* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  body {
    font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Yu Gothic", sans-serif;
    background: #0f172a;
    color: #e2e8f0;
    line-height: 1.5;
  }
  
  header {
    padding: 24px 32px;
    background: #1e293b;
    border-bottom: 1px solid #334155;
  }
  
  header h1 {
    font-size: 24px;
    margin-bottom: 16px;
  }
  
  nav {
    display: flex;
    gap: 8px;
  }
  
  .filter-btn {
    background: #334155;
    color: #e2e8f0;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
  }
  
  .filter-btn:hover {
    background: #475569;
  }
  
  .filter-btn.active {
    background: #3b82f6;
  }
  
  main {
    padding: 24px 32px;
  }
  
  .status {
    padding: 16px;
    color: #94a3b8;
    text-align: center;
  }
  
  .batches {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 16px;
  }
  
  .batch-card {
    background: #1e293b;
    border-radius: 8px;
    padding: 16px;
    border: 1px solid #334155;
    cursor: pointer;
    transition: border-color 0.15s;
  }
  
  .batch-card:hover {
    border-color: #3b82f6;
  }
  
  .batch-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
  }
  
  .batch-card-title {
    font-size: 14px;
    font-weight: 600;
    word-break: break-all;
  }
  
  .batch-card-engine {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 4px;
    background: #475569;
    color: #cbd5e1;
    white-space: nowrap;
    margin-left: 8px;
  }
  
  .batch-card-meta {
    font-size: 12px;
    color: #94a3b8;
    margin-bottom: 12px;
  }
  
  .batch-card-samples {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
    aspect-ratio: 4 / 1;
  }
  
  .batch-card-samples img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 4px;
    background: #0f172a;
  }