:root{--accent:#1976d2;--accent-hover:#1565c0;--bg:#f0f2f5;--surface:#fff;--surface-alt:#f8f9fa;--text:#1a1a2e;--text-dim:#6b7280;--border:#e5e7eb;--sent-bg:#1976d2;--sent-text:#fff;--recv-bg:#fff;--recv-text:#1a1a2e;--system-bg:#e8f4fd;--error-bg:#fdecea;--radius:12px;--radius-sm:8px;--shadow:0 1px 3px #00000014}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);height:100vh;min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;overflow:hidden}#app{height:100vh}.app{flex-direction:column;height:100vh;display:flex}.header{color:#fff;background:linear-gradient(135deg,#1a1a2e,#16213e);flex-shrink:0;padding:12px 16px}.header-top{justify-content:space-between;align-items:center;display:flex}.header h1{letter-spacing:-.02em;font-size:1.25rem;font-weight:700}.header-meta{opacity:.85;align-items:center;gap:8px;font-size:.8rem;display:flex}.status-dot{background:#4ade80;border-radius:50%;width:8px;height:8px;display:inline-block}.status-dot.offline{background:#6b7280}.connect-btn{color:#fff;cursor:pointer;background:#ffffff1f;border:1px solid #ffffff40;border-radius:6px;padding:4px 10px;font-size:.75rem}.connect-btn:hover{background:#fff3}.send-btn:disabled{opacity:.5;cursor:not-allowed}.header-name{opacity:.75;align-items:center;gap:6px;margin-top:6px;font-size:.8rem;display:flex}.name-value{cursor:pointer;-webkit-text-decoration:underline dotted;text-decoration:underline dotted}.name-value:hover{opacity:1}.main{flex:1;display:flex;overflow:hidden}.sidebar{background:var(--surface);border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;width:180px;display:flex}.sidebar-header{text-transform:uppercase;letter-spacing:.05em;color:var(--text-dim);border-bottom:1px solid var(--border);padding:10px 14px;font-size:.75rem;font-weight:600}.peer-list{flex:1 1 0;min-height:0;padding:6px;overflow-y:auto}.peer-item{border-radius:var(--radius-sm);cursor:pointer;align-items:center;gap:8px;padding:8px 10px;font-size:.85rem;transition:background .15s;display:flex}.peer-item:hover{background:var(--surface-alt)}.peer-status-dot{border-radius:50%;flex-shrink:0;width:6px;height:6px}.peer-status-dot.online{background:#4ade80}.peer-status-dot.offline{background:#9ca3af}.peer-dot{border-radius:50%;flex-shrink:0;width:8px;height:8px}.peer-name{font-family:SF Mono,Fira Code,monospace;font-size:.8rem}.peer-hops{color:var(--accent,#38bdf8);background:#38bdf81f;border-radius:8px;flex-shrink:0;margin-left:auto;padding:1px 6px;font-size:.65rem;font-weight:600}.peer-typing{color:var(--text-dim);font-size:.7rem;font-style:italic}.peer-empty{text-align:center;color:var(--text-dim);padding:20px 14px;font-size:.8rem}.chat-area{flex-direction:column;flex:1;display:flex;overflow:hidden}.chat-header{color:var(--text-dim);border-bottom:1px solid var(--border);background:var(--surface);padding:8px 16px;font-size:.8rem;font-weight:500}.chat-target.dm{color:var(--accent)}.messages{flex-direction:column;flex:1;gap:8px;padding:16px;display:flex;overflow-y:auto}.msg{border-radius:var(--radius);max-width:75%;box-shadow:var(--shadow);padding:8px 12px;animation:.2s ease-out fadeIn}.msg-sent{background:var(--sent-bg);color:var(--sent-text);border-bottom-right-radius:4px;align-self:flex-end}.msg-recv{background:var(--recv-bg);color:var(--recv-text);border-bottom-left-radius:4px;align-self:flex-start}.msg-dm{border-left:3px solid var(--accent)}.msg-sent.msg-dm{border-left:none;border-right:3px solid #ffffff4d}.msg-header{align-items:center;gap:6px;margin-bottom:2px;display:flex}.msg-sender{font-size:.75rem;font-weight:600}.msg-sent .msg-sender{color:#ffffffd9}.msg-badge{text-transform:uppercase;background:#00000026;border-radius:4px;padding:1px 5px;font-size:.6rem;font-weight:600}.msg-time{color:#fff9;margin-left:auto;font-size:.6rem}.msg-recv .msg-time{color:var(--text-dim)}.msg-body{word-break:break-word;font-size:.9rem;line-height:1.4}.msg-system{color:var(--text-dim);background:var(--system-bg);border-radius:12px;align-self:center;padding:4px 12px;font-size:.75rem}.msg-system.error{background:var(--error-bg);color:#c62828}.typing-indicator{color:var(--text-dim);padding:4px 16px;font-size:.75rem;font-style:italic}.input-area{background:var(--surface);border-top:1px solid var(--border);align-items:center;gap:8px;padding:10px 16px;display:flex}.target-select{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);outline:none;min-width:100px;padding:8px 10px;font-size:.8rem}.target-select:focus{border-color:var(--accent)}.message-input{border:1px solid var(--border);border-radius:var(--radius-sm);outline:none;flex:1;padding:8px 14px;font-size:.9rem;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;white-space:nowrap;border:none;padding:8px 20px;font-size:.9rem;font-weight:500;transition:background .15s}.send-btn:hover{background:var(--accent-hover)}.send-btn:active{transform:translateY(1px)}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.messages::-webkit-scrollbar{width:5px}.peer-list::-webkit-scrollbar{width:5px}.messages::-webkit-scrollbar-track{background:0 0}.peer-list::-webkit-scrollbar-track{background:0 0}.messages::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:3px}.peer-list::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:3px}.sidebar-section{border-top:1px solid var(--border);padding:6px 10px}.sidebar-label{text-transform:uppercase;letter-spacing:.5px;color:var(--text-dim);margin-bottom:4px;font-size:10px;font-weight:600}.encryption-status{color:#4ade80;text-transform:none;letter-spacing:0;font-size:10px;font-weight:500}.group-controls{align-items:center;gap:4px;display:flex}.group-input,.encryption-input{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);flex:1;min-width:0;padding:3px 6px;font-size:12px}.group-input:focus,.encryption-input:focus{border-color:var(--accent);outline:none}.group-set-btn,.encryption-set-btn{background:var(--accent);color:#fff;border-radius:var(--radius-sm);cursor:pointer;border:none;padding:3px 8px;font-size:12px}.group-set-btn:hover,.encryption-set-btn:hover{background:var(--accent-hover)}.msg-badge-group{background:#7c3aed}.msg-group .msg-body{border-left:3px solid #7c3aed;padding-left:8px}@media (width<=640px){.sidebar{display:none}.msg{max-width:90%}.input-area{flex-wrap:wrap}.target-select{width:100%}}