.calendar-nav-wrap {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
}
.calendar-nav {
    text-decoration: none;
    font-weight: bold;
    color: #0073aa;
}
.calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 10px;
    text-align: left;
    margin-top: 10px;
}
.calendar-header {
    font-weight: bold;
    text-align: center;
    background: #eee;
    padding: 5px;
}
.day {
    border: 1px solid #ccc;
    padding: 10px;
    min-height: 100px;
    background: #f9f9f9;
    position: relative;
}
.day.today {
    border: 2px solid #0073aa;
    background-color: #e6f4fa;
}
.product-title {
    font-size: 0.9em;
    margin-top: 5px;
    display: inline-block;
    position: relative;
}
.product-title a {
    color: #333;
    text-decoration: none;
}
.product-title:hover .product-preview {
    display: block;
}
.product-preview {
    display: none;
    position: absolute;
    top: 20px;
    left: 0;
    z-index: 10;
    background: #fff;
    border: 1px solid #ddd;
    padding: 5px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.product-preview img {
    width: 100px;
    height: auto;
}
.loading {
    opacity: 0.5;
}