:root {
  --bg: #f4f6f9;
  --card: #ffffff;
  --border: #e3e8ef;
  --text: #1f2733;
  --muted: #6b7686;
  --primary: #1a5bd6;
  --primary-dark: #1246a8;
  --accent: #0f9d58;
  --danger: #d64545;
  --warning-bg: #fff8e1;
  --loss: #d64545;
  --gain: #0f9d58;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(16, 24, 40, .08), 0 1px 2px rgba(16, 24, 40, .04);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.55;
}

/* ---------- Topbar ---------- */
.topbar {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 24px;
  background: linear-gradient(135deg, #12376e, #1a5bd6);
  color: #fff;
  position: sticky; top: 0; z-index: 50;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { font-size: 26px; }
.brand-name { font-size: 20px; font-weight: 700; letter-spacing: 1px; }
.brand-sub { font-size: 12px; opacity: .85; margin-top: 2px; }
.fx-status {
  margin-left: auto; display: flex; align-items: center; gap: 8px;
  font-size: 13px; background: rgba(255,255,255,.12);
  padding: 6px 14px; border-radius: 999px; max-width: 40%;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.fx-status .dot { width: 9px; height: 9px; border-radius: 50%; background: #f5a623; flex: none; }
.fx-status.ok .dot { background: #52d68a; }
.fx-status.err .dot { background: #ff6b6b; }
.top-actions { display: flex; gap: 8px; }
.top-actions .btn { background: rgba(255,255,255,.14); color: #fff; border-color: rgba(255,255,255,.25); }
.top-actions .btn:hover { background: rgba(255,255,255,.24); }
.top-actions .btn.primary { background: #ffb020; color: #1f2733; border-color: #ffb020; font-weight: 700; }
.top-actions .btn.primary:hover { background: #ffc24d; }

/* ---------- Tabs ---------- */
.tabs {
  display: flex; gap: 4px; padding: 0 24px;
  background: #fff; border-bottom: 1px solid var(--border);
  overflow-x: auto; position: sticky; top: 62px; z-index: 40;
}
.tab-btn {
  border: none; background: none; padding: 14px 18px; cursor: pointer;
  font-size: 14px; color: var(--muted); border-bottom: 3px solid transparent;
  white-space: nowrap; font-family: inherit;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

/* ---------- Layout ---------- */
main { padding: 24px; max-width: 1240px; margin: 0 auto; }
.tab { display: none; }
.tab.active { display: block; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: start; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; box-shadow: var(--shadow); margin-bottom: 18px;
}
.card-title { margin: 0 0 14px; font-size: 16px; display: flex; align-items: center; gap: 8px; }
.hint { font-size: 12px; color: var(--muted); font-weight: 400; }

/* ---------- Forms ---------- */
.form-row {
  display: flex; align-items: center; gap: 10px; margin-bottom: 10px;
}
.form-row label { flex: 0 0 190px; font-size: 13px; color: var(--muted); text-align: right; }
.form-row input[type="number"], .form-row input[type="text"], .form-row select, .form-row textarea {
  flex: 1; min-width: 0;
  padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; font-family: inherit; background: #fff; color: var(--text);
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,91,214,.12);
}
.form-row .triple { flex: 1; display: flex; gap: 8px; }
.form-row .triple input { flex: 1; min-width: 0; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; font-family: inherit; }
.static-val { flex: 1; text-align: left; font-weight: 600; }
.static-val.strong { font-size: 18px; color: var(--primary); }
.divider {
  margin: 16px 0 12px; padding-top: 12px;
  border-top: 1px dashed var(--border);
  font-size: 12px; font-weight: 700; color: var(--primary); letter-spacing: 1px;
}
.divider:first-of-type { border-top: none; padding-top: 0; margin-top: 6px; }
.actions-row { justify-content: flex-end; }
.muted { color: var(--muted); font-size: 13px; }
.disclaimer { color: var(--muted); font-size: 12px; margin-top: 12px; }

/* ---------- Buttons ---------- */
.btn {
  padding: 8px 16px; border: 1px solid var(--border); border-radius: 8px;
  background: #fff; color: var(--text); cursor: pointer; font-size: 13px; font-family: inherit;
  transition: all .15s;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.danger { color: var(--danger); border-color: #f0c9c9; }
.btn.danger:hover { background: #fdf0f0; border-color: var(--danger); }
.btn.small { padding: 4px 10px; font-size: 12px; }
.linkbtn {
  border: none; background: none; color: var(--primary); cursor: pointer;
  font-size: 12px; padding: 0 4px; white-space: nowrap;
}
.linkbtn:hover { text-decoration: underline; }
.linkbtn.danger { color: var(--danger); }

/* ---------- Results ---------- */
.result-kpis {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 14px;
}
.kpi {
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 12px;
}
.kpi .kpi-label { font-size: 11px; color: var(--muted); }
.kpi .kpi-val { font-size: 18px; font-weight: 700; margin-top: 2px; }
.kpi.gain .kpi-val { color: var(--gain); }
.kpi.loss .kpi-val { color: var(--loss); }
.badge {
  display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600;
}
.badge.gain { background: #e7f6ec; color: var(--gain); }
.badge.loss { background: #fdeaea; color: var(--loss); }
.badge.warn { background: var(--warning-bg); color: #b7791f; }

table.tbl { width: 100%; border-collapse: collapse; margin: 8px 0 12px; }
table.tbl th, table.tbl td {
  border: 1px solid var(--border); padding: 7px 10px; font-size: 13px; text-align: right;
}
table.tbl th { background: var(--bg); text-align: right; font-weight: 600; }
table.tbl th:first-child, table.tbl td:first-child { text-align: left; }
table.tbl tr.total td { font-weight: 700; background: #f0f5ff; }

.bar-wrap { margin: 3px 0; }
.bar-label { font-size: 12px; color: var(--muted); }
.bar-track { background: var(--bg); border-radius: 4px; height: 12px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 4px; }
.bar-fill.gain { background: var(--gain); }
.bar-fill.loss { background: var(--loss); }
.bar-fill.warn { background: #f5a623; }
.warn-box {
  background: var(--warning-bg); border: 1px solid #f3d99a; color: #8a6110;
  border-radius: 8px; padding: 10px 12px; font-size: 13px; margin: 10px 0;
}

/* ---------- Shipping ---------- */
.carrier-row {
  display: grid; grid-template-columns: 1.4fr .9fr .9fr .9fr .9fr .9fr auto;
  gap: 6px; align-items: center; margin-bottom: 6px;
}
.carrier-row input {
  padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 12px; font-family: inherit; min-width: 0;
}
.carrier-row .carrier-name { font-weight: 600; }
.ship-row {
  display: grid; grid-template-columns: 1.5fr .9fr .9fr .9fr auto;
  gap: 8px; padding: 7px 0; border-bottom: 1px dashed var(--border); align-items: center; font-size: 13px;
}
.ship-row.head { font-weight: 600; color: var(--muted); font-size: 12px; border-bottom: 1px solid var(--border); }
.ship-row .cheapest { color: var(--gain); font-weight: 700; }

/* ---------- FX table ---------- */
.fx-toolbar { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.fx-note { font-size: 12px; color: var(--muted); }
.fx-table-wrap { overflow-x: auto; }
.fx-table { width: 100%; border-collapse: collapse; }
.fx-table th, .fx-table td { border-bottom: 1px solid var(--border); padding: 7px 12px; text-align: left; font-size: 13px; }
.fx-table th { color: var(--muted); font-size: 12px; }
.fx-table td input { width: 120px; padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; font-family: inherit; }
.fx-table td .tag { font-size: 11px; color: var(--muted); margin-left: 6px; }
.fx-table tr.override td { background: #f0f5ff; }

/* ---------- Quotation tab ---------- */
.quote-items-head, .quote-item-row {
  display: grid; grid-template-columns: 36px 2.2fr 1.3fr 70px 70px 100px 110px auto;
  gap: 8px; align-items: center; padding: 7px 8px;
}
.quote-items-head { font-weight: 600; color: var(--muted); font-size: 12px; border-bottom: 1px solid var(--border); }
.quote-item-row { border-bottom: 1px dashed var(--border); font-size: 13px; }
.quote-item-row input {
  width: 100%; padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; font-family: inherit; min-width: 0;
}
.quote-totals {
  margin-top: 14px; padding: 12px 16px; background: #f0f5ff; border-radius: 8px;
  display: flex; flex-wrap: wrap; gap: 8px 32px; align-items: baseline; font-size: 13px;
}
.quote-totals .strong { font-size: 20px; font-weight: 700; color: var(--primary); }

/* ---------- Toast ---------- */
#toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(80px);
  background: #1f2733; color: #fff; padding: 10px 20px; border-radius: 8px;
  font-size: 13px; opacity: 0; transition: all .25s; z-index: 100; box-shadow: 0 6px 20px rgba(0,0,0,.25);
  max-width: 80%;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Print area (hidden on screen) ---------- */
.print-area { display: none; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid2 { grid-template-columns: 1fr; }
  .brand-sub { display: none; }
  .fx-status { max-width: none; }
}

/* ============ 打印样式：报价单 ============ */
@media print {
  body > *:not(.print-area) { display: none !important; }
  body { background: #fff; }
  .print-area { display: block !important; }
  @page { size: A4; margin: 14mm; }
  .print-sheet { font-size: 12px; color: #000; }
  .print-sheet .p-head { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 14px; }
  .print-sheet .p-company { font-size: 18px; font-weight: 700; }
  .print-sheet .p-contact { font-size: 11px; color: #333; line-height: 1.6; }
  .print-sheet h2 { font-size: 16px; margin: 4px 0; border-bottom: 2px solid #000; padding-bottom: 4px; }
  .print-sheet .p-title { text-align: center; font-size: 20px; font-weight: 800; letter-spacing: 2px; margin: 6px 0 14px; }
  .print-sheet table { width: 100%; border-collapse: collapse; margin-top: 10px; }
  .print-sheet th, .print-sheet td { border: 1px solid #999; padding: 6px 8px; text-align: left; font-size: 11px; }
  .print-sheet th { background: #eee; }
  .print-sheet .num { text-align: right; }
  .print-sheet .p-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 30px; font-size: 11px; margin: 10px 0; }
  .print-sheet .p-meta b { display: inline-block; min-width: 100px; }
  .print-sheet .p-total { text-align: right; font-size: 13px; margin-top: 10px; font-weight: 700; }
  .print-sheet .p-terms { margin-top: 18px; border-top: 1px solid #999; padding-top: 8px; font-size: 11px; }
  .print-sheet .p-terms p { margin: 4px 0; }
  .print-sheet .p-sign { margin-top: 28px; text-align: right; font-size: 11px; }
}