:root{--background: oklch(.92 .002 60);--foreground: oklch(.18 .005 60);--card: oklch(.92 .002 60);--card-foreground: oklch(.18 .005 60);--primary: oklch(.22 .005 60);--primary-foreground: oklch(.94 .002 60);--secondary: oklch(.88 .003 60);--secondary-foreground: oklch(.22 .005 60);--muted: oklch(.88 .003 60);--muted-foreground: oklch(.52 .005 60);--accent: oklch(.88 .003 60);--accent-foreground: oklch(.22 .005 60);--destructive: oklch(.577 .245 27.325);--border: oklch(.85 0 0);--input: oklch(.88 0 0);--ring: oklch(.708 0 0);--chart-1: oklch(.646 .222 41.116);--chart-2: oklch(.58 .04 60);--chart-3: oklch(.398 .07 227.392);--chart-4: oklch(.828 .189 84.429);--chart-5: oklch(.68 .12 75);--bg-primary: var(--background);--bg-secondary: var(--secondary);--bg-tertiary: var(--muted);--input-bg: var(--card);--text-primary: var(--foreground);--text-secondary: var(--muted-foreground);--text-tertiary: color-mix(in oklch, var(--foreground) 45%, var(--background));--msg-user-bg: oklch(.78 .025 60);--msg-user-text: oklch(.22 .005 60);--msg-bot-bg: var(--bg-secondary);--msg-bot-text: var(--card-foreground);--success: var(--chart-2);--error: var(--destructive);--warning: var(--chart-4);--accent-primary: var(--chart-5);--accent-warm: var(--chart-5);--accent-secondary: color-mix(in oklch, var(--accent-primary) 60%, var(--foreground));--accent-glow: color-mix(in oklch, var(--accent-primary) 10%, transparent);--border-accent: color-mix(in oklch, var(--accent-primary) 20%, var(--border));--border-subtle: var(--border);--border-medium: color-mix(in oklch, var(--chart-2) 15%, var(--input));--scrim: oklch(.145 0 0 / 60%);--shadow-1: 0 1px 2px oklch(0 0 0 / 4%);--shadow-2: 0 2px 4px oklch(0 0 0 / 4%), 0 4px 8px oklch(0 0 0 / 4%);--shadow-3: 0 4px 8px oklch(0 0 0 / 4%), 0 8px 16px oklch(0 0 0 / 4%), 0 16px 32px oklch(0 0 0 / 4%);--shadow-4: 0 8px 16px oklch(0 0 0 / 6%), 0 16px 32px oklch(0 0 0 / 6%), 0 32px 64px oklch(0 0 0 / 6%);--shadow-glow: 0 0 40px color-mix(in oklch, 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cubic-bezier(.25, 1, .5, 1);--ease-spring: cubic-bezier(.34, 1.56, .64, 1);--ease-smooth: cubic-bezier(.4, 0, .2, 1);--duration-fast: .15s var(--ease-smooth);--duration-base: .28s var(--ease-out-quart);--duration-slow: .42s var(--ease-out-expo);--duration-slower: .6s var(--ease-out-expo)}body[class*=-dark]{--brand-icon-filter: none;--seal-filter: drop-shadow(0 4px 12px rgba(0, 0, 0, .25))}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100dvh;width:100%;font-family:var(--font-sans);font-size:var(--text-base);line-height:1.6;background-color:var(--bg-primary);color:var(--text-primary);overflow:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color .4s var(--ease-out-quart),color .4s var(--ease-out-quart)}::selection{background:color-mix(in oklch,var(--accent-primary) 28%,transparent);color:var(--text-primary)}body.theme-transitioning,body.theme-transitioning #app,body.theme-transitioning aside#sidebar,body.theme-transitioning .app-header,body.theme-transitioning .message-bubble,body.theme-transitioning .input-container,body.theme-transitioning #messages-container,body.theme-transitioning .sidebar-content{transition:background-color .4s var(--ease-out-quart),border-color .4s var(--ease-out-quart),color .4s var(--ease-out-quart)}h1,h2,h3,h4,.brand-title{font-family:var(--font-display);font-weight:500;line-height:1.2;font-optical-sizing:auto;letter-spacing:-.015em;text-wrap:balance}.message-content{font-family:var(--message-font-family, var(--font-serif));font-size:var(--message-font-size, var(--text-lg));line-height:1.7;text-wrap:pretty}.message-wrapper.bot .message-content{font-family:var(--message-font-family, var(--font-serif));font-weight:400;font-size:var(--message-font-size, var(--text-lg));line-height:1.7;letter-spacing:0}.message-wrapper.bot .message-content pre,.message-wrapper.bot .message-content code,.message-wrapper.bot .message-content pre 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rotate(-1deg)}}#app:after{content:"";position:absolute;inset:0;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");background-repeat:repeat;mix-blend-mode:overlay;pointer-events:none;opacity:.035;z-index:1}#app>*{position:relative;z-index:2}aside#sidebar{width:320px;max-width:320px;min-width:280px;background:color-mix(in oklch,var(--chart-2) 4%,var(--bg-secondary));border-right:1px solid var(--border-subtle);display:flex;flex-direction:column;padding:0;transition:max-width .42s var(--ease-out-expo),min-width .42s var(--ease-out-expo),width .42s var(--ease-out-expo),border-right-color .42s var(--ease-out-expo);z-index:20;flex-shrink:0;position:relative;overflow:hidden}.sidebar-content{width:320px;min-width:280px;height:100%;display:flex;flex-direction:column;padding:var(--space-8);overflow-y:auto;overflow-x:hidden;transform-origin:left center;opacity:1;will-change:transform,opacity;transition:transform .42s var(--ease-out-expo),opacity .42s var(--ease-out-expo)}aside#sidebar.collapsed{max-width:0;width:0;min-width:0;padding:0;margin:0;border-right-color:transparent}aside#sidebar.collapsed .sidebar-content{transform:translate(-100%) scale(.92);opacity:0}.sidebar-brand{display:flex;align-items:center;gap:var(--space-3);margin-bottom:var(--space-6);padding-bottom:var(--space-5);border-bottom:1px solid transparent;background:linear-gradient(to right,transparent,color-mix(in oklch,var(--border-subtle) 75%,var(--accent-primary)),transparent) left bottom / 100% 1px no-repeat;min-width:0;flex-shrink:0}.brand-logo{width:36px;height:36px;background:transparent;border-radius:0;display:flex;align-items:center;justify-content:center}.brand-logo img{width:30px;height:30px;display:block;filter:var(--brand-icon-filter)}.brand-title{font-size:var(--text-lg);color:var(--text-primary);letter-spacing:-.02em;white-space:normal;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;line-height:1.2}.new-chat-btn{position:relative;width:100%;background:transparent;border:1px solid color-mix(in oklch,var(--chart-2) 12%,var(--border-medium));color:var(--text-secondary);padding:var(--space-4) var(--space-5);border-radius:14px;cursor:pointer;font-family:var(--font-sans);font-size:var(--text-sm);font-weight:500;display:flex;align-items:center;justify-content:center;gap:var(--space-3);transition:all var(--duration-base);overflow:hidden}.new-chat-btn:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,color-mix(in oklch,var(--accent-primary) 24%,transparent) 0%,var(--accent-glow) 35%,color-mix(in oklch,var(--accent-primary) 60%,transparent) 100%);opacity:0;transform:translateY(6px) scale(1.03);transition:opacity var(--duration-base),transform .42s var(--ease-out-expo)}.new-chat-btn:hover{background:linear-gradient(135deg,var(--accent-glow) 0%,var(--accent-primary) 100%);border-color:var(--accent-primary);color:var(--primary-foreground);transform:translateY(-1px);box-shadow:var(--shadow-2),var(--shadow-glow)}.new-chat-btn:hover:before{opacity:1;transform:translateY(0) scale(1)}.new-chat-btn svg{width:18px;height:18px;transition:transform var(--ease-spring)}.new-chat-btn:hover svg{transform:rotate(90deg)}.chat-history{flex-grow:1;overflow-y:auto;overflow-x:hidden;display:flex;flex-direction:column;gap:var(--space-2);margin-top:var(--space-5);padding-right:var(--space-2);min-width:0}.chat-history::-webkit-scrollbar{width:6px}.chat-history::-webkit-scrollbar-thumb{background:var(--border-medium);border-radius:3px}.chat-history::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}.chat-item{position:relative;border-radius:10px;cursor:pointer;color:var(--text-secondary);font-size:var(--text-sm);white-space:normal;overflow:visible;text-overflow:ellipsis;display:flex;justify-content:space-between;transition:all var(--duration-base);border:1px solid transparent;min-width:0;height:auto;flex-direction:column;gap:var(--space-1);padding:var(--space-3);align-items:stretch}.chat-item:before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);width:4px;height:60%;background:linear-gradient(to bottom,color-mix(in oklch,var(--accent-primary) 95%,var(--bg-secondary)),color-mix(in oklch,var(--accent-secondary) 85%,var(--bg-secondary)));border-radius:3px;transition:transform var(--ease-spring)}.chat-item:hover{background:var(--bg-tertiary);color:var(--text-primary);padding-left:var(--space-5)}.chat-item:hover:before{transform:translateY(-50%) scaleY(1)}.chat-item.active{background:linear-gradient(135deg,color-mix(in oklch,var(--accent-primary) 10%,transparent),transparent 70%);color:var(--text-primary);border:1px solid color-mix(in oklch,var(--accent-primary) 25%,var(--border-subtle));transition:background var(--duration-base)}.chat-item.active:before{transform:translateY(-50%) scaleY(1)}.pin-chat-btn.pinned{color:var(--accent-primary);opacity:1}.delete-chat-btn{opacity:0;background:none;border:none;color:var(--text-tertiary);cursor:pointer;padding:var(--space-1);border-radius:6px;transition:all var(--duration-fast);display:flex;align-items:center;justify-content:center}.chat-item:hover .delete-chat-btn{opacity:1}.delete-chat-btn:hover{color:var(--error);background:color-mix(in oklch,var(--destructive) 10%,transparent)}.chat-item-header{display:flex;justify-content:space-between;width:100%;align-items:center;min-width:0;flex-shrink:0}.chat-title{font-weight:500;color:var(--text-primary);white-space:normal;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;flex:1;min-width:0;line-height:1.4}.chat-time{font-size:var(--text-xs);color:var(--text-tertiary);margin-left:var(--space-2);font-variant-numeric:tabular-nums;flex-shrink:0;line-height:1.4}.chat-preview{font-size:var(--text-xs);color:var(--text-tertiary);white-space:normal;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;width:100%;opacity:.8;min-height:2.8em;line-height:1.4}.date-header{font-size:11px;font-weight:700;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.08em;padding:var(--space-4) var(--space-2) var(--space-2);margin-top:var(--space-2);position:relative}.date-header:first-child{margin-top:0}.chat-actions{position:absolute;right:var(--space-2);top:var(--space-2);display:flex;gap:var(--space-1);opacity:0;transition:opacity var(--duration-fast);background:var(--bg-tertiary);padding-left:var(--space-2);border-radius:6px;box-shadow:-10px 0 10px -5px var(--bg-tertiary)}.chat-item:hover .chat-actions{opacity:1}.action-btn{background:none;border:none;color:var(--text-tertiary);cursor:pointer;padding:12px;border-radius:4px;display:flex;align-items:center;justify-content:center;transition:all var(--duration-fast)}.action-btn:hover{color:var(--text-primary);background:var(--bg-secondary)}.action-btn.delete:hover{color:var(--error);background:color-mix(in oklch,var(--destructive) 10%,transparent)}.chat-item.loading,.skeleton-chat-item{background:linear-gradient(90deg,color-mix(in oklch,var(--bg-secondary) 100%,transparent) 25%,color-mix(in oklch,var(--bg-tertiary) 100%,transparent),color-mix(in oklch,var(--bg-secondary) 100%,transparent) 75%);background-size:200% 100%;animation:shimmer 1.8s ease-in-out infinite;pointer-events:none}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.skeleton-text{height:12px;background:var(--bg-tertiary);border-radius:4px;margin:8px 0;opacity:.6}.skeleton-text:nth-child(1){width:80%}.skeleton-text:nth-child(2){width:95%}.skeleton-text:nth-child(3){width:70%}.empty-state-sidebar{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-8) var(--space-4);text-align:center;color:var(--text-tertiary);gap:var(--space-3);margin-top:var(--space-8)}.empty-state-icon{width:48px;height:48px;color:var(--text-tertiary);opacity:.5;margin-bottom:var(--space-2)}.empty-state-text{font-size:var(--text-sm);font-weight:500;color:var(--text-secondary)}.empty-state-sub{font-size:var(--text-xs);opacity:.7}.sidebar-footer{margin-top:var(--space-5);padding-top:var(--space-5);border-top:1px solid var(--border-subtle)}.sidebar-user{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3);border-radius:12px;transition:background var(--duration-base);cursor:pointer}.sidebar-user:hover{background:var(--bg-tertiary)}.user-avatar{width:36px;height:36px;border-radius:50%;background:radial-gradient(circle at 30% 25%,color-mix(in oklch,var(--accent-primary) 38%,var(--primary-foreground)) 0%,transparent 58%),linear-gradient(135deg,color-mix(in oklch,var(--accent-primary) 34%,transparent),color-mix(in oklch,var(--accent-secondary) 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10px;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:10px;color:var(--text-primary);cursor:pointer;font-size:14px;font-weight:500;font-family:inherit;transition:all .2s ease;white-space:nowrap}.agent-selector-btn:hover{background:var(--bg-hover);border-color:var(--accent-primary)}.agent-selector-btn:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}.agent-emoji{font-size:18px;line-height:1}.agent-name{font-size:14px;font-weight:600;letter-spacing:.01em}.agent-chevron{opacity:.5;transition:transform .2s ease;flex-shrink:0}.agent-selector.open .agent-chevron{transform:rotate(180deg)}.agent-dropdown{position:absolute;top:calc(100% + 6px);left:50%;transform:translate(-50%);min-width:200px;background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:12px;box-shadow:0 8px 32px #00000040,0 2px 8px #00000026;padding:6px;z-index:100;opacity:0;visibility:hidden;transform:translate(-50%) translateY(-4px) scale(.98);transition:all .15s ease}.agent-selector.open .agent-dropdown{opacity:1;visibility:visible;transform:translate(-50%) translateY(0) scale(1)}.agent-option{display:flex;align-items:center;gap:10px;padding:10px 12px;border:none;background:transparent;color:var(--text-primary);cursor:pointer;border-radius:8px;width:100%;font-size:14px;font-family:inherit;transition:background .15s ease;text-align:left}.agent-option:hover{background:var(--bg-hover)}.agent-option.active{background:color-mix(in oklch,var(--accent-primary) 15%,transparent)}.agent-option-emoji{font-size:20px;width:28px;text-align:center;flex-shrink:0}.agent-option-info{display:flex;flex-direction:column;gap:1px;min-width:0}.agent-option-name{font-weight:600;font-size:14px}.agent-option-id{font-size:11px;color:var(--text-tertiary);opacity:.7}.agent-option .agent-check{margin-left:auto;opacity:0;color:var(--accent-primary);flex-shrink:0}.agent-option.active 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10px;height:auto;min-width:56px}#font-type-select,#font-size-select,#theme-select{padding:var(--space-2) var(--space-4);border-radius:10px;border:1px solid var(--border-medium);background:var(--bg-secondary);color:var(--text-primary);font-family:var(--font-sans);font-size:var(--text-sm);outline:none;cursor:pointer;max-width:200px;transition:all var(--duration-base);appearance:none;background-image:url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235C5C57' stroke-width='2' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;padding-right:32px}#font-type-select:hover,#font-size-select:hover,#theme-select:hover{border-color:var(--accent-primary)}#font-type-select:focus,#font-size-select:focus,#theme-select:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--accent-glow)}#search-chats{width:180px;padding:var(--space-2) var(--space-4);border-radius:10px;border:1px solid var(--border-medium);background:var(--bg-secondary);color:var(--text-primary);font-family:var(--font-sans);font-size:var(--text-sm);outline:none;transition:all var(--duration-base);background-image:url("data:image/svg+xml,%3Csvg width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%235C5C57' stroke-width='2' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.35-4.35'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:10px center;padding-left:36px}#search-chats::placeholder{color:var(--text-tertiary)}#search-chats:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--accent-glow);width:220px}@media (max-width: 768px){.app-header{padding:0 var(--space-4)}#search-chats{width:140px}#font-type-select,#font-size-select,#theme-select{max-width:160px}.header-group+.header-group{padding-left:var(--space-3);margin-left:var(--space-1)}.app-header .icon-label{display:none}.icon-btn.with-label{min-width:44px;padding:8px 10px}.agent-name{display:none}.agent-selector-btn{padding:6px 8px;gap:4px}.agent-dropdown{min-width:180px}}#messages-container{flex-grow:1;overflow-y:auto;scrollbar-gutter:stable;padding:var(--space-12) var(--space-6) 180px;display:flex;flex-direction:column;gap:var(--space-8);scroll-behavior:smooth;position:relative}#messages-container::-webkit-scrollbar{width:8px}#messages-container::-webkit-scrollbar-track{background:transparent;margin:8px 0}#messages-container::-webkit-scrollbar-thumb{background:linear-gradient(180deg,color-mix(in oklch,var(--accent-primary) 20%,transparent),color-mix(in oklch,var(--accent-primary) 12%,transparent));border-radius:6px;border:2px solid transparent;background-clip:padding-box;transition:all var(--duration-base)}#messages-container::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,color-mix(in oklch,var(--accent-primary) 46%,transparent),color-mix(in oklch,var(--accent-primary) 28%,transparent));border-width:1px}.chat-history::-webkit-scrollbar{width:8px}.chat-history::-webkit-scrollbar-track{background:transparent}.chat-history::-webkit-scrollbar-thumb{background:linear-gradient(180deg,color-mix(in oklch,var(--accent-primary) 30%,var(--border-medium)),color-mix(in oklch,var(--accent-primary) 15%,var(--border-medium)));border-radius:6px;transition:all var(--duration-base)}.chat-history::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,color-mix(in oklch,var(--accent-primary) 50%,var(--border-medium)),color-mix(in oklch,var(--accent-primary) 30%,var(--border-medium)))}.message-wrapper{display:flex;flex-direction:column;max-width:var(--content-max-width, 1200px);margin:0 auto;width:100%;position:relative;transform:translateY(20px) scale(.98);animation:messageRevealEnhanced .5s var(--ease-out-expo) 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scale(.95);opacity:0;max-height:0;margin:0;padding:0}}.message-wrapper.user{align-items:flex-end;flex-direction:row-reverse;gap:var(--space-3)}.message-wrapper.bot{align-items:flex-start;flex-direction:row;gap:var(--space-3)}.message-avatar{width:36px;height:36px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-size:14px;font-weight:600;box-shadow:var(--shadow-2);transition:transform var(--duration-base);position:relative;overflow:hidden}.message-wrapper.user .message-avatar{background:linear-gradient(135deg,color-mix(in oklch,var(--accent-primary) 100%,transparent),color-mix(in oklch,var(--accent-secondary) 100%,transparent));color:#fff;border:2px solid color-mix(in oklch,var(--accent-primary) 30%,transparent)}.message-wrapper.bot .message-avatar{background:linear-gradient(135deg,color-mix(in oklch,var(--chart-2) 80%,var(--bg-secondary)),color-mix(in oklch,var(--accent-primary) 40%,var(--bg-secondary)));color:var(--text-primary);border:2px solid var(--border-medium)}.message-wrapper:hover .message-avatar{transform:scale(1.05)}.message-content-wrapper{flex:1;display:flex;flex-direction:column;min-width:0}.message-bubble{max-width:100%;padding:var(--space-5) var(--space-6);border-radius:18px;position:relative;box-shadow:var(--shadow-1);backdrop-filter:blur(12px) saturate(110%);transition:transform var(--duration-base),box-shadow var(--duration-base),border-color var(--duration-base)}@media (max-width: 768px){.message-bubble{max-width:90%;padding:var(--space-4) var(--space-5)}}.message-bubble:before{content:"";position:absolute;inset:0;border-radius:inherit;padding:.75px;background:linear-gradient(135deg,color-mix(in oklch,var(--accent-primary) 16%,transparent),color-mix(in oklch,var(--accent-primary) 4%,transparent));-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity var(--duration-base);pointer-events:none}.message-wrapper:hover .message-bubble:before{opacity:.45}.message-wrapper.user .message-bubble{background:var(--msg-user-bg);color:var(--msg-user-text);border-bottom-right-radius:10px}.message-wrapper.user .message-content{font-family:var(--message-font-family, var(--font-sans));font-weight:400;font-size:var(--message-font-size, var(--text-base));line-height:1.5;letter-spacing:0;white-space:pre-wrap}.message-wrapper.bot .message-bubble{background:var(--msg-bot-bg);color:var(--msg-bot-text);border-bottom-left-radius:10px;border:1px solid var(--border-subtle)}.message-wrapper.streaming .message-bubble{border-color:color-mix(in oklch,var(--accent-primary) 24%,var(--border-subtle));box-shadow:var(--shadow-1),0 0 0 1px color-mix(in oklch,var(--accent-primary) 8%,transparent)}.message-wrapper.streaming .message-content{text-rendering:optimizeLegibility}.message-wrapper.loading .message-bubble{background:linear-gradient(90deg,color-mix(in oklch,var(--msg-bot-bg) 100%,transparent) 25%,color-mix(in oklch,var(--accent-glow) 100%,var(--msg-bot-bg)),color-mix(in oklch,var(--msg-bot-bg) 100%,transparent) 75%);background-size:200% 100%;animation:shimmer 1.8s ease-in-out infinite;min-height:100px}.message-wrapper:hover .message-bubble{transform:translateY(-1px);box-shadow:var(--shadow-2);border-color:color-mix(in oklch,var(--accent-primary) 18%,var(--border-subtle))}.message-wrapper.user:hover .message-bubble{box-shadow:var(--shadow-2),0 0 20px color-mix(in oklch,var(--msg-user-bg) 30%,transparent)}.message-wrapper.bot:hover .message-bubble{box-shadow:var(--shadow-2),0 0 20px color-mix(in oklch,var(--accent-primary) 15%,transparent)}.link-preview-list{margin-top:var(--space-4);display:flex;flex-direction:column;gap:var(--space-3)}.link-preview-card{width:min(400px,100%);max-width:400px;display:flex;align-items:stretch;gap:var(--space-4);padding:var(--space-4);border-radius:14px;border:1px solid var(--border-subtle);background:color-mix(in oklch,var(--bg-secondary) 65%,transparent);text-decoration:none;color:inherit;box-shadow:var(--shadow-1);transition:transform var(--duration-base),box-shadow var(--duration-base),border-color var(--duration-base),background var(--duration-base)}.message-wrapper.bot .link-preview-card{background:color-mix(in oklch,var(--msg-bot-bg) 82%,var(--bg-primary))}.link-preview-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:color-mix(in oklch,var(--accent-primary) 20%,var(--border-subtle));background:color-mix(in oklch,var(--bg-secondary) 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saturate(120%)}.link-preview-favicon{width:16px;height:16px;display:block}.link-preview-body{min-width:0;display:flex;flex-direction:column;gap:4px}.link-preview-top{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);font-size:11px;color:var(--text-tertiary);letter-spacing:.02em;text-transform:none}.link-preview-domain{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.link-preview-ext{flex-shrink:0;opacity:.85;color:var(--text-tertiary)}.link-preview-ext-icon{display:block}.link-preview-title{font-size:var(--text-sm);font-weight:650;color:var(--text-primary);line-height:1.25;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.link-preview-desc{font-size:var(--text-xs);color:var(--text-secondary);line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.link-preview-card:hover .link-preview-ext{opacity:1;color:var(--accent-primary)}@media (max-width: 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oklch,var(--accent-primary) 10%,transparent)}.reasoning-section summary::marker{color:var(--accent-primary)}.reasoning-section-content{padding:var(--space-4) var(--space-5);border-top:1px solid var(--border-medium);background:color-mix(in oklch,var(--bg-primary) 90%,var(--bg-tertiary));font-family:var(--font-mono);font-size:.85em;line-height:1.65;white-space:pre-wrap;word-break:break-word;color:var(--text-secondary);max-height:500px;overflow-y:auto;min-height:40px}.reasoning-section-content:empty:after{content:"Thinking...";color:var(--text-tertiary);font-style:italic;animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{0%,to{opacity:.5}50%{opacity:1}}.reasoning-section-content::-webkit-scrollbar{width:4px}.reasoning-section-content::-webkit-scrollbar-track{background:transparent}.reasoning-section-content::-webkit-scrollbar-thumb{background:var(--border-medium);border-radius:2px}.session-separator{display:flex;align-items:center;justify-content:center;margin:var(--space-8) 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sealReveal{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}@keyframes titleReveal{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes textReveal{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@keyframes suggestionsReveal{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.quick-actions{display:flex;gap:var(--space-4);margin-top:var(--space-8);flex-wrap:wrap;justify-content:center}.action-card{display:flex;flex-direction:column;align-items:center;justify-content:center;width:100px;height:100px;background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:16px;cursor:pointer;transition:transform var(--duration-base),background-color var(--duration-base),border-color var(--duration-base),box-shadow var(--duration-base);gap:var(--space-2);opacity:0;box-shadow:var(--shadow-1);animation:suggestionsReveal var(--duration-slow) 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