.theme-control{display:flex;align-items:center;gap:6px;color:var(--text-secondary);font-size:12px;white-space:nowrap}.theme-control select{font:inherit;color:var(--text);background:var(--surface);border:1px solid var(--border-strong);border-radius:6px;padding:6px;min-height:36px}.theme-control select:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.search-open,.lesson-nav .search-open{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:10px 12px;border:0;border-radius:6px;background:transparent;color:var(--text-secondary);font-size:13px}.search-open svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round}.search-open:hover,.lesson-nav .search-open:hover{color:var(--accent);background:var(--accent-surface)}body:has(.lesson-nav) header .search-open{display:none}.search-dialog{width:min(620px,calc(100% - 32px));max-height:calc(92dvh - 16px);margin:8dvh auto auto;padding:24px;border:1px solid var(--border-strong);border-radius:16px;background:var(--surface);color:var(--text);box-shadow:0 16px 48px var(--shadow);font-size:15px;line-height:1.5;overscroll-behavior:contain}.search-dialog::backdrop{background:var(--backdrop)}.search-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px}.search-heading h2{font-family:Manrope,sans-serif;font-size:24px;margin:0}.search-close{min-height:44px;border:0;padding:8px;background:transparent;text-decoration:underline}.search-dialog label{display:block;margin-bottom:6px}.search-dialog input{width:100%;min-width:0;padding:12px;border:1px solid var(--border-strong);border-radius:6px;background:var(--page);color:var(--text);font-size:16px}.search-dialog input::placeholder{color:var(--text-secondary)}.search-status{font-size:13px;color:var(--text-secondary);margin:12px 0}#search-results{list-style:none;margin:0;padding:0}#search-results li+li{border-top:1px solid var(--border)}#search-results a{display:block;padding:12px 8px;color:var(--text);border-radius:6px;text-decoration:none}#search-results a:hover,#search-results a:focus-visible{background:var(--accent-surface)}#search-results strong,.search-result-type{display:block}.search-result-type{color:var(--text-secondary);font-size:12px;margin-bottom:2px}#search-results p{color:var(--text-secondary);font-size:13px;margin:4px 0 0}@media(max-width:760px){.search-dialog{width:calc(100% - 16px);max-height:calc(100dvh - 16px);margin-top:8px;padding:16px;border-radius:12px}}