/* ==========================================================================
   GShaftMaster Pro - Professional Golf Shaft Review Website
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables (Design System)
   -------------------------------------------------------------------------- */
:root {
  /* Color Palette - Professional Dark Theme */
  --color-primary-dark: #2E2E2E;
  --color-champagne: #BF9A5E;
  --color-white: #FFFFFF;
  --color-light-gray: #F5F5F5;
  --color-text-body: #2E2E2E;
  --color-text-header: #000000;
  --color-text-muted: #666666;
  --color-border: #E0E0E0;
  --color-champagne-hover: #A8864E;
  --color-dark-hover: #1A1A1A;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-h1: 48px;
  --font-size-h2: 36px;
  --font-size-h3: 28px;
  --font-size-h4: 22px;
  --font-size-body: 16px;
  --font-size-small: 14px;
  --font-size-caption: 12px;
  --font-size-hero: 56px;

  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  --spacing-3xl: 96px;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.16);
}

/* --------------------------------------------------------------------------
   Reset & Base Styles
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-body);
  line-height: 1.6;
  color: var(--color-text-body);
  background-color: var(--color-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: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-header);
}

h1 {
  font-size: var(--font-size-hero);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--font-size-h2);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--font-size-h3);
}

h4 {
  font-size: var(--font-size-h4);
}

p {
  margin-bottom: var(--spacing-sm);
}

.text-muted {
  color: var(--color-text-muted);
}

.text-small {
  font-size: var(--font-size-small);
}

.text-caption {
  font-size: var(--font-size-caption);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* --------------------------------------------------------------------------
   Layout Utilities
   -------------------------------------------------------------------------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-2xl) 0;
}

.section-sm {
  padding: var(--spacing-xl) 0;
}

/* --------------------------------------------------------------------------
   Grid System
   -------------------------------------------------------------------------- */
.grid {
  display: grid;
  gap: var(--spacing-md);
}

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

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

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

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background-color: var(--color-primary-dark);
  z-index: 1000;
  transition: transform var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.nav-logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.02em;
}

.logo-g {
  color: var(--color-champagne);
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-link {
  font-size: var(--font-size-small);
  font-weight: 500;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
  padding: var(--spacing-xs) 0;
}

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

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

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

/* Mobile Navigation */
.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-xs);
}

.nav-mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  transition: var(--transition-fast);
}

.nav-mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background-color: var(--color-primary-dark);
  padding: var(--spacing-md);
}

.nav-mobile-menu.active {
  display: block;
}

.nav-mobile-menu .nav-link {
  display: block;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-mobile-toggle {
    display: flex;
  }
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-small);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 4px;
  transition: all var(--transition-normal);
}

.btn-primary {
  background-color: var(--color-champagne);
  color: var(--color-primary-dark);
}

.btn-primary:hover {
  background-color: var(--color-champagne-hover);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-champagne);
  border: 2px solid var(--color-champagne);
}

.btn-secondary:hover {
  background-color: var(--color-champagne);
  color: var(--color-primary-dark);
}

.btn-dark {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
}

.btn-dark:hover {
  background-color: var(--color-dark-hover);
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-caption);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-body);
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card {
  background-color: var(--color-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

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

.card-image {
  aspect-ratio: 16 / 9;
  background-color: var(--color-light-gray);
  overflow: hidden;
  position: relative;
}

.card-image:empty::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, #E8E8E8 0%, #D0D0D0 100%);
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

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

.card-content {
  padding: var(--spacing-md);
}

.card-tag {
  display: inline-block;
  font-size: var(--font-size-caption);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-champagne);
  margin-bottom: var(--spacing-xs);
}

.card-title {
  font-size: var(--font-size-h4);
  margin-bottom: var(--spacing-xs);
  line-height: 1.3;
}

.card-title a {
  color: inherit;
}

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

.card-excerpt {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: var(--spacing-sm);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-caption);
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, #1a1a1a 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(191, 154, 94, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(191, 154, 94, 0.05) 0%, transparent 40%);
  pointer-events: none;
}

.hero-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  padding: var(--spacing-md);
}

.hero-subtitle {
  font-size: var(--font-size-caption);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-champagne);
  margin-bottom: var(--spacing-md);
}

.hero-title {
  font-size: var(--font-size-hero);
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
  line-height: 1.1;
}

.hero-title em {
  font-style: italic;
  color: var(--color-champagne);
}

.hero-description {
  font-size: var(--font-size-body);
  color: rgba(255, 255, 255, 0.7);
  max-width: 600px;
  margin: 0 auto var(--spacing-lg);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
}

.hero-scroll {
  position: absolute;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--color-white);
  font-size: var(--font-size-caption);
  opacity: 0.5;
  animation: bounce 2s infinite;
}

.hero-scroll::after {
  content: '';
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-champagne), transparent);
  margin-top: var(--spacing-xs);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

/* Short Hero Variant */
.hero-short {
  min-height: 50vh;
}

.hero-short .hero-title {
  font-size: 42px;
}

.hero-light {
  background: linear-gradient(135deg, var(--color-light-gray) 0%, var(--color-white) 100%);
}

.hero-light .hero-title {
  color: var(--color-text-header);
}

.hero-light .hero-description {
  color: var(--color-text-muted);
}

.hero-light .hero-scroll {
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Page Header
   -------------------------------------------------------------------------- */
.page-header {
  background-color: var(--color-primary-dark);
  padding: calc(var(--nav-height) + var(--spacing-2xl)) 0 var(--spacing-2xl);
  text-align: center;
}

.page-header-light {
  background-color: var(--color-light-gray);
}

.page-header-title {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.page-header-title-dark {
  color: var(--color-text-header);
}

.page-header-description {
  color: rgba(255, 255, 255, 0.7);
  max-width: 600px;
  margin: 0 auto;
}

.page-header-description-dark {
  color: var(--color-text-muted);
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-caption);
  color: rgba(255, 255, 255, 0.5);
  margin-top: var(--spacing-md);
}

.breadcrumb a {
  color: var(--color-champagne);
}

.breadcrumb-dark {
  color: var(--color-text-muted);
}

.breadcrumb-dark a {
  color: var(--color-champagne);
}

/* --------------------------------------------------------------------------
   Filters Section
   -------------------------------------------------------------------------- */
.filters {
  background-color: var(--color-white);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: var(--nav-height);
  z-index: 100;
}

.filters-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  overflow-x: auto;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.filter-label {
  font-size: var(--font-size-caption);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.filter-btn {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-small);
  background-color: var(--color-light-gray);
  color: var(--color-text-body);
  border-radius: 4px;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--color-champagne);
  color: var(--color-primary-dark);
}

.filter-clear-btn {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-small);
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  border-radius: 4px;
  transition: all var(--transition-fast);
  margin-left: auto;
}

.filter-clear-btn:hover {
  background-color: var(--color-dark-hover);
}

/* --------------------------------------------------------------------------
   Article / Blog Post
   -------------------------------------------------------------------------- */
.article {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-md);
}

.article-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.article-category {
  display: inline-block;
  font-size: var(--font-size-caption);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-champagne);
  margin-bottom: var(--spacing-sm);
}

.article-title {
  font-size: var(--font-size-h1);
  margin-bottom: var(--spacing-sm);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

.article-image {
  aspect-ratio: 16 / 9;
  background-color: var(--color-light-gray);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: var(--spacing-xl);
}

.article-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-content {
  font-size: var(--font-size-body);
  line-height: 1.8;
}

.article-content h2 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.article-content h3 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.article-content p {
  margin-bottom: var(--spacing-md);
}

.article-content ul,
.article-content ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

.article-content li {
  margin-bottom: var(--spacing-xs);
  list-style: disc;
}

.article-content ol li {
  list-style: decimal;
}

/* Rating Box */
.rating-box {
  background-color: var(--color-light-gray);
  border-radius: 8px;
  padding: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

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

.rating-score {
  font-size: 48px;
  font-weight: 700;
  color: var(--color-champagne);
}

.rating-label {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

.rating-details {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
}

.rating-item {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid var(--color-border);
}

.rating-item-label {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

.rating-item-value {
  font-size: var(--font-size-small);
  font-weight: 600;
}

/* Pros & Cons */
.pros-cons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin: var(--spacing-xl) 0;
}

.pros-box,
.cons-box {
  padding: var(--spacing-md);
  border-radius: 8px;
}

.pros-box {
  background-color: rgba(76, 175, 80, 0.1);
  border: 1px solid rgba(76, 175, 80, 0.3);
}

.cons-box {
  background-color: rgba(244, 67, 54, 0.1);
  border: 1px solid rgba(244, 67, 54, 0.3);
}

.pros-box h4 {
  color: #4CAF50;
  margin-bottom: var(--spacing-sm);
}

.cons-box h4 {
  color: #F44336;
  margin-bottom: var(--spacing-sm);
}

.pros-box ul,
.cons-box ul {
  padding-left: var(--spacing-md);
}

.pros-box li,
.cons-box li {
  font-size: var(--font-size-small);
  margin-bottom: var(--spacing-xs);
  list-style: disc;
}

/* Final Verdict */
.verdict {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: 8px;
  margin: var(--spacing-xl) 0;
}

.verdict h3 {
  color: var(--color-champagne);
  margin-bottom: var(--spacing-sm);
}

.verdict p {
  opacity: 0.9;
}

/* --------------------------------------------------------------------------
   Section Headers
   -------------------------------------------------------------------------- */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
}

.section-title {
  font-size: var(--font-size-h2);
}

.section-link {
  font-size: var(--font-size-small);
  font-weight: 600;
  color: var(--color-champagne);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.section-link::after {
  content: '→';
  transition: transform var(--transition-fast);
}

.section-link:hover::after {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   Stats Section
   -------------------------------------------------------------------------- */
.stats {
  background-color: var(--color-primary-dark);
  padding: var(--spacing-2xl) 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  text-align: center;
}

.stat-item {
  color: var(--color-white);
}

.stat-number {
  font-size: 48px;
  font-weight: 700;
  color: var(--color-champagne);
  line-height: 1;
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: var(--font-size-small);
  opacity: 0.7;
}

/* --------------------------------------------------------------------------
   Newsletter Section
   -------------------------------------------------------------------------- */
.newsletter {
  background-color: var(--color-light-gray);
  padding: var(--spacing-2xl) 0;
  text-align: center;
}

.newsletter-title {
  font-size: var(--font-size-h2);
  margin-bottom: var(--spacing-sm);
}

.newsletter-description {
  color: var(--color-text-muted);
  max-width: 500px;
  margin: 0 auto var(--spacing-md);
}

.newsletter-form {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  max-width: 500px;
  margin: 0 auto;
}

.newsletter-input {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: var(--font-size-body);
}

.newsletter-input:focus {
  outline: none;
  border-color: var(--color-champagne);
}

.newsletter-success {
  margin: var(--spacing-md) auto 0;
  max-width: 500px;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid rgba(196, 167, 125, 0.45);
  border-radius: 4px;
  background-color: rgba(196, 167, 125, 0.12);
  color: var(--color-primary-dark);
  font-size: var(--font-size-small);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
}

.newsletter-success.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background-color: var(--color-primary-dark);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  color: var(--color-white);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

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

.footer-logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

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

.footer-description {
  font-size: var(--font-size-small);
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
}

.footer-title {
  font-size: var(--font-size-small);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-champagne);
  margin-bottom: var(--spacing-md);
}

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-links a {
  font-size: var(--font-size-small);
  color: rgba(255, 255, 255, 0.6);
}

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

.footer-bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-small);
  color: rgba(255, 255, 255, 0.5);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-brand {
    grid-column: span 2;
  }
}

/* --------------------------------------------------------------------------
   Responsive Adjustments
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  :root {
    --font-size-hero: 48px;
    --font-size-h1: 40px;
    --font-size-h2: 32px;
    --font-size-h3: 24px;
  }

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

@media (max-width: 768px) {
  :root {
    --font-size-hero: 36px;
    --font-size-h1: 32px;
    --font-size-h2: 28px;
    --font-size-h3: 22px;
  }

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

  .grid-4 {
    grid-template-columns: 1fr;
  }

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

  .pros-cons {
    grid-template-columns: 1fr;
  }

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

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }
.mt-6 { margin-top: var(--spacing-2xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }
.mb-6 { margin-bottom: var(--spacing-2xl); }

.hidden { display: none; }
.visible { display: block; }

.bg-white { background-color: var(--color-white); }
.bg-light { background-color: var(--color-light-gray); }
.bg-dark { background-color: var(--color-primary-dark); }