/**
 * SmartGoogleSearch Responsive Improvements
 * 
 * This file contains responsive design improvements for all standard breakpoints:
 * - Large Desktop (≥1440px)
 * - Desktop (≥1024px)
 * - Tablet Landscape (≥768px)
 * - Tablet Portrait (≥600px)
 * - Mobile (≥375px)
 * - Small Mobile (<374px)
 */

/* Base improvements for all screen sizes */
html, body {
  overflow-x: hidden; /* Prevent horizontal scroll */
  max-width: 100%;
}

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

/* Large Desktop (≥1440px) */
@media (min-width: 1440px) {
  .container {
    max-width: 1320px;
    margin: 0 auto;
  }
  
  /* Enhance readability on large screens */
  p {
    font-size: 1.1rem;
    line-height: 1.7;
  }
  
  /* Scale up UI components appropriately */
  .card {
    padding: 2rem;
  }
  
  /* Ensure form elements scale well */
  input, select, textarea, button {
    padding: 0.75rem 1.25rem;
  }
  
  /* Adjust grid layouts for more columns on large screens */
  .popular-search-grid,
  .features-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

/* Desktop (≥1024px) */
@media (min-width: 1024px) and (max-width: 1439px) {
  .container {
    max-width: 960px;
    margin: 0 auto;
  }
  
  /* Optimize layout for standard desktop */
  .card {
    padding: 1.75rem;
  }
  
  /* Ensure touch targets are optimized for desktop */
  .btn, button {
    min-height: 44px;
  }
}

/* Tablet Landscape (≥768px) */
@media (min-width: 768px) and (max-width: 1023px) {
  .container {
    width: 90%;
    max-width: 720px;
  }
  
  /* Optimize content for tablet landscape */
  h1 { font-size: clamp(2rem, 4vw, 2.5rem); }
  h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
  
  /* Adjust card and grid layouts */
  .card {
    padding: 1.5rem;
  }
  
  /* Optimize form layouts for tablets */
  .tool-filters-row {
    flex-wrap: nowrap;
    gap: 10px;
  }
  
  .tool-filter {
    flex: 1;
    min-width: 0; /* Allow shrinking below content size */
  }
  
  /* Adjust grid layouts for tablets */
  .popular-search-grid,
  .features-grid,
  .article-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  
  /* Ensure dropdown menus don't overflow */
  .dropdown-menu {
    max-width: 250px;
  }
}

/* Tablet Portrait (≥600px) */
@media (min-width: 600px) and (max-width: 767px) {
  .container {
    width: 90%;
    max-width: 540px;
  }
  
  /* Optimize for tablet portrait */
  h1 { font-size: clamp(1.8rem, 5vw, 2.2rem); }
  h2 { font-size: clamp(1.4rem, 4vw, 1.8rem); }
  h3 { font-size: clamp(1.2rem, 3vw, 1.5rem); }
  
  /* Adjust layout components */
  .card {
    padding: 1.25rem;
  }
  
  /* Optimize form elements */
  .tool-filters-row {
    flex-direction: column;
    gap: 15px;
  }
  
  .tool-filter {
    width: 100%;
  }
  
  /* Adjust grid layouts for tablet portrait */
  .popular-search-grid,
  .features-grid,
  .article-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  
  /* Ensure touch targets are large enough */
  button, .btn, a {
    min-height: 44px;
    padding: 10px 15px;
  }
  
  /* Fix table displays for smaller screens */
  table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}

/* Mobile (≥375px) */
@media (min-width: 375px) and (max-width: 599px) {
  .container {
    width: 90%;
    padding: 0 10px;
  }
  
  /* Optimize typography for mobile */
  h1 { font-size: clamp(1.5rem, 6vw, 2rem); }
  h2 { font-size: clamp(1.3rem, 5vw, 1.7rem); }
  h3 { font-size: clamp(1.1rem, 4vw, 1.4rem); }
  p { font-size: 1rem; line-height: 1.5; }
  
  /* Optimize layout components */
  .card {
    padding: 1rem;
    margin-bottom: 1.5rem;
  }
  
  /* Ensure all grids stack on mobile */
  .popular-search-grid,
  .features-grid,
  .article-grid,
  .about-features,
  .mission-values,
  .form-row {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  
  /* Optimize form elements */
  input, select, textarea {
    font-size: 16px; /* Prevent auto-zoom on iOS */
    padding: 12px;
  }
  
  /* Ensure proper spacing and visibility */
  .section-header {
    margin-bottom: 1.5rem;
  }
  
  /* Fix menu bar on mobile */
  .header .nav {
    padding: 0.75rem 0;
  }
  
  /* Ensure touch targets are large enough */
  .btn, button, a.btn, input[type="submit"] {
    min-height: 44px;
    padding: 10px 15px;
    font-size: 1rem;
  }
  
  /* Fix header menu item size */
  .nav-links li {
    width: 100%;
  }
  
  /* Ensure images don't overflow */
  img {
    max-width: 100%;
    height: auto;
  }
}

/* Small Mobile (<374px) */
@media (max-width: 374px) {
  .container {
    width: 100%;
    padding: 0 8px;
  }
  
  /* Optimize typography for very small screens */
  h1 { font-size: 1.4rem; }
  h2 { font-size: 1.2rem; }
  h3 { font-size: 1.1rem; }
  p { font-size: 0.95rem; line-height: 1.4; }
  
  /* Optimize UI components */
  .card {
    padding: 0.875rem;
    margin-bottom: 1rem;
  }
  
  /* Ensure all grids stack properly */
  .popular-search-grid,
  .features-grid,
  .article-grid,
  .about-features,
  .mission-values,
  .form-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  
  /* Optimize form elements */
  input, select, textarea {
    font-size: 16px;
    padding: 10px;
  }
  
  /* Adjust button sizes */
  .btn, button, a.btn, input[type="submit"] {
    min-height: 42px;
    padding: 8px 12px;
    font-size: 0.95rem;
  }
  
  /* Reduce logo size on very small screens */
  .logo {
    font-size: 1.2rem;
  }
  
  /* Fix navigation for tiny screens */
  .nav {
    padding: 8px 0;
  }
  
  /* Optimize mobile menu buttons */
  .mobile-menu-btn,
  .theme-toggle {
    width: 40px;
    height: 40px;
  }
  
  /* Reduce icon sizes slightly */
  .fa, .fas, .far, .fab {
    font-size: 0.9em;
  }
  
  /* Fix scroll-to-top button size */
  .scroll-to-top {
    width: 35px;
    height: 35px;
    bottom: 10px;
    right: 10px;
  }
  
  .scroll-to-top i {
    font-size: 1rem;
  }
}

/* Fix contrast issues in both light and dark mode */
.nav-links a,
.card h3,
.btn-primary,
.form label,
.search-text,
.section-header h2 {
  color: var(--text-color);
}

[data-theme="dark"] .card {
  background-color: var(--gray-800);
  border-color: var(--gray-700);
}

[data-theme="dark"] .card h3 {
  color: white;
}

[data-theme="dark"] p,
[data-theme="dark"] .card p,
[data-theme="dark"] .form label,
[data-theme="dark"] .search-text {
  color: var(--gray-300);
}

/* Ensure proper touch targets on all screen sizes */
@media (hover: none) and (pointer: coarse) {
  button,
  .btn,
  input[type="submit"],
  .nav-links a,
  .mobile-menu-btn,
  .theme-toggle,
  .dropdown-menu a,
  .search-icon,
  .scroll-to-top {
    min-height: 44px;
    min-width: 44px;
  }
  
  .nav-links a,
  .dropdown-menu a {
    padding: 12px 16px;
  }
  
  /* Improve spacing between menu items */
  .nav-links li:not(:last-child) {
    margin-bottom: 4px;
  }
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.1s !important;
    transition-duration: 0.1s !important;
    scroll-behavior: auto !important;
  }
}