:root {
    --primary-color: #3b82f6;
    --dark-color: #1f2937;
    --light-color: #f9fafb;
    --text-color: #374151;
    --border-color: #e5e7eb;
    --font-family: 'Inter', sans-serif;
}

body {
    font-family: var(--font-family);
    background-color: var(--light-color);
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
    width: 100%;
    box-sizing: border-box;
    flex-grow: 1;
}

h1, h2 {
    color: var(--dark-color);
    line-height: 1.2;
}

header, footer {
    background-color: var(--dark-color);
    color: white;
    text-align: center;
    padding: 1.5rem 1rem;
}

header h1 {
    margin: 0;
    color: white;
}

footer p {
    margin: 0;
    opacity: 0.8;
}

.post-list {
    display: grid;
    gap: 1.5rem;
}

.post-card {
    display: block;
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
}

.post-card h2 {
    margin: 0 0 0.5rem 0;
    color: var(--primary-color);
}

.post-meta {
    font-size: 0.9rem;
    color: #6b7280;
    margin: 0;
}

.post {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
}

.post-content {
    margin-top: 2rem;
}

.back-link {
    display: inline-block;
    margin-top: 2rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
}

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