.aisa-widget {
    max-width: 380px;
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
    font-family: inherit;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.aisa-header {
    background: #1a1a2e;
    color: #fff;
    padding: 12px 16px;
    font-weight: 600;
}
.aisa-messages {
    height: 320px;
    overflow-y: auto;
    padding: 12px;
    background: #fafafa;
}
.aisa-message {
    margin-bottom: 10px;
    padding: 8px 12px;
    border-radius: 12px;
    max-width: 85%;
    line-height: 1.4;
    font-size: 14px;
}
.aisa-message-user {
    background: #1a1a2e;
    color: #fff;
    margin-left: auto;
    border-bottom-right-radius: 2px;
}
.aisa-message-assistant {
    background: #fff;
    border: 1px solid #e2e2e2;
    margin-right: auto;
    border-bottom-left-radius: 2px;
}
.aisa-thinking { opacity: 0.5; }
.aisa-handoff { text-align: center; margin: 8px 0; }
.aisa-handoff-btn {
    background: #fff;
    border: 1px solid #1a1a2e;
    color: #1a1a2e;
    border-radius: 16px;
    padding: 6px 14px;
    font-size: 13px;
    cursor: pointer;
}
.aisa-input-row {
    display: flex;
    border-top: 1px solid #ddd;
}
.aisa-input-row input {
    flex: 1;
    border: none;
    padding: 10px 12px;
    font-size: 14px;
}
.aisa-input-row input:focus { outline: none; }
.aisa-input-row button {
    background: #1a1a2e;
    color: #fff;
    border: none;
    padding: 0 16px;
    cursor: pointer;
    font-size: 14px;
}