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

body {
  font-family: 'Fira Mono', monospace;
  line-height: 1.6;
  color: #333;
  background-color: #f5f5f5;
}

h1, h2 {
  margin: 1rem 0;
}

header {
  background-color: #4CAF50;
  color: white;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav h1 {
  font-size: 1.5rem;
}

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

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

nav a:hover {
  opacity: 0.8;
}

main {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 2rem;
  min-height: calc(100vh - 200px);
}

.container {
  background-color: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card {
  background-color: #f9f9f9;
  padding: 1.5rem;
  border-radius: 8px;
  margin: 2rem 0;
}

.form-group {
  margin-bottom: 1rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

input[type="text"],
input[type="email"],
input[type="password"],
textarea {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
  font-family: inherit;
}

.btn,
button {
  background-color: #4CAF50;
  color: white;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-family: inherit;
  cursor: pointer;
  transition: background-color 0.3s;
}

button:hover {
  background-color: #45a049;
}

.posts {
  margin-top: 2rem;
}

.post-card {
  background-color: #fff;
  padding: 1.5rem;
  margin-bottom: 1rem;
  border-left: 4px solid #4CAF50;
  border-radius: 4px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.post-card h3 {
  margin-bottom: 0.5rem;
}

.post-card h3 a {
  color: #333;
  text-decoration: none;
}

.post-card h3 a:hover {
  color: #4CAF50;
}

.post-card small {
  color: #666;
  font-style: italic;
}

.post-detail {
  margin-bottom: 2rem;
}

.post-content {
  font-size: 1.1rem;
  margin: 1.5rem 0;
  line-height: 1.8;
}

.post-meta {
  color: #666;
  font-style: italic;
  margin-top: 1rem;
}

.notice {
  background-color: #d4edda;
  color: #155724;
  padding: 1rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}

.error {
  background-color: #f8d7da;
  color: #721c24;
  padding: 1rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}

footer {
  background-color: #333;
  color: white;
  text-align: center;
  padding: 1rem 0;
  margin-top: 2rem;
}

footer p {
  margin: 0;
}