/* ── Layout ──────────────────────────────────────────────────────────────── */

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

main {
  flex: 1;
  width: 100%;
}

/* ── Containers ──────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container--content {
  max-width: var(--content-width);
}

/* ── Header ──────────────────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  height: var(--header-height);
  background: var(--color-ink-blue);
  border-bottom: 3px solid var(--color-coral);
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
  gap: var(--space-8);
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}
.site-logo:hover { text-decoration: none; }
.site-logo__img { width: 44px; height: 44px; transition: transform var(--transition-normal); }
.site-logo:hover .site-logo__img { transform: rotate(-5deg) scale(1.05); }
.site-logo__text {
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--color-surface);
  line-height: 1.2;
  display: flex;
  flex-direction: column;
}
.site-logo__text span:last-child {
  font-size: var(--font-size-xs);
  font-weight: 400;
  color: var(--color-yellow);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Main nav */
.main-nav { display: flex; align-items: center; gap: var(--space-2); }

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  white-space: nowrap;
  transition: background var(--transition-fast), color var(--transition-fast);
  border: 1px solid transparent;
}
.nav-link:hover {
  background: rgba(255,255,255,0.12);
  color: var(--color-yellow);
  text-decoration: none;
}
.nav-link.active {
  background: var(--color-coral);
  color: #fff;
  border-color: rgba(255,255,255,0.2);
}
.nav-link.active:hover { background: var(--color-coral-dark); color: #fff; }
.nav-link__icon { font-size: 1.1em; line-height: 1; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav dropdown */
.nav-mobile {
  display: none;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--color-ink-blue);
  border-bottom: 3px solid var(--color-coral);
  padding: var(--space-4) var(--space-6);
  flex-direction: column;
  gap: var(--space-2);
  z-index: var(--z-dropdown);
  box-shadow: var(--shadow-lg);
}
.nav-mobile.open { display: flex; }
.nav-mobile .nav-link { padding: var(--space-3) var(--space-4); }

/* ── Footer ──────────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--color-ink-blue);
  color: rgba(255,255,255,0.7);
  padding: var(--space-12) 0 var(--space-8);
  margin-top: auto;
  border-top: 3px solid var(--color-yellow);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-8);
}

.footer-section h3 {
  color: var(--color-yellow);
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
  border-bottom: none;
  display: block;
}

.footer-section ul { list-style: none; padding: 0; margin: 0; }
.footer-section li { margin-bottom: var(--space-2); }
.footer-section a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}
.footer-section a:hover { color: var(--color-coral); text-decoration: none; }

.footer-bottom {
  max-width: var(--max-width);
  margin: var(--space-8) auto 0;
  padding: var(--space-6) var(--space-6) 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.footer-bottom p { color: rgba(255,255,255,0.45); font-size: var(--font-size-xs); margin: 0; max-width: none; }

/* ── Page content area ────────────────────────────────────────────────────── */
.page-content {
  padding: var(--space-6) 0 var(--space-16);
}

.page-header {
  padding: var(--space-3) 0 var(--space-5);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}

.page-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  margin-bottom: 0;
  max-width: 75ch;
}

.page-title {
  background: linear-gradient(135deg, var(--color-ink-blue) 0%, var(--color-blue-mid) 50%, var(--color-coral) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-4);
}

.content-body { width: 100%; }

/* Page nav (prev/next) */
.page-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 2px solid var(--color-border);
}

.page-nav__link {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  text-decoration: none;
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  max-width: 48%;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.page-nav__link:hover {
  border-color: var(--color-coral);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  text-decoration: none;
}
.page-nav__label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}
.page-nav__title { font-weight: 600; color: var(--color-ink-blue); font-size: var(--font-size-sm); }
.page-nav__link--next { margin-left: auto; text-align: right; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .site-header { position: sticky; }

  .header-inner { padding: 0 var(--space-4); }
  .site-logo__text span:last-child { display: none; }

  .page-content { padding: var(--space-6) 0 var(--space-10); }
  .container { padding: 0 var(--space-4); }

  .page-nav { flex-direction: column; }
  .page-nav__link { max-width: 100%; }
  .page-nav__link--next { text-align: left; }

  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}