:root { --ink: #111827; --muted: #6b7280; --line: #e5e7eb; --bg: #f5f6f8; --card: #fff; --accent: #ff9800; --accent-ink: #111; --bad: #b91c1c; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --ink: #e5e7eb; --muted: #9ca3af; --line: #374151; --bg: #111418; --card: #1b1f24; }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; font: 16px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: var(--ink); background: var(--bg); }
a { color: inherit; }
.bk-top { padding: 14px 20px; }
.bk-brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; text-decoration: none; }
.bk-main { max-width: 980px; margin: 0 auto; padding: 0 16px 32px; }
.bk-foot { text-align: center; color: var(--muted); font-size: 13px; padding: 16px; }
.bk-card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 2px 10px rgba(0,0,0,.04); }
.bk-index { max-width: 560px; margin: 24px auto; padding: 24px; }
.bk-index h1 { margin: 0 0 4px; font-size: 24px; }
.bk-type { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 14px 16px; margin-top: 12px; border: 1px solid var(--line); border-radius: 10px; text-decoration: none; }
.bk-type:hover { border-color: var(--accent); }
.bk-arrow { font-size: 28px; color: var(--muted); }
.bk-muted { color: var(--muted); font-size: 14px; }
.bk-split { display: grid; grid-template-columns: 300px 1fr; margin-top: 16px; min-height: 480px; }
.bk-info { padding: 24px; border-right: 1px solid var(--line); }
.bk-info h1 { margin: 4px 0 10px; font-size: 24px; line-height: 1.2; }
.bk-meta { color: var(--muted); margin: 4px 0; }
.bk-desc { margin-top: 14px; white-space: pre-wrap; }
.bk-current { margin-top: 22px; padding: 12px; border-radius: 10px; background: var(--bg); }
.bk-when { font-weight: 700; margin: 4px 0; }
.bk-tag { display: inline-block; margin-top: 6px; padding: 2px 8px; border-radius: 10px; background: #fde68a; color: #111; font-size: 13px; font-weight: 600; }
.bk-pick { padding: 24px; min-width: 0; }
.bk-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.bk-head h2 { margin: 0; font-size: 20px; }
.bk-tz { font-size: 14px; color: var(--muted); }
.bk-tz select, .bk-form input, .bk-form textarea { font: inherit; color: var(--ink); background: var(--card); border: 1px solid #d1d5db; border-radius: 8px; padding: 9px 10px; }
.bk-week { display: flex; align-items: stretch; gap: 8px; margin: 16px 0 12px; }
.bk-nav { border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 8px; width: 38px; font-size: 22px; cursor: pointer; }
.bk-nav:disabled { opacity: .35; cursor: default; }
.bk-days { display: flex; gap: 8px; overflow-x: auto; flex: 1; padding-bottom: 2px; }
.bk-day { flex: none; border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 10px; padding: 8px 12px; cursor: pointer; font: inherit; font-weight: 600; text-align: center; }
.bk-day small { display: block; font-weight: 400; color: var(--muted); font-size: 12px; }
.bk-day.on { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.bk-zone { color: var(--muted); font-size: 13px; margin-bottom: 8px; width: 100%; }
.bk-slots { display: flex; flex-wrap: wrap; gap: 8px; }
.bk-slot { border: 1px solid var(--accent); color: var(--ink); background: transparent; border-radius: 8px; padding: 10px 0; width: 110px; font: inherit; font-weight: 600; cursor: pointer; }
.bk-slot:hover { background: var(--accent); color: var(--accent-ink); }
.bk-form { display: grid; gap: 12px; max-width: 460px; }
.bk-form label { display: grid; gap: 4px; font-weight: 600; font-size: 14px; }
.bk-form label .bk-muted { font-weight: 400; }
.bk-chosen { font-weight: 700; }
.bk-btn { border: 0; border-radius: 8px; background: var(--accent); color: var(--accent-ink); padding: 12px 16px; font: inherit; font-weight: 700; cursor: pointer; }
.bk-btn:disabled { opacity: .6; }
.bk-ghost { background: transparent; border: 1px solid var(--line); color: var(--ink); }
.bk-danger { background: var(--bad); color: #fff; }
.bk-link { background: none; border: 0; padding: 0; color: #2563eb; cursor: pointer; font: inherit; font-weight: 600; }
.bk-err { color: var(--bad); font-weight: 600; }
.bk-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.bk-done h2 { margin: 0 0 8px; }
.bk-actions-top { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
@media (max-width: 760px) {
  .bk-split { grid-template-columns: 1fr; }
  .bk-info { border-right: 0; border-bottom: 1px solid var(--line); padding: 18px; }
  .bk-pick { padding: 18px; }
  .bk-slot { width: calc(50% - 4px); }
}