/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #3b82f6;
  --primary-dark: #2563eb;
  --text-dark: #1f2937;
  --text-light: #6b7280;
  --bg-white: #ffffff;
  --bg-light: #f8fafc;
  --bg-grey: #e2e8f0;
  --border-color: #e5e7eb;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --radius: 8px;
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-light);
  transition: all 0.3s ease;
}

/* Header Styles */
header {
  background-color: var(--bg-white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
}

.logo i {
  font-size: 1.75rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: var(--primary-color);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 0.5rem;
  cursor: pointer;
  font-size: 1rem;
  color: var(--text-dark);
  transition: all 0.3s;
}

.theme-toggle:hover {
  background-color: var(--bg-grey);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-dark);
}

/* Hero Section */
.hero {
  padding: 5rem 0;
  background: linear-gradient(135deg, var(--bg-white) 0%, var(--bg-light) 100%);
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-light);
  max-width: 700px;
  margin: 0 auto 2rem;
}

.search-container {
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 1rem 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 1rem;
  box-shadow: var(--shadow);
  transition: all 0.3s;
}

.search-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.search-btn {
  position: absolute;
  right: 5px;
  top: 5px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50px;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.3s;
}

.search-btn:hover {
  background-color: var(--primary-dark);
}

/* Tools Section */
.section {
  padding: 4rem 0;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
}

.view-all {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.tool-card {
  background-color: var(--bg-white);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
  cursor: pointer;
}

.tool-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.tool-icon {
  width: 60px;
  height: 60px;
  background-color: var(--bg-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  color: var(--primary-color);
  font-size: 1.5rem;
}

.tool-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.tool-card p {
  color: var(--text-light);
  margin-bottom: 1rem;
}

.tool-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tool-tag {
  background-color: var(--bg-light);
  color: var(--text-light);
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  font-size: 0.875rem;
}

/* Blog Section */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.blog-card {
  background-color: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
}

.blog-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.blog-image {
  height: 200px;
  background-color: var(--bg-grey);
  background-size: cover;
  background-position: center;
}

.blog-content {
  padding: 1.5rem;
}

.blog-meta {
  display: flex;
  gap: 1rem;
  margin-bottom: 0.75rem;
  font-size: 0.875rem;
  color: var(--text-light);
}

.blog-category {
  color: var(--primary-color);
  font-weight: 500;
}

.blog-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.blog-card p {
  color: var(--text-light);
  margin-bottom: 1rem;
}

.read-more {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Featured Section */
.featured {
  background-color: var(--bg-white);
}

.featured-tool {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.featured-content h2 {
  font-size: 2.25rem;
  margin-bottom: 1rem;
}

.featured-content p {
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

.btn {
  display: inline-block;
  background-color: var(--primary-color);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 500;
  transition: background-color 0.3s;
  border: none;
  cursor: pointer;
}

.btn:hover {
  background-color: var(--primary-dark);
}

.featured-image {
  background-color: var(--bg-grey);
  border-radius: var(--radius);
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 1.25rem;
}

/* Footer */
footer {
  background-color: var(--bg-white);
  padding: 3rem 0 1.5rem;
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-column h3 {
  font-size: 1.125rem;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  text-decoration: none;
  color: var(--text-light);
  transition: color 0.3s;
}

.footer-links a:hover {
  color: var(--primary-color);
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--bg-light);
  border-radius: 50%;
  color: var(--text-dark);
  transition: all 0.3s;
}

.social-links a:hover {
  background-color: var(--primary-color);
  color: white;
}

.footer-bottom {
  text-align: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-light);
  font-size: 0.875rem;
}

/* Dark Theme */
body.dark-theme {
  background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
  color: #e2e8f0;
}

body.dark-theme header,
body.dark-theme .tool-card,
body.dark-theme .blog-card,
body.dark-theme .featured,
body.dark-theme footer {
  background: #2d3748;
  color: #e2e8f0;
}

body.dark-theme .nav-links a,
body.dark-theme .section-title,
body.dark-theme .tool-card h3,
body.dark-theme .blog-card h3,
body.dark-theme .featured-content h2,
body.dark-theme .footer-column h3 {
  color: #e2e8f0;
}

body.dark-theme .tool-card p,
body.dark-theme .blog-card p,
body.dark-theme .featured-content p,
body.dark-theme .footer-links a,
body.dark-theme .footer-bottom {
  color: #cbd5e0;
}

body.dark-theme .search-input,
body.dark-theme .theme-toggle {
  background: #4a5568;
  color: #e2e8f0;
  border-color: #718096;
}

body.dark-theme .tool-icon,
body.dark-theme .tool-tag,
body.dark-theme .social-links a {
  background: #4a5568;
  color: #e2e8f0;
}

body.dark-theme .featured-image {
  background: #4a5568;
  color: #cbd5e0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links,
  .nav-actions .btn {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .hero p {
    font-size: 1.125rem;
  }

  .featured-tool {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .section-title {
    font-size: 1.75rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.875rem;
  }

  .tools-grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* SEO and Accessibility Improvements */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus Indicators */
a:focus-visible,
button:focus-visible,
.search-input:focus-visible {
  outline: 3px solid var(--primary-color);
  outline-offset: 2px;
}

/* Loading States */
.loading {
  opacity: 0.6;
  pointer-events: none;
}