/* ==========================================================================
   KELCO Product Selector - Theme-Adaptive Frontend CSS
   All styles scoped under .kps-container to avoid theme conflicts.
   Uses CSS custom properties that inherit from WordPress theme.json.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties (Theme Integration)
   -------------------------------------------------------------------------- */
.kps-container {
  --kps-bg: var(--wp--preset--color--base, #ffffff);
  --kps-text: var(--wp--preset--color--contrast, #1a1a1a);
  --kps-primary: var(--wp--preset--color--primary, #0073aa);
  --kps-primary-hover: var(--wp--preset--color--primary, #005d8c);
  --kps-surface: color-mix(in srgb, var(--kps-text) 5%, var(--kps-bg));
  --kps-border: color-mix(in srgb, var(--kps-text) 15%, var(--kps-bg));
  --kps-muted: color-mix(in srgb, var(--kps-text) 60%, var(--kps-bg));
  --kps-font: var(--wp--preset--font-family--body, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif);
  --kps-radius: 8px;
  --kps-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  --kps-amber: #92400e;
  --kps-amber-bg: #fffbeb;
  --kps-amber-border: #f59e0b;
  --kps-red: #dc2626;
  --kps-red-bg: #fef2f2;
  --kps-red-border: #fca5a5;
}

/* --------------------------------------------------------------------------
   2. Container
   -------------------------------------------------------------------------- */
.kps-container {
  font-family: var(--kps-font);
  color: var(--kps-text);
  background: var(--kps-bg);
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px;
  line-height: 1.5;
  box-sizing: border-box;
}

.kps-container *,
.kps-container *::before,
.kps-container *::after {
  box-sizing: border-box;
}

/* --------------------------------------------------------------------------
   3. Loading State
   -------------------------------------------------------------------------- */
.kps-container .kps-loading {
  text-align: center;
  color: var(--kps-muted);
  padding: 48px 16px;
  font-size: 1rem;
  animation: kps-pulse 2s ease-in-out infinite;
}

@keyframes kps-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* --------------------------------------------------------------------------
   4. Error State
   -------------------------------------------------------------------------- */
.kps-container .kps-error {
  background: var(--kps-red-bg);
  border: 1px solid var(--kps-red-border);
  border-left: 4px solid var(--kps-red);
  color: var(--kps-red);
  padding: 16px 20px;
  border-radius: var(--kps-radius);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   5. Selection Path
   -------------------------------------------------------------------------- */
.kps-container .kps-selection-path {
  margin-bottom: 24px;
  padding: 0;
}

.kps-container .kps-selection-path-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--kps-muted);
  margin: 0 0 8px 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kps-container .kps-selection-path-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.kps-container .kps-selection-path-step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-left: 2px solid var(--kps-border);
  padding-left: 16px;
  margin-left: 8px;
  position: relative;
}

.kps-container .kps-selection-path-step::before {
  content: attr(data-step);
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--kps-primary);
  color: var(--kps-bg);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  left: -13px;
  top: 10px;
}

.kps-container .kps-selection-path-content {
  flex: 1;
  min-width: 0;
  padding-left: 20px;
}

.kps-container .kps-selection-path-question {
  display: block;
  font-size: 0.85rem;
  color: var(--kps-muted);
  margin-bottom: 2px;
}

.kps-container .kps-selection-path-answer {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--kps-text);
}

.kps-container .kps-selection-path-edit {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--kps-primary);
  font-size: 0.8rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  font-family: var(--kps-font);
  transition: background 0.15s ease;
  align-self: center;
}

.kps-container .kps-selection-path-edit:hover {
  background: var(--kps-surface);
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   6. Question Card
   -------------------------------------------------------------------------- */
.kps-container .kps-question-card {
  background: var(--kps-surface);
  border: 1px solid var(--kps-border);
  border-radius: var(--kps-radius);
  box-shadow: var(--kps-shadow);
  padding: 24px;
  margin-bottom: 24px;
}

.kps-container .kps-question-text {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--kps-text);
  margin: 0 0 4px 0;
  line-height: 1.3;
}

.kps-container .kps-question-detail {
  font-size: 0.9rem;
  color: var(--kps-muted);
  margin: 0 0 20px 0;
  line-height: 1.5;
}

.kps-container .kps-question-select {
  display: block;
  width: 100%;
  height: 44px;
  padding: 0 36px 0 12px;
  font-size: 1rem;
  font-family: var(--kps-font);
  color: var(--kps-text);
  background-color: var(--kps-bg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23666' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 12px 8px;
  border: 1px solid var(--kps-border);
  border-radius: calc(var(--kps-radius) - 2px);
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  transition: border-color 0.15s ease;
  margin-bottom: 16px;
}

.kps-container .kps-question-select:hover {
  border-color: var(--kps-primary);
}

.kps-container .kps-question-select:focus {
  outline: 2px solid var(--kps-primary);
  outline-offset: 2px;
  border-color: var(--kps-primary);
}

.kps-container .kps-next-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 32px;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--kps-font);
  color: var(--kps-bg);
  background: var(--kps-primary);
  border: none;
  border-radius: calc(var(--kps-radius) - 2px);
  cursor: pointer;
  transition: background 0.15s ease, opacity 0.15s ease;
  width: 100%;
}

.kps-container .kps-next-btn:hover {
  background: var(--kps-primary-hover);
  filter: brightness(0.9);
}

.kps-container .kps-next-btn:focus-visible {
  outline: 2px solid var(--kps-primary);
  outline-offset: 2px;
}

.kps-container .kps-next-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  filter: none;
}

/* --------------------------------------------------------------------------
   7. Recommendation Card
   -------------------------------------------------------------------------- */
.kps-container .kps-recommendation-card {
  background: var(--kps-bg);
  border: 1px solid var(--kps-border);
  border-radius: var(--kps-radius);
  box-shadow: var(--kps-shadow);
  padding: 0;
  margin-bottom: 24px;
  overflow: hidden;
}

.kps-container .kps-recommendation-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--kps-border);
}

.kps-container .kps-recommendation-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--kps-text);
  margin: 0;
}

.kps-container .kps-recommendation-text {
  padding: 16px 24px;
  font-size: 0.95rem;
  color: var(--kps-text);
  line-height: 1.6;
}

.kps-container .kps-recommendation-text:empty {
  display: none;
}

.kps-container .kps-recommendation-series {
  padding: 0 24px 16px;
  margin: 0;
  list-style: disc;
  list-style-position: inside;
}

.kps-container .kps-recommendation-series li {
  padding: 4px 0;
  font-size: 0.95rem;
  color: var(--kps-text);
}

.kps-container .kps-recommendation-body {
  padding: 0 24px 24px;
}

.kps-container .kps-no-products {
  padding: 24px;
  text-align: center;
  color: var(--kps-muted);
  font-size: 0.95rem;
  font-style: italic;
}

/* --------------------------------------------------------------------------
   8. Product Grid
   -------------------------------------------------------------------------- */
.kps-container .kps-product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

/* --------------------------------------------------------------------------
   9. Product Card
   -------------------------------------------------------------------------- */
.kps-container .kps-product-card {
  background: var(--kps-surface);
  border: 1px solid var(--kps-border);
  border-radius: var(--kps-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.15s ease;
}

.kps-container .kps-product-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.kps-container .kps-product-image-wrap {
  position: relative;
  overflow: hidden;
}

.kps-container .kps-product-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  background: var(--kps-surface);
  border-bottom: 1px solid var(--kps-border);
  display: block;
}

.kps-container .kps-product-image-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--kps-surface);
  border-bottom: 1px solid var(--kps-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--kps-muted);
  font-size: 0.85rem;
}

.kps-container .kps-product-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.kps-container .kps-product-item-no {
  font-weight: 700;
  color: var(--kps-primary);
  font-size: 1rem;
  margin-bottom: 4px;
}

.kps-container .kps-product-description {
  font-size: 0.9rem;
  color: var(--kps-text);
  margin-bottom: 8px;
  line-height: 1.5;
}

.kps-container .kps-product-group {
  font-size: 0.8rem;
  color: var(--kps-muted);
  margin-bottom: 10px;
}

.kps-container .kps-product-variants {
  font-size: 0.8rem;
  color: var(--kps-muted);
  margin-bottom: 10px;
  line-height: 1.5;
  font-style: italic;
}

.kps-container .kps-product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.kps-container .kps-product-tag {
  display: inline-block;
  background: var(--kps-surface);
  border: 1px solid var(--kps-border);
  color: var(--kps-text);
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 100px;
  white-space: nowrap;
}

.kps-container .kps-product-tag-more {
  background: transparent;
  border-style: dashed;
  color: var(--kps-muted);
}

.kps-container .kps-product-specific-notes {
  font-size: 0.8rem;
  color: var(--kps-amber);
  margin-bottom: 12px;
  line-height: 1.4;
}

.kps-container .kps-product-specific-notes ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.kps-container .kps-product-specific-notes li {
  padding: 2px 0;
}

.kps-container .kps-product-specific-notes li::before {
  content: "\26A0\FE0F ";
  margin-right: 4px;
}

.kps-container .kps-product-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 20px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--kps-font);
  color: var(--kps-primary);
  background: transparent;
  border: 2px solid var(--kps-primary);
  border-radius: calc(var(--kps-radius) - 2px);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
  margin-top: auto;
  text-align: center;
}

.kps-container .kps-product-link:hover {
  background: var(--kps-primary);
  color: var(--kps-bg);
}

.kps-container .kps-product-link:focus-visible {
  outline: 2px solid var(--kps-primary);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   10. Notes Section
   -------------------------------------------------------------------------- */
.kps-container .kps-notes {
  background: var(--kps-amber-bg);
  border: 1px solid var(--kps-amber-border);
  border-left: 4px solid var(--kps-amber-border);
  border-radius: 0 var(--kps-radius) var(--kps-radius) 0;
  padding: 16px 20px;
  margin: 16px 24px 24px;
  font-size: 0.9rem;
  color: var(--kps-amber);
  line-height: 1.5;
}

.kps-container .kps-notes-title {
  font-weight: 700;
  margin: 0 0 8px 0;
  font-size: 0.95rem;
}

.kps-container .kps-notes ul,
.kps-container .kps-notes ol,
.kps-container .kps-notes-list {
  margin: 0;
  padding-left: 20px;
  list-style: disc;
}

.kps-container .kps-notes li {
  padding: 4px 0;
}

/* --------------------------------------------------------------------------
   11. Refinement Buttons
   -------------------------------------------------------------------------- */
.kps-container .kps-refinement-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 16px 24px 24px;
}

.kps-container .kps-refinement-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.kps-container .kps-refinement-options-title {
  width: 100%;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--kps-text);
  margin: 0 0 4px 0;
}

.kps-container .kps-refinement-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 20px;
  font-size: 0.9rem;
  font-weight: 500;
  font-family: var(--kps-font);
  color: var(--kps-primary);
  background: var(--kps-bg);
  border: 1px solid var(--kps-primary);
  border-radius: calc(var(--kps-radius) - 2px);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.kps-container .kps-refinement-btn:hover {
  background: var(--kps-primary);
  color: var(--kps-bg);
}

.kps-container .kps-refinement-btn:focus-visible {
  outline: 2px solid var(--kps-primary);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   12. Restart Button
   -------------------------------------------------------------------------- */
.kps-container .kps-restart-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--kps-font);
  color: var(--kps-red);
  background: transparent;
  border: 1px solid var(--kps-red);
  border-radius: calc(var(--kps-radius) - 2px);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
  margin: 24px auto 0;
}

.kps-container .kps-restart-btn:hover {
  background: var(--kps-red);
  color: #ffffff;
}

.kps-container .kps-restart-btn:focus-visible {
  outline: 2px solid var(--kps-red);
  outline-offset: 2px;
}

.kps-container .kps-actions {
  text-align: center;
  margin-top: 16px;
}

/* --------------------------------------------------------------------------
   13. Responsive Breakpoints
   -------------------------------------------------------------------------- */

/* Tablet (768px+) */
@media (min-width: 768px) {
  .kps-container {
    padding: 24px;
  }

  .kps-container .kps-question-card {
    padding: 32px;
  }

  .kps-container .kps-next-btn {
    width: auto;
  }

  .kps-container .kps-product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
  .kps-container .kps-product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* --------------------------------------------------------------------------
   14. Accessibility - Focus Styles
   -------------------------------------------------------------------------- */
.kps-container a:focus-visible,
.kps-container button:focus-visible,
.kps-container select:focus-visible,
.kps-container input:focus-visible {
  outline: 2px solid var(--kps-primary);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   15. Accessibility - Reduced Motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .kps-container .kps-loading {
    animation: none;
  }

  .kps-container *,
  .kps-container *::before,
  .kps-container *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* --------------------------------------------------------------------------
   16. Print Styles
   -------------------------------------------------------------------------- */
@media print {
  .kps-container {
    box-shadow: none;
    padding: 0;
  }

  .kps-container .kps-restart-btn,
  .kps-container .kps-refinement-btn,
  .kps-container .kps-selection-path-edit,
  .kps-container .kps-next-btn {
    display: none;
  }

  .kps-container .kps-product-card {
    break-inside: avoid;
  }
}