:root {
  --bhat-bg-card: #ffffff;
  --bhat-border: #e2e8f0;
  --bhat-text: #1e293b;
  --bhat-muted: #64748b;
  --bhat-primary: #059669;
  --bhat-primary-hover: #047857;
  --bhat-primary-fg: #ffffff;
  --bhat-btn-bg: #f8fafc;
  --bhat-btn-border: #cbd5e1;
  --bhat-btn-hover: #e2e8f0;
  --bhat-stat-bg: #f8fafc;
  --bhat-feedback-bg: #ecfdf5;
  --bhat-feedback-text: #065f46;
  --bhat-code-bg: #f1f5f9;
}

.bhat-main {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

.bhat-card {
  background: var(--bhat-bg-card);
  border: 1px solid var(--bhat-border);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.bhat-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.bhat-toolbar-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.bhat-toggle-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--bhat-text);
  cursor: pointer;
}

.bhat-btn {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.bhat-btn-outline {
  background: var(--bhat-btn-bg);
  color: var(--bhat-text);
  border: 1px solid var(--bhat-btn-border);
}

.bhat-btn-outline:hover {
  background: var(--bhat-btn-hover);
}

.bhat-formats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.bhat-format-box {
  background: var(--bhat-stat-bg);
  border: 1px solid var(--bhat-border);
  border-radius: 8px;
  padding: 1rem;
}

.bhat-box-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.bhat-box-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--bhat-text);
}

.bhat-copy-btn {
  background: var(--bhat-btn-bg);
  border: 1px solid var(--bhat-btn-border);
  color: var(--bhat-text);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.bhat-copy-btn:hover {
  border-color: var(--bhat-primary);
  color: var(--bhat-primary);
}

.bhat-textarea {
  width: 100%;
  box-sizing: border-box;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--bhat-text);
  background-color: var(--bhat-bg-card);
  border: 1px solid var(--bhat-border);
  border-radius: 6px;
  resize: vertical;
}

.bhat-textarea:focus {
  outline: 2px solid var(--bhat-primary);
  outline-offset: -1px;
}

.bhat-mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  word-break: break-all;
}

.bhat-feedback {
  display: none;
  margin-bottom: 1.25rem;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  background-color: var(--bhat-feedback-bg);
  color: var(--bhat-feedback-text);
  font-size: 0.875rem;
  font-weight: 500;
}

.bhat-inspector-section {
  border-top: 1px solid var(--bhat-border);
  padding-top: 1.25rem;
}

.bhat-inspector-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--bhat-text);
  margin: 0 0 0.75rem 0;
}

.bhat-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--bhat-border);
  border-radius: 8px;
}

.bhat-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  text-align: left;
}

.bhat-table th, .bhat-table td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--bhat-border);
}

.bhat-table th {
  background: var(--bhat-stat-bg);
  color: var(--bhat-muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.bhat-table code {
  background-color: var(--bhat-code-bg);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-size: 0.8125rem;
}

@media (max-width: 768px) {
  .bhat-formats-grid {
    grid-template-columns: 1fr;
  }
}
/* tf:dark-palette — generated by migrate_chrome.py */
/* Neutrals inherit the shared chrome tokens so all tools share one
   ground; brand hues are kept and lightened, never inverted. */
[data-theme="dark"] {
  --bhat-bg-card: var(--tf-surface);
  --bhat-border: var(--tf-surface);
  --bhat-text: var(--tf-ink);
  --bhat-muted: var(--tf-ink-faint);
  --bhat-primary: #62d2af;
  --bhat-primary-hover: #59cfad;
  --bhat-primary-fg: var(--tf-surface);
  --bhat-btn-bg: var(--tf-surface);
  --bhat-btn-border: #98abc3;
  --bhat-btn-hover: var(--tf-surface);
  --bhat-stat-bg: var(--tf-surface);
  --bhat-feedback-bg: var(--tf-surface);
  --bhat-feedback-text: #59cfae;
  --bhat-code-bg: var(--tf-surface);
}