/* ==========================================================================
   Merrowdain - Layout (Header, Navigation, Mobile Menu, Footer)
   ========================================================================== */

/* Header */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: var(--color-surface-translucent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-header);
  transition: height var(--transition-normal), background-color var(--transition-normal), box-shadow var(--transition-normal);
}

.site-header.scrolled {
  height: var(--header-height-scrolled);
  background-color: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Brand Logo */
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.brand-logo-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  transition: transform var(--transition-normal);
}

.brand-logo:hover .brand-logo-icon {
  transform: rotate(8deg) scale(1.05);
}

.brand-logo .logo-accent {
  color: var(--color-secondary);
  font-style: italic;
  font-weight: 400;
}

/* Desktop Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-main);
  padding: var(--space-2) var(--space-1);
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link.active {
  color: var(--color-primary-dark);
  font-weight: 600;
}

.nav-badge-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  background-color: var(--color-secondary);
  color: var(--color-surface);
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
  margin-left: 4px;
}

/* Header Action */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Mobile Toggle */
.mobile-nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  color: var(--color-primary-dark);
  background: transparent;
  font-size: 1.25rem;
}

.mobile-nav-toggle:hover {
  background-color: var(--color-primary-subtle);
}

/* Mobile Drawer Overlay */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(41, 37, 42, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
  z-index: calc(var(--z-drawer) - 1);
}

.mobile-menu-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* Mobile Drawer Content */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: -320px;
  width: 320px;
  max-width: 85vw;
  height: 100%;
  background-color: var(--color-surface);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-drawer);
  display: flex;
  flex-direction: column;
  padding: var(--space-8) var(--space-6);
  transition: right var(--transition-smooth);
  overflow-y: auto;
}

.mobile-nav-drawer.open {
  right: 0;
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}

.mobile-drawer-close {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 1.2rem;
}

.mobile-drawer-close:hover {
  background-color: var(--color-accent-soft);
  color: var(--color-primary-dark);
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-main);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background-color: var(--color-primary-subtle);
  color: var(--color-primary-dark);
  font-weight: 600;
}

.mobile-drawer-cta {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* Footer */
.site-footer {
  background-color: var(--color-primary-dark);
  color: var(--color-accent);
  padding-top: var(--space-20);
  padding-bottom: var(--space-10);
  border-top: 1px solid rgba(233, 200, 208, 0.15);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-16);
}

.footer-brand .brand-logo {
  color: var(--color-text-inverse);
  margin-bottom: var(--space-4);
}

.footer-tagline {
  font-size: var(--text-md);
  color: var(--color-accent);
  margin-bottom: var(--space-4);
  max-width: 320px;
  line-height: var(--leading-relaxed);
  font-family: var(--font-serif);
  font-style: italic;
}

.footer-bio {
  font-size: var(--text-sm);
  color: rgba(250, 247, 245, 0.72);
  max-width: 360px;
  line-height: var(--leading-relaxed);
}

.footer-col-title {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-5);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links a {
  font-size: var(--text-sm);
  color: rgba(250, 247, 245, 0.76);
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: inline-block;
}

.footer-links a:hover {
  color: var(--color-text-inverse);
  transform: translateX(3px);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid rgba(233, 200, 208, 0.12);
  font-size: var(--text-xs);
  color: rgba(250, 247, 245, 0.6);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-6);
}

.footer-bottom-links a {
  color: rgba(250, 247, 245, 0.6);
}

.footer-bottom-links a:hover {
  color: var(--color-text-inverse);
}