:root{--bg: #07080d;--bg-mesh-1: rgba(251, 191, 36, .06);--bg-mesh-2: rgba(34, 211, 238, .05);--surface: #111318;--surface-2: #181b24;--surface-glass: rgba(17, 19, 24, .82);--hover: #22262f;--border: rgba(255, 255, 255, .07);--border-strong: rgba(255, 255, 255, .12);--text: #f4f4f5;--text-muted: #8b8f9a;--text-dim: #5c6170;--accent: #f59e0b;--accent-2: #22d3ee;--accent-soft: rgba(245, 158, 11, .14);--accent-glow: rgba(245, 158, 11, .35);--ai-soft: rgba(34, 211, 238, .12);--danger: #fb7185;--success: #4ade80;--font: "DM Sans", system-ui, sans-serif;--mono: "JetBrains Mono", ui-monospace, monospace;--sidebar-w: 300px;--topbar-h: 56px;--radius: 14px;--radius-sm: 10px;--shadow: 0 24px 48px rgba(0, 0, 0, .45)}*{box-sizing:border-box}html{height:100%;height:-webkit-fill-available}html.menu-open,html.modal-open{overflow:hidden}html,body,#root{margin:0;height:100%}body{font-family:var(--font);background:var(--bg);color:var(--text);overscroll-behavior:none;-webkit-text-size-adjust:100%}button,input,select,textarea{font:inherit;-webkit-tap-highlight-color:transparent}.app-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;height:100dvh;color:var(--text-muted)}.loader-ring{width:36px;height:36px;border-radius:50%;border:2px solid var(--border);border-top-color:var(--accent);animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.login-screen{position:relative;min-height:100dvh;display:grid;place-items:center;padding:24px;padding-bottom:max(24px,env(safe-area-inset-bottom));overflow:hidden}.login-bg{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse 80% 50% at 20% 10%,var(--bg-mesh-1),transparent 55%),radial-gradient(ellipse 60% 40% at 85% 80%,var(--bg-mesh-2),transparent 50%),var(--bg);pointer-events:none}.login-bg:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");opacity:.4}.login-card{position:relative;width:100%;max-width:400px;background:var(--surface-glass);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border-strong);border-radius:20px;padding:32px 28px;box-shadow:var(--shadow)}.login-brand-row{display:flex;align-items:center;gap:14px;margin-bottom:28px}.login-logo{display:grid;place-items:center;width:48px;height:48px;border-radius:14px;background:linear-gradient(135deg,var(--accent-soft),var(--ai-soft));border:1px solid var(--border)}.login-brand{font-size:1.35rem;font-weight:700;letter-spacing:-.03em}.login-sub{margin:2px 0 0;color:var(--text-muted);font-size:.85rem}.login-form label{display:block;margin-bottom:16px;font-size:.78rem;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em}.login-form input{display:block;width:100%;margin-top:8px;padding:12px 14px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg);color:var(--text);text-transform:none;letter-spacing:normal;font-size:1rem;transition:border-color .15s,box-shadow .15s}.login-form input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.btn-primary{width:100%;margin-top:8px;padding:13px;border:none;border-radius:var(--radius-sm);background:linear-gradient(135deg,#f59e0b,#d97706);color:#0c0a09;font-weight:600;cursor:pointer;transition:transform .12s,filter .12s}.btn-primary:hover:not(:disabled){filter:brightness(1.06)}.btn-primary:active:not(:disabled){transform:scale(.98)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.login-switch{width:100%;margin-top:14px;background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:.85rem}.login-switch:hover{color:var(--text)}.login-error{color:var(--danger);font-size:.85rem;margin:8px 0}.login-info{color:var(--success);font-size:.85rem;margin:8px 0}.app-root{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;overflow:hidden;background:var(--bg)}.app-root:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse 70% 45% at 100% 0%,var(--bg-mesh-1),transparent 50%),radial-gradient(ellipse 50% 35% at 0% 100%,var(--bg-mesh-2),transparent 45%);pointer-events:none;z-index:0}.chat-pane{position:relative;z-index:1;flex:1;display:flex;flex-direction:column;min-width:0;min-height:0;width:100%}.side-scrim{position:fixed;top:0;right:0;bottom:0;left:0;z-index:900;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);opacity:0;pointer-events:none;transition:opacity .22s ease}.side-scrim--visible{opacity:1;pointer-events:auto}.side-nav{position:fixed;z-index:910;top:0;left:0;bottom:0;width:min(var(--sidebar-w),92vw);display:flex;flex-direction:column;background:var(--surface);border-right:1px solid var(--border);transform:translate(-102%);transition:transform .26s cubic-bezier(.22,1,.36,1);pointer-events:none}.side-nav--open{transform:translate(0);pointer-events:auto}.side-nav-head{flex-shrink:0;padding:max(14px,env(safe-area-inset-top)) 14px 12px;border-bottom:1px solid var(--border)}.side-nav-top{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:14px}.brand-lockup{display:flex;align-items:center;gap:10px}.brand-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--accent-soft),var(--ai-soft));border:1px solid var(--border)}.side-nav-brand{font-weight:700;font-size:1.05rem;letter-spacing:-.02em}.side-nav-tag{font-size:.72rem;color:var(--text-dim);margin-top:1px}.side-nav-close{display:grid}.main-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:12px}.nav-item{display:flex;align-items:center;gap:10px;width:100%;padding:9px 10px;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--text-muted);cursor:pointer;font-size:.9rem;text-align:left;transition:background .12s,color .12s}.nav-item svg{flex-shrink:0;opacity:.85}.nav-item:hover{background:var(--hover);color:var(--text)}.nav-item--active{background:var(--accent-soft);color:var(--text);font-weight:500}.nav-item--active svg{color:var(--accent);opacity:1}.nav-item--soon{opacity:.75}.nav-item--compact{padding:8px 10px;font-size:.84rem}.nav-badge{margin-left:auto;font-size:.65rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;padding:2px 6px;border-radius:6px;background:var(--hover);color:var(--text-dim)}.btn-new{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:11px;border-radius:var(--radius-sm);border:none;background:linear-gradient(135deg,#f59e0b33,#22d3ee1f);color:var(--text);font-weight:600;cursor:pointer;transition:filter .12s}.btn-new:hover{filter:brightness(1.08)}.session-block{flex:1;min-height:0;display:flex;flex-direction:column;padding:8px 0}.session-block-label{padding:8px 16px 6px;font-size:.68rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim)}.session-list{flex:1;min-height:0;overflow-y:auto;padding:0 8px;-webkit-overflow-scrolling:touch}.session-empty{padding:12px 10px;font-size:.82rem;color:var(--text-muted);line-height:1.45}.session-item{display:flex;align-items:center;gap:2px;border-radius:var(--radius-sm);margin-bottom:2px}.session-item--active{background:var(--accent-soft)}.session-title{flex:1;display:flex;align-items:center;gap:6px;min-width:0;text-align:left;padding:9px 10px;border:none;background:transparent;color:var(--text);cursor:pointer;font-size:.84rem}.session-title-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.session-delete{flex-shrink:0;border:none;background:transparent;color:var(--text-dim);cursor:pointer;padding:6px 8px;border-radius:8px;opacity:0;transition:opacity .12s,color .12s,background .12s}.session-item:hover .session-delete,.session-item:focus-within .session-delete{opacity:1}.session-delete:hover{color:var(--danger);background:#fb71851f}.session-delete svg{width:14px;height:14px}.side-nav-foot{flex-shrink:0;padding:10px 10px max(12px,env(safe-area-inset-bottom));border-top:1px solid var(--border)}.footer-nav{display:flex;flex-direction:column;gap:1px;margin-bottom:10px}.user-card{display:flex;align-items:center;gap:10px;padding:10px;border-radius:var(--radius-sm);background:var(--surface-2);border:1px solid var(--border)}.user-avatar{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;font-weight:700;font-size:.9rem;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#0c0a09}.user-meta{flex:1;min-width:0;display:flex;flex-direction:column}.user-email{font-size:.8rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-plan{font-size:.7rem;color:var(--text-dim)}.user-logout{border:none;background:transparent;color:var(--text-muted);cursor:pointer;padding:6px;border-radius:8px}.user-logout:hover{color:var(--danger);background:#fb71851a}.chat-topbar{flex-shrink:0;display:flex;align-items:center;gap:10px;min-height:var(--topbar-h);padding:env(safe-area-inset-top) 12px 0;border-bottom:1px solid var(--border);background:var(--surface-glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}.chat-topbar-title{flex:1;min-width:0;display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px}.chat-topbar-sub{font-size:.95rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}.model-pill{font-size:.68rem;font-weight:600;padding:3px 8px;border-radius:999px;background:var(--ai-soft);color:var(--accent-2);border:1px solid rgba(34,211,238,.2)}.chat-topbar-busy{font-size:.75rem;color:var(--accent);animation:pulse-text 1.4s ease infinite}@keyframes pulse-text{0%,to{opacity:1}50%{opacity:.45}}.icon-btn{flex-shrink:0;width:40px;height:40px;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--text);cursor:pointer;display:grid;place-items:center}.icon-btn:hover{background:var(--hover)}.icon-btn--menu{display:grid}.icon-btn--accent{background:var(--accent-soft);color:var(--accent)}.icon-btn--accent:hover{background:#f59e0b38}.chat-scroll{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;padding:20px 16px 12px}.chat-welcome{max-width:640px;margin:8vh auto 0;padding:0 8px}.welcome-hero{text-align:center;margin-bottom:28px}.welcome-icon{display:inline-grid;place-items:center;width:56px;height:56px;margin-bottom:16px;border-radius:16px;background:linear-gradient(135deg,var(--accent-soft),var(--ai-soft));border:1px solid var(--border)}.chat-welcome h1{font-size:1.75rem;font-weight:700;letter-spacing:-.03em;margin:0 0 10px}.chat-welcome p{color:var(--text-muted);line-height:1.55;font-size:.95rem;margin:0}.prompt-grid{display:grid;grid-template-columns:1fr;gap:10px}@media (min-width: 560px){.prompt-grid{grid-template-columns:1fr 1fr}}.prompt-chip{text-align:left;padding:14px 16px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;font-size:.88rem;line-height:1.4;transition:border-color .15s,background .15s,transform .12s}.prompt-chip:hover{border-color:#f59e0b59;background:var(--surface-2);transform:translateY(-1px)}.msg{display:flex;gap:12px;margin-bottom:20px;max-width:820px}.msg--user{flex-direction:row-reverse;margin-left:auto}.msg-avatar{flex-shrink:0;width:32px;height:32px;border-radius:10px;display:grid;place-items:center;font-size:.75rem;font-weight:700;margin-top:4px}.msg-avatar--user{background:linear-gradient(135deg,#f59e0b,#d97706);color:#0c0a09}.msg-avatar--assistant{background:var(--ai-soft);color:var(--accent-2);border:1px solid rgba(34,211,238,.25);font-size:.65rem}.msg-bubble{position:relative;flex:1;min-width:0;max-width:min(720px,100%);padding:14px 16px;border-radius:var(--radius);line-height:1.6;font-size:.94rem}.msg-bubble:hover .msg-actions,.msg-bubble:focus-within .msg-actions{opacity:1}.msg-actions{position:absolute;top:8px;right:8px;display:flex;gap:4px;opacity:0;transition:opacity .15s}.msg-action-btn{border:none;padding:4px 8px;border-radius:6px;cursor:pointer;font-size:.68rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;background:var(--hover);color:var(--text-muted)}.msg-action-btn:hover{color:var(--text)}.msg-action-btn--danger:hover{background:#fb718533;color:var(--danger)}.msg-edit-input{width:100%;min-height:88px;resize:vertical;border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 12px;background:var(--bg);color:inherit;font:inherit}.msg-edit-actions{display:flex;gap:8px;margin-top:10px}.msg-edit-save,.msg-edit-cancel{border:none;border-radius:8px;padding:8px 14px;cursor:pointer;font-size:.85rem;font-weight:500}.msg-edit-save{background:var(--accent);color:#0c0a09;font-weight:600}.msg-edit-cancel{background:var(--hover);color:var(--text)}.msg-text{white-space:pre-wrap;word-break:break-word}.msg--user .msg-bubble{background:linear-gradient(145deg,#f59e0b38,#d9770626);border:1px solid rgba(245,158,11,.25);border-bottom-right-radius:4px}.msg--assistant .msg-bubble{background:var(--surface);border:1px solid var(--border);border-bottom-left-radius:4px}.msg-attachments{display:flex;flex-direction:column;gap:8px;margin-bottom:10px}.msg-image{max-width:100%;max-height:260px;border-radius:var(--radius-sm);object-fit:contain}.msg-file{padding:10px 12px;border-radius:var(--radius-sm);background:var(--bg);border:1px solid var(--border);font-size:.82rem}.msg-file-name{font-weight:600;display:block;margin-bottom:6px}.msg-file-preview{margin:0;white-space:pre-wrap;word-break:break-word;font-family:var(--mono);font-size:.74rem;opacity:.9;max-height:120px;overflow:hidden}.msg-bubble--stream{border-color:#22d3ee4d;white-space:pre-wrap;word-break:break-word}.msg-bubble--typing{display:flex;gap:6px;padding:16px 20px}.msg-bubble--typing span{width:8px;height:8px;border-radius:50%;background:var(--accent-2);animation:pulse-dot 1.2s infinite ease-in-out}.msg-bubble--typing span:nth-child(2){animation-delay:.15s}.msg-bubble--typing span:nth-child(3){animation-delay:.3s}@keyframes pulse-dot{0%,80%,to{opacity:.25;transform:scale(.85)}40%{opacity:1;transform:scale(1)}}.session-busy-dot{flex-shrink:0;width:7px;height:7px;border-radius:50%;background:var(--accent-2);animation:pulse-dot 1.2s infinite}.chat-error{flex-shrink:0;margin:0 14px 8px;padding:12px 14px;border-radius:var(--radius-sm);background:#fb71851a;border:1px solid rgba(251,113,133,.2);color:var(--danger);font-size:.85rem;line-height:1.45}.composer-wrap{flex-shrink:0;padding:0 12px max(10px,env(safe-area-inset-bottom))}.composer-box{border:1px solid var(--border-strong);border-radius:18px;background:var(--surface-glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);overflow:hidden;box-shadow:0 -8px 32px #0003}.composer-attachments{display:flex;flex-wrap:wrap;gap:8px;padding:10px 12px 0}.attach-chip{display:flex;align-items:center;gap:8px;max-width:100%;padding:5px 10px 5px 5px;border-radius:var(--radius-sm);background:var(--bg);border:1px solid var(--border);font-size:.75rem}.attach-chip-thumb{width:30px;height:30px;border-radius:6px;object-fit:cover}.attach-chip-icon{font-size:.9rem}.attach-chip-name{max-width:140px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.attach-chip-size{color:var(--text-dim);flex-shrink:0}.attach-chip-remove{border:none;background:transparent;color:var(--text-muted);cursor:pointer;font-size:1.1rem;line-height:1;padding:0 4px}.attach-chip-remove:hover{color:var(--danger)}.composer-input{display:block;width:100%;resize:none;min-height:48px;max-height:160px;padding:14px 16px 8px;border:none;background:transparent;color:var(--text);outline:none;line-height:1.5}.composer-input::placeholder{color:var(--text-dim)}.composer-bar{display:flex;align-items:flex-end;gap:8px;padding:8px 10px 10px;border-top:1px solid var(--border)}.composer-tools{display:flex;gap:4px}.tool-btn{flex-shrink:0;width:38px;height:38px;border:none;border-radius:var(--radius-sm);background:var(--surface-2);color:var(--text-muted);cursor:pointer;display:grid;place-items:center;transition:background .12s,color .12s}.tool-btn:hover:not(:disabled){background:var(--hover);color:var(--text)}.tool-btn:disabled{opacity:.35;cursor:not-allowed}.tool-btn--soon{opacity:.55}.composer-file-input{display:none}.composer-model-wrap{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}.composer-model{width:100%;padding:8px 30px 8px 12px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface-2);color:var(--text);font-size:.8rem;font-weight:500;cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238b8f9a' viewBox='0 0 16 16'%3E%3Cpath d='M4.646 6.646a.5.5 0 0 1 .708 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0;font-size:.68rem;color:var(--text-dim);text-align:center}.modal-root{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;display:grid;place-items:center;padding:16px}.modal-scrim{position:absolute;top:0;right:0;bottom:0;left:0;border:none;background:#000000a6;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);cursor:pointer}.modal-panel{position:relative;width:100%;max-width:440px;max-height:min(85dvh,640px);display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border-strong);border-radius:20px;box-shadow:var(--shadow);overflow:hidden}.modal-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--border)}.modal-head h2{margin:0;font-size:1.1rem;font-weight:700}.modal-body{flex:1;overflow-y:auto;padding:8px 12px 16px}.settings-section{margin-bottom:16px}.settings-section h3{margin:12px 8px 8px;font-size:.68rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim)}.settings-list{list-style:none;margin:0;padding:0}.settings-row{display:flex;align-items:center;justify-content:space-between;width:100%;padding:12px 14px;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--text);cursor:not-allowed;font-size:.9rem;text-align:left}.settings-row-hint{font-size:.8rem;color:var(--text-dim)}.modal-foot{padding:12px 20px 16px;border-top:1px solid var(--border)}.modal-version{font-size:.72rem;color:var(--text-dim)}.toast{position:fixed;bottom:max(24px,env(safe-area-inset-bottom));left:50%;transform:translate(-50%);z-index:1100;padding:12px 20px;border-radius:999px;background:var(--surface-2);border:1px solid var(--border-strong);color:var(--text);font-size:.88rem;box-shadow:var(--shadow);animation:toast-in .25s ease}@keyframes toast-in{0%{opacity:0;transform:translate(-50%) translateY(12px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@media (min-width: 900px){.app-root{position:static;height:100dvh;display:grid;grid-template-columns:var(--sidebar-w) 1fr}.side-scrim{display:none}.side-nav{position:static;transform:none;pointer-events:auto;width:auto;z-index:1}.side-nav-close,.icon-btn--menu{display:none}.composer-model-hint{display:block}.chat-scroll{padding:28px 32px 16px}.msg{max-width:900px;margin-left:auto;margin-right:auto}.msg--user{margin-left:auto;margin-right:0}.composer-wrap{max-width:900px;margin:0 auto;width:100%;padding-left:24px;padding-right:24px}}