:root {
  /* Light mode colors */
  --primary-purple: #9966cc;
  --secondary-purple: #b884d4;
  --accent-purple: #7a4ba3;
  --bg-color: #ffffff;
  --text-color: #333333;
  --text-secondary: #666666;
  --card-bg: #f8f9fa;
  --border-color: #e9ecef;
  --shadow: rgba(153, 102, 204, 0.1);
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --primary-purple: #b884d4;
    --secondary-purple: #9966cc;
    --accent-purple: #d4a6e6;
    --bg-color: #1a1a1a;
    --text-color: #ffffff;
    --text-secondary: #cccccc;
    --card-bg: #2d2d2d;
    --border-color: #404040;
    --shadow: rgba(184, 132, 212, 0.2);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: Avenir Next, Arial, sans-serif;
  line-height: 1.6;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Navigation */
.navbar {
  background-color: var(--bg-color);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 0;
  margin-bottom: 2rem;
  box-shadow: 0 2px 10px var(--shadow);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.logo {
  font-size: 1.3rem;
  font-weight: bold;
  color: var(--primary-purple);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  gap: 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.nav-link {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--primary-purple);
  color: white;
  text-decoration: none;
  border-radius: 20px;
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 3px 12px var(--shadow);
  border: 2px solid transparent;
  cursor: pointer;
}

.nav-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 18px var(--shadow);
  border: 2px solid var(--accent-purple);
}

.nav-link.active {
  background: var(--bg-color);
  color: var(--primary-purple);
  border: 2px solid var(--primary-purple);
  box-shadow: 0 3px 12px var(--shadow);
}

/* Main content */
.main-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

h1 {
  color: var(--primary-purple);
  text-align: center;
  margin-bottom: 30px;
}

h2 {
  color: var(--primary-purple);
  margin-top: 5px;
  margin-bottom: 15px;
}

p {
  margin-bottom: 15px;
  color: var(--text-color);
}

img {
  max-width: 100%;
  width: 100%;
  height: auto;
  display: block;
  margin: 20px auto;
  object-fit: contain;
  box-sizing: border-box;
  border-radius: 10px;
  box-shadow: 0 4px 15px var(--shadow);
}

a {
  color: var(--primary-purple);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Cards */
.card {
  background-color: var(--card-bg);
  border-radius: 15px;
  padding: 20px;
  margin: 20px 0;
  box-shadow: 0 4px 15px var(--shadow);
  border: 1px solid var(--border-color);
}

.game-card {
  background-color: var(--card-bg);
  border-radius: 15px;
  padding: 20px;
  margin: 20px 0;
  box-shadow: 0 4px 15px var(--shadow);
  border: 1px solid var(--border-color);
}

.article-card {
  background-color: var(--card-bg);
  border-radius: 15px;
  padding: 25px;
  margin: 25px 0;
  box-shadow: 0 4px 15px var(--shadow);
  border: 1px solid var(--border-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.article-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px var(--shadow);
}

.article-date {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.article-title {
  color: var(--primary-purple);
  margin: 0 0 15px 0;
  font-size: 1.3rem;
}

.book-list {
  list-style: none;
  padding: 0;
}

.book-list li {
  background-color: var(--card-bg);
  margin: 15px 0;
  padding: 20px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 8px var(--shadow);
}

.book-list strong {
  color: var(--primary-purple);
}

/* Footer */
.footer {
  background-color: var(--card-bg);
  border-top: 1px solid var(--border-color);
  padding: 1rem 0;
  margin-top: 2rem;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer p {
  margin: 0.25rem 0;
}

.footer a {
  color: var(--primary-purple);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

/* Mobile responsive styles */
@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
    gap: 1rem;
  }
  
  .nav-menu {
    justify-content: center;
  }
  
  .main-content {
    padding: 0 15px;
  }
  
  h1 {
    font-size: 1.8em;
    margin-bottom: 20px;
  }
  
  p {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .main-content {
    padding: 0 10px;
  }
  
  h1 {
    font-size: 1.5em;
  }
  
  .nav-link {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
  }
  
  .logo {
    font-size: 1.1rem;
  }
}