/* ===== New step-based layout ===== */
.configurator {
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - 60px);
  width: 100%;
  overflow: visible;
}

.loading {
  padding: 3rem;
  text-align: center;
  color: var(--text-muted);
}

.previewSection {
  padding: 0.5rem 1rem;
}

.stepContent {
  padding: 1.25rem 1.5rem 3rem;
}

/* ===== Desktop split: 3D (2/3) + options (1/3) ===== */
.splitLayout {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

@media (min-width: 1000px) {
  .splitLayout {
    flex-direction: row;
    align-items: stretch;
    gap: 1.5rem;
    padding: 0.75rem 1.25rem 2.25rem;
    min-height: 0;
  }

  .previewSection {
    flex: 2;
    padding: 0;
    min-width: 0; /* allow canvas to shrink without overflow */
    position: sticky;
    top: 58px;
    align-self: flex-start;
    z-index: 10;
  }

  .stepContent {
    flex: 1;
    /* Extra right padding so scrollbars don't cover slider thumbs/cursors */
    padding: 0.75rem 1.4rem 0.25rem 0.9rem;
    min-width: 0;
  }
}

/* ===== Material Picker Modal (kept from original) ===== */
.matPickerOverlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.matPickerModal {
  background: #fff;
  border-radius: 12px;
  width: 95vw;
  max-width: 1400px;
  height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

.matPickerHeader {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.matPickerHeader h2 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
  white-space: nowrap;
}

.matPickerSearch {
  flex: 1;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  max-width: 350px;
}
.matPickerSearch:focus {
  outline: none;
  border-color: var(--action);
  box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.1);
}

.matPickerClose {
  background: none;
  border: none;
  font-size: 1.75rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0 0.5rem;
  line-height: 1;
  margin-left: auto;
}
.matPickerClose:hover { color: var(--text); }

.matPickerTabs {
  display: flex;
  gap: 0;
  padding: 0 1.5rem;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  flex-shrink: 0;
}

.matPickerTab {
  padding: 0.6rem 1rem;
  border: none;
  background: none;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: all 0.15s;
}
.matPickerTab:hover { color: var(--action); }
.matPickerTabActive {
  color: var(--action);
  border-bottom-color: var(--action);
}

.matPickerContent {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem 1.5rem;
}

.matPickerGroup { margin-bottom: 1.5rem; }
.matPickerGroupTitle {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin: 0 0 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border);
}

.matPickerGrid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 0.75rem;
}

.matPickerCard {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.35rem;
  border: 2px solid var(--border);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  transition: all 0.15s;
}
.matPickerCard:hover {
  border-color: var(--action);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}
.matPickerCardSelected {
  border-color: var(--action);
  background: color-mix(in srgb, var(--action) 8%, #fff);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.matPickerCardImg {
  width: 70px; height: 70px;
  object-fit: cover;
  border-radius: 6px;
}
.matPickerCardNoImg {
  width: 70px; height: 70px;
  background: var(--border);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  font-size: 0.75rem;
}
.matPickerCardLabel {
  font-size: 0.7rem;
  text-align: center;
  color: var(--text);
  line-height: 1.2;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.matPickerCheck {
  position: absolute;
  top: 4px; right: 4px;
  width: 1.2rem; height: 1.2rem;
  background: var(--action);
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem; font-weight: 700;
}
.matPickerEmpty {
  text-align: center;
  padding: 3rem;
  color: var(--text-muted);
}

@media (max-width: 700px) {
  .stepContent { padding: 1rem; }
}