:root {
    --bg: #0d1117;
    --bg-elev: #161b22;
    --fg: #c9d1d9;
    --fg-strong: #e6edf3;
    --muted: #8b949e;
    --accent: #f47b30;
    --accent-soft: rgba(244, 123, 48, 0.10);
    --border: #30363d;
    --border-soft: #21262d;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg: #ffffff;
        --bg-elev: #f6f8fa;
        --fg: #1f2328;
        --fg-strong: #0f1419;
        --muted: #59636e;
        --accent: #cc5a16;
        --accent-soft: rgba(204, 90, 22, 0.08);
        --border: #d0d7de;
        --border-soft: #d8dee4;
    }
}

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

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--fg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.65;
    padding: 3rem 1.5rem 4rem;
    -webkit-font-smoothing: antialiased;
}

main {
    max-width: 720px;
    margin: 0 auto;
}

/* Header / brand */
header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.brand h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--fg-strong);
    letter-spacing: -0.025em;
    line-height: 1.1;
}

.brand .tagline {
    color: var(--muted);
    font-size: 1.05rem;
    margin-top: 0.4rem;
}

nav {
    display: flex;
    gap: 1.4rem;
    align-items: center;
    margin-top: 0.75rem;
    flex-wrap: wrap;
}

nav a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.92rem;
    transition: color 0.15s ease;
}

nav a:hover { color: var(--accent); }

/* Inline links inside prose */
.inline-link, p a:not(.inline-link) {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.15s ease;
}

.inline-link:hover, p a:not(.inline-link):hover {
    border-bottom-color: var(--accent);
}

/* Badges */
.badges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

.badges img { height: 20px; }

/* Sections */
.intro p { margin-bottom: 1rem; }

section {
    margin-bottom: 3.5rem;
}

h2 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--fg-strong);
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

h2::before {
    content: "→";
    color: var(--accent);
    font-weight: 400;
}

p {
    margin-bottom: 1rem;
}

.subtitle {
    color: var(--muted);
    font-size: 0.88rem;
    margin-top: -0.5rem;
    margin-bottom: 1rem;
}

/* Code */
code {
    background: var(--bg-elev);
    color: var(--accent);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-family: "JetBrains Mono", "SF Mono", "Cascadia Code", Menlo, Consolas, "Courier New", monospace;
    font-size: 0.88em;
    border: 1px solid var(--border-soft);
}

pre {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
    overflow-x: auto;
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

pre code {
    background: transparent;
    color: var(--fg);
    padding: 0;
    border: none;
    font-size: inherit;
}

pre.diagram {
    font-size: 0.72rem;
    color: var(--muted);
    line-height: 1.4;
    padding: 1rem 1.5rem;
}

/* Table */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

th, td {
    text-align: left;
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border-soft);
    font-variant-numeric: tabular-nums;
}

tr:last-child td { border-bottom: none; }

th {
    color: var(--muted);
    font-weight: 500;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    background: var(--bg);
}

td.num, th.num { text-align: right; font-feature-settings: "tnum"; }

tr.hero { background: var(--accent-soft); }
tr.hero td:first-child {
    color: var(--accent);
    font-weight: 600;
}
tr.hero td.num { color: var(--fg-strong); font-weight: 600; }

/* Notes */
.note {
    color: var(--muted);
    font-size: 0.88rem;
}

/* Games list */
ul.games {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    background: var(--bg-elev);
}

ul.games li {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border-soft);
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    flex-wrap: wrap;
}

ul.games li:last-child { border-bottom: none; }

ul.games li strong {
    color: var(--fg-strong);
    font-weight: 600;
}

.game-meta {
    color: var(--muted);
    font-size: 0.86rem;
    font-family: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
}

/* Bulleted lists in prose */
ul.bullets {
    list-style: none;
    margin-bottom: 1rem;
}

ul.bullets li {
    padding: 0.5rem 0 0.5rem 1.25rem;
    position: relative;
    margin-bottom: 0.25rem;
}

ul.bullets li::before {
    content: "·";
    color: var(--accent);
    position: absolute;
    left: 0;
    top: 0.5rem;
    font-weight: 700;
    font-size: 1.2em;
}

ul.bullets li strong {
    color: var(--fg-strong);
    font-weight: 600;
}

/* Footer */
footer {
    margin-top: 5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.88rem;
}

footer a {
    color: var(--muted);
    text-decoration: none;
    border-bottom: 1px solid var(--border);
    transition: border-color 0.15s, color 0.15s;
}

footer a:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* Mobile */
@media (max-width: 600px) {
    body { padding: 2rem 1rem 3rem; }
    .brand h1 { font-size: 2rem; }
    header { flex-direction: column; gap: 0.5rem; }
    nav { margin-top: 0; }
    pre { padding: 1rem; font-size: 0.8rem; }
    pre.diagram { font-size: 0.6rem; }
    th, td { padding: 0.7rem 0.6rem; font-size: 0.92rem; }
    ul.games li { flex-direction: column; gap: 0.25rem; align-items: flex-start; }
}