:root{color-scheme:light dark;--bg: #f4f5f7;--surface: #ffffff;--text: #1a1c1f;--muted: #5a6069;--accent: #e5484d;--border: #e2e4e8;--shadow: rgba(0, 0, 0, .08);font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5}:root[data-theme=dark]{color-scheme:dark;--bg: #0e0f12;--surface: #191b1f;--text: #f2f3f5;--muted: #9aa0a8;--accent: #ff6369;--border: #2a2d33;--shadow: rgba(0, 0, 0, .5)}:root[data-theme=light]{color-scheme:light}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--bg: #0e0f12;--surface: #191b1f;--text: #f2f3f5;--muted: #9aa0a8;--accent: #ff6369;--border: #2a2d33;--shadow: rgba(0, 0, 0, .5)}}*{box-sizing:border-box}html,body{margin:0;padding:0;min-height:100vh}body{background-color:var(--bg);color:var(--text)}.app{display:flex;flex-direction:column;min-height:100vh}.app__header{width:100%;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:0 2px 8px var(--shadow)}.app__header-inner{max-width:960px;margin:0 auto;padding:1rem;display:flex;align-items:center;gap:.75rem}.app__title{margin:0;font-size:1.6rem;font-weight:700}.app__badge{font-size:.8rem;font-weight:600;letter-spacing:.04em;color:var(--accent)}.theme-toggle{margin-left:auto;display:inline-flex;align-items:center;justify-content:center;width:2.25rem;height:2.25rem;padding:0;font-size:1.1rem;line-height:1;background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:8px;cursor:pointer;transition:border-color .15s ease,background-color .15s ease}.theme-toggle:hover{border-color:var(--accent)}.theme-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.app__container{width:100%;max-width:960px;margin:0 auto;padding:1.5rem 1rem 2rem;display:flex;flex-direction:column;gap:1.5rem;flex:1}.app__main{flex:1}.player{position:relative;width:100%;aspect-ratio:16 / 9;background:#000;border:1px solid var(--border);border-radius:12px;overflow:hidden;box-shadow:0 8px 24px var(--shadow)}.player__video{width:100%;height:100%;display:block;object-fit:contain}.player__error{position:absolute;inset:auto 0 0;margin:0;padding:.75rem 1rem;background:var(--accent);color:#fff;text-align:center;font-size:.9rem}