export const WEIXIN_STYLE_ID = 'xmanrui-dsh-im-weixin-settings';

const CSS = String.raw`
.dxw-page {
  --dxw-accent: #07c160;
  --dxw-accent-dark: #05994c;
  --dxw-success: var(--dsw-alias-state-success-primary, #20a162);
  --dxw-warning: var(--dsw-alias-state-warn-primary, #d97706);
  --dxw-error: var(--dsw-alias-state-error-primary, #d54941);
  width: 100%;
  max-width: 880px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 2px 0 28px;
  color: var(--dsw-alias-label-primary, #1f2329);
  box-sizing: border-box;
}
.dxw-page *, .dxw-page *::before, .dxw-page *::after { box-sizing: border-box; }
.dxw-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.dxw-heading h2, .dxw-heading p, .dxw-card h3, .dxw-card p { margin: 0; }
.dxw-eyebrow { color: var(--dsw-alias-label-tertiary, #8f959e); font-size: 12px; font-weight: 650; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 3px; }
.dxw-heading h2 { font-size: 20px; line-height: 28px; font-weight: 680; }
.dxw-heading p { color: var(--dsw-alias-label-secondary, #646a73); font-size: 13px; line-height: 20px; margin-top: 5px; white-space: nowrap; }
.dxw-tools, .dxw-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.dxw-tools { width: 100%; justify-content: space-between; flex-wrap: nowrap; }
.dxw-badge { display: inline-flex; align-items: center; gap: 7px; min-height: 30px; padding: 0 11px; border-radius: 999px; color: var(--dsw-alias-label-secondary, #646a73); background: var(--dsw-alias-bg-module-platform, #f2f3f5); font-size: 12px; white-space: nowrap; }
.dxw-dot { width: 8px; height: 8px; border-radius: 50%; background: #aeb3bb; flex: none; }
.dxw-dot[data-tone="success"] { background: var(--dxw-success); box-shadow: 0 0 0 3px color-mix(in srgb, var(--dxw-success) 14%, transparent); }
.dxw-dot[data-tone="warning"] { background: var(--dxw-warning); }
.dxw-dot[data-tone="error"] { background: var(--dxw-error); }
.dxw-button { min-height: 34px; border: 1px solid var(--dsw-alias-border-l2, #dfe1e5); border-radius: 8px; padding: 0 13px; display: inline-flex; align-items: center; justify-content: center; gap: 7px; color: var(--dsw-alias-label-primary, #1f2329); background: var(--dsw-alias-bg-layer-1, #fff); font: inherit; font-size: 13px; font-weight: 560; cursor: pointer; text-decoration: none; transition: border-color .15s ease, background .15s ease, transform .15s ease; }
.dxw-button:hover:not(:disabled) { border-color: #aeb3bb; background: var(--dsw-alias-interactive-bg-hover, #f7f8fa); }
.dxw-button:active:not(:disabled) { transform: translateY(1px); }
.dxw-button:focus-visible, .dxw-input:focus-visible { outline: 2px solid color-mix(in srgb, var(--dxw-accent) 70%, white); outline-offset: 2px; }
.dxw-button:disabled { cursor: not-allowed; opacity: .55; }
.dxw-button[data-kind="primary"] { color: white; border-color: var(--dxw-accent); background: var(--dxw-accent); }
.dxw-button[data-kind="primary"]:hover:not(:disabled) { border-color: var(--dxw-accent-dark); background: var(--dxw-accent-dark); }
.dxw-button[data-kind="danger"] { color: var(--dxw-error); }
.dxw-card { overflow: hidden; border: 1px solid var(--dsw-alias-border-l2, #e5e6eb); border-radius: 14px; background: var(--dsw-alias-bg-layer-1, #fff); box-shadow: 0 1px 2px rgb(31 35 41 / 3%); }
.dxw-cardBody { padding: 24px; }
.dxw-empty { min-height: 230px; display: grid; grid-template-columns: minmax(0, 1fr) 180px; align-items: center; gap: 30px; }
.dxw-empty h3 { font-size: 18px; margin-bottom: 8px; }
.dxw-empty p { max-width: 560px; color: var(--dsw-alias-label-secondary, #646a73); line-height: 1.65; }
.dxw-empty .dxw-actions { margin-top: 20px; }
.dxw-logo { width: 110px; height: 110px; display: grid; place-items: center; justify-self: center; border-radius: 28px; color: white; background: var(--dxw-accent); box-shadow: 0 18px 45px rgb(7 193 96 / 22%); }
.dxw-logo svg { width: 62px; height: 62px; }
.dxw-qrLayout { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 34px; align-items: center; }
.dxw-qrColumn { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.dxw-qrFrame { position: relative; width: 270px; aspect-ratio: 1; display: grid; place-items: center; overflow: hidden; padding: 10px; border: 1px solid var(--dsw-alias-border-l2, #e5e6eb); border-radius: 16px; background: white; }
.dxw-qrFrame img { display: block; width: 100%; height: 100%; object-fit: contain; }
.dxw-qrFallback { padding: 24px; text-align: center; color: #646a73; }
.dxw-expired { position: absolute; inset: 0; display: grid; place-items: center; padding: 30px; color: white; text-align: center; font-weight: 650; background: rgb(31 35 41 / 76%); backdrop-filter: blur(3px); }
.dxw-countdown { width: 270px; color: var(--dsw-alias-label-secondary, #646a73); font-size: 12px; }
.dxw-countdown div { display: flex; justify-content: space-between; margin-bottom: 6px; }
.dxw-progress { height: 4px; overflow: hidden; border-radius: 99px; background: #eef0f3; }
.dxw-progress span { display: block; width: var(--dxw-progress); height: 100%; background: var(--dxw-accent); transition: width .2s linear; }
.dxw-qrCopy h3 { margin: 9px 0 8px; font-size: 18px; }
.dxw-qrCopy > p { color: var(--dsw-alias-label-secondary, #646a73); line-height: 1.65; }
.dxw-steps { margin: 18px 0 22px; padding-left: 22px; color: var(--dsw-alias-label-secondary, #646a73); font-size: 13px; line-height: 1.9; }
.dxw-stateLabel { display: inline-flex; align-items: center; gap: 8px; color: var(--dsw-alias-label-secondary, #646a73); font-size: 12px; font-weight: 600; }
.dxw-verify { max-width: 560px; margin: 0 auto; padding: 32px; text-align: center; }
.dxw-verify h3 { margin: 8px 0; font-size: 19px; }
.dxw-verify p { color: var(--dsw-alias-label-secondary, #646a73); line-height: 1.6; }
.dxw-codeRow { display: flex; justify-content: center; gap: 10px; margin: 24px 0 10px; }
.dxw-input { width: 190px; height: 42px; padding: 0 14px; border: 1px solid var(--dsw-alias-border-l2, #dfe1e5); border-radius: 9px; background: var(--dsw-alias-bg-layer-1, white); color: inherit; font: inherit; font-size: 18px; letter-spacing: .16em; text-align: center; }
.dxw-statusNotice, .dxw-error { display: flex; align-items: center; gap: 10px; padding: 13px 15px; border: 1px solid color-mix(in srgb, var(--dxw-error) 28%, transparent); border-radius: 10px; color: var(--dxw-error); background: color-mix(in srgb, var(--dxw-error) 7%, transparent); font-size: 13px; }
.dxw-error { align-items: flex-start; flex-direction: column; padding: 22px; }
.dxw-error h3 { font-size: 17px; }
.dxw-errorCode { font-family: ui-monospace, SFMono-Regular, monospace; font-size: 11px; opacity: .8; }
.dxw-listHeading { display: flex; justify-content: space-between; align-items: center; margin: 2px 0 9px; }
.dxw-listHeading h3 { margin: 0; font-size: 14px; }
.dxw-list { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.dxw-accountTop { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.dxw-accountIdentity { display: flex; align-items: center; gap: 12px; min-width: 0; }
.dxw-avatar { width: 42px; height: 42px; display: grid; place-items: center; flex: none; border-radius: 12px; color: white; background: var(--dxw-accent); }
.dxw-accountIdentity h3 { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 15px; }
.dxw-accountIdentity p { color: var(--dsw-alias-label-secondary, #646a73); font: 12px ui-monospace, SFMono-Regular, monospace; margin-top: 4px; }
.dxw-health { display: inline-flex; align-items: center; gap: 7px; color: var(--dsw-alias-label-secondary, #646a73); font-size: 12px; white-space: nowrap; }
.dxw-accountFooter { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding-top: 16px; border-top: 1px solid var(--dsw-alias-border-l1, #eef0f3); }
.dxw-accountFooter .dxw-actions { flex: none; flex-wrap: nowrap; gap: 8px; margin-top: 0; }
.dxw-accountFooter .dxw-button { flex: none; white-space: nowrap; }
.dxw-summary { color: var(--dsw-alias-label-secondary, #646a73); font-size: 12px; }
.dxw-confirm { padding: 18px 24px; border-top: 1px solid color-mix(in srgb, var(--dxw-error) 25%, transparent); background: color-mix(in srgb, var(--dxw-error) 5%, transparent); }
.dxw-confirm strong { display: block; font-size: 14px; margin-bottom: 6px; }
.dxw-confirm p { color: var(--dsw-alias-label-secondary, #646a73); font-size: 12px; line-height: 1.55; }
.dxw-confirm .dxw-actions { margin-top: 13px; }
.dxw-loading { padding: 36px; color: var(--dsw-alias-label-secondary, #646a73); text-align: center; }
.dxw-spinner { width: 24px; height: 24px; margin: 0 auto 12px; border: 3px solid #e6e8eb; border-top-color: var(--dxw-accent); border-radius: 50%; animation: dxw-spin .8s linear infinite; }
.dxw-visuallyHidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
@keyframes dxw-spin { to { transform: rotate(360deg); } }
@media (max-width: 720px) {
  .dxw-heading, .dxw-accountTop { flex-direction: column; align-items: stretch; }
  .dxw-empty { grid-template-columns: minmax(0, 1fr); }
  .dxw-logo { display: none; }
  .dxw-qrLayout { grid-template-columns: minmax(0, 1fr); justify-items: center; }
  .dxw-qrCopy { width: 100%; }
  .dxw-cardBody { padding: 20px; }
}
@media (prefers-reduced-motion: reduce) {
  .dxw-page *, .dxw-page *::before, .dxw-page *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}
`;

export function installWeixinStyles() {
  if (typeof document === 'undefined') return () => {};
  const existing = document.querySelector(`style[data-plugin-css="${WEIXIN_STYLE_ID}"]`);
  if (existing) return () => {};
  const style = document.createElement('style');
  style.dataset.plugin = '@xmanrui/dsh-im';
  style.dataset.pluginCss = WEIXIN_STYLE_ID;
  style.textContent = CSS;
  document.head.appendChild(style);
  return () => style.remove();
}