.quiz-shell{--board-reserve:7rem;--board-size:min(100%, calc(100dvh - var(--board-reserve)));justify-content:flex-start;align-items:center;gap:var(--space-4);min-height:100vh;padding:var(--space-4) var(--space-4) var(--space-4);background:var(--bg);flex-direction:column;display:flex}.quiz-shell__board{width:100%;max-width:var(--board-size);border-radius:var(--radius-md);transition:box-shadow .25s;position:relative}.quiz-shell__resizer{border-bottom-right-radius:var(--radius-md);background:repeating-linear-gradient(135deg, transparent 0 3px, var(--btn-bg) 3px 5px);clip-path:polygon(100% 0,100% 100%,0 100%);cursor:nwse-resize;touch-action:none;opacity:1;z-index:3;filter:drop-shadow(0 0 1px #0000008c);transform-origin:100% 100%;border:none;width:22px;height:22px;padding:0;transition:transform .15s;position:absolute;bottom:0;right:0}.quiz-shell__resizer:hover,.quiz-shell__resizer:focus-visible{outline:none;transform:scale(1.15)}.quiz-shell__board--correct{box-shadow:0 0 0 3px var(--feedback-correct), 0 0 28px -4px var(--feedback-correct)}.quiz-shell__board--incorrect{box-shadow:0 0 0 3px var(--feedback-incorrect), 0 0 28px -4px var(--feedback-incorrect)}@media (prefers-reduced-motion:reduce){.quiz-shell__board{transition:none}}.quiz-shell__board-skeleton{aspect-ratio:1;border-radius:var(--radius-md,8px);background:var(--surface,#7f7f7f1f);width:100%;animation:1.5s ease-in-out infinite quiz-shell-board-pulse}@keyframes quiz-shell-board-pulse{50%{opacity:.55}}