:root{--ground: #101a1d;--surface: #16242a;--surface-2: #1c2f36;--ink: #e6edef;--muted: #93a6ad;--line: #26383e;--accent: #0e7c86;--accent-bright: #4cbec8;--danger: #c0504d;--ok: #58b368}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:var(--ground);color:var(--ink);font-family:Segoe UI,system-ui,-apple-system,sans-serif;line-height:1.5;-webkit-tap-highlight-color:transparent}#app{max-width:30rem;margin:0 auto;min-height:100dvh;display:flex;flex-direction:column;padding:max(1.2rem,env(safe-area-inset-top)) 1.2rem max(1.2rem,env(safe-area-inset-bottom))}.screen{flex:1;display:flex;flex-direction:column;gap:1.5rem}.brand{text-align:center;margin-top:2.5rem}.brand h1{margin:.6rem 0 .2rem;font-size:2rem;letter-spacing:-.02em}.tagline{color:var(--muted);margin:0}#join-form{display:flex;flex-direction:column;gap:1rem}label{display:flex;flex-direction:column;gap:.35rem;font-size:.9rem;font-weight:600;color:var(--muted)}input{background:var(--surface);border:1px solid var(--line);border-radius:10px;color:var(--ink);font-size:1.1rem;padding:.8rem 1rem}input:focus-visible{outline:2px solid var(--accent-bright);outline-offset:1px;border-color:transparent}#room-code{text-transform:uppercase}button{font:inherit;font-weight:700;border:none;border-radius:10px;cursor:pointer;color:var(--ink)}button:focus-visible{outline:2px solid var(--accent-bright);outline-offset:2px}.primary{background:var(--accent);padding:.95rem;font-size:1.05rem}.primary:active{background:var(--accent-bright);color:var(--ground)}.primary[disabled]{opacity:.6;cursor:default}.danger{background:transparent;border:1px solid var(--danger);color:var(--danger);padding:.5rem 1rem}.error{color:#e8a09e;background:#c0504d26;border-radius:8px;padding:.6rem .9rem;margin:0}.hint{color:var(--muted);font-size:.85rem;text-align:center;margin:0}.room-header{display:flex;align-items:center;justify-content:space-between;gap:1rem}.room-header h2{margin:0;font-size:1.3rem}.status{margin:0;color:var(--muted);font-size:.85rem}.participants{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.6rem}.participant{display:flex;flex-direction:column;gap:.4rem;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:.75rem 1rem}.participant .row{display:flex;align-items:center;gap:.8rem}.participant.speaking{border-color:var(--accent-bright);background:var(--surface-2)}.dot{width:.7rem;height:.7rem;border-radius:50%;background:var(--muted);flex:none}.participant.speaking .dot{background:var(--accent-bright);box-shadow:0 0 8px var(--accent-bright)}.participant.connected .dot{background:var(--ok)}.participant.speaking.connected .dot{background:var(--accent-bright);box-shadow:0 0 8px var(--accent-bright)}.participant .name{font-weight:600;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis}.participant .state{color:var(--muted);font-size:.8rem;flex:none}.caption{border-top:1px solid var(--line);padding-top:.4rem}.caption p{margin:0}.caption-original{color:var(--muted);font-size:.82rem;font-style:italic}.caption-translated{font-size:.95rem}select{background:var(--surface);border:1px solid var(--line);border-radius:10px;color:var(--ink);font-size:1.1rem;padding:.8rem 1rem;-webkit-appearance:none;-moz-appearance:none;appearance:none}select:focus-visible{outline:2px solid var(--accent-bright);outline-offset:1px;border-color:transparent}.ptt-area{margin-top:auto;display:flex;flex-direction:column;align-items:center;gap:.7rem;padding-bottom:.5rem}.ptt{width:min(60vw,14rem);aspect-ratio:1;border-radius:50%;background:var(--surface-2);border:3px solid var(--accent);color:var(--ink);font-size:.95rem;letter-spacing:.06em;user-select:none;-webkit-user-select:none;touch-action:none;transition:transform 80ms ease,background 80ms ease}.ptt.talking{background:var(--accent);border-color:var(--accent-bright);transform:scale(.96);box-shadow:0 0 24px #4cbec873}@media(prefers-reduced-motion:reduce){.ptt{transition:none}}