diff --git a/css/style.css b/css/style.css
index aecc7a8..9a16e4a 100644
--- a/css/style.css
+++ b/css/style.css
@@ -413,7 +413,6 @@ footer {
   padding: 1.8rem;
   font-size: 0.9rem;
   box-shadow: 0 -4px 20px rgba(255,20,147,0.3);
-  margin-left: 240px;
 }
 
 @media (max-width: 900px) {
@@ -1615,3 +1614,178 @@ footer {
   background: linear-gradient(135deg, var(--pink-500), #1a1a3e);
 }
 
+/* Search */
+.sidebar-search {
+  position: relative;
+  margin-top: 0.5rem;
+  margin-bottom: 0.25rem;
+}
+
+.sidebar-search-input {
+  width: 100%;
+  padding: 0.55rem 0.8rem;
+  border: 2px solid rgba(255,255,255,0.15);
+  border-radius: 10px;
+  font-size: 0.85rem;
+  color: var(--white);
+  background: rgba(0,0,0,0.2);
+  font-family: inherit;
+  outline: none;
+  transition: border-color 0.2s, background 0.2s;
+  box-sizing: border-box;
+}
+
+.sidebar-search-input::placeholder {
+  color: rgba(255,255,255,0.4);
+}
+
+.sidebar-search-input:focus {
+  border-color: var(--pink-400);
+  background: rgba(0,0,0,0.3);
+}
+
+.search-results-dropdown {
+  position: fixed;
+  background: var(--white);
+  border-radius: 12px;
+  box-shadow: 0 10px 40px rgba(0,0,0,0.2), 0 4px 10px rgba(255,20,147,0.15);
+  border: 2px solid var(--pink-200);
+  z-index: 9999;
+  display: none;
+  max-height: 400px;
+  overflow-y: auto;
+  margin-top: 0.3rem;
+}
+
+.search-result-item {
+  padding: 0.75rem 0.9rem;
+  cursor: pointer;
+  border-bottom: 1px solid var(--pink-100);
+  transition: background 0.15s;
+}
+
+.search-result-item:last-child {
+  border-bottom: none;
+}
+
+.search-result-item:hover,
+.search-result-item.active {
+  background: var(--pink-50);
+}
+
+.search-result-title {
+  display: flex;
+  align-items: center;
+  gap: 0.4rem;
+  margin-bottom: 0.2rem;
+  flex-wrap: wrap;
+}
+
+.search-result-page {
+  font-size: 0.72rem;
+  font-weight: 700;
+  color: var(--pink-500);
+  text-transform: uppercase;
+  letter-spacing: 0.3px;
+}
+
+.search-result-category {
+  font-size: 0.68rem;
+  font-weight: 600;
+  color: var(--pink-400);
+  background: var(--pink-100);
+  padding: 0.1rem 0.45rem;
+  border-radius: 999px;
+}
+
+.search-result-heading {
+  font-size: 0.92rem;
+  font-weight: 700;
+  color: var(--pink-700);
+  margin-bottom: 0.15rem;
+}
+
+.search-result-snippet {
+  font-size: 0.82rem;
+  color: var(--pink-800);
+  line-height: 1.4;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  display: -webkit-box;
+  -webkit-line-clamp: 2;
+  -webkit-box-orient: vertical;
+}
+
+.search-no-results {
+  padding: 1rem 0.9rem;
+  font-size: 0.88rem;
+  color: var(--pink-400);
+  text-align: center;
+  font-style: italic;
+}
+
+.search-highlight {
+  background: var(--pink-200);
+  color: var(--pink-900);
+  font-weight: 700;
+  border-radius: 2px;
+  padding: 0 0.1rem;
+}
+
+/* Dark mode search styles */
+[data-theme="dark"] .sidebar-search-input {
+  border-color: rgba(255,255,255,0.1);
+  color: var(--text-primary);
+  background: rgba(255,255,255,0.05);
+}
+
+[data-theme="dark"] .sidebar-search-input::placeholder {
+  color: var(--text-secondary);
+}
+
+[data-theme="dark"] .sidebar-search-input:focus {
+  border-color: var(--border-accent);
+  background: rgba(255,255,255,0.08);
+}
+
+[data-theme="dark"] .search-results-dropdown {
+  background: var(--bg-card);
+  border-color: var(--border-primary);
+  box-shadow: 0 10px 40px rgba(0,0,0,0.4);
+}
+
+[data-theme="dark"] .search-result-item {
+  border-bottom-color: var(--border-primary);
+}
+
+[data-theme="dark"] .search-result-item:hover,
+[data-theme="dark"] .search-result-item.active {
+  background: var(--bg-secondary);
+}
+
+[data-theme="dark"] .search-result-page {
+  color: var(--text-heading-strong);
+}
+
+[data-theme="dark"] .search-result-category {
+  color: var(--text-heading);
+  background: rgba(255,20,147,0.1);
+}
+
+[data-theme="dark"] .search-result-heading {
+  color: var(--text-heading);
+}
+
+[data-theme="dark"] .search-result-snippet {
+  color: var(--text-secondary);
+}
+
+[data-theme="dark"] .search-no-results {
+  color: var(--text-secondary);
+}
+
+[data-theme="dark"] .search-highlight {
+  background: rgba(255,20,147,0.2);
+  color: var(--text-heading);
+}
+
diff --git a/index.html b/index.html
index 1153116..fcd38e1 100644
--- a/index.html
+++ b/index.html
@@ -157,9 +157,13 @@
   </a>
 </div>
 
+<div class="search-results-dropdown" id="searchResultsContainer"></div>
+
 <footer>AI Cheat Sheet &mdash; A learning reference for artificial intelligence</footer>
 
 <script src="lib/llm.js"></script>
+<script src="lib/search.js"></script>
+<script>Search.init();</script>
 <script>
 (function(){
   function askQuestion() {
diff --git a/lib/llm.js b/lib/llm.js
index cceba66..ac2ff01 100644
--- a/lib/llm.js
+++ b/lib/llm.js
@@ -1,4 +1,3 @@
-// Shared LLM module - provides streaming chat to any page
 var LLM = (function() {
   var defaultApiUrl = 'https://llama-instruct.reeselink.com/v1';
   var defaultModel = 'instruct';
diff --git a/lib/marked.min.js b/lib/marked.min.js
new file mode 100644
index 0000000..b4e0d73
--- /dev/null
+++ b/lib/marked.min.js
@@ -0,0 +1,69 @@
+/**
+ * marked v15.0.12 - a markdown parser
+ * Copyright (c) 2011-2025, Christopher Jeffrey. (MIT Licensed)
+ * https://github.com/markedjs/marked
+ */
+
+/**
+ * DO NOT EDIT THIS FILE
+ * The code in this file is generated from files in ./src/
+ */
+(function(g,f){if(typeof exports=="object"&&typeof module<"u"){module.exports=f()}else if("function"==typeof define && define.amd){define("marked",f)}else {g["marked"]=f()}}(typeof globalThis < "u" ? globalThis : typeof self < "u" ? self : this,function(){var exports={};var __exports=exports;var module={exports};
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+`+s.text,this.inlineQueue.pop(),this.inlineQueue.at(-1).src=r.text):t.push(s),n=i.length!==e.length,e=e.substring(s.raw.length);continue}if(s=this.tokenizer.text(e)){e=e.substring(s.raw.length);let r=t.at(-1);r?.type==="text"?(r.raw+=`
+`+s.raw,r.text+=`
+`+s.text,this.inlineQueue.pop(),this.inlineQueue.at(-1).src=r.text):t.push(s);continue}if(e){let r="Infinite loop on byte: "+e.charCodeAt(0);if(this.options.silent){console.error(r);break}else throw new Error(r)}}return this.state.top=!0,t}inline(e,t=[]){return this.inlineQueue.push({src:e,tokens:t}),t}inlineTokens(e,t=[]){let n=e,s=null;if(this.tokens.links){let o=Object.keys(this.tokens.links);if(o.length>0)for(;(s=this.tokenizer.rules.inline.reflinkSearch.exec(n))!=null;)o.includes(s[0].slice(s[0].lastIndexOf("[")+1,-1))&&(n=n.slice(0,s.index)+"["+"a".repeat(s[0].length-2)+"]"+n.slice(this.tokenizer.rules.inline.reflinkSearch.lastIndex))}for(;(s=this.tokenizer.rules.inline.anyPunctuation.exec(n))!=null;)n=n.slice(0,s.index)+"++"+n.slice(this.tokenizer.rules.inline.anyPunctuation.lastIndex);for(;(s=this.tokenizer.rules.inline.blockSkip.exec(n))!=null;)n=n.slice(0,s.index)+"["+"a".repeat(s[0].length-2)+"]"+n.slice(this.tokenizer.rules.inline.blockSkip.lastIndex);let i=!1,r="";for(;e;){i||(r=""),i=!1;let o;if(this.options.extensions?.inline?.some(c=>(o=c.call({lexer:this},e,t))?(e=e.substring(o.raw.length),t.push(o),!0):!1))continue;if(o=this.tokenizer.escape(e)){e=e.substring(o.raw.length),t.push(o);continue}if(o=this.tokenizer.tag(e)){e=e.substring(o.raw.length),t.push(o);continue}if(o=this.tokenizer.link(e)){e=e.substring(o.raw.length),t.push(o);continue}if(o=this.tokenizer.reflink(e,this.tokens.links)){e=e.substring(o.raw.length);let c=t.at(-1);o.type==="text"&&c?.type==="text"?(c.raw+=o.raw,c.text+=o.text):t.push(o);continue}if(o=this.tokenizer.emStrong(e,n,r)){e=e.substring(o.raw.length),t.push(o);continue}if(o=this.tokenizer.codespan(e)){e=e.substring(o.raw.length),t.push(o);continue}if(o=this.tokenizer.br(e)){e=e.substring(o.raw.length),t.push(o);continue}if(o=this.tokenizer.del(e)){e=e.substring(o.raw.length),t.push(o);continue}if(o=this.tokenizer.autolink(e)){e=e.substring(o.raw.length),t.push(o);continue}if(!this.state.inLink&&(o=this.tokenizer.url(e))){e=e.substring(o.raw.length),t.push(o);continue}let a=e;if(this.options.extensions?.startInline){let c=1/0,p=e.slice(1),u;this.options.extensions.startInline.forEach(d=>{u=d.call({lexer:this},p),typeof u=="number"&&u>=0&&(c=Math.min(c,u))}),c<1/0&&c>=0&&(a=e.substring(0,c+1))}if(o=this.tokenizer.inlineText(a)){e=e.substring(o.raw.length),o.raw.slice(-1)!=="_"&&(r=o.raw.slice(-1)),i=!0;let c=t.at(-1);c?.type==="text"?(c.raw+=o.raw,c.text+=o.text):t.push(o);continue}if(e){let c="Infinite loop on byte: "+e.charCodeAt(0);if(this.options.silent){console.error(c);break}else throw new Error(c)}}return t}};var $=class{options;parser;constructor(e){this.options=e||w}space(e){return""}code({text:e,lang:t,escaped:n}){let s=(t||"").match(m.notSpaceStart)?.[0],i=e.replace(m.endingNewline,"")+`
+`;return s?'<pre><code class="language-'+R(s)+'">'+(n?i:R(i,!0))+`</code></pre>
+`:"<pre><code>"+(n?i:R(i,!0))+`</code></pre>
+`}blockquote({tokens:e}){return`<blockquote>
+${this.parser.parse(e)}</blockquote>
+`}html({text:e}){return e}heading({tokens:e,depth:t}){return`<h${t}>${this.parser.parseInline(e)}</h${t}>
+`}hr(e){return`<hr>
+`}list(e){let t=e.ordered,n=e.start,s="";for(let o=0;o<e.items.length;o++){let a=e.items[o];s+=this.listitem(a)}let i=t?"ol":"ul",r=t&&n!==1?' start="'+n+'"':"";return"<"+i+r+`>
+`+s+"</"+i+`>
+`}listitem(e){let t="";if(e.task){let n=this.checkbox({checked:!!e.checked});e.loose?e.tokens[0]?.type==="paragraph"?(e.tokens[0].text=n+" "+e.tokens[0].text,e.tokens[0].tokens&&e.tokens[0].tokens.length>0&&e.tokens[0].tokens[0].type==="text"&&(e.tokens[0].tokens[0].text=n+" "+R(e.tokens[0].tokens[0].text),e.tokens[0].tokens[0].escaped=!0)):e.tokens.unshift({type:"text",raw:n+" ",text:n+" ",escaped:!0}):t+=n+" "}return t+=this.parser.parse(e.tokens,!!e.loose),`<li>${t}</li>
+`}checkbox({checked:e}){return"<input "+(e?'checked="" ':"")+'disabled="" type="checkbox">'}paragraph({tokens:e}){return`<p>${this.parser.parseInline(e)}</p>
+`}table(e){let t="",n="";for(let i=0;i<e.header.length;i++)n+=this.tablecell(e.header[i]);t+=this.tablerow({text:n});let s="";for(let i=0;i<e.rows.length;i++){let r=e.rows[i];n="";for(let o=0;o<r.length;o++)n+=this.tablecell(r[o]);s+=this.tablerow({text:n})}return s&&(s=`<tbody>${s}</tbody>`),`<table>
+<thead>
+`+t+`</thead>
+`+s+`</table>
+`}tablerow({text:e}){return`<tr>
+${e}</tr>
+`}tablecell(e){let t=this.parser.parseInline(e.tokens),n=e.header?"th":"td";return(e.align?`<${n} align="${e.align}">`:`<${n}>`)+t+`</${n}>
+`}strong({tokens:e}){return`<strong>${this.parser.parseInline(e)}</strong>`}em({tokens:e}){return`<em>${this.parser.parseInline(e)}</em>`}codespan({text:e}){return`<code>${R(e,!0)}</code>`}br(e){return"<br>"}del({tokens:e}){return`<del>${this.parser.parseInline(e)}</del>`}link({href:e,title:t,tokens:n}){let s=this.parser.parseInline(n),i=V(e);if(i===null)return s;e=i;let r='<a href="'+e+'"';return t&&(r+=' title="'+R(t)+'"'),r+=">"+s+"</a>",r}image({href:e,title:t,text:n,tokens:s}){s&&(n=this.parser.parseInline(s,this.parser.textRenderer));let i=V(e);if(i===null)return R(n);e=i;let r=`<img src="${e}" alt="${n}"`;return t&&(r+=` title="${R(t)}"`),r+=">",r}text(e){return"tokens"in e&&e.tokens?this.parser.parseInline(e.tokens):"escaped"in e&&e.escaped?e.text:R(e.text)}};var _=class{strong({text:e}){return e}em({text:e}){return e}codespan({text:e}){return e}del({text:e}){return e}html({text:e}){return e}text({text:e}){return e}link({text:e}){return""+e}image({text:e}){return""+e}br(){return""}};var b=class l{options;renderer;textRenderer;constructor(e){this.options=e||w,this.options.renderer=this.options.renderer||new $,this.renderer=this.options.renderer,this.renderer.options=this.options,this.renderer.parser=this,this.textRenderer=new _}static parse(e,t){return new l(t).parse(e)}static parseInline(e,t){return new l(t).parseInline(e)}parse(e,t=!0){let n="";for(let s=0;s<e.length;s++){let i=e[s];if(this.options.extensions?.renderers?.[i.type]){let o=i,a=this.options.extensions.renderers[o.type].call({parser:this},o);if(a!==!1||!["space","hr","heading","code","table","blockquote","list","html","paragraph","text"].includes(o.type)){n+=a||"";continue}}let r=i;switch(r.type){case"space":{n+=this.renderer.space(r);continue}case"hr":{n+=this.renderer.hr(r);continue}case"heading":{n+=this.renderer.heading(r);continue}case"code":{n+=this.renderer.code(r);continue}case"table":{n+=this.renderer.table(r);continue}case"blockquote":{n+=this.renderer.blockquote(r);continue}case"list":{n+=this.renderer.list(r);continue}case"html":{n+=this.renderer.html(r);continue}case"paragraph":{n+=this.renderer.paragraph(r);continue}case"text":{let o=r,a=this.renderer.text(o);for(;s+1<e.length&&e[s+1].type==="text";)o=e[++s],a+=`
+`+this.renderer.text(o);t?n+=this.renderer.paragraph({type:"paragraph",raw:a,text:a,tokens:[{type:"text",raw:a,text:a,escaped:!0}]}):n+=a;continue}default:{let o='Token with "'+r.type+'" type was not found.';if(this.options.silent)return console.error(o),"";throw new Error(o)}}}return n}parseInline(e,t=this.renderer){let n="";for(let s=0;s<e.length;s++){let i=e[s];if(this.options.extensions?.renderers?.[i.type]){let o=this.options.extensions.renderers[i.type].call({parser:this},i);if(o!==!1||!["escape","html","link","image","strong","em","codespan","br","del","text"].includes(i.type)){n+=o||"";continue}}let r=i;switch(r.type){case"escape":{n+=t.text(r);break}case"html":{n+=t.html(r);break}case"link":{n+=t.link(r);break}case"image":{n+=t.image(r);break}case"strong":{n+=t.strong(r);break}case"em":{n+=t.em(r);break}case"codespan":{n+=t.codespan(r);break}case"br":{n+=t.br(r);break}case"del":{n+=t.del(r);break}case"text":{n+=t.text(r);break}default:{let o='Token with "'+r.type+'" type was not found.';if(this.options.silent)return console.error(o),"";throw new Error(o)}}}return n}};var L=class{options;block;constructor(e){this.options=e||w}static passThroughHooks=new Set(["preprocess","postprocess","processAllTokens"]);preprocess(e){return e}postprocess(e){return e}processAllTokens(e){return e}provideLexer(){return this.block?x.lex:x.lexInline}provideParser(){return this.block?b.parse:b.parseInline}};var E=class{defaults=z();options=this.setOptions;parse=this.parseMarkdown(!0);parseInline=this.parseMarkdown(!1);Parser=b;Renderer=$;TextRenderer=_;Lexer=x;Tokenizer=S;Hooks=L;constructor(...e){this.use(...e)}walkTokens(e,t){let n=[];for(let s of e)switch(n=n.concat(t.call(this,s)),s.type){case"table":{let i=s;for(let r of i.header)n=n.concat(this.walkTokens(r.tokens,t));for(let r of i.rows)for(let o of r)n=n.concat(this.walkTokens(o.tokens,t));break}case"list":{let i=s;n=n.concat(this.walkTokens(i.items,t));break}default:{let i=s;this.defaults.extensions?.childTokens?.[i.type]?this.defaults.extensions.childTokens[i.type].forEach(r=>{let o=i[r].flat(1/0);n=n.concat(this.walkTokens(o,t))}):i.tokens&&(n=n.concat(this.walkTokens(i.tokens,t)))}}return n}use(...e){let t=this.defaults.extensions||{renderers:{},childTokens:{}};return e.forEach(n=>{let s={...n};if(s.async=this.defaults.async||s.async||!1,n.extensions&&(n.extensions.forEach(i=>{if(!i.name)throw new Error("extension name required");if("renderer"in i){let r=t.renderers[i.name];r?t.renderers[i.name]=function(...o){let a=i.renderer.apply(this,o);return a===!1&&(a=r.apply(this,o)),a}:t.renderers[i.name]=i.renderer}if("tokenizer"in i){if(!i.level||i.level!=="block"&&i.level!=="inline")throw new Error("extension level must be 'block' or 'inline'");let r=t[i.level];r?r.unshift(i.tokenizer):t[i.level]=[i.tokenizer],i.start&&(i.level==="block"?t.startBlock?t.startBlock.push(i.start):t.startBlock=[i.start]:i.level==="inline"&&(t.startInline?t.startInline.push(i.start):t.startInline=[i.start]))}"childTokens"in i&&i.childTokens&&(t.childTokens[i.name]=i.childTokens)}),s.extensions=t),n.renderer){let i=this.defaults.renderer||new $(this.defaults);for(let r in n.renderer){if(!(r in i))throw new Error(`renderer '${r}' does not exist`);if(["options","parser"].includes(r))continue;let o=r,a=n.renderer[o],c=i[o];i[o]=(...p)=>{let u=a.apply(i,p);return u===!1&&(u=c.apply(i,p)),u||""}}s.renderer=i}if(n.tokenizer){let i=this.defaults.tokenizer||new S(this.defaults);for(let r in n.tokenizer){if(!(r in i))throw new Error(`tokenizer '${r}' does not exist`);if(["options","rules","lexer"].includes(r))continue;let o=r,a=n.tokenizer[o],c=i[o];i[o]=(...p)=>{let u=a.apply(i,p);return u===!1&&(u=c.apply(i,p)),u}}s.tokenizer=i}if(n.hooks){let i=this.defaults.hooks||new L;for(let r in n.hooks){if(!(r in i))throw new Error(`hook '${r}' does not exist`);if(["options","block"].includes(r))continue;let o=r,a=n.hooks[o],c=i[o];L.passThroughHooks.has(r)?i[o]=p=>{if(this.defaults.async)return Promise.resolve(a.call(i,p)).then(d=>c.call(i,d));let u=a.call(i,p);return c.call(i,u)}:i[o]=(...p)=>{let u=a.apply(i,p);return u===!1&&(u=c.apply(i,p)),u}}s.hooks=i}if(n.walkTokens){let i=this.defaults.walkTokens,r=n.walkTokens;s.walkTokens=function(o){let a=[];return a.push(r.call(this,o)),i&&(a=a.concat(i.call(this,o))),a}}this.defaults={...this.defaults,...s}}),this}setOptions(e){return this.defaults={...this.defaults,...e},this}lexer(e,t){return x.lex(e,t??this.defaults)}parser(e,t){return b.parse(e,t??this.defaults)}parseMarkdown(e){return(n,s)=>{let i={...s},r={...this.defaults,...i},o=this.onError(!!r.silent,!!r.async);if(this.defaults.async===!0&&i.async===!1)return o(new Error("marked(): The async option was set to true by an extension. Remove async: false from the parse options object to return a Promise."));if(typeof n>"u"||n===null)return o(new Error("marked(): input parameter is undefined or null"));if(typeof n!="string")return o(new Error("marked(): input parameter is of type "+Object.prototype.toString.call(n)+", string expected"));r.hooks&&(r.hooks.options=r,r.hooks.block=e);let a=r.hooks?r.hooks.provideLexer():e?x.lex:x.lexInline,c=r.hooks?r.hooks.provideParser():e?b.parse:b.parseInline;if(r.async)return Promise.resolve(r.hooks?r.hooks.preprocess(n):n).then(p=>a(p,r)).then(p=>r.hooks?r.hooks.processAllTokens(p):p).then(p=>r.walkTokens?Promise.all(this.walkTokens(p,r.walkTokens)).then(()=>p):p).then(p=>c(p,r)).then(p=>r.hooks?r.hooks.postprocess(p):p).catch(o);try{r.hooks&&(n=r.hooks.preprocess(n));let p=a(n,r);r.hooks&&(p=r.hooks.processAllTokens(p)),r.walkTokens&&this.walkTokens(p,r.walkTokens);let u=c(p,r);return r.hooks&&(u=r.hooks.postprocess(u)),u}catch(p){return o(p)}}}onError(e,t){return n=>{if(n.message+=`
+Please report this to https://github.com/markedjs/marked.`,e){let s="<p>An error occurred:</p><pre>"+R(n.message+"",!0)+"</pre>";return t?Promise.resolve(s):s}if(t)return Promise.reject(n);throw n}}};var M=new E;function k(l,e){return M.parse(l,e)}k.options=k.setOptions=function(l){return M.setOptions(l),k.defaults=M.defaults,N(k.defaults),k};k.getDefaults=z;k.defaults=w;k.use=function(...l){return M.use(...l),k.defaults=M.defaults,N(k.defaults),k};k.walkTokens=function(l,e){return M.walkTokens(l,e)};k.parseInline=M.parseInline;k.Parser=b;k.parser=b.parse;k.Renderer=$;k.TextRenderer=_;k.Lexer=x;k.lexer=x.lex;k.Tokenizer=S;k.Hooks=L;k.parse=k;var it=k.options,ot=k.setOptions,lt=k.use,at=k.walkTokens,ct=k.parseInline,pt=k,ut=b.parse,ht=x.lex;
+
+if(__exports != exports)module.exports = exports;return module.exports}));
diff --git a/lib/search.js b/lib/search.js
new file mode 100644
index 0000000..5cd0e75
--- /dev/null
+++ b/lib/search.js
@@ -0,0 +1,566 @@
+var Search = (function() {
+  var dropdownVisible = false;
+  var selectedIndex = -1;
+  var results = [];
+  var debounceTimer = null;
+  var currentInput = null;
+
+  // Page title mapping
+  var PAGE_TITLES = {
+    'index.html': 'Home',
+    'terminology.html': 'Terminology',
+    'techniques.html': 'Techniques',
+    'use-cases.html': 'Use Cases',
+    'model-types.html': 'Model Types',
+    'prompts.html': 'Prompt Guide',
+    'math.html': 'Math & Concepts',
+    'chat.html': 'Chat',
+    'image-gen.html': 'Image Gen'
+  };
+
+  // Content to skip during crawling
+  var SKIP_CONTENT = [
+    'AI Cheat Sheet',
+    'Toggle dark mode',
+    'Toggle menu',
+    'Send',
+    'Ask me anything about AI',
+    'Ask a Question',
+    'Ask anything about AI',
+    'Powered by your configured LLM',
+    'Try AI right now',
+    'Full Chat',
+    'Generate',
+    'Clear',
+    'Image Generation',
+    'Enter image prompt'
+  ];
+
+  function assignAnchors() {
+    var defCards = document.querySelectorAll('.def-card');
+    defCards.forEach(function(card) {
+      var h3 = card.querySelector('h3');
+      if (h3) {
+        var id = slugify(h3.textContent.trim());
+        if (id) card.setAttribute('id', id);
+      }
+    });
+
+    var tables = document.querySelectorAll('.glossary-table tbody tr');
+    tables.forEach(function(row) {
+      var firstTd = row.querySelector('td');
+      if (firstTd) {
+        var id = slugify(firstTd.textContent.trim());
+        if (id) row.setAttribute('id', id);
+      }
+    });
+
+    var useGrid = document.querySelector('.use-grid');
+    if (useGrid) {
+      var useCards = useGrid.querySelectorAll('.use-card');
+      useCards.forEach(function(card) {
+        var h3 = card.querySelector('h3');
+        if (h3) {
+          var id = slugify(h3.textContent.trim());
+          if (id) card.setAttribute('id', id);
+        }
+      });
+    }
+
+    var promptBlocks = document.querySelectorAll('.prompt-block');
+    promptBlocks.forEach(function(block) {
+      var h3 = block.querySelector('h3');
+      if (h3) {
+        var id = slugify(h3.textContent.trim());
+        if (id) block.setAttribute('id', id);
+      }
+    });
+  }
+
+  function init() {
+    var navInner = document.querySelector('.nav-inner');
+    if (!navInner) return;
+
+    var brand = navInner.querySelector('.nav-brand');
+    if (!brand) return;
+
+    assignAnchors();
+
+    // Create search wrapper
+    var searchWrapper = document.createElement('div');
+    searchWrapper.className = 'sidebar-search';
+    searchWrapper.style.cssText = 'position:relative; margin-top:0.5rem; margin-bottom:0.25rem;';
+
+    var searchInput = document.createElement('input');
+    searchInput.type = 'text';
+    searchInput.className = 'sidebar-search-input';
+    searchInput.placeholder = 'Search...';
+    searchInput.setAttribute('aria-label', 'Search all pages');
+    searchInput.autocomplete = 'off';
+
+    searchWrapper.appendChild(searchInput);
+
+    // Insert after brand
+    brand.parentNode.insertBefore(searchWrapper, brand.nextSibling);
+
+    currentInput = searchInput;
+
+    // Event listeners
+    searchInput.addEventListener('input', function(e) {
+      clearTimeout(debounceTimer);
+      var query = e.target.value.trim();
+      if (query.length === 0) {
+        hideDropdown();
+        return;
+      }
+      debounceTimer = setTimeout(function() {
+        performSearch(query);
+      }, 150);
+    });
+
+    searchInput.addEventListener('keydown', function(e) {
+      if (!dropdownVisible || results.length === 0) return;
+
+      if (e.key === 'ArrowDown') {
+        e.preventDefault();
+        selectedIndex = Math.min(selectedIndex + 1, results.length - 1);
+        updateSelection();
+      } else if (e.key === 'ArrowUp') {
+        e.preventDefault();
+        selectedIndex = Math.max(selectedIndex - 1, 0);
+        updateSelection();
+      } else if (e.key === 'Enter') {
+        e.preventDefault();
+        if (selectedIndex >= 0 && selectedIndex < results.length) {
+          navigateToResult(results[selectedIndex]);
+        } else if (results.length > 0) {
+          navigateToResult(results[0]);
+        }
+      } else if (e.key === 'Escape') {
+        e.preventDefault();
+        hideDropdown();
+        searchInput.blur();
+      }
+    });
+
+    searchInput.addEventListener('focus', function() {
+      if (results.length > 0 && currentInput.value.trim().length > 0) {
+        showDropdown();
+      }
+    });
+
+    // Close dropdown when clicking outside
+    document.addEventListener('click', function(e) {
+      if (!searchWrapper.contains(e.target)) {
+        hideDropdown();
+      }
+    });
+
+    // Reposition on scroll and resize
+    function positionDropdown() {
+      var container = document.getElementById('searchResultsContainer');
+      if (!container || !dropdownVisible) return;
+      var rect = currentInput.getBoundingClientRect();
+      var vw = window.innerWidth;
+      container.style.top = (rect.bottom + 5) + 'px';
+      if (vw <= 900) {
+        container.style.left = '0';
+        container.style.width = '100vw';
+      } else {
+        container.style.left = rect.left + 'px';
+        container.style.width = '520px';
+      }
+    }
+
+    window.addEventListener('scroll', positionDropdown);
+    window.addEventListener('resize', positionDropdown);
+  }
+
+  function crawlPage(url, callback) {
+    fetch(url)
+      .then(function(response) { return response.text(); })
+      .then(function(html) {
+        var parser = new DOMParser();
+        var doc = parser.parseFromString(html, 'text/html');
+        var results = [];
+
+        // Get page title
+        var pageTitle = PAGE_TITLES[doc.title.replace(' - Cheat Sheet', '').replace('AI Cheat Sheet', '').trim()] || doc.title;
+
+        // Extract def-cards
+        var defCards = doc.querySelectorAll('.def-card');
+        defCards.forEach(function(card) {
+          var heading = card.querySelector('h3');
+          var p = card.querySelector('p');
+          var example = card.querySelector('.example');
+          var category = card.querySelector('.category');
+
+          if (!heading || !p) return;
+
+          var headingText = heading.textContent.trim();
+          var defText = p.textContent.trim();
+          var catText = category ? category.textContent.trim() : '';
+          var exText = example ? example.textContent.trim() : '';
+
+          var fullText = (catText + ' ' + headingText + ' ' + defText + ' ' + exText).trim();
+          if (fullText.length < 10) return;
+
+          // Skip boilerplate content
+          var skip = false;
+          for (var i = 0; i < SKIP_CONTENT.length; i++) {
+            if (fullText.indexOf(SKIP_CONTENT[i]) === 0) { skip = true; break; }
+          }
+          if (skip) return;
+
+          results.push({
+            page: pageTitle,
+            url: url,
+            heading: headingText,
+            category: catText,
+            snippet: defText,
+            fullText: fullText.toLowerCase(),
+            anchor: slugify(headingText)
+          });
+        });
+
+        // Extract table rows
+        var tables = doc.querySelectorAll('.glossary-table tbody tr');
+        tables.forEach(function(row) {
+          var tds = row.querySelectorAll('td');
+          if (tds.length < 2) return;
+
+          var acronym = tds[0].textContent.trim();
+          var meaning = tds[1].textContent.trim();
+
+          results.push({
+            page: pageTitle,
+            url: url,
+            heading: acronym,
+            category: 'Acronym',
+            snippet: meaning,
+            fullText: (acronym + ' ' + meaning).toLowerCase(),
+            anchor: slugify(acronym)
+          });
+        });
+
+        // Extract section headings for pages without def-cards (like use-cases, model-types)
+        var sections = doc.querySelectorAll('h2.section-title');
+        sections.forEach(function(h2) {
+          var sectionName = h2.textContent.trim();
+          // Check if there are cards under this section
+          var next = h2.nextElementSibling;
+          var cards = [];
+          while (next && !next.classList.contains('section-title')) {
+            if (next.classList && (next.classList.contains('card') || next.classList.contains('use-card') || next.classList.contains('prompt-block') || next.classList.contains('def-card'))) {
+              cards.push(next);
+            }
+            next = next.nextElementSibling;
+          }
+
+          cards.forEach(function(card) {
+            var h3 = card.querySelector('h3');
+            var p = card.querySelector('p');
+            if (!h3 || !p) return;
+
+            var headingText = h3.textContent.trim();
+            var cardText = p.textContent.trim();
+
+            // Skip if already captured as def-card
+            if (card.classList.contains('def-card')) return;
+
+            results.push({
+              page: pageTitle,
+              url: url,
+              heading: headingText,
+              category: sectionName,
+              snippet: cardText,
+              fullText: (sectionName + ' ' + headingText + ' ' + cardText).toLowerCase(),
+              anchor: slugify(headingText)
+            });
+          });
+        });
+
+        // For pages with .use-grid, extract use-cards
+        var useGrid = doc.querySelector('.use-grid');
+        if (useGrid) {
+          var useCards = useGrid.querySelectorAll('.use-card');
+          useCards.forEach(function(card) {
+            var h3 = card.querySelector('h3');
+            var p = card.querySelector('p');
+            if (!h3 || !p) return;
+            var headingText = h3.textContent.trim();
+            var cardText = p.textContent.trim();
+
+            results.push({
+              page: pageTitle,
+              url: url,
+              heading: headingText,
+              category: 'Use Case',
+              snippet: cardText,
+              fullText: (headingText + ' ' + cardText).toLowerCase(),
+              anchor: slugify(headingText)
+            });
+          });
+        }
+
+        // For prompt guide, extract prompt-blocks
+        var promptBlocks = doc.querySelectorAll('.prompt-block');
+        if (promptBlocks.length > 0) {
+          promptBlocks.forEach(function(block) {
+            var h3 = block.querySelector('h3');
+            var label = block.querySelector('.label');
+            var p = block.querySelector('p');
+
+            if (!h3) return;
+            var headingText = h3.textContent.trim();
+            var labelText = label ? label.textContent.trim() : '';
+            var cardText = p ? p.textContent.trim() : '';
+
+            results.push({
+              page: pageTitle,
+              url: url,
+              heading: headingText,
+              category: labelText || 'Prompt',
+              snippet: cardText,
+              fullText: (headingText + ' ' + labelText + ' ' + cardText).toLowerCase(),
+              anchor: slugify(headingText)
+            });
+          });
+        }
+
+        // For math page, extract def-cards (already handled above)
+        // For model-types, also grab comparison table
+        var modelTables = doc.querySelectorAll('.glossary-table');
+        if (modelTables.length > 0) {
+          modelTables.forEach(function(table) {
+            var rows = table.querySelectorAll('tbody tr');
+            rows.forEach(function(row) {
+              var tds = row.querySelectorAll('td');
+              if (tds.length === 0) return;
+              var rowText = '';
+              for (var i = 0; i < tds.length; i++) {
+                rowText += ' ' + tds[i].textContent.trim();
+              }
+              if (rowText.length < 5) return;
+
+              results.push({
+                page: pageTitle,
+                url: url,
+                heading: tds[0] ? tds[0].textContent.trim() : 'Table Entry',
+                category: 'Comparison',
+                snippet: rowText.trim(),
+                fullText: rowText.toLowerCase(),
+                anchor: slugify(tds[0] ? tds[0].textContent.trim() : 'Table Entry')
+              });
+            });
+          });
+        }
+
+        callback(results);
+      })
+      .catch(function() {
+        callback([]);
+      });
+  }
+
+  function crawlAllPages(callback) {
+    var pages = [
+      { url: '/index.html', title: 'Home' },
+      { url: '/pages/terminology.html', title: 'Terminology' },
+      { url: '/pages/techniques.html', title: 'Techniques' },
+      { url: '/pages/use-cases.html', title: 'Use Cases' },
+      { url: '/pages/model-types.html', title: 'Model Types' },
+      { url: '/pages/prompts.html', title: 'Prompt Guide' },
+      { url: '/pages/math.html', title: 'Math & Concepts' }
+    ];
+
+    var allResults = [];
+    var completed = 0;
+
+    if (pages.length === 0) {
+      callback(allResults);
+      return;
+    }
+
+    pages.forEach(function(page) {
+      crawlPage(page.url, function(results) {
+        allResults = allResults.concat(results);
+        completed++;
+        if (completed === pages.length) {
+          callback(allResults);
+        }
+      });
+    });
+  }
+
+  function performSearch(query) {
+    var q = query.toLowerCase().trim();
+    if (q.length === 0) { hideDropdown(); return; }
+
+    crawlAllPages(function(allResults) {
+      searchResults(allResults, q);
+    });
+  }
+
+  function searchResults(allResults, q) {
+    var qWords = q.split(/\s+/).filter(function(w) { return w.length > 0; });
+    var scored = [];
+
+    for (var i = 0; i < allResults.length; i++) {
+      var item = allResults[i];
+      var text = item.fullText || '';
+      var score = 0;
+
+      if (text.indexOf(q) !== -1) score += 100;
+
+      for (var j = 0; j < qWords.length; j++) {
+        if (text.indexOf(qWords[j]) !== -1) score += 10;
+        if (item.heading && item.heading.toLowerCase().indexOf(qWords[j]) === 0) score += 20;
+        if (item.category && item.category.toLowerCase().indexOf(qWords[j]) !== -1) score += 5;
+      }
+
+      if (score > 0) {
+        scored.push({ item: item, score: score });
+      }
+    }
+
+    scored.sort(function(a, b) { return b.score - a.score; });
+    var topResults = scored.slice(0, 10).map(function(s) { return s.item; });
+    displayResults(topResults, q);
+  }
+
+  function highlightText(text, query) {
+    if (!text || !query) return escapeHTML(text);
+    var escaped = escapeHTML(text);
+    var qWords = query.toLowerCase().split(/\s+/).filter(function(w) { return w.length > 0; });
+
+    for (var i = 0; i < qWords.length; i++) {
+      var word = qWords[i];
+      var regex = new RegExp('(' + escapeRegex(word) + ')', 'gi');
+      escaped = escaped.replace(regex, '<mark class="search-highlight">$1</mark>');
+    }
+
+    return escaped;
+  }
+
+  function escapeRegex(str) {
+    return str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
+  }
+
+  function escapeHTML(str) {
+    var div = document.createElement('div');
+    div.textContent = str;
+    return div.innerHTML;
+  }
+
+  function slugify(text) {
+    return text
+      .toLowerCase()
+      .replace(/\(.*?\)/g, function(match) { return match.replace(/[()]/g, ''); })
+      .replace(/[^a-z0-9]+/g, '-')
+      .replace(/^-+|-+$/g, '');
+  }
+
+  function displayResults(foundResults, query) {
+    results = foundResults;
+    selectedIndex = -1;
+
+    if (results.length === 0) {
+      showDropdown();
+      var container = document.getElementById('searchResultsContainer');
+      if (container) {
+        container.innerHTML = '<div class="search-no-results">No results found for "' + escapeHTML(query) + '"</div>';
+      }
+      return;
+    }
+
+    var container = document.getElementById('searchResultsContainer');
+    var html = '';
+    for (var i = 0; i < results.length; i++) {
+      var r = results[i];
+      var categoryLabel = r.category ? '<span class="search-result-category">' + escapeHTML(r.category) + '</span>' : '';
+      var highlightedSnippet = highlightText(r.snippet, query);
+
+      html += '<div class="search-result-item" data-index="' + i + '" data-url="' + escapeHTML(r.url) + '" data-anchor="' + escapeHTML(r.anchor || '') + '">';
+      html += '<div class="search-result-title">';
+      html += '<span class="search-result-page">' + escapeHTML(r.page) + '</span>';
+      html += categoryLabel;
+      html += '</div>';
+      html += '<div class="search-result-heading">' + highlightText(r.heading, query) + '</div>';
+      html += '<div class="search-result-snippet">' + highlightedSnippet + '</div>';
+      html += '</div>';
+    }
+    container.innerHTML = html;
+    showDropdown();
+
+    // Attach click handlers
+    var items = container.querySelectorAll('.search-result-item');
+    for (var j = 0; j < items.length; j++) {
+      items[j].addEventListener('click', function() {
+        var url = this.getAttribute('data-url');
+        var anchor = this.getAttribute('data-anchor');
+        navigateToResult({ url: url, anchor: anchor });
+      });
+      items[j].addEventListener('mouseenter', function() {
+        var idx = parseInt(this.getAttribute('data-index'), 10);
+        selectedIndex = idx;
+        updateSelection();
+      });
+    }
+  }
+
+  function updateSelection() {
+    var items = document.querySelectorAll('.search-result-item');
+    for (var i = 0; i < items.length; i++) {
+      if (i === selectedIndex) {
+        items[i].classList.add('active');
+        items[i].scrollIntoView({ block: 'nearest' });
+      } else {
+        items[i].classList.remove('active');
+      }
+    }
+  }
+
+  function showDropdown() {
+    var container = document.getElementById('searchResultsContainer');
+    if (container) {
+      var rect = currentInput.getBoundingClientRect();
+      var vw = window.innerWidth;
+      var sidebarWidth = 240;
+
+      if (vw <= 900) {
+        container.style.left = '0';
+        container.style.width = '100vw';
+      } else {
+        container.style.left = rect.left + 'px';
+        container.style.width = '520px';
+      }
+      container.style.top = (rect.bottom + 5) + 'px';
+      container.style.display = 'block';
+      dropdownVisible = true;
+    }
+  }
+
+  function hideDropdown() {
+    var container = document.getElementById('searchResultsContainer');
+    if (container) {
+      container.style.display = 'none';
+    }
+    dropdownVisible = false;
+    selectedIndex = -1;
+  }
+
+  function navigateToResult(result) {
+    hideDropdown();
+    if (currentInput) currentInput.blur();
+    var target = result.url;
+    if (result.anchor) {
+      target = result.url + '#' + result.anchor;
+    }
+    window.location.href = target;
+  }
+
+  return {
+    init: init
+  };
+})();
diff --git a/pages/chat.html b/pages/chat.html
index 4e677a1..6ae2434 100644
--- a/pages/chat.html
+++ b/pages/chat.html
@@ -119,6 +119,12 @@
 
 <footer>AI Cheat Sheet &mdash; A learning reference for artificial intelligence</footer>
 
+<div class="search-results-dropdown" id="searchResultsContainer"></div>
+
+<script src="../lib/search.js"></script>
+<script>Search.init();</script>
+<script src="../lib/marked.min.js"></script>
+
 <script>
 (function(){
   var chatMessages = document.getElementById('chatMessages');
@@ -129,6 +135,12 @@
     var apiTokenInput = document.getElementById('apiToken');
     var modelNameInput = document.getElementById('modelName');
 
+  // Parse markdown in initial welcome message
+  var initialBubble = chatMessages.querySelector('.message-bubble p');
+  if(initialBubble) {
+    initialBubble.innerHTML = marked.parseInline(initialBubble.textContent);
+  }
+
     // Restore saved settings
     var savedToken = localStorage.getItem('apiToken');
     if(savedToken) apiTokenInput.value = savedToken;
@@ -153,7 +165,11 @@
 
     var p = document.createElement('p');
     p.className = 'message-content';
-    p.textContent = content;
+    if(role === 'assistant') {
+      p.innerHTML = marked.parse(content);
+    } else {
+      p.textContent = content;
+    }
     bubble.appendChild(p);
 
     msgDiv.appendChild(avatar);
@@ -271,7 +287,7 @@
                 var delta = json.choices && json.choices[0] && json.choices[0].delta;
                 if(delta && delta.content) {
                   streamContent += delta.content;
-                  contentEl.textContent = streamContent;
+                  contentEl.innerHTML = marked.parse(streamContent);
                   chatMessages.scrollTop = chatMessages.scrollHeight;
                 }
               } catch(e) {
@@ -313,7 +329,7 @@
     chatMessages.innerHTML = '';
     var welcomeMsg = document.createElement('div');
     welcomeMsg.className = 'message assistant-message';
-    welcomeMsg.innerHTML = '<div class="message-avatar">AI</div><div class="message-bubble"><p>Hello! Chat cleared. How can I help you?</p></div>';
+    welcomeMsg.innerHTML = '<div class="message-avatar">AI</div><div class="message-bubble"><p>' + marked.parse('Hello! Chat cleared. How can I help you?') + '</p></div>';
     chatMessages.appendChild(welcomeMsg);
   });
 
diff --git a/pages/image-gen.html b/pages/image-gen.html
index 7e8e832..fc54e55 100644
--- a/pages/image-gen.html
+++ b/pages/image-gen.html
@@ -115,6 +115,11 @@
 
 <footer>AI Cheat Sheet &mdash; A learning reference for artificial intelligence</footer>
 
+<div class="search-results-dropdown" id="searchResultsContainer"></div>
+
+<script src="../lib/search.js"></script>
+<script>Search.init();</script>
+
 <script>
 (function(){
   var apiUrlInput = document.getElementById('apiUrl');
@@ -282,7 +287,7 @@
         prompt: prompt,
         model: model,
         n: 1,
-        size: '1024x1024'
+        size: '512x512'
       })
     })
     .then(function(response) {
diff --git a/pages/math.html b/pages/math.html
index e2b4bab..3625bb5 100644
--- a/pages/math.html
+++ b/pages/math.html
@@ -260,8 +260,12 @@
 
 <footer>AI Cheat Sheet &mdash; A learning reference for artificial intelligence</footer>
 
+<div class="search-results-dropdown" id="searchResultsContainer"></div>
+
 <script src="../lib/modal.js"></script>
 <script src="../lib/llm.js"></script>
+<script src="../lib/search.js"></script>
+<script>Search.init();</script>
 <script>
 (function(){
   function walkThrough(title, prompt) {
diff --git a/pages/model-types.html b/pages/model-types.html
index 40e342e..77f8725 100644
--- a/pages/model-types.html
+++ b/pages/model-types.html
@@ -237,8 +237,12 @@
 
 <footer>AI Cheat Sheet &mdash; A learning reference for artificial intelligence</footer>
 
+<div class="search-results-dropdown" id="searchResultsContainer"></div>
+
 <script src="../lib/modal.js"></script>
 <script src="../lib/llm.js"></script>
+<script src="../lib/search.js"></script>
+<script>Search.init();</script>
 <script>
 (function(){
   function explainModel(title, definition) {
diff --git a/pages/prompts.html b/pages/prompts.html
index c7fb9e7..69c49be 100644
--- a/pages/prompts.html
+++ b/pages/prompts.html
@@ -236,8 +236,12 @@
 
 <footer>AI Cheat Sheet &mdash; A learning reference for artificial intelligence</footer>
 
+<div class="search-results-dropdown" id="searchResultsContainer"></div>
+
 <script src="../lib/modal.js"></script>
 <script src="../lib/llm.js"></script>
+<script src="../lib/search.js"></script>
+<script>Search.init();</script>
 <script>
 (function(){
   var techniquePrompts = {
diff --git a/pages/techniques.html b/pages/techniques.html
index 08d1d41..0bf61bd 100644
--- a/pages/techniques.html
+++ b/pages/techniques.html
@@ -200,8 +200,12 @@
 
 <footer>AI Cheat Sheet &mdash; A learning reference for artificial intelligence</footer>
 
+<div class="search-results-dropdown" id="searchResultsContainer"></div>
+
 <script src="../lib/modal.js"></script>
 <script src="../lib/llm.js"></script>
+<script src="../lib/search.js"></script>
+<script>Search.init();</script>
 <script>
 (function(){
   function demoTechnique(title, prompt) {
diff --git a/pages/terminology.html b/pages/terminology.html
index a675306..8dadce0 100644
--- a/pages/terminology.html
+++ b/pages/terminology.html
@@ -237,8 +237,12 @@
 
 <footer>AI Cheat Sheet &mdash; A learning reference for artificial intelligence</footer>
 
+<div class="search-results-dropdown" id="searchResultsContainer"></div>
+
 <script src="../lib/modal.js"></script>
 <script src="../lib/llm.js"></script>
+<script src="../lib/search.js"></script>
+<script>Search.init();</script>
 <script>
 (function(){
   function explainTerm(title, definition) {
diff --git a/pages/use-cases.html b/pages/use-cases.html
index 131c853..19ab2d8 100644
--- a/pages/use-cases.html
+++ b/pages/use-cases.html
@@ -232,8 +232,12 @@
 
 <footer>AI Cheat Sheet &mdash; A learning reference for artificial intelligence</footer>
 
+<div class="search-results-dropdown" id="searchResultsContainer"></div>
+
 <script src="../lib/modal.js"></script>
 <script src="../lib/llm.js"></script>
+<script src="../lib/search.js"></script>
+<script>Search.init();</script>
 <script>
 (function(){
   function brainstormUseCase(title, prompt) {