/* Booking form. Loaded only by booking.html so the homepage doesn't pay for it.
   Same ivory/noir/champagne language as the site; the panel is raised on white so
   the form reads as a distinct, focused task. */

.booking {
  position: relative;
  overflow: hidden;
  padding: clamp(3rem, 7vw, 5.5rem) 0 clamp(4rem, 9vw, 7rem);
  min-height: 70vh;
}

.booking::before {
  content: "";
  position: absolute;
  width: 44rem;
  height: 44rem;
  top: -20rem;
  right: -14rem;
  border-radius: 50%;
  filter: blur(90px);
  background: radial-gradient(circle, rgb(184 147 85 / 0.16), transparent 68%);
  pointer-events: none;
}

.booking .container {
  position: relative;
  z-index: 1;
}

.booking__shell {
  max-width: 46rem;
  margin: 0 auto;
  padding: clamp(1.8rem, 4vw, 3.4rem);
  background: rgb(255 255 255 / 0.86);
  backdrop-filter: blur(20px);
  border: 1px solid rgb(255 255 255 / 0.9);
  border-radius: var(--radius-lg);
  box-shadow: 0 40px 90px -40px rgb(11 19 16 / 0.3);
}

.booking__head {
  margin-bottom: 2.4rem;
}

.booking__head h1 {
  margin-top: 1.1rem;
  font-family: var(--display);
  font-size: clamp(2.1rem, 4.6vw, 3rem);
  font-weight: 300;
}

body.lang-zh .booking__head h1 {
  font-size: clamp(1.7rem, 3.6vw, 2.3rem);
}

.booking__head p {
  margin-top: 1rem;
}

/* ---------- Stepper ---------- */

.stepper {
  display: flex;
  gap: 0.6rem;
  margin: 0 0 2.6rem;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.stepper li {
  flex: 1;
  min-width: 0;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  counter-increment: step;
  transition: color 0.5s var(--ease), border-color 0.5s var(--ease);
}

body.lang-zh .stepper li {
  letter-spacing: 0.04em;
  font-size: 0.78rem;
  text-transform: none;
}

.stepper li::before {
  content: "0" counter(step) " ";
  font-family: var(--display);
  color: var(--champagne-ink);
}

.stepper li[data-state="done"] {
  border-top-color: var(--champagne-ink);
  color: var(--ink-mid);
}

.stepper li[data-state="current"] {
  border-top-color: var(--noir);
  color: var(--ink);
}

@media (max-width: 640px) {
  /* Labels get cramped on narrow screens — the rule plus the numeral still orients you. */
  .stepper li span {
    display: none;
  }

  .stepper li::before {
    content: "0" counter(step);
  }
}

/* ---------- Steps ---------- */

.step fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

.step legend {
  padding: 0;
  font-family: var(--display);
  font-size: 1.75rem;
  font-weight: 300;
  color: var(--ink);
}

body.lang-zh .step legend {
  font-size: 1.4rem;
  font-weight: 400;
}

.step__hint {
  margin: 0.7rem 0 1.8rem;
  font-size: 0.96rem;
}

/* ---------- Choice cards ---------- */

.choices {
  display: grid;
  gap: 0.6rem;
  grid-template-columns: repeat(auto-fit, minmax(205px, 1fr));
}

.choice {
  position: relative;
  display: block;
}

.choice input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.choice__body {
  display: block;
  height: 100%;
  padding: 1.1rem 1.2rem;
  background: rgb(255 255 255 / 0.6);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.4s var(--ease), background-color 0.4s var(--ease);
}

.choice__body:hover {
  border-color: var(--champagne-ink);
  background: var(--white);
}

.choice input:checked + .choice__body {
  border-color: var(--noir);
  background: var(--white);
  box-shadow: inset 0 0 0 1px var(--noir);
}

/* The input is visually hidden, so its focus ring has to land on the card. */
.choice input:focus-visible + .choice__body {
  outline: 2px solid var(--champagne-ink);
  outline-offset: 3px;
}

.choice__title {
  display: block;
  font-family: var(--display);
  font-size: 1.2rem;
  color: var(--ink);
}

body.lang-zh .choice__title {
  font-size: 1.05rem;
}

.choice__meta {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

body.lang-zh .choice__meta {
  letter-spacing: 0.03em;
  font-size: 0.82rem;
  text-transform: none;
}

/* ---------- Time slots ---------- */

.slots {
  display: grid;
  gap: 0.45rem;
  grid-template-columns: repeat(auto-fill, minmax(88px, 1fr));
  margin-top: 0.6rem;
}

.slot__body {
  padding: 0.7rem 0.3rem;
  text-align: center;
  font-family: var(--sans);
  font-size: 0.88rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
  color: var(--ink);
}

.choice input:disabled + .choice__body {
  color: var(--ink-soft);
  background: var(--ivory-deep);
  border-style: dashed;
  cursor: not-allowed;
  text-decoration: line-through;
  opacity: 0.75;
}

.choice input:disabled + .choice__body:hover {
  border-color: var(--line);
  background: var(--ivory-deep);
}

.slots__empty {
  padding: 1rem 0;
  font-size: 0.95rem;
}

/* ---------- Fields ---------- */

.field {
  margin-bottom: 1.5rem;
}

.field > label,
.field__label {
  display: block;
  margin-bottom: 0.55rem;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
}

body.lang-zh .field > label,
body.lang-zh .field__label {
  letter-spacing: 0.05em;
  font-size: 0.85rem;
  text-transform: none;
}

.field .optional {
  color: var(--ink-soft);
  font-weight: 300;
}

.input {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 300;
  color: var(--ink);
  background: rgb(255 255 255 / 0.7);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.4s var(--ease), background-color 0.4s var(--ease);
}

textarea.input {
  min-height: 7rem;
  resize: vertical;
}

.input:hover {
  border-color: var(--champagne-ink);
}

.input:focus {
  background: var(--white);
}

.input[aria-invalid="true"] {
  border-color: var(--danger);
  background: var(--danger-bg);
}

.field__error {
  display: block;
  margin-top: 0.5rem;
  color: var(--danger);
  font-size: 0.85rem;
}

.field__error:empty {
  display: none;
}

.checkbox {
  display: flex;
  gap: 0.8rem;
  align-items: flex-start;
  font-size: 0.95rem;
  font-weight: 300;
  letter-spacing: 0;
  text-transform: none;
  color: var(--ink-mid);
}

.checkbox input {
  margin-top: 0.42rem;
  width: 1rem;
  height: 1rem;
  accent-color: var(--noir);
  flex: none;
}

/* ---------- Error summary ---------- */

.error-summary {
  margin-bottom: 1.8rem;
  padding: 1.2rem 1.4rem;
  background: var(--danger-bg);
  border-left: 2px solid var(--danger);
  border-radius: var(--radius);
}

.error-summary h2 {
  font-family: var(--display);
  font-size: 1.15rem;
  color: var(--danger);
}

.error-summary ul {
  margin: 0.7rem 0 0;
  padding-left: 1.1rem;
  font-size: 0.92rem;
}

.error-summary a {
  color: var(--danger);
}

/* ---------- Review summary ---------- */

.summary {
  margin: 0 0 1.8rem;
  padding: 0;
}

.summary div {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
}

.summary div:first-child {
  border-top: 1px solid var(--line);
}

.summary dt {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

body.lang-zh .summary dt {
  letter-spacing: 0.04em;
  font-size: 0.85rem;
  text-transform: none;
}

.summary dd {
  margin: 0;
  font-family: var(--display);
  font-size: 1.15rem;
  text-align: right;
  color: var(--ink);
}

body.lang-zh .summary dd {
  font-size: 1rem;
  font-family: var(--sans);
}

/* ---------- Actions ---------- */

.actions {
  display: flex;
  gap: 0.7rem;
  margin-top: 2.2rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--line);
}

.actions .btn--primary {
  margin-left: auto;
}

.spinner {
  width: 0.9rem;
  height: 0.9rem;
  border: 1px solid rgb(248 245 239 / 0.35);
  border-top-color: var(--ivory);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---------- Result panels ---------- */

.result {
  text-align: center;
  padding: 1.5rem 0 0.5rem;
}

.result__icon {
  display: grid;
  place-items: center;
  width: 3.4rem;
  height: 3.4rem;
  margin: 0 auto 1.6rem;
  border-radius: 50%;
  border: 1px solid var(--champagne-ink);
  color: var(--champagne-ink);
}

.result--error .result__icon {
  border-color: var(--danger);
  color: var(--danger);
}

.result h2 {
  font-family: var(--display);
  font-size: 2.1rem;
  font-weight: 300;
}

body.lang-zh .result h2 {
  font-size: 1.6rem;
  font-weight: 400;
}

.result > p {
  margin: 1.1rem auto 0;
  max-width: 40ch;
}

.result .summary {
  margin-top: 2.4rem;
  text-align: left;
}

.reference {
  display: inline-block;
  margin-top: 1.6rem;
  padding: 0.7rem 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgb(255 255 255 / 0.6);
  font-family: var(--display);
  font-size: 1.2rem;
  letter-spacing: 0.16em;
  color: var(--ink);
}

.result__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  justify-content: center;
  margin-top: 2.4rem;
}