:root{--bg: #0e1012;--surface: #161819;--surface-2: #1e2123;--border: #2a2d2f;--accent: #5eb3d6;--accent-ink:#06181f;--ok: #4caf7d;--warn: #d6a13c;--danger: #d6644f;--text: #e7e9ea;--muted: #8a8f93;--radius: 8px;--font-sans: "Segoe UI", system-ui, -apple-system, sans-serif;--font-mono: "Consolas", "SF Mono", monospace}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:var(--font-sans);background:var(--bg);background-image:linear-gradient(var(--border) 1px,transparent 1px),linear-gradient(90deg,var(--border) 1px,transparent 1px);background-size:48px 48px;background-position:center;color:var(--text);min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:16px;overflow-x:hidden}button{font-family:inherit}svg{display:block}.header{position:fixed;top:0;left:0;right:0;padding:16px 24px;display:flex;align-items:center;gap:10px;background:linear-gradient(180deg,var(--bg) 60%,transparent 100%);z-index:100}.wordmark{font-family:var(--font-mono);font-weight:700;font-size:1.05rem;letter-spacing:-.01em;color:var(--text)}.wordmark span{color:var(--accent)}.status-pill{margin-left:auto;font-size:.72rem;color:var(--muted);background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);padding:5px 10px;display:flex;align-items:center;gap:6px}.status-dot{width:6px;height:6px;border-radius:50%;background:var(--ok);flex-shrink:0}.status-dot.danger{background:var(--danger)}.app{width:100%;max-width:900px;padding-top:64px}.screen{display:flex;animation:rise .25s ease both}@keyframes rise{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}#screen-connect{flex-direction:column;gap:24px}.connect-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;width:100%}@media (max-width: 640px){.connect-grid{grid-template-columns:1fr}}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;display:flex;flex-direction:column;align-items:center;gap:16px}.card-label{font-size:.7rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.qr-wrap{position:relative;width:200px;height:200px;background:#fff;border-radius:6px;overflow:hidden;display:flex;align-items:center;justify-content:center}.qr-wrap img{width:100%;height:100%;object-fit:contain}.qr-placeholder{width:100%;height:100%;background:linear-gradient(100deg,#eee 30%,#f7f7f7,#eee 70%);background-size:220% 100%;animation:shimmer 1.4s infinite linear}@keyframes shimmer{0%{background-position:120% 0}to{background-position:-20% 0}}.code-badge{display:flex;align-items:center;gap:8px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);padding:10px 16px;font-family:var(--font-mono);font-size:1.5rem;font-weight:700;letter-spacing:.22em;color:var(--accent)}.icon-btn{background:none;border:none;cursor:pointer;color:var(--muted);display:flex;align-items:center;justify-content:center;padding:2px;transition:color .15s}.icon-btn:hover{color:var(--accent)}.share-link{display:flex;align-items:center;gap:6px;width:100%;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);padding:8px 10px}.share-link input{flex:1;min-width:0;background:none;border:none;outline:none;color:var(--muted);font-family:var(--font-mono);font-size:.76rem}.join-card{justify-content:center}.input-group{display:flex;flex-direction:column;gap:8px;width:100%}.input-group label{font-size:.8rem;color:var(--muted)}.code-input{background:var(--surface-2);border:1.5px solid var(--border);border-radius:var(--radius);padding:14px 16px;font-size:1.9rem;font-family:var(--font-mono);font-weight:700;letter-spacing:.3em;color:var(--text);width:100%;text-align:center;transition:border-color .15s;outline:none}.code-input:focus{border-color:var(--accent)}.code-input::placeholder{color:var(--border);letter-spacing:.1em}.btn{width:100%;padding:13px;border:1px solid transparent;border-radius:var(--radius);font-size:.92rem;font-weight:600;cursor:pointer;transition:filter .15s,transform .1s,border-color .15s}.btn:hover{filter:brightness(1.08)}.btn:active{transform:scale(.98)}.btn-primary{background:var(--accent);color:var(--accent-ink)}.btn-ghost{background:var(--surface-2);border-color:var(--border);color:var(--text)}.status-msg{font-size:.8rem;color:var(--muted);text-align:center;min-height:18px}.status-msg.error{color:var(--danger)}#screen-chat{flex-direction:column;height:calc(100vh - 88px);max-height:820px;gap:0;width:100%}.chat-header{display:flex;align-items:center;gap:12px;padding:14px 20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius) var(--radius) 0 0}.peer-dot{width:9px;height:9px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px #4caf7d2e;flex-shrink:0}.peer-dot.muted{background:var(--muted);box-shadow:none}.peer-name{font-weight:600;font-size:.9rem}.peer-sub{font-size:.74rem;color:var(--muted)}.disconnect-btn{margin-left:auto;background:none;border:1px solid var(--border);border-radius:var(--radius);padding:6px 12px;font-size:.76rem;color:var(--muted);cursor:pointer;transition:all .15s}.disconnect-btn:hover{border-color:var(--danger);color:var(--danger)}.messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px;background:var(--bg);border-left:1px solid var(--border);border-right:1px solid var(--border)}.messages::-webkit-scrollbar{width:5px}.messages::-webkit-scrollbar-thumb{background:var(--border);border-radius:99px}.msg{display:flex;flex-direction:column;gap:3px;max-width:78%}.msg.me{align-self:flex-end;align-items:flex-end}.msg.them{align-self:flex-start;align-items:flex-start}.bubble{border-radius:var(--radius);padding:10px 14px;font-size:.87rem;line-height:1.5;word-break:break-word}.me .bubble{background:var(--accent);color:var(--accent-ink)}.them .bubble{background:var(--surface);border:1px solid var(--border);color:var(--text)}.file-bubble{display:flex;align-items:center;gap:12px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px;min-width:220px;max-width:300px}.file-icon{width:34px;height:34px;flex-shrink:0;color:var(--accent)}.file-info{flex:1;min-width:0}.file-name{font-size:.82rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-size{font-size:.72rem;color:var(--muted)}.file-progress{margin-top:6px}.progress-bar-wrap{height:4px;background:var(--border);border-radius:99px;overflow:hidden;margin-top:4px}.progress-bar-fill{height:100%;background:var(--accent);border-radius:99px;transition:width .2s linear}.progress-label{font-size:.7rem;color:var(--muted);margin-top:3px}.download-btn{margin-top:6px;display:inline-flex;align-items:center;gap:5px;font-size:.76rem;font-weight:600;color:var(--accent);background:none;border:none;cursor:pointer;padding:0;text-decoration:none}.download-btn:hover{filter:brightness(1.2)}.time-label{font-size:.65rem;color:var(--muted)}.toast{position:fixed;bottom:90px;left:50%;transform:translate(-50%) translateY(20px);background:var(--surface);border:1px solid var(--accent);border-radius:var(--radius);padding:10px 18px;font-size:.82rem;color:var(--text);z-index:200;opacity:0;transition:opacity .3s,transform .3s;pointer-events:none;white-space:nowrap}.toast.show{opacity:1;transform:translate(-50%) translateY(0)}.input-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;background:var(--surface);border:1px solid var(--border);border-top:none;border-radius:0 0 var(--radius) var(--radius)}.icon-action-btn{width:40px;height:40px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--text);transition:border-color .15s}.icon-action-btn:hover{border-color:var(--accent)}.text-input{flex:1;background:var(--surface-2);border:1.5px solid var(--border);border-radius:var(--radius);padding:10px 14px;font-size:.9rem;color:var(--text);outline:none;transition:border-color .15s;font-family:var(--font-sans)}.text-input:focus{border-color:var(--accent)}.text-input::placeholder{color:var(--muted)}.send-btn{width:40px;height:40px;background:var(--accent);border:none;border-radius:var(--radius);cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--accent-ink);flex-shrink:0;transition:filter .15s}.send-btn:hover{filter:brightness(1.08)}#screen-waiting{flex-direction:column;align-items:center;justify-content:center;gap:20px;min-height:260px}.spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}#screen-collapsed,#screen-full{flex-direction:column;align-items:center;justify-content:center;gap:16px;text-align:center;padding:40px 20px}.collapse-icon{color:var(--danger)}.collapse-title{font-size:1.3rem;font-weight:700;color:var(--danger)}.collapse-body{font-size:.9rem;color:var(--muted);max-width:360px;line-height:1.6}.system-msg{align-self:center;font-size:.72rem;color:var(--muted);padding:4px 12px;background:var(--surface);border:1px solid var(--border);border-radius:999px}#file-input{display:none}@media (max-width: 480px){.card{padding:20px 16px}.code-badge{font-size:1.25rem}.code-input{font-size:1.5rem}#screen-chat{height:calc(100vh - 78px)}}