/* Chess Puzzle Pro - Main Stylesheet */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Open Sans', 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--primary-dark);
}

ul, ol {
  list-style: none;
}

/* ========================================
   CSS Variables
   ======================================== */
:root {
  /* Colors - Sage Green & Cream theme (matching app icon) */
  --primary: #7D9A8C;
  --primary-dark: #6B8A7A;
  --primary-light: #9AB5A6;
  --secondary: #E8B86D;
  --secondary-dark: #D4A55A;
  --accent: #F5A973;
  --accent-dark: #E09660;
  --dark: #3D4A44;
  --light: #F9F7F4;
  --white: #ffffff;
  --cream: #F5F0E6;
  --text: #4A5650;
  --text-light: #6B7872;
  --border: #D5DCD8;
  --error: #D97373;

  /* 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;

  /* Container */
  --container-max: 1200px;
  --container-padding: 1rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* 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 25px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
}

h4 {
  font-size: 1.125rem;
}

p {
  margin-bottom: var(--space-md);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-accent { color: var(--accent); }
.text-light { color: var(--text-light); }

/* ========================================
   Layout
   ======================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--space-3xl) 0;
}

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

.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

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

@media (max-width: 900px) {
  .grid-3-fixed {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .grid-3-fixed {
    grid-template-columns: 1fr;
  }
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-wrap {
  flex-wrap: wrap;
}

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 48px;
  min-width: 48px;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: var(--secondary-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

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

.btn-dark:hover {
  background-color: #000;
  color: var(--white);
}

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: 1.125rem;
}

.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: 0.875rem;
  min-height: 36px;
}

/* ========================================
   Cards
   ======================================== */
.card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

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

.card-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--primary);
  color: var(--white);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  font-size: 1.5rem;
}

.card-icon-secondary {
  background-color: var(--secondary);
}

.card-icon-accent {
  background-color: var(--accent);
}

.card h3 {
  margin-bottom: var(--space-sm);
}

.card p {
  color: var(--text-light);
  margin-bottom: 0;
}

/* Feature Card */
.feature-card {
  text-align: center;
  padding: var(--space-xl);
}

.feature-card .card-icon {
  margin: 0 auto var(--space-md);
}

/* Tool Card */
.tool-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.tool-card .card-content {
  flex: 1;
}

.tool-card .btn {
  margin-top: var(--space-md);
}

/* ========================================
   Header & Navigation
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: 'Inter', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
}

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

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  border: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

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

.nav-link {
  color: var(--text);
  font-weight: 500;
  padding: var(--space-sm) 0;
  position: relative;
}

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

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

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

.nav-cta {
  display: none;
}

/* Mobile Menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--dark);
  transition: all var(--transition-fast);
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--white);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-cta {
    display: none;
  }
}

@media (min-width: 769px) {
  .nav-cta {
    display: inline-flex;
  }
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  padding: calc(70px + var(--space-3xl)) 0 var(--space-3xl);
  background: linear-gradient(135deg, #7D9A8C 0%, #5C7A6C 50%, #4A6858 100%);
  color: var(--white);
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.hero h1 {
  color: var(--white);
  margin-bottom: var(--space-lg);
}

.hero-subtitle {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: var(--space-xl);
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.hero-rating {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.hero-stars {
  color: var(--accent);
  font-size: 1.25rem;
}

.hero-rating-text {
  opacity: 0.9;
}

.hero-image {
  display: flex;
  justify-content: center;
}

.app-mockup {
  max-width: 300px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

@media (min-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr 1fr;
  }
}

/* ========================================
   App Store Badges
   ======================================== */
.app-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
}

.app-badge {
  display: inline-block;
  transition: transform var(--transition-fast);
}

.app-badge:hover {
  transform: scale(1.05);
}

.app-badge img {
  height: 54px;
  width: auto;
  display: block;
}

/* Google Play badge has built-in padding, so make it larger to match App Store visually */
.app-badge img[alt*="Google Play"] {
  height: 80px;
  margin: -13px 0;
}

/* ========================================
   Features Section
   ======================================== */
.features {
  background-color: var(--white);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-2xl);
}

.section-header p {
  color: var(--text-light);
  font-size: 1.125rem;
}

/* ========================================
   Puzzle Preview Section
   ======================================== */
.puzzle-preview {
  background-color: var(--light);
}

.puzzle-board {
  max-width: 400px;
  margin: 0 auto;
  background-color: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-md);
}

.puzzle-board img {
  border-radius: var(--radius-md);
}

.puzzle-info {
  text-align: center;
  margin-top: var(--space-lg);
}

.puzzle-hint {
  color: var(--text-light);
  font-style: italic;
  margin-bottom: var(--space-md);
}

/* ========================================
   Tools Section
   ======================================== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

/* ========================================
   Testimonials Section
   ======================================== */
.testimonials {
  background-color: var(--white);
}

.testimonial-card {
  background-color: var(--light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.testimonial-stars {
  color: var(--accent);
  margin-bottom: var(--space-md);
}

.testimonial-text {
  font-style: italic;
  margin-bottom: var(--space-md);
}

.testimonial-author {
  font-weight: 600;
  color: var(--dark);
}

.testimonial-source {
  color: var(--text-light);
  font-size: 0.875rem;
}

/* ========================================
   Download CTA Section
   ======================================== */
.download-cta {
  background: linear-gradient(135deg, #6B8A7A 0%, #5A7A68 50%, #4A6A58 100%);
  color: var(--white);
  text-align: center;
}

.download-cta h2 {
  color: var(--white);
}

.download-cta p {
  opacity: 0.9;
  font-size: 1.125rem;
  margin-bottom: var(--space-xl);
}

.download-cta .app-badges {
  justify-content: center;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background-color: var(--dark);
  color: var(--white);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand p {
  opacity: 0.7;
  margin-top: var(--space-md);
}

.footer h4 {
  color: var(--white);
  margin-bottom: var(--space-md);
}

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

.footer-link {
  color: rgba(255, 255, 255, 0.7);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-xl);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.footer-copyright {
  opacity: 0.7;
}

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

.footer-social a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.25rem;
}

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

/* ========================================
   Page Header (for inner pages)
   ======================================== */
.page-header {
  padding: calc(70px + var(--space-2xl)) 0 var(--space-2xl);
  background: linear-gradient(135deg, #7D9A8C 0%, #5C7A6C 50%, #4A6858 100%);
  color: var(--white);
}

.page-header h1 {
  color: var(--white);
  margin-bottom: var(--space-sm);
}

.page-header p {
  opacity: 0.9;
  font-size: 1.125rem;
  margin-bottom: 0;
}

.breadcrumb {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  font-size: 0.875rem;
  opacity: 0.8;
}

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

.breadcrumb span {
  opacity: 0.6;
}

/* ========================================
   Content Pages
   ======================================== */
.content-section {
  padding: var(--space-3xl) 0;
}

.content-wrapper {
  max-width: 800px;
  margin: 0 auto;
}

.content-wrapper h2 {
  margin-top: var(--space-2xl);
}

.content-wrapper h3 {
  margin-top: var(--space-xl);
}

.content-wrapper ul,
.content-wrapper ol {
  list-style: disc;
  padding-left: var(--space-xl);
  margin-bottom: var(--space-md);
}

.content-wrapper li {
  margin-bottom: var(--space-sm);
}

/* ========================================
   Puzzle Categories
   ======================================== */
.puzzle-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}

.puzzle-category {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background-color: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.puzzle-category:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.puzzle-category-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--primary);
  color: var(--white);
  border-radius: var(--radius-md);
  font-size: 1.25rem;
}

.puzzle-category-info h4 {
  margin-bottom: 0;
}

.puzzle-category-info span {
  color: var(--text-light);
  font-size: 0.875rem;
}

/* ========================================
   Puzzle Links Grid
   ======================================== */
.puzzle-links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: var(--space-sm);
  margin: var(--space-xl) 0;
}

.puzzle-link {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--white);
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.puzzle-link:hover {
  background-color: var(--primary);
  color: var(--white);
}

/* ========================================
   FAQ Section
   ======================================== */
.faq-section {
  margin-top: var(--space-2xl);
}

.faq-item {
  background-color: var(--white);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg);
  background: none;
  border: none;
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  color: var(--dark);
}

.faq-question:hover {
  background-color: var(--light);
}

.faq-icon {
  font-size: 1.25rem;
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--text-light);
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

/* ========================================
   Download Page
   ======================================== */
.download-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin: var(--space-2xl) 0;
}

.download-option {
  text-align: center;
  padding: var(--space-2xl);
  background-color: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.download-option h3 {
  margin-bottom: var(--space-sm);
}

.download-option p {
  color: var(--text-light);
  margin-bottom: var(--space-lg);
}

.platform-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-md);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.system-requirements {
  margin-top: var(--space-2xl);
}

.system-requirements ul {
  list-style: none;
  padding: 0;
}

.system-requirements li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
}

/* ========================================
   Screenshots Gallery / Phone Mockup Carousel
   ======================================== */
.phone-carousel {
  position: relative;
  max-width: 380px;
  margin: 0 auto;
}

.phone-carousel.hero-phone {
  max-width: 280px;
}

.hero-phone .phone-frame {
  padding: 8px;
  border-radius: 32px;
}

.hero-phone .phone-screen {
  border-radius: 26px;
}

.hero-phone .phone-notch {
  display: none;
}

.phone-frame {
  position: relative;
  background: linear-gradient(145deg, #1a1a1a 0%, #2d2d2d 50%, #1a1a1a 100%);
  border-radius: 40px;
  padding: 12px;
  box-shadow:
    0 25px 50px rgba(0, 0, 0, 0.3),
    inset 0 1px 1px rgba(255, 255, 255, 0.1);
}

.phone-screen {
  position: relative;
  background: #000;
  border-radius: 32px;
  overflow: hidden;
  aspect-ratio: 9/19.5;
}

.phone-notch {
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 28px;
  background: #000;
  border-radius: 0 0 16px 16px;
  z-index: 10;
}

.phone-notch::before {
  content: '';
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 8px;
  background: #1a1a1a;
  border-radius: 50%;
}

.carousel-container {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.carousel-slides {
  display: flex;
  transition: transform 0.5s ease-in-out;
  height: 100%;
}

.carousel-slide {
  flex: 0 0 100%;
  height: 100%;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-nav {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  padding: 0;
}

.carousel-dot.active {
  background: var(--primary);
  transform: scale(1.2);
}

.carousel-dot:hover {
  background: var(--primary-light);
}

.carousel-arrows {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  display: flex;
  justify-content: space-between;
  padding: 0 var(--space-sm);
  pointer-events: none;
}

.carousel-arrow {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  pointer-events: auto;
  transition: all var(--transition-fast);
}

.carousel-arrow:hover {
  background: var(--white);
  transform: scale(1.1);
}

.carousel-arrow svg {
  width: 20px;
  height: 20px;
  color: var(--dark);
}

/* Legacy screenshots gallery (horizontal scroll) */
.screenshots-gallery {
  display: flex;
  gap: var(--space-lg);
  overflow-x: auto;
  padding: var(--space-lg) 0;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x mandatory;
}

.screenshots-gallery::-webkit-scrollbar {
  height: 8px;
}

.screenshots-gallery::-webkit-scrollbar-track {
  background: var(--light);
  border-radius: 4px;
}

.screenshots-gallery::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

.screenshots-gallery::-webkit-scrollbar-thumb:hover {
  background: var(--text-light);
}

.screenshot-item {
  flex: 0 0 auto;
  width: 200px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  scroll-snap-align: start;
}

/* ========================================
   404 Page
   ======================================== */
.error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xl);
}

.error-code {
  font-size: 8rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  margin-bottom: var(--space-md);
}

.error-page h1 {
  margin-bottom: var(--space-md);
}

.error-page p {
  color: var(--text-light);
  margin-bottom: var(--space-xl);
}

/* ========================================
   Utilities
   ======================================== */
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }

.py-sm { padding-top: var(--space-sm); padding-bottom: var(--space-sm); }
.py-md { padding-top: var(--space-md); padding-bottom: var(--space-md); }
.py-lg { padding-top: var(--space-lg); padding-bottom: var(--space-lg); }

.px-sm { padding-left: var(--space-sm); padding-right: var(--space-sm); }
.px-md { padding-left: var(--space-md); padding-right: var(--space-md); }
.px-lg { padding-left: var(--space-lg); padding-right: var(--space-lg); }

.hidden { display: none; }
.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;
}

/* ========================================
   Responsive Adjustments
   ======================================== */
@media (max-width: 480px) {
  .hero {
    min-height: auto;
    padding-top: calc(70px + var(--space-2xl));
    padding-bottom: var(--space-2xl);
  }

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

  .app-badges {
    flex-direction: column;
    align-items: center;
  }

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

@media (min-width: 1024px) {
  :root {
    --container-padding: 2rem;
  }
}