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

body {
    font-family: 'Helvetica', 'Arial', sans-serif;
    line-height: 1.6;
    background-color: white;
    color: #333;
    transition: background-color 0.3s, color 0.3s;
    font-smooth: auto;
    -webkit-font-smoothing: antialiased;    
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #333;
        color: white;
    }
    
    .post-date {
        color: #888 !important;
    }
    
    hr {
        border-color: #555;
    }
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 80px;
    padding-bottom: 20px;
}

.logo {
    font-size: 20px;
    font-weight: 900;
    text-decoration: none;
    color: inherit;
    letter-spacing: 1px;
}

.nav-link {
    font-size: 16px;
    font-weight: 700;
    text-decoration: none;
    color: inherit;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.logo:hover,
.nav-link:hover {
    text-decoration: underline;
}

/* Main content */
main {
    flex: 1;
}

.post {
    margin-bottom: 100px;
}

.post-date {
    font-size: 14px;
    color: #666;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.post-title {
    font-size: 36px;
    font-weight: 900;
    margin-bottom: 30px;
    line-height: 1.2;
}

.post-title a {
    text-decoration: none;
    color: inherit;
}

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

.post-preview {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 30px;
}

.post-preview a {
    color: inherit;
}

/* Footer */
footer {
    margin-top: 80px;
}

footer hr {
    border: none;
    border-top: 2px solid #666;
    margin-bottom: 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
}

.copyright {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-link {
    font-weight: 700;
    text-decoration: none;
    color: inherit;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

/* Responsive design */
@media (max-width: 600px) {
    .container {
        padding: 30px 15px;
    }
    
    header {
        margin-bottom: 60px;
    }
    
    .logo {
        font-size: 18px;
    }
    
    .nav-link {
        font-size: 14px;
    }
    
    .post {
        margin-bottom: 80px;
    }
    
    .post-title {
        font-size: 28px;
    }
    
    .post-preview {
        font-size: 16px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

@media (max-width: 400px) {
    .post-title {
        font-size: 24px;
    }
    
    .logo {
        font-size: 18px;
        letter-spacing: 1px;
    }
}