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svg{width:14px;height:14px}.model-picker-empty{padding:24px 12px;text-align:center;font-size:13px;color:#64748b;display:flex;flex-direction:column;align-items:center;gap:8px}.tier-badge-inline{vertical-align:middle;margin-left:6px;transform:translateY(-1px)}.tier-badge{display:inline-flex;align-items:center;padding:2px 7px;border-radius:999px;font-size:10px;font-weight:700;letter-spacing:.4px;text-transform:uppercase;flex-shrink:0}.tier-badge-free{background:#6b728026;color:#6b7280}.tier-badge-pro,.tier-badge-premium{background:#0d9b6a29;color:#0d9b6a}.tier-badge-plus{background:#3b82f629;color:#3b82f6}.tier-badge-enterprise{background:#f59e0b29;color:#d97706}.tier-badge-ultra{background:linear-gradient(135deg,#a855f738,#ec489938);color:#a855f7}[data-theme=light] .dropdown-trigger{background:#fff;border-color:#0000001f;color:#0f172a;box-shadow:0 1px 3px #0000000f}[data-theme=light] .dropdown-trigger:hover{background:#f8fafc;border-color:#0003}[data-theme=light] .dropdown-menu{background:#fffffffa;border-color:#0000001a;box-shadow:0 24px 60px -12px #0000002e,0 0 0 1px #0000000d;color:#0f172a}[data-theme=light] .model-picker-header{border-bottom-color:#00000014}[data-theme=light] .model-picker-title{color:#0f172a!important}[data-theme=light] .model-picker-subtitle{color:#64748b!important}[data-theme=light] .model-picker-search-input{background:#0000000a!important;border-color:#0000001f!important;color:#0f172a!important}[data-theme=light] .model-picker-search-input::placeholder{color:#94a3b8}[data-theme=light] .model-picker-search-input:focus{background:#fff!important;border-color:#10b981!important;box-shadow:0 0 0 3px #10b98133!important}[data-theme=light] .model-filter-pill{background:#0000000a!important;border-color:#00000014!important;color:#64748b!important}[data-theme=light] .model-filter-pill:hover{background:#00000012!important;color:#0f172a!important}[data-theme=light] .model-filter-pill.active{background:#10b9811f!important;border-color:#10b981!important;color:#0d9b6a!important;box-shadow:0 2px 8px #10b98133!important}[data-theme=light] .dropdown-item:hover{background:#0000000a!important}[data-theme=light] .dropdown-item.active{background:#10b98114!important;border-color:#10b98140!important;border-left:3px solid #10B981!important}[data-theme=light] .model-item-title{color:#0f172a!important}[data-theme=light] .model-item-code{color:#94a3b8!important}[data-theme=dark] .tier-badge-free{background:#6b728040;color:#9ca3af}[data-theme=dark] .tier-badge-pro,[data-theme=dark] .tier-badge-premium{background:#0d9b6a47;color:#6ee7b7}[data-theme=dark] .tier-badge-plus{background:#3b82f647;color:#93c5fd}[data-theme=dark] .tier-badge-enterprise{background:#f59e0b47;color:#fcd34d}[data-theme=dark] .tier-badge-ultra{background:linear-gradient(135deg,#a855f759,#ec489959);color:#d8b4fe}[dir=rtl] .dropdown-menu{left:auto;right:0}[dir=rtl] .dropdown-item{text-align:right;flex-direction:row-reverse}[dir=rtl] .dropdown-trigger svg.chevron-icon{margin-left:0;margin-right:var(--space-1)}.chat-area{flex:1;overflow-y:auto;display:flex;flex-direction:column;padding:0 var(--space-8)}.welcome-screen{flex:0 0 auto;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:0 0 var(--space-6);animation:welcomeFadeIn .5s cubic-bezier(.16,1,.3,1) forwards;width:100%;max-width:780px;margin:0 auto}@keyframes welcomeFadeIn{0%{opacity:0;transform:translateY(10px) scale(.985)}to{opacity:1;transform:translateY(0) scale(1)}}.welcome-logo{position:relative;display:inline-flex;align-items:center;justify-content:center;margin-bottom:var(--space-4)}.welcome-logo:before{content:"";position:absolute;width:80px;height:80px;border-radius:50%;background:radial-gradient(circle,rgba(13,155,106,.32) 0%,rgba(13,155,106,.08) 50%,transparent 72%);pointer-events:none;animation:pulseLogoAura 5s ease-in-out infinite}@keyframes pulseLogoAura{0%,to{transform:scale(1);opacity:.75}50%{transform:scale(1.15);opacity:1}}.welcome-logo-img{position:relative;z-index:1;width:58px;height:58px;filter:drop-shadow(0 6px 16px rgba(13,155,106,.35));border-radius:50%;transition:transform .3s cubic-bezier(.16,1,.3,1)}.welcome-logo:hover .welcome-logo-img{transform:scale(1.08) rotate(2deg)}.welcome-title{font-family:var(--font-family);font-size:clamp(1.9rem,3.8vw,2.45rem);font-weight:600;letter-spacing:-.035em;line-height:1.24;margin:0 auto var(--space-3);max-width:660px;color:var(--gray-900);transition:color var(--transition-fast)}[data-theme=dark] .welcome-title{color:#fff;background:linear-gradient(180deg,#fff,#e2e8f0);-webkit-background-clip:text;-webkit-text-fill-color:transparent;text-shadow:0 2px 24px rgba(255,255,255,.08)}.welcome-subtitle{font-family:var(--font-family);font-size:.885rem;font-weight:500;letter-spacing:-.01em;color:var(--primary);background:#0d9b6a14;border:1px solid rgba(13,155,106,.16);padding:.32rem .95rem;border-radius:9999px;display:inline-flex;align-items:center;gap:.4rem;margin:0 auto;box-shadow:0 2px 8px #0d9b6a0f;transition:all var(--transition-fast)}[data-theme=dark] .welcome-subtitle{background:#0d9b6a1f;border:1px solid rgba(16,185,129,.22);color:#34d399;box-shadow:0 2px 12px #00000040}.main-content.is-empty-chat,.main-content:has(#welcomeScreen:not([style*="display: none"])){display:flex;flex-direction:column;justify-content:center;height:100vh}.main-content.is-empty-chat .chat-area,.main-content:has(#welcomeScreen:not([style*="display: none"])) .chat-area{flex:0 0 auto;overflow:visible;padding:0 var(--space-6);margin-top:auto;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;width:100%}.main-content.is-empty-chat .welcome-screen,.main-content:has(#welcomeScreen:not([style*="display: none"])) .welcome-screen{flex:0 0 auto;padding:var(--space-2) var(--space-4) 1.5rem;width:100%;max-width:780px}.main-content.is-empty-chat .input-area,.main-content:has(#welcomeScreen:not([style*="display: none"])) .input-area{margin-bottom:auto;padding:0 var(--space-6);width:100%;max-width:780px}.main-content.is-empty-chat .bottom-info,.main-content:has(#welcomeScreen:not([style*="display: none"])) .bottom-info{margin-top:.5rem;margin-bottom:var(--space-3);font-size:.775rem;color:var(--gray-400)}.messages-container{flex:1;display:flex;flex-direction:column;gap:var(--space-6);padding:5rem 0 var(--space-8);max-width:760px;margin:0 auto;width:100%}.message{animation:fadeInUp .4s ease forwards}.message-user{display:flex;justify-content:flex-end}.message-user .message-bubble{background:var(--accent-purple);color:var(--gray-900);border-radius:var(--radius-2xl) var(--radius-2xl) var(--radius-sm) var(--radius-2xl);padding:1rem 1.25rem;max-width:75%;font-size:var(--font-size-base);line-height:1.6}.message-assistant{display:flex;flex-direction:column;gap:var(--space-3)}.message-assistant-header{display:flex;align-items:center;gap:var(--space-2)}.message-assistant-header .assistant-icon{width:24px;height:24px;background:transparent;display:flex;align-items:center;justify-content:center}.message-assistant-header .assistant-icon img{width:24px;height:24px;object-fit:contain}.message-assistant-header .assistant-icon svg{width:14px;height:14px;color:var(--white)}.message-assistant-header span{font-size:var(--font-size-xs);font-weight:600;color:var(--gray-500);text-transform:uppercase;letter-spacing:.05em}.message-assistant .message-content{padding-left:0;font-size:var(--font-size-base);line-height:1.8;color:var(--gray-700)}.message-assistant .message-content p{margin-bottom:var(--space-4)}.message-assistant .message-content strong{color:var(--gray-900);font-weight:600}.message-point{display:flex;gap:var(--space-3);margin-bottom:var(--space-4);align-items:flex-start}.message-point .point-icon{width:22px;height:22px;background:var(--primary-light);border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px}.message-point .point-icon svg{width:12px;height:12px;color:var(--primary)}.message-point .point-content{flex:1}.message-point .point-content strong{display:block;margin-bottom:var(--space-1);color:var(--gray-900)}.message-point .point-content p{margin:0;color:var(--gray-500);font-size:var(--font-size-sm)}.source-badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;background:var(--primary-light);border-radius:var(--radius-sm);font-size:var(--font-size-xs);color:var(--primary);font-weight:500;cursor:pointer;transition:background var(--transition-fast)}.source-badge:hover{background:#d1fae5}.source-badge svg{width:12px;height:12px}.message-actions{display:flex;align-items:center;gap:var(--space-3);padding-top:var(--space-3);border-top:1px solid var(--gray-100);margin-top:var(--space-4)}.action-btn{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;border-radius:var(--radius-md);cursor:pointer;color:var(--gray-400);transition:all var(--transition-fast)}.action-btn:hover{background:var(--gray-100);color:var(--gray-600)}.action-btn.active{color:var(--primary);background:#0d9b6a1f}[data-theme=dark] .action-btn:hover{background:#ffffff14;color:var(--gray-200)}[data-theme=dark] .action-btn.active{color:#34d399;background:#10b9812e}.action-btn svg{width:16px;height:16px}.message-meta-badge{display:inline-flex;align-items:center;gap:var(--space-2);margin-top:var(--space-2);padding:.32rem .8rem;background:var(--gray-100);border:1px solid var(--gray-200);border-radius:9999px;font-size:.775rem;color:var(--gray-600);animation:fadeIn .2s ease forwards;width:fit-content}[data-theme=dark] .message-meta-badge{background:#ffffff0f;border-color:#ffffff1f;color:var(--gray-300);box-shadow:0 2px 10px #0003}.message-meta-badge .meta-icon{display:flex;align-items:center;color:var(--primary)}[data-theme=dark] .message-meta-badge .meta-icon{color:#34d399}.message-meta-badge .meta-item strong{font-weight:600;color:var(--gray-800);margin-right:2px}[data-theme=dark] .message-meta-badge .meta-item strong{color:#e2e8f0}.message-meta-badge .meta-divider{color:var(--gray-300);font-size:.65rem}[data-theme=dark] .message-meta-badge .meta-divider{color:var(--gray-600)}.message-meta-badge .meta-provider-text{font-family:var(--font-mono, monospace);font-weight:600;color:var(--primary);background:#0d9b6a17;padding:1px 6px;border-radius:4px}[data-theme=dark] .message-meta-badge .meta-provider-text{background:#10b9812e;color:#34d399}.retry-btn{display:inline-flex;align-items:center;gap:var(--space-2);padding:.5rem 1rem;background:var(--white);border:1.5px solid #FCA5A5;border-radius:var(--radius-lg);cursor:pointer;font-size:var(--font-size-sm);font-weight:500;color:#dc2626;transition:all var(--transition-fast);margin-top:var(--space-2)}.retry-btn:hover{background:#fef2f2;border-color:#ef4444}.retry-btn svg{width:14px;height:14px}.message-error{color:#dc2626;font-size:var(--font-size-sm);padding:var(--space-3);background:#fef2f2;border-radius:var(--radius-md);border:1px solid #FECACA}.loading-dots{display:flex;gap:6px;padding:var(--space-4)}.loading-dots span{width:8px;height:8px;background:var(--primary);border-radius:50%;animation:pulse 1.4s infinite ease-in-out}.loading-dots span:nth-child(1){animation-delay:0s}.loading-dots span:nth-child(2){animation-delay:.2s}.loading-dots span:nth-child(3){animation-delay:.4s}.input-area{padding:var(--space-2) var(--space-6) var(--space-3);max-width:780px;margin:0 auto;width:100%;transition:all .3s cubic-bezier(.16,1,.3,1)}.input-bar{display:flex;flex-direction:column;background:var(--white);border:1.5px solid rgba(0,0,0,.09);border-radius:26px;box-shadow:0 4px 20px #0000000a,0 1px 3px #00000005;transition:all .25s cubic-bezier(.16,1,.3,1);overflow:hidden;padding:.45rem .65rem .45rem 1.1rem!important}.input-bar:focus-within{border-color:var(--primary);box-shadow:0 6px 28px #0d9b6a1f,0 0 0 3px #0d9b6a29}[data-theme=dark] .input-bar{background:#121929e0;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.11);box-shadow:0 8px 32px #0000005c,0 0 0 1px #ffffff08}[data-theme=dark] .input-bar:focus-within{border-color:#10b98199;box-shadow:0 10px 36px #00000080,0 0 0 3px #0d9b6a40}.input-attach-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:#00000008;border:1px solid rgba(0,0,0,.08);border-radius:50%;cursor:pointer;color:var(--gray-500);transition:all .2s ease;flex-shrink:0}[data-theme=dark] .input-attach-btn{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);color:var(--gray-400)}.input-attach-btn:hover{background:#0d9b6a1f;color:var(--primary);border-color:#0d9b6a4d}.input-attach-btn svg{width:17px;height:17px}.input-text{flex:1;border:none;outline:none;font-family:var(--font-family);font-size:.985rem;line-height:1.55;background:transparent;padding:.45rem 0;resize:none;min-height:24px;max-height:140px;color:var(--gray-900)}[data-theme=dark] .input-text{color:#f8fafc}.input-text::placeholder{color:var(--gray-400)}[data-theme=dark] .input-text::placeholder{color:#64748b}.input-send-btn{width:38px;height:38px;display:flex;align-items:center;justify-content:center;background:var(--primary-gradient);border:none;border-radius:50%;cursor:pointer;color:var(--white);transition:all .2s cubic-bezier(.16,1,.3,1);flex-shrink:0;box-shadow:0 3px 12px #0d9b6a59}.input-send-btn:hover:not(:disabled){transform:scale(1.06);box-shadow:0 5px 18px #0d9b6a7a}.input-send-btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}.input-send-btn svg{width:18px;height:18px}.mode-buttons{display:flex;gap:var(--space-3);margin-top:var(--space-3);padding-left:var(--space-1)}.mode-btn{display:inline-flex;align-items:center;gap:var(--space-2);padding:.4rem .85rem;font-size:var(--font-size-sm);font-weight:500;border:1.5px solid var(--gray-200);border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);background:var(--white);color:var(--gray-600)}.mode-btn:hover{border-color:var(--primary);color:var(--primary)}.mode-btn.active{background:var(--primary-light);border-color:var(--primary);color:var(--primary)}.mode-btn svg{width:14px;height:14px}.mode-btn .mode-icon{font-size:14px;line-height:1}.send-hint{text-align:right;font-size:var(--font-size-xs);color:var(--gray-400);margin-top:var(--space-2);padding-right:var(--space-2)}.send-hint kbd{font-family:inherit;font-weight:500}.bottom-info{text-align:center;padding:var(--space-2) 0;font-size:var(--font-size-xs);color:var(--gray-400)}.bottom-info a{color:var(--primary)}.settings-fab{position:fixed;bottom:1.5rem;left:1.5rem;width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:var(--white);border:1.5px solid var(--gray-200);border-radius:50%;cursor:pointer;color:var(--gray-500);transition:all var(--transition-fast);box-shadow:var(--shadow-md);z-index:50}.settings-fab:hover{color:var(--primary);border-color:var(--primary);box-shadow:var(--shadow-lg)}.settings-fab svg{width:18px;height:18px}.user-menu{position:relative}.user-avatar{width:36px;height:36px;border-radius:50%;background:var(--primary-gradient);display:flex;align-items:center;justify-content:center;color:var(--white);font-weight:600;font-size:var(--font-size-sm);cursor:pointer;border:none;transition:transform var(--transition-fast)}.user-avatar:hover{transform:scale(1.05)}.user-dropdown{position:absolute;top:calc(100% + 8px);right:0;background:var(--white);border:1px solid var(--gray-200);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);padding:var(--space-2);min-width:200px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:all var(--transition-fast);z-index:200}.user-dropdown.open{opacity:1;visibility:visible;transform:translateY(0)}.user-dropdown-item{display:flex;align-items:center;gap:var(--space-3);padding:.6rem .75rem;border-radius:var(--radius-md);font-size:var(--font-size-sm);color:var(--gray-700);cursor:pointer;border:none;background:none;width:100%;text-align:left;transition:background var(--transition-fast)}.user-dropdown-item:hover{background:var(--gray-100)}.user-dropdown-item svg{width:16px;height:16px;color:var(--gray-400)}.user-dropdown-item.danger{color:#dc2626}.user-dropdown-item.danger svg{color:#dc2626}@media(max-width:480px){.search-layout{flex-direction:column}.sidebar{position:fixed;left:0;top:0;bottom:0;width:85%;max-width:320px;z-index:1001;transform:translate(-100%);transition:transform var(--transition-base);box-shadow:var(--shadow-xl)}.sidebar.open{transform:translate(0)}.sidebar-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:1000}.sidebar.open+.sidebar-overlay{display:block}.chat-area{padding:0 var(--space-3)}.input-area{padding:var(--space-3)}.top-bar{padding:var(--space-2) var(--space-3)}.welcome-title{font-size:var(--font-size-xl);line-height:1.3}.welcome-subtitle{font-size:var(--font-size-sm)}.input-bar{border-radius:var(--radius-lg)}.message-content{max-width:92%;font-size:.95rem;line-height:1.55}.message-actions{opacity:1}.input-bar textarea{min-height:48px;max-height:120px;font-size:16px}.input-send-btn{width:44px;height:44px}.dropdown-trigger{padding:.5rem .75rem;font-size:.8rem}.dropdown-menu{min-width:240px;max-width:calc(100vw - 2rem);max-height:60vh}.dropdown-item{padding:.65rem .875rem;font-size:.875rem}.settings-modal{margin:0;border-radius:0;max-height:100vh;height:100vh}.settings-container{flex-direction:column;padding:0;gap:0}.settings-nav{flex-direction:row;overflow-x:auto;padding:var(--space-2) var(--space-3);gap:var(--space-2);border-bottom:1px solid var(--gray-100);-webkit-overflow-scrolling:touch}.settings-nav-item{flex-shrink:0;padding:.5rem .75rem;font-size:.8rem}.settings-content{flex:1;overflow-y:auto;padding:var(--space-4)}.setting-row{flex-direction:column;align-items:flex-start;gap:var(--space-2);padding:var(--space-3) 0}.quota-progress-container{width:100%}.suggestion-cards{gap:var(--space-2)}.suggestion-card{padding:var(--space-3);font-size:.875rem}.file-preview-container{padding:var(--space-2)}.file-preview-item{max-width:80px}}@media(min-width:481px)and (max-width:768px){.sidebar{display:none}.sidebar.open{display:block}.chat-area{padding:0 var(--space-5)}.input-area{padding:var(--space-4) var(--space-5)}.welcome-title{font-size:var(--font-size-2xl)}.message-content{max-width:85%}.settings-modal{margin:2rem;max-height:calc(100vh - 4rem)}.settings-container{gap:var(--space-4)}.settings-nav{flex-direction:column;padding:var(--space-4);border-right:1px solid var(--gray-100);border-bottom:none;min-width:180px}.settings-content{padding:var(--space-4)}}@media(min-width:769px)and (max-width:1024px){.sidebar{width:240px}.chat-area{padding:0 var(--space-6)}}@media(max-width:768px){.sidebar{display:none}.mobile-sidebar-toggle{display:flex!important}.chat-area{padding:0 var(--space-4)}.input-area{padding:var(--space-3) var(--space-4)}.welcome-title{font-size:var(--font-size-2xl)}.mobile-sidebar-toggle{display:flex}.top-bar{gap:var(--space-2)}}@media(max-width:600px){.modal{margin:.5rem;border-radius:var(--radius-lg)}.modal-header{padding:var(--space-3) var(--space-4)}.modal-body{padding:var(--space-4)}.modal-footer{padding:var(--space-3) var(--space-4)}.modal-form{gap:var(--space-3)}}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000;opacity:0;visibility:hidden;transition:all var(--transition-fast)}.modal-overlay.open{opacity:1;visibility:visible}.modal{background:var(--white);border-radius:var(--radius-xl);width:100%;max-width:520px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-xl);transform:scale(.95) translateY(10px);transition:transform var(--transition-base)}.modal-overlay.open .modal{transform:scale(1) translateY(0)}.modal-close{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:var(--gray-100);border:none;border-radius:var(--radius-md);cursor:pointer;color:var(--gray-500);transition:all var(--transition-fast)}.modal-close:hover{background:var(--gray-200);color:var(--gray-700)}.modal-close svg{width:16px;height:16px}.settings-modal{max-width:700px!important;width:90%;height:520px;padding:0;display:flex;flex-direction:column;border-radius:var(--radius-xl);background:var(--white);overflow:hidden;box-shadow:var(--shadow-xl)}.settings-modal .modal-header{padding:var(--space-4) var(--space-6);border-bottom:1px solid var(--gray-200);display:flex;justify-content:space-between;align-items:center}.settings-container{display:flex;flex:1;overflow:hidden}.settings-nav{width:200px;background:var(--gray-50);border-right:1px solid var(--gray-200);padding:var(--space-4);display:flex;flex-direction:column;gap:var(--space-2)}.settings-nav-item{display:flex;align-items:center;gap:var(--space-3);padding:.75rem 1rem;border-radius:var(--radius-lg);font-size:var(--font-size-sm);font-weight:500;color:var(--gray-600);border:none;background:transparent;cursor:pointer;text-align:left;transition:all var(--transition-fast)}.settings-nav-item:hover{background:var(--gray-100);color:var(--gray-900)}.settings-nav-item.active{background:var(--primary-light);color:var(--primary)}.settings-nav-item svg{width:18px;height:18px}.settings-content{flex:1;padding:var(--space-6);overflow-y:auto;display:flex;flex-direction:column}.settings-pane{display:none;flex-direction:column;gap:var(--space-5)}.settings-pane.active{display:flex}.settings-pane h3{font-size:var(--font-size-lg);font-weight:600;color:var(--gray-900);border-bottom:1px solid var(--gray-100);padding-bottom:var(--space-2);margin-bottom:var(--space-2)}.setting-row{display:flex;justify-content:space-between;align-items:center;gap:var(--space-4);padding:var(--space-2) 0}.setting-info h4{font-size:var(--font-size-base);font-weight:600;color:var(--gray-900);margin-bottom:var(--space-1)}.setting-info p{font-size:var(--font-size-sm);color:var(--gray-500);line-height:1.4}.theme-switcher{display:flex;background:var(--gray-100);padding:3px;border-radius:var(--radius-lg);border:1px solid var(--gray-200)}.theme-btn{padding:.5rem 1rem;font-size:var(--font-size-sm);font-weight:600;border-radius:var(--radius-md);border:none;background:transparent;cursor:pointer;color:var(--gray-500);transition:all var(--transition-fast)}.theme-btn.active{background:var(--white);color:var(--gray-900);box-shadow:var(--shadow-sm)}.toggle-switch{width:44px;height:24px;background:var(--gray-300);border-radius:var(--radius-full);position:relative;border:none;cursor:pointer;transition:background var(--transition-fast);padding:0;flex-shrink:0}.toggle-switch.active{background:var(--primary)}.toggle-knob{width:18px;height:18px;background:var(--white);border-radius:50%;position:absolute;top:3px;left:3px;transition:left var(--transition-fast);box-shadow:var(--shadow-sm)}.toggle-switch.active .toggle-knob{left:23px}.account-profile{display:flex;align-items:center;gap:var(--space-4);background:var(--gray-50);padding:var(--space-4);border-radius:var(--radius-xl);border:1px solid var(--gray-200)}.account-avatar-lg{width:54px;height:54px;background:var(--primary-gradient);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--white);font-weight:700;font-size:var(--font-size-lg);flex-shrink:0}.account-details h4{font-size:var(--font-size-base);font-weight:600;color:var(--gray-900)}.account-details p{font-size:var(--font-size-sm);color:var(--gray-500);margin-bottom:var(--space-2)}.quota-badge-container{display:flex;gap:var(--space-2)}.badge-pro{background:#eef2ff;color:#4f46e5;border:1px solid #C7D2FE}.quota-status-row{flex-direction:column;align-items:flex-start;gap:var(--space-3);background:var(--gray-50);padding:var(--space-4);border-radius:var(--radius-xl);border:1px solid var(--gray-200)}.quota-progress-container{width:100%}.quota-text{font-size:var(--font-size-sm);font-weight:600;color:var(--gray-700);text-align:right;margin-bottom:var(--space-1)}.quota-bar{width:100%;height:8px;background:var(--gray-200);border-radius:var(--radius-full);overflow:hidden}.quota-bar-fill{height:100%;background:var(--primary-gradient);border-radius:var(--radius-full);transition:width var(--transition-base)}.pro-upgrade-card{background:linear-gradient(135deg,#eef2ff,#e0e7ff);border:1.5px dashed #4F46E5;padding:var(--space-4);border-radius:var(--radius-xl);display:flex;flex-direction:column;gap:var(--space-3)}[data-theme=dark] .pro-upgrade-card{background:linear-gradient(135deg,#181926,#151a33);border-color:#6366f1}.pro-upgrade-card .pro-badge{font-size:var(--font-size-xs);font-weight:800;color:#4f46e5;letter-spacing:.1em}[data-theme=dark] .pro-upgrade-card .pro-badge{color:#818cf8}.pro-upgrade-card p{font-size:var(--font-size-sm);color:#374151;line-height:1.5}[data-theme=dark] .pro-upgrade-card p{color:var(--gray-400)}.api-key-container{display:flex;gap:var(--space-2);align-items:stretch;width:100%}.api-key-container .input-field{flex:1;min-width:0;font-family:SF Mono,Menlo,Consolas,monospace;letter-spacing:.5px;background:var(--gray-50);border:1.5px solid var(--gray-200);border-radius:var(--radius-md);padding:.55rem .75rem;font-size:var(--font-size-sm);color:var(--gray-700)}.api-key-container .input-field:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #0d9b6a1a}.api-key-container .btn-primary{flex-shrink:0;padding:.55rem 1rem;font-size:var(--font-size-sm);display:inline-flex;align-items:center;gap:var(--space-1);white-space:nowrap}.api-key-container .btn-primary svg{width:16px;height:16px}.developer-docs{display:flex;flex-direction:column;gap:var(--space-2)}.developer-docs .doc-tabs{display:flex;gap:var(--space-2);margin-bottom:var(--space-2);border-bottom:1px solid var(--gray-100);padding-bottom:var(--space-1)}.developer-docs .doc-tab-btn{background:transparent;border:none;padding:var(--space-1) var(--space-2);font-size:var(--font-size-xs);font-weight:600;cursor:pointer;color:var(--gray-400);border-bottom:2px solid transparent;transition:all var(--transition-fast)}.developer-docs .doc-tab-btn:hover{color:var(--gray-600)}.developer-docs .doc-tab-btn.active{color:var(--primary);border-bottom-color:var(--primary)}.developer-docs .doc-content-pane{background:var(--gray-50);border-radius:var(--radius-md);padding:var(--space-3);font-size:var(--font-size-xs);line-height:1.6;color:var(--gray-600);border:1px solid var(--gray-100);display:none}.developer-docs .doc-content-pane.active{display:block}.developer-docs .doc-content-pane code{background:var(--gray-200);padding:2px 6px;border-radius:var(--radius-sm);font-family:SF Mono,Menlo,Consolas,monospace;font-size:11px;color:var(--gray-800)}[data-theme=dark] .api-key-container .input-field{background:var(--gray-100);border-color:var(--gray-300);color:var(--gray-700)}[data-theme=dark] .developer-docs .doc-content-pane{background:var(--gray-100);border-color:var(--gray-300);color:var(--gray-500)}[data-theme=dark] .developer-docs .doc-content-pane code{background:var(--gray-300);color:var(--gray-800)}.settings-modal{max-height:90vh}.upgrade-input-group{display:flex;gap:var(--space-2)}.upgrade-input-group .input-field{flex:1;padding:.6rem .8rem;font-size:var(--font-size-sm);border-color:#c7d2fe}.upgrade-input-group .btn{padding:.6rem 1.2rem;font-size:var(--font-size-sm);background:linear-gradient(135deg,#4f46e5,#6366f1);color:var(--white);box-shadow:0 2px 8px #4f46e54d}.upgrade-input-group .btn:hover{background:linear-gradient(135deg,#3730a3,#4f46e5);box-shadow:0 4px 16px #4f46e566}.settings-form{display:flex;flex-direction:column;gap:var(--space-4)}.danger-zone{margin-top:var(--space-6);border-top:1px solid #FCA5A5;padding-top:var(--space-4)}.danger-zone h3{color:#dc2626!important;border-bottom:none!important;padding-bottom:0!important;margin-bottom:var(--space-3)}.danger-row{background:#fef2f2;border:1px solid #FCA5A5;padding:var(--space-4);border-radius:var(--radius-xl)}[data-theme=dark] .danger-row{background:#251616;border-color:#7f1d1d}.sidebar-bottom .user-menu{position:relative;margin-top:var(--space-2)}.sidebar-bottom .user-dropdown{position:absolute;bottom:0;left:50px;top:auto;right:auto;background:var(--white);border:1px solid var(--gray-200);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);padding:var(--space-2);min-width:200px;opacity:0;visibility:hidden;transform:translate(8px);transition:all var(--transition-fast);z-index:200}.sidebar-bottom .user-dropdown.open{opacity:1;visibility:visible;transform:translate(0)}[dir=rtl] .sidebar{border-right:none;border-left:1px solid var(--sidebar-border)}[dir=rtl] .sidebar-bottom .user-dropdown{left:auto;right:50px;transform:translate(-8px)}[dir=rtl] .sidebar-bottom .user-dropdown.open{transform:translate(0)}[dir=rtl] .settings-nav{border-right:none;border-left:1px solid var(--gray-200)}[dir=rtl] .settings-nav-item,[dir=rtl] .welcome-subtitle,[dir=rtl] .welcome-title,[dir=rtl] .input-text,[dir=rtl] .message-bubble,[dir=rtl] .bottom-info{text-align:right}[dir=rtl] .message-assistant-header{flex-direction:row;gap:8px}[dir=rtl] .message-assistant-header span{margin-left:0;margin-right:0}[dir=rtl] .message-actions{justify-content:flex-start;flex-direction:row-reverse}.sidebar-text{display:none;opacity:0;white-space:nowrap;font-size:var(--font-size-sm);font-weight:500;transition:opacity var(--transition-base)}.sidebar.expanded{width:240px;align-items:stretch;padding:var(--space-5) var(--space-3)}.sidebar.expanded .sidebar-btn{width:100%;justify-content:flex-start;padding:0 var(--space-3);gap:var(--space-3)}.sidebar.expanded .sidebar-text{display:inline-block;opacity:1}.sidebar.expanded .sidebar-chat-item{width:100%;justify-content:space-between;align-items:center;padding:0 var(--space-2);margin:0;display:flex}.sidebar.expanded .sidebar-divider{width:100%}.sidebar.expanded .user-menu-trigger{display:flex;align-items:center;gap:var(--space-3);cursor:pointer;padding:var(--space-2) var(--space-3);border-radius:var(--radius-md);margin-top:var(--space-2);width:100%}.sidebar.expanded .user-menu-trigger:hover{background:#0d9b6a14}.sidebar.expanded .user-menu-email{font-size:var(--font-size-xs);color:var(--gray-600);overflow:hidden;text-overflow:ellipsis;max-width:140px}.sidebar.expanded .sidebar-bottom .user-dropdown{left:230px}[dir=rtl] .sidebar.expanded .sidebar-bottom .user-dropdown{left:auto;right:230px}.input-bar{overflow:hidden}.input-bar-main{display:flex;align-items:center;gap:var(--space-3);width:100%}.file-previews{display:flex;flex-wrap:wrap;gap:var(--space-2);padding:var(--space-2) 0;border-bottom:1px solid var(--gray-100);margin-bottom:.25rem;width:100%}.file-preview-item{position:relative;width:60px;height:60px;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--gray-200);background:var(--gray-50);display:flex;align-items:center;justify-content:center}.file-preview-item img{width:100%;height:100%;object-fit:cover}.file-preview-item .pdf-preview{display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:10px;color:var(--gray-500);text-align:center;padding:2px}.file-preview-item .pdf-icon{font-size:20px;color:#ef4444}.file-preview-item .remove-preview-btn{position:absolute;top:2px;right:2px;width:16px;height:16px;border-radius:50%;background:#0009;color:#fff;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:10px;font-weight:700}.file-preview-item .remove-preview-btn:hover{background:#000c}.message-attachments{display:flex;flex-wrap:wrap;gap:var(--space-2);margin-bottom:var(--space-2)}.message-attachment-image{max-width:200px;max-height:150px;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--gray-200)}.message-attachment-image img{width:100%;height:100%;object-fit:cover;cursor:pointer;transition:transform var(--transition-fast)}.message-attachment-image img:hover{transform:scale(1.02)}.message-attachment-pdf{display:flex;align-items:center;gap:var(--space-2);padding:.5rem .75rem;background:var(--gray-50);border:1.5px solid var(--gray-200);border-radius:var(--radius-lg);text-decoration:none;color:var(--gray-700);font-size:var(--font-size-sm);transition:all var(--transition-fast)}.message-attachment-pdf:hover{background:var(--gray-100);border-color:var(--gray-300)}.message-attachment-pdf .pdf-icon{font-size:18px;color:#ef4444}#pane-apikey .akm-header-card{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;padding:14px 16px;background:var(--gray-50, #f8fafc);border:1px solid var(--gray-200, #e2e8f0);border-radius:var(--radius-lg, 10px)}[data-theme=dark] #pane-apikey .akm-header-card{background:#ffffff08;border-color:#ffffff14}#pane-apikey .akm-title-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}#pane-apikey .akm-badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.5px}#pane-apikey .akm-badge-plan{background:#7c3aed1f;color:var(--primary, #7c3aed);border:1px solid rgba(124,58,237,.25)}#pane-apikey .akm-badge-active{background:#10b9811f;color:#10b981;border:1px solid rgba(16,185,129,.3)}#pane-apikey .akm-badge-passive{background:#64748b26;color:#94a3b8;border:1px solid rgba(100,116,139,.25)}#pane-apikey .akm-quota-counter{display:flex;flex-direction:column;align-items:flex-end;gap:2px}#pane-apikey .akm-quota-label{font-size:11px;color:var(--gray-400, #94a3b8);text-transform:uppercase;letter-spacing:.5px}#pane-apikey .akm-quota-val{font-size:16px;font-weight:700;color:var(--primary, #7c3aed)}#pane-apikey .akm-create-card{display:flex;flex-direction:column;gap:8px;margin-top:12px}#pane-apikey .akm-create-inputs{display:flex;gap:8px;align-items:center}#pane-apikey .akm-input{flex:1;padding:8px 12px;font-size:var(--font-size-sm, 13px);border-radius:var(--radius-md, 8px)}#pane-apikey .akm-create-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;font-size:var(--font-size-sm, 13px);font-weight:600;border-radius:var(--radius-md, 8px);white-space:nowrap;flex-shrink:0}#pane-apikey .akm-create-btn svg{width:15px!important;height:15px!important;min-width:15px!important;max-width:15px!important}#pane-apikey .akm-quota-warning{font-size:12px;color:#f59e0b;background:#f59e0b1a;border:1px solid rgba(245,158,11,.25);padding:6px 10px;border-radius:6px}#pane-apikey .akm-reveal-card{background:linear-gradient(135deg,#10b98114,#7c3aed14);border:1px solid rgba(16,185,129,.35);border-radius:var(--radius-lg, 10px);padding:12px 14px;margin-top:12px;display:flex;flex-direction:column;gap:8px}#pane-apikey .akm-reveal-header{display:flex;justify-content:space-between;align-items:center}#pane-apikey .akm-reveal-badge{display:inline-flex;align-items:center;gap:6px;color:#10b981;font-size:12px;font-weight:700}#pane-apikey .akm-reveal-badge svg{width:14px!important;height:14px!important;min-width:14px!important;max-width:14px!important}#pane-apikey .akm-reveal-close{background:transparent;border:none;font-size:18px;line-height:1;color:var(--gray-400, #94a3b8);cursor:pointer;padding:0 4px}#pane-apikey .akm-reveal-desc{font-size:11.5px;color:var(--gray-400, #94a3b8);margin:0;line-height:1.4}#pane-apikey .akm-reveal-key-row{display:flex;gap:8px;align-items:center}#pane-apikey .akm-reveal-input{flex:1;background:#0003;border:1px solid rgba(16,185,129,.4);color:#10b981;font-family:monospace;font-size:12.5px;padding:7px 10px;border-radius:6px;letter-spacing:.5px}#pane-apikey .akm-copy-btn{display:inline-flex;align-items:center;gap:5px;padding:7px 14px;font-size:12px;font-weight:600;border-radius:6px;flex-shrink:0}#pane-apikey .akm-copy-btn svg{width:14px!important;height:14px!important;min-width:14px!important;max-width:14px!important}#pane-apikey .akm-list-wrapper{margin-top:14px;display:flex;flex-direction:column;gap:8px}#pane-apikey .akm-list-header{display:flex;justify-content:space-between;align-items:center;padding-bottom:4px}#pane-apikey .akm-keys-list{display:flex;flex-direction:column;gap:8px;max-height:320px;overflow-y:auto;padding-right:2px}#pane-apikey .akm-key-card{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 12px;background:var(--gray-50, #f8fafc);border:1px solid var(--gray-200, #e2e8f0);border-radius:var(--radius-md, 8px);transition:all var(--transition-fast, .15s ease)}[data-theme=dark] #pane-apikey .akm-key-card{background:#ffffff06;border-color:#ffffff14}#pane-apikey .akm-key-card:hover{border-color:var(--primary, #7c3aed)}#pane-apikey .akm-key-card.passive{opacity:.65;background:#94a3b80d}#pane-apikey .akm-key-info{display:flex;flex-direction:column;gap:4px;min-width:0;flex:1}#pane-apikey .akm-name-row{display:flex;align-items:center;gap:6px;min-width:0}#pane-apikey .akm-key-name{font-size:13.5px;font-weight:600;color:var(--gray-900, #0f172a);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:220px}[data-theme=dark] #pane-apikey .akm-key-name{color:#f1f5f9}#pane-apikey .akm-edit-name-btn{background:transparent;border:none;color:var(--gray-400, #94a3b8);cursor:pointer;padding:2px;display:inline-flex;align-items:center;border-radius:4px}#pane-apikey .akm-edit-name-btn:hover{color:var(--primary, #7c3aed)}#pane-apikey .akm-edit-name-btn svg{width:13px!important;height:13px!important;min-width:13px!important;max-width:13px!important}#pane-apikey .akm-key-details{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:11.5px;color:var(--gray-400, #94a3b8)}#pane-apikey .akm-masked-key{font-family:monospace;font-size:12px;letter-spacing:.5px;color:var(--gray-600, #475569)}[data-theme=dark] #pane-apikey .akm-masked-key{color:#cbd5e1}#pane-apikey .akm-key-actions{display:flex;align-items:center;gap:6px;flex-shrink:0}#pane-apikey .akm-action-btn{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:6px;background:transparent;border:1px solid var(--gray-200, #e2e8f0);color:var(--gray-500, #64748b);cursor:pointer;transition:all .15s ease}[data-theme=dark] #pane-apikey .akm-action-btn{border-color:#ffffff1a;color:#94a3b8}#pane-apikey .akm-action-btn:hover{background:#ffffff14;color:var(--gray-900, #0f172a)}[data-theme=dark] #pane-apikey .akm-action-btn:hover{color:#fff}#pane-apikey .akm-action-btn.copy:hover{background:#10b98126;border-color:#10b98166;color:#10b981}#pane-apikey .akm-action-btn.copy.copied{background:#10b98140;border-color:#10b981;color:#10b981}#pane-apikey .akm-action-btn.reveal:hover{background:#38bdf826;border-color:#38bdf866;color:#38bdf8}#pane-apikey .akm-action-btn.delete:hover{background:#ef444426;border-color:#ef444466;color:#ef4444}#pane-apikey .akm-action-btn svg{width:14px!important;height:14px!important;min-width:14px!important;max-width:14px!important}#pane-apikey .akm-status-toggle{padding:3px 8px;font-size:11px;font-weight:600;border-radius:6px;border:1px solid transparent;cursor:pointer;transition:all .15s ease}#pane-apikey .akm-status-toggle.active{background:#10b98126;color:#10b981;border-color:#10b9814d}#pane-apikey .akm-status-toggle.passive{background:#64748b26;color:#94a3b8;border-color:#64748b4d}#pane-apikey .akm-inline-name-form{display:flex;align-items:center;gap:4px}#pane-apikey .akm-inline-input{padding:2px 6px;font-size:12px;border-radius:4px;border:1px solid var(--primary, #7c3aed);background:var(--bg-surface, #1e293b);color:#fff;width:140px}#pane-apikey .akm-inline-btn{padding:2px 6px;font-size:11px;border-radius:4px;border:none;cursor:pointer}#pane-apikey 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