:root {
  --bg: #050505;
  --fg: #ededed;
  --mute: #8a8a82;
  --line: #222220;
  --hair: #141412;
  --fail: #ff2a2a;
  --pass: #d6ff00;
  --warn: #ffc400;
  --pane: #0b0b0a;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "IBM Plex Mono", "Cascadia Code", "ui-monospace", "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.45;
  min-height: 100%;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.ticker {
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: #000;
  color: var(--pass);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 11px;
  height: 28px;
  display: flex;
  align-items: center;
}

.ticker-track {
  display: inline-block;
  white-space: nowrap;
  padding-left: 100%;
  animation: ticker 28s linear infinite;
}

@keyframes ticker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-100%); }
}

.top {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  align-items: end;
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--line);
}

.brand h1 {
  margin: 0;
  font-size: 28px;
  letter-spacing: 0.28em;
  font-weight: 500;
}

.brand .sub {
  color: var(--mute);
  letter-spacing: 0.08em;
  margin-top: 2px;
}

.clock {
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.clock .time {
  font-size: 36px;
  letter-spacing: 0.08em;
}

.clock .time.expire { color: var(--fail); }
.clock .cap { color: var(--mute); font-size: 11px; letter-spacing: 0.14em; }

.meta {
  text-align: right;
  color: var(--mute);
  font-size: 12px;
}

.meta b { color: var(--fg); font-weight: 500; }
.meta .pass { color: var(--pass); }

.stats {
  display: flex;
  gap: 18px;
  justify-content: flex-end;
}

.stat .k { display: block; letter-spacing: 0.16em; font-size: 10px; text-transform: uppercase; }
.stat .v { font-size: 18px; color: var(--fg); }

main {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 0;
  flex: 1;
  min-height: 0;
}

@media (max-width: 900px) {
  main { grid-template-columns: 1fr; }
  .top { grid-template-columns: 1fr; }
  .meta, .clock { text-align: left; }
}

.col {
  padding: 16px 20px 24px;
  min-width: 0;
}

.col + .col { border-left: 1px solid var(--line); }

.kicker {
  color: var(--mute);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 10px;
  margin-bottom: 8px;
}

.prompt {
  white-space: pre-wrap;
  background: var(--pane);
  border: 1px solid var(--line);
  padding: 14px;
  min-height: 120px;
}

.title-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.title-row h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

textarea {
  width: 100%;
  min-height: 220px;
  background: #000;
  color: var(--fg);
  border: 1px solid var(--line);
  padding: 12px;
  font: inherit;
  resize: vertical;
}

textarea:focus {
  outline: 1px solid var(--fg);
  border-color: var(--fg);
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
  align-items: center;
}

button, .btn {
  background: #000;
  color: var(--fg);
  border: 1px solid var(--fg);
  padding: 8px 12px;
  font: inherit;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

button:hover, .btn:hover { background: var(--fg); color: #000; }
button.ghost { border-color: var(--mute); color: var(--mute); }
button.ghost:hover { border-color: var(--fg); color: #000; background: var(--fg); }

kbd {
  border: 1px solid var(--line);
  padding: 1px 5px;
  color: var(--mute);
  font: inherit;
  font-size: 11px;
}

.hint { color: var(--mute); font-size: 12px; }

.diff, .incidents, .verdict {
  margin-top: 14px;
  border: 1px solid var(--line);
  background: var(--pane);
  padding: 10px 12px;
  min-height: 48px;
  white-space: pre-wrap;
  word-break: break-word;
}

.verdict.pass { border-color: var(--pass); color: var(--pass); }
.verdict.fail { border-color: var(--fail); color: var(--fail); }

.diff .expected { color: var(--pass); }
.diff .actual { color: var(--fail); }
.diff .same { color: var(--mute); }

.incidents {
  max-height: 220px;
  overflow: auto;
  color: var(--mute);
}

.incidents .item { border-top: 1px solid var(--hair); padding: 6px 0; }
.incidents .item:first-child { border-top: 0; }

.range {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--mute);
}

input[type="range"] {
  accent-color: var(--fg);
  width: 120px;
}

.reveal-box {
  margin-top: 10px;
  border-left: 2px solid var(--warn);
  padding: 8px 10px;
  color: var(--warn);
  display: none;
  white-space: pre-wrap;
}

.reveal-box.show { display: block; }

footer {
  border-top: 1px solid var(--line);
  padding: 8px 20px;
  color: var(--mute);
  letter-spacing: 0.08em;
  font-size: 11px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}