/* Header (Paprino) */
.site-header { position: sticky; top: 0; inset-inline: 0; background: var(--color-surface); border-bottom: 1px solid var(--gray-200); z-index: 1000; backdrop-filter: saturate(110%) blur(6px); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); min-height: 68px; }

/* Brand */
.brand a { display: inline-flex; align-items: center; gap: var(--space-3); color: var(--color-text); font-weight: 700; font-family: var(--font-heading); font-size: var(--fs-xl); letter-spacing: -0.02em; }
.brand a:hover { text-decoration: none; color: var(--color-accent-700); }
.brand-mark { font-size: 1.25em; }

/* Menu toggle */
.menu-toggle { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: var(--radius-full); border: 1px solid var(--gray-300); background: var(--color-surface); color: var(--color-text); cursor: pointer; transition: background-color var(--duration-normal) var(--easing-standard), border-color var(--duration-normal) var(--easing-standard), transform var(--duration-fast) var(--easing-standard); }
.menu-toggle:hover { background: var(--gray-100); transform: translateY(-1px); }
.menu-toggle:active { transform: translateY(0); }
.menu-toggle:focus-visible { outline: 2px solid var(--color-primary-700); outline-offset: 2px; }

/* Primary nav - base (desktop-first for progressive enhancement) */
.primary-nav { display: flex; align-items: center; gap: var(--space-7); margin-inline-start: auto; }
.nav-list { display: flex; align-items: center; gap: var(--space-6); }
.nav-link { color: var(--color-text); font-weight: 600; opacity: 0.92; }
.nav-link:hover { color: var(--color-primary-700); opacity: 1; text-decoration: none; }
.nav-link:focus-visible { outline: 2px solid var(--color-primary-700); outline-offset: 2px; border-radius: var(--radius-sm); }

/* Header search */
.header-search { display: inline-flex; align-items: center; gap: var(--space-3); }
.header-search .input { width: min(44vw, 320px); }
.header-search .btn { padding: calc(var(--space-3) + 2px) var(--space-5); }

/* Backdrop (for mobile when JS enhances) */
.nav-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.42); opacity: 0; pointer-events: none; transition: opacity var(--duration-normal) var(--easing-standard); }

/* JS-enhanced mobile menu (hidden by default only when JS adds the marker class) */
html.has-js-nav .menu-toggle { display: inline-flex; }
html.has-js-nav .primary-nav { position: fixed; top: 0; right: 0; bottom: 0; width: min(88vw, 360px); background: var(--color-surface); border-left: 1px solid var(--gray-200); box-shadow: var(--shadow-lg); padding: var(--space-8) var(--space-7); flex-direction: column; align-items: stretch; gap: var(--space-7); transform: translateX(100%); transition: transform var(--duration-normal) var(--easing-standard); }
html.has-js-nav .primary-nav .nav-list { flex-direction: column; align-items: flex-start; gap: var(--space-5); }
html.has-js-nav .primary-nav .header-search .input { width: 100%; }
html.has-js-nav .site-header.is-open .primary-nav { transform: translateX(0); }
html.has-js-nav .site-header.is-open .nav-backdrop { opacity: 1; pointer-events: auto; }

/* Desktop layout overrides */
@media (min-width: 960px) {
  .menu-toggle { display: none; }
  .nav-backdrop { display: none !important; }
  .primary-nav { position: static !important; transform: none !important; width: auto; padding: 0; box-shadow: none; border-left: 0; }
  .primary-nav .nav-list { flex-direction: row; }
}

/* Focus styles for links and controls inside header */
.site-header a:focus-visible, .site-header button:focus-visible, .site-header input:focus-visible { outline: 2px solid var(--color-primary-700); outline-offset: 2px; }

/* High contrast tweaks */
@media (prefers-contrast: more) {
  .menu-toggle { border-color: var(--gray-400); }
  .nav-link { opacity: 1; }
}