/* General Reset y Box Sizing */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Contenedor principal del formulario */
.login-container {
    font-family: 'Nunito', sans-serif;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 40px;
    max-width: 500px;
    margin: 100px auto;
    font-size: 1rem;
    color: #333;
}

/* Encabezado */
.login-container h1 {
    text-align: center;
    color: #333;
    font-weight: bold;
    font-size: 2rem;
    margin-bottom: 20px;
}

/* Grupo de campos */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    font-weight: bold;
    color: #555;
    margin-bottom: 5px;
    display: block;
    font-size: 1.125rem;
}

/* Campos de texto */
.form-control {
    width: 100%;
    border: 1px solid #ccc;
    border-radius: 6px;
    padding: 12px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    border-color: #349B7D;
    box-shadow: 0 0 5px rgba(52, 155, 125, 0.5);
}

/* Botón principal */
.btn-primary {
    width: 100%;
    background-color: #349B7D;
    border-color: #349B7D;
    color: white;
    font-size: 1.125rem;
    font-weight: bold;
    border-radius: 6px;
    padding: 12px;
    transition: background 0.3s ease;
    margin-top: 10px;
}

.btn-primary:hover {
    background-color: #2b8264;
}

/* Mensajes de error generales */
.alert-danger {
    background: #ff6b6b;
    color: #fff;
    border-radius: 6px;
    padding: 12px;
    text-align: center;
    font-weight: bold;
    margin-bottom: 20px;
    font-size: 1rem;
}

/* Ayuda bajo los campos */
.help-block {
    color: #ff4d4d;
    font-size: 0.875rem;
    margin-top: 5px;
}

/* Media queries para responsividad */

/* Tablets y pantallas medianas */
@media (max-width: 1024px) {
    .login-container {
        font-size: 0.95rem;
    }

    .login-container h1 {
        font-size: 1.75rem;
    }

    .form-group label {
        font-size: 1rem;
    }

    .form-control {
        font-size: 0.95rem;
    }

    .btn-primary {
        font-size: 1rem;
    }

    .alert-danger {
        font-size: 0.95rem;
    }
}

/* Dispositivos móviles */
@media (max-width: 768px) {
    .login-container {
        font-size: 1rem;
        padding: 30px;
        margin: 60px 16px;
        width: auto;
    }

    .login-container h1 {
        font-size: 1.75rem;
    }

    .form-group label {
        font-size: 1.1rem;
    }

    .form-control {
        font-size: 1.05rem;
        padding: 14px;
    }

    .btn-primary {
        font-size: 1.15rem;
        padding: 14px;
    }

    .alert-danger {
        font-size: 1rem;
        padding: 14px;
    }

    .help-block {
        font-size: 0.95rem;
    }
}