/* Transport Trip Profit Calculator — navy + gold, mobile-first */
:root {
  --navy: #0a2166;
  --navy-dark: #071740;
  --gold: #f5c518;
  --gold-dark: #c99a06;
  --ink: #1c2333;
  --muted: #5b6577;
  --line: #d9dee9;
  --bg: #f4f6fb;
  --card: #ffffff;
  --good: #0c6b34;
  --bad: #b3261e;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.45;
}

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }

/* ---------- header / footer ---------- */
.app-header {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
  color: #fff;
  border-bottom: 4px solid var(--gold);
  padding: 22px 0 18px;
}
.app-header h1 { margin: 0 0 4px; font-size: 1.55rem; line-height: 1.2; }
.tagline { margin: 0; color: #d7def2; font-size: 0.95rem; }

.app-footer { padding: 18px 0 26px; color: var(--muted); font-size: 0.85rem; text-align: center; }

/* ---------- layout ---------- */
.layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding-top: 18px;
  padding-bottom: 8px;
}
@media (min-width: 880px) {
  .layout { grid-template-columns: 1.25fr 1fr; align-items: start; }
  .results { position: sticky; top: 16px; }
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 1px 3px rgba(10, 33, 102, 0.06);
}
.card h2 { margin: 0 0 12px; font-size: 1.15rem; color: var(--navy); }
.card h3 {
  margin: 18px 0 8px; font-size: 0.82rem; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--muted);
}
.card h3:first-of-type { margin-top: 4px; }

/* ---------- form ---------- */
.grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
@media (min-width: 560px) { .grid { grid-template-columns: 1fr 1fr; } }

.field { display: flex; flex-direction: column; gap: 4px; font-size: 0.88rem; }
.field > span { font-weight: 600; color: var(--ink); }
.field .opt { font-weight: 400; color: var(--muted); font-style: normal; }
.field input, .field select {
  padding: 10px 12px; font-size: 1rem; color: var(--ink);
  border: 1px solid var(--line); border-radius: 8px; background: #fff; width: 100%;
}
.field input:focus, .field select:focus {
  outline: 2px solid var(--gold); outline-offset: 1px; border-color: var(--gold-dark);
}
.field.derived output {
  padding: 10px 12px; font-size: 1rem; background: #eef1f8;
  border: 1px dashed var(--line); border-radius: 8px; min-height: 1.45em;
}
.hidden { display: none !important; }

.fuel-mode {
  margin: 12px 0 10px; border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px;
  display: flex; flex-wrap: wrap; gap: 8px 22px;
}
.fuel-mode legend { font-size: 0.82rem; font-weight: 600; color: var(--muted); padding: 0 4px; }
.radio { display: inline-flex; align-items: center; gap: 7px; font-size: 0.92rem; cursor: pointer; }
.radio input { accent-color: var(--navy); width: 17px; height: 17px; }

.error {
  margin: 14px 0 0; padding: 10px 12px; border-radius: 8px;
  background: #fdecea; color: var(--bad); border: 1px solid #f3c1bd; font-size: 0.9rem;
}

.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.btn {
  border: 0; border-radius: 9px; padding: 11px 18px; font-size: 0.95rem;
  font-weight: 700; cursor: pointer;
}
.btn-gold { background: var(--gold); color: #231a00; }
.btn-gold:hover { background: var(--gold-dark); color: #fff; }
.btn-navy { background: var(--navy); color: #fff; }
.btn-navy:hover { background: var(--navy-dark); }
.btn-ghost { background: transparent; color: var(--navy); border: 1px solid var(--navy); }
.hint { margin: 12px 0 0; font-size: 0.82rem; color: var(--muted); }

/* ---------- results ---------- */
.results-table { width: 100%; border-collapse: collapse; font-size: 0.97rem; }
.results-table th, .results-table td {
  padding: 8px 6px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top;
}
.results-table td { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.results-table tr.strong th, .results-table tr.strong td {
  font-size: 1.06rem; color: var(--navy); border-bottom: 2px solid var(--gold);
}
.results-table td.neg { color: var(--bad); font-weight: 700; }
.results-table td.pos { color: var(--good); font-weight: 700; }

.verdict { margin: 14px 0 0; font-size: 0.92rem; font-weight: 600; }
.verdict.good { color: var(--good); }
.verdict.bad { color: var(--bad); }

/* ---------- print quotation ---------- */
#quotation { display: none; }

@media print {
  body { background: #fff; }
  .app-header, .app-footer, .layout { display: none !important; }
  #quotation {
    display: block; color: #000; font-size: 12pt; max-width: 700px; margin: 0 auto;
  }
  .q-head { border-bottom: 3px solid #0a2166; padding-bottom: 8px; margin-bottom: 14px; }
  .q-head h1 { margin: 0; font-size: 20pt; color: #0a2166; }
  .q-sub { margin: 2px 0 0; color: #444; font-size: 11pt; }
  .q-meta, .q-table { width: 100%; border-collapse: collapse; margin-bottom: 14px; }
  .q-meta th, .q-meta td, .q-table th, .q-table td {
    border: 1px solid #bbb; padding: 6px 9px; text-align: left;
  }
  .q-meta th { background: #eef1f8; width: 90px; }
  .q-table td:last-child, .q-table th:last-child { text-align: right; }
  .q-table thead th { background: #0a2166; color: #fff; }
  .q-strong td { font-weight: 700; background: #f7f3df; }
  .q-note { font-size: 10pt; color: #444; }
  .q-sign { display: flex; gap: 60px; margin-top: 42px; }
  .q-sign > div { flex: 1; }
  .q-line { display: block; border-bottom: 1px solid #000; height: 28px; }
  .q-sign p { margin: 4px 0 0; font-size: 10pt; color: #444; }
}