:root {
--bg: #ffffff;
--text: #111;
--muted: #666;
--border: #e6e6e6;
}

.dark {
--bg: #0f0f0f;
--text: #f5f5f5;
--muted: #aaa;
--border: #333;
}

body {
font-family: system-ui, sans-serif;
background: var(--bg);
color: var(--text);
margin:0;
line-height:1.6;
}

/* navbar */

.navbar{
display:flex;
justify-content:space-between;
align-items:center;
max-width:900px;
margin:auto;
padding:20px;
border-bottom:1px solid var(--border);
}

.nav-left a{
margin-right:18px;
text-decoration:none;
color:var(--text);
}

.nav-left a:hover{
text-decoration:underline;
}

#themeToggle{
background:none;
border:none;
color:var(--muted);
cursor:pointer;
}

/* content */

main{
max-width:700px;
margin:auto;
padding:40px 20px;
}

.tagline{
color:var(--muted);
}

.post-list li{
margin-bottom:10px;
}

.date{
color:var(--muted);
font-size:0.9rem;
margin-left:10px;
}