@import url("https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,500;1,9..144,500&family=Outfit:wght@400;500;600&display=swap");

:root {
  --bg: #16141f;
  --panel: rgba(28, 24, 42, 0.78);
  --panel-solid: #1c182a;
  --line: rgba(155, 140, 210, 0.18);
  --text: #eceaf4;
  --muted: #9b96b0;
  --accent: #9d86ff;
  --accent-2: #d4b45a;
  --ok: #7dba8c;
  --warn: #e07a6a;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; color: var(--text); font: 16px/1.55 Outfit, system-ui, sans-serif; }
html { background: var(--bg); }
body {
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 90% 55% at 50% -8%, rgba(92, 62, 180, 0.22), transparent 58%),
    linear-gradient(rgba(155, 140, 210, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(155, 140, 210, 0.09) 1px, transparent 1px);
  background-size: auto, 52px 52px, 52px 52px;
  background-attachment: fixed;
}
body.sim { height: 100%; min-height: 100%; display: grid; grid-template-rows: auto auto 1fr; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.top {
  display: flex; justify-content: space-between; gap: 16px; align-items: baseline;
  padding: 16px 22px; border-bottom: 1px solid var(--line);
  background: rgba(22, 20, 31, 0.72);
  backdrop-filter: blur(10px);
}
.top nav { display: flex; gap: 14px; flex-wrap: wrap; font-size: 13px; color: var(--muted); }
.top nav a[aria-current="page"] { color: var(--accent); }
.wrap { max-width: 46rem; margin: 0 auto; padding: 40px 22px 80px; }
.wrap-wide { max-width: 72rem; margin: 0 auto; padding: 40px 22px 80px; }
h1 {
  font-family: Fraunces, Georgia, serif;
  font-size: 40px; letter-spacing: -0.03em; font-weight: 500; margin: 0 0 12px; line-height: 1.15;
}
h1 em { color: var(--accent); font-style: italic; font-weight: 500; }
h2 { font-size: 20px; margin: 36px 0 10px; font-weight: 560; }
h3 { font-size: 15px; margin: 22px 0 8px; color: var(--accent); font-weight: 560; }
p, li { color: var(--text); }
.lead, .muted { color: var(--muted); }
.kicker {
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--accent-2); margin: 0 0 12px;
}
code, pre { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 13px; }
code { color: var(--accent); }
pre {
  background: var(--panel); border: 1px solid var(--line); padding: 14px 16px;
  overflow-x: auto; color: #cbbdff; line-height: 1.45; border-radius: 14px;
}
.eq { display: block; margin: 12px 0; }
.cards { display: grid; gap: 12px; }
@media (min-width: 800px) { .cards.cols-2 { grid-template-columns: 1fr 1fr; } }
.card {
  border: 1px solid var(--line); background: var(--panel);
  padding: 16px 18px; border-radius: 16px;
}
.card h2, .card h3 { margin-top: 0; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
button, .btn {
  background: transparent; color: var(--text); border: 1px solid var(--line);
  padding: 7px 12px; font: inherit; cursor: pointer; border-radius: 999px;
}
button.on, button:hover, .btn:hover {
  border-color: var(--accent); color: var(--accent); background: rgba(157, 134, 255, 0.08);
}
label.sl { display: flex; justify-content: space-between; gap: 8px; font-size: 13px; color: var(--muted); }
input[type="range"] { width: 100%; accent-color: var(--accent); }
.sim-box {
  border: 1px solid var(--line); background: rgba(10, 9, 16, 0.7);
  border-radius: 16px; overflow: hidden;
}
.sim-box canvas { width: 100%; display: block; height: 360px; }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.stat { border: 1px solid var(--line); padding: 10px 12px; border-radius: 12px; background: rgba(12, 10, 20, 0.4); }
.stat b { display: block; font-size: 18px; font-variant-numeric: tabular-nums; }
.stat span { color: var(--muted); font-size: 12px; }
.quiz {
  border: 1px solid var(--line); padding: 18px; margin: 16px 0;
  background: var(--panel); border-radius: 16px;
}
.quiz fieldset { border: 0; padding: 0; margin: 0 0 16px; }
.quiz legend { font-weight: 560; margin-bottom: 8px; }
.quiz label { display: block; margin: 4px 0; color: var(--muted); cursor: pointer; }
.quiz .ok { color: var(--ok); }
.quiz .bad { color: var(--warn); }
.road { display: grid; gap: 10px; }
.road a, .road .soon {
  display: grid; grid-template-columns: 56px 1fr auto; gap: 14px; align-items: start;
  padding: 16px 18px; border: 1px solid var(--line); color: inherit; text-decoration: none;
  background: var(--panel); border-radius: 16px;
}
.road a:hover { text-decoration: none; border-color: rgba(157, 134, 255, 0.45); }
.road .n { color: var(--accent); font-variant-numeric: tabular-nums; font-size: 13px; }
.road .soon { opacity: 0.72; }
.road .soon .n { color: var(--muted); }
.road small { color: var(--muted); }
.pill {
  font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--muted); border: 1px solid var(--line); padding: 3px 8px; border-radius: 999px; height: fit-content;
}
.pill.go { color: var(--accent-2); border-color: rgba(212, 180, 90, 0.45); }
.pill.done { color: var(--ok); border-color: var(--ok); }
.callout {
  border: 1px solid var(--line); border-radius: 16px; padding: 14px 16px;
  color: var(--muted); margin: 20px 0; background: var(--panel);
}
ul.plain { padding-left: 1.15rem; }
header.sim-head {
  display: flex; justify-content: space-between; gap: 16px; align-items: baseline;
  padding: 16px 22px; border-bottom: 1px solid var(--line);
  background: rgba(22, 20, 31, 0.45);
}
header.sim-head h1 { font-size: 22px; margin: 0; }
header.sim-head p { margin: 0; color: var(--muted); font-size: 13px; max-width: 52rem; }
body.sim main.sim-main { display: grid; grid-template-columns: 1fr 340px; min-height: 0; }
body.sim canvas#view { width: 100%; height: 100%; display: block; background: rgba(10, 9, 16, 0.55); }
body.sim aside {
  border-left: 1px solid var(--line); background: rgba(28, 24, 42, 0.72);
  padding: 16px; overflow: auto; display: flex; flex-direction: column; gap: 16px;
}
body.sim aside h2 { margin: 0; font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
body.sim aside label { display: flex; justify-content: space-between; gap: 8px; font-size: 13px; color: var(--muted); align-items: center; }
.l1 { display: none; }
body.level1 .l1 { display: flex; flex-direction: column; gap: 10px; }
.bar { height: 6px; background: var(--line); border-radius: 99px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--accent); width: 0; }
.note { font-size: 12px; color: var(--muted); }
@media (max-width: 860px) {
  h1 { font-size: 30px; }
  body.sim main.sim-main { grid-template-columns: 1fr; }
  body.sim aside { border-left: 0; border-top: 1px solid var(--line); }
  body.sim canvas#view { height: 58vh; }
}