/**
 * KVS Catalog Variation Swatches — Frontend CSS
 * Design tokens + responsive layout
 */

/* --- Design Tokens --- */
:root {
  --kvs-cvs-color-bg: #ffffff;
  --kvs-cvs-color-surface: #f7f7f7;
  --kvs-cvs-color-border: #e0e0e0;
  --kvs-cvs-color-border-hover: #cccccc;
  --kvs-cvs-color-primary: #0073aa;
  --kvs-cvs-color-primary-hover: #005a87;
  --kvs-cvs-color-text: #333333;
  --kvs-cvs-color-text-muted: #777777;
  --kvs-cvs-color-disabled: #cccccc;
  --kvs-cvs-color-unavailable: #eeeeee;
  --kvs-cvs-color-success: #46b450;
  --kvs-cvs-color-danger: #dc3232;
  --kvs-cvs-radius: 4px;
  --kvs-cvs-gap: 8px;
  --kvs-cvs-gap-group: 12px;
  --kvs-cvs-swatch-size: 32px;
  --kvs-cvs-swatch-size-sm: 28px;
  --kvs-cvs-image-size: 40px;
  --kvs-cvs-image-size-sm: 36px;
  --kvs-cvs-btn-padding: 8px 14px;
  --kvs-cvs-transition: 0.15s ease-in-out;
  --kvs-cvs-shadow-focus: 0 0 0 2px rgba(0, 115, 170, 0.25);
  --kvs-cvs-z-tooltip: 100;
  --kvs-cvs-cta-gap: 10px;
  --kvs-cvs-cta-gap-mobile: 8px;
}

/* --- CTA Group --- */
.kvs-cvs-cta-group {
  display: flex;
  gap: var(--kvs-cvs-cta-gap, 10px);
}

.kvs-cvs-cta-group--row {
  flex-direction: row;
  flex-wrap: wrap;
}

.kvs-cvs-cta-group--column {
  flex-direction: column;
}

.kvs-cvs-cta-group--auto {
  flex-direction: row;
  flex-wrap: wrap;
}

@media (max-width: 600px) {
  .kvs-cvs-cta-group {
    gap: var(--kvs-cvs-cta-gap-mobile, 8px);
  }
  .kvs-cvs-cta-group--auto {
    flex-direction: column;
  }
}

/* --- Containers --- */
.kvs-cvs-catalog,
.kvs-cvs-product {
  font-family: inherit;
  font-size: 14px;
  line-height: 1.4;
  color: var(--kvs-cvs-color-text);
  margin-top: var(--kvs-cvs-gap-group);
}

.kvs-cvs-catalog:first-child,
.kvs-cvs-product:first-child {
  margin-top: 0;
}

/* --- Swatch Group --- */
.kvs-cvs-group {
  margin-bottom: var(--kvs-cvs-gap-group);
}

.kvs-cvs-group__label {
  display: block;
  font-weight: 600;
  font-size: 13px;
  margin-bottom: 6px;
  color: var(--kvs-cvs-color-text);
  text-transform: capitalize;
}

.kvs-cvs-group__swatches {
  display: flex;
  flex-wrap: wrap;
  gap: var(--kvs-cvs-gap);
  align-items: center;
}

/* --- Swatch Base --- */
.kvs-cvs-swatch {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--kvs-cvs-color-border);
  border-radius: var(--kvs-cvs-radius);
  background: var(--kvs-cvs-color-bg);
  color: var(--kvs-cvs-color-text);
  cursor: pointer;
  padding: 0;
  margin: 0;
  overflow: hidden;
  transition: border-color var(--kvs-cvs-transition),
              box-shadow var(--kvs-cvs-transition),
              transform var(--kvs-cvs-transition);
  user-select: none;
  -webkit-user-select: none;
}

.kvs-cvs-swatch:focus-visible {
  outline: none;
  box-shadow: var(--kvs-cvs-shadow-focus);
}

.kvs-cvs-swatch:hover:not(:disabled):not(.kvs-cvs-swatch--disabled):not(.kvs-cvs-swatch--unavailable) {
  border-color: var(--kvs-cvs-color-primary);
  transform: scale(1.05);
}

/* Swatch types: color */
.kvs-cvs-swatch--color {
  width: var(--kvs-cvs-swatch-size);
  height: var(--kvs-cvs-swatch-size);
  border-radius: 50%;
  padding: 2px;
  background-clip: content-box;
}

.kvs-cvs-swatch--color .kvs-cvs-swatch__text {
  display: none;
}

/* Swatch types: image */
.kvs-cvs-swatch--image {
  width: var(--kvs-cvs-image-size);
  height: var(--kvs-cvs-image-size);
  padding: 0;
}

.kvs-cvs-swatch--image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: calc(var(--kvs-cvs-radius) - 2px);
}

/* Swatch types: button / select */
.kvs-cvs-swatch--button,
.kvs-cvs-swatch--select,
.kvs-cvs-swatch--auto {
  min-width: var(--kvs-cvs-swatch-size);
  height: var(--kvs-cvs-swatch-size);
  padding: var(--kvs-cvs-btn-padding);
  font-size: 13px;
  font-weight: 500;
}

/* Swatch states */
.kvs-cvs-swatch--selected {
  border-color: var(--kvs-cvs-color-primary);
  box-shadow: 0 0 0 1px var(--kvs-cvs-color-primary);
}

.kvs-cvs-swatch--selected::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 0 2px var(--kvs-cvs-color-primary);
  pointer-events: none;
}

.kvs-cvs-swatch--disabled,
.kvs-cvs-swatch--unavailable {
  opacity: 0.45;
  cursor: not-allowed;
  border-style: dashed;
}

.kvs-cvs-swatch--disabled:hover,
.kvs-cvs-swatch--unavailable:hover {
  transform: none;
  border-color: var(--kvs-cvs-color-border);
}

.kvs-cvs-swatch--hidden {
  display: none;
}

/* Show more button */
.kvs-cvs-swatch--more {
  background: var(--kvs-cvs-color-surface);
  border-style: dashed;
  font-size: 12px;
  font-weight: 600;
  min-width: var(--kvs-cvs-swatch-size);
  height: var(--kvs-cvs-swatch-size);
}

/* --- Catalog specifics --- */
.kvs-cvs-catalog__summary {
  font-size: 12px;
  color: var(--kvs-cvs-color-text-muted);
  margin-bottom: var(--kvs-cvs-gap);
  min-height: 18px;
}

.kvs-cvs-catalog__reset {
  display: inline-block;
  font-size: 12px;
  color: var(--kvs-cvs-color-primary);
  background: none;
  border: none;
  padding: 0;
  margin-bottom: var(--kvs-cvs-gap);
  cursor: pointer;
  text-decoration: underline;
}

.kvs-cvs-catalog__stock-hint,
.kvs-cvs-product__stock-hint {
  font-size: 12px;
  color: var(--kvs-cvs-color-danger);
  margin-bottom: var(--kvs-cvs-gap);
  min-height: 18px;
}

/* --- Quantity --- */
.kvs-cvs-catalog__quantity {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: var(--kvs-cvs-gap);
}

.kvs-cvs-qty-minus,
.kvs-cvs-qty-plus {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--kvs-cvs-color-border);
  background: var(--kvs-cvs-color-surface);
  border-radius: var(--kvs-cvs-radius);
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  color: var(--kvs-cvs-color-text);
  padding: 0;
  line-height: 1;
}

.kvs-cvs-qty-minus:hover,
.kvs-cvs-qty-plus:hover {
  background: var(--kvs-cvs-color-border-hover);
}

.kvs-cvs-qty-input {
  width: 48px;
  height: 28px;
  text-align: center;
  border: 1px solid var(--kvs-cvs-color-border);
  border-radius: var(--kvs-cvs-radius);
  font-size: 13px;
  padding: 0;
  -moz-appearance: textfield;
}

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

/* --- CTA Button --- */
.kvs-cvs-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none !important;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 16px;
  border-radius: var(--kvs-cvs-radius);
  transition: background var(--kvs-cvs-transition), opacity var(--kvs-cvs-transition);
  cursor: pointer;
  border: none;
  width: 100%;
}

.kvs-cvs-cta--choose {
  background: var(--kvs-cvs-color-surface);
  color: var(--kvs-cvs-color-text);
  cursor: default;
  opacity: 0.7;
}

.kvs-cvs-cta--add_to_cart,
.kvs-cvs-cta--preorder {
  background: var(--kvs-cvs-color-primary);
  color: #ffffff;
}

.kvs-cvs-cta--add_to_cart:hover,
.kvs-cvs-cta--preorder:hover {
  background: var(--kvs-cvs-color-primary-hover);
}

.kvs-cvs-cta--unavailable {
  background: var(--kvs-cvs-color-unavailable);
  color: var(--kvs-cvs-color-disabled);
  cursor: not-allowed;
}

.kvs-cvs-cta--adding {
  opacity: 0.7;
  cursor: wait;
}

.kvs-cvs-cta--added {
  background: var(--kvs-cvs-color-success);
  color: #ffffff;
}

.kvs-cvs-cta--view_product {
  background: var(--kvs-cvs-color-surface);
  color: var(--kvs-cvs-color-primary);
  border: 1px solid var(--kvs-cvs-color-primary);
}

.kvs-cvs-cta:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* --- Accessibility: reduced motion --- */
@media (prefers-reduced-motion: reduce) {
  .kvs-cvs-swatch,
  .kvs-cvs-cta {
    transition: none !important;
  }
  .kvs-cvs-swatch:hover:not(:disabled) {
    transform: none;
  }
}

/* --- Responsive --- */
@media (max-width: 480px) {
  .kvs-cvs-swatch--color {
    width: var(--kvs-cvs-swatch-size-sm);
    height: var(--kvs-cvs-swatch-size-sm);
  }
  .kvs-cvs-swatch--image {
    width: var(--kvs-cvs-image-size-sm);
    height: var(--kvs-cvs-image-size-sm);
  }
  .kvs-cvs-swatch--button,
  .kvs-cvs-swatch--select,
  .kvs-cvs-swatch--auto {
    min-width: var(--kvs-cvs-swatch-size-sm);
    height: var(--kvs-cvs-swatch-size-sm);
    padding: 4px 10px;
    font-size: 12px;
  }
  .kvs-cvs-cta {
    padding: 8px 12px;
    font-size: 13px;
  }
}