:root {
  color-scheme: light;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-soft: #eff6ff;
  --ink: #172033;
  --muted: #64748b;
  --line: #dbe4ef;
  --surface: #ffffff;
  --background: #f3f6fb;
  --danger: #b91c1c;
  --success: #15803d;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--background);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font: inherit; }
.page-shell { width: min(100% - 32px, 940px); margin: 0 auto; padding: 34px 0 56px; }
.hero { display: flex; align-items: flex-start; gap: 18px; margin-bottom: 26px; }
.brand-mark {
  display: grid; flex: 0 0 56px; width: 56px; height: 56px; place-items: center;
  border-radius: 16px; color: white; background: var(--blue); font-weight: 800; letter-spacing: .04em;
}
.eyebrow { margin: 0 0 5px; color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: .14em; }
h1 { margin: 0; font-size: clamp(27px, 5vw, 38px); line-height: 1.2; }
.hero-copy { max-width: 620px; margin: 10px 0 0; color: var(--muted); line-height: 1.65; }
.booking-card { padding: 28px; border: 1px solid var(--line); border-radius: 22px; background: var(--surface); box-shadow: 0 16px 50px rgba(28, 52, 88, .07); }
.customer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
label { display: grid; gap: 8px; color: #334155; font-weight: 650; }
label span em { color: var(--danger); font-style: normal; }
input, select, textarea {
  width: 100%; min-height: 48px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 11px;
  color: var(--ink); background: #fff; outline: none; transition: border-color .15s, box-shadow .15s;
}
textarea { min-height: 78px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(37, 99, 235, .12); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin: 32px 0 18px; }
.section-heading h2 { margin: 0; font-size: 21px; }
.section-heading p { margin: 6px 0 0; color: var(--muted); font-size: 14px; }
.groups { display: grid; gap: 16px; }
.order-group { position: relative; padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: #fbfdff; }
.order-group h3 { margin: 0 0 16px; color: var(--blue-dark); font-size: 16px; }
.order-grid { display: grid; grid-template-columns: 1.15fr 1fr 1fr; gap: 14px; }
.order-remark { margin-top: 14px; }
.remove-group { position: absolute; top: 14px; right: 14px; padding: 6px 9px; border: 0; color: var(--muted); background: transparent; cursor: pointer; }
.remove-group:hover { color: var(--danger); }
.button { min-height: 46px; padding: 11px 18px; border: 0; border-radius: 11px; font-weight: 750; cursor: pointer; transition: background .15s, transform .15s; }
.button:active { transform: translateY(1px); }
.button-primary { width: 100%; margin-top: 18px; color: #fff; background: var(--blue); font-size: 17px; }
.button-primary:hover { background: var(--blue-dark); }
.button-primary:disabled { cursor: wait; opacity: .55; }
.button-secondary { flex-shrink: 0; color: var(--blue); background: var(--blue-soft); }
.button-secondary:hover { background: #dbeafe; }
.form-message { display: none; margin-top: 20px; padding: 13px 15px; border-radius: 11px; line-height: 1.6; }
.form-message.error { display: block; color: var(--danger); background: #fef2f2; }
.form-message.success { display: block; color: var(--success); background: #f0fdf4; }
.privacy-note { margin: 16px 0 0; color: var(--muted); font-size: 12px; line-height: 1.7; text-align: center; }
.honeypot { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
@media (max-width: 720px) {
  .page-shell { width: min(100% - 22px, 940px); padding-top: 22px; }
  .booking-card { padding: 20px 16px; border-radius: 18px; }
  .customer-grid, .order-grid { grid-template-columns: 1fr; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .button-secondary { width: 100%; }
  .order-group { padding: 18px 14px; }
  .order-group h3 { padding-right: 62px; }
}