:root {
    color-scheme: light;

    --bg: #f6f7f9;
    --panel: #ffffff;
    --text: #0f172a;
    --muted: #475569;
    --border: #e2e8f0;
    --brand: #2563eb;
    --brand-strong: #1d4ed8;
    --focus: #0ea5e9;

    --radius: 8px;
}

* { box-sizing: border-box; }

html, body {
    height: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
    line-height: 1.55;
}

a {
    color: var(--brand);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--focus) 55%, transparent);
    outline-offset: 2px;
    border-radius: 6px;
}

code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.95em;
    background: #f1f5f9;
    border: 1px solid var(--border);
    padding: 0.1rem 0.35rem;
    border-radius: 6px;
}

.container {
    width: min(1120px, calc(100% - 2rem));
    margin: 0 auto;
}

/* Top bar */
.topbar {
    background: var(--panel);
    border-bottom: 1px solid var(--border);
}

.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 0;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    color: var(--text);
    font-weight: 700;
    letter-spacing: 0.2px;
}

.brand:hover {
    text-decoration: none;
}

.nav {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.navlink {
    display: inline-flex;
    align-items: center;
    padding: 0.45rem 0.6rem;
    border-radius: 8px;
    color: var(--muted);
    border: 1px solid transparent;
}

.navlink:hover {
    text-decoration: none;
    background: #f8fafc;
    border-color: var(--border);
    color: var(--text);
}

.navlink.active {
    background: #eff6ff;
    border-color: color-mix(in srgb, var(--brand) 22%, var(--border));
    color: var(--brand-strong);
}

main.container {
    padding: 1.75rem 0 2.5rem;
}

h1 {
    font-size: clamp(1.6rem, 2.2vw, 2.1rem);
    margin: 0 0 1rem;
    letter-spacing: -0.02em;
}

p { margin: 0 0 1rem; }

.muted { color: var(--muted); }
.small { font-size: 0.95rem; }

/* Layout blocks */
.hero {
    padding: 1.4rem;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.25fr 0.9fr;
    gap: 1.25rem;
    align-items: start;
}

.lead {
    font-size: 1.05rem;
    color: var(--muted);
    margin-top: 0.35rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 1rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 900px) {
    .hero-grid { grid-template-columns: 1fr; }
    .grid-3 { grid-template-columns: 1fr; }
    .grid-2 { grid-template-columns: 1fr; }
}

/* Cards */
.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
}

.card-title {
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stack { display: grid; gap: 1rem; }

.row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
}

.right { text-align: right; }

/* Key/value */
.kv {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 0.5rem 1rem;
    margin-top: 0.25rem;
}

.k { color: var(--muted); font-size: 0.95rem; }

/* Buttons & badges */
.hero-actions {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.55rem 0.85rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
    font-weight: 600;
    text-decoration: none;
}

.btn:hover {
    text-decoration: none;
    background: #f8fafc;
}

.btn.primary {
    background: var(--brand);
    border-color: color-mix(in srgb, var(--brand) 40%, var(--border));
    color: #ffffff;
}

.btn.primary:hover {
    background: var(--brand-strong);
}

.pill {
    display: inline-flex;
    align-items: center;
    padding: 0.15rem 0.45rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: #f8fafc;
    color: var(--text);
    font-size: 0.9rem;
    margin-right: 0.35rem;
    margin-bottom: 0.25rem;
}

/* Lists / codeblocks */
.list {
    margin: 0;
    padding-left: 1.15rem;
}

.list li { margin: 0.35rem 0; }

.codeblock {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #f8fafc;
    overflow: hidden;
    margin-top: 1rem;
}

.codeblock-title {
    padding: 0.65rem 0.85rem;
    border-bottom: 1px solid var(--border);
    font-weight: 700;
    color: var(--muted);
    background: #ffffff;
}

pre {
    margin: 0;
    padding: 0.85rem;
    overflow-x: auto;
}

pre code {
    background: transparent;
    border: 0;
    padding: 0;
    border-radius: 0;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border);
    background: var(--panel);
}

.footer-inner {
    padding: 1.25rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-right .pill {
    background: #eff6ff;
    border-color: color-mix(in srgb, var(--brand) 22%, var(--border));
    color: var(--brand-strong);
}