#converter {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.converter-container {
    max-width: 800px;
    margin: 24px auto;
}

/* 변환 타입 선택 */
#conversionType {
    width: 100%;
    padding: 14px;
    margin-bottom: 24px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 16px;
    color: #2A395A;
    background: #f8f9fa;
    cursor: pointer;
    transition: all 0.2s;
}

#conversionType:focus {
    outline: none;
    border-color: #4263eb;
    box-shadow: 0 0 0 3px rgba(66, 99, 235, 0.1);
}

/* 변환 입력 영역 */
.conversion-inputs {
    display: grid;
    gap: 40px;  /* 화살표를 위한 공간 확보 */
    background: #f8f9fa;
    padding: 24px;
    border-radius: 12px;
    position: relative;
}

.input-group {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 12px;
}

.input-group input {
    padding: 12px 16px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.2s;
}

.input-group input:focus {
    outline: none;
    border-color: #4263eb;
    box-shadow: 0 0 0 3px rgba(66, 99, 235, 0.1);
}

.input-group input[readonly] {
    background: #e9ecef;
    color: #2A395A;
    font-weight: 500;
}

.input-group select {
    padding: 12px 16px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 15px;
    color: #495057;
    cursor: pointer;
    transition: all 0.2s;
    background: white;
}

.input-group select:focus {
    outline: none;
    border-color: #4263eb;
    box-shadow: 0 0 0 3px rgba(66, 99, 235, 0.1);
}

/* 단위 옵션 스타일링 */
.input-group select option {
    padding: 8px;
    font-size: 15px;
}

/* 화살표 아이콘 중앙 배치 */
.conversion-inputs::after {
    content: "\f338"; /* Font Awesome 수직 양방향 화살표 */
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    color: #4263eb;
    font-size: 24px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 50%;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

/* 모바일에서 화살표 위치 조정 */
@media (max-width: 768px) {
    #converter {
        padding: 20px;
    }

    .input-group {
        grid-template-columns: 1fr;
    }

    .conversion-inputs {
        padding: 16px;
        gap: 50px;  /* 모바일에서 간격 조정 */
    }
}