:root {
  --bg: #eef2f5; --card: #ffffff; --text: #26323d; --muted: #6b7a88; --line: #dde4ea;
  --ok: #2e8b3d; --bad: #d9534f; --warn: #f0b429; --warn-bg: #fff6d6; --accent: #1f7a99;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14191e; --card: #1d252c; --text: #e3e9ee; --muted: #93a1ad; --line: #2c3740;
    --ok: #5bc06b; --bad: #ef7673; --warn: #f0b429; --warn-bg: #3a3320; --accent: #5fb7d4;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 "Microsoft JhengHei", "PingFang TC", "Noto Sans TC", system-ui, sans-serif; }
a { color: var(--accent); text-decoration: none; }
.top { display: flex; align-items: center; gap: 20px; padding: 10px 16px; background: var(--card);
  border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; flex-wrap: wrap; }
.brand { font-weight: 700; font-size: 17px; color: var(--text); }
nav { display: flex; gap: 16px; }
nav .soon { color: var(--muted); opacity: .6; cursor: not-allowed; }
.health { margin-left: auto; font-size: 12px; color: var(--muted); }
main { max-width: 1100px; margin: 0 auto; padding: 16px; }
h1 { font-size: 22px; margin: 4px 0 12px; }
h2 { font-size: 16px; margin: 0 0 8px; }
.muted { color: var(--muted); }
.tabs { display: flex; gap: 8px; margin: 8px 0 14px; flex-wrap: wrap; }
.tab { padding: 6px 14px; border-radius: 999px; background: var(--card); border: 1px solid var(--line);
  color: var(--text); cursor: pointer; }
.tab.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.bar { height: 8px; border-radius: 4px; background: var(--warn); overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--ok); }
.barline { display: flex; justify-content: space-between; font-size: 13px; color: var(--muted); margin: 4px 0 14px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px;
  display: block; color: var(--text); min-height: 96px; }
.card:hover { border-color: var(--accent); }
.card.bad { background: var(--warn-bg); border-color: var(--warn); }
.card .name { font-weight: 600; margin-bottom: 14px; }
.card .sub { font-size: 12px; color: var(--muted); margin-top: -10px; margin-bottom: 10px; }
.counts { display: flex; gap: 14px; font-size: 13px; flex-wrap: wrap; }
.counts b { font-weight: 600; }
.g { color: var(--ok); } .r { color: var(--bad); }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; margin-bottom: 14px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 500; font-size: 13px; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 6px; }
.dot.ok { background: var(--ok); } .dot.bad { background: var(--bad); }
.cams { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; }
.cam { background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.cam.bad { border-color: var(--bad); }
.cam img { width: 100%; display: block; background: #000; aspect-ratio: 16/9; object-fit: cover; }
.cam .cap { padding: 6px 10px; font-size: 13px; }
.back { display: inline-block; margin-bottom: 10px; }
dl.info { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; margin: 0; }
dl.info dt { color: var(--muted); } dl.info dd { margin: 0; }
.err { color: var(--bad); }

/* ---- 地圖 ---- */
nav a.on { font-weight: 700; border-bottom: 2px solid var(--accent); }
.maphead { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 10px; }
.maphead h1 { margin: 0; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; vertical-align: middle; }
.seg button { border: 0; background: var(--card); color: var(--text); padding: 4px 12px; cursor: pointer; font: inherit; font-size: 13px; }
.seg button + button { border-left: 1px solid var(--line); }
.seg button.on { background: var(--accent); color: #fff; }
.panel h2 .seg { margin-left: 10px; font-weight: 400; }
.legend { font-size: 13px; color: var(--muted); margin-left: auto; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin: 0 4px 0 10px; vertical-align: middle; }
.bigmap { height: calc(100vh - 170px); min-height: 420px; border-radius: 10px; border: 1px solid var(--line); }
.smallmap { height: 280px; border-radius: 8px; }
.leaflet-container { font: inherit; }

/* ---- 監視器分割畫面 ---- */
.small { font-size: 14px; font-weight: 400; }
.toolbar { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; font-size: 14px; }
.toolbar select, .toolbar input[type=search] { font: inherit; padding: 4px 8px; border: 1px solid var(--line);
  border-radius: 8px; background: var(--card); color: var(--text); }
.toolbar input[type=search] { min-width: 180px; }
.mosaic { display: grid; grid-template-columns: repeat(var(--cols, 3), 1fr); gap: 8px; }
@media (max-width: 640px) { .mosaic { grid-template-columns: repeat(min(var(--cols, 3), 2), 1fr); } }
.tile { margin: 0; background: var(--card); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; cursor: zoom-in; }
.tile.bad { border-color: var(--bad); }
.tile img { width: 100%; display: block; background: #000; aspect-ratio: 16/9; object-fit: cover; }
.tile figcaption { padding: 4px 8px; font-size: 12px; line-height: 1.4; }
#lightbox { position: fixed; inset: 0; background: rgba(0,0,0,.88); display: none; align-items: center;
  justify-content: center; z-index: 50; }
#lightbox.on { display: flex; }
#lightbox figure { margin: 0; max-width: 94vw; max-height: 94vh; color: #fff; text-align: center; }
#lightbox img { max-width: 94vw; max-height: 82vh; background: #000; }
#lightbox figcaption { padding: 8px; font-size: 14px; }
#lightbox a { color: #8fd3ee; }
#lightbox button { position: absolute; border: 0; background: rgba(255,255,255,.15); color: #fff; font-size: 26px;
  width: 44px; height: 44px; border-radius: 50%; cursor: pointer; }
#lightbox .lb-x { top: 14px; right: 14px; font-size: 20px; }
#lightbox .lb-p { left: 14px; top: 50%; } #lightbox .lb-n { right: 14px; top: 50%; }

/* ---- 登入與帳號 ---- */
.who { font-size: 13px; }
.linkbtn { border: 0; background: none; color: var(--accent); cursor: pointer; font: inherit; padding: 0 0 0 8px; }
.authbox { max-width: 360px; margin: 48px auto; background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; padding: 24px 24px 20px; }
.authbox h1 { margin-top: 0; }
.authbox label { display: block; margin: 12px 0 0; font-size: 14px; color: var(--muted); }
.authbox input { display: block; width: 100%; margin-top: 4px; padding: 8px 10px; font: inherit; color: var(--text);
  background: var(--bg); border: 1px solid var(--line); border-radius: 8px; }
.btn { margin-top: 16px; width: 100%; padding: 9px; font: inherit; border: 0; border-radius: 8px; cursor: pointer;
  background: var(--accent); color: #fff; }
.btn:disabled { opacity: .6; cursor: wait; }
nav[hidden] { display: none; }

.stn + .stn { margin-top: 6px; }
.seg button { white-space: nowrap; }

/* ---- 手機與平板（響應式） ---- */
@media (max-width: 640px) {
  body { font-size: 16px; }
  main { padding: 12px; }
  h1 { font-size: 20px; }

  /* 頁首：標題＋使用者同一列，選單可橫向滑動，更新時間縮小；手機上不黏在頂端以免佔掉畫面 */
  .top { position: static; padding: 8px 12px; gap: 4px 10px; align-items: baseline; }
  .brand { order: 1; font-size: 16px; flex: 1 1 auto; }
  .who { order: 2; margin-left: 0; font-size: 12px; text-align: right; }
  nav { order: 3; flex: 0 0 100%; gap: 6px; overflow-x: auto; white-space: nowrap; margin: 2px -4px 0; padding: 0 4px 2px; }
  nav a { padding: 6px 10px; border-radius: 8px; background: var(--bg); }
  nav a.on { border-bottom: 0; background: var(--accent); color: #fff; }
  .health { order: 4; flex: 0 0 100%; margin-left: 0; font-size: 11px; }

  /* 觸控：按鈕至少約 40px 高；輸入框 16px 以上，避免 iPhone 點擊時自動放大 */
  .tab { padding: 9px 16px; }
  .seg button { padding: 9px 12px; }
  .toolbar select, .toolbar input[type=search], .authbox input { font-size: 16px; padding: 9px 10px; }
  .toolbar { gap: 10px; }
  .toolbar input[type=search] { flex: 1 1 100%; min-width: 0; }
  .btn { padding: 12px; }
  .authbox { margin: 20px auto; padding: 20px 18px; }

  /* 地圖頁：年度按鈕可橫向滑動、不折行；地圖高度跟著螢幕 */
  .maphead { gap: 8px; }
  .maphead #yearseg { max-width: 100%; overflow-x: auto; }
  .legend { margin-left: 0; flex: 0 0 100%; }
  .bigmap { height: calc(100vh - 230px); height: calc(100dvh - 230px); min-height: 360px; }
  .smallmap { height: 240px; }

  /* 單站頁：量測項由表格改成卡片式，每筆兩行 */
  table.readings thead { display: none; }
  table.readings, table.readings tbody { display: block; }
  table.readings tr { display: grid; grid-template-columns: auto auto 1fr auto; gap: 2px 8px; align-items: baseline;
    padding: 9px 0; border-bottom: 1px solid var(--line); }
  table.readings td { border: 0; padding: 0; text-align: left; }
  table.readings td.c-name { grid-column: 1 / -1; font-weight: 600; }
  table.readings td.c-val { font-size: 17px; }
  table.readings td.c-unit { color: var(--muted); }
  table.readings td.c-time { color: var(--muted); font-size: 12px; justify-self: end; }
  table.readings td.c-age { font-size: 12px; white-space: nowrap; }
  dl.info { grid-template-columns: max-content 1fr; }

  /* 放大檢視：按鈕靠邊縮小，圖片佔滿寬度 */
  #lightbox button { width: 40px; height: 40px; font-size: 22px; }
  #lightbox img { max-height: 70vh; }
}

.notice { background: var(--warn-bg); border-bottom: 1px solid var(--warn); color: var(--text); padding: 8px 16px; font-size: 14px; text-align: center; }
.notice[hidden] { display: none; }
.authbox .back { display: block; text-align: center; margin: 12px 0 0; }

/* ---- 管理介面 ---- */
.notice a { margin-left: 4px; font-weight: 600; }
.msg { padding: 8px 12px; border-radius: 8px; margin: 0 0 12px; }
.msg.err { background: color-mix(in srgb, var(--bad) 14%, var(--card)); border: 1px solid var(--bad); }
.okmsg { background: color-mix(in srgb, var(--ok) 14%, var(--card)); border: 1px solid var(--ok); color: var(--text); }
.secret { background: var(--warn-bg); border: 1px solid var(--warn); border-radius: 8px; padding: 10px 14px; margin: 0 0 12px; line-height: 2; }
.secret code { font-size: 20px; letter-spacing: 1px; background: var(--card); padding: 2px 8px; border-radius: 6px; user-select: all; }
.badge { background: var(--bad); color: #fff; border-radius: 10px; padding: 0 7px; font-size: 12px; }
.tab .badge { margin-left: 2px; }
.tablewrap { overflow-x: auto; background: var(--card); border: 1px solid var(--line); border-radius: 10px; }
table.adm th, table.adm td { padding: 8px 10px; vertical-align: middle; }
table.adm tr.changed td { background: var(--warn-bg); }
.acts { white-space: nowrap; text-align: right; }
.btn-s { font: inherit; font-size: 13px; padding: 5px 10px; border-radius: 7px; border: 1px solid var(--line); background: var(--card);
  color: var(--text); cursor: pointer; text-decoration: none; display: inline-block; }
.btn-s:hover { border-color: var(--accent); }
.btn-s.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-s.danger { color: var(--bad); }
.btn-s:disabled { opacity: .5; cursor: not-allowed; }
.pill { font-size: 12px; padding: 1px 8px; border-radius: 10px; border: 1px solid var(--line); color: var(--muted); }
.pill.warn { border-color: var(--warn); background: var(--warn-bg); color: var(--text); }
.pill.bad { border-color: var(--bad); color: var(--bad); }
.formrow { display: flex; gap: 10px 14px; flex-wrap: wrap; align-items: flex-end; margin: 10px 0; }
.formrow label { display: flex; flex-direction: column; gap: 3px; font-size: 13px; color: var(--muted); }
.formrow input, .formrow select, .actionbar select { font: inherit; padding: 6px 9px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--card); color: var(--text); }
.actionbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin: 10px 0; }
.grow { flex: 1; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin: 6px 0 12px; }
.chip { background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 3px 12px; font-size: 13px; }
.chip a { margin-left: 6px; }
.warnline { color: var(--text); background: var(--warn-bg); border: 1px solid var(--warn); border-radius: 8px; padding: 6px 12px; }
details.panel summary { cursor: pointer; }
td input.r-in { font: inherit; padding: 5px 8px; border: 1px solid var(--line); border-radius: 7px; background: var(--card); color: var(--text); width: 12em; max-width: 100%; }

@media (max-width: 640px) {
  .formrow { align-items: stretch; }
  .formrow label, .formrow input, .formrow select { width: 100%; }
  .acts { white-space: normal; }
  td input.r-in { width: 100%; }
  /* 管理表格：欄位不折行，超出寬度時在容器內左右滑動 */
  table.adm { min-width: 480px; }
  table.adm th { white-space: nowrap; }
  table.adm td:nth-child(n+3) { white-space: nowrap; }
}

/* ---- 導航按鈕 ---- */
.navlinks { display: inline-flex; gap: 8px; flex-wrap: wrap; margin-top: 6px; }
.navlink { display: inline-block; padding: 6px 12px; border-radius: 8px; background: var(--accent); color: #fff !important;
  font-size: 14px; text-decoration: none; }
.navlink.alt { background: #4b5563; }
.navrow { margin: 10px 0 0; }
.leaflet-popup-content .navlink { color: #fff; }
@media (max-width: 640px) { .navlink { padding: 10px 14px; font-size: 15px; } }