/* HistoryScope — layout.css : structural layout, grid, breakpoints */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 16px;
}

@media (min-width: 600px) {
  .container { padding: 0 24px; }
}

@media (min-width: 1024px) {
  .container { padding: 0 32px; }
}

/* Header */

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 20px;
  color: var(--color-text);
  text-decoration: none;
}

.site-logo svg { width: 32px; height: 32px; }

.main-nav {
  display: none;
}

.main-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover, .main-nav a:focus, .main-nav a[aria-current="page"] {
  border-bottom-color: var(--color-terracotta);
  color: var(--color-terracotta);
}

@media (min-width: 900px) {
  .main-nav { display: block; }
  .nav-toggle { display: none; }
}

.nav-toggle {
  background: var(--color-terracotta);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-weight: 600;
  font-size: 15px;
}

.mobile-nav {
  display: none;
  border-top: 1px solid var(--color-border);
  padding: 10px 0 16px;
}

.mobile-nav.is-open { display: block; }

.mobile-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav a {
  display: block;
  padding: 10px 4px;
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 900px) {
  .mobile-nav { display: none !important; }
}

/* Main content spacing */

main { display: block; }

.page-hero {
  padding: 48px 0 32px;
  position: relative;
  overflow: hidden;
}

.page-hero__eyebrow {
  display: inline-block;
  margin-bottom: 10px;
}

.section {
  padding: 40px 0;
}

.section--tight { padding: 24px 0; }

.prose { max-width: 72ch; }

.grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}

@media (min-width: 600px) {
  .grid--2 { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 900px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

/* Comparator layout */

.comparator {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.comparator__panels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.comparator__panels[data-mode="compare"] {
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .comparator__panels[data-mode="compare"] {
    grid-template-columns: 1fr 1fr;
  }
}

/* Timeline strip */

.timeline-strip {
  display: flex;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 20px 0;
  box-shadow: var(--shadow-card);
}

.timeline-strip__seg {
  flex: 1;
  padding: 10px 6px;
  text-align: center;
  color: #fff;
  font-size: 13px;
}

/* Footer */

.site-footer {
  background: var(--color-text);
  color: var(--color-bg);
  padding: 40px 0 24px;
  margin-top: 48px;
}

.site-footer a { color: var(--color-bg); }

.footer-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}

@media (min-width: 700px) {
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
}

.footer-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav li { margin-bottom: 6px; }

.footer-bottom {
  border-top: 1px solid rgba(242,233,220,0.2);
  margin-top: 24px;
  padding-top: 16px;
  font-size: 13px;
  opacity: 0.8;
}

@media (max-width: 319px) {
  .container { padding: 0 12px; }
}