:root{--bg-dark:#131314;--bg-sidebar:#1e1e1f;--bg-card:transparent;--bg-input:#1e1e1f;--bg-input-hover:#28292a;--border-color:#ffffff14;--border-focus:#4285f4;--nvidia-green:#76b900;--text-main:#e3e3e3;--text-muted:#9e9e9e;--text-dim:#6c6c6c;--radius-pill:28px;--radius-md:16px;--radius-sm:8px;--font-sans:"Inter", system-ui, -apple-system, sans-serif;--font-mono:"JetBrains Mono", monospace}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-dark);color:var(--text-main);font-family:var(--font-sans);min-height:100vh;overflow:hidden}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#ffffff26;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#ffffff4d}.app-container{background-color:var(--bg-dark);width:100vw;height:100vh;display:flex;overflow:hidden}.sidebar{background:var(--bg-sidebar);z-index:20;border-right:1px solid var(--border-color);flex-direction:column;width:260px;padding:16px 12px;display:flex}.sidebar-header{align-items:center;gap:10px;padding:8px 12px 20px;display:flex}.logo-badge{color:#fff;border-radius:var(--radius-sm);background:linear-gradient(135deg,#4285f4,#a855f7);padding:4px 8px;font-size:.95rem;font-weight:800}.brand-title{color:#f3f3f3;font-size:1.05rem;font-weight:600}.new-chat-btn{color:#e3e3e3;border-radius:var(--radius-pill);cursor:pointer;background:#1a1a1c;border:1px solid #ffffff1a;align-items:center;gap:10px;margin-bottom:20px;padding:10px 16px;font-size:.9rem;font-weight:500;transition:all .2s;display:flex}.new-chat-btn:hover{background:#28292a}.nav-section{flex:1;overflow-y:auto}.category-title{text-transform:uppercase;letter-spacing:.8px;color:var(--text-dim);padding:0 12px 8px;font-size:.72rem;font-weight:600}.nav-item{border-radius:var(--radius-pill);color:var(--text-muted);cursor:pointer;align-items:center;gap:12px;margin-bottom:4px;padding:10px 12px;font-size:.88rem;transition:all .2s;display:flex}.nav-item:hover{color:var(--text-main);background:#ffffff0f}.nav-item.active{color:#60a5fa;background:#4285f426;font-weight:500}.main-content{background:var(--bg-dark);flex-direction:column;flex:1;display:flex;position:relative;overflow:hidden}.top-bar{justify-content:space-between;align-items:center;height:56px;padding:0 24px;display:flex}.top-title{color:var(--text-muted);font-size:1rem;font-weight:600}.model-pill-selector{color:var(--text-main);border-radius:var(--radius-pill);cursor:pointer;background:#1e1e1f;border:1px solid #ffffff1a;outline:none;padding:6px 16px;font-size:.88rem}.model-pill-selector:hover{background:#28292a}.chat-container-center{flex-direction:column;flex:1;justify-content:space-between;width:100%;max-width:768px;height:calc(100vh - 60px);margin:0 auto;padding:0 20px 20px;display:flex;position:relative;overflow:hidden}.chat-welcome-title{text-align:center;background:linear-gradient(90deg,#4285f4,#a855f7,#ec4899);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-top:15vh;margin-bottom:30px;font-size:2.2rem;font-weight:500}.chat-messages{flex-direction:column;flex:1;gap:24px;min-height:0;padding:20px 0;display:flex;overflow-y:auto}.message-row{gap:16px;font-size:.95rem;line-height:1.6;display:flex}.message-row.user{justify-content:flex-end}.message-bubble-gemini{border-radius:18px;max-width:85%;padding:12px 18px}.message-row.user .message-bubble-gemini{color:#fff;background:#2f2f32;border-bottom-right-radius:4px}.message-row.assistant .message-bubble-gemini{color:#e3e3e3;background:0 0}.gemini-input-pill-container{background:var(--bg-input);border:1px solid #ffffff1f;border-radius:28px;align-items:center;gap:12px;padding:8px 16px 8px 20px;transition:all .2s;display:flex;box-shadow:0 4px 20px #0000004d}.gemini-input-pill-container:focus-within{background:var(--bg-input-hover);border-color:#ffffff40;box-shadow:0 6px 24px #0006}.gemini-input-field{color:#fff;background:0 0;border:none;outline:none;flex:1;font-family:inherit;font-size:.95rem}.gemini-input-field::placeholder{color:#757575}.send-pill-btn{color:#fff;cursor:pointer;background:#4285f4;border:none;border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;transition:all .2s;display:flex}.send-pill-btn:hover{background:#3367d6;transform:scale(1.05)}.send-pill-btn:disabled{color:#555;cursor:not-allowed;background:#2a2a2d;transform:none}.disclaimer-text{color:#757575;text-align:center;margin-top:10px;font-size:.75rem}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.mobile-menu-btn{color:var(--text-main);cursor:pointer;background:0 0;border:none;padding:4px;display:none}.mobile-close-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;padding:4px;display:none}.mobile-sidebar-backdrop{display:none}@media (width<=768px){.mobile-menu-btn,.mobile-close-btn{justify-content:center;align-items:center;display:flex}.mobile-hide{display:none!important}.mobile-sidebar-backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:40;background:#0009;display:block;position:fixed;inset:0}.sidebar{z-index:50;width:280px;transition:transform .3s cubic-bezier(.16,1,.3,1);position:fixed;top:0;bottom:0;left:0;transform:translate(-100%);box-shadow:4px 0 24px #00000080}.sidebar.open{transform:translate(0)}.top-bar{align-items:center;gap:8px;height:auto;padding:10px 12px}.top-bar-left{flex:1;min-width:0}.model-pill-selector{text-overflow:ellipsis;white-space:nowrap;width:100%;max-width:150px;height:34px;padding:6px 10px;font-size:.76rem;overflow:hidden}.web-search-toggle-btn{white-space:nowrap;height:34px;padding:6px 10px!important;font-size:.74rem!important}.chat-container-center{height:calc(100vh - 70px);padding:10px 12px 16px}.chat-welcome-title{margin-top:6vh;padding:0 10px;font-size:1.5rem}.message-bubble-gemini{max-width:92%;padding:10px 14px;font-size:.88rem}.gemini-input-pill-container{gap:8px;padding:6px 10px 6px 14px}.gemini-input-field{font-size:.88rem}}.auth-screen{background:var(--bg-dark);box-sizing:border-box;justify-content:center;align-items:center;width:100%;max-width:100vw;min-height:100vh;padding:16px;display:flex;overflow-x:hidden}.auth-card{background:var(--bg-sidebar);border-radius:var(--radius-md);box-sizing:border-box;border:1px solid #ffffff1a;width:100%;max-width:400px;padding:24px 20px;box-shadow:0 12px 32px #0006}.auth-header{text-align:center;margin-bottom:24px}.social-auth-group{flex-direction:column;gap:10px;display:flex}.social-auth-btn{color:#fff;border-radius:var(--radius-pill);cursor:pointer;background:#131314;border:1px solid #ffffff1f;justify-content:center;align-items:center;gap:10px;width:100%;padding:11px 16px;font-size:.88rem;font-weight:500;transition:all .2s;display:flex}.social-auth-btn:hover{background:#28292a;border-color:#ffffff40}.auth-input{color:#fff;border-radius:var(--radius-md);background:#131314;border:1px solid #ffffff1f;outline:none;width:100%;padding:11px 14px;font-size:.9rem;transition:all .2s}.auth-input:focus{background:#1a1a1c;border-color:#4285f4}.auth-submit-btn{color:#fff;border-radius:var(--radius-pill);cursor:pointer;background:#4285f4;border:none;width:100%;margin-top:6px;padding:12px;font-size:.95rem;font-weight:600;transition:all .2s}.auth-submit-btn:hover{background:#3367d6;transform:translateY(-1px)}