:root {
  --csc-ui-header-bg: #f4f5f7;
  --csc-ui-header-text: #111827;
  --csc-ui-header-circle-bg: #eceef1;
  --csc-ui-header-circle-border: #e5e7eb;
}

.csc-ui-header-shell {
  position: relative;
  z-index: 5;
  background: var(--csc-ui-header-bg);
  padding: 0.8rem 0.95rem 0.75rem;
  border-bottom: 1px solid #e5e7eb;
}

.csc-ui-header-line1 {
  min-height: 3.25rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.65rem;
}

.csc-ui-header-title {
  margin: 0;
  font-size: clamp(1.15rem, 4.6vw, 2rem);
  font-weight: 700;
  text-align: center;
  color: var(--csc-ui-header-text);
  line-height: 1.2;
}

.csc-ui-header-left,
.csc-ui-header-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.csc-ui-header-icon-btn {
  width: 3rem;
  height: 3rem;
  border-radius: 999px;
  border: 1px solid var(--csc-ui-header-circle-border);
  background: var(--csc-ui-header-circle-bg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #111827;
  text-decoration: none;
  cursor: pointer;
}

.csc-ui-header-icon-btn svg {
  width: 1.5rem;
  height: 1.5rem;
  stroke: currentColor;
  fill: none;
  stroke-width: 2.1;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.csc-ui-header-line2 {
  margin-top: 0.7rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.csc-ui-header-filters {
  display: inline-flex;
  gap: 0.6rem;
  min-width: 100%;
  padding-bottom: 0.2rem;
}

.csc-ui-header-filters > * {
  flex: 0 0 auto;
}

.csc-ui-header-source-title-hidden,
.csc-ui-header-source-back-hidden {
  display: none !important;
}

body.csc-ui-header-enabled {
  padding-top: 0;
}