:root {
  --color-primary: #1a1a1a;
  --color-secondary: #2c3e50;
  --color-accent: #c9a961;
  --color-background: #ffffff;
  --color-surface: #f8f9fa;
  --color-text: #1a1a1a;
  --color-text-secondary: #666666;
  --color-border: #e0e0e0;
  --spacing-unit: 8px;
  --transition-speed: 0.3s;
  --max-width: 1200px;
  --header-height: 80px;
}

[data-theme="dark"] {
  --color-primary: #ffffff;
  --color-secondary: #e0e0e0;
  --color-accent: #c9a961;
  --color-background: #1a1a1a;
  --color-surface: #2c2c2c;
  --color-text: #ffffff;
  --color-text-secondary: #b3b3b3;
  --color-border: #404040;
}

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

body {
  font-family: 'Georgia', 'Times New Roman', serif;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-background);
  transition: background-color var(--transition-speed), color var(--transition-speed);
  overflow-x: hidden;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 calc(var(--spacing-unit) * 3);
}



.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #E9B542;
  transition: transform var(--transition-speed);
}

.theme-toggle:hover {
  transform: rotate(20deg);
}

.theme-toggle .moon-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon {
  display: block;
}

.hero {
  padding: calc(var(--spacing-unit) * 6) 0;
  background-color: var(--color-surface);
}

.search-bar {
  max-width: 600px;
  margin: 0 auto calc(var(--spacing-unit) * 6);
  position: relative;
}

.search-bar input {
  width: 100%;
  padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 6) calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 2);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: 'Helvetica', 'Arial', sans-serif;
  background-color: var(--color-background);
  color: var(--color-text);
  transition: border-color var(--transition-speed);
}

.search-bar input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.search-bar svg {
  position: absolute;
  right: calc(var(--spacing-unit) * 2);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-secondary);
}

.featured-article {
  background-color: var(--color-background);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
}

.featured-article:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.featured-article img {
  width: 100%;
  height: 500px;
  object-fit: cover;
}

.featured-content {
  padding: calc(var(--spacing-unit) * 5);
}

.featured-category {
  display: inline-block;
  color: var(--color-accent);
  font-family: 'Helvetica', 'Arial', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.featured-article h2 {
  font-size: 2.5rem;
  line-height: 1.2;
  margin-bottom: calc(var(--spacing-unit) * 3);
  color: var(--color-text);
}

.featured-meta {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing-unit) * 3);
  font-family: 'Helvetica', 'Arial', sans-serif;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: calc(var(--spacing-unit) * 3);
}

.featured-excerpt {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: calc(var(--spacing-unit) * 4);
  line-height: 1.7;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--spacing-unit));
  padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 4);
  background-color: var(--color-text);
  color: var(--color-background);
  text-decoration: none;
  font-family: 'Helvetica', 'Arial', sans-serif;
  font-weight: 600;
  border-radius: 6px;
  transition: all var(--transition-speed);
}

.read-more:hover {
  background-color: var(--color-accent);
  transform: translateX(4px);
}

.articles-section {
  padding: calc(var(--spacing-unit) * 10) 0;
}

.section-title {
  font-size: 2rem;
  margin-bottom: calc(var(--spacing-unit) * 6);
  text-align: center;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: calc(var(--spacing-unit) * 4);
}

.article-card {
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  transition: all var(--transition-speed);
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
  cursor: pointer;
}

.article-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
  border-color: var(--color-accent);
}

.article-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.article-card-content {
  padding: calc(var(--spacing-unit) * 3);
}

.article-category {
  display: inline-block;
  color: var(--color-accent);
  font-family: 'Helvetica', 'Arial', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: calc(var(--spacing-unit));
}

.article-card h3 {
  font-size: 1.25rem;
  line-height: 1.4;
  margin-bottom: calc(var(--spacing-unit) * 2);
  color: var(--color-text);
}

.article-date {
  font-family: 'Helvetica', 'Arial', sans-serif;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.article-excerpt {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.article-page {
  padding: calc(var(--spacing-unit) * 8) 0;
  min-height: calc(100vh - var(--header-height) - 300px);
}

.article-container {
  max-width: 800px;
}

.back-button {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--spacing-unit));
  color: var(--color-text-secondary);
  text-decoration: none;
  font-family: 'Helvetica', 'Arial', sans-serif;
  font-size: 0.95rem;
  margin-bottom: calc(var(--spacing-unit) * 4);
  transition: color var(--transition-speed);
}

.back-button:hover {
  color: var(--color-text);
}

.article-content {
  animation: fadeIn 0.8s ease;
}

.article-header {
  margin-bottom: calc(var(--spacing-unit) * 5);
}

.article-title {
  font-size: 2.75rem;
  line-height: 1.2;
  margin-bottom: calc(var(--spacing-unit) * 3);
}

.article-author-date {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing-unit) * 2);
  font-family: 'Helvetica', 'Arial', sans-serif;
  color: var(--color-text-secondary);
  margin-bottom: calc(var(--spacing-unit) * 4);
}

.article-image {
  width: 100%;
  height: 450px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: calc(var(--spacing-unit) * 5);
}

.article-body {
  font-size: 1.1rem;
  line-height: 1.8;
}

.article-body p {
  margin-bottom: calc(var(--spacing-unit) * 3);
}

.article-share {
  margin-top: calc(var(--spacing-unit) * 8);
  padding-top: calc(var(--spacing-unit) * 4);
  border-top: 1px solid var(--color-border);
}

.article-share h3 {
  font-size: 1.2rem;
  margin-bottom: calc(var(--spacing-unit) * 3);
}

.share-buttons {
  display: flex;
  gap: calc(var(--spacing-unit) * 2);
  flex-wrap: wrap;
}

.share-button {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing-unit));
  padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-family: 'Helvetica', 'Arial', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-speed);
}

.share-button:hover {
  background-color: var(--color-text);
  color: var(--color-background);
  border-color: var(--color-text);
}

.about-page {
  padding: calc(var(--spacing-unit) * 8) 0;
  min-height: calc(100vh - var(--header-height) - 300px);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: calc(var(--spacing-unit) * 6);
  align-items: start;
  animation: fadeIn 0.8s ease;
}

.about-image img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.about-text h1 {
  font-size: 2.5rem;
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.about-text h2 {
  font-size: 1.8rem;
  color: var(--color-accent);
  margin-bottom: calc(var(--spacing-unit));
}

.about-subtitle {
  font-family: 'Helvetica', 'Arial', sans-serif;
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  margin-bottom: calc(var(--spacing-unit) * 4);
}

.about-bio {
  font-size: 1.05rem;
  line-height: 1.8;
}

.about-bio p {
  margin-bottom: calc(var(--spacing-unit) * 3);
}

.about-bio h3 {
  font-size: 1.4rem;
  margin-top: calc(var(--spacing-unit) * 5);
  margin-bottom: calc(var(--spacing-unit) * 3);
}

.about-values {
  list-style: none;
  margin: calc(var(--spacing-unit) * 3) 0;
}

.about-values li {
  padding-left: calc(var(--spacing-unit) * 3);
  margin-bottom: calc(var(--spacing-unit) * 2);
  position: relative;
}

.about-values li::before {
  content: '■';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

.about-quote {
  font-style: italic;
  font-size: 1.2rem;
  color: var(--color-accent);
  border-left: 4px solid var(--color-accent);
  padding-left: calc(var(--spacing-unit) * 3);
  margin: calc(var(--spacing-unit) * 5) 0;
}

.contact-page {
  padding: calc(var(--spacing-unit) * 8) 0;
  min-height: calc(100vh - var(--header-height) - 300px);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: calc(var(--spacing-unit) * 8);
  animation: fadeIn 0.8s ease;
}

.contact-info h1 {
  font-size: 2.5rem;
  margin-bottom: calc(var(--spacing-unit) * 3);
}

.contact-intro {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: calc(var(--spacing-unit) * 5);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing-unit) * 4);
}

.contact-detail {
  display: flex;
  gap: calc(var(--spacing-unit) * 2);
}

.contact-detail svg {
  flex-shrink: 0;
  color: var(--color-accent);
}

.contact-detail h3 {
  font-size: 1.1rem;
  margin-bottom: calc(var(--spacing-unit));
}

.contact-detail p {
  color: var(--color-text-secondary);
}

.contact-form-wrapper {
  position: relative;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing-unit) * 3);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing-unit));
}

.form-group label {
  font-family: 'Helvetica', 'Arial', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  padding: calc(var(--spacing-unit) * 1.5);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-family: 'Helvetica', 'Arial', sans-serif;
  font-size: 1rem;
  background-color: var(--color-background);
  color: var(--color-text);
  transition: border-color var(--transition-speed);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.submit-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: calc(var(--spacing-unit));
  padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 4);
  background-color: var(--color-text);
  color: var(--color-background);
  border: none;
  border-radius: 6px;
  font-family: 'Helvetica', 'Arial', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-speed);
}

.submit-button:hover {
  background-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.form-message {
  margin-top: calc(var(--spacing-unit) * 3);
  padding: calc(var(--spacing-unit) * 2);
  border-radius: 6px;
  font-family: 'Helvetica', 'Arial', sans-serif;
  font-size: 0.95rem;
  text-align: center;
  display: none;
}

.form-message.success {
  display: block;
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.form-message.error {
  display: block;
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}


@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

@media (max-width: 768px) {
  .header-content {
    height: 70px;
  }

  .logo {
    font-size: 1.2rem;
  }

  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: calc(var(--spacing-unit) * 3) 0;
    transform: translateY(-100%);
    opacity: 0;
    transition: all var(--transition-speed);
    pointer-events: none;
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-link.active::after {
    display: none;
  }

  .hero {
    padding: calc(var(--spacing-unit) * 4) 0;
  }

  .featured-article img {
    height: 300px;
  }

  .featured-content {
    padding: calc(var(--spacing-unit) * 3);
  }

  .featured-article h2 {
    font-size: 1.75rem;
  }

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

  .article-title {
    font-size: 2rem;
  }

  .article-image {
    height: 300px;
  }

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

  .about-text h1 {
    font-size: 2rem;
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: calc(var(--spacing-unit) * 5);
  }

  .footer-content {
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 3);
    text-align: center;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.share-buttons {
  display: flex;
  gap: calc(var(--spacing-unit) * 2);
  flex-wrap: wrap;
}

.share-button {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing-unit));
  padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-family: "Helvetica", "Arial", sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-speed);
}

.back-button {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: #2c3e50;
  margin-bottom: 20px;
}

.article-content img {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

.article-share {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid #0f0e0eff;
}

.comments-section {
  margin-top: 40px;
  border-top: 1px solid #ddd;
  padding-top: 20px;
}

#commentsList {
  margin-bottom: 20px;
}

.comment {
  border-bottom: 1px solid #eee;
  padding: 10px 0;
}

.comment strong {
  color: #2c3e50;
}

.comment small {
  color: #888;
  font-size: 0.9em;
}

#commentForm input,
#commentForm textarea {
  width: 100%;
  margin-bottom: 10px;
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 5px;
}

#commentForm button {
  background: #2c3e50;
  color: #fff;
  border: none;
  padding: 10px 20px;
  cursor: pointer;
  border-radius: 5px;
}

#commentForm button:hover {
  background: #34495e;
}