/* The Arena: public session booking pages */
.bk { min-height: 100vh; display: grid; grid-template-columns: 360px 1fr; }
.bk-side { background: var(--bg-2); border-right: 1px solid var(--line); padding: 36px 32px; display: flex; flex-direction: column; gap: 18px; }
.bk-side .logo { width: 170px; }
.bk-side h1 { font-size: 40px; font-variation-settings: 'wdth' 110; letter-spacing: -0.015em; }
.bk-side .eyebrow { margin-bottom: 0; }
.bk-facts { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; color: var(--text-2); font-size: 15px; }
.bk-facts li { display: flex; gap: 10px; align-items: center; }
.bk-facts li::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--red-hi); flex: none; }
.bk-switch { display: inline-flex; background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 4px; align-self: flex-start; }
.bk-switch a { padding: 8px 16px; border-radius: 999px; text-decoration: none; color: var(--text-2); font-size: 14px; }
.bk-switch a.active { background: var(--bone); color: var(--ink); }
.bk-side .spacer { flex: 1; }
.bk-side .foot { display: flex; gap: 14px; flex-wrap: wrap; font-size: 13px; }
.bk-side .foot a { color: var(--text-2); }
.bk-main { padding: 36px 40px 60px; max-width: 900px; }
.bk-step { animation: fade-in 0.3s ease; }
@keyframes fade-in { from { opacity: 0; transform: translateY(8px); } }
.bk-cal { max-width: 440px; }
.bk-cal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.bk-cal-head h2 { font-size: 26px; }
.bk-cal-head button { width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--line-2); background: none; cursor: pointer; font-size: 16px; }
.bk-cal-head button:disabled { opacity: 0.3; cursor: default; }
.bk-dow { display: grid; grid-template-columns: repeat(7, 1fr); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); text-align: center; margin-bottom: 6px; }
.bk-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.bk-cell { aspect-ratio: 1; border-radius: 50%; border: 0; background: none; color: var(--muted); font: 500 15px var(--font); cursor: default; }
.bk-cell.has { background: var(--red-tint); color: var(--red-hi); font-weight: 600; cursor: pointer; }
.bk-cell.has:hover { background: rgba(224, 70, 63, 0.3); }
.bk-cell.today { text-decoration: underline; text-underline-offset: 4px; }
.bk-cell.sel { background: var(--red) !important; color: #fff !important; }
.bk-cell.empty { visibility: hidden; }
.bk-slots { margin-top: 28px; }
.bk-slots h3 { font-size: 22px; margin-bottom: 12px; }
.bk-slot-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 8px; max-width: 760px; }
.bk-slot { display: grid; gap: 3px; text-align: left; background: var(--surface); border: 1px solid var(--line-2); border-radius: 12px; padding: 12px 14px; cursor: pointer; color: var(--text); transition: border-color 0.15s, background 0.15s; }
.bk-slot b { font: 700 20px/1 var(--display); }
.bk-slot span { font-size: 12.5px; color: var(--muted); }
.bk-slot:hover { border-color: var(--bone); background: rgba(236, 232, 225, 0.05); }
.bk-slot.off { opacity: 0.4; cursor: not-allowed; }
.bk-hint { padding: 12px 0; }
.bk-back { background: none; border: 0; color: var(--text-2); cursor: pointer; padding: 0; margin-bottom: 16px; font-size: 14px; }
.bk-pick { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; background: var(--surface); border-left: 3px solid var(--red); border-radius: 8px; padding: 14px 16px; margin: 14px 0 22px; }
.bk-pick b { font: 800 28px/1 var(--display); }
.bk-pick span { color: var(--text-2); }
.bk-main form { max-width: 520px; }
.bk-done h2 { font-size: clamp(34px, 4vw, 48px); margin-top: 10px; }
.bk-done .lead { color: var(--text-2); margin: 10px 0 22px; max-width: 540px; }
.bk-actions { display: flex; gap: 10px; flex-wrap: wrap; }
@media (max-width: 900px) {
  .bk { grid-template-columns: 1fr; }
  .bk-side { border-right: 0; border-bottom: 1px solid var(--line); padding: 24px 20px; }
  .bk-side h1 { font-size: 32px; }
  .bk-main { padding: 24px 16px 60px; }
  .bk-cal { max-width: none; }
}