.quick-book {
  position: fixed;
  left: 24px;
  right: 24px;
  bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  z-index: 10000;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px 20px;
  width: auto;
  margin: 0;
  padding: 18px clamp(16px, 4vw, 48px);
  box-sizing: border-box;
  background: rgba(0, 0, 0, 0);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  color: #fff;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 100vw;
  overflow: hidden;
}

.quick-book__field {
  position: relative;
  display: block;
  min-width: 160px;
  flex: 1 1 180px;
  max-width: 320px;
}

.quick-book__field input,
.quick-book__field select {
  width: 100%;
  height: 60px;
  padding: 24px 24px 8px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 0;
  background: rgba(0, 0, 0, 0.35);
  color: #fff;
  font: inherit;
  font-size: 0.95rem;
  box-sizing: border-box;
  color-scheme: dark;
  border-radius: 100vw;
}

.quick-book__field input[type="date"] {
  display: block;
  min-height: 60px;
  max-height: 60px;
  line-height: 1.2;
  padding-right: 16px;
}

.quick-book__field input[type="date"]::-webkit-calendar-picker-indicator {
  opacity: 1;
  width: 16px;
  height: 16px;
  cursor: pointer;
  margin: 0;
}

.quick-book__field input[type="date"]::-webkit-date-and-time-value {
  text-align: left;
  min-height: 0;
  height: 1.2em;
  margin: 0;
  padding: 0;
}

.quick-book__field input[type="date"]::-webkit-datetime-edit,
.quick-book__field input[type="date"]::-webkit-datetime-edit-fields-wrapper,
.quick-book__field input[type="date"]::-webkit-datetime-edit-text,
.quick-book__field input[type="date"]::-webkit-datetime-edit-month-field,
.quick-book__field input[type="date"]::-webkit-datetime-edit-day-field,
.quick-book__field input[type="date"]::-webkit-datetime-edit-year-field {
  padding: 0;
  margin: 0;
  line-height: 1.2;
}

.quick-book__field select {
  appearance: none;
  -webkit-appearance: none;
  background-color: rgba(0, 0, 0, 0.35);
  background-image: linear-gradient(45deg, transparent 50%, #fff 50%),
    linear-gradient(135deg, #fff 50%, transparent 50%);
  background-position:
    calc(100% - 18px) calc(50% + 4px),
    calc(100% - 12px) calc(50% + 4px);
  background-size:
    6px 6px,
    6px 6px;
  background-repeat: no-repeat;
  padding-right: 36px;
}

.quick-book__field select option {
  background: #1a1a1a;
  color: #fff;
}

.quick-book__field label {
  position: absolute;
  left: 24px;
  top: 12px;
  margin: 0;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
  pointer-events: none;
  transition:
    top 0.15s ease,
    transform 0.15s ease,
    font-size 0.15s ease,
    color 0.15s ease;
  z-index: 1;
}

.quick-book__field input:focus + label,
.quick-book__field input:not(:placeholder-shown) + label,
.quick-book__field select:focus + label,
.quick-book__field.select-filled label,
.quick-book__field.is-filled label {
  top: 12px;
  transform: none;
  font-size: 0.65rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.75);
}

.quick-book__field input:focus,
.quick-book__field select:focus {
  outline: 2px solid #c4031e;
  outline-offset: 1px;
  border-color: #c4031e;
  background: rgba(0, 0, 0, 0.5);
}

.quick-book__field input:focus + label,
.quick-book__field select:focus + label {
  color: #fff;
}

.quick-book__submit {
  height: 60px;
  line-height: 60px;
}

.quick-book__toggle {
  display: none;
}

.quick-book__field.is-invalid input,
.quick-book__field.is-invalid select {
  border-color: #c4031e;
}

@media (max-width: 768px) {
  .quick-book {
    left: 8px;
    right: 8px;
    bottom: calc(8px + env(safe-area-inset-bottom, 0px));
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: stretch;
    justify-content: flex-start;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 24px;
  }

  .quick-book__field,
  .quick-book__submit {
    display: block;
    flex: 0 0 auto;
    width: 100% !important;
    max-width: none !important;
    min-width: 0 !important;
  }

  .quick-book__toggle {
    display: none;
    width: 100%;
    height: 60px;
    line-height: 60px;
    cursor: pointer;
    margin: 0;
  }

  .quick-book__toggle .fa {
    margin-right: 8px;
  }

  .quick-book.is-collapsed {
    gap: 0;
    padding: 8px 12px;
  }

  .quick-book.is-collapsed .quick-book__field,
  .quick-book.is-collapsed .quick-book__submit {
    display: none;
  }

  .quick-book.is-collapsed .quick-book__toggle {
    display: block;
  }
}