/* ============================================
   LAYOUT.CSS — Navbar, Footer, Container
   ============================================ */

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  z-index: 500;
  transition: all var(--duration) var(--ease);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--fs-xl);
  color: var(--text-primary);
}

.brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #FFFFFF;
  border-radius: var(--radius);
}

.brand-accent {
  color: var(--primary);
}

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

.nav-link {
  display: flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius);
  transition: all var(--duration) var(--ease);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  background: var(--primary-50);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.navbar-cta {
  font-size: var(--fs-sm);
}

.navbar-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border-radius: var(--radius);
  transition: background var(--duration) var(--ease);
}

.navbar-toggle:hover {
  background: var(--bg-tertiary);
}

.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--duration) var(--ease);
  transform-origin: center;
}

.navbar-toggle.active .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.navbar-toggle.active .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Footer --- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-brand .navbar-brand {
  margin-bottom: var(--space-4);
}

.footer-desc {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-6);
  max-width: 320px;
}

.footer-social {
  display: flex;
  gap: var(--space-3);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  transition: all var(--duration) var(--ease);
}

.social-link:hover {
  background: var(--primary);
  color: #FFFFFF;
  transform: translateY(-2px);
}

.footer-links h4 {
  font-size: var(--fs-base);
  font-weight: 700;
  margin-bottom: var(--space-5);
  color: var(--text-primary);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links a {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  transition: color var(--duration) var(--ease);
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: var(--space-8);
  text-align: center;
}

.footer-bottom p {
  font-size: var(--fs-sm);
  color: var(--text-muted);
}