:root {
  --bg: #f6faf9;
  --surface: #ffffff;
  --ink: #1e2b2a;
  --ink-soft: #5b6e6c;
  --border: #dbe9e6;
  --accent: #1f8a75;
  --accent-dark: #166b5a;
  --coral: #e0714f;
  --ok-bg: #eaf6ee; --ok-text: #2f6b33; --ok-border: #bfdbc0;
  --err-bg: #fdeceb; --err-text: #a13b26; --err-border: #f3c3b6;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg); color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.demo-banner { background: #1e2b2a; color: #dff5ef; text-align: center; font-size: 0.82rem; padding: 0.45rem 1rem; }

.bk-header { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.75rem; background: var(--surface); border-bottom: 1px solid var(--border); }
.bk-brand { font-weight: 700; font-size: 1.15rem; color: var(--ink); }
.bk-admin-link { font-size: 0.88rem; color: var(--ink-soft); }

main { max-width: 46rem; margin: 0 auto; padding: 2.5rem 1.75rem 4rem; }
h1 { font-size: 1.8rem; margin-bottom: 0.5rem; }

.bk-steps { display: flex; gap: 0.5rem; margin: 1.25rem 0 2rem; }
.bk-step { flex: 1; text-align: center; padding: 0.5rem; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); color: var(--ink-soft); font-size: 0.85rem; font-weight: 600; }
.bk-step.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.bk-step.done { background: var(--ok-bg); color: var(--ok-text); border-color: var(--ok-border); }

.bk-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }
.bk-card { display: block; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 1.2rem; color: var(--ink); }
.bk-card:hover { border-color: var(--accent); text-decoration: none; box-shadow: 0 4px 12px rgba(0,0,0,0.05); }
.bk-card h3 { margin: 0 0 0.4rem; font-size: 1.05rem; }
.bk-meta { color: var(--ink-soft); font-size: 0.85rem; margin: 0; }

.bk-selected { color: var(--ink-soft); font-size: 0.92rem; margin-bottom: 1.25rem; }

.bk-date-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(70px, 1fr)); gap: 0.6rem; }
.bk-date { display: block; text-align: center; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 0.6rem 0.3rem; color: var(--ink); font-size: 0.85rem; }
.bk-date:hover { border-color: var(--accent); text-decoration: none; }

.bk-time-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); gap: 0.5rem; margin-bottom: 1rem; }
.bk-time-opt { border: 1px solid var(--border); border-radius: 8px; padding: 0.55rem; text-align: center; cursor: pointer; background: var(--surface); font-size: 0.88rem; }
.bk-time-opt input { margin-right: 0.35rem; }
.bk-time-opt:has(input:checked) { border-color: var(--accent); background: #eafaf5; font-weight: 600; }

.bk-form label, .bk-block-form label { display: block; font-weight: 600; font-size: 0.88rem; margin: 1rem 0 0.3rem; }
.bk-form input[type=text], .bk-form input[type=email], .bk-form input[type=tel] {
  width: 100%; padding: 0.6rem 0.8rem; border: 1px solid var(--border); border-radius: 6px; font-size: 0.95rem; font-family: inherit;
}

.bk-btn { display: inline-block; background: var(--accent); color: #fff; font-weight: 700; padding: 0.7rem 1.4rem; border-radius: 999px; border: none; cursor: pointer; font-size: 0.95rem; margin-top: 1.25rem; }
.bk-btn:hover { background: var(--accent-dark); }

.bk-notice { border-radius: 8px; padding: 0.85rem 1.1rem; margin: 1rem 0; font-size: 0.92rem; }
.bk-err { background: var(--err-bg); border: 1px solid var(--err-border); color: var(--err-text); }

.bk-confirm { text-align: center; background: var(--surface); border: 1px solid var(--ok-border); border-radius: 12px; padding: 2.5rem 1.5rem; }
.bk-confirm h1 { margin-top: 0; }

.bk-login-main { display: flex; align-items: center; justify-content: center; min-height: 55vh; }
.bk-login-form { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 2rem; width: 100%; max-width: 22rem; }
.bk-login-form label { display: block; font-weight: 600; margin: 1rem 0 0.3rem; font-size: 0.88rem; }
.bk-login-form input { width: 100%; padding: 0.6rem 0.8rem; border: 1px solid var(--border); border-radius: 6px; font-size: 0.95rem; }

.bk-table { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; font-size: 0.88rem; }
.bk-table th, .bk-table td { padding: 0.55rem 0.7rem; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
.bk-table th { background: #eef7f4; }
.bk-empty { color: var(--ink-soft); }

.bk-btn-small { border: none; border-radius: 6px; padding: 0.4rem 0.7rem; font-size: 0.82rem; cursor: pointer; background: var(--accent); color: #fff; }
.bk-btn-small:hover { background: var(--accent-dark); }
.bk-btn-danger { background: var(--coral); }
.bk-btn-danger:hover { background: #c25738; }

.bk-block-form { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; margin-top: 0.75rem; }
.bk-block-form input, .bk-block-form select { padding: 0.5rem 0.6rem; border: 1px solid var(--border); border-radius: 6px; font-size: 0.85rem; }

.bk-back { margin-top: 2.5rem; font-size: 0.9rem; }