/* 我的头像面板（v23）：与 usage.css 同一套 token 与交互约定 */
button.avatar {
  border: none;
  padding: 0;
  font-family: inherit;
  cursor: pointer;
  overflow: hidden;
  transition: box-shadow .18s ease, transform .18s ease;
}
button.avatar:hover { transform: translateY(-1px); box-shadow: 0 2px 10px -2px rgba(0, 0, 0, .3); }
button.avatar:focus-visible, .avatar-dialog :focus-visible {
  outline: 2px solid var(--seed-accent, #5e6ad2);
  outline-offset: 3px;
}
button.avatar .avatar-img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; display: block; }

.avatar-dialog {
  box-sizing: border-box;
  position: fixed;
  inset: 0;
  margin: auto;
  padding: 0;
  width: min(420px, calc(100% - 32px));
  max-width: none;
  max-height: 90vh;
  max-height: 90dvh;
  border: 1px solid var(--seed-border, #d9dde5);
  border-radius: 14px;
  background: var(--seed-elevated, #fff);
  color: var(--seed-fg, #1a1d23);
  box-shadow: 0 24px 80px rgba(0, 0, 0, .24);
  font: 14px/1.6 -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  overflow: auto;
  overscroll-behavior: contain;
}
.avatar-dialog:not([open]) { display: none; }
.avatar-dialog[open] { display: block; }
.avatar-dialog::backdrop { background: rgba(12, 16, 26, .5); }
.avatar-dialog * { box-sizing: border-box; }
.avatar-dialog h2, .avatar-dialog p { margin: 0; }
.avatar-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--seed-border, #d9dde5);
}
.avatar-dialog h2 { font-size: 18px; font-weight: 600; }
.avatar-dialog .avatar-muted { color: var(--seed-fg-muted, #6b7280); font-size: 12px; }
.avatar-body { display: flex; align-items: center; gap: 18px; padding: 18px 20px 0; flex-wrap: wrap; }
.avatar-preview {
  width: 96px; height: 96px; border-radius: 50%; flex: none;
  display: flex; align-items: center; justify-content: center;
  background: var(--seed-accent-bg, #f1f2fc); color: var(--seed-accent, #5e6ad2);
  border: 1px solid var(--seed-border, #d9dde5);
  font-size: 34px; font-weight: 600; overflow: hidden;
}
.avatar-preview-img { width: 100%; height: 100%; object-fit: cover; display: none; }
.avatar-form { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; min-width: 190px; }
.avatar-file-label { font-size: 12px; color: var(--seed-fg-muted, #6b7280); }
.avatar-file { font: inherit; font-size: 12px; color: var(--seed-fg-secondary, #4a5060); max-width: 100%; }
.avatar-button {
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--seed-border, #d9dde5);
  border-radius: 7px;
  background: var(--seed-elevated, #fff);
  color: var(--seed-fg-secondary, #4a5060);
  font: inherit; font-size: 13px; line-height: 1.4;
  padding: 6px 12px; cursor: pointer; white-space: nowrap;
}
.avatar-button:hover:not(:disabled) { background: var(--seed-hover, #f0f2f6); }
.avatar-button:disabled { opacity: .5; cursor: not-allowed; }
.avatar-button.avatar-primary {
  background: var(--seed-accent, #5e6ad2);
  border-color: var(--seed-accent, #5e6ad2);
  color: #fff; font-weight: 600;
}
.avatar-button.avatar-primary:hover:not(:disabled) { filter: brightness(1.06); }
.avatar-dialog .avatar-status { padding: 12px 20px 2px; color: var(--seed-fg-muted, #6b7280); font-size: 12px; }
.avatar-dialog .avatar-error { color: var(--seed-danger, #b42318); }
.avatar-dialog .avatar-ok { color: var(--seed-success, #067647); }
.avatar-dialog .avatar-form .avatar-muted { margin-top: 2px; }
.avatar-dialog .avatar-body + .avatar-status { padding-bottom: 18px; }
@media (max-width: 420px) {
  .avatar-dialog { width: calc(100% - 16px); max-height: calc(100dvh - 16px); border-radius: 10px; }
  .avatar-header, .avatar-body { padding-left: 16px; padding-right: 16px; }
  .avatar-dialog .avatar-status { padding-left: 16px; padding-right: 16px; }
}