(--text-muted); padding: 40px 20px; }

/* ---------- Modal (help / google embed) ---------- */
.modal-backdrop {
  position: absolute; inset: 0; z-index: 50; display: none;
  align-items: center; justify-content: center; padding: 16px;
  background: rgba(2, 6, 23, 0.55); backdrop-filter: blur(3px);
}
.modal-backdrop.open { display: flex; }
.modal {
  width: 100%; max-width: 460px; max-height: 86%; overflow-y: auto;
  background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow);
  border: 1px solid var(--border); padding: 20px;
}
.modal h3 { margin: 0 0 6px; font-size: 1.15rem; }
.modal p { color: var(--text-muted); font-size: 0.92rem; line-height: 1.5; }
.modal ol { padding-left: 20px; line-height: 1.6; font-size: 0.92rem; }
.modal .tabs { display: flex; gap: 8px; margin: 12px 0; }
.modal .tab { flex: 1; padding: 9px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface-2); font-weight: 700; font-size: 0.85rem; color: var(--text); }
.modal .tab.active { background: var(--brand); color: #fff; border-color: var(--brand); }
.modal .embed-frame { width: 100%; aspect-ratio: 4 / 3; border: 0; border-radius: 12px; margin-top: 8px; background: var(--surface-2); }
.modal-close { float: right; }

/* ---------- Toast ---------- */
.toast {
  position: absolute; bottom: calc(90px + var(--safe-bottom)); left: 50%; transform: translateX(-50%) translateY(20px);
  background: #0f172a; color: #fff; padding: 11px 18px; border-radius: 999px; font-size: 0.86rem; font-weight: 600;
  z-index: 60; opacity: 0; transition: all 0.25s; pointer-events: none; max-width: calc(100% - 32px); text-align: center;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- spinner ---------- */
.spinner { width: 18px; height: 18px; border: 2.5px solid rgba(255,255,255,0.4); border-top-color: #fff; border-radius: 50%; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* user location dot (blue) */
.user-marker { width: 18px; height: 18px; border-radius: 50%; background: #2563eb; border: 3px solid #fff; box-shadow: 0 0 0 2px rgba(37,99,235,0.4), 0 2px 6px rgba(0,0,0,0.4); }

/* chainage pin: a labelled teardrop whose tip marks the snapped road point */
.chainage-pin { display: flex; flex-direction: column; align-items: center; filter: drop-shadow(0 3px 5px rgba(0,0,0,0.45)); }
.chainage-pin .cp-label {
  background: var(--accent); color: #1f2937; font-weight: 800; font-size: 0.78rem; line-height: 1;
  padding: 6px 10px; border-radius: 999px; white-space: nowrap; border: 2px solid #fff;
}
.chainage-pin .cp-stem { width: 0; height: 0; border-left: 7px solid transparent; border-right: 7px solid transparent; border-top: 10px solid var(--accent); margin-top: -1px; }

/* marker dropped exactly where the user tapped/clicked (off-road) */
.tap-marker { width: 14px; height: 14px; border-radius: 50%; background: #475569; border: 3px solid #fff; box-shadow: 0 2px 5px rgba(0,0,0,0.45); }

/* active state for header toggle buttons (e.g. road overlay on) */
.iconbtn.active { background: var(--brand); color: #fff; border-color: var(--brand); }

/* "jump to a chainage on this road" control inside the result card */
.chainage-jump { margin-top: 14px; padding: 12px 14px; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); }
.chainage-jump .cj-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); font-weight: 700; }
.chainage-jump .cj-row { display: flex; gap: 8px; margin-top: 8px; }
.chainage-jump input { flex: 1; min-width: 0; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface); color: var(--text); font-size: 1rem; }
.cj-ends { display: flex; gap: 8px; margin-top: 8px; }
.cj-ends .btn { flex: 1; padding: 9px; }

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

@media (min-width: 720px) {
  /* Result card sits as a LEFT panel so the map pin (centre/right) stays visible. */
  .sheet {
    left: 16px; right: auto; top: 76px; bottom: 16px;
    width: 380px; max-width: 40vw; max-height: none;
    border-radius: 18px; border: 1px solid var(--border);
    transform: translateX(-120%);
  }
  .sheet.open { transform: translateX(0); }
  .sheet .grabber { display: none; }
  .panel { left: auto; right: 16px; top: 70px; bottom: 16px; width: 420px; border-radius: var(--radius); border: 1px solid var(--border); overflow: hidden; }
}