@import "https://fonts.googleapis.com/css2?family=Mulish:wght@300;400;500;600;700;800;900&display=swap";
:root{--bg-primary:#f9fafb;--bg-secondary:#fff;--bg-tertiary:#f3f4f6;--bg-hover:#f3f4f6;--bg-active:#eef2ff;--bg-code:#1e293b;--text-primary:#111827;--text-secondary:#4b5563;--text-muted:#9ca3af;--text-inverse:#fff;--border-color:#e5e7eb;--border-focus:#4f46e5;--border-hover:#d1d5db;--accent-primary:#4f46e5;--accent-primary-hover:#4338ca;--accent-primary-light:#eef2ff;--accent-primary-text:#4f46e5;--accent-green:#059669;--accent-green-light:#ecfdf5;--accent-green-border:#a7f3d0;--accent-red:#dc2626;--accent-amber:#f59e0b;--accent-red-light:#fef2f2;--accent-red-border:#fecaca;--accent-orange:#d97706;--accent-orange-light:#fffbeb;--accent-blue:#2563eb;--accent-blue-light:#eff6ff;--accent-purple:#7c3aed;--accent-purple-light:#f5f3ff;--accent-purple-border:#ddd6fe;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 6px -1px #0000000d,0 2px 4px -2px #0000000d;--shadow-lg:0 10px 15px -3px #0000000d,0 4px 6px -4px #0000000d;--sidebar-width:260px}[data-theme=dark]{--bg-primary:#0f172a;--bg-secondary:#1e293b;--bg-tertiary:#334155;--bg-hover:#334155;--bg-active:#312e81;--bg-code:#0f172a;--text-primary:#f1f5f9;--text-secondary:#94a3b8;--text-muted:#64748b;--text-inverse:#fff;--border-color:#334155;--border-focus:#6366f1;--border-hover:#475569;--accent-primary:#818cf8;--accent-primary-hover:#6366f1;--accent-primary-light:#6366f126;--accent-primary-text:#a5b4fc;--accent-green:#34d399;--accent-green-light:#34d3991f;--accent-green-border:#34d39940;--accent-red:#f87171;--accent-red-light:#f871711f;--accent-orange:#fbbf24;--accent-orange-light:#fbbf241f;--accent-blue:#60a5fa;--accent-blue-light:#60a5fa1f;--accent-purple:#a78bfa;--accent-purple-light:#a78bfa1f;--accent-purple-border:#a78bfa40;--shadow-sm:0 1px 2px #0000004d;--shadow-md:0 4px 6px -1px #0000004d,0 2px 4px -2px #0003;--shadow-lg:0 10px 15px -3px #00000059,0 4px 6px -4px #00000040}*{box-sizing:border-box;margin:0;padding:0}html,body{background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;height:100%;font-family:Mulish,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5}a{color:var(--accent-primary);text-decoration:none}a:hover{color:var(--accent-primary-hover)}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--border-hover)}.btn-primary{border-radius:var(--radius-md);background:var(--accent-primary);color:var(--text-inverse);cursor:pointer;border:none;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-family:inherit;font-size:.875rem;font-weight:600;transition:all .15s;display:inline-flex}.btn-primary:hover{background:var(--accent-primary-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{border-radius:var(--radius-md);background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-color);cursor:pointer;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-family:inherit;font-size:.875rem;font-weight:500;transition:all .15s;display:inline-flex}.btn-secondary:hover{background:var(--bg-hover);border-color:var(--border-hover)}.btn-secondary:disabled{opacity:.4;cursor:not-allowed}.btn-sm{padding:6px 14px;font-size:.8rem}.btn-ghost{color:var(--text-muted);cursor:pointer;border-radius:var(--radius-sm);background:0 0;border:none;padding:6px;font-family:inherit;transition:all .15s}.input-field{background:var(--bg-secondary);width:100%;color:var(--text-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);outline:none;padding:10px 14px;font-family:inherit;font-size:.875rem;transition:all .15s}.input-field:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px #4f46e51a}.input-field::placeholder{color:var(--text-muted)}.badge{border-radius:9999px;align-items:center;gap:4px;padding:3px 10px;font-size:.75rem;font-weight:500;display:inline-flex}.badge-green{background:var(--accent-green-light);color:var(--accent-green)}.badge-purple{background:var(--accent-purple-light);color:var(--accent-purple);border:1px solid var(--accent-purple-border)}.badge-blue{background:var(--accent-blue-light);color:var(--accent-blue)}.badge-red{background:var(--accent-red-light);color:var(--accent-red)}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border-color);z-index:40;flex-direction:column;height:100vh;display:flex;overflow:hidden}.sidebar-header{border-bottom:1px solid var(--border-color);padding:16px}.sidebar-conversations{flex:1;padding:8px;overflow-y:auto}.conv-item{border-radius:var(--radius-md);cursor:pointer;color:var(--text-secondary);align-items:center;gap:10px;padding:10px 12px;font-size:.84rem;transition:all .15s;display:flex;position:relative}.conv-item:hover{background:var(--bg-hover);color:var(--text-primary)}.conv-item.active{background:var(--accent-primary-light);color:var(--accent-primary)}.conv-item .conv-delete{opacity:0;border-radius:var(--radius-sm);padding:4px;transition:all .15s;position:absolute;right:8px}.sidebar-footer{border-top:1px solid var(--border-color);padding:12px}.chat-main{flex-direction:column;flex:1;min-width:0;height:100vh;display:flex}.chat-messages{flex:1;padding:8px 0;overflow-y:auto}.message-row{gap:16px;width:100%;max-width:860px;margin:0 auto;padding:16px 24px;display:flex}.message-avatar{border-radius:var(--radius-sm);flex-shrink:0;justify-content:center;align-items:center;width:30px;height:30px;font-size:.78rem;font-weight:700;display:flex}.message-avatar.user{background:var(--accent-primary);color:var(--text-inverse)}.message-avatar.ai{background:var(--accent-green);color:var(--text-inverse)}.message-content{color:var(--text-primary);flex:1;font-size:.92rem;line-height:1.7}.message-content p{margin-bottom:2px}.message-row:hover .msg-actions{opacity:1!important}.msg-actions button{justify-content:center;align-items:center;width:28px;height:28px;transition:all .15s;border-radius:var(--radius-md)!important;color:var(--text-muted)!important;gap:0!important;padding:4px!important;font-size:0!important;display:flex!important}.msg-actions button span{display:none}.msg-actions button:hover{background:var(--bg-tertiary)!important;color:var(--text-primary)!important}.msg-actions button svg{flex-shrink:0;width:14px;height:14px}.message-content p:last-child{margin-bottom:0}.message-content code{background:var(--bg-tertiary);border-radius:4px;padding:2px 6px;font-family:SF Mono,Consolas,monospace;font-size:.84rem}.message-content pre{background:var(--bg-code);color:#e2e8f0;border:1px solid var(--border-color);border-radius:var(--radius-md);margin:10px 0;padding:14px;overflow-x:auto}.message-content pre code{color:inherit;background:0 0;padding:0}.input-area{width:100%;max-width:860px;margin:0 auto;padding:12px 24px 16px}.input-container{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);align-items:flex-end;gap:8px;padding:8px 8px 8px 16px;transition:all .15s;display:flex}.input-container:focus-within{border-color:var(--border-focus);box-shadow:0 0 0 3px #4f46e51a}.input-container textarea{color:var(--text-primary);resize:none;background:0 0;border:none;outline:none;flex:1;max-height:200px;font-family:inherit;font-size:.92rem;line-height:1.5}.input-container textarea::placeholder{color:var(--text-muted)}.send-btn{border-radius:var(--radius-md);background:var(--accent-primary);width:32px;height:32px;color:var(--text-inverse);cursor:pointer;border:none;flex-shrink:0;justify-content:center;align-items:center;font-size:.85rem;transition:all .15s;display:flex}.send-btn:hover{background:var(--accent-primary-hover)}.send-btn:disabled{opacity:.4;cursor:not-allowed}.input-footer{color:var(--text-muted);justify-content:space-between;align-items:center;margin-top:8px;font-size:.75rem;display:flex}.btn-ghost{cursor:pointer;color:var(--text-muted);border-radius:var(--radius-sm);background:0 0;border:none;font-family:inherit;transition:all .15s}.btn-ghost:hover{background:var(--bg-hover);color:var(--text-primary)}.conv-item{position:relative}.conv-delete{opacity:0;flex-shrink:0;font-size:.75rem;transition:opacity .15s;padding:4px 6px!important}.conv-item:hover .conv-delete{opacity:1}.welcome-screen{color:var(--text-secondary);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:12px;display:flex}.welcome-icon{border-radius:var(--radius-xl);background:var(--accent-primary);width:56px;height:56px;color:var(--text-inverse);box-shadow:var(--shadow-md);justify-content:center;align-items:center;margin-bottom:12px;font-size:1.4rem;display:flex}.model-select{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary);border-radius:var(--radius-md);cursor:pointer;outline:none;padding:6px 12px;font-family:inherit;font-size:.82rem}.model-select:focus{border-color:var(--border-focus)}.model-select option{background:var(--bg-secondary)}.pricing-grid{grid-template-columns:repeat(4,1fr);gap:20px;max-width:1100px;margin:0 auto;padding:30px 24px;display:grid}.pricing-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);flex-direction:column;padding:28px;transition:all .2s;display:flex;position:relative}.pricing-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}.pricing-card.popular{border-color:var(--accent-primary);box-shadow:0 0 0 1px var(--accent-primary),var(--shadow-md)}.pricing-card.popular:before{content:"Popular";background:var(--accent-primary);color:var(--text-inverse);border-radius:9999px;padding:3px 14px;font-size:.72rem;font-weight:700;position:absolute;top:-10px;left:50%;transform:translate(-50%)}.pricing-price{margin:16px 0 4px;font-size:2.2rem;font-weight:800}.pricing-price span{color:var(--text-secondary);font-size:.85rem;font-weight:400}.pricing-features{flex:1;margin:20px 0;list-style:none}.pricing-features li{color:var(--text-secondary);align-items:center;gap:8px;padding:6px 0;font-size:.84rem;display:flex}.pricing-features li:before{content:"✓";color:var(--accent-green);font-size:.8rem;font-weight:700}.auth-page{background:var(--bg-primary);justify-content:center;align-items:center;min-height:100vh;display:flex}.auth-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-xl);width:100%;max-width:420px;box-shadow:var(--shadow-lg);padding:36px}.loading-dots{gap:4px;padding:8px 0;display:flex}.loading-dots span{background:var(--text-muted);border-radius:50%;width:8px;height:8px;animation:1.4s infinite dotPulse}.loading-dots span:nth-child(2){animation-delay:.2s}.loading-dots span:nth-child(3){animation-delay:.4s}.gradient-text{background:linear-gradient(135deg,var(--accent-primary),var(--accent-purple));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes dotPulse{0%,80%,to{opacity:.3;transform:scale(.8)}40%{opacity:1;transform:scale(1)}}.animate-in{animation:.3s forwards fadeIn}