:root {
  --bg: #f5f7fa;
  --card: #ffffff;
  --text: #1f2933;
  --muted: #616e7c;
  --border: #d9e2ec;
  --accent: #2f6fb3;
  --ok: #2e7d4f;
  --warn: #b25e09;
  --danger: #c23030;
  --danger-bg: #fdecec;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161c;
    --card: #1c222b;
    --text: #e4e7eb;
    --muted: #9aa5b1;
    --border: #2f3843;
    --accent: #6ea8e6;
    --ok: #5fc48a;
    --warn: #f0a04b;
    --danger: #f06b6b;
    --danger-bg: #3a1f22;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header, main { max-width: 960px; margin: 0 auto; padding: 0 16px; }
header { padding-top: 16px; }
h1 { font-size: 1.5rem; margin: 0; }
h2 { font-size: 1.1rem; margin: 24px 0 8px; }
h3 { margin: 0; font-size: 1.1rem; }
.muted { color: var(--muted); font-size: 0.875rem; margin: 4px 0; }

.alerts { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.alerts li {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  background: var(--danger-bg); border-left: 4px solid var(--danger);
  padding: 12px; border-radius: 8px;
}
.alerts li.empty { background: var(--card); border-left-color: var(--ok); color: var(--muted); }

.beds { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); padding-bottom: 32px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.card.alerting { border-color: var(--danger); }
.card-head { display: flex; justify-content: space-between; align-items: center; }
.badge { font-size: 0.8rem; padding: 2px 10px; border-radius: 999px; background: var(--ok); color: #fff; }
.badge.danger { background: var(--danger); }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 12px 0 8px; }
.stats dt { color: var(--muted); font-size: 0.8rem; }
.stats dd { margin: 0; font-size: 1.15rem; font-weight: 600; font-variant-numeric: tabular-nums; }

.meter { height: 8px; background: var(--border); border-radius: 4px; overflow: hidden; }
.meter-fill { height: 100%; width: 0; background: var(--accent); transition: width .3s; }
.meter-fill.low { background: var(--warn); }

.actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 12px; }
button {
  font: inherit; min-height: 44px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
}
button:active { transform: scale(.98); }
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
button.link { border: none; background: none; color: var(--accent); width: 100%; margin-top: 4px; }

dialog {
  width: min(560px, calc(100% - 32px)); max-height: 80vh;
  border: 1px solid var(--border); border-radius: 12px;
  background: var(--card); color: var(--text);
}
dialog h3 { margin-top: 16px; font-size: 1rem; }
dialog form button { width: 100%; margin-top: 16px; }
.log { list-style: none; padding: 0; margin: 8px 0; font-size: 0.9rem; font-variant-numeric: tabular-nums; }
.log li { padding: 6px 0; border-bottom: 1px solid var(--border); }

/* ---------- 第二階段：登入、帳號、尿袋、點滴架、日誌、排程 ---------- */
a { color: var(--accent); }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; }
.account { display: flex; align-items: center; gap: 4px 12px; flex-wrap: wrap; font-size: 0.9rem; }
.account .muted { margin: 0; }
button.link.inline { width: auto; margin: 0; min-height: 36px; padding: 0 4px; }

.alerts li.urgent { background: var(--danger); color: #fff; font-weight: 600; }
.stats dd.bad { color: var(--danger); }
.actions.two { grid-template-columns: repeat(2, 1fr); margin-top: 8px; }
button.danger { color: var(--danger); border-color: var(--danger); }

.field { display: grid; gap: 4px; margin: 12px 0; font-size: 0.9rem; color: var(--muted); }
.check { display: flex; align-items: center; gap: 8px; margin: 12px 0; min-height: 44px; }
.check input { width: 20px; height: 20px; }
input, select, textarea {
  font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px; padding: 10px; min-height: 44px; width: 100%;
}
textarea { resize: vertical; }
form button.primary { width: 100%; margin-top: 8px; }

.summary { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 16px; margin: 8px 0; }
.summary dt { color: var(--muted); font-size: 0.8rem; }
.summary dd { margin: 0; font-weight: 600; font-variant-numeric: tabular-nums; }
.log li { display: flex; gap: 12px; }
.log li time { color: var(--muted); flex: none; }
.log li.alert span { color: var(--danger); }
.log li.note span { white-space: pre-wrap; overflow-wrap: anywhere; }

main.narrow { max-width: 480px; padding-top: 24px; padding-bottom: 32px; }
.panel { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.error { color: var(--danger); min-height: 1.5em; margin: 4px 0; }
.users { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.users li {
  display: grid; grid-template-columns: 1fr auto auto; gap: 8px; align-items: center;
  background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px;
  overflow-wrap: anywhere;
}
.users button { padding: 0 12px; }