html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  height: 100%;
  position: fixed;
  width: 100%;
  font-family: Arial, Helvetica Neue, Helvetica, sans-serif;
  font-size: 14px;
}
body {
  padding-top: 20px;
  box-sizing: border-box;
}
#calendar {
  max-width: 1100px;
  margin: 0 auto;
  height: 95vh;
  padding: 0 10px;
}
.fc-backButton-button {
  background-color: #2c3e50 !important;
  border-color: #2c3e50 !important;
}
.fc-daygrid-day-number {
  color: #333 !important;
  font-size: 1.1em !important;
  text-decoration: none !important;
  padding: 4px !important;
}
.fc-timegrid-slot-label-cushion {
  color: #333 !important;
}
* {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
}
input, select, dialog * {
  -webkit-user-select: text;
  -webkit-touch-callout: default;
}
dialog {
  border: none;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  padding: 20px;
  width: 420px;
  max-width: 90vw;
}
dialog::backdrop {
  background: rgba(0,0,0,0.5);
}
.form-group {
  margin-bottom: 15px;
}
.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}
.form-group input[type="text"], 
.form-group input[type="date"], 
.form-group select {
  width: 100%;
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
}
.datetime-row {
  display: flex;
  gap: 10px;
  align-items: center;
}
.datetime-row input[type="date"] {
  flex: 2;
}
.time-select-group {
  display: flex;
  align-items: center;
  gap: 5px;
  flex: 3;
}
.time-select-group select {
  flex: 1;
  padding: 8px 4px;
}
.time-select-group span {
  font-weight: bold;
}
.dialog-buttons {
  display: flex;
  justify-content: space-between;
  margin-top: 20px;
}
.dialog-buttons button {
  padding: 8px 16px;
  cursor: pointer;
  border-radius: 4px;
  border: none;
}
#deleteBtn {
  background-color: #e74c3c;
  color: white;
  display: none;
}
#cancelBtn {
  background-color: #eee;
}
#saveBtn {
  background-color: #3788d8;
  color: white;
}
.right-buttons {
  display: flex;
  gap: 10px;
}
#userInfo {
  position: absolute;
  top: 5px;
  right: 20px;
  font-size: 12px;
  color: #666;
}