/* ==========================================================================
   Gallery Pages — Tabs, Filters, Configurator
   ========================================================================== */

/* ---------- Gallery Tabs ---------- */
.gallery-tabs-section {
  position: sticky;
  top: var(--nav-height, 70px);
  z-index: 90;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 0;
}

.gallery-tabs {
  display: flex;
  gap: 0;
  justify-content: center;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.gallery-tab {
  background: none;
  border: none;
  padding: 1.1rem 2rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-light);
  cursor: pointer;
  position: relative;
  transition: color 0.3s ease;
  white-space: nowrap;
}

.gallery-tab::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--color-secondary);
  transition: width 0.3s ease;
}

.gallery-tab:hover { color: var(--color-primary); }
.gallery-tab.active { color: var(--color-primary); }
.gallery-tab.active::after { width: 60%; }

/* ---------- Gallery Panels ---------- */
.gallery-panel {
  display: none;
  padding: 4rem 0;
  animation: fadeInPanel 0.4s ease;
}

.gallery-panel.active { display: block; }

@keyframes fadeInPanel {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Filter Pills ---------- */
.filter-pills {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.filter-pill {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  padding: 0.5rem 1.25rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text-light);
  cursor: pointer;
  transition: all 0.25s ease;
}

.filter-pill:hover {
  border-color: var(--color-secondary);
  color: var(--color-primary);
}

.filter-pill.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* ---------- Gallery Grid ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.gallery-item {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-item:hover img { transform: scale(1.05); }

.gallery-item.hidden {
  display: none;
}

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2.5rem 1rem 0.75rem;
  background: linear-gradient(transparent, rgba(0,0,0,0.55));
  color: #fff;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  pointer-events: none;
}

/* ---------- Configurator ---------- */
.configurator {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.configurator-selectors {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.configurator-group h3 {
  font-family: var(--font-heading, 'Cormorant Garamond', serif);
  font-size: 1.3rem;
  font-weight: 500;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

.configurator-options {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Door Thumbnails */
.config-thumb {
  background: var(--color-bg-alt);
  border: 2px solid var(--color-border);
  border-radius: 10px;
  padding: 0;
  cursor: pointer;
  overflow: hidden;
  width: 110px;
  transition: all 0.3s ease;
  text-align: center;
}

.config-thumb img {
  width: 100%;
  height: 75px;
  object-fit: cover;
  display: block;
}

.config-thumb span {
  display: block;
  padding: 0.4rem 0.25rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--color-text-light);
}

.config-thumb:hover { border-color: var(--color-secondary); }
.config-thumb.active {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 2px rgba(200, 168, 110, 0.25);
}

.config-thumb.active span { color: var(--color-primary); font-weight: 600; }

/* Finish Swatches */
.config-swatch {
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: 10px;
  padding: 0.5rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  width: 70px;
  transition: all 0.3s ease;
}

.swatch-color {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.08);
  display: block;
  transition: transform 0.3s ease;
}

.config-swatch span:last-child {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-text-light);
  letter-spacing: 0.02em;
}

.config-swatch:hover { border-color: var(--color-secondary); }
.config-swatch:hover .swatch-color { transform: scale(1.1); }
.config-swatch.active {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 2px rgba(200, 168, 110, 0.25);
}

/* Preview */
.configurator-preview {
  position: sticky;
  top: calc(var(--nav-height, 70px) + 70px);
}

.preview-image-wrap {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--color-bg-alt);
}

.preview-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.5s ease;
}

.preview-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  mix-blend-mode: multiply;
  transition: background-color 0.5s ease;
}

.preview-summary {
  text-align: center;
  padding: 1.5rem 0;
}

.preview-label {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-secondary);
  margin-bottom: 0.25rem;
}

.preview-summary h3 {
  font-family: var(--font-heading, 'Cormorant Garamond', serif);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 1.25rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .gallery-tabs { justify-content: flex-start; padding: 0 1rem; }
  .gallery-tab { padding: 0.9rem 1.25rem; font-size: 0.78rem; }
  .gallery-grid { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1rem; }
  .configurator { grid-template-columns: 1fr; }
  .configurator-preview { position: static; }
  .config-thumb { width: 90px; }
  .config-thumb img { height: 60px; }
  .config-swatch { width: 60px; }
  .swatch-color { width: 32px; height: 32px; }
}

@media (max-width: 480px) {
  .gallery-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
  .gallery-item { aspect-ratio: 1; }
  .gallery-tab { padding: 0.75rem 1rem; font-size: 0.72rem; }
}