/* CSS Variables */
:root {
  --primary: #1d4ed8;
  --secondary: #f59e0b;
  --bg: #f9fafb;
  --card: #ffffff;
  --text: #1e293b;
  --muted: #6b7280;

  /* Additional colors */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --border: #e5e7eb;
  --hover: #f3f4f6;

  /* Font sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;

  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;

  /* Border radius */
  --radius-sm: 0.25rem;
  --radius: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Roboto", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  font-size: var(--text-base);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Merriweather", serif;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-4);
}

h1 {
  font-size: var(--text-4xl);
}
h2 {
  font-size: var(--text-3xl);
}
h3 {
  font-size: var(--text-2xl);
}
h4 {
  font-size: var(--text-xl);
}

p {
  margin-bottom: var(--spacing-4);
  line-height: 1.6;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3) var(--spacing-6);
  border: none;
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

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

.btn-primary:hover {
  background-color: #1e40af;
  transform: translateY(-1px);
}

.btn-premium {
  background-color: var(--secondary);
  color: white;
  font-weight: 600;
}

.btn-premium:hover {
  background-color: #d97706;
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--card);
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}

.navbar {
  padding: var(--spacing-4) 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: "Merriweather", serif;
  font-size: var(--text-2xl);
  font-weight: 900;
  color: var(--primary);
  margin: 0;
}

.nav-menu {
  display: flex;
  gap: var(--spacing-8);
}

.nav-link {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  padding: var(--spacing-2) 0;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.search-container {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input {
  padding: var(--spacing-2) var(--spacing-4);
  padding-right: var(--spacing-12);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: var(--text-sm);
  width: 200px;
  transition: all 0.2s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgb(29 78 216 / 0.1);
}

.search-btn {
  position: absolute;
  right: var(--spacing-2);
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: var(--spacing-1);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: var(--spacing-1);
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--text);
  transition: all 0.3s ease;
}

/* Hero Section */
.hero {
  margin-top: 80px;
  padding: var(--spacing-16) 0;
  background: linear-gradient(135deg, #1e40af 0%, var(--primary) 100%);
  color: white;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-12);
  align-items: center;
}

.hero-category {
  display: inline-block;
  background-color: var(--secondary);
  color: white;
  font-size: var(--text-xs);
  font-weight: 700;
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-4);
}

.hero-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--spacing-4);
  line-height: 1.1;
}

.hero-subtitle {
  font-size: var(--text-lg);
  opacity: 0.9;
  margin-bottom: var(--spacing-6);
}

.hero-btn {
  background-color: var(--secondary);
  border: none;
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--text-base);
}

.hero-btn:hover {
  background-color: #d97706;
}

.hero-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* Section Titles */
.section-title {
  text-align: center;
  margin-bottom: var(--spacing-12);
  position: relative;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -var(--spacing-4);
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background-color: var(--primary);
  border-radius: var(--radius-sm);
}

/* Latest News */
.latest-news {
  padding: var(--spacing-16) 0;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-8);
}

.news-card {
  background-color: var(--card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  cursor: pointer;
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.news-image {
  height: 200px;
  overflow: hidden;
}

.news-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform 0.3s ease;
}

.news-card:hover .news-image img {
  transform: scale(1.05);
}

.news-content {
  padding: var(--spacing-6);
}

.news-category {
  display: inline-block;
  background-color: var(--primary);
  color: white;
  font-size: var(--text-xs);
  font-weight: 700;
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-3);
  text-transform: uppercase;
}

.news-title {
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-3);
  color: var(--text);
  transition: color 0.2s ease;
}

.news-card:hover .news-title {
  color: var(--primary);
}

.news-date {
  color: var(--muted);
  font-size: var(--text-sm);
}

/* Category News */
.category-news {
  padding: var(--spacing-16) 0;
  background-color: var(--card);
}

.category-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-12);
}

.tab-btn {
  padding: var(--spacing-3) var(--spacing-6);
  border: 1px solid var(--border);
  background-color: transparent;
  color: var(--text);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 500;
}

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

.category-content {
  min-height: 400px;
}

/* Popular Articles */
.popular-articles {
  padding: var(--spacing-16) 0;
}

.popular-articles .container {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-12);
}

.article-item {
  display: flex;
  gap: var(--spacing-4);
  padding: var(--spacing-6);
  background-color: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  margin-bottom: var(--spacing-6);
}

.article-item img {
  width: 150px;
  height: 100px;
  object-fit: cover;
  border-radius: var(--radius);
}

.article-info h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-2);
}

.sidebar {
  background-color: var(--card);
  padding: var(--spacing-8);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  height: fit-content;
}

.sidebar-title {
  margin-bottom: var(--spacing-6);
  color: var(--primary);
}

.popular-item {
  padding-bottom: var(--spacing-4);
  margin-bottom: var(--spacing-4);
  border-bottom: 1px solid var(--border);
}

.popular-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.popular-title {
  font-size: var(--text-base);
  margin-bottom: var(--spacing-2);
  color: var(--text);
  cursor: pointer;
  transition: color 0.2s ease;
}

.popular-title:hover {
  color: var(--primary);
}

.popular-date {
  color: var(--muted);
  font-size: var(--text-sm);
}

/* Newsletter */
.newsletter {
  padding: var(--spacing-16) 0;
  background: linear-gradient(135deg, var(--primary) 0%, #1e40af 100%);
  color: white;
}

.newsletter-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.newsletter-title {
  color: white;
  margin-bottom: var(--spacing-4);
}

.newsletter-desc {
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-8);
  opacity: 0.9;
}

.newsletter-form {
  max-width: 400px;
  margin: 0 auto;
}

.form-group {
  display: flex;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-4);
}

.form-input {
  flex: 1;
  padding: var(--spacing-4);
  border: none;
  border-radius: var(--radius);
  font-size: var(--text-base);
}

.form-input:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

.error-message {
  color: #fca5a5;
  font-size: var(--text-sm);
  margin-top: var(--spacing-2);
  display: none;
}

.success-message {
  color: #86efac;
  font-size: var(--text-sm);
  margin-top: var(--spacing-2);
  display: none;
}

.error-message.show,
.success-message.show {
  display: block;
}

/* About */
.about {
  padding: var(--spacing-16) 0;
  background-color: var(--card);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-12);
  align-items: center;
}

.about-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-6);
  margin-top: var(--spacing-8);
}

.feature {
  padding: var(--spacing-6);
  background-color: var(--bg);
  border-radius: var(--radius-lg);
  text-align: center;
}

.feature h3 {
  color: var(--primary);
  margin-bottom: var(--spacing-3);
}

.about-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* Testimonials */
.testimonials {
  padding: var(--spacing-16) 0;
}

.testimonial-carousel {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.testimonial-track {
  display: flex;
  transition: transform 0.5s ease;
}

.testimonial-card {
  min-width: 100%;
  text-align: center;
  padding: var(--spacing-8);
  background-color: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.5s ease;
}

.testimonial-card.active {
  opacity: 1;
  transform: translateY(0);
}

.testimonial-avatar {
  margin: 0 auto var(--spacing-6);
  width: 80px;
  height: 80px;
  border-radius: 50%;
  overflow: hidden;
}

.testimonial-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.testimonial-quote {
  font-size: var(--text-lg);
  line-height: 1.6;
  margin-bottom: var(--spacing-6);
  font-style: italic;
}

.testimonial-author strong {
  display: block;
  font-weight: 700;
  margin-bottom: var(--spacing-1);
}

.testimonial-author span {
  color: var(--muted);
  font-size: var(--text-sm);
}

.carousel-indicators {
  display: flex;
  justify-content: center;
  gap: var(--spacing-2);
  margin-top: var(--spacing-8);
}

.indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: none;
  background-color: var(--border);
  cursor: pointer;
  transition: all 0.2s ease;
}

.indicator.active {
  background-color: var(--primary);
}

/* FAQ */
.faq {
  padding: var(--spacing-16) 0;
  background-color: var(--card);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-question {
  width: 100%;
  padding: var(--spacing-6) 0;
  background: none;
  border: none;
  text-align: left;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.2s ease;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-icon {
  transition: transform 0.2s ease;
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-answer.open {
  max-height: 200px;
  padding-bottom: var(--spacing-6);
}

.faq-answer p {
  color: var(--muted);
  line-height: 1.6;
}

/* Footer */
.footer {
  background-color: var(--text);
  color: white;
  padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-12);
}

.footer-title {
  font-family: "Merriweather", serif;
  font-size: var(--text-2xl);
  color: var(--secondary);
  margin-bottom: var(--spacing-4);
}

.footer-desc {
  color: #d1d5db;
  margin-bottom: var(--spacing-6);
}

.footer-subtitle {
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-4);
  color: white;
}

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

.footer-links li {
  margin-bottom: var(--spacing-2);
}

.footer-links a {
  color: #d1d5db;
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.social-links {
  display: flex;
  gap: var(--spacing-4);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: white;
  text-decoration: none;
  transition: all 0.2s ease;
}

.social-link:hover {
  background-color: var(--secondary);
  transform: translateY(-2px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-8);
  border-top: 1px solid #374151;
  color: #d1d5db;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeInUp 0.6s ease forwards;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-container,
  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    text-align: center;
  }

  .popular-articles .container {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-actions {
    gap: var(--spacing-2);
  }

  .search-input {
    width: 150px;
  }

  .hero {
    padding: var(--spacing-12) 0;
  }

  .hero-title {
    font-size: var(--text-3xl);
  }

  .news-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }

  .category-tabs {
    flex-wrap: wrap;
    gap: var(--spacing-2);
  }

  .tab-btn {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--text-sm);
  }

  .form-group {
    flex-direction: column;
  }

  .about-features {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .article-item {
    flex-direction: column;
  }

  .article-item img {
    width: 100%;
    height: 200px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-3);
  }

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

  .hero-title {
    font-size: var(--text-2xl);
  }

  .section-title {
    font-size: var(--text-2xl);
  }

  .news-card {
    margin-bottom: var(--spacing-4);
  }

  .testimonial-card {
    padding: var(--spacing-6);
  }

  .testimonial-quote {
    font-size: var(--text-base);
  }
}