/* ========================================
   LAYOUT.CSS - The Verge Style Layout
   ======================================== */

/* Header - Sticky Dark Bar */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--gray-900);
  height: var(--header-height);
  border-bottom: var(--border-thick) solid var(--primary);
}

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

/* Logo - The Verge Style */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.logo img {
  height: 36px;
}

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

/* Navigation - Horizontal Tabs */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex: 1;
  justify-content: center;
}

.nav-link {
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--gray-300);
  padding: var(--space-md) 0;
  position: relative;
  transition: color var(--transition);
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: var(--border-thick);
  background: var(--primary);
  transition: width var(--transition);
}

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

/* Nav Item with Dropdown */
.nav-item {
  position: relative;
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: var(--white);
  border: var(--border-thick) solid var(--gray-900);
  padding: var(--space-sm) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 100;
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown a {
  display: block;
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--gray-700);
  transition: all var(--transition);
}

.nav-dropdown a:hover {
  background: var(--gray-100);
  color: var(--primary);
}

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

.header-actions .btn-icon {
  background: transparent;
  border-color: transparent;
  color: var(--gray-300);
}

.header-actions .btn-icon:hover {
  color: var(--white);
  background: rgba(255,255,255,0.1);
}

/* Theme Toggle */
.theme-toggle {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--gray-300);
  cursor: pointer;
  transition: color var(--transition);
}

.theme-toggle:hover {
  color: var(--white);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 10px;
  cursor: pointer;
  background: transparent;
  border: none;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 3px;
  background: var(--white);
  transition: all var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* Mobile Navigation - Full Screen Overlay */
.mobile-nav {
  position: fixed;
  inset: 0;
  top: var(--header-height);
  background: var(--gray-900);
  z-index: 999;
  padding: var(--space-xl);
  transform: translateX(-100%);
  transition: transform var(--transition-slow);
  overflow-y: auto;
}

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

.mobile-nav-link {
  display: block;
  padding: var(--space-lg) 0;
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--white);
  border-bottom: 1px solid var(--gray-700);
  transition: color var(--transition);
}

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

.mobile-nav-actions {
  margin-top: var(--space-xl);
  display: flex;
  gap: var(--space-md);
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .mobile-nav {
    display: block;
  }
}

/* Search Container */
.search-container {
  position: relative;
}

.search-toggle {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--gray-300);
  cursor: pointer;
  transition: color var(--transition);
}

.search-toggle:hover {
  color: var(--white);
}

.search-overlay {
  position: fixed;
  inset: 0;
  top: var(--header-height);
  background: rgba(0,0,0,0.9);
  z-index: 998;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: var(--space-3xl);
}

.search-overlay.active {
  display: flex;
}

.search-form-large {
  width: 100%;
  max-width: 700px;
  padding: 0 var(--space-lg);
}

.search-form-large input {
  width: 100%;
  padding: var(--space-lg) var(--space-xl);
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  background: transparent;
  border: none;
  border-bottom: var(--border-thick) solid var(--white);
  color: var(--white);
  outline: none;
}

.search-form-large input::placeholder {
  color: var(--gray-500);
}

.search-suggestions {
  margin-top: var(--space-xl);
  max-height: 400px;
  overflow-y: auto;
}

.suggestion-item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--border-radius);
  transition: background var(--transition);
}

.suggestion-item:hover {
  background: rgba(255,255,255,0.1);
}

.suggestion-item img {
  width: 60px;
  height: 60px;
  object-fit: cover;
}

.suggestion-info h4 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--space-xs);
}

.suggestion-info span {
  font-size: var(--font-size-sm);
  color: var(--gray-400);
}

/* Footer - The Verge Dark Style */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: var(--space-4xl) 0 var(--space-xl);
  margin-top: var(--space-4xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

.footer-about {
  max-width: 320px;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--white);
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}

.footer-about p {
  color: var(--gray-400);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

.footer-title {
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--white);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: var(--border-thick) solid var(--primary);
  display: inline-block;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--gray-400);
  font-size: var(--font-size-sm);
  transition: color var(--transition);
}

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

.footer-social {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--gray-800);
  border: 2px solid var(--gray-700);
  color: var(--gray-400);
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--gray-700);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--gray-500);
}

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

.footer-bottom-links a {
  color: var(--gray-500);
  transition: color var(--transition);
}

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

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-about {
    max-width: 100%;
  }
  
  .footer-title {
    display: block;
  }
  
  .footer-social {
    justify-content: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

/* ========================================
   HOMEPAGE GRID SYSTEM
   ======================================== */

/* Hero Grid - Top Stories */
.hero-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  grid-template-rows: repeat(2, 1fr);
  gap: var(--space-md);
  min-height: 600px;
  margin-bottom: var(--space-2xl);
}

.hero-grid .card-hero {
  grid-row: span 2;
}

.hero-grid .card:not(.card-hero) {
  min-height: 200px;
}

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    min-height: auto;
  }
  
  .hero-grid .card-hero {
    grid-row: span 1;
    min-height: 400px;
  }
}

@media (max-width: 768px) {
  .hero-grid .card-hero {
    min-height: 300px;
  }
}

/* Storystream Section */
.storystream {
  border-top: var(--border-thick) solid var(--gray-900);
  padding-top: var(--space-xl);
}

.storystream-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.storystream-title {
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-900);
}

.storystream-live {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xs);
  color: var(--gray-500);
}

.storystream-live::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.storystream-list {
  max-height: 600px;
  overflow-y: auto;
}

/* Category Section Grid */
.category-section {
  margin-bottom: var(--space-3xl);
}

.category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: var(--border-thick) solid var(--gray-900);
}

.category-title {
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-900);
}

.category-link {
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--primary);
}

.category-link:hover {
  text-decoration: underline;
}

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

@media (max-width: 1200px) {
  .articles-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .articles-grid {
    grid-template-columns: 1fr;
  }
}

/* Sidebar Layout */
.content-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 350px;
  gap: var(--space-2xl);
}

.sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--space-lg));
  height: fit-content;
}

.sidebar-section {
  background: var(--gray-50);
  border: var(--border-thick) solid var(--gray-200);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.sidebar-title {
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-900);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--primary);
}

@media (max-width: 1024px) {
  .content-with-sidebar {
    grid-template-columns: 1fr;
  }
  
  .sidebar {
    position: static;
  }
}

/* Comment Section */
.comments-section {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: var(--border-thick) solid var(--gray-200);
}

.comments-section h3 {
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-lg);
}

.comment-form {
  background: var(--gray-50);
  border: var(--border-thick) solid var(--gray-200);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.comment-item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--gray-200);
}

.comment-item:last-child {
  border-bottom: none;
}

.comment-avatar img {
  width: 48px;
  height: 48px;
  object-fit: cover;
}

.comment-content {
  flex: 1;
}

.comment-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.comment-author {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--gray-900);
}

.comment-date {
  font-size: var(--font-size-xs);
  color: var(--gray-500);
}

.comment-text {
  color: var(--gray-600);
  line-height: 1.6;
}

.comment-actions {
  margin-top: var(--space-sm);
  display: flex;
  gap: var(--space-md);
}

.btn-text {
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  color: var(--gray-500);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition);
}

.btn-text:hover {
  color: var(--primary);
}

.replies {
  margin-top: var(--space-md);
  padding-left: var(--space-xl);
  border-left: var(--border-thick) solid var(--gray-200);
}

/* Dark Mode Overrides */
body.theme-dark .header {
  background: var(--black);
  border-bottom-color: var(--primary);
}

body.theme-dark .mobile-nav {
  background: var(--black);
}

body.theme-dark .nav-dropdown {
  background: var(--gray-800);
  border-color: var(--gray-700);
}

body.theme-dark .nav-dropdown a {
  color: var(--gray-300);
}

body.theme-dark .nav-dropdown a:hover {
  background: var(--gray-700);
  color: var(--white);
}

body.theme-dark .storystream {
  border-top-color: var(--gray-700);
}

body.theme-dark .category-header {
  border-bottom-color: var(--gray-700);
}

body.theme-dark .sidebar-section {
  background: var(--gray-800);
  border-color: var(--gray-700);
}

body.theme-dark .comment-form {
  background: var(--gray-800);
  border-color: var(--gray-700);
}

body.theme-dark .comment-item {
  border-bottom-color: var(--gray-700);
}

body.theme-dark .replies {
  border-left-color: var(--gray-700);
}