/* Общая страница настроек для обоих вариантов оформления. */
.settings { max-width: 780px; }
.settings-intro { margin: 0 0 24px; max-width: 60ch; }
.settings-form { display: grid; gap: 28px; }
.settings-form fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.settings-form legend { font-size: 18px; font-weight: 600; padding: 0; margin-bottom: 12px; }
.setting-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.setting-card { display: flex; flex-direction: column; gap: 12px; padding: 18px; border: 1px solid var(--line-strong); border-radius: var(--r); background: var(--surface); cursor: pointer; }
.setting-card:hover { background: var(--hover); }
.setting-card:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.setting-card:focus-within { outline: 2px solid var(--accent); outline-offset: 3px; }
.setting-choice { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.setting-choice input { width: 18px; height: 18px; margin: 0; flex-shrink: 0; accent-color: var(--accent); }
.setting-description, .setting-hint { font-size: var(--fs-sm); color: var(--muted); line-height: 1.6; }
.setting-hint { margin: 12px 0 0; }
.settings-form > .btn { justify-self: start; }
.settings-saved { padding: 12px 16px; border: 1px solid var(--useful); border-radius: var(--r-sm); background: var(--useful-soft); color: var(--useful); }
.design-preview { display: grid; gap: 8px; padding: 16px; height: 110px; background: #f4f6f7; border: 1px solid #d7e0e5; border-radius: 10px; }
.design-preview i { display: block; height: 18px; border: 1px solid #cdd7dc; background: #fff; }
.design-preview i:nth-child(2) { width: 80%; }
.design-preview i:last-child { width: 60%; }
.preview-modern i { border-radius: 999px; }
.preview-modern i:first-child { border-left: 4px solid #c53d00; }
.preview-notebook { border-radius: 3px; border-left: 2px solid #df9a9a; background: #f2f3ef; }
.preview-notebook i { border-radius: 2px; border-color: #c7cbc6; background: #fbfbf8; }
.preview-notebook i:first-child { border-left: 4px solid #4a3aa6; }
@media (max-width: 540px) {
  .setting-options { grid-template-columns: minmax(0, 1fr); }
  .setting-card { padding: 16px; }
  .design-preview { height: 96px; }
}