.presentation{width:min(1100px,calc(100% - 24px));height:min(940px,calc(100dvh - 24px));max-width:none;max-height:none;padding:0;border:1px solid var(--line);border-radius:12px;color:var(--fg);background:var(--surface);overflow:hidden}
.presentation[open]{display:flex;flex-direction:column}
.presentation-view{display:flex;flex-direction:column;flex:1;min-height:0;width:100%;height:100%;color:var(--fg);background:var(--surface)}
.presentation::backdrop{background:#141318d9}
.presentation-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line)}
.presentation-heading h2{font-size:19px;color:var(--accent)}
.presentation-actions{display:flex;gap:8px}
.presentation button,.presentation select{min-height:44px;font-size:14px}
.presentation button{white-space:nowrap}
.presentation-stage{position:relative;flex:1;min-height:0;background:#242326}
.presentation-stage img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}
.presentation-stage p{position:absolute;inset:0;display:grid;place-content:center;padding:24px;color:#fff;text-align:center}
.presentation-controls{display:flex;align-items:center;justify-content:center;gap:10px;padding:12px 16px 8px}
.presentation-select{display:flex;align-items:center;gap:8px;min-width:0;font-size:13px;color:var(--muted)}
.presentation-select select{font:inherit;color:var(--fg);background:#fff;border:1px solid var(--line);border-radius:8px;padding:8px;max-width:320px;min-width:0}
.presentation select:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.presentation-footer{display:flex;justify-content:space-between;gap:8px;padding:0 16px 8px;font-size:12px;color:var(--muted)}
.presentation-transcript{font-size:13px;border-top:1px solid var(--line);padding:0 16px;overflow:auto;max-height:25vh;flex-shrink:0}
.presentation-transcript summary{padding:10px 0;min-height:40px}.presentation-transcript p{margin:8px 0}
.presentation-view:fullscreen,.presentation.presentation-expanded{width:100%;height:100dvh;max-width:none;max-height:none;margin:0;padding:0;border:0;border-radius:0}
.presentation-fullscreen-note{margin:0;padding:8px 16px;background:var(--surface);color:var(--muted);font-size:13px}
@media(max-width:650px){.presentation-heading{flex-wrap:wrap;padding:10px 12px;gap:8px}.presentation-heading h2{font-size:17px}.presentation-actions{margin-left:auto}.presentation button{padding:8px 12px}.presentation-controls{display:grid;grid-template-columns:1fr 1fr 1fr;padding:10px 12px 8px;gap:8px}.presentation-select{grid-row:1;grid-column:1/-1}.presentation-select select{flex:1;max-width:none;width:100%}.presentation-footer{padding:0 12px 8px;display:block}.presentation-footer p+p{margin-top:3px}.presentation-transcript{padding:0 12px}}
@media(prefers-reduced-motion:reduce){.presentation{scroll-behavior:auto}}