/* =========================================================================
   Multi-stop Mileage Calculator
   Aesthetic: a calm trip-computer / dashboard instrument panel.
   Navigation teal for actions + route, odometer amber for the mileage readout,
   tabular monospace figures so numbers line up like a trip meter.
   ========================================================================= */

:root {
  --ink:        #16232b;   /* deep slate: header + dark surfaces */
  --ink-2:      #223038;   /* slightly lifted slate for borders on dark */
  --surface:    #f2f5f3;   /* page background */
  --card:       #ffffff;
  --line:       #e2e7e4;   /* hairline borders */
  --line-2:     #ccd4cf;
  --text:       #1b2a30;
  --muted:      #64726d;
  --accent:     #0f6e6a;   /* navigation teal: primary actions, route line */
  --accent-ink: #0a4d4a;
  --accent-soft:#e3f0ee;
  --signal:     #cf7a10;   /* odometer amber: mileage readout + leg labels */
  --signal-ink: #8a4f06;
  --signal-soft:#fbeecf;
  --danger:     #b1402c;
  --danger-soft:#f6e2dd;

  --radius:  12px;
  --radius-sm: 8px;
  --shadow:  0 1px 2px rgba(20, 35, 43, .06), 0 8px 24px -18px rgba(20, 35, 43, .35);

  --font-ui: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding-inline: 18px;
}

h2 {
  font-size: 1.02rem;
  letter-spacing: .01em;
  margin: 0;
}

code {
  font-family: var(--font-mono);
  font-size: .85em;
  background: var(--accent-soft);
  color: var(--accent-ink);
  padding: 1px 5px;
  border-radius: 5px;
}

/* ----------------------------------------------------------- header ------ */
.site-header {
  background: var(--ink);
  color: #eef3f1;
  position: sticky;
  top: 0;
  z-index: 500;
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}
.header-inner {
  display: flex;
  align-items: center;
  min-height: 58px;
  padding-block: 10px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  border-radius: 10px;
  background: linear-gradient(150deg, var(--accent), var(--accent-ink));
  color: #eafcf9;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-weight: 650; letter-spacing: .01em; }
.brand-sub {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .06em;
  text-transform: lowercase;
  color: #8fb8b3;
}

/* ----------------------------------------------------------- layout ------ */
.layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  padding-block: 20px 40px;
}
.col { display: flex; flex-direction: column; gap: 16px; min-width: 0; }

@media (min-width: 900px) {
  .layout {
    grid-template-columns: minmax(360px, 420px) 1fr;
    align-items: start;
  }
  .col-results { position: sticky; top: 78px; }
}

/* ------------------------------------------------------------ cards ------ */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}
.card-head { margin-bottom: 12px; }
.card-head--row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.card-note { color: var(--muted); font-size: .82rem; margin: 6px 0 0; }
.card-head--row .card-note { margin: 0; }
.hint { color: var(--muted); font-size: .8rem; margin: 8px 0 0; }

/* -------------------------------------------------------- paste block ---- */
.paste { margin-bottom: 14px; }
.paste > summary {
  cursor: pointer;
  font-size: .86rem;
  font-weight: 600;
  color: var(--accent-ink);
  padding: 6px 2px;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.paste > summary::before {
  content: "▸";
  font-size: .7em;
  transition: transform .15s ease;
}
.paste[open] > summary::before { transform: rotate(90deg); }
.paste > summary::-webkit-details-marker { display: none; }

.bulk, .csv-out {
  width: 100%;
  font-family: var(--font-mono);
  font-size: .82rem;
  line-height: 1.55;
  color: var(--text);
  background: #fbfcfb;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  padding: 10px 11px;
  resize: vertical;
}
.paste-actions { margin-top: 8px; }

/* -------------------------------------------------------- stops list ----- */
.stops { list-style: none; margin: 0 0 12px; padding: 0; display: flex; flex-direction: column; gap: 10px; }

.stop {
  display: grid;
  grid-template-columns: 26px 1fr auto;
  align-items: start;
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fbfcfb;
}
.stop-index {
  font-family: var(--font-mono);
  font-size: .82rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  width: 24px; height: 24px;
  border-radius: 6px;
  display: grid; place-items: center;
  margin-top: 3px;
}
.stop-fields { display: flex; flex-direction: column; gap: 7px; min-width: 0; }
.stop-controls { display: flex; flex-direction: column; gap: 5px; }

.stop-geo { font-size: .74rem; font-family: var(--font-mono); min-height: 1em; }
.stop-geo.ok    { color: var(--accent-ink); }
.stop-geo.err   { color: var(--danger); }
.stop-geo.wait  { color: var(--muted); }

/* ----------------------------------------------------------- inputs ------ */
.input {
  width: 100%;
  font: inherit;
  font-size: .92rem;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  padding: 9px 10px;
  transition: border-color .12s ease, box-shadow .12s ease;
}
.input:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.field { display: flex; flex-direction: column; gap: 5px; }
.field-label { font-size: .76rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.field-narrow { max-width: 92px; }

.rate-row { display: flex; gap: 12px; align-items: flex-end; }

.input-money { position: relative; display: block; }
.input-money .input { padding-left: 24px; font-family: var(--font-mono); }
.money-sign {
  position: absolute; left: 10px; top: 50%; transform: translateY(-50%);
  color: var(--muted); font-family: var(--font-mono); font-size: .9rem; pointer-events: none;
}

/* ---------------------------------------------------------- buttons ------ */
.btn {
  font: inherit;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  padding: 10px 16px;
  cursor: pointer;
  transition: background .12s ease, border-color .12s ease, transform .05s ease;
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--accent-soft); }
.btn-wide { width: 100%; }
.btn-lg { padding: 14px; font-size: 1.02rem; }
.btn-sm { padding: 7px 12px; font-size: .82rem; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); }
.btn-primary:disabled { background: #9bb6b3; cursor: progress; }

.btn-ghost { background: #fff; color: var(--accent-ink); border-color: var(--line-2); }
.btn-ghost:hover { background: var(--accent-soft); border-color: var(--accent); }

.btn-cluster { display: flex; gap: 8px; }

.icon-btn {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  font-size: 1.05rem; line-height: 1;
  background: #fff;
  border: 1px solid var(--line-2);
  border-radius: 7px;
  color: var(--muted);
  cursor: pointer;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent-ink); }
.icon-btn:disabled { opacity: .35; cursor: default; }
.icon-btn--danger:hover { border-color: var(--danger); color: var(--danger); background: var(--danger-soft); }

/* ----------------------------------------------------------- status ------ */
.status { min-height: 1.2em; font-size: .85rem; margin: 4px 2px 0; color: var(--muted); }
.status.err { color: var(--danger); }
.status.busy { color: var(--accent-ink); }

/* ------------------------------------------------------ print / PDF ------ */
.results-actions { display: flex; justify-content: flex-end; }
.print-only { display: none; }
.print-header h1 { font-size: 1.2rem; margin: 0 0 2px; }
.print-header p { color: var(--muted); font-size: .82rem; margin: 0 0 14px; }

/* ------------------------------------------------------ odometer strip --- */
.odometer {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--ink);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.odo-cell {
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  border-right: 1px solid rgba(255, 255, 255, .07);
}
.odo-cell:last-child { border-right: none; }
.odo-label {
  font-size: .66rem;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: #8fb8b3;
}
.odo-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.7rem;
  font-weight: 600;
  letter-spacing: .01em;
  color: #f0f5f3;
}
.odo-cell--accent .odo-value { color: var(--signal); text-shadow: 0 0 18px rgba(207, 122, 16, .35); }

/* ------------------------------------------------------------ table ------ */
.table-scroll { overflow-x: auto; }
.legs { width: 100%; border-collapse: collapse; font-size: .9rem; }
.legs th, .legs td { padding: 10px 8px; text-align: left; border-bottom: 1px solid var(--line); }
.legs thead th {
  font-size: .7rem; text-transform: uppercase; letter-spacing: .05em;
  color: var(--muted); font-weight: 700; border-bottom: 1.5px solid var(--line-2);
}
.legs .num { text-align: right; font-family: var(--font-mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.legs .center { text-align: center; }
.legs tbody tr:last-child td { border-bottom: none; }
.legs .leg-nonbill td { color: var(--muted); }
.legs .leg-nonbill .leg-name { text-decoration: line-through; text-decoration-color: var(--line-2); }
.leg-name { font-weight: 550; }
.leg-name small { display: block; font-weight: 400; color: var(--muted); font-size: .78rem; }

.bill-toggle {
  width: 20px; height: 20px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* ------------------------------------------------------------- csv ------- */
.export-cols {
  border: none;
  margin: 10px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}
.export-cols label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: .82rem;
  color: var(--text);
  cursor: pointer;
}
.export-cols input[type="checkbox"] {
  width: 15px; height: 15px;
  accent-color: var(--accent);
  cursor: pointer;
}

.check-inline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .82rem;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}
.check-inline input[type="checkbox"] {
  width: 15px; height: 15px;
  accent-color: var(--accent);
  cursor: pointer;
}
.paste .csv-out { margin-top: 10px; }
.csv-out { background: var(--ink); color: #d7e6e2; border-color: var(--ink-2); }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ------------------------------------------------------------- map ------- */
.card--map { padding: 16px; }
.map {
  height: 360px;
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-2);
  background: #eef2f0;
  z-index: 0;
}
.leg-label {
  background: var(--signal);
  color: #2a1802;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, .25);
  white-space: nowrap;
}
.stop-pin {
  background: var(--accent);
  color: #fff;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12px;
  width: 24px; height: 24px;
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  display: grid; place-items: center;
  border: 2px solid #fff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, .3);
}
.stop-pin span { transform: rotate(45deg); }

/* ----------------------------------------------------------- footer ------ */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 20px 40px;
  margin-top: 10px;
}
.site-footer p { color: var(--muted); font-size: .78rem; margin: 0; max-width: 60ch; }

/* --------------------------------------------------------- responsive ---- */
@media (max-width: 380px) {
  .odo-value { font-size: 1.35rem; }
  .odo-cell { padding: 13px 9px; }
  .wrap { padding-inline: 14px; }
}

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

/* ------------------------------------------------------- print report ---- */
@media print {
  body { background: #fff; }
  .wrap { max-width: 100%; padding: 0; }

  .site-header, .site-footer, .col-input, .no-print,
  #export-card, .status { display: none !important; }

  .print-only { display: block; }

  .layout { display: block; padding: 0; }
  .col-results { position: static; gap: 12px; }

  .card {
    box-shadow: none;
    border: 1px solid #bbb;
    break-inside: avoid;
    page-break-inside: avoid;
  }
  .odometer { break-inside: avoid; page-break-inside: avoid; box-shadow: none; }

  .table-scroll { overflow: visible; }

  .card--map { padding: 10px; }
  .map { height: 320px; }
  .leaflet-control-zoom { display: none !important; }
}