:root {
  --bg: #0b0f17;
  --panel: #141a26;
  --panel-2: #1b2230;
  --ink: #e6edf3;
  --muted: #93a1b0;
  --accent: #5ad1c4;
  --good: #4ade80;
  --bad: #f87171;
  --border: #26303f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

header, main, footer {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

header { padding-top: 2.5rem; }

h1 {
  margin: 0;
  font-size: 2rem;
  letter-spacing: -0.02em;
}

.tagline {
  margin: 0.25rem 0 0.75rem;
  font-size: 1.15rem;
  color: var(--accent);
}

.sub {
  color: var(--muted);
  max-width: 70ch;
}

main { padding-top: 1.5rem; padding-bottom: 3rem; }

.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  margin-bottom: 1.75rem;
}

.control-row { display: flex; flex-direction: column; gap: 0.35rem; }

.control-row label {
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
}

.control-row output { color: var(--accent); font-variant-numeric: tabular-nums; }

select, input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

select {
  background: var(--panel-2);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem;
}

.hint { font-size: 0.72rem; color: var(--muted); }

.panels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.panel {
  margin: 0;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

figcaption {
  align-self: flex-start;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

canvas {
  width: 220px;
  height: 220px;
  image-rendering: pixelated;
  background: #000;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.bytes { margin: 0; font-variant-numeric: tabular-nums; color: var(--ink); }
.reduction {
  margin: 0;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.receipt { justify-content: flex-start; }
.recipt-label { font-size: 0.78rem; color: var(--muted); margin: 0; align-self: flex-start; }

.hash {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.72rem;
  word-break: break-all;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem;
  width: 100%;
  color: var(--accent);
}

button {
  background: var(--accent);
  color: #06231f;
  border: 0;
  border-radius: 8px;
  padding: 0.55rem 1rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 0.25rem;
}
button:hover { filter: brightness(1.08); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

.verify-result { margin: 0.4rem 0 0; font-weight: 600; min-height: 1.4em; }
.verify-result.ok { color: var(--good); }
.verify-result.fail { color: var(--bad); }

.honesty {
  margin-top: 1.75rem;
  padding: 1rem 1.1rem;
  background: var(--panel-2);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.88rem;
}

.status { color: var(--muted); font-size: 0.85rem; }

footer {
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
  padding-bottom: 2rem;
  color: var(--muted);
  font-size: 0.85rem;
}
footer a { color: var(--accent); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }