body {
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 100%);
    min-height: 100vh;
}

.card {
    border-radius: 1rem;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeIn 0.5s ease-out;
}

.btn-outline-primary {
    transition: all 0.3s ease;
}

.btn-outline-primary:hover {
    transform: translateX(5px);
}

@media (max-width: 768px) {
    .display-3 {
        font-size: 2rem;
    }

    .btn-lg {
        font-size: 1rem;
        padding: 0.5rem 1rem;
    }

    .question {
        font-size: 1.25rem !important;
    }
}

/* Animação para resposta correta */
@keyframes correctAnswer {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0.7);
    }
    25% {
        transform: scale(1.05);
        background-color: #28a745;
        border-color: #28a745;
        color: white;
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 0 0 10px rgba(40, 167, 69, 0.3);
        background-color: #28a745;
        border-color: #28a745;
        color: white;
    }
    75% {
        transform: scale(1.02);
        box-shadow: 0 0 0 5px rgba(40, 167, 69, 0.5);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0);
    }
}

/* Animação para resposta errada */
@keyframes wrongAnswer {
    0% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-10px);
        background-color: #dc3545;
        border-color: #dc3545;
        color: white;
    }
    75% {
        transform: translateX(10px);
        background-color: #dc3545;
        border-color: #dc3545;
        color: white;
    }
    100% {
        transform: translateX(0);
    }
}

@keyframes slideIn {
    from {
        right: -30px;
        opacity: 0;
    }
    to {
        right: 20px;
        opacity: 1;
    }
}

@keyframes fadeInLeft {
    from {
        left: -20px;
        opacity: 0;
    }
    to {
        left: 15px;
        opacity: 1;
    }
}

@keyframes starSpin {
    0% {
        transform: translateY(-50%) rotate(0deg) scale(0);
        opacity: 0;
    }
    50% {
        transform: translateY(-50%) rotate(180deg) scale(1.2);
        opacity: 1;
    }
    100% {
        transform: translateY(-50%) rotate(360deg) scale(1);
        opacity: 1;
    }
}

@keyframes shakeIcon {
    0%, 100% {
        transform: translateY(-50%) rotate(0deg);
    }
    25% {
        transform: translateY(-50%) rotate(15deg);
    }
    75% {
        transform: translateY(-50%) rotate(-15deg);
    }
}

/* Classe para animação de acerto */
.answer-correct {
    animation: correctAnswer 0.6s ease-out forwards !important;
    background-color: #28a745 !important;
    border-color: #28a745 !important;
    color: white !important;
    position: relative;
}

/* Efeito de confete para acerto */
.answer-correct::after {
    content: "✨";
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
    animation: starSpin 0.5s ease-out;
}

/* Classe para animação de erro */
.answer-wrong {
    animation: wrongAnswer 0.5s ease-in-out forwards !important;
    background-color: #dc3545 !important;
    border-color: #dc3545 !important;
    color: white !important;
    position: relative;
}

/* Efeito de "X" para erro */
.answer-wrong::after {
    content: "❌";
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.1rem;
    animation: shakeIcon 0.3s ease-out;
}

/* Estilo para DESTACAR A RESPOSTA CORRETA (sempre em verde) */
.answer-highlight-correct {
    background-color: #28a745 !important;
    border-color: #28a745 !important;
    color: white !important;
    transform: scale(1.02);
    transition: all 0.3s ease;
    position: relative;
}

/* Efeito de brilho para a resposta correta */
.answer-highlight-correct::before {
    content: "✓";
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.3rem;
    font-weight: bold;
    color: white;
    animation: fadeInLeft 0.3s ease-out;
}