/* ============================================
   Header
   ============================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(200%);
  -webkit-backdrop-filter: blur(20px) saturate(200%);
  border-bottom: 1px solid rgba(213, 221, 229, 0.5);
  transition: all var(--transition-base);
}

.site-header.scrolled {
  box-shadow: 0 1px 24px rgba(10, 22, 40, 0.06);
  background: rgba(255, 255, 255, 0.95);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--font-black);
  color: var(--color-text-dark);
  text-decoration: none;
  letter-spacing: -0.04em;
}

.site-logo span {
  background: var(--gradient-teal);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Desktop Nav */
.nav-links {
  display: none;
  gap: var(--space-1);
  align-items: center;
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-medium);
  text-decoration: none;
  transition: all var(--transition-fast);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  position: relative;
}

.nav-links a:hover {
  color: var(--color-teal);
  background: var(--color-teal-light);
}

.nav-links a.active {
  color: var(--color-teal-dark);
  background: var(--color-teal-light);
  font-weight: var(--font-semibold);
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
  .hamburger {
    display: none;
  }
}

/* Hamburger Button */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-dark);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-white);
  z-index: var(--z-overlay);
  padding: var(--space-8) var(--space-5);
}

.mobile-menu.open {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-menu a {
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  color: var(--color-text-dark);
  padding: var(--space-4) var(--space-4);
  border-radius: var(--radius-md);
  display: block;
  transition: background var(--transition-fast);
}

.mobile-menu a:hover {
  color: var(--color-teal);
  background: var(--color-teal-light);
}

@media (min-width: 768px) {
  .mobile-menu {
    display: none !important;
  }
}

/* ============================================
   Footer
   ============================================ */

.site-footer {
  background: var(--color-slate-900);
  color: var(--color-white);
  padding: var(--space-16) 0 var(--space-8);
  margin-top: var(--space-24);
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-electric);
}

.site-footer::after {
  content: '';
  position: absolute;
  top: -200px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(8, 145, 178, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  max-width: 300px;
}

.footer-col h4 {
  color: var(--color-teal-mid);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-4);
  font-weight: var(--font-bold);
}

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

.footer-col a {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
}

.footer-col a:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.35);
  font-size: var(--text-xs);
  margin-bottom: 0;
}

.footer-disclosure {
  color: rgba(255, 255, 255, 0.35);
  font-size: var(--text-xs);
  max-width: 600px;
  line-height: var(--leading-relaxed);
}

/* ============================================
   Grid Utilities
   ============================================ */

.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 {
  grid-template-columns: 1fr;
}

.grid-3 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.section {
  padding: var(--space-20) 0;
}

.section-alt {
  background: var(--gradient-warm-section);
  position: relative;
}

.section-alt::before,
.section-alt::after {
  content: '';
  position: absolute;
  left: 5%;
  right: 5%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(213, 221, 229, 0.6), transparent);
}

.section-alt::before { top: 0; }
.section-alt::after { bottom: 0; }

/* Main content area */
main {
  min-height: 60vh;
}

/* Two column layout for reviews */
.content-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 1024px) {
  .content-layout {
    grid-template-columns: 1fr 300px;
  }
}

.sidebar {
  display: none;
}

@media (min-width: 1024px) {
  .sidebar {
    display: block;
  }
}

.sidebar-sticky {
  position: sticky;
  top: 84px;
}