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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: #333;
  background: #f4f4f4;
}

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

/* Navigation */
.navbar {
  background: #2c3e50;
  color: white;
  padding: 1rem 0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

.nav-brand a {
  color: white;
  text-decoration: none;
  font-size: 1.5rem;
  font-weight: bold;
}

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

.nav-menu a {
  color: white;
  text-decoration: none;
  transition: color 0.3s;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: #3498db;
}

/* Main Content */
main {
  min-height: calc(100vh - 180px);
  padding: 2rem 0;
}

h1 {
  color: #2c3e50;
  margin-bottom: 1.5rem;
  font-size: 2.5rem;
}

h2 {
  color: #34495e;
  margin-bottom: 1rem;
}

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

.article-card {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s, box-shadow 0.3s;
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.article-card h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.article-card h2 a {
  color: #2c3e50;
  text-decoration: none;
}

.article-card h2 a:hover {
  color: #3498db;
}

.article-date {
  color: #7f8c8d;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.article-preview {
  color: #555;
  margin-bottom: 1rem;
}

.read-more {
  color: #3498db;
  text-decoration: none;
  font-weight: 500;
}

.read-more:hover {
  text-decoration: underline;
}

.no-articles {
  text-align: center;
  padding: 3rem;
  background: white;
  border-radius: 8px;
  font-size: 1.1rem;
}

.no-articles a {
  color: #3498db;
}

/* Individual Article */
.article-full {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.article-full h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.article-content {
  margin: 2rem 0;
  line-height: 1.8;
  font-size: 1.1rem;
  white-space: pre-wrap;
}

.back-link {
  display: inline-block;
  margin-top: 2rem;
  color: #3498db;
  text-decoration: none;
}

.back-link:hover {
  text-decoration: underline;
}

/* Admin Panel */
.admin-section {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  margin-bottom: 2rem;
}

.article-form .form-group {
  margin-bottom: 1.5rem;
}

.article-form label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: #2c3e50;
}

.article-form input,
.article-form textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
  font-family: inherit;
}

.article-form textarea {
  resize: vertical;
}

.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  transition: background 0.3s;
}

.btn-primary {
  background: #3498db;
  color: white;
}

.btn-primary:hover {
  background: #2980b9;
}

.btn-delete {
  background: #e74c3c;
  color: white;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
}

.btn-delete:hover {
  background: #c0392b;
}

/* Articles Table */
.articles-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

.articles-table th,
.articles-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

.articles-table th {
  background: #f8f9fa;
  font-weight: 600;
  color: #2c3e50;
}

.articles-table a {
  color: #3498db;
  text-decoration: none;
}

.articles-table a:hover {
  text-decoration: underline;
}

/* Content Pages */
.content-page {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  line-height: 1.8;
}

.content-page p {
  margin-bottom: 1rem;
}

.content-page ul {
  margin-left: 2rem;
  margin-bottom: 1rem;
}

.content-page code {
  background: #f4f4f4;
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-family: 'Courier New', monospace;
}

/* Footer */
footer {
  background: #2c3e50;
  color: white;
  padding: 2rem 0;
  text-align: center;
  margin-top: 3rem;
}

/* Responsive */
@media (max-width: 768px) {
  .navbar .container {
    flex-direction: column;
    gap: 1rem;
  }
  
  .nav-menu {
    gap: 1rem;
  }
  
  .articles-grid {
    grid-template-columns: 1fr;
  }
  
  h1 {
    font-size: 2rem;
  }
}