/*
Theme Name: CNN Style CMS Theme
Description: A professional WordPress theme inspired by CNN with advanced CMS features, mega menu, lazy loading, and fully responsive design.
Author: MGX Team
Version: 2.0.0
License: GPL v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: cnn-cms-theme
Tags: news, magazine, responsive, mega-menu, custom-header, custom-menu, featured-images, threaded-comments, translation-ready
*/

/* ================================
   CSS RESET & BASE STYLES
================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-red: #dc2626;
  --primary-blue: #1e40af;
  --dark-gray: #1f2937;
  --medium-gray: #6b7280;
  --light-gray: #f3f4f6;
  --white: #ffffff;
  --black: #000000;
  --border-color: #e5e7eb;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Playfair Display', Georgia, serif;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--dark-gray);
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

/* ================================
   HEADER & NAVIGATION
================================ */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-lg);
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 70px;
}

/* LOGO */
.site-branding {
  flex-shrink: 0;
}

.site-logo {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-red);
  letter-spacing: -0.025em;
  transition: var(--transition);
}

.site-logo:hover {
  color: var(--primary-blue);
  transform: scale(1.05);
}

.site-description {
  font-size: 0.875rem;
  color: var(--medium-gray);
  margin-top: 0.25rem;
}

/* NAVIGATION */
.main-navigation {
  flex: 1;
  display: flex;
  justify-content: center;
  position: relative;
}

.main-navigation ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 0;
}

.main-navigation li {
  position: relative;
}

.main-navigation > ul > li > a {
  display: block;
  padding: 1.5rem 1.25rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--dark-gray);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  transition: var(--transition);
  border-bottom: 3px solid transparent;
}

.main-navigation > ul > li > a:hover,
.main-navigation > ul > li.current-menu-item > a {
  color: var(--primary-red);
  border-bottom-color: var(--primary-red);
  background-color: rgba(220, 38, 38, 0.05);
}

/* MEGA MENU */
.main-navigation .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 800px;
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition);
  z-index: 999;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding: 2rem;
}

.main-navigation li:hover .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.main-navigation .sub-menu li {
  position: static;
}

.main-navigation .sub-menu a {
  display: block;
  padding: 0.75rem 0;
  color: var(--dark-gray);
  font-weight: 500;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--light-gray);
  transition: var(--transition);
}

.main-navigation .sub-menu a:hover {
  color: var(--primary-red);
  padding-left: 0.5rem;
}

.main-navigation .sub-menu .menu-item-has-children > a {
  font-weight: 600;
  color: var(--primary-blue);
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--primary-blue);
  margin-bottom: 1rem;
}

/* MOBILE MENU TOGGLE */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 4px;
  transition: var(--transition);
}

.menu-toggle:hover {
  background-color: var(--light-gray);
}

.menu-icon {
  font-size: 1.5rem;
  color: var(--dark-gray);
}

/* HEADER ACTIONS */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

.search-toggle-btn {
  background: none;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  transition: var(--transition);
}

.search-toggle-btn:hover {
  background-color: var(--light-gray);
  transform: scale(1.1);
}

.search-form-container {
  position: absolute;
  top: 100%;
  right: 1rem;
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  padding: 1rem;
  min-width: 300px;
}

.search-form-container input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 1rem;
  transition: var(--transition);
}

.search-form-container input:focus {
  outline: none;
  border-color: var(--primary-red);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

/* ================================
   BREAKING NEWS TICKER
================================ */
.breaking-news {
  background: linear-gradient(135deg, var(--primary-red), #ef4444);
  color: var(--white);
  padding: 0.75rem 0;
  overflow: hidden;
  position: relative;
}

.breaking-news::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0.1) 0%, transparent 50%, rgba(255,255,255,0.1) 100%);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.breaking-news-content {
  white-space: nowrap;
  animation: scroll-left 45s linear infinite;
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.025em;
}

@keyframes scroll-left {
  0% { transform: translateX(100%); }
  100% { transform: translateX(-100%); }
}

.breaking-news-content:hover {
  animation-play-state: paused;
}

/* ================================
   MAIN LAYOUT
================================ */
.site-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 3rem 1rem;
}

.content-area {
  display: grid;
  gap: 3rem;
  align-items: start;
}

/* Layout Classes */
.layout-right-sidebar .content-area {
  grid-template-columns: 1fr 350px;
}

.layout-left-sidebar .content-area {
  grid-template-columns: 350px 1fr;
}

.layout-no-sidebar .content-area {
  grid-template-columns: 1fr;
}

.layout-full-width .site-content {
  max-width: 100%;
  padding: 3rem 2rem;
}

/* ================================
   POST GRID & CARDS
================================ */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.post-card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
}

.post-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.post-card.featured {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.post-thumbnail {
  position: relative;
  height: 250px;
  overflow: hidden;
  background: var(--light-gray);
}

.post-card.featured .post-thumbnail {
  height: 100%;
}

.post-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.post-card:hover .post-thumbnail img {
  transform: scale(1.08);
}

.post-content {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.post-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--medium-gray);
}

.post-category {
  background: var(--primary-red);
  color: var(--white);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.post-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.3;
  margin: 0;
}

.post-card.featured .post-title {
  font-size: 2rem;
}

.post-title a {
  color: var(--dark-gray);
  transition: var(--transition);
}

.post-title a:hover {
  color: var(--primary-red);
}

.post-excerpt {
  color: var(--medium-gray);
  line-height: 1.7;
  flex-grow: 1;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.post-tags .tag {
  background: var(--light-gray);
  color: var(--medium-gray);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  transition: var(--transition);
}

.post-tags .tag:hover {
  background: var(--primary-blue);
  color: var(--white);
}

/* ================================
   LOAD MORE BUTTON
================================ */
.load-more-container {
  text-align: center;
  margin: 3rem 0;
}

.load-more-btn {
  background: linear-gradient(135deg, var(--primary-red), #ef4444);
  color: var(--white);
  border: none;
  padding: 1rem 2.5rem;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: var(--shadow);
}

.load-more-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.load-more-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ================================
   SIDEBAR
================================ */
.sidebar {
  background: var(--white);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow);
  height: fit-content;
  position: sticky;
  top: 100px;
}

.widget {
  margin-bottom: 2.5rem;
}

.widget:last-child {
  margin-bottom: 0;
}

.widget-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dark-gray);
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 3px solid var(--primary-red);
  position: relative;
}

.widget-title::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 50px;
  height: 3px;
  background: var(--primary-blue);
}

/* ================================
   FOOTER
================================ */
.site-footer {
  background: var(--dark-gray);
  color: var(--white);
  padding: 4rem 0 2rem;
  margin-top: 5rem;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-red), var(--primary-blue));
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
}

.footer-widget-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--white);
}

.footer-widget a {
  color: #d1d5db;
  transition: var(--transition);
}

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

/* ================================
   LAZY LOADING
================================ */
.lazy-image {
  position: relative;
  background: var(--light-gray);
  overflow: hidden;
}

.lazy-image.loading::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40px;
  height: 40px;
  margin: -20px 0 0 -20px;
  border: 3px solid var(--border-color);
  border-top-color: var(--primary-red);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.lazy-image img {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.lazy-image.loaded img {
  opacity: 1;
}

/* ================================
   RESPONSIVE DESIGN
================================ */
@media (max-width: 1200px) {
  .header-container {
    padding: 0 1.5rem;
  }
  
  .main-navigation .sub-menu {
    min-width: 600px;
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 992px) {
  .layout-right-sidebar .content-area,
  .layout-left-sidebar .content-area {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .post-card.featured {
    grid-column: span 1;
    display: block;
  }
  
  .post-card.featured .post-thumbnail {
    height: 250px;
  }
  
  .main-navigation .sub-menu {
    position: static;
    min-width: auto;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    border-radius: 0;
    display: none;
    grid-template-columns: 1fr;
    padding: 1rem 0;
    background: var(--light-gray);
  }
  
  .main-navigation li:hover .sub-menu {
    display: block;
  }
}

@media (max-width: 768px) {
  .site-logo {
    font-size: 2rem;
  }
  
  .header-container {
    flex-wrap: wrap;
    padding: 1rem;
  }
  
  .menu-toggle {
    display: block;
    order: 3;
  }
  
  .header-actions {
    order: 2;
  }
  
  .main-navigation {
    order: 4;
    width: 100%;
    margin-top: 1rem;
  }
  
  .main-navigation ul {
    flex-direction: column;
    width: 100%;
    display: none;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 1rem 0;
  }
  
  .main-navigation.toggled ul {
    display: flex;
  }
  
  .main-navigation > ul > li > a {
    padding: 1rem 1.5rem;
    border-bottom: none;
    border-left: 3px solid transparent;
  }
  
  .main-navigation > ul > li > a:hover,
  .main-navigation > ul > li.current-menu-item > a {
    border-left-color: var(--primary-red);
    border-bottom: none;
  }
  
  .post-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .site-content {
    padding: 2rem 1rem;
  }
  
  .sidebar {
    position: static;
  }
}

@media (max-width: 480px) {
  .site-logo {
    font-size: 1.75rem;
  }
  
  .breaking-news-content {
    font-size: 1rem;
  }
  
  .post-title {
    font-size: 1.25rem;
  }
  
  .post-content {
    padding: 1.5rem;
  }
  
  .search-form-container {
    right: 0;
    left: 0;
    margin: 0 1rem;
    min-width: auto;
  }
}

/* ================================
   UTILITY CLASSES
================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ================================
   PRINT STYLES
================================ */
@media print {
  .site-header,
  .sidebar,
  .site-footer,
  .load-more-container {
    display: none;
  }
  
  .content-area {
    grid-template-columns: 1fr;
  }
  
  .post-card {
    box-shadow: none;
    border: 1px solid var(--border-color);
    break-inside: avoid;
    margin-bottom: 2rem;
  }
}