:root{color-scheme:dark;--bg:#0c0d10;--panel:#16181d;--border:#2a2d34;--text:#e8e8ec;--muted:#9aa0a6;--accent:#4f8cff;--danger:#ef4444;--ok:#22c55e}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans KR,sans-serif}a{color:var(--accent);text-decoration:none}button,input{font:inherit;color:inherit}button{background:var(--accent);border:none;border-radius:6px;padding:8px 14px;cursor:pointer}button.secondary{background:var(--panel);border:1px solid var(--border)}button.danger-button{background:var(--danger)}button:disabled{opacity:.5;cursor:not-allowed}input[type=file],input[type=password],input[type=text]{background:var(--panel);border:1px solid var(--border);border-radius:6px;padding:8px 10px}.container{max-width:1100px;margin:0 auto;padding:24px}.topbar{display:flex;justify-content:space-between;align-items:center;padding:16px 24px;border-bottom:1px solid var(--border)}.muted{color:var(--muted)}.danger{color:var(--danger)}.ok{color:var(--ok)}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));grid-gap:16px;gap:16px}.selection-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 0 16px;flex-wrap:wrap}.selection-count{color:var(--muted);font-size:14px}.video-tile{position:relative}.card{background:var(--panel);border:1px solid var(--border);border-radius:8px;overflow:hidden;cursor:pointer;transition:transform .1s ease}.card:hover{transform:translateY(-2px)}.selectable-card{outline:2px solid transparent}.selected-card{border-color:var(--danger);outline-color:rgba(239,68,68,.36)}.card .thumb{aspect-ratio:16/9;background:#000;display:flex;align-items:center;justify-content:center;color:var(--muted)}.card .thumb img{width:100%;height:100%;object-fit:cover}.card .body{padding:10px 12px}.card .title{font-weight:600;margin:0 0 4px}.card .meta{font-size:12px;color:var(--muted)}.select-video{position:absolute;top:8px;left:8px;z-index:2;width:30px;height:30px;display:grid;place-items:center;background:rgba(12,13,16,.78);border:1px solid rgba(255,255,255,.22);border-radius:6px;cursor:pointer}.select-video input{position:absolute;opacity:0;pointer-events:none}.select-video span{width:16px;height:16px;border:2px solid var(--text);border-radius:4px;display:block}.select-video input:checked+span{background:var(--danger);border-color:var(--danger);box-shadow:inset 0 0 0 3px var(--panel)}.player-wrap{background:#000;aspect-ratio:16/9;border-radius:8px;overflow:hidden}.player-wrap video{width:100%;height:100%;display:block;background:#000}.upload-form{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:16px;flex-direction:column;margin-bottom:24px}.row,.upload-form{display:flex;gap:10px}.row{align-items:center;flex-wrap:wrap}