/* ============================================================
   BERREB — Components CSS
   Header, nav, footer, cards, badges
   ============================================================ */

/* --- Header --- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

/* --- Logo --- */
.logo {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: normal;
  letter-spacing: 0.06em;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition);
}

.logo:hover {
  color: var(--color-accent);
  text-decoration: none;
}

/* --- Nav links --- */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--color-text);
  text-decoration: none;
}

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-8);
  margin-top: var(--space-16);
}

.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-copy {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
}

.footer-links {
  display: flex;
  gap: var(--space-4);
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-text);
  text-decoration: none;
}

/* --- App card --- */
.app-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-decoration: none;
  transition: border-color var(--transition), background var(--transition);
}

.app-card:hover {
  border-color: var(--color-accent-dim);
  background: color-mix(in srgb, var(--color-surface) 80%, var(--color-accent) 20%);
  text-decoration: none;
}

.app-card__name {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.app-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
}

/* --- Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  font-weight: 500;
  padding: 0.2em 0.6em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
}

.badge--version {
  color: var(--color-accent);
  border-color: var(--color-accent-dim);
  background: color-mix(in srgb, var(--color-surface) 80%, var(--color-accent) 20%);
}

.badge--platform {
  color: var(--color-text-muted);
}

/* --- Store buttons --- */
.store-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.store-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  transition: border-color var(--transition), background var(--transition);
}

.store-btn:hover {
  border-color: var(--color-accent-dim);
  text-decoration: none;
}

/* --- Release notes specific --- */
.release-notes h2 {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.release-notes h3 {
  font-size: var(--text-base);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-top: var(--space-4);
  margin-bottom: var(--space-2);
}

/* Added / Fixed / Changed / Removed heading colors */
.release-notes h3:has(+ ul li)  { color: var(--color-text-muted); }

/* --- Privacy policy specific --- */
.privacy-policy h2:first-of-type {
  margin-top: 0;
}

/* --- App back button (on privacy / release-notes pages) --- */
.app-back-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) calc(var(--space-4) + 2ch) var(--space-3) var(--space-4);
  margin-bottom: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.app-back-btn:hover {
  border-color: var(--color-accent-dim);
  color: var(--color-text);
  background: color-mix(in srgb, var(--color-bg) 85%, var(--color-accent) 15%);
  text-decoration: none;
}

/* --- App sub-navigation (privacy / releases buttons) --- */
.app-subnav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
  margin-block: var(--space-10);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.app-subnav__btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) calc(var(--space-4) + 2ch) var(--space-3) var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.app-subnav__btn:hover {
  border-color: var(--color-accent-dim);
  color: var(--color-text);
  background: color-mix(in srgb, var(--color-bg) 85%, var(--color-accent) 15%);
  text-decoration: none;
}

.app-subnav__icon {
  font-size: 1em;
  line-height: 1;
}

/* --- App page hero --- */
.app-hero {
  padding-block: var(--space-16);
  text-align: center;
}

.app-hero h1 {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.app-hero p {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 540px;
  margin-inline: auto;
  margin-bottom: 0;
}

/* --- Responsive --- */
@media (max-width: 640px) {
  .site-footer .container {
    flex-direction: column;
    align-items: flex-start;
  }

  .app-hero h1 {
    font-size: var(--text-3xl);
  }

  .app-hero p {
    font-size: var(--text-base);
  }
}