.header {
  height: 64px;
  background-color: var(--surface-color);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  position: sticky;
  top: 0;
  z-index: 50;
  transition:
    background-color 0.3s ease,
    border-color 0.3s ease;
}

.headerActions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.planButton {
  padding: 8px 16px;
  background-color: transparent;
  border: 1px solid var(--primary-blue);
  color: var(--primary-blue);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.planButton:hover {
  background-color: var(--primary-blue);
  color: white;
}

.segmentControl {
  display: inline-flex;
  background-color: rgba(0, 0, 0, 0.06);
  border-radius: 999px;
  padding: 4px;
  gap: 6px;
  align-items: center;
}

.segmentButton {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  transition: all 0.18s ease;
}

.segmentButton:hover {
  background-color: var(--border-light);
  color: var(--text-primary);
}

.activeSegment {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.02),
    rgba(0, 0, 0, 0.04)
  );
  box-shadow: 0 6px 14px rgba(2, 6, 23, 0.4);
  color: var(--surface-color);
}

.notificationButton {
  position: relative;
  width: 36px;
  height: 36px;
  background-color: transparent;
  border: none;
  border-radius: 50%;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s ease;
}

.notificationButton:hover {
  background-color: var(--border-light);
}

.notificationDot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 8px;
  height: 8px;
  background-color: #ea4335;
  border-radius: 50%;
  border: 2px solid var(--surface-color);
}

.userMenu {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  transition: background-color 0.2s ease;
}

.userMenu:hover {
  background-color: var(--border-light);
}

.userEmail {
  opacity: 0.9;
  font-size: 14px;
  color: var(--text-secondary);
}

.userTitleMenu {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Dropdown trigger style polished */
.userMenu:after {
  content: "";
}

.userMenu svg {
  font-size: 16px;
  color: var(--text-secondary);
}

@media (max-width: 768px) {
  .header {
    padding: 0 16px;
  }

  .planButton {
    display: none;
  }

  .themeToggleButton {
    display: none;
  }
}