.mb-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 10px;
}

.mb-filters {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.mb-chip {
  padding: 5px 12px;
  border-radius: 99px;
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--text2);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  font-family: 'DM Sans', sans-serif;
}

.mb-chip:hover { border-color: var(--accent); color: var(--accent); }
.mb-chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.mb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

@media (max-width: 600px) {
  .mb-grid { grid-template-columns: repeat(1, 1fr); gap: 12px; }
}

.mb-item {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 3/4;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
  background: var(--surface2);
}

.mb-item:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(0,0,0,0.15); }

.mb-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.mb-item-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.65));
  padding: 24px 10px 10px;
  opacity: 0;
  transition: opacity 0.2s;
}

.mb-item:hover .mb-item-overlay { opacity: 1; }

.mb-item-caption {
  color: #fff;
  font-size: 0.78rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mb-item-cat {
  position: absolute;
  top: 8px;
  left: 8px;
  background: rgba(0,0,0,0.5);
  color: #fff;
  font-size: 0.66rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 99px;
}

.mb-source-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
}

.mb-src-tab {
  flex: 1;
  padding: 9px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: var(--surface2);
  color: var(--text2);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  font-family: 'DM Sans', sans-serif;
  transition: all 0.15s;
}

.mb-src-tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.mb-upload-area {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--surface2);
}

.mb-upload-area:hover { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 5%, var(--surface2)); }

.mb-upload-icon { font-size: 1.8rem; display: block; margin-bottom: 6px; }
.mb-upload-hint { font-size: 0.70rem; color: var(--text2); display: block; margin-top: 4px; }

#mb-preview { width: 100%; max-height: 180px; object-fit: contain; border-radius: 8px; }

.mb-empty {
  text-align: center;
  padding: 60px 16px;
  color: var(--text2);
}

.mb-empty-icon { font-size: 3rem; margin-bottom: 12px; }

/* Lightbox */
.mb-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  z-index: 500;
  padding: 16px;
}

.mb-lightbox:not(.hidden) {
  display: flex;
  align-items: center;
  justify-content: center;
}

.lb-content {
  position: relative;
  max-width: 800px;
  width: 100%;
  text-align: center;
}

.lb-content img {
  max-height: 70vh;
  max-width: 100%;
  border-radius: 10px;
  object-fit: contain;
}

.lb-caption {
  color: #fff;
  font-size: 0.9rem;
  margin-top: 10px;
  font-weight: 500;
}

.lb-cat {
  color: rgba(255,255,255,0.6);
  font-size: 0.75rem;
  margin-top: 4px;
}

.lb-delete {
  margin-top: 12px;
}

.lb-close {
  position: fixed;
  top: 16px;
  right: 20px;
  background: rgba(255,255,255,0.15);
  border: none;
  color: #fff;
  font-size: 1.2rem;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lb-prev, .lb-next {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.15);
  border: none;
  color: #fff;
  font-size: 1.8rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lb-prev { left: 12px; }
.lb-next { right: 12px; }