body{font-family:sans-serif;line-height:1.6;margin:20px;background-color:#f4f7f6;}
.container{max-width:700px;margin:20px auto;padding:25px;border:1px solid #ddd;border-radius:10px;box-shadow:0 4px 8px rgba(0,0,0,0.1);background-color:white;}
h2{text-align:center;color:#333;margin-bottom:25px;}
.input-group{display:flex;flex-wrap:wrap;gap:15px;margin-bottom:18px;}
.input-group > div{flex:1;min-width:200px;}
label{display:block;margin-bottom:6px;font-weight:bold;color:#555;}
input[type="date"],input[type="time"],select{width:100%;padding:12px;border:1px solid #ccc;border-radius:5px;font-size:1rem;box-sizing:border-box;transition:border-color 0.3s ease;}
input[type="date"]:focus,input[type="time"]:focus,select:focus{border-color:#007bff;outline:none;}
.checkbox-group label {display:inline-block; margin-left:5px; font-weight:normal;}
.checkbox-group input[type="checkbox"] {width:auto; vertical-align:middle;}
button{display:block;width:100%;padding:12px;margin-top:10px;background-color:#007bff;color:white;border:none;border-radius:5px;font-size:1.1rem;cursor:pointer;transition:background-color 0.3s ease;}
button:hover{background-color:#0056b3;}
#resultTableContainer{margin-top:25px;}
#resultTable{width:100%;border-collapse:collapse;margin-top:10px;}
#resultTable th, #resultTable td{border:1px solid #ddd;padding:10px;text-align:left;word-break:break-word;}
#resultTable th{background-color:#e9f7ef;color:#2e7d32;font-weight:bold;}
#resultTable td{background-color:#fff;}
.error{color:#d32f2f;margin-top:12px;font-weight:bold;padding:10px;background-color:#ffebee;border:1px solid #ffcdd2;border-radius:5px;}
.highlight {background-color: #fff9c4 !important;}
.explanation{margin-top:20px;padding:15px;background-color:#eef;border-left:5px solid #55a;font-size:0.9rem;line-height:1.5;}
.explanation h3{margin-top:0;margin-bottom:10px;color:#336;}
.explanation ul {padding-left: 20px; margin-top: 5px; margin-bottom: 10px;}
.explanation li { margin-bottom: 5px; }
.copy-icon {
  cursor: pointer;
  color: #007bff;
  margin-left: 5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease;
}
.copy-icon svg {
  width: 20px;
  height: 20px;
  vertical-align: middle;
}
.copy-icon:hover {
  color: #0056b3;
}
.copy-success {
  color: #28a745;
}
.action-cell {
  text-align: center !important;
  width: 50px;
  vertical-align: middle;
}