:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #16181d;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #2563eb;
  --danger: #dc2626;
  --radius: 12px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
.container { max-width: 960px; margin: 0 auto; padding: 24px 16px 60px; }
.narrow { max-width: 560px; }
header.top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; margin-bottom: 18px; border-bottom: 1px solid var(--line);
}
header.top .logo { font-weight: 700; font-size: 20px; color: var(--text); }
header.top .logo span { color: var(--accent); }
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px; margin-bottom: 16px;
}
h1 { font-size: 24px; margin: 0 0 6px; }
h2 { font-size: 17px; margin: 0 0 12px; }
.muted { color: var(--muted); font-size: 14px; }
.flash {
  background: #fef3c7; border: 1px solid #fcd34d; color: #92400e;
  padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; font-size: 14px;
}
.btn {
  display: inline-block; background: var(--accent); color: #fff; border: none;
  padding: 10px 18px; border-radius: 8px; font-size: 15px; cursor: pointer;
  font-weight: 600;
}
.btn:hover { filter: brightness(1.08); }
.btn.secondary { background: #eef2ff; color: var(--accent); }
.btn.danger { background: var(--danger); }
.btn.small { padding: 5px 12px; font-size: 13px; }
input, select, textarea {
  width: 100%; padding: 9px 12px; border: 1px solid var(--line);
  border-radius: 8px; font-size: 15px; font-family: inherit; background: #fff;
}
label { display: block; font-size: 13px; font-weight: 600; margin: 12px 0 4px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > div { flex: 1; min-width: 140px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
.chip {
  display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 10px;
  border-radius: 99px; background: #eef2ff; color: var(--accent);
}
.demo-banner {
  background: #fff7ed; border: 1px solid #fdba74; color: #9a3412;
  padding: 8px 14px; border-radius: 8px; font-size: 13px; margin-bottom: 14px;
}
code.key {
  background: #f3f4f6; padding: 3px 8px; border-radius: 6px; font-size: 13px;
  word-break: break-all;
}

/* --- página de reserva --- */
.book-grid { display: grid; grid-template-columns: 240px 1fr; gap: 20px; }
@media (max-width: 700px) { .book-grid { grid-template-columns: 1fr; } }
.days { display: flex; flex-direction: column; gap: 6px; max-height: 420px; overflow-y: auto; }
.day-btn {
  text-align: left; background: #fff; border: 1px solid var(--line);
  border-radius: 8px; padding: 9px 12px; font-size: 14px; cursor: pointer;
}
.day-btn.active { border-color: var(--accent); background: #eef2ff; font-weight: 600; }
.slots { display: grid; grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); gap: 8px; }
.slot-btn {
  background: #fff; border: 1px solid var(--accent); color: var(--accent);
  border-radius: 8px; padding: 9px 4px; font-size: 14px; font-weight: 600; cursor: pointer;
}
.slot-btn:hover, .slot-btn.active { background: var(--accent); color: #fff; }
.sched-day { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.sched-day input[type="time"] { width: 110px; }
.sched-day input[type="checkbox"] { width: auto; }
.sched-day .dname { width: 90px; font-size: 14px; font-weight: 600; }