/*
 * Croom design system.
 *
 * Brutalist spine — exposed structure, hard rules, zero radius, monospace labels, oversized
 * display type — carrying the Metropolis vocabulary: near-black ground, faint grid, wide-tracked
 * uppercase tags, film grain, a sticky action bar.
 *
 * Restraint is deliberate. This is market infrastructure whose whole claim is that it can be
 * checked, and a page that shouts undermines the claim it is making. One accent colour; the
 * gradient appears once, in the hero, and nowhere else.
 */

@import url("https://fonts.googleapis.com/css2?family=Chakra+Petch:wght@600;700&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500;700&display=swap");

:root {
  --ink: #09090b;
  --ink-2: #0e0e12;
  --panel: #111116;
  --rule: #26262e;
  --rule-bright: #3a3a46;
  --text: #ededf0;
  --dim: #8b8b96;
  --dimmer: #5c5c66;

  --accent: #8b7cff;
  --accent-ink: #09090b;
  --good: #5ddc8a;
  --bad: #ff5c5c;
  --warn: #e8c15a;

  --display: "Chakra Petch", ui-sans-serif, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;

  --gutter: clamp(16px, 4vw, 48px);
  --max: 1200px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font: 400 16px/1.6 var(--body);
  overflow-x: hidden;
}

/* The grid is visible on purpose: the structure is the ornament. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    linear-gradient(to right, rgba(255,255,255,.028) 1px, transparent 1px) 0 0 / 80px 100%,
    linear-gradient(to bottom, rgba(255,255,255,.028) 1px, transparent 1px) 0 0 / 100% 80px;
}

/* Film grain, lifted from the Metropolis artwork. Low enough to feel like print, not noise. */
body::after {
  content: "";
  position: fixed;
  inset: -50%;
  pointer-events: none;
  z-index: 1;
  opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
}

.shell { position: relative; z-index: 2; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }

/* ── type ────────────────────────────────────────────────────────────────────────────────── */

h1, h2, h3 { font-family: var(--display); font-weight: 700; margin: 0; letter-spacing: -0.01em; }

.display {
  font-family: var(--display);
  font-weight: 700;
  text-transform: uppercase;
  line-height: .92;
  letter-spacing: -0.02em;
  font-size: clamp(42px, 9vw, 116px);
}

.display-sm {
  font-family: var(--display);
  font-weight: 700;
  text-transform: uppercase;
  line-height: 1;
  letter-spacing: -0.01em;
  font-size: clamp(26px, 4.4vw, 52px);
}

.tag {
  display: inline-block;
  font: 500 11px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: .18em;
  color: var(--dim);
  border: 1px solid var(--rule);
  padding: 7px 11px;
}

.eyebrow {
  font: 500 11px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: .2em;
  color: var(--dimmer);
}

.lede { font-size: clamp(17px, 2vw, 21px); color: var(--dim); max-width: 62ch; }

.mono { font-family: var(--mono); font-size: 13px; word-break: break-all; }

a { color: var(--accent); text-decoration: none; border-bottom: 1px solid rgba(139,124,255,.35); }
a:hover { border-bottom-color: var(--accent); }

/* ── structure ───────────────────────────────────────────────────────────────────────────── */

.rule { border: 0; border-top: 1px solid var(--rule); margin: 0; }
.rule-heavy { border: 0; border-top: 2px solid var(--rule-bright); margin: 0; }

section { padding: clamp(56px, 9vw, 112px) 0; }

.cols { display: grid; gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.cols > * { background: var(--ink); padding: clamp(20px, 3vw, 32px); }
@media (min-width: 760px) { .cols-3 { grid-template-columns: repeat(3, 1fr); } .cols-2 { grid-template-columns: repeat(2, 1fr); } }

.card { border: 1px solid var(--rule); background: var(--ink-2); padding: clamp(20px, 3vw, 30px); }

.stat { font-family: var(--mono); font-weight: 700; font-size: clamp(28px, 4vw, 44px); line-height: 1; }
.stat-label { font: 500 11px/1.4 var(--mono); text-transform: uppercase; letter-spacing: .16em; color: var(--dimmer); margin-top: 10px; }

/* ── controls ────────────────────────────────────────────────────────────────────────────── */

.btn {
  display: inline-block;
  font: 500 13px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: .14em;
  padding: 16px 24px;
  border: 1px solid var(--rule-bright);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  border-radius: 0;
}
.btn:hover { border-color: var(--text); background: rgba(255,255,255,.04); }
.btn-primary { background: var(--text); color: var(--accent-ink); border-color: var(--text); font-weight: 700; }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

.badge {
  display: inline-block;
  font: 700 10px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: .14em;
  padding: 6px 9px;
  border: 1px solid currentColor;
}
.badge.good { color: var(--good); }
.badge.bad { color: var(--bad); }
.badge.warn { color: var(--warn); }
.badge.dim { color: var(--dimmer); }

/* ── nav and sticky bar ──────────────────────────────────────────────────────────────────── */

.nav {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px var(--gutter);
  border-bottom: 1px solid var(--rule);
  background: rgba(9,9,11,.82);
  backdrop-filter: blur(8px);
}
.nav-mark { font-family: var(--display); font-weight: 700; text-transform: uppercase; letter-spacing: .04em; font-size: 17px; border: 0; color: var(--text); }
.nav-links { display: flex; gap: 22px; align-items: center; }
.nav-links a { font: 500 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .16em; color: var(--dim); border: 0; }
.nav-links a:hover { color: var(--text); }

/* Anchored right rather than centred: the Metropolis dock sits mid-screen over sparse artwork,
   and over a dense column of prose it simply covers the words. */
.dock {
  position: fixed; right: var(--gutter); bottom: 20px;
  z-index: 30; display: flex; align-items: stretch;
  border: 1px solid var(--rule-bright); background: rgba(14,14,18,.94);
  backdrop-filter: blur(10px);
}
.dock span { font: 500 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .16em; color: var(--dim); padding: 0 18px; display: flex; align-items: center; }
.dock .btn { border: 0; border-left: 1px solid var(--rule-bright); padding: 14px 20px; }

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

table { width: 100%; border-collapse: collapse; font-size: 13px; }
td, th { padding: 11px 0; border-bottom: 1px solid var(--rule); text-align: left; }
th { font: 500 10px/1 var(--mono); text-transform: uppercase; letter-spacing: .16em; color: var(--dimmer); }
td:last-child, th:last-child { text-align: right; font-family: var(--mono); }
tr:last-child td { border-bottom: 0; }

/* ── prose, for articles ─────────────────────────────────────────────────────────────────── */

.prose { max-width: 68ch; }
.prose h2 { font-size: clamp(22px, 3vw, 30px); margin: 52px 0 14px; text-transform: uppercase; letter-spacing: 0; }
.prose h3 { font-size: 18px; margin: 34px 0 10px; font-family: var(--body); font-weight: 600; }
.prose p { margin: 0 0 18px; }
.prose ul, .prose ol { margin: 0 0 18px; padding-left: 20px; }
.prose li { margin-bottom: 8px; }
.prose code { font-family: var(--mono); font-size: .88em; background: var(--panel); border: 1px solid var(--rule); padding: 2px 5px; }
.prose pre {
  font-family: var(--mono); font-size: 12.5px; line-height: 1.6;
  background: var(--ink-2); border: 1px solid var(--rule);
  padding: 18px; overflow-x: auto; margin: 0 0 22px;
}
.prose pre code { background: none; border: 0; padding: 0; }
.prose blockquote {
  margin: 0 0 22px; padding: 2px 0 2px 20px;
  border-left: 2px solid var(--accent); color: var(--dim);
}
.prose table { margin-bottom: 22px; }
.prose strong { color: #fff; font-weight: 600; }

.footer { border-top: 1px solid var(--rule); padding: 40px 0 120px; color: var(--dimmer); font-size: 13px; }

@media (max-width: 759px) {
  .nav-links { gap: 14px; }
  .nav-links .hide-sm { display: none; }
  .dock { left: var(--gutter); right: var(--gutter); }
  .dock span { display: none; }
  .dock .btn { flex: 1; text-align: center; border-left: 0; }
}

/* ── app vocabulary ──────────────────────────────────────────────────────────────────────── */
/*
 * The application renders its own markup from TypeScript, using class names that predate this
 * system. Mapping them here keeps one stylesheet and one visual language rather than two, and
 * avoids a rename that would touch rendering code the day before a freeze.
 */

.panel {
  background: var(--ink-2);
  border: 1px solid var(--rule);
  padding: clamp(18px, 2.4vw, 26px);
  margin-bottom: 18px;
}

.row { display: flex; flex-wrap: wrap; gap: 18px; }
.row > .panel { flex: 1 1 260px; margin-bottom: 0; }

.label {
  font: 500 10px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: .18em;
  color: var(--dimmer);
  margin-bottom: 10px;
}

.big { font-family: var(--mono); font-weight: 700; font-size: clamp(22px, 3vw, 30px); line-height: 1; }

.note { color: var(--dim); font-size: 13.5px; margin-top: 10px; line-height: 1.55; }

.controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 18px; }

select {
  background: var(--ink);
  color: var(--text);
  border: 1px solid var(--rule-bright);
  border-radius: 0;
  padding: 13px 14px;
  font: 500 12px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: .08em;
}

button.primary { background: var(--text); color: var(--accent-ink); border: 1px solid var(--text); font-weight: 700; }
button.primary:hover { background: var(--accent); border-color: var(--accent); }

#app button {
  font: 500 12px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: .12em;
  padding: 13px 18px;
  border: 1px solid var(--rule-bright);
  background: transparent;
  color: var(--text);
  border-radius: 0;
  cursor: pointer;
}
#app button:hover { border-color: var(--text); }

/* `#app button` is an id selector and out-specifies `button.primary`, so the emphasised button in
   the app was quietly rendering as an ordinary one. Restated at matching weight. */
#app button.primary { background: var(--text); color: var(--accent-ink); border-color: var(--text); font-weight: 700; }
#app button.primary:hover { background: var(--accent); border-color: var(--accent); }

#app button:disabled { color: var(--dimmer); border-color: var(--rule); cursor: not-allowed; }
#app button:disabled:hover { border-color: var(--rule); }

/* Text entry, for the price a visitor invents in the rig panel. */
#app input[type="text"] {
  background: var(--ink);
  color: var(--text);
  border: 1px solid var(--rule-bright);
  border-radius: 0;
  padding: 13px 14px;
  font: 500 13px/1 var(--mono);
  letter-spacing: .04em;
}
#app input[type="text"]:focus { outline: none; border-color: var(--accent); }

/* Sliders. The platform default is a blue pill with rounded corners, which is the one shape this
   design system does not contain, so both tracks and both thumbs are restated by hand. */
#app input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  height: 28px;
  background: transparent;
  cursor: pointer;
}
#app input[type="range"]::-webkit-slider-runnable-track {
  height: 2px;
  background: var(--rule-bright);
}
#app input[type="range"]::-moz-range-track {
  height: 2px;
  background: var(--rule-bright);
}
#app input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  margin-top: -6px;
  background: var(--accent);
  border: 0;
  border-radius: 0;
}
#app input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  background: var(--accent);
  border: 0;
  border-radius: 0;
}
#app input[type="range"]:focus { outline: none; }
#app input[type="range"]:focus::-webkit-slider-thumb { background: var(--text); }
#app input[type="range"]:focus::-moz-range-thumb { background: var(--text); }

/* The chart carries the one gradient the system allows outside the hero. */
#app svg { border: 1px solid var(--rule); background: var(--ink); }


/* ── explainers ──────────────────────────────────────────────────────────────────────────────
   A marker beside anything that carries weight, and a modal behind each one. The page is dense
   with terms that are obvious only once somebody tells you, and a visitor who does not know what
   a proven floor is will read the panels as decoration. */

.qmark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 17px; height: 17px;
  margin-left: 7px;
  padding: 0;
  vertical-align: middle;
  font: 700 10px/1 var(--mono);
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent);
  border-radius: 0;
  cursor: pointer;
  transition: background .12s, color .12s;
}
.qmark:hover, .qmark:focus-visible { background: var(--accent); color: var(--accent-ink); outline: none; }
/* `#app button` sets padding and type for buttons in the app; a marker is not one of those. */
#app button.qmark { padding: 0; width: 17px; height: 17px; font: 700 10px/1 var(--mono); letter-spacing: 0; border-color: var(--accent); color: var(--accent); }
#app button.qmark:hover { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }

dialog.explain {
  width: min(620px, calc(100vw - 32px));
  padding: 0;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--rule-bright);
  border-radius: 0;
  box-shadow: 0 30px 80px rgba(0, 0, 0, .7);
}
dialog.explain::backdrop { background: rgba(5, 5, 8, .82); }

.explain-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 16px;
  padding: 22px 24px 14px;
  border-bottom: 1px solid var(--rule);
}
.explain-head h3 {
  margin: 0;
  font: 700 19px/1.25 var(--display);
  text-transform: uppercase;
  letter-spacing: .02em;
}
.explain-close {
  flex: none;
  padding: 4px 8px;
  font: 500 13px/1 var(--mono);
  color: var(--dim);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 0;
  cursor: pointer;
}
.explain-close:hover { color: var(--text); border-color: var(--text); }

.explain-body { padding: 18px 24px 4px; max-height: min(60vh, 520px); overflow-y: auto; }
.explain-body p { margin: 0 0 14px; font-size: 15px; line-height: 1.62; color: var(--dim); }
.explain-body p strong { color: var(--text); }
.explain-body p.note { font-size: 13px; color: var(--dimmer); border-left: 2px solid var(--rule-bright); padding-left: 12px; }
.explain-body code { font: 500 12px/1 var(--mono); color: var(--accent); }
.explain-body table { width: 100%; border-collapse: collapse; margin: 0 0 14px; }
.explain-body td { padding: 9px 0; border-bottom: 1px solid var(--rule); font-size: 14px; color: var(--dim); vertical-align: top; }
.explain-body td:first-child { width: 34%; padding-right: 16px; font: 500 12px/1.4 var(--mono); color: var(--text); text-transform: uppercase; letter-spacing: .06em; }

.explain-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 16px 24px 20px;
  border-top: 1px solid var(--rule);
}
.explain-next {
  padding: 12px 20px;
  font: 700 12px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--accent-ink);
  background: var(--text);
  border: 1px solid var(--text);
  border-radius: 0;
  cursor: pointer;
}
.explain-next:hover { background: var(--accent); border-color: var(--accent); }

/* The spotlight: a ring plus a dimmed everything-else, done with one enormous shadow so that no
   overlay element has to be positioned against a moving layout. */
/* Docked to the foot of the viewport while a panel is spotlit at the head of it. Opened
   non-modally so the page can still scroll, which means position comes from here rather than from
   the browser's centring of a modal dialog. */
dialog.explain.docked {
  position: fixed;
  inset: auto auto 3vh 50%;
  transform: translateX(-50%);
  margin: 0;
  z-index: 60;
}
dialog.explain.docked .explain-body { max-height: min(40vh, 360px); }

.spotlight {
  position: relative;
  z-index: 10;
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 1px var(--accent), 0 0 0 9999px rgba(5, 5, 8, .72);
}
@media (prefers-reduced-motion: reduce) {
  .qmark { transition: none; }
}

/* A standing invitation to re-open the tour, for anyone who dismissed it. */
.tour-cta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
  margin: 0 0 22px;
  padding: 14px 16px;
  border: 1px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 7%, transparent);
}