body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans TC', sans-serif;
    background-color: #f4f7f6;
    margin: 0;
    padding: 20px;
    color: #333;
}
.container {
    max-width: 700px;
    margin: 0 auto;
    background-color: #fff;
    padding: 20px 30px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}
h1, h2 {
    text-align: center;
    color: #2c3e50;
}
h1 { margin-bottom: 5px; }
h2 {
    margin-top: 0;
    font-weight: 400;
    color: #7f8c8d;
    margin-bottom: 30px;
}
.info-box {
    background-color: #ecf0f1;
    border-radius: 5px;
    padding: 15px;
    margin-bottom: 25px;
    border-left: 5px solid #3498db;
}
.info-box h3 { margin-top: 0; }
.form-group { margin-bottom: 20px; }
label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 16px;
}
input[type="text"], input[type="datetime-local"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 16px;
}
input[type="file"] { width: 100%; font-size: 14px; }
.time-slots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 10px;
}
.time-slot-item {
    display: flex;
    align-items: center;
    padding: 5px;
    border-radius: 4px;
    transition: background-color 0.2s;
}
.time-slot-item:hover {
    background-color: #f0f0f0;
}
.time-slot-item input {
    margin-right: 8px;
}
button[type="submit"] {
    width: 100%;
    padding: 12px;
    background-color: #2ecc71;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 18px;
    font-weight: 600;
    transition: background-color 0.3s;
}
button[type="submit"]:hover { background-color: #27ae60; }
.highlight { color: #e74c3c; font-weight: bold; }