:root {
  --bg: #f4f6f5; --card: #ffffff; --line: #d9dfdc; --text: #18211d; --dim: #5f6b66;
  --accent: #1d6f86; --accent-ink: #ffffff;
  --bad: #b3261e; --bad-bg: #fbe9e7; --warn: #8a5a00; --warn-bg: #fdf3dc;
  --info: #2f5f8a; --info-bg: #e8f0f8; --ok: #2e7d4f; --ok-bg: #e6f3eb;
  font-family: "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111615; --card: #1a201f; --line: #2d3634; --text: #e5ebe8; --dim: #9aa6a1;
    --accent: #4fa3bb; --accent-ink: #0c1214;
    --bad: #f2877f; --bad-bg: #3a1c1a; --warn: #e8b85c; --warn-bg: #352a14;
    --info: #8fb8df; --info-bg: #1b2a38; --ok: #7ccf9c; --ok-bg: #173024;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 15px; line-height: 1.55; }
button, input, select, textarea { font: inherit; color: inherit; }
input, select, textarea { width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); margin-top: 4px; }
input:focus, select:focus, textarea:focus, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
button { padding: 8px 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); cursor: pointer; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
button:disabled { opacity: .5; cursor: default; }
label { display: block; font-size: 13px; color: var(--dim); margin-bottom: 10px; }
.dim { color: var(--dim); }
.small { font-size: 13px; }
.err { color: var(--bad); min-height: 1.4em; }
code, .mono { font-family: ui-monospace, Consolas, monospace; font-size: 13px; }

/* 登入 */
.login-body { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: 100%; max-width: 360px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 24px; }
.login-card h1 { margin: 0 0 4px; font-size: 20px; }
.login-card button { width: 100%; margin-top: 6px; }

/* 版面 */
header.top { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between;
  padding: 12px 16px; background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
header.top h1 { margin: 0; font-size: 18px; }
header.top .acts { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
main { max-width: 1280px; margin: 0 auto; padding: 16px; display: grid; gap: 16px; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); overflow-x: auto; scrollbar-width: thin; }   /* 分頁多、手機放不下就左右滑，不擠成直排 */
.tabs button { flex: 0 0 auto; white-space: nowrap; border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: none; padding: 8px 12px; }
.tabs button.on { border-bottom-color: var(--accent); color: var(--accent); font-weight: 600; }

/* 數字 */
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.kpi b { display: block; font-size: 26px; font-variant-numeric: tabular-nums; }
.kpi span { font-size: 13px; color: var(--dim); }
.kpi.bad b { color: var(--bad); } .kpi.warn b { color: var(--warn); }

/* 提醒 */
.alerts { display: grid; gap: 8px; }
.alert { display: grid; grid-template-columns: auto 1fr; gap: 4px 10px; padding: 10px 12px; border-radius: 8px; border-left: 4px solid; cursor: pointer; }
.alert.bad { background: var(--bad-bg); border-color: var(--bad); }
.alert.warn { background: var(--warn-bg); border-color: var(--warn); }
.alert.info { background: var(--info-bg); border-color: var(--info); }
.alert .who { font-weight: 600; }
.alert .fix { grid-column: 2; font-size: 13px; color: var(--dim); }

/* 狀態標籤 */
.pill { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.pill.bad { background: var(--bad-bg); color: var(--bad); }
.pill.warn { background: var(--warn-bg); color: var(--warn); }
.pill.info { background: var(--info-bg); color: var(--info); }
.pill.ok { background: var(--ok-bg); color: var(--ok); }
.pill.off { background: var(--bg); color: var(--dim); border: 1px solid var(--line); }

/* 主機表 */
.frame { background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 9px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; white-space: nowrap; }
th { font-size: 12px; color: var(--dim); font-weight: 600; background: var(--bg); position: sticky; top: 0; }
tbody tr { cursor: pointer; }
tbody tr:hover { background: var(--bg); }
tr.inactive td { color: var(--dim); }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.mismatch { color: var(--bad); font-weight: 600; }
.bar { display: inline-block; width: 56px; height: 6px; border-radius: 3px; background: var(--line); vertical-align: middle; margin-left: 6px; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--accent); }
.bar.hi i { background: var(--warn); } .bar.full i { background: var(--bad); }

/* 條件列 */
.filters { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-end; margin-bottom: 10px; }
.filters label { margin: 0; min-width: 140px; flex: 1 1 140px; }
.filters button { flex: 0 0 auto; }
.filters > select { width: auto; flex: 0 1 12em; min-width: 9em; }
.filters > .small { flex: 1 1 100%; }
.pw-show { font-size: 20px; letter-spacing: 1px; background: var(--bg); border: 1px dashed var(--line); padding: 10px; border-radius: 8px; text-align: center; }

/* 對話框 */
dialog.sheet { width: min(760px, calc(100vw - 32px)); max-height: 92vh; padding: 0; border: 1px solid var(--line);
  border-radius: 12px; background: var(--card); color: var(--text); }
dialog.sheet:not([open]) { display: none; }
dialog.sheet[open] { display: flex; flex-direction: column; }
dialog::backdrop { background: rgba(0, 0, 0, .35); }
.sheet-head { padding: 14px 18px; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; gap: 8px; align-items: center; }
.sheet-head h2 { margin: 0; font-size: 17px; }
.sheet-body { padding: 16px 18px; overflow-y: auto; display: grid; gap: 14px; }
.sheet-body > * { min-width: 0; }   /* grid 子項預設不縮小：很長的指令會把整個卡片撐出對話框 */
.sheet-foot { padding: 12px 18px; border-top: 1px solid var(--line); display: flex; gap: 8px; justify-content: flex-end; flex-wrap: wrap; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; font-size: 14px; }
.facts dt { color: var(--dim); }
.facts dd { margin: 0; }
.cmd { background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 10px; word-break: break-all; }
h3 { margin: 4px 0 0; font-size: 15px; }

@media (max-width: 720px) {
  .grid2 { grid-template-columns: 1fr; }
  header.top h1 { font-size: 16px; }
  /* 主機表在手機上變卡片 */
  table.cards thead { display: none; }
  table.cards tr { display: block; padding: 10px 12px; border-bottom: 1px solid var(--line); }
  table.cards td { display: flex; justify-content: space-between; gap: 12px; border: 0; padding: 3px 0; white-space: normal; }
  table.cards td::before { content: attr(data-label); color: var(--dim); font-size: 13px; }
  table.cards td.name { font-weight: 600; }
  table.cards td.name::before { content: none; }
}
/* 多選欄位（營運管理系統的加購模組） */
fieldset.checks { grid-column: 1 / -1; border: 1px solid var(--line, #d0d7de); border-radius: 6px; padding: 8px 12px; display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 0; }
fieldset.checks legend { padding: 0 4px; font-size: 13px; }
fieldset.checks label { display: inline-flex; align-items: center; gap: 4px; margin: 0; }
[data-only][hidden] { display: none !important; }
/* 通知設定 */
fieldset.nbox { border: 1px solid var(--line); border-radius: 8px; padding: 8px 14px; margin: 0 0 14px; background: var(--card); }
fieldset.nbox legend { padding: 0 6px; font-weight: 600; }
.small.ok { color: var(--ok); }
#digestPreview { white-space: pre-wrap; background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 12px; }
/* 兩步驟驗證 QR */
.qr { background: #fff; display: inline-block; padding: 6px; border-radius: 8px; }
.qr svg { display: block; width: 260px; height: 260px; }
.twofa-ways { display: grid; grid-template-columns: auto 1fr; gap: 12px 24px; align-items: start; margin-bottom: 8px; }
.twofa-ways .key { font-size: 16px; letter-spacing: .5px; user-select: all; }
.btn-link { display: inline-block; padding: 8px 14px; border-radius: 8px; background: var(--accent); color: var(--accent-ink); text-decoration: none; }
@media (max-width: 700px) { .twofa-ways { grid-template-columns: 1fr; } .twofa-ways > div:first-child { display: none; } }   /* 手機上掃不了自己的螢幕，QR 藏起來 */
/* 續約與收入 */
.months { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.month { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; display: flex; flex-direction: column; gap: 2px; }
.month.due { border-color: var(--warn); background: var(--warn-bg); }
.month .dim { overflow-wrap: anywhere; }
th.sortable { cursor: pointer; user-select: none; }
th.sortable:hover { color: var(--accent); }
/* 監控儀表板 */
#tabDash { position: relative; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.seg button { border: 0; border-radius: 0; background: var(--card); padding: 6px 12px; }
.seg button.on { background: var(--accent); color: var(--accent-ink); }
.dash-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(420px, 1fr)); gap: 14px; margin-top: 14px; }
.dash-card { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--ok); border-radius: 10px; padding: 12px 14px; display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.dash-card.lv-bad { border-left-color: var(--bad); } .dash-card.lv-warn { border-left-color: var(--warn); }
.dash-card.lv-info, .dash-card.lv-ok { border-left-color: var(--ok); }
.dash-card header { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; align-items: baseline; }
.dash-stats { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.dash-stats div { display: flex; flex-direction: column; min-width: 0; }
.dash-stats b { font-size: 17px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.dash-stats span { font-size: 12px; color: var(--dim); }
.dash-chart h4 { margin: 0 0 2px; font-size: 12px; font-weight: 600; color: var(--dim); }
.dash-chart svg { display: block; width: 100%; height: auto; }
.dash-chart svg.strip { height: 18px; }
.strip .up { fill: var(--ok); } .strip .down { fill: var(--bad); } .strip .part { fill: var(--warn); }
.line .grid { stroke: var(--line); stroke-width: 1; }
.line .tick { fill: var(--dim); font-size: 11px; }
.line .series { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; vector-effect: non-scaling-stroke; }
.line .dot { fill: var(--accent); stroke: var(--card); stroke-width: 2; }
.line .cross { stroke: var(--dim); stroke-width: 1; stroke-dasharray: 3 3; }
.dash-card .axis { display: flex; justify-content: space-between; margin-top: -4px; }
.dash-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.line .tick { font-size: 12px; }
.dash-card footer { display: flex; flex-direction: column; gap: 4px; }
.dash-alerts { margin: 0; padding-left: 18px; font-size: 13px; }
.dash-alerts .bad { color: var(--bad); } .dash-alerts .warn { color: var(--warn); }
.dash-tip { position: absolute; z-index: 5; pointer-events: none; background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; font-size: 12px; box-shadow: 0 4px 14px rgba(0,0,0,.15); max-width: 220px; }
@media (max-width: 700px) {
  .dash-cards { grid-template-columns: 1fr; }
  .dash-stats { grid-template-columns: repeat(3, 1fr); }
  .dash-2col { grid-template-columns: 1fr; }
}
/* 更新清單 */
details.upd { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; margin-top: 8px; }
details.upd summary { cursor: pointer; }
.cmd-row { display: flex; gap: 8px; align-items: center; margin: 6px 0; }
.cmd-row code.cmd { flex: 1; min-width: 0; overflow-x: auto; white-space: nowrap; background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 6px 8px; font-size: 13px; }
.small.ok { color: var(--ok); }
/* 開站檢查表 */
ol.onb-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
li.onb { border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; background: var(--card); }
li.onb.done { border-color: var(--ok); }
.onb-head { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.onb-mark { display: inline-flex; width: 22px; height: 22px; border-radius: 50%; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; background: var(--bg); border: 1px solid var(--line); }
li.onb.done .onb-mark { background: var(--ok); color: #fff; border-color: var(--ok); }
.onb-check { display: inline-flex; gap: 4px; align-items: center; margin: 0; }
li.onb p { margin: 4px 0; }