:root {
    --bg: #0d1117; --surface: #161b22; --border: #30363d;
    --text: #e6edf3; --muted: #8b949e; --accent: #58a6ff;
    --accent-hover: #79c0ff; --green: #3fb950; --orange: #d29922;
    --purple: #bc8cff; --red: #f85149;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    background: var(--bg); color: var(--text); line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

/* Nav */
nav {
    padding: 12px 24px; border-bottom: 1px solid var(--border);
    display: flex; align-items: center; gap: 24px; font-size: 0.9em;
}
nav .logo { font-weight: 700; font-size: 1.1em; text-decoration: none !important; }
nav .logo span { color: var(--accent); }
nav .logo::before { content: '\1F4DC '; }
nav { flex-wrap: wrap; }
nav a { color: var(--muted); }
nav a:hover { color: var(--text); text-decoration: none; }
nav a.active { color: var(--accent); }

/* Content */
.container { max-width: 820px; margin: 0 auto; padding: 0 24px; }
.page-header { padding: 48px 0 32px; border-bottom: 1px solid var(--border); margin-bottom: 40px; }
.page-header h1 { font-size: 2.2em; margin-bottom: 8px; letter-spacing: -0.02em; }
.page-header h1 span { color: var(--accent); }
.page-header .subtitle { color: var(--muted); font-size: 1.1em; }

h2 { font-size: 1.5em; margin: 40px 0 16px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
h3 { font-size: 1.15em; margin: 28px 0 12px; color: var(--accent); }
p { margin-bottom: 16px; }
ul, ol { margin: 0 0 16px 24px; }
li { margin-bottom: 6px; }

pre {
    background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
    padding: 16px 20px; overflow-x: auto; margin-bottom: 20px;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.88em; line-height: 1.5;
}
code {
    background: var(--surface); padding: 2px 6px; border-radius: 4px;
    font-family: 'SFMono-Regular', Consolas, monospace; font-size: 0.9em;
}
pre code { background: none; padding: 0; }

.kw { color: var(--purple); } .fn { color: var(--accent); }
.str { color: var(--green); } .cmt { color: var(--muted); }

table {
    width: 100%; border-collapse: collapse; margin-bottom: 20px; font-size: 0.92em;
}
th { text-align: left; padding: 10px 14px; border-bottom: 2px solid var(--border); color: var(--muted); font-weight: 600; }
td { padding: 10px 14px; border-bottom: 1px solid var(--border); }

.callout {
    background: var(--surface); border: 1px solid var(--border); border-left: 3px solid var(--accent);
    border-radius: 6px; padding: 16px 20px; margin-bottom: 20px;
}
.callout.green { border-left-color: var(--green); }
.callout.orange { border-left-color: var(--orange); }
.callout.purple { border-left-color: var(--purple); }
.callout strong { display: block; margin-bottom: 4px; }

.comparison { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 20px; }
@media (max-width: 600px) { .comparison { grid-template-columns: 1fr; } }
.comparison .card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 8px; padding: 16px 20px;
}
.comparison .card h4 { margin-bottom: 8px; }

.badge {
    display: inline-block; padding: 3px 10px; border-radius: 12px;
    font-size: 0.8em; font-weight: 600;
}
.badge-green { background: #1b3a1f; color: var(--green); }
.badge-orange { background: #3a2e1b; color: var(--orange); }
.badge-purple { background: #2a1b3a; color: var(--purple); }
.badge-red { background: #3a1b1b; color: var(--red); }

footer {
    text-align: center; padding: 40px 20px; color: var(--muted);
    font-size: 0.85em; border-top: 1px solid var(--border); margin-top: 60px;
}

/* ===== CANONICAL VISUAL IDENTITY (emmaleonhart.com/_identity/) =====
   Appended last so it overrides the Pewter :root above via the
   cascade. Semantic data vars (--green/--orange/--purple/--red) are
   intentionally NOT redefined — they keep their meaning. */
:root{
    --bg:#07070c; --surface:#11111b; --border:#1d1d2c;
    --text:#d4d4e0; --muted:#8c8caa; --accent:#8b9bff; --accent-hover:#b0bcff;
}
html[data-theme="light"]{
    --bg:#f4f4f8; --surface:#ffffff; --border:#dadae6;
    --text:#2b2b38; --muted:#5c5c74; --accent:#5160dd; --accent-hover:#3a48c4;
}
body{transition:background .35s ease,color .35s ease}
.theme-toggle{position:fixed;top:18px;right:18px;z-index:200;width:40px;height:40px;
    display:flex;align-items:center;justify-content:center;background:var(--surface);
    border:1px solid var(--border);border-radius:999px;color:var(--muted);cursor:pointer;
    transition:color .2s,border-color .2s,background .2s,transform .2s}
.theme-toggle:hover{color:var(--accent-hover);border-color:var(--accent);transform:translateY(-1px)}
.theme-toggle svg{width:18px;height:18px;display:none}
html[data-theme="dark"] .theme-toggle .icon-sun{display:block}
html[data-theme="light"] .theme-toggle .icon-moon{display:block}