/* Estilo del contenedor del formulario */
.login-container {
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

/* Estilos modernos para inputs */
.form-group input:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* Floating labels */
.form-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-group input {
    padding: 10px 10px 10px 5px;
    display: block;
    width: 100%;
    border: none;
    border-bottom: 2px solid #ccc;
    border-radius: 0;
    background: transparent;
    transition: all 0.3s ease;
}

.form-group input:focus {
    border-bottom: 2px solid #007bff;
    outline: none;
}

.form-group label {
    color: #999;
    font-size: 16px;
    font-weight: normal;
    position: absolute;
    pointer-events: none;
    left: 5px;
    top: 10px;
    transition: 0.3s ease all;
}

.form-group input:focus~label,
.form-group input:valid~label {
    top: -20px;
    font-size: 12px;
    color: #007bff;
}

/* Botón moderno */
.btn-modern {
    background-color: #007bff;
    border: none;
    color: #fff;
    padding: 12px 20px;
    border-radius: 50px;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.btn-modern:hover {
    background-color: #0056b3;
    box-shadow: 0 4px 10px rgba(0, 123, 255, 0.3);
}

/* Spinner */
.spinner-border {
    vertical-align: middle;
    margin-right: 10px;
}

/* Contenedor general */
.container {
    max-width: 500px;
    margin-top: 50px;
}