.shell {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
  .shell {
    padding: 0 var(--spacing-md);
  }
}

@media (min-width: 1200px) {
  .shell {
    padding: 0 var(--spacing-lg);
  }
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--spacing-md);
}

.col-span-12 {
  grid-column: span 12;
}

@media (min-width: 768px) {
  .col-md-4 {
    grid-column: span 4;
  }

  .col-md-6 {
    grid-column: span 6;
  }

  .col-md-8 {
    grid-column: span 8;
  }

  .col-offset-md-2 {
    grid-column-start: 3;
  }
}

@media (min-width: 1024px) {
  .col-lg-3 {
    grid-column: span 3;
  }

  .col-lg-4 {
    grid-column: span 4;
  }

  .col-lg-6 {
    grid-column: span 6;
  }

  .col-offset-lg-3 {
    grid-column-start: 4;
  }
}

/* Fix mobile menu accessibility and prevent body scroll when open */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
}

.brand-link {
  display: inline-block;
}

.brand-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--color-bg-card);
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  transition: border-color var(--transition-fast);
}

.nav-toggle:focus {
  outline: none;
  border-color: var(--color-primary);
}

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

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  position: relative;
  transition: background var(--transition-normal);
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  transition: transform var(--transition-normal);
}

.hamburger::before {
  top: -8px;
}

.hamburger::after {
  bottom: -8px;
}

.nav-open .hamburger {
  background: transparent;
}

.nav-open .hamburger::before {
  transform: rotate(45deg) translateY(8px) translateX(8px);
}

.nav-open .hamburger::after {
  transform: rotate(-45deg) translateY(-8px) translateX(8px);
}

.main-nav {
  position: fixed;
  top: 61px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg-dark);
  transform: translateX(-100%);
  transition: transform var(--transition-normal);
  overflow-y: auto;
  z-index: 999;
}

.nav-open .main-nav {
  transform: translateX(0);
}

.nav-open .site-header {
  height: 100vh;
}

/* Prevent body scroll when mobile menu is open */
.nav-open {
  overflow: hidden;
}

@media (min-width: 768px) {
  .main-nav {
    position: static;
    transform: none;
    background: transparent;
    overflow-y: visible;
  }

  .nav-open {
    overflow: visible;
  }

  .nav-open .site-header {
    height: auto;
  }
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: var(--spacing-lg);
}

@media (min-width: 768px) {
  .nav-list {
    flex-direction: row;
    padding: 0;
    gap: var(--spacing-md);
  }
}

.nav-link {
  display: block;
  padding: var(--spacing-md) var(--spacing-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  border-bottom: 1px solid var(--color-border);
  font-size: 1.125rem;
}

@media (min-width: 768px) {
  .nav-link {
    border-bottom: none;
    padding: var(--spacing-sm);
    font-size: 1rem;
  }
}

.nav-link:hover,
.nav-link:focus,
.nav-link--current {
  color: var(--color-primary);
  outline: none;
}

.site-footer {
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  background: var(--color-bg-darker);
  border-top: 1px solid var(--color-border);
}

.footer-top {
  margin-bottom: var(--spacing-xl);
}

.footer-heading {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.footer-tagline {
  color: var(--color-text-secondary);
  margin-top: var(--spacing-sm);
}

.footer-contact,
.footer-nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-contact li,
.footer-nav li {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.footer-contact a,
.footer-nav a {
  color: var(--color-text-secondary);
}

.footer-contact a:hover,
.footer-nav a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
}

.footer-disclaimer {
  margin-bottom: var(--spacing-md);
}

.footer-disclaimer p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.footer-legal {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

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

.legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.legal-links a {
  color: var(--color-text-muted);
}

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