:root {
    --bg: #000;
    --card: #232323;
    --meta-bg: #13261f;
    --text: #ececec;
    --muted: #8c8c8c;
    --accent: #5ec4a1;
    --accent-dim: #2f7a62;
    --radius: 12px;
    --gutter: 24px;
    --sidebar: 224px;
    --font-body: 'Lexend', system-ui, sans-serif;
    --font-head: 'Fraunces', Georgia, serif;
    --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html { background: var(--bg); }

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg);
    color: var(--text);
    font: 300 1rem/1.65 var(--font-body);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 700; line-height: 1.2; }

/* ---------- header ---------- */
.site-header {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: var(--gutter);
    padding: 16px var(--gutter);
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
}
.brand:hover { text-decoration: none; }

.avatar {
    width: 75px;
    height: 75px;
    border-radius: 6px;
    object-fit: cover;
}

.site-name {
    white-space: nowrap;
    font-family: var(--font-head);
    font-size: 1.4rem;
    font-weight: 700;
}

.search { width: min(380px, 100%); justify-self: center; }
/* Google's search box: drop its white panel so it sits on the dark header */
.search .gsc-control-cse { padding: 0; border: 0; background: transparent; }
.search form.gsc-search-box { margin: 0; }

.site-nav {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 20px;
    white-space: nowrap;
    font-weight: 500;
    font-size: 1.05rem;
}

/* ---------- body: sidebar + main ---------- */
.site-body {
    flex: 1;
    display: grid;
    grid-template-columns: var(--sidebar) minmax(0, 1fr);
    gap: var(--gutter);
    padding: 8px var(--gutter) 0 var(--gutter);
    padding-right: 16px;
}

.sidebar { padding-top: 16px; font-weight: 400; }

.bio { margin: 0 0 40px; }

.follow summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.15rem;
}
.follow summary::-webkit-details-marker { display: none; }
.follow summary i { color: var(--accent); font-size: 0.9rem; transition: transform 0.2s; }
.follow:not([open]) summary i { transform: rotate(-90deg); }

.follow ul { list-style: none; margin: 12px 0 0; padding: 0; }
.follow li { margin: 4px 0; }
.follow li a { font-weight: 500; }
.follow li i { width: 1.4em; }

/* ---------- cards (pages, articles, list items) ---------- */
.main { min-width: 0; }

.card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 20px 24px 24px;
    margin-bottom: var(--gutter);
}

.card h1 { font-size: 2.4rem; margin: 0 0 16px; }
.card h2 { font-size: 1.6rem; margin: 0 0 12px; }
.card h2 a { color: var(--text); }

.prose { margin-bottom: 64px; }
.prose p { margin: 0 0 14px; }
.prose img { max-width: 100%; height: auto; }
.prose pre, .prose code { font-family: var(--font-mono); }
.prose pre {
    overflow-x: auto;
    padding: 12px 16px;
    background: #161616;
    border-radius: 8px;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    padding: 16px 20px;
    background: var(--meta-bg);
    border-radius: 8px;
    color: var(--muted);
    font-size: 0.9rem;
}
.card-meta-lines { display: flex; flex-direction: column; gap: 4px; }
.card-meta-lines i { width: 1.25em; margin-right: 6px; text-align: center; }
.card-meta a { color: inherit; }
.card-meta-icon { font-size: 2.4rem; color: var(--accent-dim); opacity: 0.6; }

.list-heading { margin: 0 0 16px; }

.term-list { list-style: none; padding: 0; }
.term-list span { color: var(--muted); }

/* ---------- footer ---------- */
.site-footer { padding: 48px var(--gutter) 24px; }
.site-footer a { text-decoration: underline dotted; text-underline-offset: 4px; }

/* ---------- small screens ---------- */
@media (max-width: 760px) {
    :root { --gutter: 16px; }

    .site-header {
        grid-template-columns: 1fr auto;
        grid-template-areas: "brand nav" "search search";
    }
    .brand { grid-area: brand; }
    .site-nav { grid-area: nav; }
    .search { grid-area: search; width: 100%; }
    .avatar { width: 52px; height: 52px; }
    .site-name { font-size: 1.15rem; }

    .site-body { grid-template-columns: 1fr; padding-right: var(--gutter); }
    .sidebar { order: 2; }
    .card h1 { font-size: 1.9rem; }
}