:root{--color-primary: #0066CC;--color-primary-hover: #0052A3;--color-primary-light: rgba(0, 102, 204, .1);--bg-primary: #ffffff;--bg-secondary: #f7f7f8;--bg-tertiary: #ececf1;--bg-sidebar: #202123;--bg-sidebar-hover: #2a2b32;--bg-sidebar-active: #343541;--text-primary: #1a1a1a;--text-secondary: #666666;--text-tertiary: #999999;--text-sidebar: #ececf1;--text-sidebar-secondary: #8e8ea0;--color-success: #10a37f;--color-error: #ef4444;--color-warning: #f59e0b;--color-warning-bg: #fff3cd;--color-warning-border: #ffc107;--border-color: #e5e5e5;--border-color-light: #f0f0f0;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-size-xs: 13px;--font-size-sm: 14px;--font-size-base: 15px;--font-size-md: 16px;--font-size-lg: 17px;--font-size-xl: 20px;--font-size-2xl: 26px;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 12px;--spacing-lg: 16px;--spacing-xl: 20px;--spacing-2xl: 24px;--spacing-3xl: 32px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .15);--transition-fast: .15s ease;--transition-normal: .25s ease;--bg-hover: var(--bg-secondary);--bg-active: var(--bg-tertiary);--sidebar-width: 290px;--header-height: 56px;--input-max-width: 768px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;overflow:hidden}body{font-family:var(--font-family);font-size:var(--font-size-base);line-height:1.5;color:var(--text-primary);background:var(--bg-primary)}.app{display:flex;height:100vh;height:100dvh;overflow:hidden}.sidebar{width:var(--sidebar-width);background:var(--bg-sidebar);display:flex;flex-direction:column;flex-shrink:0;transition:transform var(--transition-normal)}.sidebar__header{padding:var(--spacing-lg);border-bottom:1px solid rgba(255,255,255,.1);display:flex;align-items:center;gap:var(--spacing-sm)}.btn-new-chat{display:flex;align-items:center;gap:var(--spacing-sm);flex:1;padding:var(--spacing-md) var(--spacing-lg);background:transparent;border:1px solid rgba(255,255,255,.2);border-radius:var(--radius-md);color:var(--text-sidebar);font-size:var(--font-size-base);cursor:pointer;transition:var(--transition-fast);text-align:left}.btn-new-chat:hover{background:var(--bg-sidebar-hover)}.btn-new-chat .icon{font-size:var(--font-size-xl);font-weight:300;line-height:1}.sidebar__content{flex:1;overflow-y:auto;padding:var(--spacing-sm) 0}.sidebar__content::-webkit-scrollbar{width:6px}.sidebar__content::-webkit-scrollbar-thumb{background:#fff3;border-radius:var(--radius-full)}.sidebar__footer{padding:var(--spacing-lg);border-top:1px solid rgba(255,255,255,.1);display:flex;flex-direction:column;gap:var(--spacing-sm)}.guest-banner{background:#f59e0b1f;border:1px solid rgba(245,158,11,.35);border-radius:var(--radius-md);padding:var(--spacing-sm) var(--spacing-md)}.guest-banner__header{display:flex;align-items:center;gap:var(--spacing-xs);margin-bottom:var(--spacing-xs)}.guest-banner__badge{background:#f59e0be6;color:#1a1a1a;font-size:12px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;padding:1px 5px;border-radius:var(--radius-sm);line-height:1.4}.guest-banner__title{font-size:var(--font-size-xs);color:#f59e0bd9;font-weight:500}.guest-banner__limits{display:flex;flex-direction:column;gap:2px}.guest-banner__row{display:flex;justify-content:space-between;align-items:center;font-size:var(--font-size-xs);color:var(--text-sidebar-secondary)}.guest-banner__row span:last-child{color:var(--text-sidebar);font-weight:500}.chat-item{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-lg);color:var(--text-sidebar);cursor:pointer;transition:var(--transition-fast);position:relative;background:none;border:none;width:100%;text-align:left;font-family:inherit;font-size:inherit}.chat-item:hover{background:var(--bg-sidebar-hover)}.chat-item--active{background:var(--bg-sidebar-active)}.chat-item__icon{font-size:var(--font-size-lg);opacity:.8;flex-shrink:0}.chat-item__title{flex:1;font-size:var(--font-size-sm);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-item__delete{display:flex;align-items:center;justify-content:center;width:28px;height:28px;background:transparent;border:none;border-radius:var(--radius-sm);color:var(--text-sidebar-secondary);cursor:pointer;font-size:var(--font-size-lg);transition:var(--transition-fast);flex-shrink:0;opacity:0;pointer-events:none}.chat-item:hover .chat-item__delete{opacity:1;pointer-events:auto}.chat-item__delete:hover{color:var(--color-error);background:#ef44441a}.user-info{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-sm);border-radius:var(--radius-md);color:var(--text-sidebar);font-size:var(--font-size-sm);cursor:pointer;transition:var(--transition-fast)}.user-info:hover{background:var(--bg-sidebar-hover)}.user-info__avatar{width:32px;height:32px;border-radius:var(--radius-full);background:var(--color-primary);display:flex;align-items:center;justify-content:center;font-weight:600;color:#fff;font-size:var(--font-size-sm);flex-shrink:0;overflow:hidden}.user-info__avatar img{width:100%;height:100%;object-fit:cover}.user-info__name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:inherit}.user-info__logout{background:none;border:none;color:var(--text-sidebar-secondary);cursor:pointer;padding:var(--spacing-xs);width:28px;height:28px;border-radius:var(--radius-sm);transition:var(--transition-fast);display:flex;align-items:center;justify-content:center;flex-shrink:0}.user-info__logout:hover{color:var(--text-sidebar);background:var(--bg-hover)}.user-menu-dropdown{position:absolute;bottom:calc(100% + 8px);left:var(--spacing-lg);right:var(--spacing-lg);background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:var(--spacing-sm) 0;z-index:100}.user-menu-dropdown__header{padding:var(--spacing-sm) var(--spacing-md);border-bottom:1px solid var(--border-color-light)}.user-menu-dropdown__name{font-size:var(--font-size-sm);font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-menu-dropdown__email{font-size:var(--font-size-xs);color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}.user-menu-dropdown__action{display:flex;align-items:center;gap:var(--spacing-sm);width:100%;padding:var(--spacing-sm) var(--spacing-md);background:none;border:none;font-family:inherit;font-size:var(--font-size-sm);color:var(--text-primary);cursor:pointer;transition:var(--transition-fast);text-align:left}.user-menu-dropdown__action:hover{background:var(--bg-secondary)}.guest-badge{display:inline-block;margin-top:4px;padding:2px 6px;background:#fbbf2426;border:1px solid rgba(251,191,36,.4);border-radius:var(--radius-sm);color:#b45309;font-size:13px;line-height:1.4}.empty-chats{padding:var(--spacing-xl);text-align:center;color:var(--text-sidebar-secondary);font-size:var(--font-size-sm)}.main{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--bg-primary)}.chat-header{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-lg) var(--spacing-xl);border-bottom:1px solid var(--border-color);background:var(--bg-primary);min-height:var(--header-height);flex-shrink:0}.chat-title{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary)}.chat-header__actions{display:flex;gap:var(--spacing-md);align-items:center;margin-left:auto}.agent-selector-wrapper{position:relative;display:inline-flex;flex-direction:column;gap:3px;max-width:min(420px,60vw)}.agent-selector-btn{display:inline-flex;align-items:center;gap:5px;background:none;border:none;border-radius:var(--radius-md);padding:4px 6px;cursor:pointer;font-family:inherit;font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary);text-align:left;transition:background var(--transition-fast),color var(--transition-fast);min-width:0;max-width:100%}.agent-selector-btn:hover{background:var(--bg-secondary);color:var(--color-primary)}.agent-selector-btn:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.agent-selector-btn--open{color:var(--color-primary)}.agent-selector-btn__name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}.agent-selector-btn__chevron{flex-shrink:0;color:var(--text-secondary);transition:transform var(--transition-fast);margin-top:1px}.agent-selector-btn--open .agent-selector-btn__chevron{transform:rotate(180deg);color:var(--color-primary)}.agent-description{font-size:var(--font-size-xs);color:var(--text-tertiary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding-left:6px;max-width:100%}.agent-selector-dropdown{position:absolute;top:calc(100% + 6px);left:0;z-index:200;width:max-content;min-width:280px;max-width:min(460px,90vw);background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:0 8px 24px #0000001f;overflow:hidden;animation:agentDropdownIn .12s ease}@keyframes agentDropdownIn{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}.agent-selector-option{display:flex;align-items:flex-start;gap:10px;width:100%;padding:11px 16px;background:none;border:none;border-bottom:1px solid var(--border-color-light);cursor:pointer;font-family:inherit;text-align:left;color:var(--text-primary);transition:background var(--transition-fast)}.agent-selector-option:last-child{border-bottom:none}.agent-selector-option:hover{background:var(--bg-secondary)}.agent-selector-option--active{background:var(--color-primary-light)}.agent-selector-option--active:hover{background:#0066cc24}.agent-selector-option__check{flex-shrink:0;width:18px;display:flex;align-items:center;justify-content:center;padding-top:2px;color:var(--color-primary)}.agent-selector-option__body{display:flex;flex-direction:column;gap:2px;min-width:0;flex:1}.agent-selector-option__name{font-size:var(--font-size-base);font-weight:500;line-height:1.35;color:var(--text-primary)}.agent-selector-option--active .agent-selector-option__name{color:var(--color-primary);font-weight:600}.agent-selector-option__desc{font-size:var(--font-size-xs);color:var(--text-tertiary);line-height:1.45;white-space:normal}.chat-title--loading{opacity:.5}.messages-container{flex:1;overflow-y:auto;display:flex;flex-direction:column}.messages-container::-webkit-scrollbar{width:8px}.messages-container::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:var(--radius-full)}.messages-container::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}.welcome-screen{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-3xl);text-align:center}.welcome-screen h2{font-size:var(--font-size-2xl);font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-sm)}.welcome-screen p{color:var(--text-secondary);font-size:var(--font-size-md);max-width:480px;margin-bottom:var(--spacing-xl)}.welcome-screen__logo{display:flex;align-items:center;justify-content:center;margin-bottom:var(--spacing-xl)}.welcome-screen__logo img{max-height:80px;max-width:240px;width:auto;height:auto;object-fit:contain}.welcome-screen__logo span{font-size:64px;line-height:1}.welcome-examples{display:flex;flex-wrap:wrap;gap:var(--spacing-sm);justify-content:center;max-width:500px;margin-top:var(--spacing-lg)}.example-btn{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-md) var(--spacing-lg);color:var(--text-primary);font-size:var(--font-size-sm);text-align:left;cursor:pointer;transition:background var(--transition-fast),border-color var(--transition-fast);line-height:1.4;font-family:inherit}.example-btn:hover{background:var(--bg-tertiary);border-color:var(--color-primary)}.messages{padding:var(--spacing-xl);max-width:var(--input-max-width);margin:0 auto;width:100%}.message{margin-bottom:var(--spacing-2xl);animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message__header{display:flex;align-items:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-sm)}.message__avatar{width:28px;height:28px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:var(--font-size-base);flex-shrink:0}.message--user .message__avatar{background:var(--color-primary);color:#fff}.message--assistant .message__avatar{background:var(--color-success);color:#fff}.message__role{font-weight:600;font-size:var(--font-size-sm);color:var(--text-primary)}.message__content{padding-left:calc(28px + var(--spacing-sm));line-height:1.7;color:var(--text-primary);font-size:var(--font-size-md)}.message__content p{margin-bottom:var(--spacing-md)}.message__content p:last-child{margin-bottom:0}.message__content h1,.message__content h2,.message__content h3,.message__content h4{font-weight:600;margin:var(--spacing-lg) 0 var(--spacing-sm);line-height:1.3}.message__content h1{font-size:var(--font-size-2xl)}.message__content h2{font-size:var(--font-size-xl)}.message__content h3{font-size:var(--font-size-lg)}.message__content ul,.message__content ol{padding-left:var(--spacing-xl);margin-bottom:var(--spacing-md)}.message__content li{margin-bottom:var(--spacing-xs)}.message__content code{background:var(--bg-tertiary);border-radius:var(--radius-sm);padding:2px 5px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.9em;color:var(--color-primary)}.message__content pre{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:var(--spacing-md);overflow-x:auto;margin-bottom:var(--spacing-md)}.message__content pre code{background:none;padding:0;color:var(--text-primary);font-size:var(--font-size-sm)}.message__content blockquote{border-left:3px solid var(--border-color);padding-left:var(--spacing-md);color:var(--text-secondary);margin-bottom:var(--spacing-md)}.message__content a{color:var(--color-primary);text-decoration:none}.message__content a:hover{text-decoration:underline}.message__content table{width:100%;border-collapse:collapse;margin-bottom:var(--spacing-md);font-size:var(--font-size-sm)}.message__content th,.message__content td{padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--border-color);text-align:left}.message__content th{background:var(--bg-secondary);font-weight:600}.message__content strong{font-weight:600}.message__content em{font-style:italic}.message__content hr{border:none;border-top:1px solid var(--border-color);margin:var(--spacing-lg) 0}.progress-status{padding:var(--spacing-md) 0;padding-left:calc(28px + var(--spacing-sm));font-size:var(--font-size-sm);color:var(--text-secondary);animation:fadeIn .2s ease}.tool-result{margin:var(--spacing-sm) 0;padding:var(--spacing-sm) var(--spacing-md);border-left:2px solid var(--border-color);border-radius:var(--radius-sm);font-size:var(--font-size-sm)}.tool-result summary{cursor:pointer;color:var(--text-secondary);-webkit-user-select:none;user-select:none;padding:var(--spacing-xs) 0}.tool-result__output{margin-top:var(--spacing-sm);padding:var(--spacing-sm);background:var(--bg-secondary);border-radius:var(--radius-sm);font-size:14px;white-space:pre-wrap;word-break:break-all;max-height:200px;overflow-y:auto;color:var(--text-primary)}.tool-result--error{border-left-color:#ef4444}.tool-result--error summary{color:#ef4444}.reasoning-block{margin:var(--spacing-sm) 0;padding:var(--spacing-sm) var(--spacing-md);border-left:2px solid var(--color-primary);opacity:.75;font-size:var(--font-size-sm)}.reasoning-block summary{cursor:pointer;color:var(--color-primary);-webkit-user-select:none;user-select:none;padding:var(--spacing-xs) 0}.reasoning-text{margin-top:var(--spacing-sm);color:var(--text-secondary);font-style:italic;white-space:pre-wrap}.typing-indicator{display:flex;align-items:center;gap:4px;padding:var(--spacing-md) 0;padding-left:calc(28px + var(--spacing-sm))}.typing-indicator span{width:8px;height:8px;background:var(--text-tertiary);border-radius:var(--radius-full);animation:typingBounce 1.4s infinite ease-in-out}.typing-indicator span:nth-child(1){animation-delay:-.32s}.typing-indicator span:nth-child(2){animation-delay:-.16s}@keyframes typingBounce{0%,80%,to{transform:translateY(0);opacity:.5}40%{transform:translateY(-8px);opacity:1}}.streaming-indicator{display:flex;align-items:center;gap:3px;margin-top:var(--spacing-sm);padding:2px 0}.streaming-indicator span{width:5px;height:5px;background:var(--text-tertiary);border-radius:var(--radius-full);opacity:.6;animation:typingBounce 1.4s infinite ease-in-out}.streaming-indicator span:nth-child(1){animation-delay:-.32s}.streaming-indicator span:nth-child(2){animation-delay:-.16s}.input-area{padding:var(--spacing-lg) var(--spacing-xl) var(--spacing-2xl);padding-bottom:calc(var(--spacing-2xl) + env(safe-area-inset-bottom));background:var(--bg-primary);border-top:1px solid var(--border-color-light);flex-shrink:0}.input-wrapper{display:flex;align-items:flex-end;gap:var(--spacing-sm);max-width:var(--input-max-width);margin:0 auto;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-md);transition:var(--transition-fast)}.input-wrapper:focus-within{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.message-input{flex:1;border:none;background:transparent;font-family:inherit;font-size:var(--font-size-md);line-height:1.5;resize:none;max-height:200px;color:var(--text-primary);overflow-y:auto}.message-input:focus{outline:none}.message-input::placeholder{color:var(--text-tertiary)}.send-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:var(--color-primary);border:none;border-radius:var(--radius-md);color:#fff;cursor:pointer;transition:var(--transition-fast);flex-shrink:0}.send-btn:hover:not(:disabled){background:var(--color-primary-hover)}.send-btn:disabled{opacity:.5;cursor:not-allowed}.stop-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:var(--color-error);border:none;border-radius:var(--radius-md);color:#fff;cursor:pointer;transition:var(--transition-fast);flex-shrink:0}.stop-btn:hover{background:#dc2626}.rating-block{margin-top:var(--spacing-md);padding-left:calc(28px + var(--spacing-sm))}.rating-stars{display:flex;gap:var(--spacing-xs);align-items:center}.star{font-size:28px;color:var(--border-color);cursor:pointer;transition:var(--transition-fast);-webkit-user-select:none;user-select:none;background:none;border:none;padding:0;line-height:1}.star:hover,.star.active{color:#ffc107}.star.locked{cursor:default;pointer-events:none}.rating-stars.locked .star.active{color:#ffc107}.rating-thanks{font-size:var(--font-size-xs);color:var(--text-tertiary);margin-left:var(--spacing-sm)}.rating-error{font-size:var(--font-size-xs);color:var(--color-error);margin-left:var(--spacing-sm)}.rating-comment{margin-top:var(--spacing-sm);display:flex;flex-direction:column;gap:var(--spacing-xs)}.rating-comment__input{width:100%;max-width:480px;padding:var(--spacing-xs) var(--spacing-sm);border:1px solid var(--border-color);border-radius:var(--border-radius);background:var(--bg-primary);color:var(--text-primary);font-size:var(--font-size-sm);font-family:inherit;resize:vertical;transition:border-color var(--transition-fast)}.rating-comment__input:focus{outline:none;border-color:var(--color-primary)}.rating-comment__actions{display:flex;gap:var(--spacing-xs)}.rating-saved-comment{margin-top:var(--spacing-xs);font-size:var(--font-size-xs);color:var(--text-secondary);font-style:italic}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-secondary);padding:var(--spacing-xl)}.auth-card{background:var(--bg-primary);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);width:100%;max-width:420px;overflow:hidden}.auth-card__header{padding:var(--spacing-2xl);text-align:center;border-bottom:1px solid var(--border-color)}.auth-card__header h1{font-size:var(--font-size-xl);font-weight:600;margin-bottom:var(--spacing-sm)}.auth-card__header p{color:var(--text-secondary);font-size:var(--font-size-sm)}.auth-card__body{padding:var(--spacing-2xl)}.auth-form{display:flex;flex-direction:column;gap:var(--spacing-lg)}.form-group{display:flex;flex-direction:column;gap:var(--spacing-sm)}.form-group label{font-size:var(--font-size-sm);font-weight:500;color:var(--text-primary)}.form-group input{padding:var(--spacing-md) var(--spacing-lg);border:1px solid var(--border-color);border-radius:var(--radius-md);font-size:var(--font-size-base);font-family:inherit;transition:var(--transition-fast);color:var(--text-primary);background:var(--bg-primary)}.form-group input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.btn-primary{padding:var(--spacing-md) var(--spacing-xl);background:var(--color-primary);color:#fff;border:none;border-radius:var(--radius-md);font-size:var(--font-size-base);font-family:inherit;font-weight:500;cursor:pointer;transition:var(--transition-fast);width:100%}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-link{background:none;border:none;padding:0;color:var(--color-primary);font-size:inherit;cursor:pointer;text-decoration:underline}.btn-link:hover:not(:disabled){color:var(--color-primary-hover)}.btn-link:disabled{opacity:.5;cursor:not-allowed}.auth-error{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md) var(--spacing-lg);background:#ef44441a;border:1px solid var(--color-error);border-radius:var(--radius-md);color:var(--color-error);font-size:var(--font-size-sm)}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-3xl);text-align:center}.empty-state__icon{font-size:64px;margin-bottom:var(--spacing-lg)}.empty-state h2{font-size:var(--font-size-xl);font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-sm)}.empty-state p{color:var(--text-secondary);font-size:var(--font-size-md);margin-bottom:var(--spacing-2xl)}.btn-new-chat-empty{display:inline-flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-xl);background:var(--color-primary);color:#fff;border:none;border-radius:var(--radius-md);font-size:var(--font-size-base);font-family:inherit;font-weight:500;cursor:pointer;transition:var(--transition-fast)}.btn-new-chat-empty:hover{background:var(--color-primary-hover)}.burger-btn{display:none;flex-direction:column;justify-content:space-between;width:36px;height:36px;padding:8px 7px;background:none;border:none;cursor:pointer;flex-shrink:0;border-radius:var(--radius-sm);transition:background var(--transition-fast)}.burger-btn:hover{background:var(--bg-hover)}.burger-btn span{display:block;height:2px;background:var(--text-secondary);border-radius:2px;transition:background var(--transition-fast)}.burger-btn:hover span{background:var(--text-primary)}.sidebar__close-btn{display:none;background:none;border:none;color:var(--text-sidebar-secondary);cursor:pointer;font-size:22px;width:32px;height:32px;align-items:center;justify-content:center;border-radius:var(--radius-sm);transition:var(--transition-fast);flex-shrink:0}.sidebar__close-btn:hover{color:var(--text-sidebar);background:var(--bg-sidebar-hover)}.sidebar-overlay{display:none}.profile-modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--spacing-xl);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.profile-modal{background:var(--bg-primary);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);width:100%;max-width:420px;max-height:90vh;overflow-y:auto;display:flex;flex-direction:column}.profile-modal__header{display:flex;align-items:flex-start;justify-content:space-between;padding:var(--spacing-2xl);border-bottom:1px solid var(--border-color)}.profile-modal__title{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary);margin-bottom:2px}.profile-modal__email{font-size:var(--font-size-sm);color:var(--text-secondary)}.profile-modal__close{background:none;border:none;cursor:pointer;color:var(--text-secondary);padding:4px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;transition:var(--transition-fast);flex-shrink:0}.profile-modal__close:hover{background:var(--bg-tertiary);color:var(--text-primary)}.profile-modal__body{padding:var(--spacing-2xl);display:flex;flex-direction:column;gap:var(--spacing-xl)}.profile-modal__section{display:flex;flex-direction:column;gap:var(--spacing-md)}.profile-modal__section-title{font-size:var(--font-size-sm);font-weight:600;color:var(--text-primary)}.profile-modal__form{display:flex;flex-direction:column;gap:var(--spacing-md)}.profile-modal__divider{height:1px;background:var(--border-color)}.profile-modal__success{font-size:var(--font-size-sm);color:var(--color-success)}.changelog-btn{position:relative;display:flex;align-items:center;justify-content:center;width:28px;height:28px;background:none;border:none;border-radius:var(--radius-sm);color:var(--text-sidebar-secondary);cursor:pointer;transition:var(--transition-fast);flex-shrink:0}.changelog-btn:hover{color:var(--text-sidebar);background:var(--bg-sidebar-hover)}.changelog-btn__icon{display:block}.changelog-btn__badge{position:absolute;top:3px;right:3px;width:7px;height:7px;background:var(--color-error);border-radius:var(--radius-full);border:1.5px solid var(--bg-sidebar)}.changelog-modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--spacing-xl);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.changelog-modal{background:var(--bg-primary);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);width:100%;max-width:640px;max-height:80vh;display:flex;flex-direction:column;overflow:hidden}.changelog-modal__header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-2xl);border-bottom:1px solid var(--border-color);flex-shrink:0}.changelog-modal__title{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary)}.changelog-modal__close{background:none;border:none;cursor:pointer;color:var(--text-secondary);padding:4px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;transition:var(--transition-fast);flex-shrink:0}.changelog-modal__close:hover{background:var(--bg-tertiary);color:var(--text-primary)}.changelog-modal__body{flex:1;overflow-y:auto;padding:var(--spacing-2xl);color:var(--text-primary);line-height:1.7}.changelog-modal__body h1{font-size:var(--font-size-xl);font-weight:700;margin:0 0 var(--spacing-lg)}.changelog-modal__body h2{font-size:var(--font-size-lg);font-weight:600;margin:var(--spacing-xl) 0 var(--spacing-sm);padding-bottom:var(--spacing-xs);border-bottom:1px solid var(--border-color-light)}.changelog-modal__body h3{font-size:var(--font-size-base);font-weight:600;color:var(--text-secondary);margin:var(--spacing-md) 0 var(--spacing-xs)}.changelog-modal__body ul{padding-left:var(--spacing-xl);margin-bottom:var(--spacing-md)}.changelog-modal__body li{margin-bottom:var(--spacing-xs)}.changelog-modal__body p{margin-bottom:var(--spacing-md)}.changelog-modal__body strong{font-weight:600}.changelog-modal__footer{padding:var(--spacing-lg) var(--spacing-2xl);border-top:1px solid var(--border-color);display:flex;justify-content:flex-end;flex-shrink:0}@media(max-width:768px){:root{--font-size-xs: 11px;--font-size-sm: 12px;--font-size-base: 13px;--font-size-lg: 14px;--font-size-xl: 16px;--font-size-2xl: 20px}.burger-btn,.sidebar__close-btn{display:flex}.sidebar-overlay{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:49}.sidebar{position:fixed;left:0;top:0;height:100%;z-index:50;transform:translate(-100%)}.sidebar.open{transform:translate(0)}.chat-header{padding-left:var(--spacing-xl);gap:var(--spacing-sm)}.agent-selector-wrapper{max-width:calc(100vw - 80px)}.agent-selector-btn{font-size:var(--font-size-md)}.agent-description{display:none}.agent-selector-dropdown{min-width:calc(100vw - 80px)}}.citation-badges{display:inline;white-space:nowrap}.citation-badge{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;padding:0 4px;margin:0 1px;font-size:10px;font-weight:600;line-height:1;color:var(--color-primary, #2563eb);background-color:color-mix(in srgb,var(--color-primary, #2563eb) 10%,transparent);border:1px solid color-mix(in srgb,var(--color-primary, #2563eb) 30%,transparent);border-radius:10px;text-decoration:none;vertical-align:super;cursor:pointer;transition:background-color .15s,color .15s;font-variant-numeric:tabular-nums}.citation-badge:hover{background-color:color-mix(in srgb,var(--color-primary, #2563eb) 20%,transparent);color:var(--color-primary, #1d4ed8);text-decoration:none}.citation-badge--unknown{color:var(--color-text-muted, #9ca3af);background-color:var(--color-surface-alt, #f3f4f6);border-color:var(--color-border, #e5e7eb);cursor:default}.inline-citation-text{display:contents}.link-alpha{color:var(--text-secondary);text-decoration:none;font-size:var(--font-size-sm);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);transition:color .15s,background .15s;white-space:nowrap}.link-alpha:hover{color:var(--color-primary);background:color-mix(in srgb,var(--color-primary) 10%,transparent)}.link-support{color:#e31e24;text-decoration:none;font-size:var(--font-size-sm);font-weight:600;padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);transition:background .15s;white-space:nowrap}.link-support:hover{background:#e31e241a}@keyframes sd-fadeIn{0%{opacity:0}to{opacity:1}}@keyframes sd-blurIn{0%{opacity:0;filter:blur(4px)}to{opacity:1;filter:blur(0)}}@keyframes sd-slideUp{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}[data-sd-animate]{animation:var(--sd-animation, sd-fadeIn) var(--sd-duration, .15s) var(--sd-easing, ease) both}