:root {
  --brand: #155eef; --brand-hover: #004eeb; --bg: #f9fafb; --surface: #fff; --fill: #f2f4f7;
  --ink: #101828; --ink-2: #344054; --muted: #667085; --line: #eaecf0; --line-strong: #d0d5dd;
  --soft: #eff4ff; --danger: #b42318; --ok: #027a48; --radius: 12px;
  color-scheme: light;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.45 "Inter", system-ui, -apple-system, "Segoe UI", sans-serif; -webkit-font-smoothing: antialiased; }
body.embed { background: transparent; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.muted { color: var(--muted); }

.book { max-width: 980px; margin: 40px auto; padding: 0 16px; }
.embed .book { margin: 0 auto; padding: 0; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 1px 2px rgba(16, 24, 40, .05); display: grid; grid-template-columns: 280px 1fr; min-height: 460px; overflow: hidden; }
.info { padding: 28px 24px; border-right: 1px solid var(--line); }
.info h1 { font-size: 1.4rem; margin: 0 0 12px; line-height: 1.2; }
.info .meta { display: grid; gap: 8px; color: var(--ink-2); font-weight: 500; margin: 0 0 16px; padding: 0; list-style: none; }
.info .meta li { display: flex; gap: 8px; align-items: center; }
.info p { color: var(--muted); white-space: pre-line; margin: 0; }
.pane { padding: 28px 24px; min-width: 0; }
.pane h2 { font-size: 1.05rem; margin: 0 0 16px; }

.picker { display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: 24px; }
.month-bar { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.month-bar strong { flex: 1; }
.icon { width: 36px; height: 36px; border-radius: 8px; border: 1px solid var(--line-strong); background: var(--surface); cursor: pointer; font-size: 18px; line-height: 1; }
.icon:disabled { opacity: .4; cursor: default; }
.days { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; text-align: center; }
.days .wd { font-size: 12px; color: var(--muted); font-weight: 600; padding: 4px 0; }
.day { aspect-ratio: 1; border: 0; border-radius: 999px; background: none; color: var(--line-strong); font-weight: 500; cursor: default; max-width: 44px; margin: 0 auto; width: 100%; }
.day.open { background: var(--soft); color: var(--brand-hover); cursor: pointer; font-weight: 600; }
.day.open:hover { background: #d1e0ff; }
.day.on { background: var(--brand); color: #fff; }
.day.today { box-shadow: inset 0 0 0 1px var(--line-strong); }
.times { display: flex; flex-direction: column; gap: 8px; max-height: 360px; overflow-y: auto; padding-right: 4px; }
.times h3 { font-size: .95rem; margin: 0 0 4px; font-weight: 600; }
.slot { padding: 10px 12px; border: 1px solid var(--brand); color: var(--brand); background: var(--surface); border-radius: 8px; font-weight: 600; cursor: pointer; }
.slot:hover { background: var(--soft); }
.tz { margin-top: 16px; display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 14px; }
.tz select { max-width: 240px; border: 1px solid var(--line-strong); border-radius: 8px; padding: 6px 8px; background: var(--surface); }

form { display: grid; gap: 14px; max-width: 460px; }
label { display: grid; gap: 6px; font-weight: 500; color: var(--ink-2); font-size: 14px; }
input, textarea { border: 1px solid var(--line-strong); border-radius: 8px; padding: 10px 12px; background: var(--surface); width: 100%; }
textarea { min-height: 90px; resize: vertical; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.btn { padding: 10px 18px; border-radius: 8px; border: 1px solid var(--brand); background: var(--brand); color: #fff; font-weight: 600; cursor: pointer; text-decoration: none; display: inline-block; }
.btn:hover { background: var(--brand-hover); }
.btn:disabled { opacity: .6; cursor: default; }
.btn.ghost { background: var(--surface); color: var(--ink-2); border-color: var(--line-strong); }
.btn.danger { background: var(--surface); color: var(--danger); border-color: #fda29b; }
.link { background: none; border: 0; color: var(--brand); cursor: pointer; padding: 0; font-weight: 600; }
.chosen { background: var(--fill); border-radius: 8px; padding: 10px 12px; font-weight: 600; color: var(--ink-2); }
.err { color: var(--danger); font-weight: 500; margin: 0; }
.done { text-align: center; padding: 24px 8px; display: grid; gap: 12px; justify-items: center; }
.done .tick { width: 48px; height: 48px; border-radius: 999px; background: #ecfdf3; color: var(--ok); display: grid; place-items: center; font-size: 24px; font-weight: 700; }
.done h2 { margin: 0; }
.empty { color: var(--muted); }

@media (max-width: 760px) {
  .book { margin: 16px auto; }
  .card { grid-template-columns: 1fr; }
  .info { border-right: 0; border-bottom: 1px solid var(--line); padding: 20px; }
  .pane { padding: 20px; }
  .picker { grid-template-columns: 1fr; }
  .times { max-height: none; }
}