.bt-form {
    background-color: #181A1F;
    border-top: 8px solid #FD3C3D;
    margin: 0 auto;
    max-width: 600px;
    padding: 24px 16px;
}

.bt-invalid-feedback {
    color: #FD3C3D;
    display: none;
    font-size: 13px !important;
    margin-top: 6px;
}

.bt-check-flex {
    align-items: center;
    display: flex;
    gap: 12px;
}

.bt-form-check {
    margin-bottom: 24px;
}

.bt-form-check.is-invalid .bt-invalid-feedback {
    display: block;
}

.bt-form-checkbox-label {
    font-size: 13px;
    font-weight: 400 !important;
    margin: 0 !important;
    padding-right: 40px;
}

.bt-form-checkbox {
    appearance: none;
    position: relative;
    background-color: #222222 !important;
    border: 1px solid #FD3C3D !important;
    display: block;
    margin: 0 !important;
    width: 24px; height: 24px;
}

.bt-form-checkbox::before {
    position: absolute;
    width: 100%;
    height: 100%;
    text-align: center;
    white-space: pre;
    content: " ";
}

.bt-form-checkbox:checked::before {
    background-color: #FD3C3D;
    background-image: url("data:image/svg+xml,%3Csvg width='14' height='10' viewBox='0 0 14 10' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0.998291 4.9598L4.95809 8.9196L12.8777 1' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
}

.bt-form-checkbox:focus {
    outline: none !important;
}

.bt-form-label {
    font-size: 14px !important;
    font-weight: 600 !important;
}

.bt-form-input,
.bt-form-select {
    color: #ffffff !important;
    font-size: 16px;
    height: auto !important;
    line-height: 1.5 !important;
    padding: 8px 16px !important;
    min-height: 24px !important;
}

.bt-form-input.is-invalid {
    border-color: #FD3C3D !important;
}

.bt-form-input.is-invalid + .bt-invalid-feedback {
    display: block;
}

.bt-form-input::placeholder {
    color: rgba(255,255,255, .35);
}

.bt-form-margin {
    margin-bottom: 16px;
}

.bt-form-button {
    background-color: #FD3C3D !important;
    color: #ffffff !important;
    display: block;
    font-size: 18px;
    font-weight: 600;
    text-transform: uppercase;
    width: 100%;
}

.bt-form-title {
    color: #FD3C3D !important;
    font-size: 32px !important;
    font-weight: 800 !important;
    line-height: 1.1;
    margin-bottom: 12px;
}

.bt-form-subtitle {
    color: #ffffff !important;
    font-size: 16px !important;
    margin-bottom: 24px !important;
}

.bt-form-subtitle strong {
    /* color: #FD3C3D !important; */
}

.bt-form-confirm-title {
    color: #FD3C3D !important;
    font-size: 32px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
}

.bt-form-confirm-subtitle {
    font-size: 16px;
    margin-bottom: 0 !important;
}

@media (min-width: 768px) {
    .bt-form {
        padding: 32px 24px;
    }

    .bt-form-bg {
        background-image: url('../img/grafik-bg.jpg');
        background-position: center;
        background-repeat: no-repeat;
        background-size: cover;
        padding: 60px 30px 60px 30px;
    }
}

@media (min-width: 992px) {
    .bt-form {
        padding: 40px 32px;
    }

    .bt-form-bg {
        padding: 80px 30px 80px 30px;
    }

    .bt-form-check {
        margin-bottom: 28px !important;
    }

    .bt-form-margin {
        margin-bottom: 20px;
    }

    .bt-form-input,
    .bt-form-select {
        padding: 14px 16px !important;
    }
}

@media (min-width: 1400px) {
    .bt-form-bg {
        padding: 100px 30px 100px 30px;
    }
}