:root {
  --void: #070a14;
  --panel: #101728;
  --panel-edge: #1f2b45;
  --ink: #e8ecf6;
  --ink-dim: #97a3bd;
  --accent: #ffca4a;
  --hit: #34d399;
  --miss: #f87171;
  --radius: 12px;
}

* { box-sizing: border-box; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

body {
  margin: 0;
  padding: 2rem 1rem 3rem;
  min-height: 100vh;
  background:
    radial-gradient(1px 1px at 20% 30%, #ffffffaa, transparent) 0 0 / 160px 160px repeat,
    radial-gradient(1px 1px at 70% 15%, #ffffff99, transparent) 40px 90px / 220px 220px repeat,
    radial-gradient(1px 1px at 40% 80%, #ffffff88, transparent) 90px 30px / 130px 130px repeat,
    radial-gradient(1200px 700px at 50% -10%, #1b2440, var(--void));
  color: var(--ink);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.app { max-width: 44rem; margin: 0 auto; }

.masthead { text-align: center; margin-bottom: 2rem; }
.masthead h1 { margin: 0; font-size: clamp(2rem, 7vw, 3rem); letter-spacing: -0.02em; }
.tagline { margin: 0.5rem auto 0; max-width: 32rem; color: var(--ink-dim); font-size: 0.95rem; }

.screen {
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.blurb { margin-top: 0; color: var(--ink-dim); }

.primary {
  appearance: none;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #221a00;
  font: inherit;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  cursor: pointer;
}
.primary:hover { filter: brightness(1.08); }
.primary:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }

.statusbar {
  display: flex;
  justify-content: space-between;
  color: var(--ink-dim);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.prompt { margin: 0.75rem 0 1.25rem; font-size: 1.35rem; line-height: 1.35; }

.options { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; }

.option {
  width: 100%;
  text-align: left;
  appearance: none;
  border: 1px solid var(--panel-edge);
  border-radius: 8px;
  background: #16203a;
  color: var(--ink);
  font: inherit;
  padding: 0.8rem 1rem;
  cursor: pointer;
}
.option:hover:not(:disabled) { border-color: var(--accent); }
.option:disabled { cursor: default; opacity: 0.75; }
.option.correct { border-color: var(--hit); background: #10352a; opacity: 1; }
.option.wrong { border-color: var(--miss); background: #3a1a1c; opacity: 1; }

.reveal { margin-top: 1.5rem; border-top: 1px solid var(--panel-edge); padding-top: 1.25rem; }

.verdict { margin: 0 0 1rem; font-weight: 600; }
.verdict.correct { color: var(--hit); }
.verdict.wrong { color: var(--miss); }

.reveal-figure { margin: 0 0 1rem; }
.reveal-figure img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  max-height: 22rem;
  object-fit: contain;
  border-radius: 8px;
  background: #0b1020;
}
.reveal-figure figcaption { margin-top: 0.4rem; color: var(--ink-dim); font-size: 0.75rem; }

.reveal-details { display: grid; grid-template-columns: auto 1fr; gap: 0.25rem 1rem; margin: 0 0 1rem; }
.reveal-details dt { color: var(--ink-dim); font-size: 0.85rem; }
.reveal-details dd { margin: 0; }

.reveal-more { margin: 0 0 1.25rem; }
.reveal-more a { color: var(--accent); }

.final-score { margin: 0; text-align: center; font-size: 3.5rem; font-weight: 700; letter-spacing: -0.03em; }
.rating { margin: 0.25rem 0 1.5rem; text-align: center; color: var(--ink-dim); }

.recap { list-style: none; margin: 0 0 1.5rem; padding: 0; display: grid; gap: 0.5rem; }
.recap li { border-left: 3px solid var(--panel-edge); padding: 0.35rem 0 0.35rem 0.75rem; }
.recap li.hit { border-left-color: var(--hit); }
.recap li.miss { border-left-color: var(--miss); }
.recap-prompt { margin: 0; font-size: 0.9rem; }
.recap-answer { margin: 0.15rem 0 0; color: var(--ink-dim); font-size: 0.9rem; }

.error-heading { margin-top: 0; color: var(--miss); }
.error-detail { color: var(--ink-dim); }

.colophon { margin-top: 1.5rem; text-align: center; color: var(--ink-dim); font-size: 0.75rem; }

@media (max-width: 30rem) {
  .screen { padding: 1rem; }
  .prompt { font-size: 1.15rem; }
  .final-score { font-size: 2.5rem; }
}