:root {
  --paper: #FAF8F2;
  --paper-2: #F2EFE6;
  --ink: #0F172A;
  --ink-2: #475569;
  --line: #D9D4C7;
  --cyan: #04C9BC;
  --cyan-ink: #046E67;
  --red: #A32D2D;
  --serif: "Playfair Display", Georgia, serif;
  --sans: "DM Sans", system-ui, -apple-system, Segoe UI, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
}
* { box-sizing: border-box; border-radius: 0; }
html, body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.5 var(--sans); }
body.is-embed { background: transparent; }
body.is-embed .bk { padding: 8px 4px 16px; }
button, input, textarea { font: inherit; color: inherit; }
a { color: var(--ink); }

.bk { max-width: 880px; margin: 0 auto; padding: 48px 16px 64px; }
.bk-head { border-bottom: 2px solid var(--ink); padding-bottom: 20px; margin-bottom: 28px; }
.bk-kicker { font: 500 12px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--cyan-ink); margin: 0 0 12px; }
.bk-title { font: 700 clamp(28px, 4.5vw, 40px)/1.1 var(--serif); margin: 0 0 10px; }
.bk-lede { margin: 0; color: var(--ink-2); max-width: 60ch; }

.bk-step { margin-bottom: 32px; }
.bk-label { display: flex; gap: 12px; align-items: baseline; font: 700 13px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; margin: 0 0 14px; }
.bk-label span { color: var(--cyan-ink); }

.bk-types { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
.bk-type { text-align: left; background: #fff; border: 1px solid var(--line); padding: 18px 18px 16px; cursor: pointer; display: grid; gap: 6px; }
.bk-type:hover { border-color: var(--ink); }
.bk-type[aria-checked="true"] { border: 2px solid var(--ink); padding: 17px 17px 15px; box-shadow: inset 4px 0 0 var(--cyan); }
.bk-type-title { font: 700 20px/1.2 var(--serif); }
.bk-type-min { font: 500 12px/1 var(--mono); color: var(--cyan-ink); letter-spacing: .06em; }
.bk-type-desc { font-size: 14px; color: var(--ink-2); }

.bk-cal { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 24px; background: #fff; border: 1px solid var(--line); padding: 20px; }
.bk-month-nav { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.bk-month-name { font: 700 18px/1 var(--serif); margin: 0; }
.bk-icon { background: none; border: 1px solid var(--line); width: 36px; height: 36px; cursor: pointer; }
.bk-icon:hover:not(:disabled) { border-color: var(--ink); }
.bk-icon:disabled { opacity: .3; cursor: default; }
.bk-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; }
.bk-dow { font: 500 11px/1 var(--mono); text-align: center; color: var(--ink-2); padding: 6px 0; text-transform: uppercase; }
.bk-date { aspect-ratio: 1; min-height: 36px; border: 1px solid transparent; background: none; cursor: default; color: #A8A29E; font-variant-numeric: tabular-nums; }
.bk-date.has-slots { color: var(--ink); background: var(--paper-2); cursor: pointer; font-weight: 700; }
.bk-date.has-slots:hover { border-color: var(--ink); }
.bk-date[aria-selected="true"] { background: var(--ink); color: var(--paper); }
.bk-tz { font-size: 13px; color: var(--ink-2); margin: 12px 0 0; }

.bk-slots { border-left: 1px solid var(--line); padding-left: 20px; min-width: 0; }
.bk-day { font: 700 16px/1.3 var(--serif); margin: 0 0 12px; }
.bk-slot-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); gap: 8px; max-height: 340px; overflow-y: auto; }
.bk-slot { border: 1px solid var(--ink); background: #fff; padding: 10px 6px; cursor: pointer; font: 500 14px/1 var(--mono); }
.bk-slot:hover, .bk-slot:focus-visible { background: var(--ink); color: var(--paper); }
.bk-empty { color: var(--ink-2); font-size: 14px; }

.bk-picked { font: 500 14px/1.4 var(--mono); background: var(--paper-2); border-left: 4px solid var(--cyan); padding: 10px 14px; margin: 0 0 16px; }
.bk-form { display: grid; gap: 14px; }
.bk-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.bk-form label { display: grid; gap: 6px; font-size: 14px; font-weight: 500; }
.bk-form em { font-style: normal; color: var(--ink-2); font-weight: 400; }
.bk-form input, .bk-form textarea { background: #fff; border: 1px solid var(--line); padding: 11px 12px; width: 100%; }
.bk-form input:focus, .bk-form textarea:focus { outline: 2px solid var(--cyan); outline-offset: -1px; border-color: var(--ink); }
.bk-form input[aria-invalid="true"] { border-color: var(--red); }
.bk-hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.bk-actions { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.bk-btn { display: inline-block; background: var(--ink); color: var(--paper); border: 0; padding: 14px 22px; font-weight: 700; cursor: pointer; text-decoration: none; }
.bk-btn:hover { background: #1E293B; }
.bk-btn:disabled { opacity: .6; cursor: progress; }
.bk-link { background: none; border: 0; padding: 0; cursor: pointer; text-decoration: underline; color: var(--ink-2); }
.bk-error { color: var(--red); margin: 0; font-weight: 500; }
.bk-fine { font-size: 12px; color: var(--ink-2); margin: 0; }
.bk-done { border: 2px solid var(--ink); background: #fff; padding: 28px; }
.bk-done-when { font: 500 16px/1.4 var(--mono); }
.bk-unavailable { border: 1px solid var(--line); padding: 16px; background: #fff; }

@media (max-width: 680px) {
  .bk { padding-top: 28px; }
  .bk-cal { grid-template-columns: 1fr; padding: 14px; }
  .bk-slots { border-left: 0; border-top: 1px solid var(--line); padding: 16px 0 0; }
  .bk-row { grid-template-columns: 1fr; }
  .bk-actions { flex-direction: column-reverse; align-items: stretch; }
  .bk-btn { text-align: center; }
}