:root {
  --bg: #f4f5f8; --card: #ffffff; --ink: #14161f; --soft: #5b6072;
  --line: #dcdfe8; --accent: #2f49d1; --accent-ink: #ffffff;
  --ok: #17794b; --ok-bg: #e4f5ec; --bad: #b3261e; --bad-bg: #fbe9e7;
  --warn: #8a5a00; --warn-bg: #fdf1d6; --muted-bg: #eceef4;
  --focus: #2f49d166;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1117; --card: #181b24; --ink: #eceef5; --soft: #9aa0b4;
    --line: #2b3040; --accent: #7c8ff5; --accent-ink: #0f1117;
    --ok: #63d49a; --ok-bg: #12301f; --bad: #ff8a80; --bad-bg: #3a1614;
    --warn: #f2c063; --warn-bg: #33270c; --muted-bg: #222634;
    --focus: #7c8ff566;
  }
}
* { box-sizing: border-box; }
/* Without this, any rule that sets `display` (.check, .card…) quietly
   un-hides an element carrying the hidden attribute. */
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
h1 { font-size: 1.5rem; line-height: 1.25; margin: 0 0 .35rem; text-wrap: balance; }
h2 { font-size: 1.05rem; margin: 2rem 0 .35rem; }
p { margin: .5rem 0; }
small { display: block; color: var(--soft); font-size: .85rem; font-weight: 400; margin-top: .25rem; }

header {
  display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap;
  padding: .7rem 1rem; background: var(--card);
  border-bottom: 1px solid var(--line);
}
.brand { font-size: 1.15rem; letter-spacing: -.01em; color: var(--ink); text-decoration: none; }
.brand b { color: var(--accent); }
nav { display: flex; gap: .25rem; flex: 1; }
nav a {
  padding: .4rem .75rem; border-radius: 8px; text-decoration: none;
  color: var(--soft); font-weight: 500;
}
nav a.on { background: var(--muted-bg); color: var(--ink); }
.who { display: flex; align-items: center; gap: .6rem; color: var(--soft); font-size: .9rem; margin: 0; }

main { padding: 1.25rem 1rem 3rem; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 1.5rem; max-width: 640px; margin: 0 auto 1rem;
}
.card.narrow { max-width: 400px; margin-top: 8vh; }
.card.wide { max-width: 1100px; }
.card.ok { border-color: var(--ok); }
.card.bad { border-color: var(--bad); }
.card.warn { border-color: var(--warn); }
.card.ok h1 { color: var(--ok); }
.card.bad h1 { color: var(--bad); }
.card.warn h1 { color: var(--warn); }
.card.busy h1::after {
  content: ""; display: inline-block; width: .8em; height: .8em;
  margin-left: .5em; vertical-align: -.05em; border-radius: 50%;
  border: 2px solid var(--line); border-top-color: var(--accent);
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .card.busy h1::after { animation: none; } }
.lede, .muted { color: var(--soft); }
.empty { color: var(--soft); padding: 2rem 0; text-align: center; }

label { display: block; font-weight: 600; font-size: .9rem; }
input:not([type=checkbox]):not([type=radio]), select {
  display: block; width: 100%; margin-top: .3rem; padding: .7rem .8rem;
  font: inherit; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px;
}
.fields input { font-size: 1.2rem; font-variant-numeric: tabular-nums; letter-spacing: .02em; }
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible,
.tile input:focus-visible + span {
  outline: 3px solid var(--focus); outline-offset: 2px;
}
.fields { display: grid; gap: 1rem; margin: 1.25rem 0; }
@media (min-width: 560px) { .fields { grid-template-columns: 2fr 3fr; } }
.stack { display: grid; gap: 1rem; margin-top: 1rem; }
.row { display: flex; gap: 1rem; align-items: end; flex-wrap: wrap; margin-top: .75rem; }
.row label { flex: 1; min-width: 220px; }
.search { display: flex; gap: .5rem; margin: 1rem 0; max-width: 460px; }
.search input { margin-top: 0; }

button {
  font: inherit; font-weight: 600; cursor: pointer; white-space: nowrap;
  padding: .65rem 1.1rem; border-radius: 10px; color: var(--ink);
  background: var(--card); border: 1px solid var(--line);
}
button:hover:not(:disabled) { border-color: var(--soft); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
button.primary:hover:not(:disabled) { filter: brightness(1.08); }
button:disabled { opacity: .45; cursor: not-allowed; }
button.small, .inline button, .who button { padding: .3rem .65rem; font-size: .85rem; font-weight: 500; }
.inline { display: inline-block; margin: .35rem .35rem 0 0; }
.actions { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; margin-top: 1.5rem; }
.actions .primary { min-width: 11rem; padding: .85rem 1.4rem; font-size: 1.05rem; }

fieldset { border: 0; padding: 0; margin: 1.5rem 0 0; min-width: 0; }
legend { font-weight: 600; font-size: .9rem; padding: 0; margin-bottom: .45rem; }
fieldset:disabled { opacity: .45; }
.tiles { display: grid; grid-template-columns: repeat(6, 1fr); gap: .5rem; }
@media (max-width: 480px) { .tiles { grid-template-columns: repeat(4, 1fr); } }
.tile { position: relative; }
.tile input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.tile span {
  display: grid; place-items: center; height: 3.25rem; border-radius: 10px;
  border: 1px solid var(--line); background: var(--bg);
  font-size: 1.2rem; font-weight: 600; font-variant-numeric: tabular-nums;
}
.tile input:hover:not(:disabled) + span { border-color: var(--soft); }
.tile input:checked + span { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
fieldset:disabled .tile input { cursor: not-allowed; }

.check { display: flex; gap: .65rem; align-items: flex-start; font-weight: 400; font-size: .95rem; margin-top: 1rem; }
.check input { width: 1.15rem; height: 1.15rem; margin: .2rem 0 0; flex: none; accent-color: var(--accent); }
.check.warn { background: var(--warn-bg); color: var(--warn); padding: .75rem .9rem; border-radius: 10px; }
.after { margin-top: 1rem; font-weight: 600; }

.sim { border: 1px solid var(--line); border-radius: 12px; padding: 1rem; background: var(--bg); }
.sim-head { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; margin-bottom: .5rem; }
.num { font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: .3rem 1.25rem; margin: .75rem 0 0; }
dt { color: var(--soft); }
dd { margin: 0; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; min-width: 0; }

.pill {
  display: inline-block; padding: .1rem .6rem; border-radius: 999px;
  font-size: .8rem; font-weight: 600; white-space: nowrap;
  background: var(--muted-bg); color: var(--soft);
}
.pill.ok { background: var(--ok-bg); color: var(--ok); }
.pill.bad { background: var(--bad-bg); color: var(--bad); }
.pill.warn, .pill.wait { background: var(--warn-bg); color: var(--warn); }
.alert { background: var(--muted-bg); border-radius: 10px; padding: .7rem .9rem; margin: .75rem 0 0; }
.alert.ok { background: var(--ok-bg); color: var(--ok); }
.alert.bad { background: var(--bad-bg); color: var(--bad); }
.alert.warn { background: var(--warn-bg); color: var(--warn); }
.alert .link { font-size: .85rem; margin: .5rem 0; }

.scroll { overflow-x: auto; margin-top: .5rem; }
table { border-collapse: collapse; width: 100%; font-size: .92rem; }
th, td { text-align: left; padding: .6rem .75rem .6rem 0; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--soft); font-weight: 600; font-size: .8rem; white-space: nowrap; }
td.num { white-space: nowrap; }
.detail { color: var(--soft); font-size: .85rem; max-width: 34ch; margin-top: .3rem; }