:root {
  --maroon: #58080d;
  --maroon-dark: #3d0509;
  --gold: #c9a24b;
  --ink: #1d1d1f;
  --muted: #6b7280;
  --line: #e5e7eb;
  --bg: #f4f4f5;
  --ok: #15803d;
  --err: #b91c1c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  padding: 24px 16px;
}

.card {
  max-width: 520px;
  margin: 0 auto;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, .08);
  overflow: hidden;
}

.head {
  background: linear-gradient(135deg, var(--maroon), var(--maroon-dark));
  color: #fff;
  padding: 28px 28px 22px;
}
.head h1 { margin: 0; font-size: 1.4rem; letter-spacing: .2px; }
.head .sub { margin: 4px 0 0; color: var(--gold); font-weight: 600; }

.step { padding: 24px 28px 28px; }
.step.hidden { display: none; }

h2 { font-size: 1.05rem; margin: 0 0 16px; display: flex; align-items: center; gap: 10px; }
h2 .n {
  background: var(--maroon); color: #fff; width: 26px; height: 26px;
  border-radius: 50%; display: inline-flex; align-items: center;
  justify-content: center; font-size: .85rem;
}

label { display: block; font-size: .85rem; color: var(--muted); margin-bottom: 14px; font-weight: 600; }
input, textarea {
  width: 100%; margin-top: 6px; padding: 11px 12px; font-size: 1rem;
  border: 1px solid var(--line); border-radius: 10px; color: var(--ink);
  font-family: inherit;
}
input:focus, textarea:focus { outline: 2px solid var(--gold); border-color: var(--gold); }

button.primary {
  width: 100%; background: var(--maroon); color: #fff; border: 0;
  padding: 13px; font-size: 1rem; font-weight: 700; border-radius: 10px;
  cursor: pointer; margin-top: 4px;
}
button.primary:hover { background: var(--maroon-dark); }
button.primary:disabled { opacity: .55; cursor: default; }

button.link {
  background: none; border: 0; color: var(--muted); cursor: pointer;
  margin-top: 14px; font-size: .9rem; padding: 0;
}
button.link:hover { color: var(--maroon); }

.assigned, .chosen {
  background: #faf6ec; border: 1px solid var(--gold); color: var(--maroon-dark);
  padding: 10px 12px; border-radius: 10px; font-size: .9rem; margin: 0 0 16px;
}

.slots { display: grid; gap: 18px; max-height: 380px; overflow-y: auto; }
.slot-day { font-weight: 700; font-size: .9rem; margin-bottom: 8px; color: var(--maroon-dark); }
.slot-row { display: flex; flex-wrap: wrap; gap: 8px; }
.slot-btn {
  border: 1px solid var(--line); background: #fff; border-radius: 8px;
  padding: 8px 12px; cursor: pointer; font-size: .9rem; font-weight: 600;
}
.slot-btn:hover { border-color: var(--maroon); color: var(--maroon); }

.msg { font-size: .9rem; margin-top: 14px; min-height: 1.2em; }
.msg.ok { color: var(--ok); }
.msg.err { color: var(--err); }
.muted { color: var(--muted); }

#done-body a { color: var(--maroon); }
.ref {
  font-family: ui-monospace, Menlo, Consolas, monospace; font-weight: 700;
  background: #faf6ec; padding: 2px 8px; border-radius: 6px;
}
.spinner { color: var(--muted); font-size: .9rem; }