@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;--bg-app:#0f1219;--bg-sidebar:#131720;--bg-surface:#1d202b;--bg-surface-hover:#252a37;--bg-surface-active:#2d3343;--primary:#735af2;--primary-hover:#8771f4;--primary-glow:#735af226;--accent-cyan:#13ecec;--text-primary:#f8fafc;--text-secondary:#94a3b8;--text-muted:#627084;--border-color:#272b35;--border-color-hover:#363b49;--shadow-sm:0 1px 2px 0 #00000080;--shadow-md:0 4px 6px -1px #00000080, 0 2px 4px -1px #00000080;--shadow-lg:0 10px 15px -3px #000000b3, 0 4px 6px -2px #000000b3;--sidebar-width:280px;--transition-smooth:all .25s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-app);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;height:100vh;overflow:hidden}#root{height:100%}.app-container{width:100vw;height:100vh;display:flex;position:relative;overflow:hidden}.sidebar{width:var(--sidebar-width);background-color:var(--bg-sidebar);border-right:1px solid var(--border-color);height:100%;transition:var(--transition-smooth);z-index:10;flex-direction:column;display:flex}.sidebar-header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:20px;display:flex}.app-title{letter-spacing:-.5px;background:linear-gradient(135deg, var(--text-primary) 30%, var(--accent-cyan) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;align-items:center;gap:8px;font-size:1.15rem;font-weight:700;display:flex}.new-chat-btn{background:linear-gradient(135deg, var(--primary) 0%, #8b47eb 100%);color:var(--text-primary);font-family:var(--font-sans);cursor:pointer;box-shadow:0 4px 12px var(--primary-glow);transition:var(--transition-smooth);border:none;border-radius:12px;justify-content:center;align-items:center;gap:8px;margin:16px;padding:12px 16px;font-size:.9rem;font-weight:600;display:flex}.new-chat-btn:hover{filter:brightness(1.1);transform:translateY(-1px);box-shadow:0 6px 16px #735af240}.new-chat-btn:active{transform:translateY(0)}.chat-history-list{flex-direction:column;flex:1;gap:4px;padding:0 12px;display:flex;overflow-y:auto}.chat-history-item{cursor:pointer;transition:var(--transition-smooth);color:var(--text-secondary);border:1px solid #0000;border-radius:10px;align-items:center;gap:12px;padding:12px;font-size:.875rem;text-decoration:none;display:flex;position:relative}.chat-history-item:hover{background-color:var(--bg-surface-hover);color:var(--text-primary)}.chat-history-item.active{background-color:var(--bg-surface);color:var(--text-primary);border-color:var(--border-color);box-shadow:var(--shadow-sm)}.chat-history-item.active:before{content:"";background-color:var(--primary);border-radius:0 4px 4px 0;width:4px;height:70%;position:absolute;top:15%;left:0}.chat-item-title{white-space:nowrap;text-overflow:ellipsis;flex:1;font-weight:500;overflow:hidden}.delete-chat-btn{color:var(--text-muted);cursor:pointer;transition:var(--transition-smooth);background:0 0;border:none;border-radius:4px;justify-content:center;align-items:center;padding:4px;display:none}.chat-history-item:hover .delete-chat-btn{display:flex}.delete-chat-btn:hover{color:#f25a5a;background-color:#f25a5a1a}.sidebar-footer{border-top:1px solid var(--border-color);align-items:center;gap:12px;padding:16px;display:flex}.user-profile{align-items:center;gap:12px;width:100%;display:flex}.user-avatar{background:linear-gradient(135deg, var(--accent-cyan) 0%, var(--primary) 100%);width:36px;height:36px;color:var(--bg-app);border-radius:50%;justify-content:center;align-items:center;font-size:.9rem;font-weight:700;display:flex}.user-info{flex-direction:column;display:flex;overflow:hidden}.user-name{color:var(--text-primary);font-size:.875rem;font-weight:600}.user-status{color:var(--text-muted);font-size:.75rem}.main-chat{background-color:var(--bg-app);flex-direction:column;flex:1;height:100%;display:flex;position:relative}.chat-header{border-bottom:1px solid var(--border-color);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:5;background-color:#0f1219cc;justify-content:space-between;align-items:center;height:70px;padding:0 24px;display:flex}.chat-header-info{align-items:center;gap:12px;display:flex}.mobile-menu-btn{color:var(--text-primary);cursor:pointer;background:0 0;border:none;margin-right:8px;padding:4px;font-size:1.5rem;display:none}.active-chat-avatar{object-fit:cover;border:1.5px solid var(--accent-cyan);border-radius:50%;width:32px;height:32px}.active-chat-title{font-size:.95rem;font-weight:600}.active-chat-status{color:var(--text-secondary);align-items:center;gap:6px;font-size:.75rem;display:flex}.status-dot{background-color:#1ae65e;border-radius:50%;width:8px;height:8px;display:inline-block;box-shadow:0 0 8px #1ae65e}.chat-actions{gap:8px;display:flex}.header-action-btn{border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;width:36px;height:36px;transition:var(--transition-smooth);background:0 0;border-radius:10px;justify-content:center;align-items:center;display:flex}.header-action-btn:hover{background-color:var(--bg-surface-hover);color:var(--text-primary);border-color:var(--border-color-hover)}.messages-container{flex-direction:column;flex:1;gap:20px;padding:24px;display:flex;overflow-y:auto}.message-wrapper{gap:16px;max-width:80%;animation:.3s ease-out forwards fadeIn;display:flex}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.message-wrapper.user{flex-direction:row-reverse;align-self:flex-end}.message-wrapper.assistant{align-self:flex-start}.msg-avatar{object-fit:cover;border-radius:50%;flex-shrink:0;width:36px;height:36px}.msg-avatar-fallback{background:linear-gradient(135deg, var(--primary) 0%, #8b47eb 100%);width:36px;height:36px;color:var(--text-primary);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:.85rem;font-weight:700;display:flex}.message-content-area{flex-direction:column;gap:6px;display:flex}.message-bubble{word-break:break-word;box-shadow:var(--shadow-sm);border-radius:16px;padding:14px 18px;font-size:.95rem;line-height:1.5}.message-wrapper.user .message-bubble{background:linear-gradient(135deg, var(--primary) 0%, #8744e4 100%);color:var(--text-primary);border-bottom-right-radius:4px}.message-wrapper.assistant .message-bubble{background-color:var(--bg-surface);color:var(--text-primary);border:1px solid var(--border-color);border-bottom-left-radius:4px}.message-time{color:var(--text-muted);align-self:flex-end;font-size:.72rem}.message-wrapper.user .message-time{align-self:flex-end}.chat-input-container{background-color:var(--bg-app);padding:16px 24px 24px}.chat-input-form{background-color:var(--bg-surface);border:1px solid var(--border-color);box-shadow:var(--shadow-md);transition:var(--transition-smooth);border-radius:16px;align-items:flex-end;gap:12px;padding:8px 12px;display:flex}.chat-input-form:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}.chat-textarea{color:var(--text-primary);font-family:var(--font-sans);resize:none;background:0 0;border:none;outline:none;flex:1;min-height:24px;max-height:200px;padding:8px 4px;font-size:.95rem;line-height:1.5}.chat-textarea::placeholder{color:var(--text-muted)}.input-actions{align-items:center;gap:8px;padding-bottom:2px;display:flex}.input-action-btn{color:var(--text-secondary);cursor:pointer;width:36px;height:36px;transition:var(--transition-smooth);background:0 0;border:none;border-radius:10px;justify-content:center;align-items:center;display:flex}.input-action-btn:hover{color:var(--text-primary);background-color:var(--bg-surface-hover)}.send-btn{background-color:var(--primary);color:var(--text-primary)}.send-btn:hover{background-color:var(--primary-hover);transform:scale(1.05)}.send-btn:disabled{background-color:var(--bg-surface-hover);color:var(--text-muted);cursor:not-allowed;transform:none}.input-footer-text{color:var(--text-muted);text-align:center;margin-top:8px;font-size:.72rem}.welcome-container{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;max-width:720px;margin:0 auto;padding:40px;animation:.4s ease-out fadeIn;display:flex}.welcome-logo{background:linear-gradient(135deg, var(--accent-cyan) 0%, var(--primary) 100%);border-radius:24px;justify-content:center;align-items:center;width:90px;height:90px;margin-bottom:24px;font-size:2.5rem;font-weight:800;display:flex;position:relative;box-shadow:0 10px 25px #735af240}.welcome-logo:after{content:"";background:linear-gradient(135deg, var(--accent-cyan) 0%, var(--primary) 100%);z-index:-1;opacity:.5;filter:blur(8px);border-radius:26px;position:absolute;inset:-2px}.welcome-title{letter-spacing:-.75px;background:linear-gradient(135deg, var(--text-primary) 40%, var(--accent-cyan) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:12px;font-size:2.25rem;font-weight:800}.welcome-subtitle{color:var(--text-secondary);margin-bottom:40px;font-size:1.05rem;line-height:1.6}.suggestions-grid{grid-template-columns:repeat(2,1fr);gap:16px;width:100%;max-width:600px;display:grid}.suggestion-card{background-color:var(--bg-surface);border:1px solid var(--border-color);text-align:left;cursor:pointer;transition:var(--transition-smooth);border-radius:12px;padding:16px}.suggestion-card:hover{background-color:var(--bg-surface-hover);border-color:var(--border-color-hover);transform:translateY(-2px)}.suggestion-header{color:var(--text-primary);margin-bottom:4px;font-size:.9rem;font-weight:600}.suggestion-text{color:var(--text-secondary);font-size:.8rem}.loading-bubble{background-color:var(--bg-surface);border:1px solid var(--border-color);border-radius:16px 16px 16px 4px;align-items:center;gap:4px;width:fit-content;padding:14px 18px;display:flex}.dot{background-color:var(--text-secondary);border-radius:50%;width:6px;height:6px;animation:1.4s ease-in-out infinite both bounce}.dot:first-child{animation-delay:-.32s}.dot:nth-child(2){animation-delay:-.16s}@keyframes bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.sidebar-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:8;background-color:#0009;display:none;position:absolute;inset:0}@media (width<=768px){.sidebar{position:absolute;top:0;bottom:0;left:-100%}.sidebar.open{left:0}.sidebar-overlay.show,.mobile-menu-btn{display:block}.suggestions-grid{grid-template-columns:1fr}.message-wrapper{max-width:90%}}