.esp-wa-chat-button {
    position: fixed;
    z-index: 9999;
    bottom: 20px;
    background-color: #25D366;
    color: white;
    border-radius: 50px;
    display: flex;
    align-items: center;
    text-decoration: none;
    font-family: sans-serif;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.esp-wa-chat-button a {
    display: flex;
    align-items: center;
    padding: 10px 15px;
    color: white;
    text-decoration: none;
}

.esp-wa-right { right: 20px; }
.esp-wa-left  { left: 20px; }

.esp-wa-small { font-size: 12px; }
.esp-wa-medium { font-size: 16px; }
.esp-wa-large { font-size: 20px; }

.esp-wa-icons label img {
    width: 40px;
    height: 40px;
    background-color: #f0f0f0;
    border: 1px solid #ccc;
    border-radius: 6px;
    padding: 4px;
    box-sizing: content-box;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.esp-wa-icons input[type="radio"]:checked + img {
    border: 2px solid #25D366;
    box-shadow: 0 0 8px rgba(37, 211, 102, 0.7);
    background-color: #fff;
}