/* Header layout */
.dr-header {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.dr-header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dr-header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.dr-header-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--logo-w);
  height: var(--logo-h);
}

.dr-header-title {
  font-family: var(--font-secondary);
  font-size: var(--font-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

/* Desktop navigation */
.dr-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.dr-nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.dr-nav-link {
  font-family: var(--font-primary);
  font-size: var(--font-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  text-decoration: none;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: var(--transition-fast);
}

.dr-nav-link:hover,
.dr-nav-link:focus-visible {
  color: var(--color-primary-dark);
  border-bottom-color: var(--color-primary);
}

/* Burger button */
.dr-burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--border-radius-full);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
  cursor: pointer;
  transition: var(--transition-fast);
}

.dr-burger-line {
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: var(--transition-fast);
}

.dr-burger-line + .dr-burger-line {
  margin-top: 4px;
}

.dr-header.dr-open .dr-burger {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary);
}

.dr-header.dr-open .dr-burger-line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.dr-header.dr-open .dr-burger-line:nth-child(2) {
  opacity: 0;
}

.dr-header.dr-open .dr-burger-line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile menu */
.dr-mobile-menu {
  display: none;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg);
}

.dr-header.dr-open + .dr-mobile-menu {
  display: block;
}

.dr-mobile-menu-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-sm) var(--container-pad) var(--space-md);
}

.dr-mobile-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.dr-mobile-nav-link {
  display: block;
  font-family: var(--font-primary);
  font-size: var(--font-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  text-decoration: none;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.dr-mobile-nav-link:hover,
.dr-mobile-nav-link:focus-visible {
  color: var(--color-primary-dark);
}

/* Footer */
.dr-footer {
  background-color: var(--color-neutral-900);
  color: var(--color-neutral-100);
  padding: var(--space-2xl) var(--container-pad) var(--space-xl);
  font-family: var(--font-primary);
}

.dr-footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
}

.dr-footer-top {
  display: grid;
  grid-template-columns: minmax(0, 2fr);
  gap: var(--space-xl);
  border-bottom: 1px solid var(--color-neutral-800);
  padding-bottom: var(--space-xl);
}

.dr-footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.dr-footer-logo {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
}

.dr-footer-tagline {
  margin: 0;
  font-size: var(--font-sm);
  color: var(--color-neutral-300);
  max-width: 30rem;
}

.dr-footer-heading {
  margin: 0 0 var(--space-sm);
  font-family: var(--font-secondary);
  font-size: var(--font-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-neutral-300);
}

.dr-footer-nav,
.dr-footer-legal,
.dr-footer-contact {
  font-size: var(--font-sm);
}

.dr-footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.dr-footer-item {
  line-height: var(--lh-relaxed);
}

.dr-footer-link {
  color: var(--color-neutral-100);
  text-decoration: none;
  transition: var(--transition-fast);
}

.dr-footer-link:hover,
.dr-footer-link:focus-visible {
  color: var(--color-primary-light);
}

.dr-footer-contact-block {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.dr-footer-contact-line {
  margin: 0;
  color: var(--color-neutral-200);
}

.dr-footer-contact-label {
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-100);
}

.dr-footer-contact-address {
  max-width: 20rem;
}

.dr-footer-bottom {
  padding-top: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.dr-footer-disclaimer {
  margin: 0;
  font-size: var(--font-xs);
  color: var(--color-neutral-400);
  line-height: var(--lh-relaxed);
}

.dr-footer-meta {
  margin: 0;
  font-size: var(--font-xs);
  color: var(--color-neutral-500);
}

/* Responsive rules */
@media (max-width: 767px) {
  .dr-nav {
    display: none;
  }

  .dr-burger {
    display: inline-flex;
  }

  .dr-footer-top {
    grid-template-columns: minmax(0, 1fr);
  }
}

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

  .dr-burger {
    display: none;
  }

  .dr-mobile-menu {
    display: none !important;
  }

  .dr-footer-top {
    grid-template-columns: minmax(0, 2fr) repeat(3, minmax(0, 1fr));
  }

  .dr-footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}