When a tape is loaded, the browser transforms into a cinema-style player: the video fills most of the screen (largest 16:9 rect that fits), wrapped in a black letterbox background with a film-border frame. The title + progress bar + time labels sit in a chrome band at the bottom; list view is hidden while playback is active. Controls in theatre mode: - Space / Enter: pause / resume - Escape: stop + unload (returns to list) - Escape again (from list): exit to prompt prepareVideo now requests 480x270 @ 24fps instead of the previous 120x68 @ 12fps thumbnail, so playback actually looks like playback rather than a postage stamp. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>