/* ============================================
   BASE STYLES - Theme-agnostic layout & structure
   ============================================ */

/* Reset & Base */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-base, 16px);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family, system-ui, -apple-system, sans-serif);
  background-color: var(--color-bg, #ffffff);
  color: var(--color-text, #1a1a1a);
  line-height: 1.6;
  min-height: 100vh;
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--color-primary, #2563eb);
  outline-offset: 2px;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-text, #1a1a1a);
  color: var(--color-bg, #ffffff);
  padding: 8px 16px;
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}

/* ============================================
   LAYOUT
   ============================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md, 1rem);
}

/* Header */
.site-header {
  padding: var(--spacing-lg, 2rem) 0;
  border-bottom: 1px solid var(--color-border, #e5e7eb);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md, 1rem);
}

.header-text {
  text-align: left;
  flex: 1;
}

.site-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text, #1a1a1a);
}

.site-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary, #6b7280);
}

/* ============================================
   LANGUAGE SWITCHER
   ============================================ */

.language-switcher {
  position: relative;
}

.language-switcher-button {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--color-card-bg, #ffffff);
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius, 8px);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text, #1a1a1a);
  transition:
    background 0.2s ease,
    border-color 0.2s ease;
}

.language-switcher-button:hover {
  background: var(--color-neutral, #f3f4f6);
  border-color: var(--color-text-secondary, #6b7280);
}

.language-switcher-button:focus-visible {
  outline: 2px solid var(--color-primary, #2563eb);
  outline-offset: 2px;
}

.language-switcher-button[aria-expanded="true"] {
  background: var(--color-neutral, #f3f4f6);
  border-color: var(--color-primary, #2563eb);
}

.language-flag {
  font-size: 1.25rem;
  line-height: 1;
}

.language-code {
  font-weight: 600;
  text-transform: uppercase;
}

.language-arrow {
  font-size: 0.625rem;
  margin-left: 0.25rem;
  transition: transform 0.2s ease;
}

.language-switcher-button[aria-expanded="true"] .language-arrow {
  transform: rotate(180deg);
}

.language-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  min-width: 160px;
  background: var(--color-card-bg, #ffffff);
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius, 8px);
  box-shadow: var(--shadow-md, 0 4px 6px rgba(0, 0, 0, 0.1));
  list-style: none;
  padding: 0.5rem 0;
  z-index: 100;
}

.language-dropdown[hidden] {
  display: none;
}

.language-dropdown li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  cursor: pointer;
  font-size: 0.875rem;
  transition: background 0.2s ease;
}

.language-dropdown li:hover,
.language-dropdown li:focus {
  background: var(--color-neutral, #f3f4f6);
  outline: none;
}

.language-dropdown li[aria-selected="true"] {
  background: var(--color-primary, #2563eb);
  color: white;
}

.language-dropdown li[aria-selected="true"]:hover {
  background: var(--color-primary-hover, #1d4ed8);
}

/* Main content */
main {
  padding: var(--spacing-lg, 2rem) 0;
  min-height: calc(100vh - 200px);
}

/* Footer */
.site-footer {
  padding: var(--spacing-md, 1rem) 0;
  text-align: center;
  border-top: 1px solid var(--color-border, #e5e7eb);
  color: var(--color-text-secondary, #6b7280);
  font-size: 0.875rem;
}

/* ============================================
   PAN GRID (Landing Page)
   ============================================ */

.pan-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg, 2rem);
  padding: var(--spacing-md, 1rem) 0;
}

.pan-card {
  background: var(--color-card-bg, #ffffff);
  border-radius: var(--radius, 8px);
  overflow: hidden;
  box-shadow: var(--shadow-sm, 0 1px 2px rgba(0, 0, 0, 0.05));
  cursor: pointer;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
  border: 1px solid var(--color-border, #e5e7eb);
}

.pan-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md, 0 4px 6px rgba(0, 0, 0, 0.1));
}

.pan-card:focus-visible {
  outline: 2px solid var(--color-primary, #2563eb);
  outline-offset: 2px;
}

.pan-card-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
}

.pan-card-image-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--color-neutral, #f3f4f6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary, #6b7280);
  font-size: 1.25rem;
  font-weight: 500;
}

.pan-card-name {
  padding: var(--spacing-md, 1rem);
  font-size: 1.25rem;
  font-weight: 600;
  text-align: center;
}

/* ============================================
   PAN DETAIL PAGE
   ============================================ */

.pan-detail-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md, 1rem);
  margin-bottom: var(--spacing-lg, 2rem);
}

.back-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--color-neutral, #f3f4f6);
  border: none;
  border-radius: var(--radius, 8px);
  cursor: pointer;
  font-size: 1rem;
  color: var(--color-text, #1a1a1a);
  transition: background 0.2s ease;
}

.back-button:hover {
  background: var(--color-border, #e5e7eb);
}

.pan-detail-image {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius, 8px);
  margin-bottom: var(--spacing-md, 1rem);
}

.pan-detail-name {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg, 2rem);
}

/* Ingredient Sections */
.ingredient-section {
  margin-bottom: var(--spacing-lg, 2rem);
}

.ingredient-section-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md, 1rem);
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-border, #e5e7eb);
}

.ingredient-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-md, 1rem);
}

.ingredient-card {
  padding: var(--spacing-md, 1rem);
  border-radius: var(--radius, 8px);
  cursor: pointer;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
  text-align: center;
  font-weight: 500;
  border: 1px solid transparent;
}

.ingredient-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm, 0 1px 2px rgba(0, 0, 0, 0.05));
}

.ingredient-card:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 2px;
}

/* Category-specific styles (colors in theme) */
.ingredient-card.unadapted {
  background-color: var(--color-unadapted, #fee2e2);
  color: var(--color-unadapted-text, #991b1b);
}

.ingredient-card.recommended {
  background-color: var(--color-recommended, #dcfce7);
  color: var(--color-recommended-text, #166534);
}

.ingredient-card.neutral {
  background-color: var(--color-neutral, #f3f4f6);
  color: var(--color-neutral-text, #374151);
}

/* ============================================
   MODAL
   ============================================ */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md, 1rem);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.2s ease,
    visibility 0.2s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-card-bg, #ffffff);
  border-radius: var(--radius, 8px);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  transform: scale(0.95);
  transition: transform 0.2s ease;
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md, 1rem) var(--spacing-lg, 2rem);
  border-bottom: 1px solid var(--color-border, #e5e7eb);
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.25rem;
  color: var(--color-text-secondary, #6b7280);
  line-height: 1;
  border-radius: var(--radius, 8px);
  transition: background 0.2s ease;
}

.modal-close:hover {
  background: var(--color-neutral, #f3f4f6);
}

.modal-body {
  padding: var(--spacing-lg, 2rem);
}

.modal-section {
  margin-bottom: var(--spacing-md, 1rem);
}

.modal-section:last-child {
  margin-bottom: 0;
}

.modal-section-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-secondary, #6b7280);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.modal-section-content {
  font-size: 1.125rem;
  line-height: 1.6;
}

/* Category icons in modal */
.modal-icon {
  font-size: 1.5rem;
}

.modal-icon.unadapted {
  color: var(--color-unadapted-text, #991b1b);
}

.modal-icon.recommended {
  color: var(--color-recommended-text, #166534);
}

.modal-icon.neutral {
  color: var(--color-neutral-text, #374151);
}

/* Category icons in section titles */
.section-icon {
  font-size: 1.25rem;
}

.section-icon.unadapted {
  color: var(--color-unadapted-text, #991b1b);
}

.section-icon.recommended {
  color: var(--color-recommended-text, #166534);
}

.section-icon.neutral {
  color: var(--color-neutral-text, #374151);
}

/* ============================================
   ERROR STATES
   ============================================ */

.error-container {
  text-align: center;
  padding: var(--spacing-lg, 2rem);
}

.error-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md, 1rem);
  color: var(--color-unadapted-text, #991b1b);
}

.error-message {
  margin-bottom: var(--spacing-md, 1rem);
  color: var(--color-text-secondary, #6b7280);
}

.retry-button {
  padding: 0.75rem 1.5rem;
  background: var(--color-primary, #2563eb);
  color: white;
  border: none;
  border-radius: var(--radius, 8px);
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s ease;
}

.retry-button:hover {
  background: var(--color-primary-hover, #1d4ed8);
}

/* Loading state */
.loading {
  text-align: center;
  padding: var(--spacing-lg, 2rem);
  color: var(--color-text-secondary, #6b7280);
}

/* Hidden utility */
.hidden {
  display: none !important;
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm, 0.5rem);
  }

  .language-switcher {
    align-self: flex-end;
  }

  .site-title {
    font-size: 2rem;
  }

  .pan-grid {
    grid-template-columns: 1fr;
  }

  .ingredient-grid {
    grid-template-columns: 1fr;
  }

  .modal {
    max-height: 95vh;
  }

  .modal-header,
  .modal-body {
    padding: var(--spacing-md, 1rem);
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .pan-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1025px) {
  .pan-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}