/* Responsive Styles for Renewable Energy Website */

/* Base responsive improvements */
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

/* Mobile Devices (< 576px - Extra Small) */
@media (max-width: 575px) {
  /* Container */
  .container {
    --container-padding: var(--spacing-3);
  }
  
  /* Typography */
  h1 {
    font-size: var(--font-size-2xl);
    line-height: 1.3;
  }
  
  h2 {
    font-size: var(--font-size-xl);
    line-height: 1.3;
  }
  
  h3 {
    font-size: var(--font-size-lg);
    line-height: 1.3;
  }
  
  /* Navigation */
  header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(13, 48, 74, 0.95);
    backdrop-filter: blur(10px);
  }
  
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    height: 100vh;
    background-color: var(--primary-dark-blue);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-6);
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    box-shadow: -5px 0 25px rgba(0, 0, 0, 0.3);
  }
  
  .nav-links.active {
    right: 0;
  }
  
  .mobile-menu-btn {
    display: block;
    z-index: 1000;
  }
  
  .search-box {
    display: none;
  }
  
  /* Hero Section */
  .hero {
    min-height: 80vh;
    padding: var(--spacing-10) 0;
    text-align: center;
  }
  
  .hero h1 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-4);
  }
  
  .hero p {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-6);
  }
  
  /* Energy Cards */
  .energy-cards {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }
  
  /* Article Cards */
  .articles-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }
  
  /* Stats Section */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
  }
  
  .stat-item {
    padding: var(--spacing-4);
  }
  
  .stat-number {
    font-size: var(--font-size-2xl);
  }
  
  .stat-label {
    font-size: var(--font-size-base);
  }
  
  /* Footer */
  .footer {
    padding: var(--spacing-8) 0 var(--spacing-2);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }
  
  .footer-section {
    text-align: center;
  }
  
  /* Article List Page */
  .article-filters {
    flex-direction: column;
    align-items: stretch;
  }
  
  .filter-categories {
    justify-content: center;
  }
  
  /* Article Detail Page */
  .article-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-2);
  }
  
  .share-buttons {
    flex-direction: column;
  }
  
  /* Contact Page */
  .contact-form {
    padding: var(--spacing-4);
  }
  
  /* About Page */
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
  }
  
  /* Back to Top Button */
  .back-to-top {
    width: 40px;
    height: 40px;
    bottom: var(--spacing-4);
    right: var(--spacing-4);
  }
  
  /* Button styles */
  .btn {
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-sm);
    min-width: 140px;
  }
  
  /* Card adjustments */
  .energy-card,
  .article-card {
    padding: var(--spacing-4);
  }
  
  /* Image adjustments */
  .card-image img {
    height: 200px;
  }
  
  /* Section padding */
  section {
    padding: var(--spacing-8) 0;
  }
}

/* Mobile Devices (576px - 767px - Small) */
@media (min-width: 576px) and (max-width: 767px) {
  /* Container */
  .container {
    --container-padding: var(--spacing-4);
  }
  
  /* Stats Section */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-6);
  }
  
  /* Footer */
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-6);
  }
}

/* Tablet Devices (768px - 991px - Medium) */
@media (min-width: 768px) and (max-width: 991px) {
  /* Container */
  .container {
    --container-padding: var(--spacing-4);
  }
  
  /* Navigation */
  .nav-links {
    gap: var(--spacing-4);
  }
  
  .nav-links a {
    padding: var(--spacing-2) var(--spacing-3);
  }
  
  /* Hero Section */
  .hero h1 {
    font-size: var(--font-size-2xl);
  }
  
  /* Energy Cards */
  .energy-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-6);
  }
  
  /* Article Cards */
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-6);
  }
  
  /* Stats Section */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* Footer */
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* About Page */
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-10);
  }
}

/* Tablet Devices (992px - 1024px - Large) */
@media (min-width: 992px) and (max-width: 1024px) {
  /* Energy Cards */
  .energy-cards {
    grid-template-columns: repeat(3, 1fr);
  }
  
  /* Article Cards */
  .articles-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Small Desktop Devices (1025px - 1279px) */
@media (min-width: 1025px) and (max-width: 1279px) {
  /* Container */
  .container {
    max-width: 960px;
  }
  
  /* Energy Cards */
  .energy-cards {
    grid-template-columns: repeat(3, 1fr);
  }
  
  /* Article Cards */
  .articles-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  /* Stats Section */
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  /* Footer */
  .footer-content {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Large Desktop Devices (1280px and above) */
@media (min-width: 1280px) {
  /* Container */
  .container {
    max-width: 1200px;
  }
  
  /* Energy Cards */
  .energy-cards {
    grid-template-columns: repeat(4, 1fr);
  }
  
  /* Hero Section */
  .hero {
    padding: var(--spacing-20) 0;
  }
  
  .hero h1 {
    font-size: var(--font-size-4xl);
  }
}

/* Orientation Adjustments */
@media (max-height: 500px) and (orientation: landscape) {
  .hero {
    min-height: 120vh;
  }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .card-icon {
    font-size: 3.5rem;
  }
  
  .logo {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* Article Grid Responsive Adjustments */
@media (max-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-6);
  }
}

@media (max-width: 768px) {
  .articles-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-5);
  }
  
  .article-card .card-image {
    height: 180px;
  }
}

@media (max-width: 576px) {
  .articles-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
  }
  
  .article-card .card-image {
    height: 200px;
  }
}

/* Print Styles */
@media print {
  .navbar, .hero, .filter-bar, .back-to-top {
    display: none;
  }
  
  body {
    background-color: white;
    color: black;
  }
}