/* Responsive Design - Mobile First Approach */

/* Mobile Styles (320px - 767px) */
@media (max-width: 767px) {
  /* Container adjustments */
  .container {
    padding: 0 var(--space-md);
  }
  
  /* Navigation */
  .navbar-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--space-md);
    box-shadow: var(--shadow-lg);
    gap: 0;
  }
  
  .navbar-nav.active {
    display: flex;
  }
  
  .navbar-nav a {
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-gray-light);
  }
  
  .navbar-toggle {
    display: flex;
  }
  
  /* Hero section */
  .hero {
    padding: var(--space-2xl) 0;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    text-align: center;
  }
  
  .hero-text {
    order: 2;
  }
  
  .hero-image {
    order: 1;
  }
  
  .hero-image img {
    max-width: 280px;
  }
  
  /* Features grid */
  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .feature-item {
    padding: var(--space-lg);
  }
  
  /* Blog grid */
  .blog-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  /* Cards */
  .card {
    padding: var(--space-md);
  }
  
  /* Buttons */
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .btn + .btn {
    margin-top: var(--space-sm);
  }
  
  /* Footer */
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    text-align: center;
  }
  
  /* Typography adjustments */
  h1 {
    font-size: var(--font-size-3xl);
  }
  
  h2 {
    font-size: var(--font-size-2xl);
  }
  
  h3 {
    font-size: var(--font-size-xl);
  }
  
  /* Spacing adjustments */
  .hero-text p {
    font-size: var(--font-size-base);
  }
  
  /* Article content */
  .article-content {
    padding: var(--space-md);
  }
  
  .article-header {
    text-align: center;
    margin-bottom: var(--space-xl);
  }
  
  /* Tables - make them scrollable on mobile */
  .table-container {
    overflow-x: auto;
    margin-bottom: var(--space-md);
  }
  
  table {
    min-width: 500px;
  }
}

/* Tablet Styles (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
  /* Container */
  .container {
    padding: 0 var(--space-lg);
  }
  
  /* Navigation - show full nav on tablet */
  .navbar-toggle {
    display: none;
  }
  
  .navbar-nav {
    display: flex;
  }
  
  /* Hero section */
  .hero-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }
  
  .hero-image img {
    max-width: 350px;
  }
  
  /* Features grid */
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* Blog grid */
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* Footer */
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Desktop Styles (1024px and above) */
@media (min-width: 1024px) {
  /* Container */
  .container {
    padding: 0 var(--space-xl);
  }
  
  /* Features grid */
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  /* Blog grid */
  .blog-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  /* Footer */
  .footer-content {
    grid-template-columns: repeat(4, 1fr);
  }
  
  /* Article layout with sidebar */
  .article-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--space-2xl);
  }
  
  .article-sidebar {
    position: sticky;
    top: calc(var(--space-3xl) + 60px); /* Account for navbar height */
    height: fit-content;
  }
}

/* Large Desktop (1280px and above) */
@media (min-width: 1280px) {
  .container {
    padding: 0 var(--space-2xl);
  }
  
  .hero-image img {
    max-width: 450px;
  }
  
  .article-layout {
    grid-template-columns: 1fr 350px;
  }
}

/* High DPI / Retina Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  /* Ensure crisp images on high DPI displays */
  img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* Reduced Motion Preferences */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* Print Styles */
@media print {
  .navbar,
  .footer,
  .btn,
  .navbar-toggle,
  .no-print {
    display: none !important;
  }
  
  .container {
    max-width: none;
    padding: 0;
  }
  
  .hero {
    background: none !important;
    padding: var(--space-md) 0;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid var(--color-gray-light);
  }
  
  a[href]:after {
    content: " (" attr(href) ")";
    font-size: var(--font-size-sm);
    color: var(--color-gray-medium);
  }
  
  /* Ensure good contrast for printing */
  * {
    color: #000 !important;
    background: #fff !important;
  }
  
  h1, h2, h3, h4, h5, h6 {
    color: #000 !important;
    page-break-after: avoid;
  }
  
  p, li {
    orphans: 3;
    widows: 3;
  }
  
  .page-break {
    page-break-before: always;
  }
}

/* Focus and Accessibility Improvements */
@media (min-width: 768px) {
  /* Larger focus indicators on larger screens */
  :focus-visible {
    outline-width: 3px;
    outline-offset: 3px;
  }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
  /* Increase touch targets on touch devices */
  .btn,
  .navbar-nav a,
  .card {
    min-height: 48px;
  }
  
  /* Remove hover effects on touch devices */
  .card:hover,
  .blog-card:hover {
    transform: none;
    box-shadow: var(--shadow-md);
  }
  
  .btn-primary:hover {
    transform: none;
  }
}

/* Landscape orientation on mobile */
@media (max-width: 767px) and (orientation: landscape) {
  .hero {
    padding: var(--space-xl) 0;
  }
  
  .hero-content {
    grid-template-columns: 1fr 1fr;
  }
  
  .hero-text {
    order: 1;
  }
  
  .hero-image {
    order: 2;
  }
}