/* The ms271 website (docs/website.md). Light and dark follow the system. */
:root {
  --bg: #f6f4ef;
  --surface: #ffffff;
  --surface-2: #f0ece3;
  --text: #1f1b16;
  --muted: #6b6358;
  --line: #e2dccf;
  --accent: #e8730c;
  --accent-ink: #ffffff;
  --accent-soft: #fdebd8;
  --good: #1f8a4c;
  --good-soft: #ddf3e5;
  --bad: #c2362f;
  --bad-soft: #fbe3e1;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(31, 27, 22, .06), 0 4px 16px rgba(31, 27, 22, .05);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #15130f;
    --surface: #1f1c17;
    --surface-2: #29251f;
    --text: #f3eee6;
    --muted: #a59c8f;
    --line: #36312a;
    --accent: #ff8f2e;
    --accent-ink: #1a1208;
    --accent-soft: #3a2614;
    --good: #4cc47e;
    --good-soft: #17301f;
    --bad: #f0706a;
    --bad-soft: #3a1b19;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); text-underline-offset: 2px; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; }
h1 { font-size: 1.75rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.05rem; }
p { margin: 0 0 1em; }
code, .mono { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: .92em; }

/* header */
.top {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.top-in {
  max-width: 1040px; margin: 0 auto; padding: 10px 16px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.brand { display: inline-flex; align-items: center; gap: 7px; font-weight: 800; font-size: 1.15rem; color: var(--text); text-decoration: none; letter-spacing: -.01em; }
.brand span { color: var(--accent); }
.nav { display: flex; gap: 2px; flex-wrap: wrap; flex: 1; }
.nav a {
  color: var(--muted); text-decoration: none; padding: 6px 10px; border-radius: 8px; font-weight: 500;
}
.nav a:hover { color: var(--text); background: var(--surface-2); }
.nav a.on { color: var(--text); background: var(--surface-2); }
.who { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: .92rem; }

main { max-width: 1040px; margin: 0 auto; padding: 28px 16px 64px; }
.narrow { max-width: 560px; }
.foot { max-width: 1040px; margin: 0 auto; padding: 24px 16px 40px; color: var(--muted); font-size: .85rem; }

/* blocks */
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px;
}
.card + .card { margin-top: 16px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.stack > * + * { margin-top: 16px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spread { display: flex; gap: 10px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.muted { color: var(--muted); }
.small { font-size: .86rem; }
.hero { padding: 28px; background: linear-gradient(135deg, var(--accent-soft), var(--surface)); }
.hero h1 { font-size: 2rem; }
.stat { font-size: 1.6rem; font-weight: 750; font-variant-numeric: tabular-nums; }
.stat-label { color: var(--muted); font-size: .85rem; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; background: var(--muted); margin-right: 6px; }
.dot.up { background: var(--good); }
.pill {
  display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: .8rem; font-weight: 600;
  background: var(--surface-2); color: var(--muted);
}
.pill.good { background: var(--good-soft); color: var(--good); }
.pill.bad { background: var(--bad-soft); color: var(--bad); }
.pill.accent { background: var(--accent-soft); color: var(--accent); }

/* forms */
label { display: block; font-weight: 600; font-size: .9rem; margin: 0 0 4px; }
.field { margin-bottom: 14px; }
input, select, textarea {
  width: 100%; padding: 9px 11px; font: inherit; color: var(--text);
  background: var(--bg); border: 1px solid var(--line); border-radius: 8px;
}
textarea { min-height: 110px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 9px 16px; font: inherit; font-weight: 600; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--line); background: var(--surface); color: var(--text); text-decoration: none;
}
.btn:hover { background: var(--surface-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.06); }
.btn.danger { color: var(--bad); }
.btn.block { width: 100%; }
.btn.small { padding: 5px 10px; font-size: .85rem; }
.btn:disabled { opacity: .55; cursor: default; }
.google-g { width: 18px; height: 18px; }
.or { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: .85rem; margin: 14px 0; }
.or::before, .or::after { content: ""; flex: 1; height: 1px; background: var(--line); }

.msg { padding: 10px 12px; border-radius: 8px; margin: 12px 0 0; font-size: .92rem; }
.msg:empty { display: none; }
.msg.good { background: var(--good-soft); color: var(--good); }
.msg.bad { background: var(--bad-soft); color: var(--bad); }
.msg.info { background: var(--surface-2); color: var(--muted); }

/* tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: .82rem; text-transform: uppercase; letter-spacing: .03em; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr:last-child td { border-bottom: 0; }

/* news */
.post + .post { border-top: 1px solid var(--line); margin-top: 18px; padding-top: 18px; }
.post .date { color: var(--muted); font-size: .85rem; }
.post p { white-space: pre-line; }
.slides { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.slide { overflow: hidden; padding: 0; }
.slide img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; background: var(--surface-2); }
.slide .in { padding: 14px 16px; }

.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.tabs button {
  font: inherit; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--surface); color: var(--muted); cursor: pointer;
}
.tabs button.on { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

.codes { font-family: ui-monospace, Consolas, monospace; background: var(--bg); border: 1px solid var(--line);
  border-radius: 8px; padding: 10px 12px; white-space: pre; overflow-x: auto; max-height: 260px; }
.hidden { display: none !important; }

@media (max-width: 640px) {
  .hero { padding: 20px; }
  .hero h1 { font-size: 1.6rem; }
  .who { width: 100%; }
}
@media (min-width: 761px) {
  .wide { grid-column: span 2; }
}