/* 高齡友善的版面規則（PRD §8）
   1. 內文 20px 起跳，不是 14px、16px。老花眼看 16px 要把手機拿遠。
   2. 可點擊的東西至少 56px 高，手指按得到。
   3. 狀態不能只靠顏色，免費／待確認都要有文字。
   4. 一頁只有一個主要任務，返回路徑清楚。
   這一版只做淺色高對比，不做深色模式：對比穩定比配合系統偏好重要。 */

:root {
  --bg: #fdfbf6;
  --surface: #ffffff;
  --ink: #1b1b1b;
  --ink-soft: #4a4a4a;
  --line: #a8a090;      /* 對白底 3.2:1，低視力也看得到邊界 */
  --brand: #0b5d3b;
  --brand-ink: #ffffff;
  --accent: #8a3b12;
  --free: #0b5d3b;
  --warn: #8a3b12;
  --focus: #1a4bd6;
  --radius: 14px;
  --gap: 16px;
}

* { box-sizing: border-box; }

html { color-scheme: light; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  font-size: 20px;
  line-height: 1.7;
  padding: 0 16px env(safe-area-inset-bottom);
  -webkit-tap-highlight-color: rgba(11, 93, 59, .15);
}

h1, h2, h3 { line-height: 1.35; text-wrap: balance; }
h1 { font-size: 2rem; margin: 0; }
h2 { font-size: 1.35rem; }

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

:where(a, button, input, select, [tabindex]):focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 6px;
}

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--brand); color: var(--brand-ink);
  padding: 12px 20px; z-index: 10;
}
.skip:focus { left: 0; }

.top { max-width: 760px; margin: 0 auto; padding: 24px 0 8px; }
.tagline { margin: 4px 0 0; color: var(--ink-soft); font-size: 1rem; }

/* --- 分頁：今天／明天／週末 --- */
.tabs {
  max-width: 760px; margin: 0 auto 20px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px;
}
.tab {
  min-height: 60px; font-size: 1.1rem; font-weight: 700;
  background: var(--surface); color: var(--ink);
  border: 2px solid var(--line); border-radius: var(--radius);
  cursor: pointer; touch-action: manipulation;
  transition: background-color .15s ease, border-color .15s ease;
}
.tab:hover { border-color: var(--brand); }
.tab[aria-pressed="true"] {
  background: var(--brand); color: var(--brand-ink); border-color: var(--brand);
}

main { max-width: 760px; margin: 0 auto; }
main:focus { outline: none; }

.panel, .results, .foot {
  max-width: 760px; margin: 0 auto 24px;
}
.panel {
  background: var(--surface); border: 2px solid var(--line);
  border-radius: var(--radius); padding: 20px;
}
.panel h2 { margin-top: 0; }

.field { margin-bottom: 20px; }
.field > label { display: block; font-weight: 700; margin-bottom: 6px; }

select, input[type="text"] {
  width: 100%; min-height: 56px; font-size: 1.05rem;
  padding: 10px 14px; color: var(--ink); background: var(--surface);
  border: 2px solid var(--line); border-radius: 10px;
}

.row { display: flex; gap: 10px; align-items: stretch; }
.row input { flex: 1 1 auto; min-width: 0; }

button.primary {
  min-height: 56px; min-width: 96px; padding: 0 20px;
  font-size: 1.05rem; font-weight: 700; cursor: pointer;
  background: var(--brand); color: var(--brand-ink);
  border: 2px solid var(--brand); border-radius: 10px;
  touch-action: manipulation;
}
button.primary:hover { background: #084229; }

.field.check { display: flex; align-items: center; gap: 12px; min-height: 48px; }
.field.check label { font-weight: 700; margin: 0; cursor: pointer; }
.field.check input {
  width: 44px; height: 44px; accent-color: var(--brand); cursor: pointer;
}

.hint { font-size: 1rem; color: var(--ink-soft); margin: 8px 0 0; }

.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 0; }
.chips li {
  display: flex; align-items: center; gap: 8px;
  background: #eef4f0; border: 2px solid var(--brand);
  border-radius: 999px; padding: 6px 8px 6px 16px; font-weight: 700;
}
.chips button {
  min-width: 44px; min-height: 44px; border-radius: 999px; cursor: pointer;
  border: 0; background: var(--brand); color: var(--brand-ink);
  font-size: 1.1rem; line-height: 1; touch-action: manipulation;
}

.understood {
  margin-top: 16px; padding: 14px 16px; border-radius: 10px;
  background: #f4f1e8; border-left: 6px solid var(--brand); font-size: 1rem;
}
.understood ul { margin: 6px 0 0; padding-left: 1.2em; }

/* --- 結果 --- */
.results h2 { display: flex; flex-wrap: wrap; gap: 10px; align-items: baseline; }
.count { font-size: 1rem; font-weight: 400; color: var(--ink-soft); font-variant-numeric: tabular-nums; }

.card {
  background: var(--surface); border: 2px solid var(--line);
  border-radius: var(--radius); padding: 18px; margin-bottom: 14px;
}
.card h3 { margin: 0 0 6px; font-size: 1.25rem; overflow-wrap: anywhere; }
.card .meta { color: var(--ink-soft); font-size: 1rem; margin: 0 0 10px; overflow-wrap: anywhere; }

.badges { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.badge {
  font-size: 1rem; font-weight: 700; padding: 4px 12px;
  border-radius: 999px; border: 2px solid currentColor;
}
.badge.free { color: var(--free); background: #eef4f0; }
.badge.unknown { color: var(--warn); background: #fbf0e9; }
.badge.paid { color: var(--ink); background: #f1efe9; }
.badge.kind { color: var(--ink-soft); background: #f1efe9; }

.time { font-variant-numeric: tabular-nums; font-weight: 700; }

.slots { margin: 10px 0; padding: 0; list-style: none; font-variant-numeric: tabular-nums; }
.slots li { display: inline-block; margin: 0 10px 6px 0; }

.why {
  margin: 12px 0 0; padding: 12px 14px; background: #f7f5ef;
  border-radius: 10px; font-size: 1.05rem;
}
.why strong { display: block; margin-bottom: 4px; }
.why ul { margin: 0; padding-left: 1.2em; }

.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.actions a {
  min-height: 56px; display: inline-flex; align-items: center; padding: 0 20px;
  border: 2px solid var(--brand); border-radius: 10px; font-weight: 700;
  text-decoration: none; color: var(--brand); background: var(--surface);
  touch-action: manipulation;
}
.actions a:hover { background: #eef4f0; }

.source-line { margin: 12px 0 0; font-size: 1rem; color: var(--ink-soft); overflow-wrap: anywhere; }

.empty {
  background: var(--surface); border: 2px dashed var(--line);
  border-radius: var(--radius); padding: 24px;
}
.empty h3 { margin-top: 0; }
.empty .actions a, .empty .actions button {
  min-height: 56px; display: inline-flex; align-items: center; padding: 0 20px;
  border: 2px solid var(--brand); border-radius: 10px; font-weight: 700;
  background: var(--surface); color: var(--brand); cursor: pointer; font-size: 1rem;
}

.foot { border-top: 2px solid var(--line); padding-top: 16px; font-size: 1rem; color: var(--ink-soft); }
.foot ul { padding-left: 1.2em; }
.foot li { margin-bottom: 4px; overflow-wrap: anywhere; }
.small { font-size: 1rem; }

@media (max-width: 480px) {
  /* 不降字級：降字級換到的行數對老花眼是反效果，改成縮邊距。 */
  body { padding-left: 12px; padding-right: 12px; }
  .tabs { grid-template-columns: repeat(2, 1fr); }
  h1 { font-size: 1.7rem; }
}

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