*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0d1117;--surface: #161b22;--border: #30363d;--accent: #238636;--accent-dim: #1a6328;--danger: #da3633;--text: #e6edf3;--text-muted: #8b949e;--tx-green: #3fb950;--radius: 12px}html,body{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);overflow:hidden}.hidden{display:none!important}#callsign-screen{display:flex;align-items:center;justify-content:center;height:100%;padding:1rem}.join-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:2.5rem 2rem;width:100%;max-width:380px;display:flex;flex-direction:column;gap:2rem}.logo{text-align:center}.logo-icon{font-size:3rem;margin-bottom:.5rem}.logo h1{font-size:1.75rem;font-weight:700;letter-spacing:-.5px}.subtitle{color:var(--text-muted);font-size:.875rem;margin-top:.25rem}.form{display:flex;flex-direction:column;gap:.75rem}input{background:var(--bg);border:1px 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span{flex:1;color:var(--text-muted)}.audio-tools{padding:10px 20px;border-bottom:1px solid var(--border);font-size:13px}.audio-tools summary{cursor:pointer}.audio-settings{display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding-top:12px}.audio-settings label{display:flex;align-items:center;gap:8px}.audio-settings select,.audio-settings button{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:8px;max-width:230px}.audio-settings p{width:100%;color:var(--text-muted);line-height:1.5}button:disabled{cursor:not-allowed}button:focus-visible,a:focus-visible,summary:focus-visible,select:focus-visible{outline:2px solid var(--tx-green);outline-offset:3px}#callsign-screen{overflow-y:auto}#room-screen main{overflow-y:auto}#ptt-btn{flex-shrink:0}.connection-status{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 20px;background:var(--surface);border-bottom:1px solid 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var(--border);border-radius:8px;color:var(--text-muted);font-size:13px;line-height:1.6;text-align:center}.connection-recovery-error{padding:14px;border:1px solid var(--danger);border-radius:8px;font-size:13px;line-height:1.6}.connection-recovery-error p{color:var(--text-muted);margin-top:4px}