:root{
    --bg:#f9fafb;
    --card:#ffffff;
    --text:#222222;
    --muted:#555555;
    --accent:#1e40af;
    --border:#e5e7eb;
}

*{box-sizing:border-box;}

body{
    margin:0;
    font-family:system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
    background:var(--bg);
    color:var(--text);
}

header{
    position:sticky;
    top:0;
    background:var(--bg);
    border-bottom:1px solid var(--border);
    padding:12px 16px;
}

header h1{
    margin:0;
    font-size:22px;
}

header p{
    margin:4px 0 0 0;
    font-size:13px;
    color:var(--muted);
}

#search{
    margin-top:10px;
    width:100%;
    max-width:380px;
    padding:8px 10px;
    font-size:14px;
    border-radius:6px;
    border:1px solid var(--border);
}

#favorites{
    display:flex;
    gap:6px;
    padding:8px 16px;
    overflow-x:auto;
    border-bottom:1px solid var(--border);
}

main{
    padding:24px;
}

.section{
    margin-bottom:40px;
}

.section h2{
    font-size:18px;
    margin-bottom:10px;
    border-bottom:1px solid var(--border);
}

.chart{
    display:grid;
    grid-template-columns:repeat(auto-fill,minmax(56px,1fr));
    gap:10px;
    margin-top:12px;
}

.unicode-box{
    background:var(--card);
    border:1px solid var(--border);
    border-radius:8px;
    padding:10px 6px;
    text-align:center;
    font-size:26px;
    cursor:pointer;
    transition:0.15s ease;
}

.unicode-box:hover{
    border-color:var(--accent);
    transform:translateY(-1px);
}

.unicode-code{
    font-size:10px;
    color:var(--muted);
}

footer{
    padding:12px 16px;
    font-size:11px;
    color:var(--muted);
    text-align:center;
    border-top:1px solid var(--border);
}