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

:root {
  --primary-color: #2c3e50;
  --secondary-color: #34495e;
  --accent-color: #3498db;
  --text-color: #333;
  --text-light: #666;
  --bg-color: #ffffff;
  --bg-light: #f8f9fa;
  --border-color: #e0e0e0;
  --font-serif: 'Georgia', 'Times New Roman', serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  --max-width: 800px;
  --spacing: 1.5rem;
}

body {
  font-family: var(--font-sans);
  color: var(--text-color);
  line-height: 1.7;
  background-color: var(--bg-color);
  font-size: 16px;
}

/* Header and Navigation */
.site-header {
  background-color: var(--bg-color);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.95);
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem var(--spacing);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 600;
}

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

.site-title a:hover {
  color: var(--accent-color);
}

/* Hamburger Menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  gap: 5px;
  z-index: 1001;
}

.menu-toggle span {
  width: 25px;
  height: 2px;
  background-color: var(--primary-color);
  transition: all 0.3s ease;
  display: block;
}

.menu-toggle.menu-open span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.menu-open span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.menu-open span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Navigation */
.site-nav {
  display: flex;
}

.nav-menu {
  list-style: none;
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-menu li a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 400;
  transition: color 0.3s ease;
  position: relative;
}

.nav-menu li a:hover {
  color: var(--accent-color);
}

.nav-menu li a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-color);
  transition: width 0.3s ease;
}

.nav-menu li a:hover::after {
  width: 100%;
}

/* Main Content */
.main-content {
  min-height: calc(100vh - 200px);
  padding: 3rem 0;
}

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

/* Home Page */
.home-page {
  width: 100%;
}

.hero {
  text-align: center;
  padding: 6rem 0;
  margin: 0 auto 3rem auto;
  position: relative;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: var(--max-width);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.9);
  z-index: 1;
}

.hero[style*="background-image"]::before {
  background: rgba(0, 0, 0, 0.4);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
}

.hero[style*="background-image"] .hero-title {
  color: #ffffff;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero[style*="background-image"] .hero-description {
  color: #f0f0f0;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 400;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.hero-description {
  font-size: 1.2rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
  color: var(--primary-color);
  margin-bottom: 2rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
}

/* Posts Grid */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.post-card {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 2rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.post-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.post-meta {
  display: flex;
  gap: 1rem;
  align-items: center;
  font-size: 0.875rem;
  color: var(--text-light);
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.post-category a {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 500;
}

.post-category a:hover {
  text-decoration: underline;
}

.post-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: 1rem;
}

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

.post-title a:hover {
  color: var(--accent-color);
}

.post-excerpt {
  color: var(--text-light);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.read-more {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.read-more:hover {
  color: var(--primary-color);
}

/* Single Post */
.post-single {
  padding: 2rem 0;
}

.post-header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.post-header .post-title {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--primary-color);
  margin-bottom: 1rem;
  line-height: 1.3;
}

.post-description {
  font-size: 1.2rem;
  color: var(--text-light);
  font-style: italic;
  margin-top: 1rem;
}

.post-content {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-color);
  text-align: justify;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
  font-family: var(--font-serif);
  color: var(--primary-color);
  margin-top: 2rem;
  margin-bottom: 1rem;
  font-weight: 400;
}

.post-content h2 {
  font-size: 2rem;
}

.post-content h3 {
  font-size: 1.5rem;
}

.post-content p {
  margin-bottom: 1.5rem;
}

.post-content a {
  color: var(--accent-color);
  text-decoration: underline;
}

.post-content a:hover {
  color: var(--primary-color);
}

.post-content ul,
.post-content ol {
  margin-left: 2rem;
  margin-bottom: 1.5rem;
}

.post-content blockquote {
  border-left: 4px solid var(--accent-color);
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--text-light);
}

.post-content code {
  background-color: var(--bg-light);
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-size: 0.9em;
}

.post-content pre {
  background-color: var(--bg-light);
  padding: 1rem;
  border-radius: 4px;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.post-content pre code {
  background: none;
  padding: 0;
}

.post-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.post-tags {
  margin-bottom: 2rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.post-tags span {
  color: var(--text-light);
  font-weight: 500;
}

.tag {
  background-color: var(--bg-light);
  color: var(--text-color);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  text-decoration: none;
  font-size: 0.875rem;
  transition: background-color 0.3s ease;
}

.tag:hover {
  background-color: var(--accent-color);
  color: white;
}

.post-nav {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  margin-top: 2rem;
}

.nav-link {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

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

/* List Page */
.list-page {
  padding: 2rem 0;
}

.page-header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.page-title {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.page-description {
  font-size: 1.1rem;
  color: var(--text-light);
}

.posts-list {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.post-item {
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.post-item:last-child {
  border-bottom: none;
}

.post-item-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
  margin-bottom: 1rem;
}

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

.post-item-title a:hover {
  color: var(--accent-color);
}

.post-item-excerpt {
  color: var(--text-light);
  margin-bottom: 1rem;
  line-height: 1.6;
}

/* Categories */
.categories-section {
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border-color);
}

.categories-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.category-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background-color: var(--bg-light);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  text-decoration: none;
  color: var(--text-color);
  transition: all 0.3s ease;
}

.category-link:hover {
  background-color: var(--accent-color);
  color: white;
  border-color: var(--accent-color);
}

.category-name {
  font-weight: 500;
}

.category-count {
  font-size: 0.875rem;
  opacity: 0.7;
}

/* Terms Page */
.terms-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
}

.term-item {
  padding: 1.5rem;
  background-color: var(--bg-light);
  border-radius: 4px;
  border: 1px solid var(--border-color);
}

.term-name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
}

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

.term-name a:hover {
  color: var(--accent-color);
}

.term-count {
  color: var(--text-light);
  font-size: 0.875rem;
  margin-left: 0.5rem;
}

/* Footer */
.site-footer {
  background-color: var(--bg-light);
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  margin-top: 4rem;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing);
  text-align: center;
  color: var(--text-light);
  font-size: 0.875rem;
}

.no-posts {
  text-align: center;
  color: var(--text-light);
  font-style: italic;
  padding: 3rem 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .site-nav.nav-open {
    max-height: 500px;
  }

  .nav-menu {
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem var(--spacing);
    gap: 0;
  }

  .nav-menu li {
    width: 100%;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
  }

  .nav-menu li:last-child {
    border-bottom: none;
  }

  .nav-menu li a::after {
    display: none;
  }

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

  .hero-description {
    font-size: 1rem;
  }

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

  .post-header .post-title {
    font-size: 2rem;
  }

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

  .post-item-title {
    font-size: 1.5rem;
  }

  .post-nav {
    flex-direction: column;
  }

  .container {
    padding: 0 1rem;
  }

  .header-container {
    padding: 1rem;
  }
}

@media (min-width: 1200px) {
  .hero {
    max-width: 1200px;
  }
  
  .hero[style*="background-image"] {
    background-size: cover;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 3rem 0;
    min-height: 300px;
  }

  .main-content {
    padding: 2rem 0;
  }
}