/* ==========================================================================
   PEPTIDESTX DESIGN SYSTEM — FORMS & INPUTS
   ========================================================================== */

/* ---------------------------------------------------------------------
   SHARED FIELD WRAPPER
   --------------------------------------------------------------------- */

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field__label {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 13px;
  color: var(--color-obsidian);
}

.field__label .is-optional {
  color: var(--color-graphite-500);
  font-weight: 400;
}

.field__hint {
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--color-graphite-500);
}

/* ---------------------------------------------------------------------
   TEXT INPUT
   --------------------------------------------------------------------- */

.input {
  height: var(--control-height-md);
  width: 100%;
  padding: 0 var(--space-4);
  background: var(--color-white);
  border: 1px solid var(--color-graphite-border-light-strong);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-obsidian);
  transition: border-color var(--dur-base) var(--ease-out);
}

.input::placeholder {
  color: var(--color-graphite-500);
}

.input:hover {
  border-color: var(--color-graphite-500);
}

.input:focus {
  outline: none;
  border-color: var(--color-royal-violet);
}

.input:disabled {
  background: var(--color-cloud-grey);
  color: var(--color-graphite-300);
  border-color: var(--color-graphite-border-light);
  cursor: not-allowed;
}

/* Validation states */
.field.has-error .input {
  border-color: var(--color-signal-red);
}

.field.has-error .field__message {
  color: var(--color-signal-red);
}

.field.has-success .input {
  border-color: var(--color-verified-green);
}

.field.has-success .field__message {
  color: var(--color-verified-green);
}

.field__message {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-body);
  font-size: 12px;
}

.field__message svg {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
}

/* Mono-input variant (batch numbers, CAS lookups) */
.input--mono {
  font-family: var(--font-mono);
  font-size: 14px;
}

.input--mono::placeholder {
  font-family: var(--font-mono);
}

/* ---------------------------------------------------------------------
   SEARCH BAR (inline, e.g. COA / batch lookup — standalone variant;
   header search overlay variant lives in header.css)
   --------------------------------------------------------------------- */

.search-bar {
  display: flex;
  height: var(--control-height-lg);
  max-width: 480px;
}

.search-bar__input {
  flex: 1;
  border: 1px solid var(--color-graphite-border-light-strong);
  border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  padding: 0 var(--space-5);
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--color-obsidian);
  transition: border-color var(--dur-base) var(--ease-out);
}

.search-bar__input::placeholder {
  color: var(--color-graphite-500);
  font-family: var(--font-mono);
}

.search-bar:focus-within .search-bar__input {
  border-color: var(--color-royal-violet);
}

.search-bar__button {
  width: 56px;
  flex-shrink: 0;
  background: var(--color-royal-violet);
  border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  transition: background-color var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}

.search-bar__button:hover {
  background: var(--color-royal-violet-hover);
  transform: scale(1.03);
}

.search-bar__button svg {
  width: 20px;
  height: 20px;
}

.search-bar__loading {
  display: none;
}

.search-bar.is-loading .search-bar__icon {
  display: none;
}

.search-bar.is-loading .search-bar__loading {
  display: flex;
  gap: 3px;
}

.search-bar__loading span {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-white);
  animation: search-pulse 1.2s ease-in-out infinite;
}

.search-bar__loading span:nth-child(2) { animation-delay: 0.15s; }
.search-bar__loading span:nth-child(3) { animation-delay: 0.3s; }

@keyframes search-pulse {
  0%, 80%, 100% { opacity: 0.3; }
  40% { opacity: 1; }
}

@media (max-width: 480px) {
  .search-bar {
    max-width: none;
    height: 48px;
  }
}

/* ---------------------------------------------------------------------
   FILTERS (collection/shop page sidebar & mobile filter sheet)
   --------------------------------------------------------------------- */

.filter-group {
  padding-block: var(--space-5);
  border-bottom: 1px solid var(--color-graphite-border-light);
}

.filter-group__title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  color: var(--color-obsidian);
  margin-bottom: var(--space-4);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
}

.filter-group__title svg {
  width: 16px;
  height: 16px;
  color: var(--color-graphite-500);
  transition: transform var(--dur-base) var(--ease-out);
}

.filter-group.is-collapsed .filter-group__title svg {
  transform: rotate(-90deg);
}

.filter-group__options {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.filter-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid var(--color-graphite-border-light-strong);
  border-radius: 999px;
  background: var(--color-white);
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-obsidian);
  transition: border-color var(--dur-base) var(--ease-out), background-color var(--dur-base) var(--ease-out);
}

.filter-chip:hover {
  border-color: var(--color-royal-violet);
}

.filter-chip.is-active {
  background: var(--color-obsidian);
  border-color: var(--color-obsidian);
  color: var(--color-white);
}

.filter-chip__remove {
  width: 12px;
  height: 12px;
}

.active-filters-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-5);
}

.active-filters-bar__clear {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-royal-violet);
}

/* ---------------------------------------------------------------------
   DROPDOWN / SELECT
   --------------------------------------------------------------------- */

.dropdown {
  position: relative;
}

.dropdown__trigger {
  height: var(--control-height-md);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: 0 var(--space-4);
  background: var(--color-white);
  border: 1px solid var(--color-graphite-border-light-strong);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-obsidian);
  transition: border-color var(--dur-base) var(--ease-out);
}

.dropdown__trigger:hover {
  border-color: var(--color-graphite-500);
}

.dropdown__trigger[aria-expanded="true"] {
  border-color: var(--color-royal-violet);
}

.dropdown__trigger svg {
  width: 16px;
  height: 16px;
  color: var(--color-graphite-500);
  transition: transform var(--dur-base) var(--ease-out);
  flex-shrink: 0;
}

.dropdown__trigger[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.dropdown__placeholder {
  color: var(--color-graphite-500);
}

.dropdown__panel {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  z-index: var(--z-dropdown);
  background: var(--color-white);
  border: 1px solid var(--color-graphite-border-light);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-dropdown);
  padding: var(--space-2);
  max-height: 280px;
  overflow-y: auto;
  opacity: 0;
  transform: translateY(-4px);
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}

.dropdown__panel.is-open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.dropdown__option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-obsidian);
}

.dropdown__option:hover,
.dropdown__option.is-highlighted {
  background: var(--color-cloud-grey);
}

.dropdown__option.is-selected {
  color: var(--color-royal-violet);
  font-weight: 500;
}

.dropdown__option.is-selected svg {
  width: 14px;
  height: 14px;
}

/* ---------------------------------------------------------------------
   CHECKBOX
   --------------------------------------------------------------------- */

.checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
}

.checkbox__input {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 1px;
  border: 1px solid var(--color-graphite-border-light-strong);
  border-radius: 4px;
  background: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--dur-base) var(--ease-out), background-color var(--dur-base) var(--ease-out);
}

.checkbox__input::after {
  content: "";
  width: 10px;
  height: 10px;
  opacity: 0;
  transform: scale(0.5);
  background-color: var(--color-white);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3'%3E%3Cpath d='M4 12l6 6L20 6'/%3E%3C/svg%3E") center/contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3'%3E%3Cpath d='M4 12l6 6L20 6'/%3E%3C/svg%3E") center/contain no-repeat;
  transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}

.checkbox__input:checked {
  background: var(--color-royal-violet);
  border-color: var(--color-royal-violet);
}

.checkbox__input:checked::after {
  opacity: 1;
  transform: scale(1);
}

.checkbox__input:hover {
  border-color: var(--color-royal-violet);
}

.checkbox__input:disabled {
  background: var(--color-cloud-grey);
  border-color: var(--color-graphite-border-light);
  cursor: not-allowed;
}

.checkbox__label {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-obsidian);
  line-height: 18px;
}

/* ---------------------------------------------------------------------
   RADIO BUTTON
   --------------------------------------------------------------------- */

.radio {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
}

.radio__input {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 1px;
  border: 1px solid var(--color-graphite-border-light-strong);
  border-radius: 50%;
  background: var(--color-white);
  position: relative;
  transition: border-color var(--dur-base) var(--ease-out);
}

.radio__input::after {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--color-royal-violet);
  opacity: 0;
  transform: scale(0.4);
  transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}

.radio__input:checked {
  border-color: var(--color-royal-violet);
}

.radio__input:checked::after {
  opacity: 1;
  transform: scale(1);
}

.radio__input:hover {
  border-color: var(--color-royal-violet);
}

.radio__label {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-obsidian);
  line-height: 18px;
}

/* ---------------------------------------------------------------------
   QUANTITY SELECTOR
   --------------------------------------------------------------------- */

.qty-selector {
  display: inline-flex;
  align-items: center;
  height: var(--control-height-md);
  border: 1px solid var(--color-graphite-border-light-strong);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.qty-selector__btn {
  width: 44px;
  height: 100%;
  background: var(--color-white);
  border: none;
  color: var(--color-obsidian);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--dur-base) var(--ease-out);
}

.qty-selector__btn:hover:not(:disabled) {
  background: var(--color-cloud-grey);
}

.qty-selector__btn:disabled {
  color: var(--color-graphite-300);
  cursor: not-allowed;
}

.qty-selector__btn svg {
  width: 14px;
  height: 14px;
}

.qty-selector__input {
  width: 48px;
  height: 100%;
  border: none;
  border-left: 1px solid var(--color-graphite-border-light-strong);
  border-right: 1px solid var(--color-graphite-border-light-strong);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--color-obsidian);
  -moz-appearance: textfield;
}

.qty-selector__input::-webkit-outer-spin-button,
.qty-selector__input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.qty-selector__input:focus {
  outline: none;
}

.qty-selector__unit-note {
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--color-graphite-500);
  margin-top: 6px;
}