body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #003366; 
    color: #000000;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.quiz-container {
    background-color: #FFFFFF;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    width: 90%;
    max-width: 600px;
    text-align: center;
}

.quiz-header {
    border-bottom: 2px solid #ADD8E6;
    padding-bottom: 15px;
    margin-bottom: 25px;
}

.title {
    color: #003366;
    font-size: 2em;
    margin-bottom: 5px;
}

.score-area {
    font-size: 1.2em;
    font-weight: bold;
    color: #1F6BFF;
}

.question-text {
    color: #000000;
    margin-bottom: 30px;
    font-size: 1.3em;
    min-height: 40px; /* Para evitar saltos al cargar */
}

.answers-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
}

/* Estilo Base para los Botones de Respuesta */
.answer-btn {
    background-color: #1F6BFF;
    color: #FFFFFF;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    box-shadow: 0 3px 0 #003366;
}

.answer-btn:hover:not(:disabled) {
    background-color: #007BFF;
    transform: translateY(-1px);
}

.answer-btn:active:not(:disabled) {
    transform: translateY(2px);
    box-shadow: 0 1px 0 #003366;
}

/* Feedback Visual (Estados de la respuesta) */
.answer-btn.correct {
    background-color: #28A745; /* Verde */
    box-shadow: 0 3px 0 #1e7e34;
}

.answer-btn.incorrect {
    background-color: #DC3545; /* Rojo */
    box-shadow: 0 3px 0 #b32d3b;
}

/* Botones Deshabilitados */
.answer-btn:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.feedback {
    min-height: 20px;
    font-weight: bold;
    margin-top: 15px;
}

/* --- Botones de Acción (Start / Home) --- */
.actions {
    display: flex;
    justify-content: space-around;
    padding-top: 20px;
    border-top: 1px solid #EFEFEF;
}

.btn-action {
    background-color: #003366;
    color: #FFFFFF;
    padding: 10px 20px;
    border-radius: 5px;
    border: none;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-action:hover {
    background-color: #1F6BFF;
}

.btn-home {
    display: flex;
    align-items: center;
    background-color: #000000;
    color: #FFFFFF;
    padding: 10px 15px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s;
}

.btn-home .material-icons {
    margin-right: 5px;
}

.btn-home:hover {
    background-color: #333333;
}

@media (max-width: 500px) {
    .quiz-container {
        padding: 20px;
    }
    .actions {
        flex-direction: column;
        gap: 10px;
    }
}