/* Layout: Header, Mobile Drawer, Containers, Footer */

/* Site Containers */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.container-reading {
  width: 100%;
  max-width: var(--container-reading);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.main-content {
  flex: 1 0 auto;
  padding-bottom: var(--space-12);
}

/* Site Header (Mobile First) */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(251, 251, 249, 0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

/* Logo */
.site-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-logo:hover {
  text-decoration: none;
  color: var(--color-primary-hover);
}

.logo-leaf {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
}

/* Desktop Navigation (Hidden on Mobile) */
.desktop-nav {
  display: none;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-main);
  text-decoration: none;
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
  text-decoration: none;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
}

/* Header Actions (Search & Mobile Toggle) */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--min-touch-target);
  height: var(--min-touch-target);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  color: var(--color-text-main);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.icon-btn:hover {
  background-color: var(--color-bg-alt);
  color: var(--color-primary);
}

.icon-btn svg {
  width: 20px;
  height: 20px;
}

/* Mobile Drawer Navigation */
.mobile-drawer-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(25, 32, 29, 0.45);
  backdrop-filter: blur(4px);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.mobile-drawer-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(320px, 85vw);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-drawer);
  z-index: 201;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition-normal) cubic-bezier(0.16, 1, 0.3, 1);
  padding: var(--space-5);
  overflow-y: auto;
}

.mobile-drawer.is-active {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-4);
}

.drawer-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.drawer-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--min-touch-target);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-main);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.drawer-link:hover, .drawer-link.active {
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  text-decoration: none;
}

.drawer-footer {
  margin-top: auto;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

/* Site Footer */
.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-12);
  padding-bottom: var(--space-8);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}

.footer-brand p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 340px;
  margin-top: var(--space-2);
}

.footer-heading {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-main);
  margin-bottom: var(--space-4);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  display: inline-block;
  padding: 2px 0;
}

.footer-links a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  align-items: center;
  text-align: center;
  font-size: var(--text-xs);
}

/* Breakpoint Scaling */
@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

@media (min-width: 992px) {
  .desktop-nav {
    display: flex;
  }

  .mobile-menu-btn {
    display: none;
  }
}