:root {
  --cream: #FAF6EA;
  --cream-surface: #FFFDF8;
  --ink: #4A3A3E;
  --ink-soft: #8F7C80;
  --line: rgba(74, 58, 62, 0.12);
  --coral: #D9927E;
  --coral-deep: #B8654A;
  --coral-tint: #F6E6DF;
  --lav-grey: #C8C1C9;
  --blue: #B4C2CA;
  --blue-deep: #5C7480;
  --blue-tint: #E6EBED;
  --shadow: 0 1px 2px rgba(74,58,62,0.06), 0 10px 26px -16px rgba(74,58,62,0.22);
  --radius: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --cream: #211A1C;
    --cream-surface: #2A2224;
    --ink: #F0E6E8;
    --ink-soft: #C2AEB2;
    --line: rgba(240, 230, 232, 0.14);
    --coral: #E3A996;
    --coral-deep: #E3987D;
    --coral-tint: #3A2B28;
    --lav-grey: #D6D0D8;
    --blue: #A9C0CB;
    --blue-deep: #9BB9C6;
    --blue-tint: #26343A;
    --shadow: 0 1px 2px rgba(0,0,0,0.35), 0 10px 30px -16px rgba(0,0,0,0.6);
  }
}

* { box-sizing: border-box; }

html {
  background: var(--cream);
  scrollbar-color: var(--blue-deep) var(--cream);
}

body {
  margin: 0;
  min-height: 100%;
  background: var(--cream);
  color: var(--ink);
  font-family: "Noto Serif TC", serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}
::-webkit-scrollbar-track {
  background: var(--cream);
}
::-webkit-scrollbar-thumb {
  background: var(--lav-grey);
  border-radius: 8px;
  border: 2px solid var(--cream);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--blue-deep);
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 120px;
}

.site-header {
  display: flex;
  justify-content: center;
  margin-bottom: 28px;
}
.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.brand-mark {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--coral-deep);
}
.brand-en {
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--ink-soft);
}
.brand-divider {
  width: 64px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--coral), var(--lav-grey), var(--blue));
}

.booking-card {
  background: var(--cream-surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 40px 32px 32px;
}

.intro { text-align: center; margin-bottom: 32px; }
.kicker {
  display: inline-block;
  margin: 0 0 14px;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--coral-deep);
  font-weight: 700;
}
.intro h1 {
  margin: 0 0 10px;
  font-size: 30px;
  font-weight: 700;
  color: var(--ink);
}
.lede {
  margin: 0 auto;
  max-width: 420px;
  color: var(--ink-soft);
  font-size: 15px;
}

/* Steps */
.steps {
  display: flex;
  justify-content: space-between;
  margin-bottom: 36px;
  gap: 4px;
}
.step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  opacity: 0.4;
}
.step.is-active, .step.is-done { opacity: 1; }
.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--cream);
  border: 1.5px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-soft);
}
.step.is-active .step-num {
  background: var(--coral-deep);
  border-color: var(--coral-deep);
  color: #FFF9F6;
}
.step.is-done .step-num {
  background: var(--blue-deep);
  border-color: var(--blue-deep);
  color: #FFF9F6;
}
.step-label {
  font-size: 11px;
  color: var(--ink-soft);
  text-align: center;
}
.step.is-active .step-label { color: var(--coral-deep); font-weight: 500; }

/* Panels */
.panel { display: none; }
.panel.is-visible { display: block; animation: fadeIn 0.35s ease; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.back-link {
  background: none;
  border: none;
  color: var(--blue-deep);
  font-size: 13px;
  cursor: pointer;
  padding: 0 0 18px;
  font-family: inherit;
}
.back-link:hover { color: var(--coral-deep); }

/* Service cards */
.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}
@media (max-width: 480px) {
  .service-grid { grid-template-columns: 1fr; }
}
.service-card {
  border: 1px solid var(--line);
  background: var(--cream-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.service-card:hover {
  border-color: var(--coral);
  transform: translateY(-2px);
  box-shadow: 0 10px 22px -12px rgba(184,101,74,0.35);
}
.service-sub {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--blue-deep);
  font-weight: 700;
}
.service-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}
.service-price {
  font-size: 15px;
  color: var(--coral-deep);
  font-weight: 500;
  margin-top: 4px;
}

.hint {
  margin-top: 22px;
  padding: 22px 24px;
  border-radius: var(--radius);
  background: var(--blue-tint);
  border: 1px solid var(--line);
  color: var(--ink);
  font-size: 14.5px;
  text-align: center;
}
.hint a { color: var(--coral-deep); font-weight: 500; }

.selected-service {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0 0 20px;
  padding: 10px 14px;
  background: var(--coral-tint);
  border-radius: 10px;
}

/* Calendar */
.calendar-head {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 14px;
  font-weight: 500;
}
.cal-nav {
  width: 30px; height: 30px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--cream-surface);
  cursor: pointer;
  font-size: 16px;
  color: var(--ink);
}
.cal-nav:hover { border-color: var(--coral); color: var(--coral-deep); }

.day-picker {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  margin-bottom: 28px;
}
.day-btn {
  border: 1px solid var(--line);
  background: var(--cream-surface);
  border-radius: 12px;
  padding: 10px 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  font-family: inherit;
  color: var(--ink);
}
.day-weekday { font-size: 11px; color: var(--ink-soft); }
.day-num { font-size: 16px; font-weight: 500; }
.day-btn:hover:not(.is-disabled) { border-color: var(--coral); }
.day-btn.is-selected {
  background: var(--coral-deep);
  border-color: var(--coral-deep);
}
.day-btn.is-selected .day-weekday,
.day-btn.is-selected .day-num { color: #FFF9F6; }
.day-btn.is-disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.slots-title {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0 0 10px;
}
.slot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
@media (max-width: 480px) {
  .slot-grid { grid-template-columns: repeat(3, 1fr); }
}
.slot-btn {
  border: 1px solid var(--line);
  background: var(--cream-surface);
  border-radius: 10px;
  padding: 10px 4px;
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
  color: var(--ink);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.slot-btn:hover { border-color: var(--blue-deep); background: var(--blue-tint); }
.slot-empty {
  grid-column: 1 / -1;
  color: var(--ink-soft);
  font-size: 13px;
  text-align: center;
  padding: 20px 0;
}

/* Form */
.info-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.info-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--ink-soft);
}
.info-form em { color: var(--coral-deep); font-style: normal; }
.info-form input,
.info-form textarea {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 12px;
  font-size: 15px;
  font-family: inherit;
  color: var(--ink);
  background: var(--cream-surface);
  resize: vertical;
}
.info-form input:focus,
.info-form textarea:focus {
  outline: none;
  border-color: var(--coral-deep);
}

.form-error {
  color: #B04040;
  font-size: 13px;
  background: #FBEAEA;
  padding: 10px 12px;
  border-radius: 8px;
}

.btn-primary, .btn-secondary {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  border: none;
  border-radius: 999px;
  padding: 14px 24px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  font-family: inherit;
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}
.btn-primary {
  background: var(--coral-deep);
  color: #FFF9F6;
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 22px -12px rgba(184,101,74,0.45); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; transform: none; box-shadow: none; }

.btn-secondary {
  background: transparent;
  color: var(--blue-deep);
  border: 1.5px solid var(--blue-deep);
  margin-top: 8px;
}
.btn-secondary:hover { transform: translateY(-1px); background: rgba(92, 116, 128, 0.08); }

/* Confirmation */
.confirm { text-align: center; padding: 20px 0; }
.confirm-icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--coral-deep);
  color: #FFF9F6;
  font-size: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
}
.confirm h2 { margin: 0 0 10px; font-size: 22px; }
.confirm-line {
  font-size: 15px;
  color: var(--coral-deep);
  font-weight: 500;
  background: var(--coral-tint);
  display: inline-block;
  padding: 10px 18px;
  border-radius: 10px;
  margin-bottom: 16px;
}
.confirm-note {
  font-size: 13px;
  color: var(--ink-soft);
  max-width: 380px;
  margin: 0 auto 20px;
}
.confirm-note a { color: var(--coral-deep); }

.site-footer {
  text-align: center;
  margin-top: 28px;
  font-size: 12px;
  color: var(--ink-soft);
}