.wa-floating-btn {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    cursor: pointer;
    z-index: 9998;
    border: none;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.wa-floating-btn:hover {
    transform: scale(1.1);
}
.wa-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.wa-modal.is-open {
    opacity: 1;
    pointer-events: auto;
}
.wa-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(3px);
}
.wa-modal-content {
    position: relative;
    background: #ffffff;
    border-radius: 16px;
    width: 90%;
    max-width: 350px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    overflow: hidden;
    transform: translateY(30px) scale(0.95);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    font-family: system-ui, -apple-system, sans-serif;
}
.wa-modal.is-open .wa-modal-content {
    transform: translateY(0) scale(1);
}
.wa-modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    background: transparent;
    border: none;
    font-size: 28px;
    line-height: 1;
    color: #999;
    cursor: pointer;
    z-index: 10;
    transition: color 0.2s;
}
.wa-modal-close:hover {
    color: #333;
}
.wa-modal-header {
    background-color: #f0f2f5;
    padding: 30px 20px 20px;
    text-align: center;
    border-bottom: 1px solid #e9e9e9;
}
.wa-modal-header h3 {
    margin: 15px 0 0;
    font-size: 18px;
    color: #1c1e21;
    font-weight: 600;
}
.wa-modal-body {
    padding: 24px;
    text-align: center;
}
.wa-modal-body p {
    color: #606770;
    font-size: 15px;
    line-height: 1.5;
    margin: 0 0 24px;
}
.wa-btn {
    display: inline-block;
    background-color: #25D366;
    color: #fff;
    text-decoration: none;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 15px;
    transition: background-color 0.2s ease, transform 0.2s ease;
}
.wa-btn:hover {
    background-color: #1ebe57;
    color: #fff;
    transform: translateY(-2px);
}