:root{--bg-primary: #121212;--bg-secondary: #1e1e1e;--text-primary: #ffffff;--text-secondary: #aaaaaa;--accent: #00adef;--border-color: #333}body{margin:0;font-family:Inter,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);height:100vh;overflow:hidden}#root{height:100%}.app-container{display:flex;height:100%}.video-section{flex:2;display:flex;flex-direction:column;justify-content:center;background:#000;position:relative}.video-player{width:100%;aspect-ratio:16/9;display:block;border-radius:12px}.player-wrapper{position:relative;width:100%;max-width:1000px;margin:0 auto;padding:1rem;box-sizing:border-box;display:flex;flex-direction:column;align-items:center}.custom-controls{margin-top:1rem;width:100%;background:#1e1e1e;border-radius:12px;padding:.75rem 1.5rem;display:flex;align-items:center;gap:1rem;box-shadow:0 4px 12px #0000004d;box-sizing:border-box}.control-btn{background:none;border:none;color:#fff;font-size:1.2rem;cursor:pointer;padding:0;margin:0;display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;transition:background .2s}.control-btn:hover{background:#ffffff1a;opacity:1}.time-display-control{font-family:monospace;font-size:.85rem;color:#aaa;min-width:100px;text-align:center}.seek-bar{flex:1;-webkit-appearance:none;background:transparent;cursor:pointer;height:4px}.seek-bar::-webkit-slider-runnable-track{width:100%;height:4px;background:#444;border-radius:2px}.seek-bar::-webkit-slider-thumb{-webkit-appearance:none;height:14px;width:14px;border-radius:50%;background:#fff;margin-top:-5px;box-shadow:0 0 5px #00000080;transition:transform .1s}.seek-bar:hover::-webkit-slider-thumb{transform:scale(1.2)}.play-overlay{position:absolute;inset:0 0 80px;display:flex;align-items:center;justify-content:center;cursor:pointer}.play-circle{width:64px;height:64px;background:#1e1e1ecc;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2rem;color:#fff;box-shadow:0 4px 20px #0006;transition:transform .2s,background .2s}.play-overlay:hover .play-circle{transform:scale(1.1);background:#1e1e1ef2}.comments-section{flex:1;min-width:400px;background-color:var(--bg-secondary);border-left:1px solid var(--border-color);display:flex;flex-direction:column}.comments-header{padding:1rem;border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center}.split-view{display:flex;flex:1;overflow:hidden}.comment-column{flex:1;display:flex;flex-direction:column;border-right:1px solid var(--border-color)}.comment-column:last-child{border-right:none}.col-header{padding:.5rem;text-align:center;font-weight:700;font-size:.9rem;background:#252525;border-bottom:1px solid var(--border-color)}.comment-list{flex:1;overflow-y:auto;padding:1rem}.comment-item{background:#2a2a2a;padding:.75rem;margin-bottom:.75rem;border-radius:4px;cursor:pointer;transition:background .2s;border-left:3px solid transparent}.comment-item:hover{background:#333}.comment-item.active{background:#333;border-left-color:var(--accent)}.timestamp{font-size:.75rem;color:var(--accent);font-weight:700;margin-bottom:.25rem;display:block}.comment-input-area{padding:1rem;border-top:1px solid var(--border-color);background:#252525}.time-display{font-family:monospace;margin-bottom:.5rem;color:var(--text-secondary);font-size:.8rem}textarea{width:100%;background:#1e1e1e;border:1px solid var(--border-color);color:#fff;padding:.5rem;border-radius:4px;resize:none;font-family:inherit;box-sizing:border-box}button{margin-top:.5rem;background:var(--accent);color:#fff;border:none;padding:.5rem 1rem;border-radius:4px;cursor:pointer;font-weight:700}button:hover{opacity:.9}button:disabled{background:#555;cursor:not-allowed}.version-tabs-bar{display:flex;background:#101010;border-bottom:1px solid var(--border-color);overflow-x:auto}.version-tab{padding:.75rem 1.5rem;cursor:pointer;color:var(--text-secondary);font-weight:700;font-size:.9rem;border-right:1px solid var(--border-color);transition:all .2s}.version-tab:hover{background:#222;color:#fff}.version-tab.active{background:var(--bg-secondary);color:var(--accent);border-bottom:3px solid var(--accent)}.video-header{display:flex;justify-content:space-between;background:#000;padding:1.5rem 2rem;border-bottom:1px solid #222}.header-project{font-size:2.5rem;font-weight:800;color:#fff;letter-spacing:-.05em;display:flex;align-items:center}.header-info-col{display:flex;flex-direction:column;justify-content:center;align-items:flex-end;gap:.5rem}.header-edit{font-size:1.2rem;font-weight:600;color:#fff;text-transform:uppercase;letter-spacing:.05em}.header-client{font-size:1rem;font-weight:500;color:#fff;opacity:.9}.user-toggle{font-size:.8rem;background:#333;padding:.25rem .5rem;border-radius:4px;cursor:pointer}