body {
    font-family: 'Arial', sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: rgb(179, 247, 232);
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 10px;
    width: 90%;
    max-width: 500px;
    text-align: center;
}

.screen {
    transition: all 0.3s ease;
}

.hidden {
    display: none;
}

h1 {
    color: #2c3e50;
    margin-bottom: 20px;
}

input[type="text"], input[type="number"] {
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
    width: 80%;
    max-width: 300px;
}

button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 20px;
    margin: 10px 5px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #2980b9;
}

.fraction-container {
    margin: 0px 0;
    padding: 5px;
    background-color: rgba(52, 152, 219, 0.1);
    border-radius: 12px;
    display: inline-block;
}

.fraction {
    display: inline-block;
    text-align: center;
    font-size: 24px;
    font-weight: bold;
}

.numerator, .denominator {
    padding: 5px 15px;
}

.fraction-line {
    border-top: 2px solid #2c3e50;
    margin: 5px 0;
}

.input-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 20px 0;
}

.fraction-slash {
    font-size: 24px;
    margin: 0 10px;
}

.message {
    min-height: 30px;
    margin: 15px 0;
    font-weight: bold;
}

.correct {
    color: #27ae60;
}

.incorrect {
    color: #e74c3c;
}

.info {
    color: #f39c12;
}

.score {
    font-size: 20px;
    margin: 15px 0;
    font-weight: bold;
    color: var(--primary-dark);
    background-color: rgba(52, 152, 219, 0.1);
    padding: 10px 15px;
    border-radius: 8px;
    display: inline-block;
}

/* Mantener todos los estilos anteriores y agregar: */
button:disabled {
    background-color: #95a5a6;
    cursor: not-allowed;
    opacity: 0.7;
}

/* Mantener todos los estilos anteriores y agregar: */
input:disabled {
    background-color: #ecf0f1;
    color: #7f8c8d;
    cursor: not-allowed;
}

/* Mantener todos los estilos anteriores y agregar: */

.fraction-input {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    margin: 0 10px;
    width: 60px;
}

.numerator-input, .denominator-input {
    width: 40px;
    text-align: center;
    padding: 5px;
    font-size: 18px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.fraction-input .fraction-line {
    width: 100%;
    height: 1px;
    background-color: #2c3e50;
    margin: 3px 0;
}

/* Estilo para cuando están deshabilitados */
.numerator-input:disabled, .denominator-input:disabled {
    background-color: #ecf0f1;
    color: #7f8c8d;
    border-color: #bdc3c7;
}

/* Ajustar el contenedor de inputs */
.input-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 20px 0;
    flex-direction: column;
}

/* Estilos para móviles */
@media (max-width: 600px) {
    .container {
        padding: 20px;
        width: 100%;
        border-radius: 0;
        margin: 0;
        min-height: 100vh;
    }

    h1 {
        font-size: 1.5rem;
    }

    button {
        padding: 10px 20px;
        font-size: 15px;
        width: 80%;
        margin: 8px auto;
        display: block;
    }

    .fraction {
        font-size: 24px;
    }

    .numerator-input, .denominator-input {
        width: 50px;
        font-size: 18px;
    }

    .fraction-input {
        width: 70px;
    }

    input[type="text"], input[type="number"] {
        width: 90%;
        padding: 10px 12px;
    }
}