@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";
:root{--bg-primary:#0a0a1a;--bg-secondary:#111128;--bg-card:#ffffff0a;--bg-card-hover:#ffffff14;--border:#ffffff14;--border-focus:#6366f180;--text-primary:#e2e8f0;--text-secondary:#94a3b8;--text-muted:#64748b;--accent:#6366f1;--accent-glow:#6366f140;--accent-hover:#818cf8;--success:#10b981;--danger:#ef4444;--warning:#f59e0b;--gradient-start:#6366f1;--gradient-end:#8b5cf6;--shadow-glow:0 0 20px #6366f126;--radius:12px;--radius-sm:8px;--transition:.2s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}html,body{background:var(--bg-primary);height:100%;color:var(--text-primary);-webkit-font-smoothing:antialiased;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif}.app-layout{height:100vh;display:flex;overflow:hidden}.sidebar{background:var(--bg-secondary);border-right:1px solid var(--border);width:280px;transition:width var(--transition);flex-direction:column;display:flex}.sidebar-header{border-bottom:1px solid var(--border);padding:20px}.sidebar-logo{background:linear-gradient(135deg, var(--gradient-start), var(--gradient-end));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:1.25rem;font-weight:700}.sidebar-nav{flex:1;padding:12px;overflow-y:auto}.nav-item{border-radius:var(--radius-sm);color:var(--text-secondary);transition:all var(--transition);cursor:pointer;align-items:center;gap:12px;padding:10px 14px;font-size:.875rem;font-weight:500;text-decoration:none;display:flex}.nav-item:hover{background:var(--bg-card-hover);color:var(--text-primary)}.nav-item.active{background:var(--accent-glow);color:var(--accent-hover)}.main-content{flex-direction:column;flex:1;display:flex;overflow:hidden}.auth-container{background:radial-gradient(ellipse at 50% 0%, #6366f11f 0%, transparent 60%), var(--bg-primary);justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.auth-card{background:var(--bg-card);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius);width:100%;max-width:420px;box-shadow:var(--shadow-glow);padding:40px 32px}.auth-title{text-align:center;background:linear-gradient(135deg, var(--gradient-start), var(--gradient-end));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:8px;font-size:1.5rem;font-weight:700}.auth-subtitle{text-align:center;color:var(--text-secondary);margin-bottom:32px;font-size:.875rem}.form-group{margin-bottom:20px}.form-label{color:var(--text-secondary);margin-bottom:6px;font-size:.8125rem;font-weight:500;display:block}.form-input{width:100%;color:var(--text-primary);background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-sm);transition:border-color var(--transition), box-shadow var(--transition);outline:none;padding:10px 14px;font-family:inherit;font-size:.875rem}.form-input:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px var(--accent-glow)}.form-input::placeholder{color:var(--text-muted)}.btn{border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition);border:none;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-family:inherit;font-size:.875rem;font-weight:600;display:inline-flex}.btn-primary{background:linear-gradient(135deg, var(--gradient-start), var(--gradient-end));color:#fff;width:100%;box-shadow:0 2px 12px var(--accent-glow)}.btn-primary:hover{box-shadow:0 4px 20px var(--accent-glow);transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-ghost{color:var(--text-secondary);background:0 0;padding:8px 12px}.btn-ghost:hover{color:var(--text-primary);background:var(--bg-card-hover)}.btn-danger{background:var(--danger);color:#fff}.chat-container{flex-direction:column;flex:1;display:flex;overflow:hidden}.chat-header{border-bottom:1px solid var(--border);background:var(--bg-secondary);justify-content:space-between;align-items:center;padding:16px 24px;display:flex}.chat-header-title{font-size:1rem;font-weight:600}.chat-messages{flex-direction:column;flex:1;gap:16px;padding:24px;display:flex;overflow-y:auto}.message{border-radius:var(--radius);max-width:75%;padding:12px 16px;font-size:.875rem;line-height:1.6;animation:.3s ease-out messageIn}@keyframes messageIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.message-user{background:linear-gradient(135deg, var(--gradient-start), var(--gradient-end));color:#fff;border-bottom-right-radius:4px;align-self:flex-end}.message-assistant{background:var(--bg-card);border:1px solid var(--border);border-bottom-left-radius:4px;align-self:flex-start}.chat-input-area{border-top:1px solid var(--border);background:var(--bg-secondary);padding:16px 24px}.chat-input-wrapper{align-items:center;gap:12px;display:flex}.chat-input{color:var(--text-primary);background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius);resize:none;transition:border-color var(--transition);outline:none;flex:1;padding:12px 16px;font-family:inherit;font-size:.875rem}.chat-input:focus{border-color:var(--border-focus)}.chat-send-btn{background:linear-gradient(135deg, var(--gradient-start), var(--gradient-end));color:#fff;cursor:pointer;width:44px;height:44px;transition:all var(--transition);border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:1.125rem;display:flex}.chat-send-btn:hover{box-shadow:0 0 16px var(--accent-glow);transform:scale(1.05)}.model-select{color:var(--text-secondary);background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;outline:none;padding:6px 10px;font-family:inherit;font-size:.75rem}.credits-badge{color:var(--success);background:#10b9811a;border:1px solid #10b98133;border-radius:20px;align-items:center;gap:6px;padding:6px 12px;font-size:.75rem;font-weight:600;display:flex}.loading-dots{gap:4px;display:inline-flex}.loading-dots span{background:var(--accent);border-radius:50%;width:6px;height:6px;animation:1.4s ease-in-out infinite both bounce}.loading-dots span:first-child{animation-delay:-.32s}.loading-dots span:nth-child(2){animation-delay:-.16s}@keyframes bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.error-text{color:var(--danger);text-align:center;margin-top:8px;font-size:.8125rem}.link{color:var(--accent);transition:color var(--transition);font-weight:500;text-decoration:none}.link:hover{color:var(--accent-hover)}.text-center{text-align:center}.mt-4{margin-top:16px}.text-sm{font-size:.8125rem}.text-muted{color:var(--text-secondary)}@media (max-width:768px){.sidebar{display:none}.message{max-width:90%}.auth-card{padding:28px 20px}}