/* chainrom — a phosphor terminal, because the subject is a 1990s program
   living inside a machine that was not built to hold it.

   Everything here is drawn from primitives: the logo is three rectangles, the
   scanlines are a repeating gradient. No borrowed artwork. */

:root {
  --bg:        #080b09;
  --panel:     #0d120f;
  --panel-2:   #111815;
  --line:      #1c2a22;
  --line-hot:  #2b4a38;

  --ink:       #d6f0e0;
  --ink-dim:   #8fae9c;
  --ink-mute:  #5c7668;

  --green:     #43d675;
  --green-dim: #227a43;
  --amber:     #f0b23c;
  --red:       #ff5f56;

  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "DejaVu Sans Mono", Menlo, Consolas, monospace;

  --radius: 4px;
  --max: 1000px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.65 var(--mono);
  -webkit-font-smoothing: antialiased;
}

/* Scanlines and a soft bloom. Kept faint — a CRT that fights the text is a
   costume, not a design. */
.scan {
  position: fixed; inset: 0; pointer-events: none; z-index: 50;
  background:
    repeating-linear-gradient(0deg, #00000038 0 1px, transparent 1px 3px),
    radial-gradient(ellipse 80% 55% at 50% 0%, #43d6751f, transparent 70%);
  mix-blend-mode: normal;
}
@media (prefers-reduced-motion: no-preference) {
  .scan::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(transparent, #43d6750f 45%, transparent);
    animation: sweep 7s linear infinite;
  }
}
@keyframes sweep { from { transform: translateY(-100%); } to { transform: translateY(100%); } }

a { color: inherit; }

/* ── logo: three bars, drawn not borrowed ─────────────────────────────── */

.logo { display: inline-flex; flex-direction: column; gap: 2px; width: 18px; }
.logo i { height: 3px; background: var(--green); display: block; }
.logo i:nth-child(2) { width: 100%; }
.logo i:nth-child(1) { width: 80%; }
.logo i:nth-child(3) { width: 55%; background: var(--green-dim); }
.logo.small { width: 14px; }

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

.top {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  max-width: var(--max); margin: 0 auto; padding: 16px 20px;
  background: #080b09e6; backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  text-decoration: none; font-weight: 700; letter-spacing: .04em;
  margin-right: auto; text-transform: lowercase;
}
.top nav { display: flex; gap: 18px; flex-wrap: wrap; }
.top nav a {
  color: var(--ink-mute); text-decoration: none; font-size: 13px;
  text-transform: lowercase; letter-spacing: .04em;
}
.top nav a:hover { color: var(--green); }

/* ── X / social ───────────────────────────────────────────────────────── */
.x { display: inline-flex; align-items: center; gap: 6px; text-decoration: none; text-transform: none; }
.x svg { width: 11px; height: 11px; flex: none; opacity: .85; }
.top nav a.x { margin-left: 2px; text-transform: none; }
footer .x { color: var(--ink-mute); margin-left: auto; }
footer .x:hover { color: var(--green); }

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

.hero { max-width: var(--max); margin: 0 auto; padding: 72px 20px 44px; }
.kicker {
  margin: 0 0 20px; color: var(--green); font-size: 12px;
  letter-spacing: .18em; text-transform: uppercase;
}
h1 {
  margin: 0 0 22px;
  font-size: clamp(32px, 5.6vw, 58px); line-height: 1.08;
  letter-spacing: -.02em; font-weight: 700;
}
h1 em { font-style: normal; color: var(--green); }
.lede { margin: 0; max-width: 64ch; color: var(--ink-dim); font-size: clamp(14px, 1.7vw, 16px); }
.cta { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 30px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px; border-radius: var(--radius);
  border: 1px solid var(--line-hot); background: var(--panel-2);
  color: var(--ink); font: 700 13px var(--mono);
  letter-spacing: .04em; text-decoration: none; cursor: pointer;
  transition: border-color .15s, color .15s, background .15s;
}
.btn:hover { border-color: var(--green); color: var(--green); }
.btn.go { background: var(--green); color: #06120b; border-color: var(--green); }
.btn.go:hover { background: #5ae88a; color: #06120b; }
.btn.small { padding: 7px 13px; font-size: 12px; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }
.btn[disabled]:hover { border-color: var(--line-hot); color: var(--ink); }

/* ── contract address ─────────────────────────────────────────────────── */

.ca-wrap { max-width: var(--max); margin: 0 auto; padding: 4px 20px 0; }
.ca {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  border: 1px solid var(--line-hot); border-radius: var(--radius);
  background: var(--panel); padding: 11px 14px;
}
.ca-tag {
  flex: none; font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--green);
}
.ca-addr {
  flex: 1 1 240px; min-width: 0; word-break: break-all;
  font-size: 13px; color: var(--ink);
}
.ca-copy {
  flex: none; padding: 6px 13px; border-radius: var(--radius);
  border: 1px solid var(--line-hot); background: var(--panel-2); color: var(--ink);
  font: 700 12px var(--mono); letter-spacing: .05em; text-transform: uppercase;
  cursor: pointer; transition: border-color .15s, color .15s, background .15s;
}
.ca-copy:hover { border-color: var(--green); color: var(--green); }
.ca-copy.ok { background: var(--green); color: #06120b; border-color: var(--green); }
.ca-link { flex: none; font-size: 12px; color: var(--ink-mute); text-decoration: none; letter-spacing: .04em; }
.ca-link:hover { color: var(--green); }

.foot-ca {
  border: 0; background: none; padding: 0; cursor: pointer;
  color: var(--ink-mute); font: 12.5px var(--mono); letter-spacing: .02em;
  transition: color .15s;
}
.foot-ca:hover { color: var(--green); }
.foot-ca.ok { color: var(--green); }

/* ── sections ─────────────────────────────────────────────────────────── */

.band {
  max-width: var(--max); margin: 0 auto;
  padding-block: 48px; padding-inline: 20px;
  border-top: 1px solid var(--line);
}
h2 {
  margin: 0 0 14px; font-size: clamp(20px, 2.8vw, 28px);
  letter-spacing: -.01em; font-weight: 700;
}
h3 { margin: 34px 0 12px; font-size: 15px; font-weight: 700; color: var(--green); }
.band p { max-width: 74ch; color: var(--ink-dim); }
.band p strong, .band p b { color: var(--ink); }
.sub { margin-top: -6px; font-size: 14px; }
code { color: var(--green); font-size: .93em; }

/* ── game picker ──────────────────────────────────────────────────────── */

.picker { display: flex; gap: 10px; flex-wrap: wrap; margin: 22px 0 2px; }
.pick {
  flex: 1 1 200px; text-align: left; cursor: pointer; position: relative;
  display: flex; flex-direction: column; gap: 3px;
  padding: 12px 14px; border-radius: var(--radius);
  border: 1px solid var(--line-hot); background: var(--panel);
  color: var(--ink); font: inherit;
  transition: border-color .15s, background .15s, box-shadow .15s;
}
.pick:hover { border-color: var(--green); }
.pick[aria-selected="true"] {
  border-color: var(--green); background: var(--panel-2);
  box-shadow: inset 0 0 0 1px var(--green);
}
.pick b { font-size: 15px; letter-spacing: .02em; }
.pick span { font-size: 12px; color: var(--ink-mute); }
.pick.soon { opacity: .82; }
.pick .badge {
  position: absolute; top: 10px; right: 12px; font-style: normal;
  font-size: 10px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--amber); border: 1px solid #f0b23c55; border-radius: 3px; padding: 1px 6px;
}

/* ── console ──────────────────────────────────────────────────────────── */

.console {
  margin: 26px 0 16px;
  border: 1px solid var(--line-hot); border-radius: var(--radius);
  background: var(--panel); overflow: hidden;
}
.console-head {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-bottom: 1px solid var(--line);
  background: var(--panel-2); font-size: 12.5px;
  letter-spacing: .05em; text-transform: uppercase; color: var(--ink-mute);
}
.console-head .spacer { margin-left: auto; }
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ink-mute); flex: none;
}
.dot.busy { background: var(--amber); box-shadow: 0 0 8px var(--amber); animation: pulse 1s infinite; }
.dot.ok   { background: var(--green); box-shadow: 0 0 8px var(--green); }
.dot.bad  { background: var(--red);   box-shadow: 0 0 8px var(--red); }
@keyframes pulse { 50% { opacity: .35; } }

.bar { height: 2px; background: var(--line); }
.bar span {
  display: block; height: 100%; width: 0;
  background: var(--green); box-shadow: 0 0 10px var(--green);
  transition: width .2s linear;
}

.log {
  margin: 0; padding: 14px; max-height: 260px; overflow: auto;
  font: 12.5px/1.75 var(--mono); color: var(--ink-dim);
  background: #060907; white-space: pre-wrap; word-break: break-word;
}
.log b   { color: var(--ink); font-weight: 400; }
.log .g  { color: var(--green); }
.log .a  { color: var(--amber); }
.log .r  { color: var(--red); }
.log .d  { color: var(--ink-mute); }

.stage { border-top: 1px solid var(--line); background: #000; position: relative; }
.stage canvas {
  display: block; width: 100%; height: auto; max-height: 60vh;
  image-rendering: pixelated; background: #000;
}
.stage-note {
  position: absolute; inset: 0; display: grid; place-items: center;
  padding: 24px; text-align: center; color: var(--ink-mute); font-size: 13px;
}
.stage-note[hidden] { display: none; }

/* ── metric cells ─────────────────────────────────────────────────────── */

.grid4 {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 10px;
}
.cell {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--panel); padding: 14px 16px;
}
.cell span {
  display: block; font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--ink-mute); margin-bottom: 7px;
}
.cell b { font-size: 20px; font-weight: 700; letter-spacing: -.01em; }
.cell b.mono-sm { font-size: 12px; font-weight: 400; color: var(--green); word-break: break-all; }

/* ── notes, lists ─────────────────────────────────────────────────────── */

.note {
  margin-top: 26px; padding: 18px 20px;
  border: 1px solid var(--line); border-left: 2px solid var(--green);
  border-radius: 0 var(--radius) var(--radius) 0; background: var(--panel);
}
.note h4 { margin: 0 0 12px; font-size: 14px; color: var(--green); }
.checks { margin: 0; padding: 0; list-style: none; }
.checks li {
  position: relative; padding-left: 22px; margin-bottom: 10px;
  font-size: 13.5px; color: var(--ink-dim);
}
.checks li:last-child { margin-bottom: 0; }
.checks li::before { content: "×"; position: absolute; left: 4px; color: var(--red); font-weight: 700; }
.checks b { color: var(--ink); font-weight: 700; }

.steps { margin: 26px 0 0; padding: 0; list-style: none; counter-reset: s; }
.steps li {
  position: relative; padding-left: 44px; margin-bottom: 18px; counter-increment: s;
}
.steps li::before {
  content: counter(s, decimal-leading-zero);
  position: absolute; left: 0; top: 0;
  color: var(--green-dim); font-size: 13px; font-weight: 700;
  border: 1px solid var(--line-hot); border-radius: var(--radius);
  width: 30px; height: 26px; display: grid; place-items: center;
}
.steps b { display: block; margin-bottom: 3px; color: var(--green); font-size: 14px; }
.steps p { margin: 0; font-size: 13.5px; }

/* ── table ────────────────────────────────────────────────────────────── */

.tablewrap {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--panel); overflow-x: auto;
}
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  text-align: left; padding: 11px 14px; white-space: nowrap;
  font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-mute); border-bottom: 1px solid var(--line); font-weight: 400;
}
tbody td { padding: 11px 14px; border-bottom: 1px solid var(--line); white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
tbody td:first-child { color: var(--ink); white-space: normal; }
tbody td.num { color: var(--green); }

.fineprint { margin-top: 16px; font-size: 12.5px; color: var(--ink-mute); line-height: 1.7; }

/* ── status ───────────────────────────────────────────────────────────── */

.status {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 10px; margin: 24px 0 0;
}
.status > div {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--panel); padding: 18px 20px;
}
.status h3 {
  margin: 0 0 12px; font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--ink-mute);
}
.status ul { margin: 0; padding: 0; list-style: none; }
.status li {
  position: relative; padding-left: 20px; margin-bottom: 8px;
  font-size: 13.5px; color: var(--ink-dim);
}
.status .done li::before { content: "+"; position: absolute; left: 3px; color: var(--green); }
.status .todo li::before { content: "·"; position: absolute; left: 5px; color: var(--ink-mute); }

/* ── footer ───────────────────────────────────────────────────────────── */

footer {
  border-top: 1px solid var(--line);
  max-width: var(--max); margin: 34px auto 0; padding: 26px 20px 46px;
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  color: var(--ink-mute); font-size: 12.5px;
}
.sep { color: var(--line-hot); }

@media (max-width: 680px) {
  .top { padding: 12px 16px; gap: 12px; }
  .top nav { gap: 14px; width: 100%; }
  .hero { padding-top: 48px; }
  .band { padding-block: 36px; }
}