/* Base styles */
:root {
  --primary-color: #FF6B35;
  --secondary-color: #2EC4B6;
  --background-color: #FFFFFF;
  --text-color: #333333;
  --accent-color: #F9CB40;
  --light-gray: #f5f5f5;
  --medium-gray: #e0e0e0;
  --dark-gray: #666666;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--text-color);
  background-color: var(--background-color);
  line-height: 1.6;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: 1.5rem;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--secondary-color);
}

/* Header */
header {
  padding: 1.5rem 0;
  background-color: var(--background-color);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-color);
}

.logo span {
  color: var(--primary-color);
}

nav ul {
  display: flex;
  list-style: none;
}

nav ul li {
  margin-left: 2rem;
}

nav ul li a {
  color: var(--text-color);
  font-weight: 500;
}

nav ul li a:hover {
  color: var(--primary-color);
}

.subscribe-btn {
  background-color: var(--primary-color);
  color: white;
  padding: 0.5rem 1.5rem;
  border-radius: 4px;
  font-weight: 500;
  transition: background-color 0.3s ease;
}

.subscribe-btn:hover {
  background-color: var(--secondary-color);
  color: white;
}

/* Mobile menu */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero section */
.hero {
  padding: 5rem 0;
  background-color: var(--light-gray);
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.25rem;
  max-width: 700px;
  margin: 0 auto 2rem;
}

/* Categories section */
.categories {
  padding: 5rem 0;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.category-card {
  background-color: var(--light-gray);
  border-radius: 8px;
  padding: 2rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.category-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.category-card h3 {
  margin-bottom: 1rem;
}

.category-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

/* Featured articles */
.featured-articles {
  padding: 5rem 0;
  background-color: var(--light-gray);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.article-card {
  background-color: var(--background-color);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.article-card:hover {
  transform: translateY(-5px);
}

.article-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.article-content {
  padding: 1.5rem;
}

.article-category {
  display: inline-block;
  background-color: var(--secondary-color);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
}

.article-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.article-excerpt {
  color: var(--dark-gray);
  margin-bottom: 1rem;
}

.read-time {
  font-size: 0.875rem;
  color: var(--dark-gray);
}

/* Testimonials */
.testimonials {
  padding: 5rem 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.testimonial-card {
  background-color: var(--light-gray);
  border-radius: 8px;
  padding: 2rem;
  position: relative;
}

.testimonial-text {
  font-style: italic;
  margin-bottom: 1.5rem;
}

.testimonial-author {
  font-weight: 500;
}

.testimonial-source {
  color: var(--dark-gray);
  font-size: 0.875rem;
}

/* Newsletter subscription */
.newsletter {
  padding: 5rem 0;
  background-color: var(--primary-color);
  color: white;
  text-align: center;
}

.newsletter h2 {
  margin-bottom: 1.5rem;
}

.newsletter p {
  max-width: 600px;
  margin: 0 auto 2rem;
}

.newsletter-form {
  display: flex;
  max-width: 500px;
  margin: 0 auto;
}

.newsletter-input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: none;
  border-radius: 4px 0 0 4px;
  font-size: 1rem;
}

.newsletter-btn {
  background-color: var(--accent-color);
  color: var(--text-color);
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 0 4px 4px 0;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.newsletter-btn:hover {
  background-color: var(--secondary-color);
  color: white;
}

/* Footer */
footer {
  padding: 3rem 0;
  background-color: var(--text-color);
  color: white;
}

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

.footer-logo {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-logo span {
  color: var(--primary-color);
}

.footer-links h3 {
  margin-bottom: 1.5rem;
  font-size: 1.25rem;
}

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

.footer-links ul li {
  margin-bottom: 0.75rem;
}

.footer-links ul li a {
  color: var(--medium-gray);
}

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

.footer-bottom {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: var(--medium-gray);
  font-size: 0.875rem;
}

/* Interactive elements */
.category-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.filter-btn {
  background-color: var(--light-gray);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.filter-btn:hover, .filter-btn.active {
  background-color: var(--primary-color);
  color: white;
}

.search-container {
  position: relative;
  max-width: 500px;
  margin: 0 auto 2rem;
}

.search-input {
  width: 100%;
  padding: 0.75rem 1rem;
  padding-right: 3rem;
  border: 1px solid var(--medium-gray);
  border-radius: 4px;
  font-size: 1rem;
}

.search-btn {
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  padding: 0 1rem;
  background: none;
  border: none;
  color: var(--dark-gray);
  cursor: pointer;
}

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

.tool-showcase {
  background-color: var(--light-gray);
  border-radius: 8px;
  padding: 2rem;
  margin-top: 2rem;
}

.tool-showcase-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.tool-showcase-content {
  background-color: var(--background-color);
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.theme-toggle {
  display: flex;
  align-items: center;
  margin-left: auto;
}

.theme-toggle-label {
  margin-right: 0.5rem;
  font-size: 0.875rem;
  color: var(--dark-gray);
}

.theme-toggle-switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 30px;
}

.theme-toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.theme-toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--medium-gray);
  transition: 0.4s;
  border-radius: 30px;
}

.theme-toggle-slider:before {
  position: absolute;
  content: "";
  height: 22px;
  width: 22px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: 0.4s;
  border-radius: 50%;
}

input:checked + .theme-toggle-slider {
  background-color: var(--primary-color);
}

input:checked + .theme-toggle-slider:before {
  transform: translateX(30px);
}

/* Responsive styles */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  nav ul {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .newsletter-form {
    flex-direction: column;
  }
  
  .newsletter-input {
    border-radius: 4px;
    margin-bottom: 1rem;
  }
  
  .newsletter-btn {
    border-radius: 4px;
  }
}

/* Dark mode */
.dark-mode {
  --background-color: #121212;
  --text-color: #f5f5f5;
  --light-gray: #1e1e1e;
  --medium-gray: #333333;
  --dark-gray: #999999;
}

.dark-mode .article-card {
  background-color: #1e1e1e;
}

.dark-mode .header-container {
  background-color: #121212;
}

.dark-mode header {
  background-color: #121212;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.5s ease forwards;
}

.delay-1 {
  animation-delay: 0.1s;
}

.delay-2 {
  animation-delay: 0.2s;
}

.delay-3 {
  animation-delay: 0.3s;
}