:root {
  --hi-primary: #92400e;
  --hi-primary-hover: #78350f;
  --hi-bg-card: #ffffff;
  --hi-border: #e2e8f0;
  --hi-text-main: #0f172a;
  --hi-text-muted: #64748b;
  --hi-pill-bg: #f1f5f9;
  --hi-pill-hover: #e2e8f0;
  --hi-result-bg: #f8fafc;
}

.hi-tool-container {
  max-width: 900px;
  margin: 0 auto 3rem auto;
  font-family: inherit;
  color: var(--hi-text-main);
}

.hi-editor-card {
  background: var(--hi-bg-card);
  border: 1px solid var(--hi-border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.hi-presets-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--hi-border);
}

.hi-presets-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--hi-text-muted);
}

.hi-pill-btn {
  background: var(--hi-pill-bg);
  border: 1px solid var(--hi-border);
  color: var(--hi-text-main);
  border-radius: 9999px;
  padding: 0.25rem 0.65rem;
  font-size: 0.75rem;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.hi-pill-btn:hover {
  background: var(--hi-pill-hover);
  border-color: var(--hi-primary);
}

.hi-date-select-row {
  display: flex;
  gap: 1rem;
  align-items: end;
  margin-bottom: 1.25rem;
}

@media (max-width: 600px) {
  .hi-date-select-row {
    flex-wrap: wrap;
  }
}

.hi-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  color: var(--hi-text-main);
}

.hi-field select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--hi-border);
  border-radius: 8px;
  background: var(--hi-bg-card);
  color: var(--hi-text-main);
  font-size: 0.95rem;
  font-family: inherit;
  box-sizing: border-box;
}

.hi-field select:focus {
  outline: none;
  border-color: var(--hi-primary);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.hi-btn-wrap {
  display: flex;
  align-items: flex-end;
}

.hi-today-btn {
  background: var(--hi-pill-bg);
  border: 1px solid var(--hi-border);
  color: var(--hi-text-main);
  border-radius: 8px;
  padding: 0.65rem 1rem;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}

.hi-today-btn:hover {
  background: var(--hi-primary);
  color: #ffffff;
  border-color: var(--hi-primary);
}

.hi-filters-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hi-filter-chip {
  background: var(--hi-pill-bg);
  border: 1px solid var(--hi-border);
  color: var(--hi-text-muted);
  border-radius: 8px;
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.hi-filter-chip:hover {
  background: var(--hi-pill-hover);
  color: var(--hi-text-main);
}

.hi-filter-chip.hi-active {
  background: var(--hi-primary);
  color: #ffffff;
  border-color: var(--hi-primary);
}

.hi-results-card {
  background: var(--hi-result-bg);
  border: 1px solid var(--hi-border);
  border-radius: 12px;
  padding: 1.75rem;
}

.hi-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.hi-sub-title {
  font-size: 1rem;
  font-weight: 800;
  margin: 0;
  color: var(--hi-text-main);
}

.hi-count-badge {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--hi-primary);
}

.hi-timeline {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.hi-event-card {
  background: var(--hi-bg-card);
  border: 1px solid var(--hi-border);
  border-radius: 10px;
  padding: 1.25rem;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

@media (max-width: 540px) {
  .hi-event-card {
    flex-direction: column;
    gap: 0.5rem;
  }
}

.hi-year-badge {
  background: var(--hi-pill-bg);
  border: 1px solid var(--hi-border);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  text-align: center;
  min-width: 80px;
}

.hi-year-num {
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--hi-primary);
  line-height: 1;
  display: block;
}

.hi-year-sub {
  font-size: 0.68rem;
  color: var(--hi-text-muted);
  font-weight: 600;
}

.hi-event-content {
  flex: 1;
}

.hi-event-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.35rem;
  gap: 0.5rem;
}

.hi-event-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--hi-text-main);
  margin: 0;
}

.hi-cat-tag {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
}

.hi-c-milestone { background: #fee2e2; color: #991b1b; }
.hi-c-science { background: #dbeafe; color: #1e40af; }
.hi-c-birth { background: #fef3c7; color: #92400e; }

.hi-event-desc {
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--hi-text-main);
  margin: 0;
}

.hi-tip-box {
  background: var(--hi-bg-card);
  border: 1px solid var(--hi-border);
  border-radius: 8px;
  padding: 1.25rem;
}

.hi-tip-title {
  font-size: 0.9rem;
  font-weight: 700;
  margin: 0 0 0.25rem 0;
  color: var(--hi-primary);
}

.hi-tip-box p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--hi-text-muted);
  line-height: 1.5;
}

.hi-ad {
  overflow: hidden;
  min-height: 280px;
}
/* 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"] {
  --hi-primary: #d38f66;
  --hi-primary-hover: #cf8459;
  --hi-bg-card: var(--tf-surface);
  --hi-border: var(--tf-surface);
  --hi-text-main: var(--tf-ink);
  --hi-text-muted: var(--tf-ink-faint);
  --hi-pill-bg: var(--tf-surface);
  --hi-pill-hover: var(--tf-surface);
  --hi-result-bg: var(--tf-surface);
}