:root {
  --ink: #1d2327; --muted: #667078; --line: #d6dadd; --bg: #f4f5f6; --card: #fff;
  --brand: #1F3A4D; --def: #FFFF00; --ten: #F8CBAD; --pro: #DDEBF7; --x: #FF7C80;
  --io: #D9D9D9; --io-ink: #595959; --wl: #7030A0;
  --colw: 58px; --roomw: 76px; --rowh: 64px;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--ink);
  font: 15px/1.4 -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", sans-serif; }
body { padding: env(safe-area-inset-top) env(safe-area-inset-right) 0 env(safe-area-inset-left); overflow-x: hidden; }
[hidden] { display: none !important; }
button { font: inherit; color: inherit; border: 1px solid var(--line); background: #fff; border-radius: 10px; padding: 10px 14px; cursor: pointer; }
button.primary { background: var(--brand); color: #fff; border-color: var(--brand); width: 100%; margin-top: 12px; }
button.link { border: 0; background: none; color: var(--brand); text-decoration: underline; padding: 8px 0; }
.small { font-size: 13px; } .muted { color: var(--muted); }
.view { min-height: 100%; }
.card { max-width: 420px; margin: 48px auto; background: var(--card); border-radius: 16px; padding: 24px 20px; box-shadow: 0 2px 12px rgba(0,0,0,.06); }
.card h1 { font-size: 22px; margin: 8px 0 4px; }
.logo { width: 64px; height: 64px; border-radius: 14px; }
.steps { padding-left: 20px; } .steps li { margin: 8px 0; }
.msg { color: #C00000; font-size: 14px; }
.pair { margin-top: 18px; font-size: 14px; } .pair summary { color: var(--brand); cursor: pointer; }
.row { display: flex; gap: 8px; } .row button { flex: none; } .row input { flex: 1 1 0; min-width: 0; width: 0; font-size: 20px; letter-spacing: 4px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 10px; }

/* 上方列 */
.top { position: sticky; top: 0; z-index: 30; background: var(--bg); padding: 8px 10px 4px; }
.bar { display: flex; align-items: center; gap: 6px; }
.icon { width: 40px; height: 40px; padding: 0; font-size: 22px; line-height: 1; flex: none; }
.pill { padding: 8px 12px; flex: none; }
.date { position: relative; flex: 1; min-width: 0; text-align: center; font-weight: 600; font-size: 17px; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 9px 4px; white-space: nowrap; overflow: hidden; }
.date input { position: absolute; inset: 0; opacity: 0; width: 100%; height: 100%; }
.info { font-size: 13px; color: var(--muted); padding: 6px 2px 2px; }
.info.wl { color: #fff; background: var(--wl); border-radius: 8px; padding: 6px 8px; font-weight: 600; margin-top: 6px; }
.banner { margin-top: 6px; background: #FFF4CE; border: 1px solid #E0C060; color: #5c4400; border-radius: 8px; padding: 6px 8px; font-size: 13px; }

/* 格子：橫的是半小時、直的是廳（和試算表單日格子同配置） */
.grid-wrap { overflow: auto; -webkit-overflow-scrolling: touch; margin: 4px 0 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; max-height: calc(100vh - 150px); }
.grid { display: grid; position: relative; width: max-content; }
.hd { position: sticky; top: 0; z-index: 20; background: #EEF1F3; font-size: 12px; color: var(--muted); padding: 4px 4px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); height: 26px; }
.hd.half { color: #a0a7ad; }
.corner { position: sticky; left: 0; top: 0; z-index: 25; background: #EEF1F3; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.room { position: sticky; left: 0; z-index: 15; background: #F7F8F9; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 6px 6px; font-size: 13px; display: flex; flex-direction: column; justify-content: center; }
.room b { font-size: 14px; } .room span { font-size: 11px; color: var(--muted); }
.room.wl { background: var(--wl); color: #fff; } .room.wl span { color: #E8DCF2; }
.cell { border-right: 1px solid #eceff1; border-bottom: 1px solid #e3e6e8; min-height: var(--rowh); }
.cell.h0 { border-right-color: #e3e6e8; }
.blk { z-index: 5; margin: 1px; padding: 3px 5px; font-size: 11.5px; line-height: 1.3; overflow: hidden; border-radius: 4px; white-space: pre-line; word-break: break-all; cursor: pointer; }
.blk.v { border: 2px solid #000; }
.blk.DEF { background: var(--def); } .blk.TEN { background: var(--ten); } .blk.PRO { background: var(--pro); }
.blk.io { background: var(--io); color: var(--io-ink); border: 1px solid #c4c4c4; }
.blk.x { background: var(--x); border: 2px solid #C00000; }
.blk.wlf { border: 3px solid var(--wl); }
.blk .w { color: var(--wl); font-weight: 700; display: block; }
.blk .st { font-weight: 700; }

.below { padding: 8px 12px 40px; }
.legend { display: flex; flex-wrap: wrap; gap: 10px; font-size: 12px; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: 4px; }
.sw { width: 14px; height: 14px; border-radius: 3px; display: inline-block; border: 1px solid #bbb; }
.sw.def { background: var(--def); } .sw.ten { background: var(--ten); } .sw.pro { background: var(--pro); }
.sw.io { background: var(--io); } .sw.x { background: var(--x); } .sw.wl { background: #fff; border: 3px solid var(--wl); }
.extra h3 { font-size: 14px; margin: 14px 0 6px; }
.list { list-style: none; padding: 0; margin: 0; } .list li { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; margin: 6px 0; font-size: 13px; }
.list li.wl { border-left: 4px solid var(--wl); }

/* 下方彈出 */
.sheet { position: fixed; inset: 0; z-index: 50; background: rgba(0,0,0,.35); display: flex; align-items: flex-end; }
.sheet-box { width: 100%; background: #fff; border-radius: 16px 16px 0 0; padding: 16px 16px calc(16px + env(safe-area-inset-bottom)); max-height: 80vh; overflow: auto; }
.sheet-box > button:not(.primary) { display: block; width: 100%; margin: 8px 0; text-align: left; }
.det { border-bottom: 1px solid var(--line); padding: 8px 0; }
.det:last-child { border-bottom: 0; }
.det .tag { display: inline-block; font-weight: 700; padding: 1px 8px; border-radius: 6px; margin-right: 6px; border: 1px solid #999; }
.det .tag.DEF { background: var(--def); } .det .tag.TEN { background: var(--ten); } .det .tag.PRO { background: var(--pro); }
.kv { margin: 4px 0; } .kv b { display: inline-block; min-width: 4.5em; color: var(--muted); font-weight: 500; }
.code { font-size: 40px; letter-spacing: 8px; text-align: center; font-weight: 700; margin: 12px 0; }
.log h4 { margin: 12px 0 4px; font-size: 14px; } .log div { font-size: 12.5px; padding: 2px 0; border-bottom: 1px dashed #eee; }

/* 窄螢幕：日期不被擠掉 */
@media (max-width: 430px) {
  .bar { gap: 4px; }
  .icon { width: 36px; height: 38px; font-size: 20px; }
  .pill { padding: 8px 8px; font-size: 14px; }
  .date { font-size: 15px; padding: 9px 2px; }
}
/* 手機打橫：上方列壓縮、格子區放大 */
@media (max-height: 500px) and (orientation: landscape) {
  :root { --rowh: 50px; }
  .top { padding: 4px 10px 2px; display: flex; align-items: center; gap: 8px; }
  .bar { flex: 0 0 auto; }
  .date { flex: 0 0 auto; min-width: 150px; padding: 6px 8px; font-size: 15px; }
  .icon { height: 34px; }
  .pill { padding: 6px 10px; }
  .info, .info.wl { flex: 1; min-width: 0; margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; padding: 5px 8px; }
  .banner { position: absolute; left: 10px; right: 10px; top: 46px; z-index: 40; }
  .grid-wrap { max-height: calc(100vh - 52px); }
  .hd { height: 22px; padding: 2px 4px; }
}