/* 辅助 AI 工具 — download-center / ai-studio 共用样式 */
.dc-tools-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: clamp(14px, 2vw, 22px);
  width: 100%;
  min-height: 420px;
}
.dc-tools-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.dc-tools-tab {
  text-align: left;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--at-border, var(--border, rgba(212, 168, 83, 0.22)));
  background: var(--at-card-bg, var(--bg-surface, rgba(14, 14, 18, 0.72)));
  color: var(--at-text2, var(--text2, rgba(242, 240, 235, 0.58)));
  cursor: pointer;
  font-size: 0.78rem;
  transition: border-color 0.2s, color 0.2s;
}
.dc-tools-tab.active,
.dc-tools-tab:hover {
  border-color: var(--at-border-hover, var(--accent, #d4a853));
  color: var(--at-accent, var(--accent, #d4a853));
}
.dc-tools-tab.active { background: rgba(212, 168, 83, 0.08); }
.dc-tools-panel {
  border: 1px solid var(--at-border, var(--border, rgba(212, 168, 83, 0.22)));
  border-radius: 12px;
  background: var(--at-card-bg, var(--bg-surface, rgba(14, 14, 18, 0.72)));
  padding: clamp(16px, 2.5vw, 24px);
}
.dc-tools-panel h3 {
  font-family: 'Cormorant Garamond', 'Songti SC', serif;
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: var(--at-text, var(--text, #f2f0eb));
}
.dc-tools-panel p.dc-tools-lead {
  font-size: 0.8rem;
  color: var(--at-text2, var(--text2, rgba(242, 240, 235, 0.58)));
  margin-bottom: 16px;
  line-height: 1.5;
}
.dc-dropzone {
  border: 1px dashed var(--at-border, var(--border, rgba(212, 168, 83, 0.22)));
  border-radius: 10px;
  padding: 28px 16px;
  text-align: center;
  color: var(--at-text2, var(--text2, rgba(242, 240, 235, 0.58)));
  font-size: 0.82rem;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.dc-dropzone.dragover {
  border-color: var(--at-accent, var(--accent, #d4a853));
  background: rgba(212, 168, 83, 0.06);
}
.dc-dropzone input { display: none; }
.dc-tool-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin: 16px 0;
}
.dc-field label {
  display: block;
  font-size: 0.72rem;
  color: var(--at-text2, var(--text2, rgba(242, 240, 235, 0.58)));
  margin-bottom: 6px;
}
.dc-field input,
.dc-field select {
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--at-border, var(--border, rgba(212, 168, 83, 0.22)));
  background: var(--at-bg-elevated, var(--bg-dark, #0e0e12));
  color: var(--at-text, var(--text, #f2f0eb));
  font-size: 0.82rem;
}
.dc-preview-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 16px;
}
.dc-preview-box {
  border: 1px solid var(--at-border, var(--border, rgba(212, 168, 83, 0.22)));
  border-radius: 8px;
  overflow: hidden;
  background: #000;
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.dc-preview-box img {
  max-width: 100%;
  max-height: 220px;
  object-fit: contain;
}
.dc-preview-label {
  font-size: 0.68rem;
  color: var(--at-text2, var(--text2, rgba(242, 240, 235, 0.58)));
  padding: 6px 10px;
  border-top: 1px solid var(--at-border, var(--border, rgba(212, 168, 83, 0.22)));
  text-align: center;
}
.dc-tool-result {
  margin-top: 12px;
  font-size: 0.75rem;
  color: var(--at-text2, var(--text2, rgba(242, 240, 235, 0.58)));
}
.dc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--at-border, var(--border, rgba(212, 168, 83, 0.22)));
  background: transparent;
  color: var(--at-text, var(--text, #f2f0eb));
  font-size: 0.82rem;
  cursor: pointer;
}
.dc-btn-primary {
  border-color: var(--at-accent, var(--accent, #d4a853));
  background: var(--at-accent, var(--accent, #d4a853));
  color: #1a1a1a;
}
.dc-btn-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

@media (max-width: 768px) {
  .dc-tools-layout { grid-template-columns: 1fr; }
}