/* ============================================
   LINKS MAGAZINE — LAYOUT
   layout.css
   ============================================ */

/* ----------------------------------------
   CONTAINERS
   ---------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width-xl);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.container-article {
  width: 100%;
  max-width: var(--max-width-article);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

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

/* ----------------------------------------
   SECTIONS
   ---------------------------------------- */
.section {
  padding-top: var(--space-20);
  padding-bottom: var(--space-20);
}

.section--sm {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

.section--lg {
  padding-top: var(--space-32);
  padding-bottom: var(--space-32);
}

.section-cream {
  background-color: var(--color-cream);
}

.section-green {
  background-color: var(--color-green);
  color: var(--color-white);
}

.section-dark {
  background-color: var(--color-black);
  color: var(--color-white);
}

/* ----------------------------------------
   GRID SYSTEMS
   ---------------------------------------- */
.grid-magazine {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-8);
}

.grid-magazine--reverse {
  grid-template-columns: 1fr 2fr;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

/* Section header utility */
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--space-10);
  gap: var(--space-6);
}

.section-header__text {
  flex: 1;
}

/* ----------------------------------------
   TOP BAR
   ---------------------------------------- */
.top-bar {
  background-color: var(--color-cream);
  border-bottom: 1px solid var(--color-gray-300);
  padding: var(--space-2) 0;
  transition: opacity var(--transition-base), max-height var(--transition-base);
}

.top-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.top-bar__issue {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}

.top-bar__subscribe {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-green);
  transition: color var(--transition-fast);
}

.top-bar__subscribe:hover {
  color: var(--color-green-light);
}

/* ----------------------------------------
   MAIN NAVIGATION
   ---------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background-color: var(--color-white);
  transition: box-shadow var(--transition-base);
}

.site-header.is-scrolled {
  box-shadow: 0 1px 0 var(--color-gray-300), var(--shadow-sm);
}

.site-header.is-scrolled .top-bar {
  display: none;
}

.main-nav {
  border-bottom: 1px solid var(--color-gray-300);
  padding: var(--space-4) 0;
}

.main-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

/* Logo */
.site-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-wordmark {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: 300;
  font-style: italic;
  line-height: 1;
  color: var(--color-black);
  letter-spacing: -0.02em;
  transition: color var(--transition-fast);
}

.site-logo:hover .logo-wordmark {
  color: var(--color-green);
}

.logo-sub {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--color-text-muted);
  margin-top: -4px;
}

/* Nav links groups */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text);
  padding: var(--space-1) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-green);
  transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--color-green);
}

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

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

.nav-search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--color-text);
  border-radius: var(--radius-full);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-search-btn:hover {
  color: var(--color-green);
  background-color: var(--color-gray-100);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.nav-hamburger:hover {
  background-color: var(--color-gray-100);
}

.hamburger-line {
  display: block;
  width: 24px;
  height: 1.5px;
  background-color: var(--color-text);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-hamburger[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-hamburger[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.nav-hamburger[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile sidebar overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: calc(var(--z-nav) - 1);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.nav-overlay.is-visible {
  opacity: 1;
}

/* Mobile sidebar */
.nav-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  width: min(320px, 90vw);
  height: 100vh;
  background-color: var(--color-white);
  z-index: var(--z-overlay);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

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

.nav-sidebar__close {
  align-self: flex-end;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  margin-bottom: var(--space-6);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
  color: var(--color-text);
}

.nav-sidebar__close:hover {
  background-color: var(--color-gray-100);
}

.nav-sidebar__logo {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-style: italic;
  font-weight: 300;
  color: var(--color-black);
  display: block;
  margin-bottom: var(--space-8);
}

.nav-sidebar__nav {
  display: flex;
  flex-direction: column;
  gap: 0;
  flex: 1;
}

.sidebar-link {
  font-family: var(--font-ui);
  font-size: var(--text-base);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-gray-100);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.sidebar-link:hover {
  color: var(--color-green);
  padding-left: var(--space-2);
}

.sidebar-subscribe {
  margin-top: var(--space-8);
  width: 100%;
  justify-content: center;
}

/* ----------------------------------------
   FOOTER
   ---------------------------------------- */
.site-footer {
  background-color: var(--color-black);
  color: var(--color-white);
  padding-top: var(--space-20);
  padding-bottom: 0;
  border-top: 3px solid var(--color-green);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
  gap: var(--space-12);
  padding-bottom: var(--space-16);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-style: italic;
  font-weight: 300;
  color: var(--color-white);
  line-height: 1;
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
  transition: color var(--transition-fast);
}

.footer-logo:hover {
  color: var(--color-gold);
}

.footer-tagline {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-gold);
  margin-bottom: var(--space-4);
  max-width: none;
}

.footer-desc {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  max-width: 280px;
}

.footer-heading {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-gold);
  margin-bottom: var(--space-5);
}

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

.footer-links a {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-subscribe-text {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
  line-height: 1.65;
  margin-bottom: var(--space-5);
  max-width: none;
}

.footer-subscribe-btn {
  margin-bottom: var(--space-6);
}

.footer-social {
  display: flex;
  gap: var(--space-4);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-full);
  color: rgba(255,255,255,0.6);
  font-size: var(--text-sm);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.social-link:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) 0;
  gap: var(--space-4);
}

.footer-bottom p {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.35);
  max-width: none;
}

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

.footer-legal a {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.35);
  transition: color var(--transition-fast);
}

.footer-legal a:hover {
  color: rgba(255,255,255,0.7);
}

/* ----------------------------------------
   RESPONSIVE — 1024px
   ---------------------------------------- */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-10);
  }

  .nav-links {
    gap: var(--space-4);
  }
}

/* ----------------------------------------
   RESPONSIVE — 768px
   ---------------------------------------- */
@media (max-width: 768px) {
  .container {
    padding-left: var(--space-5);
    padding-right: var(--space-5);
  }

  .section {
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
  }

  .section--lg {
    padding-top: var(--space-20);
    padding-bottom: var(--space-20);
  }

  .grid-magazine,
  .grid-magazine--reverse,
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Hide desktop nav links, show hamburger */
  .nav-links,
  .nav-actions {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  /* Mobile: show overlay + sidebar when active */
  .nav-overlay {
    display: block;
  }

  .logo-wordmark {
    font-size: var(--text-4xl);
  }

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .footer-legal {
    flex-wrap: wrap;
    gap: var(--space-3);
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .top-bar__issue {
    display: none;
  }
}

@media (max-width: 480px) {
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .subscribe-form__inner {
    flex-direction: column;
  }

  .subscribe-form__btn {
    width: 100%;
  }
}