/* WAIDN — Layout: containers, nav, hero, footer, grid */

.container      { max-width: var(--max-width-wide); margin: 0 auto; padding: 0 var(--space-6); }
.container-text { max-width: var(--max-width-content); margin: 0 auto; padding: 0 var(--space-6); }
.page          { display: flex; flex-direction: column; min-height: 100vh; }
.page-main     { flex: 1 0 auto; }

/* --- Top navigation --- */
.top-nav {
  position: sticky; top: 0; z-index: 100;
  height: var(--nav-height);
  background: var(--color-surface-white);
  border-bottom: 1px solid var(--color-border-default);
}
.top-nav .nav-inner {
  max-width: var(--max-width-wide); margin: 0 auto; height: 100%;
  padding: 0 var(--space-6);
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display); font-size: var(--text-md);
  font-weight: var(--weight-semibold); color: var(--color-text-primary);
}
.nav-logo:hover { text-decoration: none; }
.nav-logo .accent { color: var(--color-brand-primary); }
.nav-links { display: flex; align-items: center; gap: var(--space-6); list-style: none; }
.nav-links a {
  font-family: var(--font-ui); font-size: var(--text-sm);
  color: var(--color-text-secondary);
}
.nav-links a:hover { color: var(--color-brand-primary); text-decoration: none; }
.nav-links a.is-active { color: var(--color-brand-primary); font-weight: var(--weight-medium); }
.nav-toggle { display: none; font-size: var(--text-xl); color: var(--color-text-primary); padding: var(--space-2); }

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: var(--nav-height); left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--color-surface-white);
    border-bottom: 1px solid var(--color-border-default);
    max-height: 0; overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .nav-links.is-open { max-height: 60vh; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: var(--space-4) var(--space-6); width: 100%; }
}

/* --- Hero --- */
.hero {
  position: relative; min-height: 280px;
  display: flex; align-items: flex-end;
  color: var(--color-surface-white);
  overflow: hidden;
}
.hero.has-image::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(4,44,83,0.15) 0%, rgba(4,44,83,0.78) 100%);
}
.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-content {
  position: relative; z-index: 1;
  max-width: var(--max-width-wide); width: 100%;
  margin: 0 auto; padding: var(--space-12) var(--space-6);
}
.hero h1 { color: var(--color-surface-white); margin: var(--space-4) 0; }
.hero-meta {
  font-family: var(--font-ui); font-size: var(--text-sm);
  color: rgba(255,255,255,0.65);
  display: flex; flex-wrap: wrap; gap: var(--space-4);
}
@media (max-width: 768px) {
  .hero { min-height: 220px; }
  .hero h1 { font-size: var(--text-2xl); }
}

/* --- Article layout grid --- */
.article-layout {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: var(--space-10);
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
}
.article-main { min-width: 0; max-width: var(--max-width-content); }
.article-sidebar { font-family: var(--font-ui); }
.article-sidebar.sticky { position: sticky; top: calc(var(--nav-height) + var(--space-6)); align-self: start; }
@media (max-width: 768px) {
  .article-layout { grid-template-columns: 1fr; gap: var(--space-6); }
  .article-sidebar { display: none; }
}

/* --- Section spacing --- */
.section { padding: var(--space-16) 0; }
.section-tight { padding: var(--space-10) 0; }

/* --- Footer --- */
.site-footer {
  flex-shrink: 0;
  background: var(--color-surface-secondary);
  border-top: 1px solid var(--color-border-default);
  margin-top: var(--space-20);
  padding: var(--space-16) 0 var(--space-8);
}
.footer-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: var(--space-10);
  max-width: var(--max-width-wide); margin: 0 auto; padding: 0 var(--space-6);
}
.footer-col h4 {
  font-family: var(--font-ui); font-size: var(--text-xs);
  font-weight: var(--weight-medium); letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}
.footer-col ul { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-col a { font-family: var(--font-ui); font-size: var(--text-sm); color: var(--color-text-primary); }
.footer-legal {
  max-width: var(--max-width-wide); margin: var(--space-12) auto 0;
  padding: var(--space-6) var(--space-6) 0;
  border-top: 1px solid var(--color-border-default);
  font-family: var(--font-ui); font-size: var(--text-xs);
  color: var(--color-text-secondary);
  display: flex; flex-wrap: wrap; gap: var(--space-4); justify-content: space-between;
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-8); }
}