function calcDressing() {
  var type = document.getElementById('dressingType').value;
  var time = document.getElementById('dressingTime').value;
  var day  = document.getElementById('dressingDay').value;
  var air  = document.getElementById('dressingAircon').value;
  var adv  = document.getElementById('dressingAdvance').value;
  var ext  = document.getElementById('dressingExtend').value;

  // 楽屋料金表
  var feeRoom1 = {
    morning: 1170, afternoon: 1560, night: 1950,
    daytime: 2340, day_night: 3510, allday: 4160
  };

  var feeRoom2 = {
    morning: 1220, afternoon: 1620, night: 2030,
    daytime: 2430, day_night: 3650, allday: 4320
  };

  var feeRoom3 = {
    morning: 1220, afternoon: 1620, night: 2030,
    daytime: 2430, day_night: 3650, allday: 4320
  };

  var feeRoom4 = {
    morning: 610, afternoon: 810, night: 1020,
    daytime: 1210, day_night: 1830, allday: 2230
  };

  var feeOffice = {
    morning: 610, afternoon: 810, night: 1020,
    daytime: 1210, day_night: 1830, allday: 2230
  };

  var base = 0;
  if (type === 'room1') base = feeRoom1[time];
  if (type === 'room2') base = feeRoom2[time];
  if (type === 'room3') base = feeRoom3[time];
  if (type === 'room4') base = feeRoom4[time];
  if (type === 'office') base = feeOffice[time];

  // 土日祝 2割増
  var addHoliday = (day === 'holiday') ? Math.round(base * 0.2) : 0;

  // 空調 5割増
  var addAircon = (air === 'yes') ? Math.round(base * 0.5) : 0;

  // 繰上・延長（1時間あたり3割増）
  var count = 0;
  if (adv === 'yes') count++;
  if (ext === 'yes') count++;

  var finalFee = base + addHoliday + addAircon;

  if (count > 0) {
    var extra = Math.round(base * 0.3 * count);
    finalFee += extra;
  }

  // 最終結果だけ10円単位で切り捨て
  finalFee = Math.floor(finalFee / 10) * 10;

  document.getElementById('dressingResult').innerText = finalFee.toLocaleString();
}