/* header.css — skip link, announcement bar, sticky header, brand, header actions (11 s1-2, s6). */

.skip-link {
  position: absolute;
  left: var(--sp-4);
  top: calc(var(--sp-2) * -10);
  z-index: var(--z-toast);
  padding: var(--sp-2) var(--sp-4);
  border-radius: var(--r-sm);
  background: var(--primary);
  color: var(--on-primary);
  font-weight: var(--fw-semibold);
}

.skip-link:focus { top: var(--sp-2); color: var(--on-primary); text-decoration: none; }

/* ---- Announcement bar (fixed 40 px) ---- */
.announcement { background: var(--primary-tint); border-bottom: var(--border-w) solid var(--border); }

.announcement__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  min-height: var(--announcement-h);
}

.announcement__text { font-size: var(--fs-sm); color: var(--text-strong); display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-2); }
.announcement__text a { font-weight: var(--fw-semibold); }
.announcement__close { width: var(--control-h-sm); height: var(--control-h-sm); }

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  height: var(--header-h);
  background: var(--surface);
  border-bottom: var(--border-w) solid var(--border);
  transition: box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.site-header.is-scrolled { box-shadow: var(--sh-2); }
.site-header.is-hidden { transform: translateY(-100%); }

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  height: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  color: var(--text-strong);
  font-weight: var(--fw-bold);
  font-size: var(--fs-h4);
  white-space: nowrap;
}

/* Smallest phones (320px): a smaller wordmark keeps the header actions on screen. */
@media (max-width: 359.98px) {
  .brand { font-size: var(--fs-body); }
}

.brand:hover { color: var(--text-strong); text-decoration: none; }
.brand__mark { flex: none; width: var(--brand-mark); height: var(--brand-mark); }

.site-header__actions { display: flex; align-items: center; gap: var(--sp-1); margin-left: auto; }

.site-header__cta { display: none; margin-left: var(--sp-2); }

@media (min-width: 576px) {
  .site-header__cta { display: inline-flex; }
}

@media (min-width: 992px) {
  .site-header__menu { display: none; }
  .site-header__inner { gap: var(--sp-6); }
  .site-header__actions { margin-left: auto; }
}

/* Page scroll lock while a dialog (drawer, search) is open. */
.is-scroll-locked { overflow: hidden; }
.is-scroll-locked body { padding-right: var(--scrollbar-w, 0); }