:root{--bg: #0b0d10;--surface: #14181d;--surface-2: #1b2027;--line: #2a323c;--text: #e8edf2;--muted: #97a3b0;--accent: #4c8dff;--yt: #ff3d3d;--tw: #9146ff;--danger: #ff6b6b;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Hiragino Sans,Noto Sans JP,sans-serif;font-size:15px;line-height:1.6}.app{max-width:900px;margin:0 auto;padding:max(12px,env(safe-area-inset-top)) 12px calc(24px + env(safe-area-inset-bottom))}.app-head{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:baseline;justify-content:space-between}.app-head h1{font-size:1.25rem;margin:0}.authbar{display:flex;flex-wrap:wrap;gap:8px;font-size:.85rem;color:var(--muted)}.auth-item{display:inline-flex;align-items:center;gap:6px}.auth-disabled{opacity:.6}button{font:inherit;color:var(--text);background:var(--surface-2);border:1px solid var(--line);border-radius:8px;padding:6px 10px;cursor:pointer;min-height:36px}button:disabled{opacity:.45;cursor:not-allowed}input[type=url],input[type=text],.chat-send input{font:inherit;color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:8px 10px;width:100%;min-height:40px}.banner{background:var(--surface-2);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:8px;padding:10px 12px;font-size:.88rem}.banner-error{border-left-color:var(--danger)}.add-form{margin:16px 0 8px}.add-label{display:block;font-size:.85rem;color:var(--muted);margin-bottom:4px}.add-row{display:flex;gap:8px}.add-row button{flex:0 0 auto;width:48px;font-size:1.1rem}.add-error{color:var(--danger);font-size:.85rem;margin:6px 0 0}.add-hint{color:var(--muted);font-size:.78rem;margin:6px 0 0}.mode-toggle{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--muted);margin:8px 0 16px}.grid{display:grid;gap:16px}.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden}.card-head{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--line)}.card-title{flex:1 1 auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.92rem}.badge{font-size:.7rem;padding:2px 6px;border-radius:999px;border:1px solid var(--line);white-space:nowrap}.badge-youtube{color:var(--yt);border-color:var(--yt)}.badge-twitch{color:var(--tw);border-color:var(--tw)}.badge-live{color:#fff;background:var(--yt);border-color:transparent}.icon-btn{min-width:40px;padding:6px 8px}.player-frame{position:relative;width:100%;aspect-ratio:16 / 9;background:#000}.player-frame .player-host,.player-frame iframe,.player-frame .twitch-host{position:absolute;inset:0;width:100%;height:100%;border:0}.player-error{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;text-align:center;padding:16px;color:var(--danger);font-size:.85rem}.controls{display:flex;align-items:center;gap:8px;padding:10px 12px;flex-wrap:wrap}.audio-focus{flex:0 1 auto;white-space:nowrap}.audio-focus.on{border-color:var(--accent);color:var(--accent)}.volume{flex:1 1 90px;min-width:90px;accent-color:var(--accent)}.volume-value{font-variant-numeric:tabular-nums;color:var(--muted);font-size:.8rem;min-width:3.5em;text-align:right}.hint{margin:0;padding:0 12px 10px;font-size:.78rem;color:var(--muted)}.chat-toggle{margin:0 12px 12px}.chat-wrap{border-top:1px solid var(--line);padding:10px 12px 12px}.chat-tabs{display:flex;gap:6px;margin-bottom:8px}.chat-tabs button.active{border-color:var(--accent);color:var(--accent)}.chat-frame{width:100%;height:360px;border:1px solid var(--line);border-radius:8px;background:#18181b}.chat{border:1px solid var(--line);border-radius:8px;overflow:hidden}.chat-status{font-size:.75rem;color:var(--muted);padding:6px 8px;border-bottom:1px solid var(--line)}.chat-list{height:280px;overflow-y:auto;padding:6px 8px;font-size:.85rem;overflow-wrap:anywhere}.chat-msg{padding:2px 0}.chat-user{font-weight:600;margin-right:6px}.chat-empty,.chat-note{color:var(--muted);font-size:.8rem;padding:6px 0}.chat-error{color:var(--danger);font-size:.8rem;padding:6px 8px}.chat-send{display:flex;gap:6px;padding:6px 8px;border-top:1px solid var(--line)}.chat-send button{flex:0 0 auto}.empty{color:var(--muted);text-align:center;padding:32px 0}.diag{margin-top:24px;border-top:1px solid var(--line);padding-top:16px}.diag-body{margin-top:12px;font-size:.85rem}.diag-env{color:var(--muted);font-size:.78rem;overflow-wrap:anywhere}.diag-list{margin:12px 0 0}.diag-row{border-top:1px solid var(--line);padding:8px 0}.diag-row dt{font-weight:600}.diag-row dd{margin:4px 0 0;color:var(--muted);overflow-wrap:anywhere}.diag-note{display:block;font-size:.75rem;opacity:.8;margin-top:2px}.app-foot{margin-top:24px;color:var(--muted);font-size:.75rem}@media(min-width:720px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}