.cosai-widget {
    position: fixed;
    right: 16px;
    bottom: 16px;
    z-index: 2147483647;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

.cosai-card {
    width: 320px;
    max-width: calc(100vw - 32px);
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    display: none;
}

.cosai-card.cosai-visible {
    display: block;
}

.cosai-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    background: rgba(0, 0, 0, 0.03);
}

.cosai-title {
    font-size: 13px;
    font-weight: 600;
    color: rgba(0, 0, 0, 0.72);
}

.cosai-close {
    border: none;
    background: transparent;
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    color: rgba(0, 0, 0, 0.55);
}

.cosai-body {
    padding: 12px;
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.cosai-message {
    font-size: 14px;
    color: rgba(0, 0, 0, 0.82);
    margin: 0;
    flex: 1;
}

.cosai-actions {
    padding: 0 12px 12px 12px;
    display: flex;
    gap: 8px;
}

.cosai-btn {
    appearance: none;
    border: 1px solid rgba(0, 0, 0, 0.16);
    border-radius: 10px;
    padding: 8px 10px;
    background: #fff;
    cursor: pointer;
    font-size: 13px;
}

.cosai-btn-primary {
    border-color: rgba(0, 0, 0, 0.18);
    background: rgba(0, 0, 0, 0.06);
}

.cosai-btn:focus,
.cosai-close:focus {
    outline: 2px solid rgba(0, 0, 0, 0.35);
    outline-offset: 2px;
}