#envelope-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
}

.envelope {
    width: 70px;
    height: 50px;
    background-color: white;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    cursor: pointer;
    position: relative;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.2s ease;
}

.envelope:hover {
    transform: scale(1.05);
}

.envelope::before {
    content: '✉️';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 30px;
}

.envelope-popup {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 320px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    padding: 20px;
    display: none;
    opacity: 0;
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
}

.envelope-popup.show {
    display: block;
    opacity: 1;
}

.envelope-popup h3 {
    margin-top: 0;
    color: #333;
    font-size: 18px;
}

.envelope-popup p {
    color: #666;
    line-height: 1.4;
    font-size: 16px;
}

.close-popup {
    position: absolute;
    top: 5px;
    right: 10px;
    cursor: pointer;
    font-size: 30px;
    color: #999;
    line-height: 1;
}

.close-popup:hover {
    color: #333;
}