/* 버튼 클릭 시 크기 변화 방지 */
.btn,
.btn-main,
.btn-lg,
.btn-sm,
.btn-xs,
button,
input[type="button"],
input[type="submit"],
input[type="reset"],
#send_message {
    transform: none !important;
    transition: none !important;
    scale: 1 !important;
    box-shadow: none !important;
}

.btn:active,
.btn-main:active,
.btn-lg:active,
.btn-sm:active,
.btn-xs:active,
button:active,
input[type="button"]:active,
input[type="submit"]:active,
input[type="reset"]:active,
#send_message:active {
    transform: none !important;
    transition: none !important;
    scale: 1 !important;
    box-shadow: none !important;
}

.btn:focus,
.btn-main:focus,
.btn-lg:focus,
.btn-sm:focus,
.btn-xs:focus,
button:focus,
input[type="button"]:focus,
input[type="submit"]:focus,
input[type="reset"]:focus,
#send_message:focus {
    transform: none !important;
    transition: none !important;
    scale: 1 !important;
    box-shadow: none !important;
}

/* 폼 검증 시에도 버튼 크기 유지 */
.btn-main[disabled],
#send_message[disabled] {
    transform: none !important;
    transition: none !important;
    scale: 1 !important;
    box-shadow: none !important;
}

/* 모든 버튼 상태에서 크기 변화 방지 */
.btn *,
.btn-main *,
button *,
input[type="button"] *,
input[type="submit"] *,
input[type="reset"] *,
#send_message * {
    transform: none !important;
    transition: none !important;
    scale: 1 !important;
}

/* SIGN UP 버튼 특별 처리 */
.btn.bg-color,
.btn.bg-color:active,
.btn.bg-color:focus,
.btn.bg-color:hover {
    transform: none !important;
    transition: none !important;
    scale: 1 !important;
    box-shadow: none !important;
    outline: none !important;
}

/* 모든 버튼 클래스에 대한 강력한 크기 고정 */
[class*="btn"] {
    transform: none !important;
    transition: none !important;
    scale: 1 !important;
    box-shadow: none !important;
}

[class*="btn"]:active,
[class*="btn"]:focus,
[class*="btn"]:hover {
    transform: none !important;
    transition: none !important;
    scale: 1 !important;
    box-shadow: none !important;
    outline: none !important;
}

/* 입력 필드와 버튼 높이 맞춤 */
.btn-lg {
    height: 48px !important;
    line-height: 1.5 !important;
    padding: 0.75rem 1.5rem !important;
}

/* form-control-lg와 같은 높이로 맞춤 */
.form-control-lg + .btn-lg,
.form-control-lg ~ .btn-lg {
    height: 48px !important;
    line-height: 1.5 !important;
    padding: 0.75rem 1.5rem !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
}