:root {
    color-scheme: light;
    --bg: #f5f7fb;
    --panel: #ffffff;
    --ink: #182033;
    --muted: #5f6b81;
    --line: #d9e0ea;
    --accent: #237a57;
    --accent-strong: #15543b;
    --code-bg: #101828;
    --code-ink: #e6edf7;
    --shadow: 0 18px 50px rgba(24, 32, 51, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--ink);
    background: var(--bg);
    font-family:
        Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.6;
}

a {
    color: var(--accent-strong);
}

.sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: 300px;
    padding: 28px 20px;
    background: #111827;
    color: #f8fafc;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.brand {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 14px;
    color: inherit;
    text-decoration: none;
    align-items: center;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: #1f2937;
    border-radius: 8px;
    font-weight: 800;
    letter-spacing: 0;
}

.brand strong {
    display: block;
    font-size: 15px;
}

.brand small {
    color: #a9b4c7;
}

.nav {
    display: grid;
    gap: 8px;
}

.nav button {
    width: 100%;
    border: 1px solid transparent;
    background: transparent;
    color: #cbd5e1;
    text-align: left;
    padding: 11px 12px;
    border-radius: 8px;
    cursor: pointer;
    font: inherit;
}

.nav button:hover,
.nav button.active {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.12);
}

.status {
    margin-top: auto;
    padding: 14px;
    background: rgba(35, 122, 87, 0.18);
    border: 1px solid rgba(134, 239, 172, 0.22);
    border-radius: 8px;
}

.status span,
.status strong {
    display: block;
}

.status span {
    color: #a9b4c7;
    font-size: 13px;
}

.status strong {
    margin-top: 4px;
    font-size: 14px;
}

.shell {
    width: min(1040px, calc(100% - 340px));
    margin-left: 300px;
    padding: 36px 40px 64px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    align-items: flex-start;
    margin-bottom: 24px;
}

.eyebrow {
    margin: 0 0 6px;
    color: var(--accent);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

.topbar h1 {
    margin: 0;
    font-size: clamp(30px, 4vw, 52px);
    line-height: 1.05;
    letter-spacing: 0;
}

.open-game {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0 14px;
    background: var(--accent);
    color: #ffffff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 700;
}

.markdown {
    min-width: 0;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: clamp(24px, 4vw, 48px);
}

.markdown h1,
.markdown h2,
.markdown h3,
.markdown h4 {
    line-height: 1.2;
    letter-spacing: 0;
}

.markdown h1 {
    margin: 0 0 24px;
    font-size: 40px;
}

.markdown h2 {
    margin: 36px 0 12px;
    padding-top: 8px;
    border-top: 1px solid var(--line);
    font-size: 25px;
}

.markdown h3 {
    margin: 26px 0 8px;
    font-size: 19px;
}

.markdown p {
    margin: 0 0 16px;
}

.markdown ul,
.markdown ol {
    padding-left: 24px;
    margin: 0 0 18px;
}

.markdown li + li {
    margin-top: 4px;
}

.markdown table {
    width: 100%;
    border-collapse: collapse;
    border: 1px solid var(--line);
    border-radius: 8px;
}

.table-scroll {
    width: 100%;
    max-width: 100%;
    margin: 18px 0 24px;
    overflow-x: auto;
    border-radius: 8px;
}

.table-scroll:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 3px;
}

.markdown th,
.markdown td {
    border-bottom: 1px solid var(--line);
    padding: 10px 12px;
    text-align: left;
    vertical-align: top;
}

.markdown th {
    background: #eef3f8;
    font-weight: 800;
}

.markdown tr:last-child td {
    border-bottom: 0;
}

.markdown code {
    padding: 2px 6px;
    border-radius: 6px;
    background: #e9eef5;
    color: #0f172a;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    font-size: 0.92em;
}

.markdown :not(pre) > code {
    overflow-wrap: anywhere;
}

.markdown pre {
    overflow-x: auto;
    margin: 18px 0 24px;
    padding: 18px;
    border-radius: 8px;
    background: var(--code-bg);
    color: var(--code-ink);
}

.markdown pre code {
    padding: 0;
    background: transparent;
    color: inherit;
}

.markdown blockquote {
    margin: 20px 0;
    padding: 12px 16px;
    border-left: 4px solid var(--accent);
    background: #edf7f2;
    color: #294939;
}

.markdown hr {
    border: 0;
    border-top: 1px solid var(--line);
    margin: 32px 0;
}

.error {
    color: #b42318;
}

@media (max-width: 860px) {
    .sidebar {
        position: static;
        width: auto;
        padding: 20px;
    }

    .shell {
        width: 100%;
        margin-left: 0;
        padding: 22px 16px 44px;
    }

    .topbar {
        flex-direction: column;
    }

    .open-game {
        width: 100%;
        justify-content: center;
    }
}