.builder-hero {
  background: linear-gradient(135deg, var(--surface-dark) 0%, var(--surface) 100%);
  color: var(--white);
  padding: 3rem 0 1.5rem;
}

.builder-hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.builder-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 0.5rem;
}

.builder-hero p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 36rem;
}

.builder-progress {
  color: var(--primary);
  font-weight: 600;
  margin-top: 1rem;
  font-size: 0.95rem;
}

.builder-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.1rem;
  border-radius: var(--radius-xl);
  font-weight: 700;
  font-size: 0.95rem;
}

.builder-status-badge.status-ok {
  background: rgba(16, 185, 129, 0.2);
  color: #6ee7b7;
}

.builder-status-badge.status-warning {
  background: rgba(245, 158, 11, 0.2);
  color: #fcd34d;
}

.builder-status-badge.status-error {
  background: rgba(239, 68, 68, 0.2);
  color: #fca5a5;
}

.builder-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2rem;
  align-items: start;
}

.builder-slots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.build-slot {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  background: var(--white);
  text-align: left;
  transition: var(--transition);
  cursor: pointer;
}

.build-slot.empty {
  padding: 2rem 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  min-height: 180px;
  justify-content: center;
}

.build-slot.empty:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: var(--shadow-md);
}

.build-slot.empty i.fa-solid:first-child {
  font-size: 1.75rem;
  color: var(--primary);
}

.build-slot-add {
  font-weight: 600;
  color: var(--primary);
}

.build-slot.filled {
  display: flex;
  gap: 1rem;
  padding: 1rem;
  border-style: solid;
  border-color: var(--border);
}

.build-slot-image {
  width: 88px;
  height: 88px;
  flex-shrink: 0;
  background: var(--bg);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.build-slot-image img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.build-slot-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--primary);
}

.build-slot-body h3 {
  font-size: 0.9rem;
  line-height: 1.35;
  margin: 0.35rem 0;
}

.build-slot-price {
  font-weight: 800;
  color: var(--surface);
  margin-bottom: 0.5rem;
}

.builder-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 1rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.compat-panel,
.builder-summary {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.compat-panel h2 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.compat-checks {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  max-height: 320px;
  overflow-y: auto;
}

.compat-check {
  display: flex;
  gap: 0.6rem;
  font-size: 0.875rem;
  line-height: 1.45;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius-md);
}

.compat-check.severity-error {
  background: rgba(239, 68, 68, 0.08);
  color: #b91c1c;
}

.compat-check.severity-warning {
  background: rgba(245, 158, 11, 0.1);
  color: #b45309;
}

.compat-check.severity-info {
  background: rgba(12, 192, 223, 0.1);
  color: #0e7490;
}

.compat-empty {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.glossary-trigger {
  border: none;
  background: none;
  color: inherit;
  cursor: pointer;
  padding: 0 0.15rem;
  vertical-align: middle;
  opacity: 0.75;
}

.glossary-trigger:hover {
  opacity: 1;
}

.builder-total-label {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.builder-total {
  font-size: 1.75rem;
  font-weight: 800;
  margin: 0.25rem 0 1rem;
  color: var(--surface);
}

.builder-summary .btn {
  margin-bottom: 0.5rem;
}

.builder-attribution {
  font-size: 0.72rem;
  color: var(--text-muted-light);
  line-height: 1.4;
}

.builder-attribution a {
  color: var(--primary);
}

.picker-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 25, 33, 0.55);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 200;
}

.picker-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.picker-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(420px, 100vw);
  height: 100vh;
  background: var(--white);
  z-index: 201;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
}

.picker-drawer.open {
  transform: translateX(0);
}

.picker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.picker-header button {
  border: none;
  background: none;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--text-muted);
}

.picker-header button {
  border: none;
  background: none;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--text-muted);
}

.picker-search-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
}

.picker-search-wrap input {
  flex: 1;
  border: none;
  font: inherit;
  outline: none;
}

.picker-count {
  font-size: 0.75rem;
  white-space: nowrap;
}

.build-slot.optional-slot {
  opacity: 0.85;
}

.build-slot-optional {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-left: 0.35rem;
}

.saved-builds-panel {
  display: none;
  margin-top: 1rem;
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 1rem;
  border: 1px solid var(--border);
}

.saved-builds-panel.open {
  display: block;
}

.saved-build-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border);
}

.saved-build-meta {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.saved-build-actions {
  display: flex;
  gap: 0.35rem;
}

.save-build-modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 25, 33, 0.55);
  opacity: 0;
  visibility: hidden;
  transition: 0.2s;
}

.save-build-modal.open {
  opacity: 1;
  visibility: visible;
}

.save-build-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  width: min(360px, 90vw);
}

.save-build-card input {
  width: 100%;
  padding: 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin: 0.75rem 0 1rem;
  font: inherit;
}

.save-build-actions {
  display: flex;
  gap: 0.5rem;
}

.save-build-actions .btn {
  flex: 1;
}

.picker-list {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem;
}

.picker-item {
  display: flex;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
}

.picker-item:hover {
  background: var(--primary-light);
  border-color: var(--primary);
}

.picker-item img {
  width: 64px;
  height: 64px;
  object-fit: contain;
  background: var(--bg);
  border-radius: var(--radius-sm);
}

.picker-item h4 {
  font-size: 0.85rem;
  line-height: 1.35;
  margin-bottom: 0.25rem;
}

.picker-item p {
  font-weight: 700;
  color: var(--surface);
  font-size: 0.9rem;
}

.compat-tag {
  display: inline-block;
  font-size: 0.65rem;
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  margin-top: 0.25rem;
}

@media (max-width: 960px) {
  .builder-layout {
    grid-template-columns: 1fr;
  }

  .builder-sidebar {
    position: static;
  }
}