/* ============================================================
   PATTERNS — composite layouts shared by all pages.
   .site-nav, .site-footer, .lang-modal (specifics).
   ============================================================ */

/* ----- Site nav --------------------------------------------- */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 40px;
  z-index: 50;
}

/* Overlay variant — sits on top of hero, transparent, white text */
.site-nav-overlay {
  position: absolute;
  top: 0; left: 0; right: 0;
}
.site-nav-overlay .nav-logo { color: var(--white); }
.site-nav-overlay .pill-outline {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.25);
  color: var(--white);
  backdrop-filter: blur(8px);
}

/* Solid variant — sticky, white background, dark text (FAQ/blog/etc) */
.site-nav-solid {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 18px 40px;
}

@media (prefers-color-scheme: dark) {
  .site-nav-solid {
    background: rgba(15, 19, 24, 0.92);
  }
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--ink);
}
.nav-logo .logo-mark {
  width: 32px; height: 32px;
  border-radius: 8px;
  display: block;
  object-fit: cover;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ----- Site footer ------------------------------------------- */
.site-footer {
  padding: 80px 0 28px;
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  margin-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 56px;
  margin-bottom: 48px;
}

.footer-brand .f-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--ink);
  margin-bottom: 22px;
}
.footer-brand .f-logo .logo-mark {
  width: 32px; height: 32px;
  border-radius: 8px;
  display: block;
  object-fit: cover;
}

.footer-col h4 {
  font-family: var(--font-head);
  font-size: var(--text-xs);
  font-weight: 800;
  color: var(--ink);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-col a {
  color: var(--slate);
  font-size: var(--text-base);
  font-weight: 500;
  transition: color var(--t-base);
}
.footer-col a:hover { color: var(--blue); }

.footer-langs {
  padding: 24px 0;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.footer-langs-label {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  flex-shrink: 0;
}
.footer-langs-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.footer-langs-list a {
  display: inline-block;
  padding: 6px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  color: var(--slate);
  font-weight: 500;
  transition: color var(--t-base), border-color var(--t-base), background var(--t-base);
}
.footer-langs-list a:hover,
.footer-langs-list a.active {
  color: var(--blue);
  border-color: var(--blue);
  background: var(--blue-soft);
}
.footer-langs-list a.active { font-weight: 600; }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.f-copy, .f-meta {
  font-size: var(--text-sm);
  color: var(--muted);
  font-weight: 500;
}

/* ----- Language modal (extends .modal) ----------------------- */
.lang-modal-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 60vh;
  overflow-y: auto;
}
.lang-modal-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 13px 16px;
  color: var(--ink);
  font-size: var(--text-md);
  font-weight: 600;
  border-radius: 10px;
  border: 2px solid transparent;
  background: var(--bg-soft);
  transition: background var(--t-fast), border-color var(--t-fast), color var(--t-fast);
}
.lang-modal-list a:hover {
  background: var(--border-soft);
  border-color: var(--border);
}
.lang-modal-list a.active {
  background: var(--blue-soft);
  border-color: var(--blue);
  color: var(--blue);
}
.lang-modal-list a.active::after {
  content: '✓';
  color: var(--blue);
  font-weight: bold;
  margin-left: auto;
}

/* ----- Responsive ------------------------------------------- */
@media (max-width: 1024px) {
  .site-nav        { padding: 18px 24px; }
  .site-nav-solid  { padding: 16px 24px; }
  .footer-grid     { grid-template-columns: 1fr 1fr; gap: 40px 32px; }
  .footer-brand    { grid-column: 1 / -1; margin-bottom: 8px; }
}

@media (max-width: 640px) {
  .site-nav        { padding: 16px 18px; }
  .site-nav-solid  { padding: 14px 18px; }
  .site-footer     { padding: 60px 0 24px; }
  .footer-grid     { grid-template-columns: 1fr; gap: 36px; }
  .footer-brand    { grid-column: auto; }
  .footer-langs    { flex-direction: column; align-items: flex-start; gap: 12px; }
  .footer-bottom   { flex-direction: column; text-align: center; align-items: center; gap: 8px; }
}