:root{--bg: #05080a;--bg-panel: #0a0f0d;--bg-raised: #0f1712;--border: #1e3a2a;--border-bright: #2f6b45;--green: #33ff88;--green-dim: #1f9955;--green-soft: #8fffc0;--text: #d9ffe6;--text-dim: #6c8f7a;--error: #ff5f5f;--error-bg: #2a0f0f;--info: #ffd166;--font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace}*{box-sizing:border-box}html,body,#app{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-mono);font-size:14px;-webkit-font-smoothing:antialiased}button,input{font-family:inherit;font-size:inherit}::selection{background:var(--green-dim);color:#05080a}.boot-screen{height:100%;display:flex;align-items:center;justify-content:center;color:var(--green-dim);letter-spacing:.05em}.auth-screen{height:100%;display:flex;align-items:center;justify-content:center;padding:16px}.auth-card{width:100%;max-width:360px;background:var(--bg-panel);border:1px solid var(--border);border-radius:4px;padding:28px 24px;box-shadow:0 0 24px #33ff880f}.brand{margin:0 0 4px;font-size:20px;letter-spacing:.08em;color:var(--green);text-shadow:0 0 6px rgba(51,255,136,.35)}.brand span{color:var(--green-dim)}.tagline{margin:0 0 20px;color:var(--text-dim);font-size:12px}.auth-card form{display:flex;flex-direction:column;gap:14px}.auth-card label{display:flex;flex-direction:column;gap:6px;font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim)}input[type=text],input[type=password]{background:var(--bg);border:1px solid var(--border);border-radius:3px;color:var(--text);padding:9px 10px;outline:none;transition:border-color .15s ease}input[type=text]:focus,input[type=password]:focus{border-color:var(--green-dim)}button{cursor:pointer;background:transparent;border:1px solid var(--green-dim);color:var(--green);border-radius:3px;padding:9px 14px;transition:background-color .15s ease,color .15s ease}button:hover:not(:disabled){background:var(--green-dim);color:#05080a}button:disabled{opacity:.5;cursor:not-allowed}.error-text{margin:0;color:var(--error);font-size:12px}.chat-shell{height:100%;display:flex;flex-direction:column}.chat-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;border-bottom:1px solid var(--border);background:var(--bg-panel)}.chat-header .brand{font-size:16px;margin:0}.header-right{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.username-badge{color:var(--green-soft);font-size:12px;border:1px solid var(--border);border-radius:3px;padding:3px 8px}.logout-btn{padding:5px 10px;font-size:12px}.conn-status{display:inline-flex;align-items:center;gap:6px;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-dim)}.conn-dot{width:7px;height:7px;border-radius:50%;background:var(--text-dim)}.conn-status.online{color:var(--green-soft)}.conn-status.online .conn-dot{background:var(--green);box-shadow:0 0 4px var(--green)}.conn-status.connecting .conn-dot,.conn-status.reconnecting .conn-dot{background:var(--info)}.conn-status.reconnecting,.conn-status.connecting{color:var(--info)}.conn-status.offline .conn-dot{background:var(--error)}.conn-status.offline{color:var(--error)}.message-list{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}.empty-hint{color:var(--text-dim);font-size:12px}.message-row{max-width:640px;border-left:2px solid var(--border-bright);padding:4px 0 4px 10px}.message-row.mine{border-left-color:var(--green)}.message-meta{display:flex;gap:8px;align-items:baseline;font-size:11px;margin-bottom:2px}.message-user{color:var(--green-soft);font-weight:600}.message-time{color:var(--text-dim)}.message-text{margin:0;white-space:pre-wrap;word-break:break-word;line-height:1.4}.message-file{display:inline-flex;align-items:center;gap:6px;color:var(--green);text-decoration:none;border:1px solid var(--border);border-radius:3px;padding:4px 8px;font-size:13px}.message-file:hover{border-color:var(--green-dim)}.file-size{color:var(--text-dim);font-size:11px}.banner{margin:0;padding:6px 16px;font-size:12px;border-top:1px solid var(--border)}.error-banner{color:var(--error);background:var(--error-bg)}.info-banner{color:var(--info)}.composer{display:flex;align-items:center;gap:8px;padding:10px 16px;border-top:1px solid var(--border);background:var(--bg-panel)}.hidden-input{display:none}.attach-btn{padding:8px 10px;flex:0 0 auto}.message-input{flex:1;background:var(--bg);border:1px solid var(--border);border-radius:3px;color:var(--text);padding:9px 10px;outline:none;min-width:0}.message-input:focus{border-color:var(--green-dim)}.send-btn{flex:0 0 auto;padding:8px 16px}@media (max-width: 640px){.chat-header{flex-wrap:wrap}.message-row{max-width:100%}.composer{padding:8px 10px}.message-list{padding:12px}}