/* Chem Shapes: layout only. Tokens and base elements come from ../shared/base.css. */

.bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.bar.center { justify-content: center; margin: 20px 0; }

.card + .card { margin-top: 20px; }
.card h2 { margin-bottom: 14px; }

/* the compound being quizzed is the hero */
.quiz { padding-top: 0; }
.hero {
  margin: 0 -24px 24px;
  padding: 36px 24px;
  background: var(--chem);
  border-bottom: var(--border);
  border-radius: var(--radius) var(--radius) 0 0;
  text-align: center;
}
.formula {
  font-size: clamp(3rem, 2rem + 5vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
}
.formula sub, .formula sup { font-size: 0.5em; font-weight: 600; }

.q + .q { margin-top: 22px; }
.q h3 { margin-bottom: 10px; color: var(--ink-2); }
.q label { display: block; }
.q .feedback { margin-top: 10px; }

/* choice buttons: outlined until picked, ink-filled when picked, colored after check */
.btn-row, .angle-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.btn-row .big-btn { flex: 1 1 140px; }
.big-btn, .angle-btn { background: var(--card); color: var(--ink); border-color: var(--line); }
.big-btn:hover:not(:disabled), .angle-btn:hover:not(:disabled) { background: var(--paper-deep); border-color: var(--ink); }
.btn-selected, .btn-selected:hover:not(:disabled) { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn-correct, .btn-reveal, .angle-correct, .angle-reveal { background: var(--right-bg); color: var(--right); border-color: var(--right); }
.btn-wrong, .angle-wrong { background: var(--wrong-bg); color: var(--wrong); border-color: var(--wrong); }
.btn-dim { opacity: 0.4; }
.big-btn:disabled, .angle-btn:disabled { opacity: 1; cursor: default; }
.btn-dim:disabled { opacity: 0.4; }

.shape-input.input-correct { border-color: var(--right); background: var(--right-bg); color: var(--right); }
.shape-input.input-wrong { border-color: var(--wrong); background: var(--wrong-bg); color: var(--wrong); }
.shape-input:disabled { opacity: 1; }

.actions { display: flex; gap: 10px; margin-top: 26px; }
.actions button { flex: 1 1 auto; }

.explanation { margin-top: 16px; line-height: 1.6; }
.explanation strong { display: block; margin-bottom: 4px; }

.complete { text-align: center; }
.final-score { font-size: 3rem; font-weight: 800; font-variant-numeric: tabular-nums; margin: 6px 0 2px; }
.final-sub { color: var(--ink-2); margin-bottom: 20px; }

.table-wrap { overflow-x: auto; }
.table-wrap table { min-width: 560px; }

@media (max-width: 480px) {
  .card { padding: 20px; }
  .hero { margin: 0 -20px 20px; padding: 28px 20px; }
}