.kefu-callback-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
}
.kefu-callback-modal {
    width: 88%;
    max-width: 360px;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    animation: kefuCallbackIn 0.25s ease;
}
@keyframes kefuCallbackIn {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}
.kefu-callback-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    background: #1a73e8;
    color: #fff;
    font-size: 16px;
    font-weight: 600;
}
.kefu-callback-close {
    color: #fff;
    font-size: 22px;
    line-height: 1;
    text-decoration: none;
}
.kefu-callback-body {
    padding: 16px;
}
.kefu-callback-tip {
    display: flex;
    gap: 8px;
    align-items: flex-start;
    background: #fffbeb;
    border: 1px solid #fde68a;
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 14px;
    font-size: 13px;
    color: #92400e;
    line-height: 1.5;
}
.kefu-callback-tip svg {
    flex-shrink: 0;
    margin-top: 1px;
}
.kefu-callback-field {
    margin-bottom: 12px;
}
.kefu-callback-field label {
    display: block;
    font-size: 14px;
    color: #333;
    margin-bottom: 4px;
    font-weight: 500;
}
.kefu-callback-field label em {
    color: #e53e3e;
    font-style: normal;
}
.kefu-callback-field input,
.kefu-callback-field textarea {
    width: 100%;
    box-sizing: border-box;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 14px;
    outline: none;
    appearance: none;
}
.kefu-callback-field input:focus,
.kefu-callback-field textarea:focus {
    border-color: #1a73e8;
    box-shadow: 0 0 0 2px rgba(26,115,232,0.15);
}
.kefu-callback-field textarea {
    resize: none;
}
.kefu-callback-submit {
    width: 100%;
    padding: 12px;
    background: #1a73e8;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 4px;
}
.kefu-callback-submit:active {
    background: #1558b0;
}
.kefu-callback-submit:disabled {
    background: #93c5fd;
    cursor: not-allowed;
}
.kefu-callback-phone {
    text-align: center;
    margin-top: 14px;
    font-size: 13px;
    color: #6b7280;
}
.kefu-callback-phone a {
    color: #1a73e8;
    font-weight: 600;
    text-decoration: none;
}
.kefu-callback-success {
    text-align: center;
    padding: 20px 0;
}
.kefu-callback-success-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    background: #10b981;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.kefu-callback-success-icon svg {
    stroke: #fff;
}
.kefu-callback-success h3 {
    font-size: 16px;
    color: #333;
    margin: 0 0 8px;
}
.kefu-callback-success p {
    font-size: 13px;
    color: #6b7280;
    margin: 0;
    line-height: 1.5;
}