/* 旅程導航助手 — 手機直向優先、高對比、大觸控區 */
:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --text: #111827;
  --muted: #4b5563;
  --border: #d1d5db;
  --brand: #0b2545;
  --primary: #0a4fd6;
  --primary-text: #ffffff;
  --done: #0f6b3a;
  --done-bg: #e6f4ea;
  --skip: #7a4b00;
  --skip-bg: #fdf2dc;
  --warn: #9a2b00;
  --warn-bg: #fff1e8;
  --ok: #0f6b3a;
  --danger: #b42318;
  --focus: #f59e0b;
  --radius: 14px;
  --tap: 48px;
  --tabbar-h: 64px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --surface: #161b22;
    --text: #f3f4f6;
    --muted: #b6bfcc;
    --border: #3b4452;
    --brand: #0b2545;
    --primary: #3b82f6;
    --primary-text: #0b1020;
    --done: #6ee7a0;
    --done-bg: #12301f;
    --skip: #fbbf5a;
    --skip-bg: #3a2a0b;
    --warn: #ffb08a;
    --warn-bg: #3a1d10;
    --ok: #6ee7a0;
    --danger: #ff8a80;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.5;
  padding-top: var(--safe-top);
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
  padding-bottom: calc(var(--tabbar-h) + var(--safe-bottom) + 16px);
  -webkit-tap-highlight-color: transparent;
}
main { display: block; max-width: 640px; margin: 0 auto; outline: none; }
.view { padding: 12px 16px 24px; }
h1 { font-size: 1.5rem; margin: 0.2em 0; }
h2 { font-size: 1.2rem; margin: 0.4em 0; }
p { margin: 0.5em 0; }
a { color: var(--primary); }
.loading { padding: 2rem 1rem; color: var(--muted); }
.hint, .sub { color: var(--muted); font-size: 0.95rem; }
.version { color: var(--muted); font-size: 0.85rem; text-align: center; margin-top: 2rem; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: -999px; top: 0; }
.skip-link:focus { left: 8px; top: calc(8px + var(--safe-top)); z-index: 100; background: var(--surface); padding: 8px; }

:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

/* ---------- 按鈕 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: var(--tap); min-width: var(--tap);
  padding: 10px 16px;
  border-radius: 12px;
  border: 2px solid var(--primary);
  background: var(--surface);
  color: var(--primary);
  font: inherit; font-weight: 600;
  text-decoration: none; text-align: center;
  cursor: pointer;
  touch-action: manipulation;
}
.btn:disabled, .btn[disabled] { opacity: 0.45; cursor: not-allowed; }
.btn.primary { background: var(--primary); color: var(--primary-text); }
.btn.ghost { border-color: var(--border); color: var(--text); }
.btn.small { min-height: 44px; padding: 8px 12px; font-size: 0.95rem; }
.btn.big { min-height: 60px; font-size: 1.1rem; width: 100%; }
.btn.danger { border-color: var(--danger); color: var(--danger); }
.btn.done { background: var(--done); border-color: var(--done); color: #fff; flex: 2; }
.btn.skip { border-color: var(--skip); color: var(--skip); flex: 1; }
@media (prefers-color-scheme: dark) { .btn.done { color: #0b1020; } }
.btn.nav {
  width: 100%;
  min-height: 56px;
  background: var(--primary); color: var(--primary-text); border-color: var(--primary);
  font-size: 1.08rem;
}
.btn.nav.big { min-height: 64px; font-size: 1.2rem; border-radius: 16px; }
.btn.nav.disabled { background: var(--warn-bg); color: var(--warn); border: 2px dashed var(--warn); }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
.btn-col { display: flex; flex-direction: column; gap: 12px; margin: 12px 0; }
.status-row { display: flex; gap: 10px; margin-top: 12px; }
.status-row .btn { flex: 1; min-height: 52px; }
.fallback-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }

/* ---------- 頁首 ---------- */
.day-header, .page-header {
  position: sticky; top: var(--safe-top); z-index: 5;
  background: var(--bg);
  margin: -12px -16px 8px; padding: 10px 16px 8px;
  border-bottom: 1px solid var(--border);
}
.page-header { position: static; }
.trip-title { font-weight: 700; color: var(--muted); font-size: 0.95rem; }
.date-row { display: flex; gap: 8px; align-items: center; margin-top: 6px; }
.date-step { flex: 0 0 auto; padding: 8px 10px; font-size: 0.95rem; }
.date-select {
  flex: 1; min-height: var(--tap); font: inherit; font-size: 1.15rem; font-weight: 700;
  border-radius: 12px; border: 2px solid var(--border); background: var(--surface); color: var(--text);
  padding: 0 10px; text-align: center; text-align-last: center;
}
.date-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 6px; }
.date-long { font-size: 0.95rem; color: var(--muted); }
.chip { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 0.85rem; font-weight: 600; border: 1px solid var(--border); background: var(--surface); }
.chip.today { background: var(--primary); color: var(--primary-text); border-color: var(--primary); }
.chip.preview { background: var(--skip-bg); color: var(--skip); border-color: var(--skip); }
.chip.city { color: var(--text); }

/* ---------- 狀態列與提示 ---------- */
.statusbar { position: sticky; top: 0; z-index: 20; }
.banner { padding: 8px 16px; font-size: 0.92rem; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.banner.offline { background: #3b3b3b; color: #fff; }
.banner.update { background: var(--primary); color: var(--primary-text); }
.banner .btn { border-color: currentColor; }

.toast {
  position: fixed; left: 12px; right: 12px; z-index: 50;
  bottom: calc(var(--tabbar-h) + var(--safe-bottom) + 12px);
  max-width: 616px; margin: 0 auto;
  display: none; align-items: center; gap: 8px;
  padding: 10px 12px; border-radius: 14px;
  background: #1f2937; color: #fff; box-shadow: 0 6px 24px rgba(0,0,0,.25);
}
.toast.show { display: flex; }
.toast.error { background: #8a1c12; }
.toast-msg { flex: 1; font-size: 0.98rem; }
.toast-action, .toast-close {
  min-height: 44px; min-width: 44px; padding: 6px 12px; border-radius: 10px;
  font: inherit; font-weight: 700; border: 2px solid #fff; background: transparent; color: #fff;
}
.toast-action { background: #fff; color: #111; }
.toast-close { border-color: transparent; font-weight: 500; }

/* ---------- 進度 ---------- */
.progress { margin: 6px 0 12px; }
.progress-nums { display: flex; justify-content: space-between; font-size: 1rem; }
.skipped-num { color: var(--skip); font-weight: 600; }
.bar { display: flex; height: 12px; border-radius: 999px; background: var(--border); overflow: hidden; margin-top: 6px; }
.bar-done { background: var(--done); }
.bar-skip { background: repeating-linear-gradient(45deg, var(--skip), var(--skip) 4px, var(--skip-bg) 4px, var(--skip-bg) 8px); }

/* ---------- 下一站 ---------- */
.next-card {
  background: var(--surface); border: 2px solid var(--primary); border-radius: 18px;
  padding: 14px 14px 12px; box-shadow: 0 2px 10px rgba(10,79,214,.10);
}
.next-label { font-size: 0.9rem; font-weight: 700; color: var(--primary); letter-spacing: .05em; }
.next-name { font-size: 1.55rem; line-height: 1.25; margin: 4px 0 6px; display: flex; flex-direction: column; }
.next-name .stop-local { font-size: 1.05rem; font-weight: 500; color: var(--muted); }
.meta-row { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 10px; align-items: center; }
.meta { font-size: 0.92rem; padding: 2px 8px; border-radius: 8px; background: var(--bg); }
.meta.time { font-weight: 700; }
.notes { white-space: pre-wrap; background: var(--bg); border-radius: 10px; padding: 8px 10px; font-size: 0.98rem; overflow-wrap: anywhere; }
.tag { font-size: 0.85rem; padding: 2px 8px; border-radius: 8px; font-weight: 600; }
.tag.ok { color: var(--ok); background: var(--done-bg); }
.tag.caution { color: var(--skip); background: var(--skip-bg); }
.tag.warn { color: var(--warn); background: var(--warn-bg); }
.mode-switch { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin-top: 10px; }
.seg {
  min-height: 44px; border-radius: 10px; border: 2px solid var(--border); background: var(--surface);
  color: var(--text); font: inherit; font-size: 0.92rem; padding: 4px 2px;
}
.seg.on { border-color: var(--primary); color: var(--primary); font-weight: 700; background: var(--bg); }
details.more { margin-top: 12px; }
details.more summary { min-height: 44px; display: flex; align-items: center; color: var(--muted); font-weight: 600; cursor: pointer; }
details.more > .btn { margin-top: 8px; }

.all-done, .empty, .onboarding, .reminder, .card, .warn-box {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; margin: 10px 0;
}
.all-done { border: 2px solid var(--done); }
.all-done h2 { color: var(--done); }
.empty { text-align: center; display: flex; flex-direction: column; gap: 10px; }
.onboarding { border-color: var(--primary); }
.onboarding ul { padding-left: 1.2em; margin: 6px 0 10px; }
.onboarding li { margin: 4px 0; }
.reminder { display: flex; align-items: center; justify-content: space-between; gap: 10px; background: var(--skip-bg); border-color: var(--skip); font-size: 0.95rem; }
.warn-box { background: var(--warn-bg); border-color: var(--warn); }
.warn-text { color: var(--warn); font-weight: 600; }
.danger-zone { border-color: var(--danger); }
.big-line { font-size: 1.15rem; font-weight: 700; margin: 2px 0; }

/* ---------- 清單 ---------- */
.section-title { margin-top: 20px; font-size: 1.05rem; color: var(--muted); }
.stop-list, .edit-list, .date-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.stop-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.stop-card.completed, .stop-card.skipped { opacity: 0.72; }
.stop-card.open { opacity: 1; }
.card-head {
  width: 100%; display: flex; align-items: center; gap: 10px; text-align: left;
  min-height: 60px; padding: 10px 12px; background: transparent; border: 0; color: inherit; font: inherit;
}
.num { flex: 0 0 auto; width: 30px; height: 30px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; background: var(--bg); font-weight: 700; font-size: 0.95rem; }
.head-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.head-names { display: flex; flex-direction: column; }
.stop-title { font-weight: 700; overflow-wrap: anywhere; }
.stop-local { font-size: 0.9rem; color: var(--muted); overflow-wrap: anywhere; }
.head-meta { font-size: 0.88rem; color: var(--muted); }
.stop-card.completed .stop-title { text-decoration: line-through; text-decoration-thickness: 1px; }
.badge { flex: 0 0 auto; font-size: 0.85rem; font-weight: 700; padding: 3px 8px; border-radius: 8px; border: 1px solid var(--border); }
.badge.completed { color: var(--done); background: var(--done-bg); border-color: var(--done); }
.badge.skipped { color: var(--skip); background: var(--skip-bg); border-color: var(--skip); }
.badge.pending { color: var(--text); }
.card-body, .card-quick { padding: 0 12px 12px; }
.add-row { margin: 16px 0; display: flex; justify-content: center; }
.add-row .btn { width: 100%; }

.date-item {
  width: 100%; text-align: left; display: flex; flex-direction: column; gap: 4px;
  min-height: 64px; padding: 12px 14px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border); color: inherit; font: inherit;
}
.date-item.is-today { border: 2px solid var(--primary); }
.date-item-top { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: 1.08rem; }
.date-item-sub { font-size: 0.92rem; color: var(--muted); }
.plain-list { padding-left: 1.2em; }
.plain-list li { margin: 4px 0; }

.edit-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 12px; }
.edit-item.completed, .edit-item.skipped { opacity: 0.8; }
.edit-info { display: flex; gap: 10px; align-items: flex-start; }
.edit-names { display: flex; flex-direction: column; min-width: 0; }
.edit-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.empty-line { color: var(--muted); }

/* ---------- 表單 ---------- */
.stop-form fieldset { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); padding: 10px 14px 14px; margin: 0 0 14px; }
.stop-form legend { font-weight: 700; padding: 0 6px; }
.field { display: flex; flex-direction: column; gap: 4px; margin: 10px 0; }
.field-label { font-weight: 600; font-size: 0.95rem; }
.field-hint { font-size: 0.85rem; color: var(--muted); }
.field input, .field select, .field textarea, .stop-form > input {
  font: inherit; font-size: 17px; /* 17px 以上避免 iOS 自動放大 */
  min-height: var(--tap); padding: 10px 12px; border-radius: 10px;
  border: 2px solid var(--border); background: var(--surface); color: var(--text); width: 100%;
}
.field textarea { min-height: 72px; resize: vertical; }
.two-col { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 10px; }
.field { min-width: 0; }
.field input[type=date], .field input[type=time] { min-width: 0; max-width: 100%; -webkit-appearance: none; appearance: none; }
.check { display: flex; align-items: center; gap: 10px; min-height: var(--tap); font-weight: 600; }
.check input { width: 26px; height: 26px; }
.dest-preview { font-size: 0.92rem; padding: 8px 10px; border-radius: 10px; margin-top: 8px; overflow-wrap: anywhere; }
.dest-preview.ok { background: var(--done-bg); }
.dest-preview.warn { background: var(--skip-bg); }
.dest-preview.none { background: var(--warn-bg); }
.form-errors:empty { display: none; }
.form-errors { background: var(--warn-bg); color: var(--warn); border: 2px solid var(--warn); border-radius: 12px; padding: 8px 12px; margin-bottom: 12px; font-weight: 600; }
.form-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0; }
.form-actions .btn.primary { flex: 1 1 100%; min-height: 56px; font-size: 1.1rem; }
.form-actions .btn { flex: 1; }
code.url { display: block; font-size: 0.75rem; color: var(--muted); overflow-wrap: anywhere; margin-top: 8px; }

/* ---------- 底部導覽 ---------- */
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: var(--surface); border-top: 1px solid var(--border);
  padding: 4px calc(4px + var(--safe-right)) calc(4px + var(--safe-bottom)) calc(4px + var(--safe-left));
}
.tab {
  min-height: calc(var(--tabbar-h) - 8px);
  display: flex; align-items: center; justify-content: center; text-align: center;
  font-size: 0.95rem; font-weight: 600; color: var(--muted); text-decoration: none; border-radius: 10px; line-height: 1.2;
}
.tab.active { color: var(--primary); background: var(--bg); box-shadow: inset 0 -3px 0 var(--primary); }

/* 大字體：避免按鈕擠壓 */
@media (max-width: 360px) {
  .mode-switch { grid-template-columns: repeat(2, 1fr); }
  .date-step { padding: 8px 6px; font-size: 0.85rem; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }

/* ---------- 說明頁與貼上 ---------- */
.guide-view ol { padding-left: 1.3em; }
.guide-view li { margin: 4px 0; }
.col-table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 0.92rem; }
.col-table th, .col-table td { border: 1px solid var(--border); padding: 6px 8px; text-align: left; vertical-align: top; }
.col-table th { background: var(--bg); }
.col-table td:first-child { white-space: nowrap; font-weight: 600; }
.prompt-box {
  white-space: pre-wrap; overflow-wrap: anywhere; font-size: 0.8rem; line-height: 1.45;
  background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: 10px; margin-top: 12px;
  max-height: 360px; overflow: auto; -webkit-user-select: text; user-select: text;
}
.paste-box {
  width: 100%; font: inherit; font-size: 16px; font-family: ui-monospace, Menlo, monospace;
  min-height: 220px; padding: 10px; border-radius: 10px; border: 2px solid var(--border);
  background: var(--surface); color: var(--text); margin: 10px 0;
}
.preview-list { max-height: 320px; overflow: auto; font-size: 0.95rem; }

/* ---------- 回到我的旅程 ---------- */
.trip-switch {
  display: inline-flex; align-items: center; gap: 8px; max-width: 100%;
  min-height: 44px; padding: 4px 12px 4px 4px; margin-left: -4px;
  border-radius: 999px; text-decoration: none; color: var(--text);
}
.trip-switch:active { background: var(--border); }
.trip-switch-home {
  flex: 0 0 auto; font-size: 0.85rem; font-weight: 700; color: var(--primary);
  border: 1.5px solid var(--primary); border-radius: 999px; padding: 4px 10px;
}
.trip-switch-title { font-weight: 700; color: var(--muted); font-size: 0.95rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
body.no-tabbar { padding-bottom: calc(var(--safe-bottom) + 24px); }
body.no-tabbar .toast { bottom: calc(var(--safe-bottom) + 12px); }
.tabbar[hidden] { display: none; }

/* ---------- 參考照片 ---------- */
.next-head { display: flex; gap: 12px; align-items: flex-start; }
.next-head .next-name { flex: 1; min-width: 0; }
.next-head .photo.wide { flex: 1 1 100%; }
.next-head:has(.photo.wide) { flex-wrap: wrap; }
.photo { margin: 0 0 10px; }
.photo-btn { display: block; padding: 0; border: 0; background: none; width: 100%; cursor: zoom-in; border-radius: 12px; overflow: hidden; }
.photo img { display: block; width: 100%; height: 100%; object-fit: cover; background: var(--bg); }
.photo.side { flex: 0 0 88px; width: 88px; height: 88px; margin-top: 4px; }
.photo.side .photo-btn { height: 88px; }
.photo.wide .photo-btn { height: auto; aspect-ratio: 4 / 3; max-height: 240px; cursor: zoom-out; }
.card-body .photo.wide .photo-btn, fieldset .photo.wide .photo-btn { cursor: default; }
.photo figcaption { display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center; margin-top: 6px; font-size: 0.78rem; color: var(--muted); }
.photo-credit { flex: 1 1 200px; overflow-wrap: anywhere; }
.photo-credit a { color: var(--muted); }
.photo-warn { flex: 1 1 100%; color: var(--skip); font-weight: 700; font-size: 0.85rem; }