:root {
  --bg: #f4f7f6;
  --surface: #ffffff;
  --text: #16211f;
  --muted: #5b6b68;
  --border: #dde5e3;
  --accent: #0f766e;
  --accent-strong: #0b5c56;
  --accent-soft: #e0f2ef;
  --error: #b42318;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 4px 16px rgba(16, 24, 40, .06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1413;
    --surface: #161f1e;
    --text: #e6eeec;
    --muted: #93a4a0;
    --border: #273433;
    --accent: #2dd4bf;
    --accent-strong: #5eead4;
    --accent-soft: #133532;
    --error: #f97066;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

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

.container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 16px; }

.site-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { font-weight: 800; font-size: 1.2rem; text-decoration: none; color: var(--text); }
.brand span { color: var(--accent); }
nav a { margin-left: 18px; text-decoration: none; color: var(--muted); font-size: .95rem; }
nav a:hover { color: var(--accent); }

.hero { text-align: center; padding: 36px 0 20px; }
.hero h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); margin: 0 0 8px; }
.hero p { color: var(--muted); max-width: 620px; margin: 0 auto; }

.layout { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 20px; align-items: start; }
@media (max-width: 860px) { .layout { grid-template-columns: 1fr; } }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}
.side { display: grid; gap: 20px; }

fieldset { border: 0; margin: 0 0 18px; padding: 0; }
legend { font-weight: 700; font-size: 1.05rem; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.step {
  display: inline-grid; place-items: center;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent); color: var(--surface); font-size: .85rem;
}

.field { margin-bottom: 12px; position: relative; }
label { display: block; font-size: .9rem; font-weight: 600; margin-bottom: 4px; }
input[type="text"], input[type="number"], select {
  width: 100%;
  padding: 10px 12px;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
select:disabled { opacity: .55; }
input[type="range"] { width: 100%; accent-color: var(--accent); }
.check { display: flex; align-items: center; gap: 8px; font-weight: 500; cursor: pointer; }
.check input { accent-color: var(--accent); width: 18px; height: 18px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid-3 { display: grid; grid-template-columns: .7fr 1fr 1.3fr; gap: 12px; }
@media (max-width: 520px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

.hint { color: var(--muted); font-size: .82rem; }
.error { color: var(--error); font-weight: 600; margin: 10px 0 0; }

.suggestions {
  position: absolute; z-index: 1000; left: 0; right: 0; top: 100%;
  list-style: none; margin: 4px 0 0; padding: 4px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  box-shadow: var(--shadow); max-height: 260px; overflow-y: auto;
}
.suggestions:empty { display: none; }
.suggestions li { padding: 8px 10px; border-radius: 8px; cursor: pointer; font-size: .92rem; }
.suggestions li small { display: block; color: var(--muted); }
.suggestions li.active, .suggestions li:hover { background: var(--accent-soft); }

.vehicle-info {
  background: var(--accent-soft); border-radius: 10px; padding: 10px 12px; margin: 4px 0 10px; font-size: .92rem;
}
.manual summary { cursor: pointer; color: var(--accent); font-size: .9rem; margin-bottom: 8px; }

.btn {
  width: 100%; padding: 14px; font: inherit; font-weight: 700; font-size: 1.05rem;
  background: var(--accent); color: var(--surface); border: 0; border-radius: 12px; cursor: pointer;
}
.btn:hover { background: var(--accent-strong); }
.btn:disabled { opacity: .6; cursor: progress; }
.btn-ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent); margin-top: 14px; font-size: .95rem; padding: 10px; }
.btn-ghost:hover { background: var(--accent-soft); }

.results h2, .prices h2, .content h2 { margin: 0 0 8px; font-size: 1.15rem; }
.route-line { color: var(--muted); margin: 0 0 14px; font-size: .92rem; overflow-wrap: anywhere; }
.big-number { text-align: center; background: var(--accent-soft); border-radius: 12px; padding: 16px; margin-bottom: 14px; }
.big-number .label { display: block; font-size: .85rem; color: var(--muted); }
.big-number .value { display: block; font-size: 2.6rem; font-weight: 800; color: var(--accent); font-variant-numeric: tabular-nums; }
.big-number .sub { font-size: .9rem; color: var(--muted); }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 0; }
.stats div { border: 1px solid var(--border); border-radius: 10px; padding: 8px 10px; }
.stats dt { font-size: .78rem; color: var(--muted); }
.stats dd { margin: 0; font-weight: 700; font-variant-numeric: tabular-nums; }
.map { height: 240px; border-radius: 12px; margin-top: 14px; border: 1px solid var(--border); }
.map:empty { display: none; }

.prices table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.prices td { padding: 6px 0; border-bottom: 1px solid var(--border); }
.prices td:last-child { text-align: right; font-weight: 700; }

.content { margin-top: 20px; }
.content details { border-top: 1px solid var(--border); padding: 10px 0; }
.content summary { cursor: pointer; font-weight: 600; }

.ad-slot {
  display: grid; place-items: center;
  color: var(--muted); font-size: .75rem; letter-spacing: .08em; text-transform: uppercase;
  border: 1px dashed var(--border); border-radius: var(--radius);
  margin: 20px auto;
}
.ad-leaderboard { min-height: 90px; max-width: 728px; }
.ad-rect { min-height: 250px; margin: 0; }

.site-footer { margin-top: 40px; padding: 24px 0; border-top: 1px solid var(--border); color: var(--muted); font-size: .85rem; text-align: center; }
.site-footer p { margin: 4px 0; }

.units { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.units-label { font-size: .9rem; font-weight: 600; margin-right: 4px; }
.units label { margin: 0; font-weight: 500; cursor: pointer; }
.units input { position: absolute; opacity: 0; pointer-events: none; }
.units label span {
  display: inline-block; padding: 6px 12px; border: 1px solid var(--border); border-radius: 999px;
  font-size: .88rem; background: var(--bg);
}
.units label input:checked + span { background: var(--accent); border-color: var(--accent); color: var(--surface); }
.units input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }

.prices .station-name { font-weight: 600; }
.prices .station-name small { display: block; font-weight: 400; color: var(--muted); font-size: .78rem; }
.prices tr.cheapest td:last-child { color: var(--accent); }
.price-hint-ok { color: var(--accent); }

.price-mode { margin-bottom: 12px; }