/*
 * Shared by index.html and docs.html. Deliberately plain CSS with no build
 * step: these pages are served straight out of public/ by `vite`, `yarn
 * preview` and `yarn serve` alike, and must not depend on the planner's own
 * bundle.
 */

:root {
    --ink: #1f2933;
    --ink-soft: #52606d;
    --ink-faint: #7b8794;
    --rule: #e4e7eb;
    --ground: #f5f7fa;
    --card: #fff;
    --accent: #41826d;
    --accent-soft: #eef4f1;
    --code-bg: var(--ink);
    --code-ink: #e8eef2;
    --radius: 12px;

    --font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    padding: 0 1.25rem 5rem;
    background: var(--ground);
    color: var(--ink);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 56rem; margin: 0 auto; }

/* ─── header ─────────────────────────────────────────────────────────── */

.site-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    padding: 2.5rem 0 1.5rem;
}

.site-header__logo { display: block; width: auto; height: 3.25rem; }

.site-header__nav {
    margin-left: auto;
    display: flex;
    gap: 1.25rem;
    font-size: .9375rem;
}

.site-header__nav a { color: var(--ink-soft); text-decoration: none; }
.site-header__nav a:hover,
.site-header__nav a[aria-current] { color: var(--accent); }

/* ─── hero ───────────────────────────────────────────────────────────── */

.hero { padding: 1rem 0 2.5rem; border-top: 1px solid var(--rule); }

.hero h1 {
    margin: 1.75rem 0 .5rem;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    line-height: 1.15;
    letter-spacing: -.02em;
}

.hero p {
    margin: 0;
    max-width: 38rem;
    color: var(--ink-soft);
    font-size: 1.0625rem;
}

/* ─── cards ──────────────────────────────────────────────────────────── */

.cards {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
    margin: 0 0 3rem;
    padding: 0;
    list-style: none;
}

.card {
    display: block;
    padding: 1.5rem;
    background: var(--card);
    border: 1px solid var(--rule);
    border-radius: var(--radius);
    text-decoration: none;
    color: inherit;
    transition: border-color .15s, transform .15s;
}

.card:hover { border-color: var(--accent); transform: translateY(-2px); }

.card__kicker {
    display: block;
    font-size: .75rem;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--accent);
}

.card__title { margin: .4rem 0 .35rem; font-size: 1.25rem; }
.card__text { margin: 0; color: var(--ink-soft); font-size: .9375rem; }

/* ─── prose ──────────────────────────────────────────────────────────── */

h2 {
    margin: 3rem 0 .75rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--rule);
    font-size: 1.375rem;
    letter-spacing: -.01em;
}

h3 { margin: 2rem 0 .5rem; font-size: 1.0625rem; }

p, ul, ol { margin: 0 0 1rem; }
ul, ol { padding-left: 1.25rem; }
li { margin-bottom: .35rem; }

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

code {
    padding: .1em .4em;
    background: var(--code-bg);
    border-radius: 4px;
    color: var(--code-ink);
    font-family: var(--font-mono);
    font-size: .875em;
    line-height: 1.4;
    word-break: break-word;
}

pre {
    margin: 0 0 1.25rem;
    padding: 1rem 1.125rem;
    overflow-x: auto;
    background: var(--code-bg);
    border-radius: var(--radius);
    color: var(--code-ink);
}

pre code { padding: 0; background: none; color: inherit; font-size: .8125rem; }

.note {
    margin: 0 0 1.25rem;
    padding: .875rem 1.125rem;
    background: var(--accent-soft);
    border-left: 3px solid var(--accent);
    border-radius: 0 6px 6px 0;
    font-size: .9375rem;
}

/* ─── tables ─────────────────────────────────────────────────────────── */

.table-scroll { overflow-x: auto; margin: 0 0 1.5rem; }

table {
    width: 100%;
    border-collapse: collapse;
    font-size: .9375rem;
}

th, td {
    padding: .625rem .75rem;
    text-align: left;
    vertical-align: top;
    border-bottom: 1px solid var(--rule);
}

th {
    font-size: .75rem;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--ink-faint);
}

td:first-child { white-space: nowrap; }

.req { color: var(--accent); font-weight: 600; }

footer {
    margin-top: 3.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--rule);
    color: var(--ink-faint);
    font-size: .875rem;
}