body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #d0e7f5, #8bc6ef); /* Azul más oscuro */
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.login-container {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    width: 350px;
    text-align: center;
    animation: fadeIn 0.5s ease-out;
    border: 2px solid #1976d2; /* Azul más oscuro */
}

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

.logo-container {
    margin-bottom: 20px;
}

.logo-container img {
    max-width: 150px;
    height: auto;
    animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

h2 {
    color: #1976d2; /* Azul más oscuro */
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 15px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #333;
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: calc(100% - 22px);
    padding: 14px;
    border: 1px solid #8bc6ef; /* Azul más oscuro */
    border-radius: 5px;
    box-sizing: border-box;
    transition: border-color 0.3s ease;
    font-size: 1.1rem;
}

.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus {
    border-color: #1976d2; /* Azul más oscuro */
    outline: none;
    box-shadow: 0 0 5px rgba(25, 118, 210, 0.5); /* Azul más oscuro */
}

.button-container {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

.ingresar, .atras {
    background-color: #1976d2; /* Azul más oscuro */
    color: white;
    padding: 12px 20px; /* Tamaño uniforme */
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    font-size: 1rem;
    margin: 0 5px;
    min-width: 100px; /* Asegura el mismo ancho mínimo */
}

.ingresar:hover, .atras:hover {
    background-color: #1565c0; /* Azul más oscuro al pasar el ratón */
    transform: translateY(-2px);
}

.error-message {
    background-color: #ffcdd2;
    color: #d32f2f;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 15px;
    text-align: center;
}