/* =============================================
   RAM Solutions — Layout (Header, Footer, Grids)
   ============================================= */

/* ---- Header / Navigation ---- */
.site-header {
  background: var(--surface-glass-strong);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  border-bottom: 1px solid var(--surface-glass-border);
  transition:
    padding var(--transition-base),
    box-shadow var(--transition-base),
    background var(--transition-base);
}

/* When promo banner is visible, header sits below it */
.has-promo .site-header {
  top: 0;
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  background: var(--surface-glass-strong);
}

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0.75rem var(--section-px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: padding var(--transition-base);
}

.site-header.scrolled .header-inner {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

/* Logo */
.brand-logo {
  height: 58px;
  width: auto;
  object-fit: contain;
  transition: height var(--transition-base);
}
.site-header.scrolled .brand-logo {
  height: 45px;
}

/* Nav links */
.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-primary);
  font-weight: 600;
  font-size: var(--fs-sm);
  position: relative;
  padding: 0.3rem 0;
  transition: color var(--transition-fast);
}

.nav-links a:not(.btn)::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-400), var(--accent-cyan));
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.nav-links a:not(.btn):hover {
  color: var(--primary-400);
}
.nav-links a:not(.btn):hover::after,
.nav-links a:not(.btn).active::after {
  width: 100%;
}

/* Hamburger Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  gap: 5px;
  cursor: pointer;
  z-index: calc(var(--z-header) + 10);
  position: relative;
}

.menu-toggle .bar {
  display: block;
  width: 26px;
  height: 2.5px;
  background: var(--primary-700);
  border-radius: var(--radius-full);
  transition:
    transform var(--transition-base),
    opacity var(--transition-fast),
    background var(--transition-fast);
}

.menu-toggle.active .bar:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}
.menu-toggle.active .bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.menu-toggle.active .bar:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* Mobile nav overlay */
.mobile-nav-overlay {
  display: none;
}

/* ---- Footer ---- */
.site-footer {
  background: linear-gradient(180deg, var(--primary-900) 0%, #000d1a 100%);
  color: var(--text-muted);
  padding: var(--section-py) var(--section-px) 2rem;
  position: relative;
  overflow: hidden;
}

/* Decorative glow line at top */
.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary-400), var(--accent-cyan), var(--primary-400), transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 3rem;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-col h4 {
  color: var(--text-on-primary);
  font-family: var(--font-heading);
  font-size: 1.15rem;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.footer-brand-text {
  font-size: var(--fs-sm);
  line-height: 1.8;
  max-width: 320px;
}

.footer-logo {
  height: 60px;
  object-fit: contain;
  margin-bottom: 1.2rem;
}

.contact-list li {
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: var(--fs-sm);
  transition: color var(--transition-fast);
}
.contact-list li:hover {
  color: var(--text-on-dark);
}
.contact-list li i {
  color: var(--accent-cyan);
  width: 18px;
  text-align: center;
  font-size: 0.95rem;
}

.footer-bottom {
  text-align: center;
  font-size: var(--fs-xs);
  padding-top: 2rem;
  max-width: var(--container-max);
  margin: 0 auto;
  color: var(--text-muted);
}

/* ---- Grids ---- */
.grid-services {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--gap-lg);
  max-width: var(--container-max);
  margin: 0 auto;
}

.grid-products {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--gap-lg);
  max-width: var(--container-max);
  margin: 0 auto;
}

.grid-why-us {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap-lg);
  max-width: 900px;
  margin: 0 auto;
}