:root {
  --ink: #3b2a22;
  --brown: #6b4634;
  --rose: #a67c6a;
  --paper: #f7f1ea;
  --card: #fffdf9;
  --line: rgba(90, 58, 42, 0.16);
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: "DM Sans", ui-sans-serif, system-ui, sans-serif;
  background: var(--paper);
  color: var(--ink);
}
.wrap { max-width: 720px; margin: 0 auto; padding: 28px 20px 80px; }
.brand { font-family: "Playfair Display", Georgia, serif; font-size: 1.35rem; }
.kicker { letter-spacing: 0.16em; text-transform: uppercase; font-size: 0.72rem; color: var(--rose); }
h1 { font-family: "Playfair Display", Georgia, serif; font-weight: 600; margin: 8px 0 6px; font-size: 2rem; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 22px;
  margin-top: 18px;
}
.treatment { font-size: 1.15rem; }
.meta { color: #6d5649; font-size: 0.95rem; }
label { display: block; margin: 14px 0 6px; font-size: 0.85rem; }
input, select, button, textarea {
  width: 100%;
  font: inherit;
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 12px 14px;
  background: #fff;
}
.slots { display: grid; grid-template-columns: repeat(auto-fill, minmax(118px, 1fr)); gap: 8px; margin-top: 10px; }
.slot {
  border: 1px solid var(--line);
  background: #fff;
  padding: 10px 8px;
  cursor: pointer;
}
.slot.on { background: var(--brown); color: #fff; border-color: var(--brown); }
button.primary {
  margin-top: 18px;
  background: var(--brown);
  color: #fff;
  border: 0;
  cursor: pointer;
  font-weight: 600;
}
button.primary:disabled { opacity: 0.5; cursor: not-allowed; }
.err { color: #9b2c2c; margin-top: 10px; }
.popup-back {
  position: fixed;
  inset: 0;
  background: rgba(40, 26, 20, 0.46);
  display: grid;
  place-items: center;
  padding: 20px;
  z-index: 40;
}
.popup-back[hidden] { display: none; }
.popup {
  width: min(420px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 28px 24px 22px;
  box-shadow: 0 24px 60px rgba(40, 26, 20, 0.22);
  white-space: pre-line;
}
.popup h2 {
  font-family: "Playfair Display", Georgia, serif;
  font-size: 1.7rem;
  margin: 6px 0 10px;
}
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 10px 6px; border-bottom: 1px solid var(--line); }