:root {
    --primary: #3B82F6;
}

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

/* Efeito de Silhueta */
.silhouette {
    filter: brightness(0) contrast(100%);
    pointer-events: none;
}

.reveal {
    filter: brightness(1) contrast(100%) drop-shadow(0 0 15px rgba(255,255,255,0.5));
}

.option-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.25rem;
    border-radius: 1.25rem;
    font-weight: 800;
    text-transform: uppercase;
    transition: all 0.2s ease;
    cursor: pointer;
}

.option-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.option-btn.correct {
    background: #22c55e !important;
    border-color: #4ade80 !important;
    color: white;
}

.option-btn.wrong {
    background: #ef4444 !important;
    border-color: #f87171 !important;
    color: white;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-8px); }
    75% { transform: translateX(8px); }
}

.shake {
    animation: shake 0.3s ease-in-out;
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-thumb { background: #1e293b; border-radius: 10px; }