/* 日期熱圖: destination rows × departure-week columns, coloured by RC multiple */

.dt-card { padding: 14px 16px; }
.dt-legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 12px; color: var(--ink-2); margin-bottom: 12px; }
.dt-legend span { display: inline-flex; align-items: center; gap: 5px; white-space: nowrap; }
.dt-legend .dt-c { width: 14px; height: 14px; border-radius: 3px; display: inline-block; }

.dt-map { --n: 26; display: grid; gap: 2px; }
.dt-row { display: grid; grid-template-columns: minmax(72px, 128px) repeat(var(--n), minmax(0, 1fr)) 56px; gap: 2px; align-items: stretch; }
.dt-reg { font: 600 12px var(--sans); color: var(--ink-3); padding: 8px 0 2px; letter-spacing: .02em; }
.dt-l { display: flex; align-items: baseline; gap: 5px; min-width: 0; font-size: 13px; padding-right: 6px; }
.dt-l b { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dt-l small { font: 500 10.5px var(--num); color: var(--ink-3); }
.dt-head { position: sticky; top: 0; z-index: 2; background: var(--surface); padding-bottom: 2px; }
.dt-head .dt-l { font-size: 11.5px; color: var(--ink-3); align-items: flex-end; }
.dt-w { display: flex; flex-direction: column; justify-content: flex-end; align-items: center; font: 600 10.5px var(--sans); color: var(--ink-2); white-space: nowrap; min-width: 0; }
.dt-w small { font: 500 10px var(--num); color: var(--ink-3); }
.dt-max { font: 600 12px var(--num); font-variant-numeric: tabular-nums; text-align: right; color: var(--ink); display: flex; flex-direction: column; justify-content: center; }
.dt-max small { font-weight: 500; font-size: 10.5px; color: var(--ink-3); }
.dt-head .dt-max { font: 500 11.5px var(--sans); color: var(--ink-3); justify-content: flex-end; }

/* cells: one hue (the leaderboard's value red), light → dark */
.dt-c { min-height: 26px; border: 0; border-radius: 3px; padding: 0; margin: 0; font: 600 10.5px/1 var(--num); font-variant-numeric: tabular-nums; color: var(--ink); background: var(--surface-2); cursor: default; overflow: hidden; }
button.dt-c { cursor: pointer; }
button.dt-c:hover, button.dt-c:focus-visible { outline: 2px solid var(--ink); outline-offset: 0; position: relative; z-index: 1; }
.dt-c.l0 { background: var(--surface-3); color: var(--ink-3); }
.dt-c.l1 { background: color-mix(in srgb, var(--red) 10%, var(--surface)); }
.dt-c.l2 { background: color-mix(in srgb, var(--red) 24%, var(--surface)); }
.dt-c.l3 { background: color-mix(in srgb, var(--red) 40%, var(--surface)); }
.dt-c.l4 { background: color-mix(in srgb, var(--red) 58%, var(--surface)); }
.dt-c.l5 { background: color-mix(in srgb, var(--red) 76%, var(--surface)); color: var(--dark-ink); }
.dt-c.l6 { background: color-mix(in srgb, var(--red) 94%, var(--surface)); color: var(--dark-ink); }
.dt-c.gap { background: repeating-linear-gradient(45deg, var(--surface-2) 0 3px, transparent 3px 6px); }
.dt-c.nil { background: transparent; box-shadow: inset 0 0 0 1px var(--line); }

.dt-status { margin: 12px 0 0; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; }

/* best week per destination */
.dt-top { display: grid; }
.dt-tr { display: grid; grid-template-columns: minmax(0, 1.5fr) 110px minmax(0, 1.4fr) 110px 64px; gap: 12px; align-items: baseline; padding: 8px 4px; border-top: 1px solid var(--line); font-size: 13.5px; }
.dt-tr.hd { border-top: 0; font-size: 12px; color: var(--ink-3); padding-top: 0; }
.dt-tr .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.dt-tr a { text-decoration: none; }
.dt-m { padding: 1px 6px; border-radius: 5px; font-variant-numeric: tabular-nums; }
.dt-m.l0, .dt-m.l1, .dt-m.l2 { color: var(--ink); }
.dt-m.l3, .dt-m.l4 { color: var(--red); background: var(--red-soft); }
.dt-m.l5, .dt-m.l6 { color: var(--dark-ink); background: var(--red); }

.dt-notes ul { margin: 0; padding-left: 18px; display: grid; gap: 6px; font-size: 13.5px; color: var(--ink-2); }

.dt-tip { position: absolute; z-index: 20; pointer-events: none; background: var(--dark); color: var(--dark-ink); border-radius: 8px; padding: 8px 10px; font-size: 12.5px; line-height: 1.5; max-width: 300px; box-shadow: 0 6px 24px rgba(0, 0, 0, .18); }

@media (max-width: 1040px) {
  .dt-c { font-size: 0; } /* too narrow for numbers: colour + tooltip */
  .dt-c.l0, .dt-c.l1 { font-size: 0; }
}
@media (max-width: 720px) {
  .dt-card { padding: 12px 10px; }
  .dt-row { grid-template-columns: 58px repeat(var(--n), minmax(0, 1fr)) 34px; gap: 1px; }
  .dt-map { gap: 1px; }
  .dt-l { font-size: 12px; }
  .dt-l small { display: none; }
  .dt-w { font-size: 9.5px; }
  .dt-w small { display: none; }
  .dt-w:not(.m) { visibility: hidden; }
  .dt-c { min-height: 20px; border-radius: 2px; }
  .dt-max { font-size: 10.5px; }
  .dt-max small { display: none; }
  .dt-tr { grid-template-columns: 1fr auto; gap: 2px 10px; }
  .dt-tr.hd { display: none; }
  .dt-tr > :nth-child(2) { text-align: right; }
  .dt-tr > :nth-child(3) { grid-column: 1; font-size: 12.5px; }
  .dt-tr > :nth-child(4) { grid-column: 2; font-size: 12.5px; }
  .dt-tr > :nth-child(5) { grid-column: 1 / -1; text-align: left; }
}