/*
  Layout CSS for Phase E
  - Token-only spacing/typography/colors via base.css variables
  - Styles only the layout shell: header, main, footer
  - No page-specific rules
*/

header {
  position: relative;
  z-index: 100;
  width: 100%;
  padding-block: var(--spacing-lg);
  padding-inline: var(--spacing-md);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur-lg));
  border-bottom: 1px solid var(--glass-border);
}

.navbar-container {
  width: 100%;
  max-width: calc(var(--spacing-xl) * 30);
  margin-inline: auto;
  padding-inline: var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.navbar-logo {
  flex-shrink: 0;
  margin: 0;
  font-size: var(--font-size-xl);
  font-family: var(--font-family-primary);
  font-weight: var(--font-weight-bold);
}

.navbar-logo a {
  color: var(--accent-primary);
}

.navbar-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  margin: 0;
  padding: 0;
  list-style: none;
  flex-wrap: nowrap;
}

.nav-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur-md));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--accent-primary);
  text-decoration: none;
  transition: border-color 200ms ease-out,
              box-shadow 200ms ease-out,
              background 200ms ease-out,
              opacity 200ms ease-out;
}

/* Glow halo effect */
.nav-item::before {
  content: '';
  position: absolute;
  inset: -8px;
  background: radial-gradient(circle, rgba(59, 110, 168, 0.25) 0%, transparent 70%);
  border-radius: var(--radius-lg);
  opacity: 0;
  transition: opacity 240ms cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
  z-index: -1;
}

.nav-item:hover,
.nav-item:focus {
  opacity: 1;
  border-color: rgba(255, 255, 255, 0.7);
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 6px 18px rgba(59, 110, 168, 0.18),
              inset 0 0 12px rgba(255, 255, 255, 0.4);
}

.nav-item:hover::before,
.nav-item:focus::before {
  opacity: 1;
}

.nav-icon {
  font-size: var(--font-size-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-label {
  font-size: var(--font-size-xs);
  font-family: var(--font-family-primary);
  font-weight: var(--font-weight-bold);
  white-space: nowrap;
  opacity: 0.8;
  color: var(--accent-primary);
  transition: opacity 240ms cubic-bezier(0.34, 1.56, 0.64, 1),
              color 240ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.nav-item:hover .nav-label,
.nav-item:focus .nav-label {
  opacity: 1;
  color: var(--text-primary);
}

/* Disable animations if prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .nav-item,
  .nav-item::before,
  .nav-icon,
  .nav-label {
    transition: none;
  }
  
  .nav-item:hover,
  .nav-item:focus {
    opacity: 1;
  }
}

main,
footer {
  width: 100%;
  max-width: calc(var(--spacing-xl) * 30);
  margin-inline: auto;
  padding-inline: var(--spacing-md);
}

main {
  padding-block: var(--spacing-lg);
}

footer {
  padding-block: var(--spacing-md);
  border-top: 1px solid var(--glass-border);
}

body.page-main {
  background: linear-gradient(180deg, var(--theme-surface-surface) 0%, var(--theme-surface-surface-container) 100%);
}

body.page-main .site-header-main {
  padding-block: 0;
  padding-inline: 0;
  background: var(--theme-surface-overlay);
  backdrop-filter: none;
  border-bottom: 1px solid rgba(var(--palette-grey-1000-rgb), 0.08);
  box-shadow: 0 2px 16px rgba(var(--palette-grey-1000-rgb), 0.05);
}

body.page-main .site-header-main::before {
  content: '';
  display: block;
  height: 4px;
  background: var(--palette-grey-1000);
}

body.page-main .navbar-container-main {
  max-width: 1720px;
  min-height: 78px;
  padding-inline: 32px;
}

body.page-main .main-brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--accent-success);
}

body.page-main .main-brand:hover {
  text-decoration: none;
}

body.page-main .main-brand-text {
  display: grid;
  gap: 2px;
  text-align: right;
}

body.page-main .main-brand-title,
body.page-main .main-brand-subtitle {
  font-family: var(--font-family-primary);
  font-size: 24px;
  line-height: 1;
  color: #43b69d;
}

body.page-main .main-brand-subtitle {
  color: var(--accent-primary);
}

body.page-main .main-brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  border-radius: 16px;
  background: rgba(67, 182, 157, 0.12);
  color: #43b69d;
}

body.page-main .navbar-nav-main {
  gap: 8px;
}

body.page-main .nav-item-main {
  flex-direction: row;
  gap: 8px;
  padding: 12px 18px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 18px;
  color: var(--theme-surface-on-surface-variant);
  backdrop-filter: none;
  box-shadow: none;
}

body.page-main .nav-item-main::before {
  display: none;
}

body.page-main .nav-item-main .nav-label {
  font-size: 15px;
  color: var(--theme-surface-on-surface-variant);
  opacity: 1;
}

body.page-main .nav-item-main .nav-icon {
  color: rgba(var(--palette-grey-1000-rgb), 0.55);
}

body.page-main .nav-item-main:hover,
body.page-main .nav-item-main:focus-visible,
body.page-main .nav-item-main.is-active {
  background: rgba(90, 128, 223, 0.14);
  border-color: rgba(90, 128, 223, 0.08);
  box-shadow: none;
}

body.page-main .nav-item-main:hover .nav-label,
body.page-main .nav-item-main:focus-visible .nav-label,
body.page-main .nav-item-main.is-active .nav-label,
body.page-main .nav-item-main:hover .nav-icon,
body.page-main .nav-item-main:focus-visible .nav-icon,
body.page-main .nav-item-main.is-active .nav-icon {
  color: var(--accent-primary);
}

body.page-main main,
body.page-main footer {
  width: 100%;
  max-width: 100%;
  padding-inline: 0;
}

body.page-main main {
  padding-block: 0;
}

body.page-main .site-footer-main {
  padding-block: 0;
  border-top: 0;
  background: #3367e3;
  color: var(--theme-surface-surface);
}

body.page-main .main-footer-content {
  max-width: 1720px;
  margin-inline: auto;
  padding: 58px 96px 44px;
}

body.page-main .main-footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr 1.1fr;
  gap: 48px;
  align-items: start;
}

body.page-main .footer-column-title,
body.page-main .footer-brand-heading,
body.page-main .footer-social-title {
  margin: 0 0 18px;
  color: var(--theme-surface-surface);
  font-family: var(--font-family-primary);
  font-size: 28px;
}

body.page-main .footer-brand-heading {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

body.page-main .footer-brand-icon {
  color: var(--theme-surface-surface);
}

body.page-main .footer-description,
body.page-main .footer-contact-list,
body.page-main .footer-link-list {
  margin: 0;
  padding: 0;
  list-style: none;
  color: rgba(var(--palette-grey-0-rgb), 0.88);
  font-size: 18px;
  line-height: 1.9;
}

body.page-main .footer-link-list a,
body.page-main .footer-contact-list li {
  color: rgba(var(--palette-grey-0-rgb), 0.88);
}

body.page-main .footer-link-list a:hover {
  color: var(--theme-surface-surface);
}

body.page-main .newsletter-shell {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

body.page-main .newsletter-input,
body.page-main .newsletter-button {
  border-radius: 14px;
  text-align: center;
  font-family: var(--font-family-primary);
}

body.page-main .newsletter-input {
  padding: 16px 18px;
  background: rgba(var(--palette-grey-0-rgb), 0.08);
  border: 1px solid rgba(var(--palette-grey-0-rgb), 0.15);
  color: rgba(var(--palette-grey-0-rgb), 0.6);
}

body.page-main .newsletter-button {
  padding: 14px 18px;
  background: var(--theme-surface-surface);
  color: var(--accent-primary);
}

body.page-main .footer-socials {
  display: flex;
  gap: 12px;
  margin-top: 12px;
}

body.page-main .footer-social-link {
  display: inline-flex;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(var(--palette-grey-0-rgb), 0.12);
  color: var(--theme-surface-surface);
}

body.page-main .footer-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid rgba(var(--palette-grey-0-rgb), 0.18);
}

body.page-main .footer-stat {
  display: grid;
  gap: 8px;
  text-align: center;
}

body.page-main .footer-stat strong {
  font-family: var(--font-family-primary);
  font-size: 44px;
  color: var(--theme-surface-surface);
}

body.page-main .footer-stat span {
  color: rgba(var(--palette-grey-0-rgb), 0.84);
  font-size: 20px;
}

@media (min-width: calc(var(--spacing-xl) * 24)) {
  header,
  main,
  footer {
    padding-inline: var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  .navbar-container {
    gap: var(--spacing-sm);
  }

  .navbar-nav {
    gap: var(--spacing-sm);
  }

  .nav-item {
    padding: var(--spacing-sm);
  }

  .nav-label {
    font-size: var(--font-size-xs);
  }

  .nav-icon {
    font-size: var(--font-size-md);
  }

  body.page-main .navbar-container-main,
  body.page-main .main-footer-content {
    padding-inline: 20px;
  }

  body.page-main .main-footer-grid,
  body.page-main .footer-stats-row {
    grid-template-columns: 1fr;
  }
}