/* =====================================================
   PULSE - Internet Marketing News
   Main Stylesheet
   ===================================================== */

/* =====================================================
   CSS Custom Properties
   ===================================================== */
:root {
  /* Colors */
  --blue: #0066FF;
  --blue-dark: #0052CC;
  --blue-light: #3385FF;
  --red: #FF3333;
  --red-dark: #CC2929;
  --yellow: #FFEA00;
  --yellow-dark: #E6D400;
  --green: #00CC66;
  --purple: #9933FF;
  --orange: #FF6600;

  --black: #0A0A0A;
  --gray-900: #171717;
  --gray-800: #262626;
  --gray-700: #3D3D3D;
  --gray-600: #525252;
  --gray-500: #737373;
  --gray-400: #A3A3A3;
  --gray-300: #D4D4D4;
  --gray-200: #E5E5E5;
  --gray-100: #F5F5F5;
  --white: #FFFFFF;

  /* Category Gradients */
  --seo-gradient: linear-gradient(135deg, #0066FF, #00AAFF);
  --social-gradient: linear-gradient(135deg, #FF3366, #FF66B2);
  --content-gradient: linear-gradient(135deg, #00CC88, #00FFAA);
  --email-gradient: linear-gradient(135deg, #FF6600, #FFAA00);
  --analytics-gradient: linear-gradient(135deg, #9933FF, #CC66FF);
  --ppc-gradient: linear-gradient(135deg, #333333, #666666);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Lora', Georgia, 'Times New Roman', serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 50px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);

  /* Layout */
  --max-width: 1600px;
  --header-height: 64px;
  --ticker-height: 44px;
}

/* =====================================================
   Base Styles
   ===================================================== */
body {
  font-family: var(--font-sans);
  background-color: var(--white);
  color: var(--black);
  overflow-x: hidden;
}

/* =====================================================
   Accessibility - Skip Link
   ===================================================== */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--blue);
  color: var(--white);
  padding: 1rem 2rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius-md);
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 1rem;
  outline: 3px solid var(--yellow);
  outline-offset: 2px;
}

/* =====================================================
   Accessibility - Focus Indicators
   ===================================================== */
:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

/* Dark backgrounds need light focus indicator */
.header *:focus-visible,
.trending-section *:focus-visible,
.footer *:focus-visible {
  outline-color: var(--yellow);
}

/* Remove outline for mouse users, keep for keyboard */
:focus:not(:focus-visible) {
  outline: none;
}

/* Enhanced focus for interactive elements */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Card focus state */
.card:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 4px;
}

/* =====================================================
   Ticker
   ===================================================== */
.ticker {
  background: var(--red-dark); /* Darker red for WCAG AA contrast (4.58:1 with white) */
  color: var(--white);
  padding: 0.75rem 0;
  position: sticky;
  top: 0;
  z-index: 200;
  overflow: hidden;
}

.ticker-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.ticker-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--white);
  color: var(--red);
  padding: 0.25rem 0.75rem;
  font-size: 0.6875rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.ticker-dot {
  width: 6px;
  height: 6px;
  background: var(--red);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.ticker-content {
  display: flex;
  gap: 3rem;
  white-space: nowrap;
  animation: ticker 40s linear infinite;
}

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

.ticker-item {
  font-size: 0.875rem;
  font-weight: 700; /* Increased weight for better legibility */
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.ticker-item:hover {
  opacity: 0.8;
}

.ticker-item::before {
  content: "•";
  color: var(--yellow);
  font-size: 1.25rem;
}

@keyframes ticker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* =====================================================
   Header
   ===================================================== */
.header {
  background: var(--black);
  color: var(--white);
  position: sticky;
  top: var(--ticker-height);
  z-index: 100;
  transition: transform var(--transition-slow);
}

.header.hidden {
  transform: translateY(-100%);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
}

.logo {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--white);
  transition: opacity var(--transition-fast);
}

.logo:hover {
  opacity: 0.9;
}

.logo span {
  color: var(--yellow);
}

/* Navigation */
.nav {
  display: flex;
  gap: var(--space-xs);
}

.nav a {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--gray-400);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

.nav a:hover {
  color: var(--white);
  background: var(--gray-800);
}

.nav a.active {
  color: var(--black);
  background: var(--yellow);
}

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

.search-btn,
.mobile-menu-btn {
  padding: 0.5rem;
  color: var(--gray-400);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.search-btn:hover,
.mobile-menu-btn:hover {
  color: var(--white);
}

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

.subscribe-btn {
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 0.75rem 1.5rem;
  background: var(--blue);
  color: var(--white);
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  transition: all var(--transition-base);
}

.subscribe-btn:hover {
  background: var(--blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.4);
}

/* Search Bar */
.search-bar {
  background: var(--gray-900);
  padding: 0;
  max-height: 0;
  overflow: hidden;
  transition: all var(--transition-slow);
}

.search-bar.active {
  padding: var(--space-md) 0;
  max-height: 80px;
}

.search-bar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.search-bar-inner svg {
  color: var(--gray-500);
  flex-shrink: 0;
}

.search-bar-inner input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--white);
  font-size: 1rem;
  outline: none;
}

.search-bar-inner input::placeholder {
  color: var(--gray-500);
}

.search-close {
  padding: 0.5rem;
  color: var(--gray-500);
  transition: color var(--transition-fast);
}

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

/* Mobile Menu */
.mobile-menu {
  background: var(--gray-900);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.mobile-menu.active {
  max-height: 400px;
}

.mobile-nav {
  padding: var(--space-md) var(--space-xl);
  display: flex;
  flex-direction: column;
}

.mobile-nav a {
  padding: var(--space-md);
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-400);
  border-bottom: 1px solid var(--gray-800);
  transition: all var(--transition-base);
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--yellow);
}

/* =====================================================
   Social Sidebar
   ===================================================== */
.social-sidebar {
  position: fixed;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 50;
}

.social-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  color: var(--gray-600);
  border: 1px solid var(--gray-200);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.social-btn:hover {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
  transform: scale(1.1);
}

.social-btn.copied {
  background: var(--green);
  color: var(--white);
  border-color: var(--green);
}

/* =====================================================
   Main Content
   ===================================================== */
.main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl);
}

/* =====================================================
   Hero Section
   ===================================================== */
.hero {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.hero-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* =====================================================
   Cards
   ===================================================== */
.card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--gray-100);
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
  cursor: pointer;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
  transition: transform var(--transition-slow);
}

.card:hover .card-image {
  transform: scale(1.05);
}

.card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-xl);
  background: linear-gradient(transparent, rgba(0,0,0,0.9));
  color: var(--white);
}

.card-category {
  display: inline-block;
  padding: 0.375rem 0.75rem;
  font-size: 0.6875rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
}

/* Category Colors */
.card-category.seo { background: var(--seo-gradient); }
.card-category.social { background: var(--social-gradient); }
.card-category.content { background: var(--content-gradient); }
.card-category.email { background: var(--email-gradient); }
.card-category.analytics { background: var(--analytics-gradient); }
.card-category.ppc { background: var(--ppc-gradient); }
.card-category.all { background: var(--seo-gradient); }

.card-title {
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  transition: color var(--transition-fast);
}

.card:hover .card-title {
  color: var(--yellow);
}

.card-excerpt {
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.5;
  opacity: 0.85;
  margin-top: 0.75rem;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: var(--space-md);
  font-size: 0.8125rem;
  color: var(--gray-500); /* WCAG AA compliant contrast */
}

.card-source {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.source-icon {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--gray-600);
}

/* Hero Card */
.card-hero {
  min-height: 600px;
}

.card-hero .card-title {
  font-size: 2.5rem;
}

.card-hero .card-overlay {
  padding: var(--space-2xl);
}

/* Sidebar Card */
.card-sidebar {
  flex: 1;
  min-height: 290px;
}

.card-sidebar .card-title {
  font-size: 1.375rem;
}

.card-sidebar .card-overlay {
  padding: var(--space-lg);
}

/* Featured Card */
.card-featured {
  min-height: 360px;
}

.card-featured .card-title {
  font-size: 1.75rem;
}

/* Standard Card */
.card-standard {
  background: var(--white);
  border: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
}

.card-standard .card-image {
  position: relative;
  height: 180px;
}

.card-standard .card-content {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-standard .card-category {
  margin-bottom: 0.75rem;
  align-self: flex-start;
}

.card-standard .card-title {
  font-size: 1.125rem;
  color: var(--black);
  margin-bottom: 0.5rem;
}

.card-standard:hover .card-title {
  color: var(--blue);
}

.card-standard .card-excerpt {
  font-size: 0.9375rem;
  color: var(--gray-600);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.card-standard .card-meta {
  color: var(--gray-600); /* WCAG AA compliant: 4.88:1 contrast ratio */
  margin-top: auto;
  padding-top: var(--space-md);
}

/* =====================================================
   Featured Row
   ===================================================== */
.featured-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

/* =====================================================
   Section Header
   ===================================================== */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 3px solid var(--black);
}

.section-title {
  font-size: 1.125rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.sort-select {
  padding: 0.5rem 2rem 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%23525252' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
}

.sort-select:hover {
  border-color: var(--gray-300);
}

/* =====================================================
   Standard Grid
   ===================================================== */
.standard-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

/* =====================================================
   Load More
   ===================================================== */
.load-more {
  text-align: center;
  margin: var(--space-2xl) 0;
}

.load-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 3rem;
  background: var(--black);
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  transition: all var(--transition-slow);
}

.load-more-btn:hover {
  background: var(--blue);
  transform: scale(1.05);
}

.load-more-btn .btn-icon {
  transition: transform var(--transition-slow);
}

.load-more-btn:hover .btn-icon {
  transform: translateY(4px);
}

.load-more-btn .btn-loading {
  display: none;
}

.load-more-btn.loading .btn-text,
.load-more-btn.loading .btn-icon {
  display: none;
}

.load-more-btn.loading .btn-loading {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.spinner {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* =====================================================
   Trending Section
   ===================================================== */
.trending-section {
  background: var(--black);
  color: var(--white);
  padding: var(--space-3xl) var(--space-xl);
  margin: 0 calc(-1 * var(--space-xl)) var(--space-2xl);
}

.trending-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.trending-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.trending-icon {
  width: 48px;
  height: 48px;
  background: var(--red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.trending-title {
  font-size: 1.5rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.trending-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-xl);
}

.trending-item {
  display: flex;
  gap: var(--space-md);
  cursor: pointer;
}

.trending-number {
  font-size: 3rem;
  font-weight: 900;
  color: var(--gray-500); /* WCAG AA compliant: 4.57:1 contrast ratio on dark bg */
  line-height: 1;
}

.trending-content {
  flex: 1;
}

.trending-item-category {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--blue-light); /* WCAG AA compliant: 6.14:1 contrast ratio on dark bg */
  margin-bottom: 0.5rem;
}

.trending-item-title {
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.3;
  transition: color var(--transition-fast);
}

.trending-item:hover .trending-item-title {
  color: var(--yellow);
}

.trending-item-meta {
  font-size: 0.75rem;
  color: var(--gray-400);
  margin-top: 0.5rem;
}

/* =====================================================
   Newsletter Section
   ===================================================== */
.newsletter-section {
  background: linear-gradient(135deg, var(--blue), var(--purple));
  color: var(--white);
  padding: var(--space-3xl);
  margin: var(--space-2xl) 0;
  border-radius: var(--radius-xl);
  text-align: center;
}

.newsletter-inner {
  max-width: 600px;
  margin: 0 auto;
}

.newsletter-title {
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.newsletter-text {
  font-size: 1.125rem;
  opacity: 0.9;
  margin-bottom: var(--space-xl);
  line-height: 1.6;
}

.newsletter-form {
  position: relative;
}

.newsletter-input-group {
  display: flex;
  gap: var(--space-sm);
  background: rgba(255, 255, 255, 0.1);
  padding: 0.5rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.newsletter-input {
  flex: 1;
  padding: 0.875rem 1.25rem;
  background: transparent;
  border: none;
  color: var(--white);
  font-size: 1rem;
  outline: none;
}

.newsletter-input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.newsletter-submit {
  padding: 0.875rem 2rem;
  background: var(--white);
  color: var(--blue);
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.newsletter-submit:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.newsletter-submit .btn-loading {
  display: none;
}

.newsletter-submit.loading .btn-text {
  display: none;
}

.newsletter-submit.loading .btn-loading {
  display: block;
}

.newsletter-disclaimer {
  font-size: 0.8125rem;
  opacity: 0.7;
  margin-top: var(--space-md);
}

.newsletter-disclaimer a {
  text-decoration: underline;
}

.newsletter-success {
  display: none;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  font-weight: 500;
}

.newsletter-success.show {
  display: flex;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* =====================================================
   Footer
   ===================================================== */
.footer {
  background: var(--black);
  color: var(--white);
  padding: var(--space-3xl) var(--space-xl);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-3xl);
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-md);
}

.footer-logo span {
  color: var(--yellow);
}

.footer-tagline {
  font-size: 0.9375rem;
  color: var(--gray-400);
  line-height: 1.6;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
  margin-top: var(--space-lg);
}

.footer-social-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gray-800);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  transition: all var(--transition-base);
}

.footer-social-btn:hover {
  background: var(--blue);
  transform: translateY(-2px);
}

.footer-title {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-lg);
  color: var(--gray-400);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  font-size: 0.9375rem;
  color: var(--gray-200);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  max-width: var(--max-width);
  margin: var(--space-2xl) auto 0;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--gray-800);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-copyright {
  font-size: 0.8125rem;
  color: var(--gray-400);
}

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

.footer-legal a {
  font-size: 0.8125rem;
  color: var(--gray-400);
  transition: color var(--transition-fast);
}

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

/* =====================================================
   Toast Notification
   ===================================================== */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--black);
  color: var(--white);
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-slow);
  z-index: 1000;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  visibility: visible;
}

/* =====================================================
   Skeleton Loading
   ===================================================== */
.skeleton {
  background: linear-gradient(90deg, var(--gray-200) 0%, var(--gray-100) 50%, var(--gray-200) 100%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-card {
  pointer-events: none;
}

.skeleton-image {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

.skeleton-image-sm {
  height: 180px;
}

.skeleton-badge {
  width: 80px;
  height: 24px;
  margin-bottom: var(--space-md);
}

.skeleton-title {
  width: 90%;
  height: 72px;
  margin-bottom: var(--space-md);
}

.skeleton-title-md {
  width: 85%;
  height: 48px;
  margin-bottom: var(--space-sm);
}

.skeleton-title-sm {
  width: 100%;
  height: 40px;
  margin-bottom: var(--space-sm);
}

.skeleton-text {
  width: 70%;
  height: 24px;
  margin-bottom: var(--space-md);
}

.skeleton-text-sm {
  width: 100%;
  height: 48px;
  margin-bottom: var(--space-sm);
}

.skeleton-meta {
  width: 50%;
  height: 16px;
}

/* =====================================================
   Responsive Design
   ===================================================== */

/* Large screens (1200px and below) */
@media (max-width: 1200px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .card-hero {
    min-height: 500px;
  }

  .hero-sidebar {
    flex-direction: row;
  }

  .card-sidebar {
    min-height: 250px;
  }

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

  .trending-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .social-sidebar {
    display: none;
  }
}

/* Tablets (1024px and below) */
@media (max-width: 1024px) {
  .featured-row {
    grid-template-columns: 1fr;
  }

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

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

/* Mobile landscape (768px and below) */
@media (max-width: 768px) {
  :root {
    --header-height: 56px;
    --ticker-height: 40px;
  }

  .ticker {
    top: 0;
  }

  .ticker-inner {
    padding: 0 var(--space-md);
  }

  .header {
    top: var(--ticker-height);
  }

  .header-inner {
    padding: var(--space-md);
  }

  .nav {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .subscribe-btn {
    display: none;
  }

  .main {
    padding: var(--space-md);
  }

  .card-hero {
    min-height: 400px;
  }

  .card-hero .card-title {
    font-size: 1.75rem;
  }

  .card-hero .card-overlay {
    padding: var(--space-lg);
  }

  .hero-sidebar {
    flex-direction: column;
  }

  .card-sidebar {
    min-height: 280px;
  }

  .standard-grid {
    grid-template-columns: 1fr;
  }

  .trending-section {
    padding: var(--space-xl) var(--space-md);
    margin: 0 calc(-1 * var(--space-md)) var(--space-xl);
  }

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

  .newsletter-section {
    padding: var(--space-xl);
    margin: var(--space-xl) 0;
  }

  .newsletter-title {
    font-size: 1.5rem;
  }

  .newsletter-input-group {
    flex-direction: column;
    background: transparent;
    border: none;
    padding: 0;
    gap: var(--space-md);
  }

  .newsletter-input {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
  }

  .footer {
    padding: var(--space-xl) var(--space-md);
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .footer-legal {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
  }
}

/* Mobile portrait (480px and below) */
@media (max-width: 480px) {
  .card-hero .card-title {
    font-size: 1.5rem;
  }

  .card-sidebar .card-title {
    font-size: 1.125rem;
  }

  .card-featured .card-title {
    font-size: 1.375rem;
  }

  .trending-number {
    font-size: 2rem;
  }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .ticker-content {
    animation: none;
  }
}