/* Mobile First Responsive Design */

/* Extra Small Devices (phones, 576px and down) */
@media (max-width: 575.98px) {
  :root {
    --font-size-5xl: 2.25rem;
    --font-size-4xl: 1.875rem;
    --font-size-3xl: 1.5rem;
    --spacing-20: 3rem;
    --spacing-16: 2.5rem;
    --spacing-12: 2rem;
  }

  .container {
    padding: 0 var(--spacing-3);
  }

  /* Header */
  .top-bar {
    display: none;
  }

  .nav-menu {
    position: fixed;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: white;
    flex-direction: column;
    padding: var(--spacing-6);
    box-shadow: var(--shadow-large);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 1000;
  }

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

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

  .mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }

  .donate-btn {
    display: none;
  }

  /* Hero */
  .hero-title {
    font-size: 1.4rem;
  }

  .hero-description {
    font-size: var(--font-size-sm);
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-actions .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
  }

  .stat-number {
    font-size: var(--font-size-2xl);
  }

  /* Sections */
  .section-header h2 {
    font-size: var(--font-size-3xl);
  }

  .impact-grid,
  .programs-grid,
  .blog-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }

  .impact-card,
  .program-card,
  .blog-card {
    min-width: unset;
  }

  /* CTA */
  .cta-content h2 {
    font-size: var(--font-size-3xl);
  }

  .cta-content p {
    font-size: var(--font-size-lg);
  }

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }

  .cta-actions .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  /* Footer */
  .newsletter-form {
    flex-direction: column;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
    text-align: center;
  }

  .footer-bottom-content {
    flex-direction: column;
    text-align: center;
  }

  /* Recognition */
  .recognition-logos {
    flex-direction: column;
    gap: var(--spacing-6);
  }

  /* Language Modal */
  .language-options {
    grid-template-columns: 1fr;
  }

  /* Components */
  .program-stats {
    justify-content: center;
  }

  .contact-info {
    flex-direction: column;
    gap: var(--spacing-3);
  }

  .top-bar-content {
    justify-content: center;
    text-align: center;
  }
}

/* Small Devices (landscape phones, 576px and up) */
@media (min-width: 576px) and (max-width: 767.98px) {
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .impact-grid,
  .programs-grid {
    grid-template-columns: 1fr;
  }

  .blog-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }

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

/* Medium Devices (tablets, 768px and up) */
@media (min-width: 768px) and (max-width: 991.98px) {
  .nav-menu {
    gap: var(--spacing-6);
  }

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

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

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

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

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

  .cta-actions {
    flex-direction: row;
  }
}

/* Large Devices (desktops, 992px and up) */
@media (min-width: 992px) and (max-width: 1199.98px) {
  .impact-grid,
  .programs-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

/* Extra Large Devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
  .container {
    max-width: 1200px;
  }

  .hero-title {
    font-size: var(--font-size-5xl);
    line-height: 0.95;
  }

  .section-header h2 {
    font-size: var(--font-size-4xl);
  }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .hero-background img,
  .cta-background img,
  .impact-image img,
  .blog-image img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* Reduced Motion */
@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;
  }

  .hero-slide {
    transition: none;
  }

  .loading::after {
    animation: none;
  }

  .skeleton {
    animation: none;
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-light: #9ca3af;
    --background-light: #1f2937;
    --background-white: #111827;
    --border-color: #374151;
  }

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

  .card,
  .impact-card,
  .program-card,
  .blog-card {
    background-color: var(--background-white);
    border: 1px solid var(--border-color);
  }

  .modal-content {
    background-color: var(--background-white);
    color: var(--text-primary);
  }

  .form-input,
  .form-textarea,
  .form-select {
    background-color: var(--background-white);
    border-color: var(--border-color);
    color: var(--text-primary);
  }

  .newsletter-form input {
    background-color: var(--background-white);
    color: var(--text-primary);
  }
}

/* Print Styles */
@media print {
  .header,
  .hero-nav-dots,
  .back-to-top,
  .modal,
  .cta,
  .newsletter-section {
    display: none !important;
  }

  .hero {
    min-height: auto;
    padding: var(--spacing-8) 0;
  }

  .hero-background {
    display: none;
  }

  .hero-content {
    color: var(--text-primary);
  }

  body {
    font-size: 12pt;
    line-height: 1.4;
  }

  h1 {
    font-size: 24pt;
  }

  h2 {
    font-size: 20pt;
  }

  h3 {
    font-size: 16pt;
  }

  .btn {
    border: 1px solid var(--text-primary);
    background: none;
    color: var(--text-primary);
  }

  .impact-grid,
  .programs-grid,
  .blog-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
  }

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

/* Accessibility Enhancements */
@media (prefers-reduced-motion: no-preference) {
  .hero-slide {
    transition: opacity 1s ease-in-out;
  }
}

/* Focus Styles for Keyboard Navigation */
.btn:focus,
.form-input:focus,
.form-textarea:focus,
.form-select:focus,
.nav-menu a:focus,
.language-toggle:focus,
.mobile-menu-toggle:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Skip Link for Screen Readers */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary-color);
  color: white;
  padding: 8px;
  text-decoration: none;
  border-radius: 4px;
  z-index: 2000;
}

.skip-link:focus {
  top: 6px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  .btn-outline {
    border-width: 2px;
  }

  .hero-overlay {
    background: rgba(0, 0, 0, 0.8);
  }

  .cta-overlay {
    background: rgba(0, 0, 0, 0.9);
  }

  .impact-overlay {
    background: rgba(0, 0, 0, 0.8);
  }
}