/* Estilos generales */
body {
    background: linear-gradient(45deg, #f97316, #f59e0b, #f97316, #ea580c);
    background-size: 400% 400%;
    animation: gradientFlow 10s ease infinite;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    margin: 0;
    height: 100vh;
}

@keyframes gradientFlow {
    0% {
        background-position: 0% 0%;
    }
    50% {
        background-position: 100% 100%;
    }
    100% {
        background-position: 0% 0%;
    }
}

/* Contenedor del login */
.login-box {
    max-width: 400px;
    width: 100%;
    background-color: #ffffff;
    border-radius: 15px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Encabezado */
h2 {
    color: #1e3a8a;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Formulario */
.form-label {
    font-weight: 600;
    color: #2d3748;
}

.form-control {
    border-radius: 8px;
    border-color: #e2e8f0;
    box-shadow: none;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    border-color: #1e3a8a;
    box-shadow: 0 0 5px rgba(30, 58, 138, 0.2);
}

/* Botón */
.btn-primary {
    background-color: #1e3a8a;
    border-color: #1e3a8a;
    border-radius: 8px;
    padding: 10px 20px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #163172;
    border-color: #163172;
    transform: scale(1.05);
}

/* Animaciones */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.login-box {
    animation: fadeIn 0.5s ease-in-out;
}

/* Responsividad */
@media (max-width: 576px) {
    .login-box {
        padding: 15px;
        margin: 10px;
    }

    h2 {
        font-size: 1.5rem;
    }
}