/* 本功能只影响辩题入口和导入弹层，日夜模式独立可读。 */
.ti-root {
  --ti-bg: var(--bg-card, #fffdf8);
  --ti-fg: var(--text-primary, #302c25);
  --ti-muted: var(--text-secondary, #665e53);
  --ti-line: var(--border-color, #d7cdbd);
  --ti-subtle: var(--bg-secondary, #f5f0e6);
  --ti-brand: rgb(var(--color-primary-500, 146 59 52));
  --ti-brand-fg: #fffdf8;
  --ti-error: #a02c25;
  color: var(--ti-fg);
  font-family: inherit;
  font-size: 14px;
  line-height: 1.65;
}
html.dark .ti-root, html[data-ft-mode="ink"] .ti-root {
  --ti-bg: var(--bg-card, #17191d);
  --ti-fg: var(--text-primary, #f2eee5);
  --ti-muted: var(--text-secondary, #bdb5a7);
  --ti-line: var(--border-color, #49443d);
  --ti-subtle: var(--bg-secondary, #24262a);
  --ti-brand: #dfa397;
  --ti-brand-fg: #2e1916;
  --ti-error: #ffb5a9;
}
.ti-root *, .ti-root *::before, .ti-root *::after { box-sizing: border-box; }
.ti-root [hidden] { display: none !important; }
.ti-root button, .ti-root input, .ti-root select, .ti-root textarea { font: inherit; }
.ti-root button { cursor: pointer; }
.ti-root button:disabled, .ti-root input:disabled, .ti-root select:disabled, .ti-root textarea:disabled { opacity: .55; cursor: not-allowed; }
.ti-root :focus-visible { outline: 3px solid var(--ti-brand); outline-offset: 3px; }
.ti-button {
  min-height: 44px;
  padding: 9px 15px;
  border: 1px solid var(--ti-line);
  border-radius: 8px;
  background: var(--ti-bg);
  color: var(--ti-fg);
  font-weight: 600 !important;
}
.ti-button:hover { background: var(--ti-subtle); }
.ti-primary, .ti-primary:hover { border-color: var(--ti-brand); background: var(--ti-brand); color: var(--ti-brand-fg); }
.ti-primary:hover { filter: brightness(1.06); }
app-admin-topics-tab [data-topic-import-header] { gap: 16px; }
app-admin-topics-tab [data-topic-import-actions] { flex-wrap: wrap; gap: 8px; }
app-admin-topics-tab [data-topic-import-actions] > button { min-height: 44px; }
body:has(.ti-dialog[open]) { overflow: hidden; }
.ti-dialog {
  width: min(820px, calc(100vw - 32px));
  max-width: none;
  max-height: min(90dvh, 940px);
  margin: auto;
  padding: 0;
  border: 1px solid var(--ti-line);
  border-radius: 14px;
  background: var(--ti-bg);
  color: var(--ti-fg);
  box-shadow: 0 28px 90px #0007;
  overflow: auto;
  overscroll-behavior: contain;
}
.ti-dialog::backdrop { background: #090b12b3; }
.ti-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; padding: 24px 24px 18px; border-bottom: 1px solid var(--ti-line); }
.ti-heading > div { min-width: 0; }
.ti-heading h2 { margin: 3px 0 7px; font-size: 24px; font-weight: 700; line-height: 1.4; }
.ti-eyebrow { margin: 0; color: var(--ti-brand); font-size: 12px; letter-spacing: .08em; font-weight: 600; }
.ti-muted { color: var(--ti-muted); font-size: 12px; line-height: 1.7; margin: 4px 0; overflow-wrap: anywhere; }
.ti-close { flex: 0 0 44px; width: 44px; height: 44px; border: 1px solid var(--ti-line); border-radius: 8px; color: var(--ti-fg); background: var(--ti-subtle); font-size: 26px !important; line-height: 1; }
.ti-body { padding: 20px 24px 24px; min-width: 0; }
.ti-toolbar { display: flex; align-items: flex-end; gap: 16px; flex-wrap: wrap; }
.ti-toolbar > label { flex: 1 1 260px; min-width: 0; }
.ti-label { display: grid; gap: 6px; font-size: 13px; font-weight: 600; min-width: 0; }
.ti-label > input, .ti-label > select, .ti-label > textarea { width: 100%; min-width: 0; min-height: 44px; padding: 10px 12px; border: 1px solid var(--ti-line); border-radius: 8px; background: var(--ti-bg); color: var(--ti-fg); font-weight: 400; }
.ti-label > input[type="file"] { padding: 8px; font-size: 12px; }
.ti-label > input[type="file"]::file-selector-button { min-height: 28px; padding: 3px 9px; border: 1px solid var(--ti-line); border-radius: 5px; background: var(--ti-subtle); color: var(--ti-fg); cursor: pointer; }
.ti-label > textarea { resize: vertical; line-height: 1.65; max-height: 45dvh; }
.ti-label > textarea::placeholder { color: var(--ti-muted); opacity: 1; }
.ti-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 12px; margin-top: 18px; }
.ti-content-label { margin-top: 18px; }
.ti-help { border: 1px solid var(--ti-line); padding: 10px 12px; margin-top: 14px; border-radius: 8px; background: var(--ti-subtle); font-size: 12px; }
.ti-help summary { min-height: 24px; color: var(--ti-fg); cursor: pointer; font-weight: 600; }
.ti-help p { color: var(--ti-muted); margin: 10px 0 0; overflow-wrap: anywhere; }
.ti-body h3 { font-size: 16px; font-weight: 700; margin: 18px 0 8px; }
.ti-preview-list { list-style: none; padding: 0; margin: 12px 0 0; max-height: 360px; overflow-y: auto; overscroll-behavior: contain; border: 1px solid var(--ti-line); border-radius: 8px; }
.ti-preview-row { display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 12px; padding: 12px; border-bottom: 1px solid var(--ti-line); }
.ti-preview-row:last-child { border-bottom: 0; }
.ti-row-content { min-width: 0; overflow-wrap: anywhere; }
.ti-row-content strong { display: block; font-size: 13px; white-space: pre-wrap; }
.ti-row-number { font-size: 11px; color: var(--ti-muted); white-space: nowrap; }
.ti-description { color: var(--ti-muted); font-size: 12px; white-space: pre-wrap; margin: 6px 0 0; }
.ti-duplicate { background: var(--ti-subtle); }
.ti-invalid .ti-row-number { color: var(--ti-error); }
.ti-confirm { margin-top: 18px; padding: 16px; background: var(--ti-subtle); border: 1px solid var(--ti-brand); border-radius: 10px; }
.ti-confirm h3 { margin-top: 0; }
.ti-confirm > p { margin: 8px 0 14px; }
.ti-reason-length { text-align: right; margin: 4px 0 0 !important; }
.ti-message { margin-top: 16px; padding: 12px; border: 1px solid var(--ti-line); border-radius: 8px; background: var(--ti-subtle); font-size: 13px; overflow-wrap: anywhere; }
.ti-error { border-color: var(--ti-error); color: var(--ti-error); }
.ti-errors { max-height: 220px; overflow-y: auto; margin: 10px 0 0; padding-left: 22px; color: var(--ti-error); font-size: 12px; overflow-wrap: anywhere; }
.ti-errors li { margin-top: 6px; }
.ti-footer { position: sticky; bottom: 0; display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-end; padding: 16px 24px max(16px, env(safe-area-inset-bottom)); border-top: 1px solid var(--ti-line); background: var(--ti-bg); }
.ti-receipt { padding: 16px; border: 1px solid var(--ti-line); border-radius: 10px; background: var(--ti-subtle); overflow-wrap: anywhere; }
.ti-receipt > .ti-button { margin-top: 12px; }
.ti-skipped { margin-top: 10px; font-size: 12px; }
.ti-skipped summary { min-height: 32px; cursor: pointer; }
.ti-skipped ol { max-height: 220px; overflow-y: auto; padding-left: 20px; }
@media (max-width: 600px) {
  app-admin-topics-tab [data-topic-import-header] { flex-wrap: wrap; align-items: flex-start; }
  app-admin-topics-tab [data-topic-import-header] > h3 { width: 100%; }
  app-admin-topics-tab [data-topic-import-actions] { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; }
  app-admin-topics-tab [data-topic-import-actions] > button { min-width: 0; padding: 9px 8px; font-size: 13px; }
  .ti-dialog { width: calc(100vw - 24px); max-height: 92dvh; border-radius: 11px; }
  .ti-heading { gap: 12px; padding: 18px 16px 14px; }
  .ti-heading h2 { font-size: 21px; }
  .ti-body { padding: 16px; }
  .ti-toolbar { gap: 10px; }
  .ti-toolbar > label, .ti-toolbar > button { flex: 1 1 100%; }
  .ti-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .ti-grid > label:first-child { grid-column: 1 / -1; }
  .ti-preview-row { grid-template-columns: 48px minmax(0, 1fr); gap: 8px; padding: 10px; }
  .ti-confirm { padding: 12px; }
  .ti-footer { padding: 12px 16px max(12px, env(safe-area-inset-bottom)); gap: 8px; }
  .ti-footer > button { flex: 1 1 auto; padding: 9px 11px; font-size: 13px; }
  .ti-footer > [data-ti-primary] { flex-basis: 100%; }
}
@media (prefers-reduced-motion: reduce) { .ti-primary:hover { filter: none; } }