:root {
  --ink: #171c26;
  --ink-2: #232a37;
  --ink-3: #39414f;
  --paper: #f5f2eb;
  --card: #fffdf9;
  --line: #e4ddcf;
  --muted: #7b7468;
  --text: #24221e;
  --gold: #b0905a;
  --gold-2: #d6bd8c;
  --gold-soft: #f3ead8;
  --teal: #2d5f5d;
  --teal-soft: #e3eeec;
  --rose: #a5483a;
  --rose-soft: #f6e4df;
  --amber: #a8742a;
  --amber-soft: #f7ecd9;
  /* System fonts only: external font CDNs are blocked in China / inside WeChat. */
  --serif: "Hiragino Mincho ProN", "Yu Mincho", "Songti SC", "Noto Serif CJK JP", serif;
  --sans: "Hiragino Sans", "Yu Gothic UI", "Meiryo", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK JP", sans-serif;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(23, 28, 38, .05), 0 8px 24px -12px rgba(23, 28, 38, .18);
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { font-family: var(--sans); color: var(--text); background: var(--paper); font-size: 14.5px; line-height: 1.7;
  -webkit-font-smoothing: antialiased; font-feature-settings: "palt"; }
a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: .04em; color: var(--ink); margin: 0 0 .6em; }
h1 { font-size: 1.55rem; }
h2 { font-size: 1.15rem; }
h3 { font-size: 1rem; }
.num, td.num, th.num { font-variant-numeric: tabular-nums; text-align: right; white-space: nowrap; }
.muted { color: var(--muted); }
.small { font-size: .85em; }
.nowrap { white-space: nowrap; }

/* ---------- staff layout ---------- */
.shell { display: grid; grid-template-columns: 236px 1fr; min-height: 100vh; }
.side { background: linear-gradient(180deg, var(--ink) 0%, #11151d 100%); color: #cfc8ba; padding: 22px 0 18px;
  position: sticky; top: 0; height: 100vh; overflow-y: auto; display: flex; flex-direction: column; }
.brand { padding: 0 22px 18px; border-bottom: 1px solid rgba(214, 189, 140, .18); margin-bottom: 10px; }
.brand b { display: block; font-family: var(--serif); color: var(--gold-2); font-size: 1.12rem; letter-spacing: .14em; }
.brand span { font-size: .72rem; letter-spacing: .2em; color: #8d8679; }
.side nav a { display: flex; align-items: center; gap: 10px; padding: 8px 22px; color: #cfc8ba; font-size: .9rem;
  border-left: 2px solid transparent; }
.side nav a:hover { background: rgba(255, 255, 255, .04); text-decoration: none; color: #fff; }
.side nav a.on { color: #fff; border-left-color: var(--gold); background: rgba(176, 144, 90, .12); }
.side .group { padding: 16px 22px 6px; font-size: .7rem; letter-spacing: .24em; color: var(--gold); }
.side .foot { margin-top: auto; padding: 14px 22px 0; border-top: 1px solid rgba(214, 189, 140, .14); font-size: .82rem; }
.side .foot button { background: none; border: 0; color: #a59d8f; padding: 0; cursor: pointer; font: inherit; }
.main { padding: 26px 34px 60px; min-width: 0; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 22px; flex-wrap: wrap; }
.topbar .clinic-name { font-family: var(--serif); font-size: 1.05rem; color: var(--ink); letter-spacing: .06em; }
.switcher select { padding: 6px 10px; }

/* ---------- surfaces ---------- */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 20px 22px; margin-bottom: 20px; }
.card > h2:first-child, .card > h3:first-child { margin-top: 0; }
.card-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.card-head h2 { margin: 0; }
.grid { display: grid; gap: 20px; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; position: relative; overflow: hidden; }
.kpi::after { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--gold); }
.kpi .label { font-size: .78rem; color: var(--muted); letter-spacing: .08em; }
.kpi .value { font-family: var(--serif); font-size: 1.6rem; color: var(--ink); font-variant-numeric: tabular-nums; }
.kpi.dark { background: var(--ink); border-color: var(--ink); color: #e8e1d3; }
.kpi.dark .label { color: var(--gold-2); }
.kpi.dark .value { color: #fff; }

/* ---------- tables ---------- */
table { width: 100%; border-collapse: collapse; }
th, td { padding: 9px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { font-weight: 500; font-size: .78rem; letter-spacing: .06em; color: var(--muted); background: #faf7f1; }
tr:last-child td { border-bottom: 0; }
tfoot td { font-weight: 700; border-top: 2px solid var(--ink-3); background: #faf7f1; }
.table-wrap { overflow-x: auto; }
tr.void td { color: #aaa; text-decoration: line-through; }

/* ---------- forms ---------- */
label { display: block; font-size: .82rem; color: var(--ink-3); margin-bottom: 4px; font-weight: 500; }
input[type=text], input[type=password], input[type=number], input[type=date], input[type=time], input[type=month],
input[type=email], input[type=tel], select, textarea {
  width: 100%; padding: 8px 11px; border: 1px solid #d6cebd; border-radius: 7px; font: inherit; background: #fff; color: var(--text); }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--gold-2); outline-offset: 0; border-color: var(--gold); }
textarea { min-height: 96px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px 18px; }
.form-grid .wide { grid-column: 1 / -1; }
.field { margin-bottom: 14px; }
.check { display: inline-flex; align-items: center; gap: 6px; font-size: .9rem; color: var(--text); margin-right: 14px; font-weight: 400; }
.check input { width: auto; }
.inline { display: flex; gap: 8px; align-items: end; flex-wrap: wrap; }
.inline > * { flex: 0 0 auto; }
.inline input, .inline select { width: auto; }
.hint { font-size: .8rem; color: var(--muted); margin-top: 4px; }

/* ---------- buttons & badges ---------- */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 7px; border: 1px solid var(--ink);
  background: var(--ink); color: #fff; font: inherit; font-size: .88rem; cursor: pointer; letter-spacing: .04em; white-space: nowrap; }
.btn:hover { background: var(--ink-3); text-decoration: none; }
.btn.gold { background: var(--gold); border-color: var(--gold); }
.btn.gold:hover { background: #9b7d4a; }
.btn.ghost { background: transparent; color: var(--ink); border-color: #cfc6b4; }
.btn.ghost:hover { background: var(--gold-soft); }
.btn.danger { background: transparent; color: var(--rose); border-color: #dcb3aa; }
.btn.sm { padding: 4px 10px; font-size: .8rem; }
.btns { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
form.inline-form { display: inline; }
.badge { display: inline-block; padding: 1px 9px; border-radius: 99px; font-size: .75rem; background: #eee8dc; color: var(--ink-3); white-space: nowrap; }
.badge.booked { background: var(--teal-soft); color: var(--teal); }
.badge.arrived { background: var(--amber-soft); color: var(--amber); }
.badge.paid, .badge.signed, .badge.confirmed, .badge.ok { background: #e4efe2; color: #3f6b39; }
.badge.cancelled, .badge.noshow, .badge.void { background: var(--rose-soft); color: var(--rose); }
.badge.pending, .badge.draft, .badge.issued { background: var(--gold-soft); color: #8a6a35; }
.flash { padding: 11px 16px; border-radius: 8px; margin-bottom: 16px; border: 1px solid; }
.flash.ok { background: #eef5ec; border-color: #c6dcc1; color: #35582f; }
.flash.error { background: var(--rose-soft); border-color: #e3bdb4; color: #7c3328; }
.notice { padding: 12px 16px; border-left: 3px solid var(--gold); background: var(--gold-soft); border-radius: 0 8px 8px 0; margin-bottom: 16px; font-size: .9rem; }
.notice.warn { border-left-color: var(--rose); background: var(--rose-soft); }

/* ---------- reservations ---------- */
.week { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; margin-bottom: 18px; }
.week a { display: block; text-align: center; padding: 8px 4px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); color: var(--text); }
.week a.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.week a .n { display: block; font-size: .75rem; color: var(--gold); }
.timeline td.time { width: 70px; font-family: var(--serif); color: var(--ink); font-size: 1rem; }
.net { font-family: var(--serif); font-size: 2rem; color: var(--ink); font-variant-numeric: tabular-nums; }
.net.neg { color: var(--rose); }

/* ---------- documents (print) ---------- */
.doc { background: #fff; max-width: 820px; margin: 0 auto 20px; padding: 48px 56px; border: 1px solid var(--line); box-shadow: var(--shadow); }
.doc h1 { text-align: center; letter-spacing: .5em; font-size: 1.6rem; border-bottom: 1px double var(--ink); padding-bottom: 12px; }
.doc .meta { display: flex; justify-content: space-between; gap: 24px; margin: 20px 0; }
.doc .amount { font-family: var(--serif); font-size: 1.8rem; border-bottom: 1px solid var(--ink); display: inline-block; padding: 0 24px 4px 0; }
.doc .body { white-space: pre-wrap; line-height: 1.95; font-size: .95rem; }
.signature { border: 1px solid var(--line); border-radius: 8px; max-width: 360px; background: #fff; }
@media print {
  .side, .topbar, .no-print, .flash { display: none !important; }
  .shell { display: block; }
  .main { padding: 0; }
  body { background: #fff; }
  .doc, .card { box-shadow: none; border: 0; padding: 0; }
}

/* ---------- login ---------- */
.login-page { min-height: 100vh; display: grid; place-items: center;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(176, 144, 90, .25), transparent 60%), var(--ink); }
.login-card { width: min(400px, 92vw); background: var(--card); border-radius: 14px; padding: 38px 34px; box-shadow: 0 30px 60px -20px rgba(0, 0, 0, .5); }
.login-card .brand-l { text-align: center; margin-bottom: 26px; }
.login-card .brand-l b { font-family: var(--serif); font-size: 1.4rem; letter-spacing: .16em; color: var(--ink); display: block; }
.login-card .brand-l span { font-size: .72rem; letter-spacing: .3em; color: var(--gold); }

@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .side { position: static; height: auto; }
  .side nav { display: flex; flex-wrap: wrap; }
  .side nav a { padding: 6px 12px; }
  .main { padding: 18px 16px 40px; }
  .g2, .g3, .g4 { grid-template-columns: 1fr 1fr; }
  .doc { padding: 28px 22px; }
}