.c-btn {
    --btn-bg: #3182F6;
    --btn-color: #fff;
    --btn-border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: var(--space-33);
    border-radius: var(--space-20);
    background: var(--btn-bg);
    color: var(--btn-color);
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition:
        background-color 0.2s ease,
        border-color 0.2s ease,
        color 0.2s ease,
        opacity 0.2s ease;
    border: 0;
    line-height: 1;
    font-size: var(--fs-25);
}

.c-btn--primary {
    --btn-bg: #244CB3;
    --btn-color: #fff;
    --btn-border: #244CB3;
}

.c-btn--secondary {
    --btn-bg: #fff;
    --btn-color: #3182F6;
    --btn-border: #8F99A5;
}

.c-btn--sm {
    min-height: 40px;
    padding: 0 14px;
    font-size: 14px;
}

.c-btn--md {
    min-height: 48px;
    padding: 0 20px;
    font-size: var(--fs-21);
}

.c-btn--lg {
    width: 100%;
}

.c-btn__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
}

.c-btn__icon img {
    display: block;
    width: 3rem;
    height: 3rem;
    object-fit: contain;
}

.c-btn.is-disabled {
    cursor: not-allowed;
    pointer-events: none;
}

/* 일반 disabled: 회색 처리 */
.c-btn.c-btn--disabled-gray {
    background: #F2F4F6;
    color: #616B79;
    opacity: 1;
}

/* color disabled: 기존 버튼 컬러 유지 */
.c-btn.c-btn--disabled-color {
    background: #C6D5EA;
    color: #fff;
}