/* =========================================================
   Booking Form — cinematic, multi-step
   ========================================================= */

.booking {
  background: linear-gradient(180deg, rgba(17,17,17,0.94), rgba(10,10,10,0.94));
  border: 1px solid var(--hairline);
  padding: 36px;
  position: relative;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.55);
}
@media (max-width: 640px) {
  .booking { padding: 24px 20px; }
  .booking-head { margin-bottom: 22px; padding-bottom: 16px; gap: 10px; }
  .booking-head h3 { font-size: 20px; }
}
.booking::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(201,169,97,0.06), transparent 45%);
}

.booking-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--hairline-2);
}
.booking-head h3 {
  font-size: 24px;
  line-height: 1.15;
}
.booking-head h3 em { color: var(--gold); }
.booking-head .meta { color: var(--gold); }

.booking-progress {
  height: 2px;
  background: var(--hairline-2);
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}
.booking-progress::before {
  content: '';
  position: absolute;
  inset: 0;
  width: 33%;
  background: linear-gradient(90deg, var(--gold-deep), var(--gold));
  transition: width 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.booking-step { display: none; animation: stepIn 0.4s ease; }
.booking-step.is-active { display: block; }
@keyframes stepIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 14px;
}
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }

.field {
  position: relative;
}
.field label {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ivory-mute);
  margin-bottom: 8px;
}
.field .required { color: var(--gold); margin-left: 4px; }

.field input,
.field select,
.field textarea {
  width: 100%;
  background: rgba(0,0,0,0.35);
  border: 1px solid var(--hairline-2);
  color: var(--ivory);
  padding: 14px 16px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s, background 0.2s;
  border-radius: 0;
  appearance: none;
  -webkit-appearance: none;
}
.field textarea { resize: vertical; min-height: 96px; }
.field input::placeholder { color: rgba(245,241,232,0.3); }
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--gold);
  background: rgba(0,0,0,0.5);
}
.field input::-webkit-calendar-picker-indicator,
.field input[type="time"]::-webkit-calendar-picker-indicator { filter: invert(0.8) sepia(1) hue-rotate(10deg) saturate(2); opacity: 0.6; cursor: pointer; }

.field select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path fill='none' stroke='%23c9a961' stroke-width='1.5' d='M1 1l4 4 4-4'/></svg>");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 42px;
}
.field select option { background: var(--ink-2); color: var(--ivory); }

/* autocomplete list */
.ac-list {
  position: absolute;
  top: calc(100% + 4px);
  left: 0; right: 0;
  background: var(--ink-2);
  border: 1px solid var(--hairline);
  box-shadow: 0 20px 40px rgba(0,0,0,0.6);
  max-height: 260px;
  overflow-y: auto;
  z-index: 20;
  display: none;
}
.ac-list.is-open { display: block; }
.ac-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 14px;
  text-align: left;
  font-size: 13px;
  color: var(--ivory-dim);
  border-bottom: 1px solid var(--hairline-2);
  background: transparent;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.ac-item:last-child { border-bottom: 0; }
.ac-item:hover, .ac-item.is-active { background: var(--ink-3); color: var(--ivory); }
.ac-item svg { flex: none; color: var(--gold); }
.ac-item mark { background: transparent; color: var(--gold); font-weight: 500; }
.ac-empty { padding: 12px 14px; font-size: 12px; color: var(--ivory-mute); font-style: italic; }

/* Round trip + collapsible fields */
.field-checkbox {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  cursor: pointer;
  user-select: none;
}
.field-checkbox input { position: absolute; opacity: 0; pointer-events: none; }
.field-checkbox .box {
  width: 18px; height: 18px;
  border: 1px solid var(--hairline);
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.field-checkbox input:checked ~ .box {
  background: var(--gold);
  border-color: var(--gold);
}
.field-checkbox input:checked ~ .box::after {
  content: '';
  width: 5px; height: 10px;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(45deg) translate(-1px, -1px);
}
.field-checkbox span.label-text {
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--ivory-dim);
}
.field-checkbox:hover .box { border-color: var(--gold); }

.collapse {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, margin 0.4s ease;
  margin: 0;
}
.collapse.is-open {
  max-height: 280px;
  margin-top: 14px;
}

/* Vehicle cards (radio) */
.vehicle-picker {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}
@media (max-width: 640px) { .vehicle-picker { grid-template-columns: 1fr; } }
.vehicle-picker label {
  cursor: pointer;
  border: 1px solid var(--hairline-2);
  padding: 16px 14px;
  text-align: center;
  transition: all 0.2s;
  background: rgba(0,0,0,0.3);
  position: relative;
}
.vehicle-picker input { position: absolute; opacity: 0; pointer-events: none; }
.vehicle-picker input:checked ~ .v-inner {
  color: var(--gold);
}
.vehicle-picker label:has(input:checked) {
  border-color: var(--gold);
  background: rgba(201,169,97,0.06);
}
.vehicle-picker label:hover { border-color: var(--hairline); }
.vehicle-picker .v-name { font-family: var(--serif); font-size: 16px; margin-bottom: 4px; }
.vehicle-picker .v-sub { font-family: var(--mono); font-size: 10px; letter-spacing: 0.15em; color: var(--ivory-mute); text-transform: uppercase; }

/* Stepper */
.stepper {
  display: flex;
  align-items: center;
  background: rgba(0,0,0,0.35);
  border: 1px solid var(--hairline-2);
}
.stepper button {
  width: 46px; height: 46px;
  font-size: 18px;
  color: var(--gold);
  transition: background 0.2s;
}
.stepper button:hover { background: rgba(201,169,97,0.1); }
.stepper input {
  flex: 1;
  text-align: center;
  border: 0;
  background: transparent;
  color: var(--ivory);
  font-size: 15px;
  -moz-appearance: textfield;
}
.stepper input::-webkit-outer-spin-button,
.stepper input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

/* Step nav */
.step-nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--hairline-2);
}
.step-nav .btn { flex: 1; }
.step-nav .btn-ghost:first-child { flex: 0 1 auto; min-width: 100px; }

/* Success */
.booking-success {
  display: none;
  text-align: center;
  padding: 20px 0;
}
.booking-success.is-visible { display: block; }
.booking-success .check {
  width: 60px; height: 60px; margin: 0 auto 20px;
  border: 1px solid var(--gold);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--gold);
}
.booking-success h4 { font-size: 24px; margin-bottom: 10px; }
.booking-success p { color: var(--ivory-dim); font-size: 14px; }
.booking-success .summary {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--gold);
  margin-top: 18px;
  padding: 10px 16px;
  border: 1px dashed var(--hairline);
  letter-spacing: 0.05em;
}