/* ============================================================
   LAYOUT — Navbar, Grid, Container, Footer
   ============================================================ */

/* --- NAVBAR --- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  height: var(--navbar-height);
  background: rgba(252, 249, 242, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: box-shadow var(--transition-base), background var(--transition-base);
}

.navbar.scrolled {
  box-shadow: 0 1px 0 rgba(139, 114, 102, 0.15), var(--shadow-ambient);
  background: rgba(252, 249, 242, 0.96);
}

.navbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
  transition: opacity var(--transition-fast);
}
.navbar-logo:hover { opacity: 0.75; }

.logo-mark {
  color: var(--primary);
  font-size: 1.2rem;
  line-height: 1;
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--on-surface);
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  flex: 1;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--on-surface-variant);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 1px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform var(--transition-fast);
  transform-origin: left;
}

.nav-link:hover { color: var(--on-surface); }
.nav-link:hover::after,
.nav-link.active::after { transform: scaleX(1); }
.nav-link.active { color: var(--on-surface); }

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-left: auto;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--on-surface-variant);
  transition: background var(--transition-fast), color var(--transition-fast);
  position: relative;
}
.icon-btn:hover {
  background: var(--surface-container);
  color: var(--on-surface);
}

.cart-badge {
  position: absolute;
  top: 4px; right: 4px;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  background: var(--primary);
  color: var(--on-primary);
  font-size: 0.6rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition: transform var(--transition-fast);
}
.cart-badge.bump {
  animation: badgeBump 200ms ease;
}
@keyframes badgeBump {
  0%,100% { transform: scale(1); }
  50%      { transform: scale(1.4); }
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
}
.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--on-surface);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--surface-container-lowest);
  padding: var(--space-md) var(--space-xl) var(--space-xl);
  gap: var(--space-md);
  border-top: 1px solid var(--surface-container-high);
}

/* --- MAIN CONTAINER --- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container-sm {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* --- FOOTER --- */
.site-footer {
  background: var(--surface-container-high);
  padding: var(--space-3xl) 0 var(--space-xl);
  margin-top: var(--space-3xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand {}
.footer-brand .logo-text { font-size: 1.25rem; margin-bottom: var(--space-md); display: block; }
.footer-brand p {
  font-size: 0.875rem;
  color: var(--on-surface-variant);
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  margin-bottom: var(--space-md);
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: var(--space-sm); }
.footer-col ul a {
  font-size: 0.875rem;
  color: var(--on-surface-variant);
  transition: color var(--transition-fast);
}
.footer-col ul a:hover { color: var(--primary); }

.footer-bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(139, 114, 102, 0.15);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--on-surface-variant);
}

/* --- RESPONSIVE --- */
@media (max-width: 1024px) {
  .navbar-inner { padding: 0 var(--space-lg); }
  .container { padding: 0 var(--space-lg); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .desktop-nav { display: none; }
  .hamburger { display: flex; }
  .mobile-nav.open { display: flex; }
  .navbar { height: auto; min-height: var(--navbar-height); }
  .navbar-inner { height: var(--navbar-height); padding: 0 var(--space-md); }
  #page-root { padding-top: var(--navbar-height); }
  .container { padding: 0 var(--space-md); }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-xl); }
}