body{min-width:320px;min-height:100vh;margin:0}#root{width:100%;height:100vh}:root{--bg:#0d1117;--surface:#161b22;--surface-hover:#1f2937;--border:#30363d;--text:#e6edf3;--text-muted:#7d8590;--accent:#2ea043;--accent-hover:#3fb950;--danger:#f85149;--radius:12px;--radius-sm:8px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;overflow:hidden}.app{flex-direction:column;max-width:720px;height:100vh;margin:0 auto;display:flex}.app-header{background:var(--surface);border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.header-left h1{font-size:1.25rem;font-weight:700}.connection-info{color:var(--text-muted);align-items:center;gap:6px;margin-top:2px;font-size:.8rem;display:flex}.status-dot{background:var(--text-muted);border-radius:50%;width:8px;height:8px;display:inline-block}.status-dot.connected{background:var(--accent)}.status-dot.connecting{background:#d29922;animation:1.5s infinite pulse}.status-dot.error{background:var(--danger)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.header-right{flex-direction:column;align-items:flex-end;gap:4px;display:flex}.server-info{flex-direction:column;align-items:flex-end;gap:2px;display:flex}.badge{color:var(--text-muted);background:var(--bg);border:1px solid var(--border);border-radius:4px;padding:2px 8px;font-size:.7rem}.app-body{flex-direction:column;flex:1;display:flex;overflow:hidden}.feed{flex-direction:column;flex:1;gap:12px;padding:16px;display:flex;overflow-y:auto}.empty-state{text-align:center;color:var(--text-muted);padding:48px 16px}.empty-state .hint{opacity:.7;margin-top:8px;font-size:.85rem}.message-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;transition:border-color .15s}.message-card:hover{border-color:var(--text-muted)}.message-card.own{border-left:3px solid var(--accent)}.message-header{justify-content:space-between;align-items:center;margin-bottom:6px;display:flex}.message-author{color:var(--accent);font-size:.85rem;font-weight:600}.message-time{color:var(--text-muted);font-size:.75rem}.message-content{word-break:break-word;white-space:pre-wrap;font-size:.95rem;line-height:1.5}.message-images{flex-wrap:wrap;gap:8px;margin-top:10px;display:flex}.message-image{border-radius:var(--radius-sm);object-fit:cover;cursor:pointer;border:1px solid var(--border);max-width:200px;max-height:200px}.message-image:hover{border-color:var(--text-muted)}.composer{background:var(--surface);border-top:1px solid var(--border);flex-shrink:0;padding:12px 16px}.pending-images{flex-wrap:wrap;gap:8px;margin-bottom:8px;display:flex}.pending-image-preview{width:64px;height:64px;position:relative}.pending-image-preview img{object-fit:cover;border-radius:var(--radius-sm);border:1px solid var(--border);width:100%;height:100%}.remove-image{background:var(--danger);color:#fff;cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;width:20px;height:20px;font-size:.8rem;line-height:1;display:flex;position:absolute;top:-6px;right:-6px}.composer-row{align-items:flex-end;gap:8px;display:flex}.attach-btn{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);cursor:pointer;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;font-size:1.2rem;transition:background .15s,border-color .15s;display:flex}.attach-btn:hover:not(:disabled){background:var(--surface-hover);border-color:var(--text-muted)}.attach-btn:disabled{opacity:.5;cursor:not-allowed}.message-input{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);resize:none;outline:none;flex:1;min-height:40px;max-height:120px;padding:10px 12px;font-family:inherit;font-size:.95rem;transition:border-color .15s}.message-input:focus{border-color:var(--accent)}.send-btn{background:var(--accent);color:#fff;border-radius:var(--radius-sm);cursor:pointer;border:none;flex-shrink:0;height:40px;padding:10px 20px;font-size:.9rem;font-weight:600;transition:background .15s}.send-btn:hover:not(:disabled){background:var(--accent-hover)}.send-btn:disabled{opacity:.4;cursor:not-allowed}.pubkey-display{color:var(--text-muted);text-align:center;margin-top:6px;font-family:monospace;font-size:.7rem}.feed::-webkit-scrollbar{width:6px}.feed::-webkit-scrollbar-track{background:0 0}.feed::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.feed::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}