/* ============================================================
   LAYOUT — Containers, site shell, page structure
   ============================================================ */

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 5vw, 2.5rem);
}

.container--narrow {
  max-width: 860px;
}

.container--wide {
  max-width: 1400px;
}

/* --- Site Shell --- */
.site-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-main {
  flex: 1;
  padding-block: var(--space-10) var(--space-16);
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition), box-shadow var(--transition);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  height: 64px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  flex-shrink: 0;
}

.site-logo__text {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  color: var(--color-primary);
  line-height: 1;
  letter-spacing: -0.02em;
}

.site-logo__accent {
  color: var(--color-accent);
}

/* --- Primary Navigation --- */
.site-nav {
  flex: 1;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  flex-wrap: wrap;
}

.site-nav__link {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
}

.site-nav__link:hover,
.site-nav__link--active {
  color: var(--color-primary);
  background: var(--color-primary-pale);
}

.site-nav__link--active {
  font-weight: 600;
}

/* --- Header Actions --- */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* --- Mobile Nav --- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: background-color var(--transition-fast);
}

.nav-toggle:hover { background: var(--color-bg-alt); }

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .site-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: var(--space-6) clamp(1rem, 5vw, 2.5rem);
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform var(--transition);
    z-index: 99;
  }

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

  .site-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }

  .site-nav__link {
    font-size: var(--text-lg);
    padding: var(--space-3) var(--space-4);
    width: 100%;
  }
}

/* --- Footer --- */
.site-footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.85);
  padding-block: var(--space-16) var(--space-8);
}

.site-footer a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-brand__logo {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  color: white;
  margin-bottom: var(--space-4);
  display: block;
  text-decoration: none;
}

.footer-brand__logo:hover { color: var(--color-accent); }

.footer-brand__desc {
  font-size: var(--text-sm);
  line-height: 1.7;
  max-width: 36ch;
  margin-bottom: var(--space-6);
}

.footer-heading {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--space-4);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--text-sm);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: var(--space-8);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.5);
}

.footer-disclaimer {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.45);
  margin-top: var(--space-6);
  line-height: 1.6;
  max-width: 70ch;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

  .footer-brand { grid-column: 1 / -1; }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* --- Page Layouts --- */
.page-with-sidebar {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: var(--space-12);
  align-items: start;
}

@media (max-width: 1024px) {
  .page-with-sidebar {
    grid-template-columns: 1fr;
  }

  .sidebar { display: none; }
}

/* --- Archive / Blog Index Layout --- */
.archive-header {
  margin-bottom: var(--space-10);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.archive-title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
  color: var(--color-primary);
}

.archive-desc {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 60ch;
  line-height: 1.6;
}

/* --- Post Grid --- */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  gap: var(--space-8);
}

.post-grid--featured {
  grid-template-columns: 1fr;
}

.post-grid--featured .post-card:first-child {
  grid-column: 1 / -1;
}

/* --- Breadcrumb --- */
.breadcrumb {
  margin-bottom: var(--space-6);
}

.breadcrumb__list {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.breadcrumb__item a {
  color: var(--color-text-muted);
  text-decoration: none;
}

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

.breadcrumb__item--active { color: var(--color-text); }

.breadcrumb__sep { color: var(--color-border); user-select: none; }

/* --- Pagination --- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-12);
  flex-wrap: wrap;
}

.pagination__page,
.pagination__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  transition: all var(--transition-fast);
}

.pagination__page:hover,
.pagination__btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-pale);
}

.pagination__page--active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
  cursor: default;
}

.pagination__ellipsis {
  color: var(--color-text-muted);
  padding: 0 var(--space-2);
}

/* --- Post Navigation (prev/next) --- */
.post-pagination {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.post-pagination__label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.post-pagination__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
  line-height: 1.4;
}

.post-pagination__link:hover { text-decoration: underline; }

.post-pagination__next { text-align: right; }

@media (max-width: 600px) {
  .post-pagination { grid-template-columns: 1fr; }
  .post-pagination__next { text-align: left; }
}