:root{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Helvetica Neue,sans-serif;line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}[data-theme=light]{--bg-primary: #ffffff;--bg-secondary: #f5f5f5;--bg-tertiary: #ebebeb;--bg-hover: #e0e0e0;--bg-sidebar: #fafafa;--bg-message-user: #138808;--bg-message-assistant: #f0f0f0;--text-primary: #1a1a1a;--text-secondary: #666666;--text-tertiary: #999999;--text-on-accent: #ffffff;--border-primary: #e0e0e0;--border-secondary: #d0d0d0;--accent-primary: #FF9933;--accent-secondary: #138808;--accent-tertiary: #000080;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .07);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .1)}[data-theme=dark]{--bg-primary: #0a0a0a;--bg-secondary: #1a1a1a;--bg-tertiary: #2a2a2a;--bg-hover: #333333;--bg-sidebar: #121212;--bg-message-user: #1a5c13;--bg-message-assistant: #1e1e1e;--text-primary: #e0e0e0;--text-secondary: #b0b0b0;--text-tertiary: #808080;--text-on-accent: #ffffff;--border-primary: #2a2a2a;--border-secondary: #3a3a3a;--accent-primary: #FF9933;--accent-secondary: #4CAF50;--accent-tertiary: #5C6BC0;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .5)}*{margin:0;padding:0;box-sizing:border-box}body{margin:0;display:flex;min-width:320px;min-height:100vh;background-color:var(--bg-primary);color:var(--text-primary);transition:background-color .3s ease,color .3s ease}#root{width:100%;height:100vh;overflow:hidden}button{font-family:inherit;cursor:pointer;transition:all .2s ease;border:none;background:none}button:hover{opacity:.8}button:active{transform:scale(.98)}input,textarea{font-family:inherit;background-color:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-primary);transition:all .2s ease}input:focus,textarea:focus{outline:none;border-color:var(--accent-primary)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-secondary);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}.logo-gradient{background:linear-gradient(135deg,var(--accent-primary) 0%,var(--accent-secondary) 50%,var(--accent-tertiary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-weight:700}.sidebar-overlay{display:none;position:fixed;inset:0;background:#00000080;z-index:998}.sidebar{width:280px;height:100vh;background:var(--bg-sidebar);border-right:1px solid var(--border-primary);display:flex;flex-direction:column;transition:transform .3s ease}.sidebar-header{padding:16px;border-bottom:1px solid var(--border-primary);display:flex;gap:8px;align-items:center}.new-chat-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;padding:12px 16px;background:var(--accent-primary);color:var(--text-on-accent);border-radius:8px;font-weight:500;font-size:14px}.close-sidebar-btn{display:none;padding:8px;color:var(--text-secondary);border-radius:6px}.close-sidebar-btn:hover{background:var(--bg-hover)}.conversations-list{flex:1;overflow-y:auto;padding:8px}.loading-state,.empty-state{padding:24px;text-align:center;color:var(--text-tertiary);font-size:14px}.conversation-item{display:flex;align-items:center;gap:8px;padding:12px;border-radius:8px;cursor:pointer;margin-bottom:4px;transition:background .2s}.conversation-item:hover{background:var(--bg-hover)}.conversation-item.active{background:var(--bg-tertiary)}.conversation-content{flex:1;min-width:0}.conversation-title{font-size:14px;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conversation-date{font-size:12px;color:var(--text-tertiary);margin-top:2px}.delete-btn{padding:6px;color:var(--text-tertiary);opacity:0;transition:opacity .2s;border-radius:4px}.conversation-item:hover .delete-btn{opacity:1}.delete-btn:hover{color:#f44;background:#ff44441a}.mobile-only{display:none}@media(max-width:768px){.sidebar-overlay{display:block;opacity:0;pointer-events:none;transition:opacity .3s ease}.sidebar-overlay.open{opacity:1;pointer-events:all}.sidebar{position:fixed;top:0;left:0;z-index:999;transform:translate(-100%)}.sidebar.open{transform:translate(0)}.mobile-only{display:block}.close-sidebar-btn{display:flex}}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(/assets/KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(/assets/KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(/assets/KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(/assets/KaTeX_Fraktur-Regular-CB_wures.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(/assets/KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(/assets/KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(/assets/KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(/assets/KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(/assets/KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(/assets/KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(/assets/KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(/assets/KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(/assets/KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(/assets/KaTeX_Math-Italic-flOr_0UB.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(/assets/KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(/assets/KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(/assets/KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(/assets/KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(/assets/KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(/assets/KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(/assets/KaTeX_Size1-Regular-Dbsnue_I.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(/assets/KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(/assets/KaTeX_Size2-Regular-B7gKUWhC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,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) format("woff2"),url(/assets/KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(/assets/KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(/assets/KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(/assets/KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(/assets/KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf) format("truetype")}.katex{font: 1.21em KaTeX_Main,Times New Roman,serif;line-height:1.2;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.16.25"}.katex .katex-mathml{clip:rect(1px,1px,1px,1px);border:0;height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.newline{display:block}.katex .base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.katex .base,.katex .strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{display:inline-flex;flex-direction:row}.katex .thinbox{max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.root{margin-left:.2777777778em;margin-right:-.5555555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.6666666667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.8571428571em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.5542857143em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.8888888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.7644444444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.8331726133em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.8336012862em}.katex .fontsize-ensurer.reset-size11.size11,.katex .sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{display:inline-block;width:.12em}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.katex .overlay{display:block}.katex .mtable .vertical-separator{display:inline-block;min-width:1px}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .stretchy:after,.katex .stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{border:.04em solid;box-sizing:border-box}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}.message-list{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:16px}.welcome-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;max-width:800px;margin:0 auto;text-align:center;padding:48px 24px}.welcome-logo{margin-bottom:24px}.logo-icon{font-size:48px;display:flex;align-items:center;justify-content:center}.welcome-title{font-size:36px;font-weight:700;margin-bottom:12px;background:linear-gradient(135deg,var(--accent-primary) 0%,var(--accent-secondary) 50%,var(--accent-tertiary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.welcome-subtitle{font-size:18px;color:var(--text-secondary);margin-bottom:48px}.welcome-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px;width:100%;max-width:700px}.feature-card{padding:24px;background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:12px;transition:transform .2s,box-shadow .2s}.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.feature-icon{font-size:32px;margin-bottom:12px}.feature-title{font-size:16px;font-weight:600;margin-bottom:8px;color:var(--text-primary)}.feature-desc{font-size:14px;color:var(--text-secondary)}.message{display:flex;gap:16px;max-width:900px;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.user{align-self:flex-end;flex-direction:row-reverse}.message-avatar{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--text-on-accent);font-weight:600}.message.user .message-avatar{background:var(--bg-message-user)}.message.assistant .message-avatar{background:var(--bg-secondary);border:1px solid var(--border-primary)}.message-content{flex:1;min-width:0}.message-images{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:8px}.message-image{max-width:300px;max-height:300px;border-radius:8px;object-fit:contain;cursor:pointer;transition:transform .2s;border:1px solid var(--border-primary)}.message-image:hover{transform:scale(1.02)}.message-text{padding:14px 18px;border-radius:12px;line-height:1.6;word-wrap:break-word}.message-text>*:first-child{margin-top:0}.message-text>*:last-child{margin-bottom:0}.message-text p{margin:.8em 0}.message-text code{font-family:Courier New,Courier,monospace;font-size:.9em;padding:2px 6px;border-radius:4px;background:#0000001a}.message.user .message-text code{background:#fff3}.message-text pre{margin:12px 0;padding:0;border-radius:8px;overflow:hidden}.message-text pre code{background:none;padding:0;border-radius:0;display:block}.message-text ul,.message-text ol{margin:.8em 0;padding-left:24px}.message-text li{margin:.4em 0}.message-text blockquote{margin:12px 0;padding-left:16px;border-left:4px solid var(--border-primary);color:var(--text-secondary)}.message-text table{border-collapse:collapse;margin:12px 0;width:100%}.message-text th,.message-text td{border:1px solid var(--border-primary);padding:8px 12px;text-align:left}.message-text th{background:var(--bg-secondary);font-weight:600}.message-text a{color:var(--accent-primary);text-decoration:underline}.message-text a:hover{opacity:.8}.message-text .katex{font-size:1.1em}.message-text .katex-display{margin:16px 0;overflow-x:auto;overflow-y:hidden}.message-text h1,.message-text h2,.message-text h3,.message-text h4,.message-text h5,.message-text h6{margin-top:1.2em;margin-bottom:.6em;font-weight:600;line-height:1.3}.message-text h1{font-size:1.8em}.message-text h2{font-size:1.5em}.message-text h3{font-size:1.3em}.message-text h4{font-size:1.1em}.message-text h5{font-size:1em}.message-text h6{font-size:.9em}.message-text hr{margin:16px 0;border:none;border-top:1px solid var(--border-primary)}.message.user .message-text{background:var(--bg-message-user);color:var(--text-on-accent)}.message.assistant .message-text{background:var(--bg-message-assistant);color:var(--text-primary);border:1px solid var(--border-primary)}.typing-indicator{display:flex;gap:6px;padding:14px 18px;background:var(--bg-message-assistant);border:1px solid var(--border-primary);border-radius:12px;width:fit-content}.typing-indicator span{width:8px;height:8px;border-radius:50%;background:var(--text-tertiary);animation:typing 1.4s infinite}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-10px)}}.code-block-wrapper{margin:12px 0;border-radius:8px;overflow:hidden;border:1px solid var(--border-primary)}.code-block-header{display:flex;justify-content:space-between;align-items:center;padding:8px 16px;background:var(--bg-secondary);border-bottom:1px solid var(--border-primary)}.code-language{font-size:12px;font-weight:600;text-transform:uppercase;color:var(--text-secondary);letter-spacing:.5px}.code-actions{display:flex;gap:8px}.code-action-btn{display:flex;align-items:center;gap:6px;padding:6px 12px;background:transparent;border:1px solid var(--border-primary);border-radius:6px;color:var(--text-primary);font-size:13px;font-weight:500;cursor:pointer;transition:all .2s}.code-action-btn:hover{background:var(--bg-tertiary);border-color:var(--accent-primary)}.code-action-btn svg{width:16px;height:16px}.preview-btn:hover{color:var(--accent-primary)}.copy-btn:hover{color:var(--accent-secondary)}.html-preview-modal{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;padding:24px;animation:modalFadeIn .2s ease}@keyframes modalFadeIn{0%{opacity:0}to{opacity:1}}.html-preview-content{background:var(--bg-primary);border-radius:16px;width:95vw;max-width:1800px;height:95vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:var(--shadow-xl);animation:modalSlideIn .3s ease}@keyframes modalSlideIn{0%{transform:scale(.95) translateY(20px)}to{transform:scale(1) translateY(0)}}.html-preview-header{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;border-bottom:1px solid var(--border-primary)}.html-preview-header h3{margin:0;font-size:18px;font-weight:600;color:var(--text-primary)}.close-preview-btn{background:transparent;border:none;color:var(--text-secondary);cursor:pointer;padding:8px;border-radius:8px;transition:all .2s;display:flex;align-items:center;justify-content:center}.close-preview-btn:hover{background:var(--bg-secondary);color:var(--text-primary)}.html-preview-body{flex:1;overflow:hidden;padding:24px;background:#fff}.html-preview-iframe{width:100%;height:100%;border:none;border-radius:8px;background:#fff}@media(max-width:768px){.message-list{padding:16px}.welcome-title{font-size:28px}.welcome-subtitle{font-size:16px}.welcome-features{grid-template-columns:1fr}.message{max-width:100%}.code-block-header{flex-direction:column;align-items:flex-start;gap:8px}.code-actions{width:100%;justify-content:flex-end}.html-preview-modal{padding:12px}.html-preview-content{max-height:95vh}.html-preview-header,.html-preview-body{padding:16px}}.message-input-container{border-top:1px solid var(--border-primary);background:var(--bg-primary);padding:16px 24px}.image-preview-container{max-width:900px;margin:0 auto 12px;display:flex;gap:12px;flex-wrap:wrap;padding:12px;background:var(--bg-secondary);border-radius:12px}.image-preview{position:relative;width:120px;height:120px;border-radius:8px;overflow:hidden;border:2px solid var(--border-primary)}.image-preview img{width:100%;height:100%;object-fit:cover}.remove-image{position:absolute;top:4px;right:4px;width:24px;height:24px;border-radius:50%;background:#000000b3;color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;cursor:pointer;transition:background .2s}.remove-image:hover:not(:disabled){background:#f00c}.message-input-form{max-width:900px;margin:0 auto;display:flex;gap:12px;align-items:flex-end;background:var(--bg-secondary);border:2px solid var(--border-primary);border-radius:12px;padding:12px;transition:border-color .2s}.message-input-form:focus-within{border-color:var(--accent-primary)}.message-textarea{flex:1;min-height:24px;max-height:200px;padding:8px 0;border:none;background:transparent;resize:none;font-size:15px;line-height:1.6;align-self:center}.message-textarea:focus{outline:none;border:none}.message-textarea::placeholder{color:var(--text-tertiary)}.attach-button{width:40px;height:40px;border-radius:8px;background:transparent;color:var(--text-secondary);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .2s,color .2s,transform .1s;border:none;cursor:pointer}.attach-button:hover:not(:disabled){background:var(--bg-tertiary);color:var(--text-primary);transform:scale(1.05)}.attach-button:active:not(:disabled){transform:scale(.95)}.attach-button:disabled{opacity:.4;cursor:not-allowed}.voice-input-wrapper{position:relative;display:flex;align-items:center;gap:4px}.voice-button{width:40px;height:40px;border-radius:8px;background:transparent;color:var(--text-secondary);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .2s;border:none;cursor:pointer;position:relative}.voice-button:hover:not(:disabled){background:var(--bg-tertiary);color:var(--text-primary);transform:scale(1.05)}.voice-button.recording{background:linear-gradient(135deg,#ff3b3b,#ff6b3b);color:#fff;animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{0%,to{transform:scale(1);box-shadow:0 0 #ff3b3bb3}50%{transform:scale(1.05);box-shadow:0 0 0 8px #ff3b3b00}}.voice-button:active:not(:disabled){transform:scale(.95)}.voice-button:disabled{opacity:.4;cursor:not-allowed}.language-selector-button{width:28px;height:28px;border-radius:6px;background:var(--bg-tertiary);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;border:none;cursor:pointer;transition:all .2s}.language-selector-button:hover:not(:disabled){background:var(--accent-primary);color:#fff;transform:scale(1.1)}.language-selector-button:disabled{opacity:.4;cursor:not-allowed}.language-selector-dropdown{position:absolute;bottom:55px;left:0;background:var(--bg-primary);border:2px solid var(--border-primary);border-radius:12px;box-shadow:var(--shadow-xl);min-width:200px;max-height:400px;overflow-y:auto;z-index:1000;animation:slideUp .2s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.language-option{width:100%;padding:12px 16px;text-align:left;background:transparent;border:none;color:var(--text-primary);cursor:pointer;transition:background .2s;display:flex;align-items:center;justify-content:space-between;font-size:14px;border-bottom:1px solid var(--border-primary)}.language-option:last-child{border-bottom:none}.language-option:hover{background:var(--bg-hover)}.language-option.active{background:var(--bg-tertiary);color:var(--accent-primary);font-weight:600}.language-option svg{flex-shrink:0}.send-button{width:40px;height:40px;border-radius:8px;background:var(--accent-primary);color:var(--text-on-accent);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .2s,transform .1s}.send-button:hover:not(:disabled){opacity:.9;transform:scale(1.05)}.send-button:active:not(:disabled){transform:scale(.95)}.send-button:disabled{opacity:.4;cursor:not-allowed}.input-footer{text-align:center;margin-top:12px}.footer-text{font-size:12px;color:var(--text-tertiary)}.language-selector-dropdown::-webkit-scrollbar{width:6px}.language-selector-dropdown::-webkit-scrollbar-track{background:transparent}.language-selector-dropdown::-webkit-scrollbar-thumb{background:var(--border-primary);border-radius:3px}.language-selector-dropdown::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}@media(max-width:768px){.message-input-container{padding:12px 16px}.message-input-form{padding:10px;gap:8px}.message-textarea{font-size:16px}.voice-button,.attach-button,.send-button{width:36px;height:36px}.language-selector-button{width:24px;height:24px}.language-selector-dropdown{left:0;min-width:180px}}.settings-overlay{position:fixed;inset:0;background:#00000080;z-index:1000;animation:fadeIn .2s ease}.settings-panel{position:fixed;top:0;right:0;width:100%;max-width:400px;height:100vh;background:var(--bg-primary);border-left:1px solid var(--border-primary);z-index:1001;display:flex;flex-direction:column;animation:slideInRight .3s ease;box-shadow:var(--shadow-lg)}@keyframes slideInRight{0%{transform:translate(100%)}to{transform:translate(0)}}.settings-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--border-primary)}.settings-header h2{font-size:24px;font-weight:700;color:var(--text-primary)}.close-btn{padding:8px;color:var(--text-secondary);border-radius:8px;transition:background .2s}.close-btn:hover{background:var(--bg-hover)}.settings-content{flex:1;overflow-y:auto;padding:24px}.settings-section{margin-bottom:32px}.settings-section h3{font-size:14px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-tertiary);margin-bottom:16px}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.edit-btn{padding:6px 14px;background:var(--accent-primary);color:var(--text-on-accent);border-radius:8px;font-size:13px;font-weight:600;transition:opacity .2s}.edit-btn:hover{opacity:.9}.settings-item{background:var(--bg-secondary);padding:16px;border-radius:12px;border:1px solid var(--border-primary);margin-bottom:12px}.settings-item label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:8px}.settings-value{font-size:15px;color:var(--text-primary);font-weight:500}.settings-item input{width:100%;padding:10px 12px;background:var(--bg-primary);border:1px solid var(--border-primary);border-radius:8px;color:var(--text-primary);font-size:14px;font-family:inherit;transition:border-color .2s}.settings-item input:focus{outline:none;border-color:var(--accent-primary)}.settings-item input:disabled{opacity:.6;cursor:not-allowed}.profile-actions{display:flex;gap:12px;margin-top:20px}.cancel-btn,.save-btn{flex:1;padding:12px 20px;border-radius:8px;font-size:14px;font-weight:600;transition:opacity .2s,transform .1s}.cancel-btn{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-primary)}.cancel-btn:hover:not(:disabled){background:var(--bg-hover)}.save-btn{background:var(--accent-primary);color:var(--text-on-accent)}.save-btn:hover:not(:disabled){opacity:.9}.cancel-btn:active:not(:disabled),.save-btn:active:not(:disabled){transform:scale(.98)}.cancel-btn:disabled,.save-btn:disabled{opacity:.6;cursor:not-allowed}.settings-error{padding:12px 16px;background:#ff44441a;border:1px solid rgba(255,68,68,.3);border-radius:8px;color:#f44;font-size:14px;margin-bottom:16px}.settings-success{padding:12px 16px;background:#22c55e1a;border:1px solid rgba(34,197,94,.3);border-radius:8px;color:#22c55e;font-size:14px;margin-bottom:16px}.theme-selector{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:8px}.theme-option{display:flex;flex-direction:column;align-items:center;gap:8px;padding:16px 12px;background:var(--bg-tertiary);border:2px solid var(--border-primary);border-radius:10px;color:var(--text-secondary);font-size:14px;font-weight:500;transition:all .2s}.theme-option:hover{border-color:var(--accent-primary);background:var(--bg-hover)}.theme-option.active{border-color:var(--accent-primary);background:var(--accent-primary);color:var(--text-on-accent)}.settings-hint{font-size:12px;color:var(--text-tertiary);margin-top:12px;line-height:1.5}.logout-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:10px;padding:14px 20px;background:#f44;color:#fff;border-radius:10px;font-weight:600;font-size:15px;transition:opacity .2s,transform .1s}.logout-btn:hover:not(:disabled){opacity:.9}.logout-btn:active:not(:disabled){transform:scale(.98)}.logout-btn:disabled{opacity:.6;cursor:not-allowed}.security-info{display:flex;flex-direction:column;gap:16px}.security-info-item{display:flex;gap:16px;padding:16px;background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:12px;align-items:flex-start}.security-info-item svg{flex-shrink:0;color:#22c55e;margin-top:2px}.security-info-item h4{font-size:14px;font-weight:600;color:var(--text-primary);margin-bottom:6px}.security-info-item p{font-size:13px;color:var(--text-secondary);line-height:1.6}@media(max-width:768px){.settings-panel{max-width:100%}.settings-content{padding:20px 16px}.settings-header{padding:16px 20px}.security-info-item{padding:14px}.security-info-item h4{font-size:13px}.security-info-item p{font-size:12px}}.code-editor-container{height:100%;width:100%;overflow:hidden}.code-preview-container{height:100%;width:100%;position:relative;overflow:hidden;background:var(--bg-primary)}.preview-iframe{width:100%;height:100%;border:none;background:#fff}.preview-error{position:absolute;top:0;left:0;right:0;padding:16px;background:#e74c3c1a;color:#e74c3c;border-bottom:1px solid #e74c3c;font-family:Courier New,monospace;font-size:13px;z-index:10;white-space:pre-wrap;word-break:break-word}.dark .code-preview-container{background:var(--bg-secondary)}.dark .preview-iframe{background:#1e1e1e}.file-browser{display:flex;flex-direction:column;height:100%;background:var(--surface-primary);border-right:1px solid var(--border-color);overflow:hidden}.browser-header{padding:16px;border-bottom:1px solid var(--border-color);background:var(--surface-secondary)}.browser-header h3{margin:0;font-size:14px;font-weight:600;color:var(--text-primary)}.browser-content{flex:1;overflow-y:auto;padding:8px 0}.node-item{display:flex;align-items:center;gap:8px;padding:8px 12px;cursor:pointer;transition:background .2s;-webkit-user-select:none;user-select:none;font-size:13px;color:var(--text-primary)}.node-item:hover{background:var(--surface-hover)}.node-item.selected{background:var(--accent-primary);color:#fff}.node-item.selected:hover{background:var(--accent-secondary)}.folder-icon,.file-icon{font-size:16px;flex-shrink:0}.node-name{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.folder-children{display:flex;flex-direction:column}.empty-state{padding:32px 16px;text-align:center;color:var(--text-secondary)}.empty-state p{margin:8px 0}.empty-state .hint{font-size:12px;color:var(--text-tertiary)}.project-import-modal{position:fixed;inset:0;z-index:1000;display:flex;align-items:center;justify-content:center}.modal-overlay{position:absolute;inset:0;background:#000000bf;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.modal-content{position:relative;background:var(--surface-primary);border-radius:16px;width:90%;max-width:600px;max-height:80vh;overflow:hidden;box-shadow:0 20px 60px #00000080;display:flex;flex-direction:column}.loading-overlay{position:absolute;inset:0;background:#000000d9;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:10;display:flex;align-items:center;justify-content:center}.spinner-container{display:flex;flex-direction:column;align-items:center;gap:16px}.loading-spinner{animation:spin 1s linear infinite;color:var(--accent-primary)}.loading-text{color:#fff;font-size:16px;font-weight:500;margin:0;text-align:center}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:24px;border-bottom:1px solid var(--border-color)}.modal-header h2{margin:0;font-size:20px;font-weight:600;color:var(--text-primary)}.close-btn{background:none;border:none;font-size:24px;color:var(--text-secondary);cursor:pointer;padding:4px 8px;line-height:1;transition:color .2s}.close-btn:hover:not(:disabled){color:var(--text-primary)}.close-btn:disabled{opacity:.5;cursor:not-allowed}.import-tabs{display:flex;gap:8px;padding:16px 24px 0;border-bottom:1px solid var(--border-color)}.import-tabs .tab{padding:12px 24px;background:none;border:none;border-bottom:2px solid transparent;font-size:14px;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:all .2s}.import-tabs .tab:hover{color:var(--text-primary)}.import-tabs .tab.active{color:var(--accent-primary);border-bottom-color:var(--accent-primary)}.import-body{padding:32px 24px;flex:1;overflow-y:auto}.local-import,.github-import{display:flex;flex-direction:column;gap:20px}.description{margin:0;font-size:14px;color:var(--text-secondary);line-height:1.6}.file-input-label{display:inline-block;cursor:pointer}.file-input-label input[type=file]{display:none}.file-input-label .button-text{display:inline-flex;align-items:center;justify-content:center;padding:12px 32px;background:var(--accent-primary);color:#fff;border-radius:8px;font-size:14px;font-weight:600;transition:all .3s ease;box-shadow:0 2px 8px #f603}.file-input-label .button-text:hover{background:var(--accent-secondary);transform:translateY(-2px);box-shadow:0 4px 16px #f606}.github-url-input{width:100%;padding:12px 16px;background:var(--surface-secondary);border:1px solid var(--border-color);border-radius:8px;font-size:14px;color:var(--text-primary);transition:all .2s}.github-url-input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #ff66001a}.github-url-input::placeholder{color:var(--text-tertiary)}.token-section{margin:16px 0}.token-toggle{padding:10px 16px;background:var(--surface-secondary);color:var(--text-secondary);border:1px solid var(--border-color);border-radius:6px;font-size:13px;cursor:pointer;transition:all .2s;width:100%;text-align:left}.token-toggle:hover:not(:disabled){background:var(--surface-tertiary);border-color:var(--accent-primary)}.token-toggle:disabled{opacity:.5;cursor:not-allowed}.token-input-wrapper{margin-top:12px;padding:16px;background:var(--surface-secondary);border-radius:8px;border:1px solid var(--border-color)}.github-token-input{width:100%;padding:10px 12px;border:1px solid var(--border-color);border-radius:6px;background:var(--surface-primary);color:var(--text-primary);font-size:13px;font-family:SF Mono,Monaco,Courier New,monospace;transition:border-color .2s}.github-token-input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #ff66001a}.token-hint{margin:8px 0 0;font-size:12px;color:var(--text-tertiary);line-height:1.4}.token-hint a{color:var(--accent-primary);text-decoration:none}.token-hint a:hover{text-decoration:underline}.import-btn{padding:12px 32px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 2px 8px #f603}.import-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 16px #f606}.import-btn:disabled{opacity:.6;cursor:not-allowed;background:linear-gradient(135deg,#999,#777);box-shadow:none;transform:none}.error-message{padding:12px 16px;background:#fee;border:1px solid #fcc;border-radius:8px;color:#c33;font-size:14px}.developer-panel{display:flex;flex-direction:column;height:100vh;background:var(--bg-primary);overflow:hidden}.panel-header{display:flex;align-items:center;gap:16px;padding:24px 32px;border-bottom:1px solid var(--border-primary);background:var(--bg-primary)}.header-content{flex:1}.header-actions{display:flex;gap:12px;align-items:center}.back-btn{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border:none;background:var(--bg-secondary);color:var(--text-primary);border-radius:8px;cursor:pointer;transition:all .2s;flex-shrink:0}.back-btn:hover{background:var(--accent-primary);color:#fff}.import-btn,.toggle-browser-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;background:var(--accent-primary);color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 2px 8px #f603}.toggle-browser-btn{background:var(--bg-secondary);color:var(--text-primary);box-shadow:none;border:1px solid var(--border-primary)}.import-btn:hover{transform:translateY(-2px);box-shadow:0 4px 16px #f606}.toggle-browser-btn:hover{background:var(--surface-hover);border-color:var(--accent-primary)}.header-content h2{font-size:24px;font-weight:600;color:var(--text-primary);margin-bottom:4px}.header-content p{font-size:14px;color:var(--text-secondary)}.ai-prompt-section{padding:20px 32px;border-bottom:1px solid var(--border-primary);background:var(--bg-secondary)}.prompt-container{display:flex;gap:16px;align-items:stretch}.prompt-input{flex:1;padding:16px 20px;border:2px solid var(--border-primary);border-radius:12px;background:var(--bg-primary);color:var(--text-primary);font-size:15px;line-height:1.6;font-family:inherit;resize:vertical;min-height:100px;max-height:300px;transition:all .2s}.prompt-input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #ff99331a}.prompt-input:disabled{opacity:.5;cursor:not-allowed}.prompt-input::placeholder{color:var(--text-tertiary)}.generate-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:56px;padding:12px 24px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .3s ease;white-space:nowrap;min-height:44px;box-shadow:0 2px 8px #f603}.generate-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 16px #f606}.generate-btn:active:not(:disabled){transform:translateY(0);box-shadow:0 1px 4px #f603}.generate-btn:disabled{opacity:.6;cursor:not-allowed;background:linear-gradient(135deg,#999,#777);box-shadow:none}.generation-error{display:flex;align-items:center;gap:8px;margin-top:12px;padding:12px 16px;background:#ef44441a;border:1px solid rgba(239,68,68,.3);border-radius:8px;color:#ef4444;font-size:13px}.split-container{display:flex;flex:1;overflow:hidden;position:relative}.file-browser-pane{width:280px;min-width:280px;max-width:400px;flex-shrink:0;border-right:1px solid var(--border-primary);overflow:hidden}.editor-pane,.preview-pane{display:flex;flex-direction:column;overflow:hidden;background:var(--bg-primary)}.pane-header{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid var(--border-primary);background:var(--bg-secondary)}.pane-title{font-size:13px;font-weight:600;color:var(--text-primary);text-transform:uppercase;letter-spacing:.5px}.pane-badge{font-size:11px;padding:4px 8px;background:var(--accent-primary);color:#fff;border-radius:4px;font-weight:500}.pane-content{flex:1;overflow:hidden}.split-divider{width:8px;background:var(--bg-secondary);cursor:col-resize;position:relative;border-left:1px solid var(--border-primary);border-right:1px solid var(--border-primary);transition:background .2s;display:flex;align-items:center;justify-content:center}.split-divider:hover{background:var(--accent-primary)}.divider-handle{width:3px;height:40px;background:#ffffff4d;border-radius:2px}.split-divider:hover .divider-handle{background:#fff}@media(max-width:768px){.split-container{flex-direction:column}.editor-pane,.preview-pane{width:100%!important;height:50%}.split-divider{width:100%;height:8px;cursor:row-resize;border-left:none;border-right:none;border-top:1px solid var(--border-primary);border-bottom:1px solid var(--border-primary)}.divider-handle{width:40px;height:3px}.panel-header{padding:16px 20px}.header-content h2{font-size:20px}.ai-prompt-section{padding:16px 20px}.prompt-container{flex-direction:column;gap:12px}.prompt-input{min-height:80px}.generate-btn{width:100%;justify-content:center;min-height:48px}}.quiz-generator{width:100%;height:100vh;display:flex;flex-direction:column;background:var(--bg-primary)}.quiz-generator .back-btn{flex-shrink:0;white-space:nowrap}.generator-content{flex:1;overflow-y:auto;padding:32px 24px;max-width:800px;margin:0 auto;width:100%}.generator-form{background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:16px;padding:32px;margin-bottom:32px}.form-group{margin-bottom:24px}.form-group label{display:block;font-size:14px;font-weight:600;color:var(--text-primary);margin-bottom:8px}.form-group input[type=text]{width:100%;padding:12px 16px;background:var(--bg-primary);border:1px solid var(--border-primary);border-radius:8px;color:var(--text-primary);font-size:15px;font-family:inherit;transition:border-color .2s}.form-group input[type=text]:focus{outline:none;border-color:var(--accent-primary)}.form-hint{font-size:13px;color:var(--text-tertiary);margin-top:6px}.suggested-topics{margin:24px 0}.topics-label{font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:12px}.topics-grid{display:flex;flex-wrap:wrap;gap:8px}.topic-chip{padding:8px 16px;background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:20px;font-size:13px;font-weight:500;color:var(--text-primary);transition:all .2s}.topic-chip:hover:not(:disabled){background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.topic-chip:disabled{opacity:.5;cursor:not-allowed}.difficulty-selector{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:8px}.difficulty-btn{display:flex;flex-direction:column;align-items:center;gap:8px;padding:16px;background:var(--bg-tertiary);border:2px solid var(--border-primary);border-radius:12px;font-size:14px;font-weight:600;color:var(--text-primary);transition:all .2s}.difficulty-btn:hover:not(:disabled){border-color:var(--accent-primary);background:var(--bg-hover)}.difficulty-btn.active{border-color:var(--accent-primary);background:var(--accent-primary);color:#fff}.difficulty-btn:disabled{opacity:.5;cursor:not-allowed}.difficulty-icon{font-size:24px}.question-count-selector{display:flex;align-items:center;gap:16px;margin-top:8px}.question-count-selector input[type=range]{flex:1;height:8px;border-radius:4px;background:var(--bg-tertiary);outline:none;-webkit-appearance:none}.question-count-selector input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:var(--accent-primary);cursor:pointer}.question-count-selector input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--accent-primary);cursor:pointer;border:none}.count-display{font-size:18px;font-weight:700;color:var(--text-primary);min-width:120px;text-align:center;padding:8px 16px;background:var(--bg-tertiary);border-radius:8px}.generate-btn{display:flex;align-items:center;justify-content:center;gap:10px;padding:16px 24px;background:var(--accent-primary);color:#fff;border-radius:10px;font-weight:600;font-size:16px;transition:opacity .2s,transform .1s;margin-top:32px}.generate-btn:hover:not(:disabled){opacity:.9}.generate-btn:active:not(:disabled){transform:scale(.98)}.generate-btn:disabled{opacity:.6;cursor:not-allowed}.spinner{animation:spin 1s linear infinite}.error-message{padding:12px 16px;background:#ff44441a;border:1px solid rgba(255,68,68,.3);border-radius:8px;color:#f44;font-size:14px;margin-bottom:20px}.generator-info{background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:16px;padding:24px}.info-card{display:flex;gap:16px;align-items:flex-start}.info-card svg{flex-shrink:0;color:var(--accent-primary)}.info-card h3{font-size:16px;font-weight:600;color:var(--text-primary);margin-bottom:12px}.info-card ul{list-style:none;padding:0;margin:0}.info-card li{font-size:14px;color:var(--text-secondary);padding:6px 0 6px 20px;position:relative}.info-card li:before{content:"•";position:absolute;left:0;color:var(--accent-primary);font-weight:700}@media(max-width:768px){.generator-content{padding:24px 16px}.generator-form{padding:24px 20px}.difficulty-selector{grid-template-columns:1fr}.difficulty-btn{flex-direction:row;justify-content:center}}.quiz-taker{width:100%;height:100vh;display:flex;flex-direction:column;background:var(--bg-primary)}.quiz-taker .back-btn{flex-shrink:0;white-space:nowrap}.quiz-taker.loading,.quiz-taker.error{align-items:center;justify-content:center}.error-state{text-align:center}.error-state p{color:var(--text-secondary);margin-bottom:16px}.quiz-info{flex:1}.quiz-info h1{font-size:20px;font-weight:700;color:var(--text-primary);margin-bottom:8px}.quiz-meta{display:flex;gap:8px;flex-wrap:wrap}.difficulty-badge,.category-badge{padding:4px 12px;border-radius:12px;font-size:12px;font-weight:600}.difficulty-badge{background:var(--accent-primary);color:#fff;text-transform:capitalize}.category-badge{background:var(--bg-tertiary);color:var(--text-secondary)}.error-banner{padding:12px 24px;background:#ff44441a;border-bottom:1px solid rgba(255,68,68,.3);color:#f44;font-size:14px}.quiz-progress{padding:16px 24px;border-bottom:1px solid var(--border-primary)}.progress-bar{height:8px;background:var(--bg-tertiary);border-radius:4px;overflow:hidden;margin-bottom:8px}.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-primary),var(--accent-secondary));transition:width .3s ease}.progress-text{font-size:13px;color:var(--text-secondary);text-align:center}.question-container{flex:1;overflow-y:auto;padding:32px 24px;max-width:800px;margin:0 auto;width:100%}.question-header{margin-bottom:16px}.question-number{display:inline-block;padding:6px 12px;background:var(--bg-tertiary);color:var(--text-secondary);border-radius:20px;font-size:12px;font-weight:600}.question-text{font-size:20px;font-weight:600;color:var(--text-primary);line-height:1.6;margin-bottom:32px}.options-list{display:flex;flex-direction:column;gap:12px;margin-bottom:32px}.option-btn{display:flex;align-items:center;gap:16px;padding:16px 20px;background:var(--bg-secondary);border:2px solid var(--border-primary);border-radius:12px;text-align:left;transition:all .2s;cursor:pointer}.option-btn:hover:not(:disabled){border-color:var(--accent-primary);background:var(--bg-hover)}.option-btn.selected{border-color:var(--accent-primary);background:#ff66001a}.option-btn:disabled{opacity:.6;cursor:not-allowed}.option-letter{flex-shrink:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);color:var(--text-primary);border-radius:50%;font-weight:700;font-size:14px}.option-btn.selected .option-letter{background:var(--accent-primary);color:#fff}.option-text{flex:1;font-size:15px;color:var(--text-primary);line-height:1.5}.check-icon{flex-shrink:0;color:var(--accent-primary)}.question-navigation{display:flex;justify-content:space-between;gap:16px}.nav-btn{display:flex;align-items:center;gap:8px;padding:12px 24px;background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:8px;font-size:14px;font-weight:600;color:var(--text-primary);transition:all .2s}.nav-btn:hover:not(:disabled){background:var(--bg-hover);border-color:var(--accent-primary)}.nav-btn.primary{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.nav-btn.primary:hover:not(:disabled){opacity:.9}.nav-btn:disabled{opacity:.5;cursor:not-allowed}.submit-btn{padding:12px 32px;background:linear-gradient(135deg,#22c55e,#16a34a);color:#fff;border-radius:8px;font-size:14px;font-weight:600;transition:opacity .2s}.submit-btn:hover:not(:disabled){opacity:.9}.submit-btn:disabled{opacity:.5;cursor:not-allowed}.answer-grid{display:flex;gap:8px;padding:16px 24px;border-top:1px solid var(--border-primary);overflow-x:auto;justify-content:center;flex-wrap:wrap}.answer-indicator{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:var(--bg-secondary);border:2px solid var(--border-primary);border-radius:8px;font-size:14px;font-weight:600;color:var(--text-secondary);transition:all .2s;cursor:pointer}.answer-indicator:hover:not(:disabled){border-color:var(--accent-primary)}.answer-indicator.answered{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.answer-indicator.current{border-color:var(--accent-primary);border-width:3px}.answer-indicator:disabled{opacity:.5;cursor:not-allowed}@media(max-width:768px){.question-container{padding:24px 16px}.question-text{font-size:18px}.question-navigation{flex-direction:column}.nav-btn{width:100%;justify-content:center}.submit-btn{width:100%}.answer-grid{padding:12px 16px}}.quiz-results{width:100%;height:100vh;display:flex;flex-direction:column;background:var(--bg-primary)}.quiz-results .back-btn{flex-shrink:0;white-space:nowrap}.results-content{flex:1;overflow-y:auto;padding:32px 24px;max-width:900px;margin:0 auto;width:100%}.score-card{text-align:center;padding:48px 32px;background:var(--bg-secondary);border:2px solid var(--border-primary);border-radius:20px;margin-bottom:32px}.score-card.excellent{background:linear-gradient(135deg,#22c55e1a,#16a34a0d);border-color:#22c55e4d}.score-card.good{background:linear-gradient(135deg,#3b82f61a,#2563eb0d);border-color:#3b82f64d}.score-card.needs-improvement{background:linear-gradient(135deg,#fb923c1a,#f973160d);border-color:#fb923c4d}.score-icon{display:inline-flex;margin-bottom:24px}.score-card.excellent .score-icon{color:#22c55e}.score-card.good .score-icon{color:#3b82f6}.score-card.needs-improvement .score-icon{color:#fb923c}.score-card h2{font-size:28px;font-weight:700;color:var(--text-primary);margin-bottom:16px}.score-main{margin-bottom:16px}.score-value{font-size:64px;font-weight:800;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.score-details{display:flex;justify-content:center;gap:24px;font-size:14px;color:var(--text-secondary)}.results-summary{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:32px}.summary-card{display:flex;align-items:center;gap:16px;padding:20px;background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:12px}.summary-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;border-radius:12px;flex-shrink:0}.summary-card.correct .summary-icon{background:#22c55e1a;color:#22c55e}.summary-card.incorrect .summary-icon{background:#ef44441a;color:#ef4444}.summary-card.accuracy .summary-icon{background:#3b82f61a;color:#3b82f6}.summary-content{display:flex;flex-direction:column;gap:4px}.summary-value{font-size:24px;font-weight:700;color:var(--text-primary)}.summary-label{font-size:13px;color:var(--text-secondary)}.answers-review{background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:16px;padding:24px}.answers-review h3{font-size:20px;font-weight:700;color:var(--text-primary);margin-bottom:20px}.answers-list{display:flex;flex-direction:column;gap:16px}.answer-item{padding:20px;background:var(--bg-primary);border:2px solid var(--border-primary);border-radius:12px}.answer-item.correct{border-color:#22c55e4d;background:#22c55e0d}.answer-item.incorrect{border-color:#ef44444d;background:#ef44440d}.answer-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.answer-number{font-size:12px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px}.answer-status{display:flex;align-items:center;gap:6px;font-size:13px;font-weight:600;padding:4px 12px;border-radius:12px}.answer-status.correct{background:#22c55e1a;color:#22c55e}.answer-status.incorrect{background:#ef44441a;color:#ef4444}.answer-question{font-size:16px;font-weight:600;color:var(--text-primary);line-height:1.6;margin-bottom:16px}.answer-details{display:flex;flex-direction:column;gap:12px}.answer-row{display:flex;gap:12px;font-size:14px}.answer-label{font-weight:600;color:var(--text-secondary);min-width:120px}.answer-value{color:var(--text-primary)}.answer-row.your-answer .answer-value{color:#ef4444}.answer-row.correct-answer .answer-value{color:#22c55e}.answer-explanation{display:flex;gap:12px;padding:12px 16px;background:var(--bg-tertiary);border-radius:8px;font-size:14px;color:var(--text-secondary);line-height:1.6}.answer-explanation svg{flex-shrink:0;color:var(--accent-primary);margin-top:2px}@media(max-width:768px){.results-content{padding:24px 16px}.score-card{padding:32px 20px}.score-card h2{font-size:24px}.score-value{font-size:48px}.score-details{flex-direction:column;gap:8px}.results-summary{grid-template-columns:1fr}.answers-review{padding:20px 16px}.answer-item{padding:16px}.answer-row{flex-direction:column;gap:4px}.answer-label{min-width:auto}}.quiz-history{width:100%;height:100vh;display:flex;flex-direction:column;background:var(--bg-primary)}.quiz-history .back-btn{flex-shrink:0;white-space:nowrap}.quiz-history.loading{align-items:center;justify-content:center}.loading-spinner{display:flex;flex-direction:column;align-items:center;gap:16px;color:var(--text-secondary)}.loading-spinner .spinner{animation:spin 1s linear infinite;color:var(--accent-primary)}.loading-spinner p{animation:none;transform:none}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.history-tabs{display:flex;gap:8px;padding:16px 24px;border-bottom:1px solid var(--border-primary)}.tab-btn{display:flex;align-items:center;gap:8px;padding:10px 20px;background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:8px;font-size:14px;font-weight:600;color:var(--text-secondary);transition:all .2s}.tab-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.tab-btn.active{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.history-content{flex:1;overflow-y:auto;padding:24px}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:80px 24px;text-align:center}.empty-state svg{color:var(--text-tertiary);margin-bottom:16px}.empty-state p{color:var(--text-secondary);font-size:16px;max-width:400px}.quiz-list,.attempts-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:16px}.quiz-card{padding:24px;background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:16px;transition:all .2s}.quiz-card:hover{border-color:var(--accent-primary);box-shadow:var(--shadow-lg)}.quiz-card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:16px}.quiz-card h3{font-size:18px;font-weight:700;color:var(--text-primary);margin-bottom:8px}.quiz-card-meta{display:flex;gap:8px;flex-wrap:wrap}.questions-badge{padding:4px 12px;border-radius:12px;font-size:12px;font-weight:600;background:var(--bg-tertiary);color:var(--text-secondary)}.delete-btn{padding:8px;color:var(--text-tertiary);border-radius:8px;transition:all .2s}.delete-btn:hover{color:#ef4444;background:#ef44441a}.quiz-card-stats{display:flex;gap:24px;margin-bottom:16px;padding-bottom:16px;border-bottom:1px solid var(--border-primary)}.stat{display:flex;flex-direction:column;gap:4px}.stat-label{font-size:12px;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.5px}.stat-value{font-size:18px;font-weight:700;color:var(--text-primary)}.retake-btn{width:100%;padding:12px 24px;background:var(--accent-primary);color:#fff;border-radius:8px;font-size:14px;font-weight:600;transition:opacity .2s}.retake-btn:hover{opacity:.9}.attempt-card{padding:20px;background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:12px;transition:all .2s}.attempt-card:hover{border-color:var(--accent-primary)}.attempt-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px}.attempt-header h4{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:4px}.attempt-date{font-size:13px;color:var(--text-tertiary)}.attempt-score{font-size:28px;font-weight:800;padding:8px 16px;border-radius:8px}.attempt-score.excellent{background:#22c55e1a;color:#22c55e}.attempt-score.good{background:#3b82f61a;color:#3b82f6}.attempt-score.poor{background:#fb923c1a;color:#fb923c}.attempt-details{display:flex;gap:12px;align-items:center;font-size:13px;color:var(--text-secondary);flex-wrap:wrap}@media(max-width:768px){.history-tabs{padding:12px 16px}.tab-btn{flex:1;justify-content:center}.tab-btn span{display:none}.history-content,.quiz-card,.attempt-card{padding:16px}.quiz-card-header{flex-direction:column;gap:12px}.delete-btn{align-self:flex-end}.quiz-card-stats{flex-wrap:wrap;gap:16px}.attempt-header{flex-direction:column;gap:12px}.attempt-score{align-self:flex-start}}.quiz-mode{width:100%;height:100vh;display:flex;flex-direction:column;background:var(--bg-primary)}.quiz-header{display:flex;align-items:center;gap:16px;padding:20px 24px;border-bottom:1px solid var(--border-primary);flex-shrink:0}.quiz-mode .back-btn{display:flex;align-items:center;gap:8px;color:var(--text-primary);background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:8px;font-size:14px;font-weight:500;transition:all .2s;white-space:nowrap;flex-shrink:0}.quiz-mode .back-btn:hover:not(:disabled){background:var(--bg-hover);border-color:var(--accent-primary)}.quiz-mode .back-btn:disabled{opacity:.5;cursor:not-allowed}.quiz-header h1{font-size:24px;font-weight:700;color:var(--text-primary);margin:0}.quiz-home{flex:1;overflow-y:auto;padding:40px 24px;max-width:1200px;margin:0 auto;width:100%}.quiz-hero{text-align:center;margin-bottom:48px}.quiz-hero-icon{margin-bottom:24px;color:var(--accent-primary)}.quiz-hero h2{font-size:36px;font-weight:700;color:var(--text-primary);margin-bottom:12px}.quiz-hero p{font-size:18px;color:var(--text-secondary)}.quiz-actions{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;margin-bottom:48px}.quiz-action-card{padding:32px 24px;background:var(--bg-secondary);border:2px solid var(--border-primary);border-radius:16px;text-align:center;transition:all .2s;cursor:pointer}.quiz-action-card:hover{border-color:var(--accent-primary);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.quiz-action-card.primary{background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:#fff;border-color:transparent}.quiz-action-card.primary h3,.quiz-action-card.primary p{color:#fff}.card-icon{margin-bottom:16px;color:inherit}.quiz-action-card h3{font-size:20px;font-weight:600;color:var(--text-primary);margin-bottom:8px}.quiz-action-card p{font-size:14px;color:var(--text-secondary)}.quiz-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}.stat-card{display:flex;gap:16px;padding:20px;background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:12px;align-items:flex-start}.stat-icon{color:#22c55e;flex-shrink:0}.stat-content h4{font-size:16px;font-weight:600;color:var(--text-primary);margin-bottom:4px}.stat-content p{font-size:14px;color:var(--text-secondary);line-height:1.5}@media(max-width:768px){.quiz-header{padding:16px 20px}.quiz-header h1{font-size:20px}.quiz-home{padding:24px 16px}.quiz-hero h2{font-size:28px}.quiz-hero p{font-size:16px}.quiz-actions,.quiz-stats{grid-template-columns:1fr}}.visual-builder{width:100%;height:100vh;display:flex;flex-direction:column;background:var(--bg-primary);overflow:hidden}.builder-header{display:flex;justify-content:space-between;align-items:center;padding:16px 24px;background:var(--bg-secondary);border-bottom:1px solid var(--border-primary);flex-shrink:0}.header-left{display:flex;align-items:center;gap:16px}.back-btn{display:flex;align-items:center;gap:8px;background:transparent;border:1px solid var(--border-primary);border-radius:8px;color:var(--text-primary);font-size:14px;font-weight:600;transition:all .2s}.back-btn:hover{background:var(--bg-hover)}.project-name-input{padding:8px 16px;background:var(--bg-primary);border:1px solid var(--border-primary);border-radius:8px;color:var(--text-primary);font-size:16px;font-weight:600;outline:none;min-width:250px}.project-name-input:focus{border-color:var(--accent-primary)}.header-actions{display:flex;gap:12px}.export-btn{display:flex;align-items:center;gap:8px;padding:10px 20px;background:var(--accent-primary);color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:600;transition:opacity .2s}.export-btn:hover{opacity:.9}.builder-main{display:flex;flex:1;overflow:hidden}.component-palette{width:280px;background:var(--bg-secondary);border-right:1px solid var(--border-primary);padding:24px;overflow-y:auto;flex-shrink:0}.component-palette h3{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:16px}.palette-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:32px}.palette-item{display:flex;flex-direction:column;align-items:center;gap:8px;padding:16px;background:var(--bg-primary);border:2px solid var(--border-primary);border-radius:12px;cursor:grab;transition:all .2s;-webkit-user-select:none;user-select:none}.palette-item:hover{border-color:var(--accent-primary);transform:translateY(-2px);box-shadow:var(--shadow-md)}.palette-item:active{cursor:grabbing;transform:translateY(0)}.palette-icon{font-size:32px}.palette-item span{font-size:13px;font-weight:600;color:var(--text-primary);text-align:center}.ai-section{padding-top:24px;border-top:1px solid var(--border-primary)}.ai-prompt-input{width:100%;padding:12px;background:var(--bg-primary);border:1px solid var(--border-primary);border-radius:8px;color:var(--text-primary);font-size:14px;font-family:inherit;resize:vertical;margin-bottom:12px;outline:none}.ai-prompt-input:focus{border-color:var(--accent-primary)}.ai-generate-btn{width:100%;padding:10px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:600;transition:opacity .2s}.ai-generate-btn:hover:not(:disabled){opacity:.9}.ai-generate-btn:disabled{opacity:.5;cursor:not-allowed}.builder-canvas{flex:1;background:#f3f4f6;overflow:auto;padding:40px}.canvas{min-height:100%;background:#fff;border-radius:12px;padding:40px;box-shadow:0 1px 3px #0000001a}.canvas-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:400px;color:var(--text-tertiary);text-align:center}.canvas-empty svg{margin-bottom:16px;opacity:.5}.canvas-empty p{font-size:16px}.canvas-component{position:relative;margin-bottom:16px;padding:4px;border:2px solid transparent;border-radius:8px;transition:all .2s}.canvas-component:hover{border-color:#e5e7eb}.canvas-component.selected{border-color:var(--accent-primary);background:#2563eb0d}.delete-btn-overlay{position:absolute;top:-12px;right:-12px;width:28px;height:28px;background:#ef4444;color:#fff;border:2px solid white;border-radius:50%;font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);transition:transform .2s}.delete-btn-overlay:hover{transform:scale(1.1)}.style-editor{width:320px;background:var(--bg-secondary);border-left:1px solid var(--border-primary);padding:24px;overflow-y:auto;flex-shrink:0}.style-editor h3{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:24px}.editor-section{margin-bottom:20px}.editor-section label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}.editor-section input[type=text],.editor-section input[type=url]{width:100%;padding:10px 12px;background:var(--bg-primary);border:1px solid var(--border-primary);border-radius:6px;color:var(--text-primary);font-size:14px;outline:none}.editor-section input:focus{border-color:var(--accent-primary)}.color-input-group{display:flex;gap:8px}.color-input-group input[type=color]{width:50px;height:42px;border:1px solid var(--border-primary);border-radius:6px;cursor:pointer;padding:2px;background:var(--bg-primary)}.color-input-group input[type=text]{flex:1}.delete-component-btn{width:100%;padding:12px;background:#ef44441a;color:#ef4444;border:1px solid #ef4444;border-radius:8px;font-size:14px;font-weight:600;margin-top:24px;transition:all .2s}.delete-component-btn:hover{background:#ef4444;color:#fff}.export-modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.export-modal{background:var(--bg-secondary);border-radius:16px;padding:32px;max-width:500px;width:90%;box-shadow:var(--shadow-xl);animation:slideUp .3s}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.export-modal h3{font-size:24px;font-weight:700;color:var(--text-primary);margin-bottom:12px}.export-modal p{color:var(--text-secondary);margin-bottom:24px;line-height:1.6}.export-actions{display:flex;gap:12px}.download-btn{flex:1;padding:12px 24px;background:var(--accent-primary);color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:600;transition:opacity .2s}.download-btn:hover{opacity:.9}.cancel-btn{flex:1;padding:12px 24px;background:transparent;color:var(--text-primary);border:1px solid var(--border-primary);border-radius:8px;font-size:14px;font-weight:600;transition:all .2s}.cancel-btn:hover{background:var(--bg-hover)}@media(max-width:1200px){.component-palette{width:240px}.style-editor{width:280px}}@media(max-width:968px){.builder-main{flex-direction:column}.component-palette,.style-editor{width:100%;max-height:300px;border-right:none;border-left:none;border-bottom:1px solid var(--border-primary)}.palette-grid{grid-template-columns:repeat(4,1fr)}.builder-canvas{padding:20px}}.chat-interface{display:flex;width:100%;height:100vh;overflow:hidden}.main-content{flex:1;display:flex;flex-direction:column;min-width:0}.chat-header{height:64px;border-bottom:1px solid var(--border-primary);display:flex;align-items:center;justify-content:space-between;padding:0 24px;background:var(--bg-primary);gap:16px}.menu-btn{display:none;padding:8px;color:var(--text-primary);border-radius:8px}.menu-btn:hover{background:var(--bg-hover)}.header-title{flex:1;display:flex;align-items:center;gap:12px;font-size:20px;font-weight:700}.header-logo-section{display:flex;align-items:center;gap:10px}.model-badge{font-size:11px;font-weight:600;padding:4px 10px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:#fff;border-radius:20px;letter-spacing:.3px;box-shadow:0 2px 8px #ff66004d}.header-badges{display:flex;align-items:center;gap:8px}.beta-badge{font-size:12px;font-weight:500;padding:4px 10px;background:var(--bg-tertiary);color:var(--text-secondary);border-radius:12px}.security-badge{display:flex;align-items:center;gap:5px;font-size:11px;font-weight:600;padding:4px 10px;background:#22c55e1a;color:#22c55e;border:1px solid rgba(34,197,94,.2);border-radius:12px;cursor:help;transition:all .2s}.security-badge:hover{background:#22c55e26;border-color:#22c55e4d}.security-badge svg{flex-shrink:0}.header-actions{display:flex;align-items:center;gap:8px}.quiz-btn,.developer-btn,.builder-btn,.settings-btn{padding:10px;color:var(--text-primary);border-radius:8px;transition:background .2s;display:flex;align-items:center;justify-content:center}.quiz-btn:hover,.developer-btn:hover,.builder-btn:hover,.settings-btn:hover{background:var(--bg-hover)}.error-banner{background:#f44;color:#fff;padding:12px 24px;display:flex;align-items:center;justify-content:space-between;font-size:14px;animation:slideDown .3s ease}@keyframes slideDown{0%{transform:translateY(-100%)}to{transform:translateY(0)}}.error-banner button{color:#fff;font-size:24px;padding:0 8px;line-height:1}@media(max-width:768px){.menu-btn{display:flex}.chat-header{padding:0 16px}.header-title{font-size:18px;flex-direction:column;align-items:flex-start;gap:6px}.header-badges{gap:6px}.beta-badge{display:none}.security-badge{font-size:10px;padding:3px 8px}.security-badge svg{width:10px;height:10px}}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:var(--bg-primary)}.auth-card{width:100%;max-width:420px;padding:48px 40px;background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:16px;box-shadow:var(--shadow-lg)}.auth-header{text-align:center;margin-bottom:32px}.auth-header h1{font-size:36px;margin-bottom:8px}.auth-subtitle{color:var(--text-secondary);font-size:14px}.auth-form{display:flex;flex-direction:column;gap:20px}.auth-error{padding:12px 16px;background:#ff44441a;color:#f44;border:1px solid rgba(255,68,68,.2);border-radius:8px;font-size:14px}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-size:14px;font-weight:500;color:var(--text-primary)}.form-group input{padding:12px 16px;border-radius:8px;font-size:15px}.form-group input::placeholder{color:var(--text-tertiary)}.auth-submit{margin-top:8px;padding:14px 24px;background:var(--accent-primary);color:var(--text-on-accent);border-radius:8px;font-weight:600;font-size:15px;transition:opacity .2s,transform .1s}.auth-submit:hover:not(:disabled){opacity:.9}.auth-submit:active:not(:disabled){transform:scale(.98)}.auth-submit:disabled{opacity:.6;cursor:not-allowed}.auth-footer{margin-top:24px;text-align:center}.auth-toggle{color:var(--accent-primary);font-size:14px;padding:8px}.auth-toggle:hover:not(:disabled){opacity:.8}.auth-toggle:disabled{opacity:.5;cursor:not-allowed}.security-notice{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:24px;padding:12px 16px;background:#22c55e1a;border:1px solid rgba(34,197,94,.2);border-radius:8px;color:#22c55e;font-size:13px;font-weight:500}.security-notice svg{flex-shrink:0}@media(max-width:480px){.auth-card{padding:32px 24px}.auth-header h1{font-size:28px}.security-notice{font-size:12px;padding:10px 14px}}.homepage{min-height:100vh;background:linear-gradient(135deg,#0a0a0a,#1a1a2e);color:#fff;overflow-x:hidden}.homepage-header{position:fixed;top:0;left:0;right:0;z-index:100;background:#0a0a0acc;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.1)}.header-content{max-width:1200px;margin:0 auto;padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center}.logo-text{display:flex;align-items:center;gap:.5rem;font-size:1.5rem;font-weight:700}.logo-gradient{background:linear-gradient(135deg,#f93,#138808,navy);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.flag{font-size:1.5rem}.cta-button-small{padding:.625rem 1.25rem;background:linear-gradient(135deg,#f93,#138808);border:none;border-radius:8px;color:#fff;font-weight:600;cursor:pointer;transition:all .3s ease;font-size:.9rem}.cta-button-small:hover{transform:translateY(-2px);box-shadow:0 8px 20px #ff99334d}.hero-section{padding:8rem 2rem 4rem;max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center;min-height:90vh}.hero-content{animation:fadeInUp .8s ease-out}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.hero-title{font-size:3.5rem;font-weight:800;line-height:1.2;margin-bottom:1.5rem;letter-spacing:-.02em}.gradient-text{background:linear-gradient(135deg,#f93,#138808,navy);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-subtitle{font-size:1.25rem;line-height:1.6;color:#fffc;margin-bottom:2rem;max-width:540px}.hero-actions{display:flex;gap:1rem;flex-wrap:wrap}.cta-button-large{padding:1rem 2rem;background:linear-gradient(135deg,#f93,#138808);border:none;border-radius:12px;color:#fff;font-weight:600;cursor:pointer;font-size:1.1rem;display:flex;align-items:center;gap:.5rem;transition:all .3s ease}.cta-button-large:hover{transform:translateY(-3px);box-shadow:0 12px 30px #f936}.hero-visual{position:relative;height:500px;animation:fadeInRight 1s ease-out}@keyframes fadeInRight{0%{opacity:0;transform:translate(50px)}to{opacity:1;transform:translate(0)}}.floating-card{position:absolute;background:#ffffff0d;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:1.5rem;display:flex;align-items:center;gap:1rem;animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-20px)}}.card-1{top:50px;left:50px;animation-delay:0s}.card-2{top:200px;right:50px;animation-delay:.5s}.card-3{bottom:100px;left:100px;animation-delay:1s}.card-icon{font-size:2rem}.card-text{font-weight:600;font-size:1rem}.features-section{padding:6rem 2rem;max-width:1200px;margin:0 auto}.section-title{font-size:2.5rem;font-weight:700;text-align:center;margin-bottom:3rem}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}.feature-card{background:#ffffff08;border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:2rem;transition:all .3s ease}.feature-card:hover{background:#ffffff0d;transform:translateY(-5px);border-color:#ff99334d}.feature-icon{font-size:3rem;margin-bottom:1rem;display:block}.feature-title{font-size:1.5rem;font-weight:600;margin-bottom:1rem}.feature-description{color:#ffffffb3;line-height:1.6;font-size:1rem}.capabilities-section{padding:6rem 2rem;max-width:1200px;margin:0 auto;background:#ffffff05;border-radius:24px}.capabilities-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem}.capability-item{background:#ffffff08;border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:1.5rem;display:flex;align-items:center;gap:1rem;transition:all .3s ease}.capability-item:hover{background:#ffffff0d;transform:scale(1.05);border-color:#ff99334d}.capability-icon{font-size:2rem}.capability-text{font-weight:500;font-size:1rem}.cta-section{padding:6rem 2rem;max-width:800px;margin:0 auto;text-align:center}.cta-content{background:linear-gradient(135deg,#ff99331a,#1388081a);border:1px solid rgba(255,153,51,.2);border-radius:24px;padding:4rem 2rem}.cta-title{font-size:2.5rem;font-weight:700;margin-bottom:1rem}.cta-subtitle{font-size:1.25rem;color:#fffc;margin-bottom:2rem}.homepage-footer{background:#0000004d;border-top:1px solid rgba(255,255,255,.1);padding:3rem 2rem 1.5rem}.footer-content{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:4rem;margin-bottom:2rem}.footer-brand p{color:#fff9;margin-top:.5rem}.footer-links{display:flex;gap:4rem}.footer-column h4{margin-bottom:1rem;font-size:1rem;font-weight:600}.footer-column a{display:block;color:#fff9;text-decoration:none;margin-bottom:.5rem;transition:color .3s ease}.footer-column a:hover{color:#f93}.footer-bottom{max-width:1200px;margin:0 auto;padding-top:2rem;border-top:1px solid rgba(255,255,255,.1);text-align:center;color:#ffffff80}@media(max-width:968px){.hero-section{grid-template-columns:1fr;padding-top:6rem}.hero-visual{height:400px}.hero-title{font-size:2.5rem}.features-grid{grid-template-columns:1fr}.footer-content{grid-template-columns:1fr;gap:2rem}.header-content{padding:1rem}.logo-text{font-size:1.25rem}}@media(max-width:640px){.hero-title{font-size:2rem}.hero-subtitle{font-size:1rem}.cta-title,.section-title{font-size:1.75rem}.floating-card{padding:1rem}.card-text{font-size:.875rem}}
