/* Tab shell — nav + panels. Dragon Design System tokens (defined in index.html :root). */

.tab-nav {
  background: var(--arc-white);
  border-bottom: 1px solid var(--arc-gray-100);
  position: sticky;
  top: 0;
  z-index: 200;
  display: flex;
  gap: 4px;
  padding: 0 24px;
  overflow-x: auto;
  max-width: 1200px;
  margin: 0 auto;
}

.tab-btn {
  border: none;
  background: none;
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--arc-gray-500);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  white-space: nowrap;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.tab-btn:hover { color: var(--arc-gray-900); }

.tab-btn.active {
  color: var(--arc-red);
  border-bottom-color: var(--arc-red);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Section header helper reused by tab modules */
.section-kicker {
  width: 40px;
  height: 3px;
  background: var(--arc-red);
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-headline);
  font-size: 24px;
  font-weight: 700;
}

/* Loading placeholder for lazy tabs */
.tab-loading {
  padding: 64px 24px;
  text-align: center;
  color: var(--arc-gray-500);
  font-family: var(--font-body);
}