.nn-lab { --lab-panel: color-mix(in srgb, var(--article-card) 88%, var(--article-accent) 12%); }
.nn-lab .intro-grid,
.nn-lab .controls,
.nn-lab .playground-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0;
}
.nn-lab .intro-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.nn-lab .mini-card,
.nn-lab .prediction,
.nn-lab .stat-item {
  background: var(--article-code-bg);
  border: 1px solid var(--article-border);
  border-radius: 14px;
  padding: 14px;
}
.nn-lab .mini-card strong,
.nn-lab .mini-card span { display: block; }
.nn-lab .mini-card span,
.nn-lab label,
.nn-lab .prediction span,
.nn-lab .stat-item dt { color: var(--article-sub); }
.nn-lab .lab-card {
  background: var(--article-card);
  border: 1px solid var(--article-border);
  border-radius: 16px;
  padding: 20px;
  margin: 18px 0;
  box-shadow: 0 2px 10px rgba(0,0,0,.05);
}
.nn-lab .section-head,
.nn-lab .button-row { display: flex; gap: 12px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.nn-lab .button-row { justify-content: flex-start; margin: 18px 0; }
.nn-lab button {
  border: 0;
  border-radius: 999px;
  padding: 10px 16px;
  background: linear-gradient(90deg, var(--article-accent), var(--article-accent-2));
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}
.nn-lab button:hover { filter: brightness(1.08); }
.nn-lab .ghost-button { background: transparent; color: var(--article-accent); border: 1px solid var(--article-border); }
.nn-lab .file-button { display: inline-flex; align-items: center; border-radius: 999px; padding: 9px 14px; font-weight: 700; cursor: pointer; }
.nn-lab .file-button input { display: none; }
.nn-lab label { display: grid; gap: 6px; font-size: .92rem; }
.nn-lab input[type="range"] { width: 100%; accent-color: var(--article-accent); }
.nn-lab output { color: var(--article-text); font-weight: 700; }
.nn-lab canvas {
  display: block;
  width: 100%;
  background: #090d1a;
  border: 1px solid var(--article-border);
  border-radius: 16px;
}
.nn-lab .split { display: grid; grid-template-columns: minmax(0, .95fr) minmax(280px, 1fr); gap: 20px; align-items: center; }
.nn-lab .stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 0; }
.nn-lab .stat-item dd,
.nn-lab .prediction strong { display: block; margin: 4px 0 0; font-size: 1.35rem; }
.nn-lab .prediction strong { color: var(--article-accent); }
.nn-lab .note { font-size: .9rem; color: var(--article-sub); }
.nn-lab .conversation-card,
.nn-lab .visual-word-card { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr); gap: 18px; }
.nn-lab .chat-log {
  height: 280px;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: #090d1a;
  border: 1px solid var(--article-border);
  border-radius: 16px;
  padding: 14px;
}
.nn-lab .chat-message {
  max-width: 84%;
  padding: 10px 12px;
  border-radius: 14px;
  line-height: 1.7;
  white-space: pre-wrap;
}
.nn-lab .chat-message.user { align-self: flex-end; background: var(--article-accent); color: #fff; border-bottom-right-radius: 4px; }
.nn-lab .chat-message.bot { align-self: flex-start; background: var(--article-code-bg); border: 1px solid var(--article-border); border-bottom-left-radius: 4px; }
.nn-lab .teach-form { display: grid; gap: 12px; margin: 14px 0; }
.nn-lab .chat-form { display: grid; grid-template-columns: 1fr auto; gap: 10px; margin-top: 12px; }
.nn-lab .chat-form input,
.nn-lab .teach-form input:not([type="file"]),
.nn-lab .teach-form textarea {
  min-width: 0;
  border: 1px solid var(--article-border);
  border-radius: 16px;
  background: var(--article-code-bg);
  color: var(--article-text);
  padding: 10px 14px;
  font: inherit;
}
.nn-lab .chat-form input { border-radius: 999px; }
.nn-lab .teach-form textarea { resize: vertical; }
.nn-lab .memory-panel {
  background: var(--article-code-bg);
  border: 1px solid var(--article-border);
  border-radius: 16px;
  padding: 16px;
}
.nn-lab .memory-panel h3 { margin: 0; color: var(--article-text); }
.nn-lab .memory-panel h3 span { color: var(--article-sub); font-size: .9rem; font-weight: 500; }
.nn-lab .button-row.compact { margin: 0; gap: 8px; }
.nn-lab .button-row.compact button { padding: 7px 10px; font-size: .85rem; }
.nn-lab .memory-list { margin: 14px 0 0; padding-left: 18px; color: var(--article-sub); font-size: .9rem; }
.nn-lab .memory-list li { margin-bottom: 8px; word-break: break-word; }
.nn-lab .dataset-import,
.nn-lab .reverse-generate {
  margin-top: 16px;
  border-top: 1px solid var(--article-border);
  padding-top: 14px;
}
.nn-lab .dataset-import h3,
.nn-lab .reverse-generate h3 { margin: 0 0 10px; color: var(--article-text); }
.nn-lab #generatedImageCanvas {
  margin-top: 12px;
  width: 160px;
  height: 160px;
  image-rendering: pixelated;
}
.nn-lab .visual-result {
  margin-top: 14px;
  background: #090d1a;
  border: 1px solid var(--article-border);
  border-radius: 16px;
  padding: 14px;
  color: var(--article-text);
  min-height: 56px;
}
.nn-lab input[type="file"] {
  width: 100%;
  border: 1px dashed var(--article-border);
  border-radius: 14px;
  padding: 10px;
  background: var(--article-code-bg);
  color: var(--article-sub);
}
.nn-lab .preview-grid { display: grid; grid-template-columns: 160px 1fr; gap: 12px; align-items: end; margin-top: 14px; }
.nn-lab .preview-grid h4 { margin: 0 0 8px; color: var(--article-sub); font-size: .9rem; }
.nn-lab #foregroundMaskCanvas,
.nn-lab #visualVectorCanvas { height: auto; }
.nn-lab #foregroundMaskCanvas { image-rendering: pixelated; }
@media (max-width: 860px) {
  .nn-lab .intro-grid,
  .nn-lab .controls,
  .nn-lab .playground-grid,
  .nn-lab .split,
  .nn-lab .stats,
  .nn-lab .conversation-card,
  .nn-lab .visual-word-card,
  .nn-lab .chat-form { grid-template-columns: 1fr; }
  .nn-lab .preview-grid { grid-template-columns: 1fr; }
  .nn-lab .chat-message { max-width: 94%; }
}