/* SnapB2B Website - Responsive Styles */
/* Mobile-First Responsive Design */

/* ===== TABLET (768px and below) ===== */
@media (max-width: 768px) {
  
  /* Typography */
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.875rem; }
  h3 { font-size: 1.375rem; }
  
  .hero h1 {
    font-size: 2.25rem;
  }
  
  .hero p {
    font-size: 1.125rem;
  }
  
  .cta h2 {
    font-size: 2rem;
  }
  
  .cta p {
    font-size: 1.125rem;
  }
  
  /* Layout */
  .section {
    padding: var(--spacing-xl) 0;
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  /* Navigation */
  .nav-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border-top: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-sm);
    gap: 0;
  }
  
  .nav-menu.active {
    display: flex;
  }
  
  .nav-link {
    width: 100%;
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
    border-radius: 0;
  }
  
  .nav-link:last-child {
    border-bottom: none;
  }
  
  .menu-toggle {
    display: block;
  }
  
  /* Animated menu toggle */
  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  /* Cards */
  .card-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  /* Features */
  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  /* Footer */
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  /* Buttons */
  .btn {
    width: 100%;
    display: block;
  }
  
  .btn + .btn {
    margin-top: var(--spacing-sm);
  }
  
  /* Hero Spacing */
  .hero {
    padding: var(--spacing-xl) 0;
  }
  
  .cta {
    padding: var(--spacing-xl) 0;
  }
}

/* ===== MOBILE (480px and below) ===== */
@media (max-width: 480px) {
  
  /* Typography */
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }
  
  .hero h1 {
    font-size: 1.75rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .cta h2 {
    font-size: 1.75rem;
  }
  
  .cta p {
    font-size: 1rem;
  }
  
  /* Spacing adjustments */
  :root {
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 2.5rem;
  }
  
  /* Logo */
  .logo {
    font-size: 1.25rem;
  }
  
  .logo img {
    height: 32px;
  }
  
  /* Card icon */
  .card-icon {
    width: 50px;
    height: 50px;
    font-size: 1.25rem;
  }
  
  /* Feature icon */
  .feature-icon {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
  }
}

/* ===== DESKTOP ENHANCEMENTS (1200px and above) ===== */
@media (min-width: 1200px) {
  
  /* Hero */
  .hero h1 {
    font-size: 3.5rem;
  }
  
  .hero p {
    font-size: 1.375rem;
  }
  
  /* Cards */
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  /* Features - 3 columns on large screens */
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  
  /* Hide non-essential elements */
  .header,
  .nav-menu,
  .menu-toggle,
  .cta,
  .footer {
    display: none;
  }
  
  /* Optimize for printing */
  body {
    color: black;
    background: white;
  }
  
  a {
    text-decoration: underline;
  }
  
  /* Show URLs for links */
  a[href]:after {
    content: " (" attr(href) ")";
  }
  
  /* Prevent page breaks inside elements */
  .card,
  .feature-item {
    page-break-inside: avoid;
  }
}

/* ===== ACCESSIBILITY ENHANCEMENTS ===== */

/* Focus styles for keyboard navigation */
*:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

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

*:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --primary-color: #0000ff;
    --text-primary: #000000;
    --background: #ffffff;
    --border-color: #000000;
  }
  
  .btn {
    border: 2px solid currentColor;
  }
}

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

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
  :root {
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --background: #111827;
    --background-alt: #1f2937;
    --border-color: #374151;
  }
  
  .card {
    background: var(--background-alt);
  }
  
  .header {
    background: var(--background);
    border-bottom-color: var(--border-color);
  }
}