:root{--bg:#0f1115;--panel:#171a21;--border:#262b36;--text:#e6e8ec;--muted:#8b93a1;--user:#2563eb;--assistant:#1f2530;--accent:#4f8cff}*{box-sizing:border-box}body,html{margin:0;padding:0;height:100%;background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.app{display:flex;flex-direction:column;height:100vh;flex:1 1;min-width:0}.header{padding:14px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px}.header h1{font-size:17px;font-weight:600;margin:0}.header .model{font-size:12px;color:var(--muted);background:var(--panel);border:1px solid var(--border);padding:2px 8px;border-radius:999px}.messages{flex:1 1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:16px}.empty{margin:auto;color:var(--muted);text-align:center;font-size:14px}.msg{display:flex;flex-direction:column;gap:4px;max-width:100%}.msg .role{font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.bubble{padding:12px 15px;border-radius:12px;white-space:pre-wrap;word-wrap:break-word;line-height:1.6;font-size:16px}.msg.user .bubble{background:var(--user);color:white;align-self:flex-end}.msg.assistant .bubble{background:var(--assistant);border:1px solid var(--border);align-self:flex-start}.cursor:after{content:"▋";animation:blink 1s steps(2) infinite;color:var(--accent)}@keyframes blink{0%,50%{opacity:1}50.01%,to{opacity:0}}.composer{border-top:1px solid var(--border);padding:14px 16px;display:flex;gap:10px;align-items:flex-end}.composer textarea{flex:1 1;resize:none;background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:10px;padding:12px;font:inherit;font-size:16px;line-height:1.5;max-height:200px;outline:none}.composer textarea:focus{border-color:var(--accent)}.composer button{background:var(--accent);color:white;border:none;border-radius:10px;padding:12px 18px;font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap}.composer button:disabled{opacity:.5;cursor:not-allowed}.composer button.stop{background:#b91c1c}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:radial-gradient(1200px 600px at 50% -10%,#1b2230 0,var(--bg) 60%)}.login-card{width:100%;max-width:360px;background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:32px 28px;display:flex;flex-direction:column;gap:14px;box-shadow:0 20px 60px rgba(0,0,0,.45);text-align:center}.login-logo{font-size:30px;color:var(--accent);line-height:1;margin-bottom:2px}.login-card h1{margin:0;font-size:20px;font-weight:650}.login-sub{margin:0 0 6px;color:var(--muted);font-size:13px}.login-card input{background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:10px;padding:12px 14px;font-size:16px;outline:none;text-align:center}.login-card input:focus{border-color:var(--accent)}.login-card input.err{border-color:#b91c1c}.login-error{color:#f87171;font-size:13px;margin-top:-4px}.login-card button{background:var(--accent);color:white;border:none;border-radius:10px;padding:12px 18px;font-size:15px;font-weight:600;cursor:pointer;margin-top:4px}.login-card button:disabled{opacity:.5;cursor:not-allowed}.header .logout{margin-left:auto;background:transparent;color:var(--muted);border:1px solid var(--border);border-radius:8px;padding:4px 10px;font-size:12px;cursor:pointer}.header .logout:hover{color:var(--text);border-color:var(--accent)}.layout{display:flex;height:100vh;width:100%}.sidebar{width:270px;flex-shrink:0;background:#0c0e12;border-right:1px solid var(--border);display:flex;flex-direction:column;padding:12px;gap:10px}.new-chat{background:var(--accent);color:white;border:none;border-radius:10px;padding:11px 14px;font-size:15px;font-weight:600;cursor:pointer}.conv-list{flex:1 1;overflow-y:auto;display:flex;flex-direction:column;gap:2px}.conv-empty{color:var(--muted);font-size:13px;padding:12px 8px;text-align:center}.conv-item{display:flex;align-items:center;gap:6px;padding:10px;border-radius:8px;cursor:pointer;color:var(--text)}.conv-item:hover{background:var(--panel)}.conv-item.active{background:var(--assistant);border:1px solid var(--border)}.conv-title{flex:1 1;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-del{background:transparent;border:none;color:var(--muted);cursor:pointer;font-size:13px;opacity:0;padding:2px 4px;border-radius:6px}.conv-item:hover .conv-del{opacity:1}.conv-del:hover{color:#f87171}.hamburger{background:transparent;border:none;color:var(--text);font-size:20px;cursor:pointer;padding:0 4px}.hamburger,.scrim{display:none}.app .composer,.app .messages{width:100%;max-width:820px;margin-left:auto;margin-right:auto}@media (max-width:768px){.hamburger{display:inline-block}.sidebar{position:fixed;top:0;left:0;bottom:0;z-index:30;transform:translateX(-100%);transition:transform .2s ease;box-shadow:2px 0 20px rgba(0,0,0,.5)}.sidebar.open{transform:translateX(0)}.scrim{display:block;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:20}}.login-card .qr{width:200px;height:200px;align-self:center;border-radius:12px;background:#fff;padding:8px}.secret-label{color:var(--muted);font-size:12px;margin-top:2px}.login-card .secret{display:block;font-size:15px;letter-spacing:1px;word-break:break-all;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:10px 12px;cursor:pointer;-webkit-user-select:all;-moz-user-select:all;user-select:all}.login-card .secret,.login-card input.code{font-family:ui-monospace,SF Mono,Menlo,monospace}.login-card input.code{letter-spacing:6px}.model-select{margin-left:auto;background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:6px 10px;font-size:13px;max-width:220px;cursor:pointer}.model-select:focus{outline:none;border-color:var(--accent)}.sidebar-footer{border-top:1px solid var(--border);padding-top:10px;display:flex;flex-direction:column;gap:8px}.side-link{color:var(--text);text-decoration:none;font-size:14px;padding:8px 10px;border-radius:8px}.side-link:hover{background:var(--panel)}.side-user{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:13px;color:var(--muted);padding:0 4px}.settings-wrap{min-height:100vh;display:flex;justify-content:center;padding:32px 20px}.settings-card{width:100%;max-width:720px;display:flex;flex-direction:column;gap:12px}.settings-head{display:flex;align-items:center;justify-content:space-between}.back-link{color:var(--accent);text-decoration:none;font-size:14px}.settings-card h1{font-size:22px;margin:4px 0 0}.prompt-area{width:100%;background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:12px;padding:14px;font:inherit;font-size:16px;line-height:1.6;resize:vertical;outline:none}.prompt-area:focus{border-color:var(--accent)}.settings-actions{display:flex;align-items:center;gap:12px}.settings-actions button{background:var(--accent);color:#fff;border:none;border-radius:10px;padding:10px 22px;font-size:15px;font-weight:600;cursor:pointer}.settings-actions button:disabled{opacity:.5}.saved-msg{color:#4ade80;font-size:14px}.msg-actions{display:flex;gap:6px;margin-top:2px;opacity:0;transition:opacity .12s ease}.msg.user .msg-actions{justify-content:flex-end}.msg:hover .msg-actions{opacity:1}.msg-actions button{background:transparent;border:1px solid var(--border);color:var(--muted);border-radius:7px;padding:2px 8px;font-size:12px;cursor:pointer}.msg-actions button:hover{color:var(--text);border-color:var(--accent)}@media (hover:none){.msg-actions{opacity:1}}