:root{color-scheme:dark;--bg: #0f172a;--card: #16213c;--primary: #2e5bad;--primary-light: #4d7fd6;--danger: #d64545;--success: #2fa76a;--text: #f1f5f9;--text-dim: #9fb0c9;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Arial,sans-serif}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);overscroll-behavior:none}#app{min-height:100dvh;display:flex;flex-direction:column}button{font-family:inherit;cursor:pointer;border:none;border-radius:16px;font-size:1.1rem;padding:16px 20px;color:var(--text);background:var(--primary);transition:transform .08s ease,background .15s ease}button:active{transform:scale(.97)}button.secondary{background:var(--card)}button.danger{background:var(--danger)}button.success{background:var(--success)}button:disabled{opacity:.5;cursor:not-allowed}input{font-family:inherit;font-size:1.2rem;padding:14px 16px;border-radius:14px;border:2px solid #2a3a5c;background:#0c1526;color:var(--text);width:100%}input:focus{outline:none;border-color:var(--primary-light)}.screen{flex:1;display:flex;flex-direction:column;padding:24px 20px calc(20px + env(safe-area-inset-bottom));gap:16px}.screen-center{justify-content:center;align-items:center;text-align:center}h1{font-size:1.6rem;margin:0 0 4px}p.hint{color:var(--text-dim);margin:0;line-height:1.4}.card{background:var(--card);border-radius:20px;padding:20px;display:flex;flex-direction:column;gap:12px}.join-code{font-size:2.6rem;letter-spacing:.15em;font-weight:700;text-align:center;padding:12px 0}.tabs{display:flex;gap:8px}.tabs button{flex:1;background:var(--card)}.tabs button.active{background:var(--primary)}.call-btn-wrap{display:flex;align-items:center;justify-content:center;padding:8px 0}.call-btn{width:40vw;max-width:160px;aspect-ratio:1;border-radius:50%;background:linear-gradient(145deg,var(--success),#1d7a4c);font-size:1.1rem;font-weight:700;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 30px #2fa76a59}.chat-list{flex:1;min-height:0;overflow-y:auto;display:flex;flex-direction:column;gap:8px;padding:4px 2px}.msg{max-width:78%;padding:10px 14px;border-radius:16px;line-height:1.35;word-break:break-word}.msg.mine{align-self:flex-end;background:var(--primary);border-bottom-right-radius:4px}.msg.theirs{align-self:flex-start;background:var(--card);border-bottom-left-radius:4px}.msg .meta{display:block;font-size:.7rem;color:var(--text-dim);margin-top:4px}.chat-input-row{display:flex;gap:10px}.chat-input-row input{flex:1}.chat-input-row button{padding:14px 20px}.call-screen{position:fixed;top:0;right:0;bottom:0;left:0;background:#000;display:flex;flex-direction:column;z-index:50}.remote-video{flex:1;width:100%;object-fit:cover;background:#000}.local-video{position:absolute;top:calc(16px + env(safe-area-inset-top));right:16px;width:100px;height:140px;object-fit:cover;border-radius:12px;border:2px solid rgba(255,255,255,.3);background:#111}.call-controls{position:absolute;bottom:calc(28px + env(safe-area-inset-bottom));left:0;right:0;display:flex;justify-content:center;gap:24px}.call-controls button{width:66px;height:66px;border-radius:50%;font-size:1.5rem;display:flex;align-items:center;justify-content:center;padding:0}.call-status{position:absolute;top:calc(20px + env(safe-area-inset-top));left:20px;right:140px;color:#fff;font-size:1.1rem}.topbar{display:flex;justify-content:space-between;align-items:center}.topbar h2{margin:0;font-size:1.2rem}.icon-btn{background:transparent;padding:8px;font-size:1.3rem}.banner{padding:10px 14px;border-radius:12px;font-size:.9rem}.banner.error{background:#d6454533;color:#ffb4b4}.banner.info{background:#2e5bad40;color:#cfe0ff}.chat-input-row .icon-btn{background:var(--card);padding:12px 14px;font-size:1.2rem;flex-shrink:0}.emoji-panel{display:grid;grid-template-columns:repeat(8,1fr);gap:4px;background:var(--card);border-radius:16px;padding:10px;max-height:160px;overflow-y:auto}.emoji-panel[hidden]{display:none}.emoji-btn{background:transparent;font-size:1.5rem;padding:6px;border-radius:10px}.emoji-btn:active{background:#ffffff14}.recording-row{align-items:center}.recording-indicator{flex:1;display:flex;align-items:center;gap:8px;color:var(--text);font-size:1rem;padding:0 4px}.rec-dot{width:12px;height:12px;border-radius:50%;background:var(--danger);animation:rec-pulse 1s ease-in-out infinite}@keyframes rec-pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.8)}}.msg.audio-msg{padding:8px 10px}.msg.audio-msg audio{width:220px;max-width:60vw;height:40px;display:block}.conversation-list{flex:1;overflow-y:auto;display:flex;flex-direction:column}.conv-row{display:flex;align-items:center;gap:12px;padding:14px 4px;border-bottom:1px solid rgba(255,255,255,.06);cursor:pointer}.conv-row:active{background:#ffffff0a}.conv-avatar{width:48px;height:48px;border-radius:50%;background:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;flex-shrink:0}.conv-info{flex:1;min-width:0}.conv-name{font-weight:600}.conv-preview{color:var(--text-dim);font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-side{display:flex;flex-direction:column;align-items:flex-end;gap:6px;flex-shrink:0}.conv-time{color:var(--text-dim);font-size:.75rem}.conv-delete{padding:4px 8px;font-size:1rem;background:transparent}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;text-align:center;padding:40px 20px}.back-btn{background:transparent;font-size:1.4rem;padding:4px 10px}