.delivery-spec-datepicker {
    padding: 8px 40px 8px 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 14px;
    width: 200px;
    background-color: #ffffff;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.delivery-spec-datepicker-wrap {
    display: inline-block;
    position: relative;
}

div.method_box_ div.method_box_content_ .delivery-spec-datepicker-wrap .delivery-spec-datepicker {
    margin-top: 0;
}

.delivery-spec-cal-icon {
    width: 24px;
    height: 24px;
    cursor: pointer;
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
}

.delivery-spec-datepicker:focus {
    outline: none;
    border-color: #666;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
}

.delivery-spec-datepicker.error {
    border-color: #f44336;
    background-color: #ffebee;
}

.delivery-spec-datepicker[readonly] {
    cursor: pointer;
    background-color: #ffffff;
}

.ui-datepicker.delivery-spec-dp {
    z-index: 9999 !important;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.ui-datepicker.delivery-spec-dp table {
    border-spacing: 0;
    border-collapse: collapse;
}

.ui-datepicker.delivery-spec-dp td {
    padding: 0;
    border: none;
}

.ui-datepicker.delivery-spec-dp td a,
.ui-datepicker.delivery-spec-dp td span {
    display: block;
    margin: 0;
}

.ui-datepicker.delivery-spec-dp thead th:first-child {
    color: #e53935;
}

.ui-datepicker.delivery-spec-dp .available-date {
    background-color: #f5f5f5;
}

.ui-datepicker.delivery-spec-dp .available-date a {
    background-color: #f5f5f5;
    font-weight: bold;
    color: #333;
}

.ui-datepicker.delivery-spec-dp .available-date a:hover {
    background-color: #333 !important;
    color: white !important;
    font-weight: bold;
}

.ui-datepicker.delivery-spec-dp td.ui-datepicker-current-day a {
    background-color: #333 !important;
    color: white !important;
    font-weight: bold;
}

.ui-datepicker.delivery-spec-dp td.ui-datepicker-current-day a:hover {
    background-color: #555 !important;
    color: white !important;
}

.ui-datepicker.delivery-spec-dp td.ui-datepicker-unselectable {
    opacity: 0.3;
}

.ui-datepicker.delivery-spec-dp td.ui-datepicker-unselectable span {
    color: #bbb;
    cursor: not-allowed;
}

.ui-datepicker.delivery-spec-dp .ui-datepicker-header {
    background-color: #333;
    border-color: #333;
}

.ui-datepicker.delivery-spec-dp .ui-datepicker-title {
    color: white;
}

.ui-datepicker.delivery-spec-dp .ui-datepicker-prev,
.ui-datepicker.delivery-spec-dp .ui-datepicker-next {
    cursor: pointer;
}

.ui-datepicker.delivery-spec-dp .ui-datepicker-buttonpane button {
    cursor: pointer;
    padding: 5px 10px;
    font-size: 13px;
    background-color: #f5f5f5;
    border: 1px solid #ccc;
    color: #333;
}

.ui-datepicker.delivery-spec-dp .ui-datepicker-buttonpane button:hover {
    background-color: #e0e0e0;
    border-color: #999;
}

.ui-datepicker.delivery-spec-dp .ui-datepicker-buttonpane button:focus {
    outline: none;
    background-color: #e0e0e0;
}

@media screen and (max-width: 768px) {
    .delivery-spec-datepicker {
        width: 100%;
        max-width: 300px;
        font-size: 16px;
        padding: 10px 36px 10px 12px;
    }

    .delivery-spec-datepicker-wrap {
        width: 100%;
        max-width: 340px;
    }

    .delivery-spec-cal-icon {
        width: 20px;
        height: 20px;
    }

    .ui-datepicker.delivery-spec-dp {
        font-size: 16px;
        width: 320px !important;
    }

    .ui-datepicker.delivery-spec-dp .ui-datepicker-title {
        font-size: 17px;
    }

    .ui-datepicker.delivery-spec-dp .ui-datepicker-prev,
    .ui-datepicker.delivery-spec-dp .ui-datepicker-next {
        width: 36px;
        height: 36px;
        top: 50%;
        transform: translateY(-50%);
    }

    .ui-datepicker.delivery-spec-dp thead th {
        padding: 6px 0;
        font-size: 14px;
    }

    .ui-datepicker.delivery-spec-dp td a,
    .ui-datepicker.delivery-spec-dp td span {
        padding: 8px 4px;
        text-align: center;
        font-size: 15px;
    }

    .ui-datepicker.delivery-spec-dp .ui-datepicker-buttonpane button {
        padding: 10px 18px;
        font-size: 15px;
    }
}