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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>X Code — PhineX Group</title>
<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,300;0,400;0,500;0,700;1,300;1,400&family=Orbitron:wght@700;900&family=Exo+2:wght@400;600&display=swap" rel="stylesheet">
<style>
*{margin:0;padding:0;box-sizing:border-box;}
:root{
--bg:#1e1e1e;--bg2:#252526;--bg3:#2d2d30;--bg4:#333333;
--sidebar:#252526;--activity:#333333;--tab-bg:#2d2d30;--tab-active:#1e1e1e;
--border:#3c3c3c;--text:#d4d4d4;--muted:#858585;--accent:#39ff14;
--accent-dim:rgba(57,255,20,0.12);--accent-glow:rgba(57,255,20,0.35);
--sel:rgba(57,255,20,0.18);
--kw:#569cd6;--str:#ce9178;--cmt:#6a9955;--fn:#dcdcaa;--num:#b5cea8;
--type:#4ec9b0;--prop:#9cdcfe;--regex:#d16969;--interp:#e8b339;
--ghost:#6a7387;
--status-bg:#007acc;
--err:#f44747;--warn:#cca700;--info:#3794ff;
--font:'JetBrains Mono','Fira Code',monospace;
--display-font:'Orbitron','Exo 2',sans-serif;
}
html,body{height:100%;width:100%;overflow:hidden;}
body{font-family:var(--font);background:var(--bg);color:var(--text);font-size:13px;}
#app{height:100%;width:100%;display:flex;flex-direction:column;overflow:hidden;}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:#4a4a4a;border-radius:5px;border:2px solid var(--bg);}
::-webkit-scrollbar-thumb:hover{background:#5a5a5a;}
/* ── Title bar ── */
.titlebar{height:38px;flex-shrink:0;background:var(--bg4);border-bottom:1px solid #111;display:flex;align-items:center;justify-content:space-between;padding:0 10px;gap:12px;}
.tb-left{display:flex;align-items:center;gap:14px;min-width:0;}
.tb-logo{display:flex;align-items:center;gap:6px;font-family:var(--display-font);font-weight:700;color:var(--accent);font-size:13px;letter-spacing:.5px;flex-shrink:0;text-shadow:0 0 8px var(--accent-glow);}
.tb-menu{display:flex;align-items:center;gap:6px;}
.tb-btn{background:transparent;border:1px solid transparent;color:var(--text);font-size:11.5px;padding:5px 9px;border-radius:4px;}
.tb-btn:hover{background:rgba(255,255,255,.08);}
.tb-reconnect{border-color:var(--accent);color:var(--accent);}
.tb-conn{font-size:11px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:160px;}
.tb-center{font-size:11.5px;color:var(--muted);flex:1;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0;}
.tb-right{display:flex;align-items:center;gap:2px;flex-shrink:0;}
.tb-icon{width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:var(--text);border-radius:4px;}
.tb-icon:hover{background:rgba(255,255,255,.1);color:var(--accent);}
/* ── Main body layout ── */
.main-body{flex:1;display:flex;overflow:hidden;min-height:0;}
/* ── Activity bar ── */
.activitybar{width:46px;flex-shrink:0;background:var(--activity);border-right:1px solid #111;display:flex;flex-direction:column;align-items:center;padding:8px 0;gap:2px;}
.ab-btn{width:38px;height:38px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:var(--muted);border-radius:6px;position:relative;}
.ab-btn:hover{color:var(--text);}
.ab-btn.active{color:var(--accent);background:var(--accent-dim);}
.ab-badge{position:absolute;top:2px;right:2px;background:var(--err);color:#fff;font-size:9px;line-height:1;min-width:14px;height:14px;border-radius:7px;display:flex;align-items:center;justify-content:center;padding:0 3px;font-weight:700;}
.ab-spacer{flex:1;}
/* ── Sidebar ── */
.sidebar{flex-shrink:0;background:var(--sidebar);border-right:1px solid #111;display:flex;flex-direction:column;position:relative;overflow:hidden;}
.sidebar-resize-handle{position:absolute;top:0;right:-2px;width:5px;height:100%;cursor:col-resize;z-index:5;}
.sidebar-resize-handle:hover{background:var(--accent-dim);}
.sidebar-panel{flex:1;display:flex;flex-direction:column;overflow:hidden;min-height:0;}
.sidebar-head{height:34px;flex-shrink:0;display:flex;align-items:center;justify-content:space-between;padding:0 12px;font-size:10.5px;font-weight:700;letter-spacing:1.2px;color:var(--muted);text-transform:uppercase;}
.sidebar-head-acts{display:flex;gap:2px;}
.sidebar-head-acts button{width:22px;height:22px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:var(--muted);border-radius:4px;}
.sidebar-head-acts button:hover{color:var(--text);background:rgba(255,255,255,.08);}
/* ── File tree ── */
.file-tree{flex:1;overflow-y:auto;overflow-x:hidden;padding:2px 0;}
.ftree-row{display:flex;align-items:center;height:23px;gap:5px;padding-right:6px;cursor:pointer;font-size:12.5px;white-space:nowrap;position:relative;}
.ftree-row:hover{background:rgba(255,255,255,.06);}
.ftree-row:hover .ftree-hover-acts{display:flex;}
.ftree-file.active{background:var(--accent-dim);color:var(--accent);}
.ftree-folder{font-weight:500;}
.ftree-name{overflow:hidden;text-overflow:ellipsis;flex:1;}
.ftree-chevron{display:flex;color:var(--muted);flex-shrink:0;transition:transform .12s;}
.ftree-chevron.open{transform:rotate(90deg);}
.ftree-dot{width:6px;height:6px;border-radius:50%;background:var(--text);opacity:.6;flex-shrink:0;}
.ftree-err-dot{width:6px;height:6px;border-radius:50%;background:var(--err);flex-shrink:0;}
.ftree-warn-dot{width:6px;height:6px;border-radius:50%;background:var(--warn);flex-shrink:0;}
.ftree-hover-acts{display:none;gap:2px;position:absolute;right:4px;background:var(--sidebar);}
.ftree-hover-acts button{width:18px;height:18px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:var(--muted);border-radius:3px;}
.ftree-hover-acts button:hover{color:var(--accent);}
.ftree-rename-input{flex:1;background:var(--bg);border:1px solid var(--accent);color:var(--text);font-size:12.5px;font-family:inherit;padding:1px 4px;border-radius:2px;outline:none;}
.ftree-empty{padding:16px 14px;color:var(--muted);font-size:12px;line-height:1.6;}
/* ── Search panel ── */
.search-box{padding:8px 10px;flex-shrink:0;}
.search-input{width:100%;background:var(--bg);border:1px solid var(--border);color:var(--text);font-size:12.5px;padding:6px 8px;border-radius:4px;outline:none;}
.search-input:focus{border-color:var(--accent);}
.search-results{flex:1;overflow-y:auto;padding:0 4px;}
.search-result-file{margin-bottom:4px;}
.search-result-path{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text);padding:4px 6px;font-weight:600;}
.search-count{color:var(--muted);font-weight:400;margin-left:auto;}
.search-match{display:flex;gap:8px;padding:2px 6px 2px 24px;font-size:12px;color:var(--muted);cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.search-match:hover{background:rgba(255,255,255,.06);color:var(--text);}
.search-line-no{color:var(--muted);flex-shrink:0;min-width:18px;}
mark{background:var(--accent-dim);color:var(--accent);border-radius:2px;}
/* ── AI Chat panel ── */
.ai-chat-messages{flex:1;overflow-y:auto;padding:10px;display:flex;flex-direction:column;gap:12px;}
.ai-msg{display:flex;flex-direction:column;}
.ai-msg-assistant{padding:8px 10px;background:rgba(255,255,255,.03);border-radius:8px;border:1px solid var(--border);}
.ai-msg-role{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.8px;color:var(--muted);margin-bottom:3px;}
.ai-msg-user .ai-msg-role{color:var(--accent);}
.ai-msg-text{font-size:12.5px;line-height:1.55;color:var(--text);word-wrap:break-word;}
.ai-code-block{background:var(--bg);border:1px solid var(--border);border-radius:4px;padding:8px;margin:6px 0;overflow-x:auto;font-size:12px;white-space:pre;}
.ai-msg-text code{background:var(--bg);padding:1px 4px;border-radius:3px;font-size:12px;}
.ai-typing{color:var(--accent);letter-spacing:2px;}
.ai-chat-input-row{flex-shrink:0;display:flex;gap:6px;padding:8px;border-top:1px solid var(--border);}
.ai-chat-input{flex:1;background:var(--bg);border:1px solid var(--border);color:var(--text);font-size:12.5px;padding:8px;border-radius:6px;outline:none;resize:none;height:60px;font-family:inherit;}
.ai-chat-input:focus{border-color:var(--accent);}
.ai-chat-input-row button{width:32px;background:var(--accent-dim);border:none;color:var(--accent);border-radius:6px;display:flex;align-items:center;justify-content:center;}
.ai-chat-input-row button:hover{background:var(--accent);color:#000;}
/* ── Problems ── */
.prob-file-group{margin-bottom:2px;}
.prob-file-head{display:flex;align-items:center;gap:6px;padding:5px 10px;font-size:12px;font-weight:600;cursor:pointer;}
.prob-file-head:hover{background:rgba(255,255,255,.05);}
.prob-item{display:flex;align-items:center;gap:8px;padding:4px 10px 4px 26px;cursor:pointer;font-size:12px;}
.prob-item:hover{background:rgba(255,255,255,.06);}
.prob-msg{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text);}
.prob-loc{color:var(--muted);flex-shrink:0;font-size:11px;}
.bottom-problems{overflow-y:auto;height:100%;padding:4px 0;}
/* ── Tab bar ── */
.tabbar{flex-shrink:0;display:flex;background:var(--tab-bg);border-bottom:1px solid #111;overflow-x:auto;overflow-y:hidden;}
.tabbar::-webkit-scrollbar{height:3px;}
.tab{display:flex;align-items:center;gap:6px;padding:0 8px 0 12px;height:34px;font-size:12px;color:var(--muted);border-right:1px solid #111;cursor:pointer;white-space:nowrap;flex-shrink:0;position:relative;}
.tab:hover{color:var(--text);}
.tab.active{background:var(--tab-active);color:var(--text);}
.tab.active::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:var(--accent);}
.tab-name{max-width:140px;overflow:hidden;text-overflow:ellipsis;}
.tab-dot{width:7px;height:7px;border-radius:50%;background:var(--text);opacity:.7;flex-shrink:0;}
.tab-close{width:18px;height:18px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:var(--muted);border-radius:3px;flex-shrink:0;}
.tab-close:hover{background:rgba(255,255,255,.15);color:var(--text);}
/* ── Editor column / area / panes ── */
.editor-column{flex:1;display:flex;flex-direction:column;min-width:0;overflow:hidden;}
.editor-area{flex:1;display:flex;overflow:hidden;min-height:0;}
.editor-area.split-column{flex-direction:column;}
.editor-area.split-row{flex-direction:row;}
.editor-pane{display:flex;flex-direction:column;overflow:hidden;min-width:0;min-height:0;position:relative;background:var(--bg);}
.pane-divider{flex-shrink:0;background:var(--border);position:relative;z-index:4;}
.split-row .pane-divider{width:1px;cursor:col-resize;}
.split-row .pane-divider:hover{background:var(--accent);width:1px;box-shadow:0 0 0 2px var(--accent-dim);}
.split-column .pane-divider{height:1px;cursor:row-resize;}
.split-column .pane-divider:hover{background:var(--accent);box-shadow:0 0 0 2px var(--accent-dim);}
.pane-header{flex-shrink:0;height:28px;display:flex;align-items:center;gap:6px;padding:0 6px;background:var(--tab-bg);border-bottom:1px solid #111;}
.pane-file-select{flex:1;background:transparent;border:none;color:var(--text);font-size:11.5px;outline:none;}
.pane-close{width:20px;height:20px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:var(--muted);border-radius:3px;flex-shrink:0;}
.pane-close:hover{background:rgba(255,255,255,.15);color:var(--text);}
.editor-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:var(--muted);font-size:12.5px;}
.image-viewer-wrap{flex:1;display:flex;align-items:center;justify-content:center;overflow:auto;background:repeating-conic-gradient(#222 0% 25%, #262626 0% 50%) 50% / 20px 20px;}
.image-viewer{max-width:90%;max-height:90%;object-fit:contain;box-shadow:0 4px 24px rgba(0,0,0,.5);}
/* ── Editor body: gutter + scroll region ── */
.editor-body{flex:1;display:flex;overflow:hidden;min-height:0;position:relative;}
.gutter{flex-shrink:0;width:52px;background:var(--bg);overflow:hidden;position:relative;padding:16px 0 16px 0;text-align:right;color:var(--muted);user-select:none;}
.gutter-inner{position:relative;}
.gutter-line{height:21px;padding-right:12px;font-size:14px;line-height:21px;}
.gutter-err-col{position:absolute;left:0;top:0;bottom:0;width:3px;}
.gutter-err-mark{position:absolute;left:0;width:3px;}
.gutter-err-mark.sev-error{background:var(--err);}
.gutter-err-mark.sev-warning{background:var(--warn);}
.gutter-err-mark.sev-info{background:var(--info);}
.editor-scroll{flex:1;overflow:auto;position:relative;}
.editor-inner{position:relative;width:max-content;min-width:100%;min-height:100%;}
.hl-layer{white-space:pre;padding:16px;font-family:var(--font);color:var(--text);pointer-events:none;min-width:100%;min-height:100%;box-sizing:border-box;}
.ed-textarea{position:absolute;inset:0;width:100%;height:100%;background:transparent;color:transparent;caret-color:var(--accent);border:none;outline:none;resize:none;white-space:pre;padding:16px;font-family:var(--font);box-sizing:border-box;overflow:hidden;}
.ed-textarea::selection{background:var(--sel);}
.dec-layer{position:absolute;inset:0;pointer-events:none;}
.dec-squiggle{position:absolute;height:3px;background-repeat:repeat-x;background-size:6px 3px;pointer-events:auto;cursor:pointer;}
.dec-squiggle.sev-error{background-image:linear-gradient(135deg,transparent 40%,var(--err) 40%,var(--err) 60%,transparent 60%);}
.dec-squiggle.sev-warning{background-image:linear-gradient(135deg,transparent 40%,var(--warn) 40%,var(--warn) 60%,transparent 60%);}
.dec-squiggle.sev-info{background-image:linear-gradient(135deg,transparent 40%,var(--info) 40%,var(--info) 60%,transparent 60%);}
.bracket-match-layer{position:absolute;inset:0;pointer-events:none;}
.bracket-match-box{position:absolute;border:1px solid var(--muted);border-radius:2px;box-sizing:border-box;background:rgba(255,255,255,.05);}
/* ── Syntax token colors ── */
.tk-kw{color:var(--kw);}
.tk-str{color:var(--str);}
.tk-cmt{color:var(--cmt);font-style:italic;}
.tk-fn{color:var(--fn);}
.tk-num{color:var(--num);}
.tk-type{color:var(--type);}
.tk-prop{color:var(--prop);}
.tk-sel{color:#d7ba7d;}
.tk-regex{color:var(--regex);}
.tk-interp{color:var(--interp);}
.tk-plain{color:var(--text);}
.ghost-text{color:var(--ghost);opacity:.75;}
.ghost-hint{color:var(--ghost);opacity:.5;font-size:10px;font-style:italic;margin-left:4px;}
/* ── Error tooltip ── */
.err-tooltip{display:none;position:fixed;z-index:200;background:#252526;border:1px solid var(--border);border-radius:6px;padding:8px 10px;font-size:12px;max-width:340px;box-shadow:0 4px 16px rgba(0,0,0,.5);line-height:1.5;}
.err-tooltip-head{font-weight:700;font-size:10.5px;letter-spacing:.5px;margin-bottom:3px;text-transform:uppercase;}
.err-tooltip.sev-error .err-tooltip-head{color:var(--err);}
.err-tooltip.sev-warning .err-tooltip-head{color:var(--warn);}
.err-tooltip.sev-info .err-tooltip-head{color:var(--info);}
/* ── Find & Replace widget ── */
.find-widget{position:absolute;top:8px;right:24px;z-index:20;background:#252526;border:1px solid var(--border);border-radius:6px;box-shadow:0 4px 16px rgba(0,0,0,.5);padding:6px;display:flex;flex-direction:column;gap:4px;}
.find-row{display:flex;align-items:center;gap:4px;}
.find-input{width:180px;background:var(--bg);border:1px solid var(--border);color:var(--text);font-size:12px;padding:5px 7px;border-radius:4px;outline:none;}
.find-input:focus{border-color:var(--accent);}
.find-count{font-size:11px;color:var(--muted);min-width:64px;text-align:center;}
.find-row button{width:24px;height:24px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:var(--muted);border-radius:4px;font-size:11px;font-weight:600;}
.find-row button:hover{background:rgba(255,255,255,.08);color:var(--text);}
.find-row button.active{color:var(--accent);background:var(--accent-dim);}
/* ── Quick fix panel ── */
.quick-fix-panel{flex-shrink:0;background:#252526;border-top:1px solid var(--border);padding:10px 14px;font-size:12.5px;}
.quick-fix-head{display:flex;align-items:center;gap:8px;font-weight:600;margin-bottom:6px;}
.quick-fix-head button{margin-left:auto;background:transparent;border:none;color:var(--muted);width:20px;height:20px;border-radius:3px;}
.quick-fix-head button:hover{color:var(--text);background:rgba(255,255,255,.1);}
.quick-fix-loading{color:var(--muted);font-style:italic;}
.quick-fix-explanation{color:var(--muted);margin-bottom:6px;}
.quick-fix-code{background:var(--bg);border:1px solid var(--border);border-radius:4px;padding:8px;font-size:12px;overflow-x:auto;margin-bottom:8px;}
.quick-fix-actions{display:flex;gap:8px;}
.btn-primary{background:var(--accent);color:#000;border:none;font-weight:700;padding:6px 14px;border-radius:4px;font-size:12px;}
.btn-primary:hover{filter:brightness(1.1);}
.quick-fix-actions button:not(.btn-primary){background:transparent;border:1px solid var(--border);color:var(--text);padding:6px 14px;border-radius:4px;font-size:12px;}
/* ── Bottom panel ── */
.bottom-collapsed{flex-shrink:0;border-top:1px solid var(--border);}
.bottom-collapsed button{width:100%;background:transparent;border:none;color:var(--muted);font-size:11.5px;padding:6px;display:flex;align-items:center;justify-content:center;gap:6px;}
.bottom-collapsed button:hover{color:var(--text);}
.bottom-panel{flex-shrink:0;display:flex;flex-direction:column;border-top:1px solid var(--border);background:var(--bg2);position:relative;min-height:100px;}
.bottom-resize-handle{position:absolute;top:-3px;left:0;right:0;height:6px;cursor:row-resize;z-index:5;}
.bottom-resize-handle:hover{background:var(--accent-dim);}
.bottom-tabs{flex-shrink:0;display:flex;align-items:center;height:30px;padding:0 8px;gap:2px;border-bottom:1px solid var(--border);}
.bottom-tab{background:transparent;border:none;color:var(--muted);font-size:11.5px;padding:5px 10px;border-radius:4px;}
.bottom-tab:hover{color:var(--text);}
.bottom-tab.active{color:var(--accent);background:var(--accent-dim);}
.bottom-tabs-spacer{flex:1;}
.bottom-icon{width:24px;height:24px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:var(--muted);border-radius:4px;}
.bottom-icon:hover{color:var(--text);background:rgba(255,255,255,.08);}
.bottom-content{flex:1;overflow:hidden;min-height:0;}
/* ── Terminal ── */
.terminal-panel{height:100%;display:flex;flex-direction:column;font-size:12.5px;}
.terminal-body{flex:1;overflow-y:auto;padding:8px 12px;}
.term-line{white-space:pre-wrap;word-break:break-word;line-height:1.6;color:var(--text);}
.term-line.term-cmd{color:var(--accent);}
.term-line.term-err{color:var(--err);}
.term-line.term-warn{color:var(--warn);}
.terminal-input-row{flex-shrink:0;display:flex;align-items:center;gap:8px;padding:6px 12px 10px;}
.terminal-prompt{color:var(--accent);font-weight:700;flex-shrink:0;}
.terminal-input{flex:1;background:transparent;border:none;color:var(--text);outline:none;font-family:inherit;font-size:12.5px;}
/* ── Status bar ── */
.statusbar{flex-shrink:0;height:24px;background:var(--status-bg);color:#fff;display:flex;align-items:center;padding:0 10px;font-size:11.5px;gap:2px;overflow:hidden;}
.ss-item{padding:0 8px;white-space:nowrap;opacity:.95;}
.ss-clickable{cursor:pointer;border-radius:3px;}
.ss-clickable:hover{background:rgba(255,255,255,.18);}
.ss-err{color:#ffb3b3;}
.ss-warn{color:#ffe4a3;}
.ss-spacer{flex:1;}
/* ── Context menu ── */
.ctx-menu{position:fixed;z-index:300;background:#252526;border:1px solid var(--border);border-radius:6px;box-shadow:0 6px 24px rgba(0,0,0,.5);padding:4px;min-width:170px;}
.ctx-item{padding:7px 12px;font-size:12.5px;border-radius:4px;cursor:pointer;}
.ctx-item:hover{background:var(--accent-dim);color:var(--accent);}
.ctx-item.danger:hover{background:rgba(244,71,71,.15);color:var(--err);}
/* ── Modal backdrop (Quick Open / Language picker) ── */
.modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:400;display:flex;align-items:flex-start;justify-content:center;padding-top:12vh;}
.quick-open{width:560px;max-width:90vw;background:#252526;border:1px solid var(--border);border-radius:8px;box-shadow:0 12px 48px rgba(0,0,0,.6);overflow:hidden;}
.quick-open-input{width:100%;background:var(--bg);border:none;border-bottom:1px solid var(--border);color:var(--text);font-size:14px;padding:12px 14px;outline:none;}
.quick-open-results{max-height:50vh;overflow-y:auto;padding:4px;}
.quick-open-item{display:flex;align-items:center;gap:8px;padding:7px 10px;border-radius:5px;cursor:pointer;font-size:12.5px;}
.quick-open-item.active,.quick-open-item:hover{background:var(--accent-dim);}
.quick-open-item span:first-of-type{flex-shrink:0;}
.quick-open-dir{margin-left:auto;color:var(--muted);font-size:11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:220px;}
.lang-picker{width:220px;max-height:50vh;overflow-y:auto;background:#252526;border:1px solid var(--border);border-radius:8px;box-shadow:0 12px 48px rgba(0,0,0,.6);padding:4px;}
.lang-picker-item{padding:8px 12px;font-size:12.5px;border-radius:5px;cursor:pointer;text-transform:capitalize;}
.lang-picker-item:hover{background:rgba(255,255,255,.08);}
.lang-picker-item.active{color:var(--accent);background:var(--accent-dim);}
/* ── Draw mode ── */
.draw-canvas{position:absolute;inset:0;z-index:15;cursor:crosshair;}
.draw-toolbar{position:absolute;top:10px;left:50%;transform:translateX(-50%);z-index:16;background:#252526;border:1px solid var(--border);border-radius:8px;box-shadow:0 6px 24px rgba(0,0,0,.5);padding:8px 12px;display:flex;align-items:center;gap:10px;font-size:12px;}
.draw-act{background:transparent;border:1px solid var(--border);color:var(--text);padding:5px 10px;border-radius:5px;font-size:11.5px;display:flex;align-items:center;gap:5px;}
.draw-act:hover{background:rgba(255,255,255,.08);}
.draw-act.active-tool{color:var(--accent);border-color:var(--accent);background:var(--accent-dim);}
.draw-exit{border-color:var(--err);color:var(--err);}
.draw-toolbar input[type=color]{width:26px;height:26px;border:none;background:none;padding:0;border-radius:4px;overflow:hidden;}
.draw-toolbar input[type=range]{width:80px;}
/* ── Toast ── */
.xc-toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);z-index:500;background:#252526;border:1px solid var(--border);color:var(--text);font-size:12.5px;padding:10px 18px;border-radius:8px;box-shadow:0 8px 32px rgba(0,0,0,.55);}
.xc-toast-success{border-color:var(--accent);color:var(--accent);}
.xc-toast-error{border-color:var(--err);color:var(--err);}
@media (max-width:760px){
.sidebar{position:absolute;top:38px;bottom:0;left:46px;z-index:50;box-shadow:8px 0 24px rgba(0,0,0,.5);}
.tb-menu .tb-btn:not(:first-child){display:none;}
.tb-conn{max-width:80px;}
}
</style>
</head>
<body>
<div id="app"></div>
<script>
'use strict';
/* ════════════════════════════════════════════════════════════
CONSTANTS
════════════════════════════════════════════════════════════ */
const AI_EP = 'https://xcode.ahmedelgoharymessi.workers.dev/';
const DB_NAME = 'xcode-db';
const DB_STORE = 'kv';
const DB_VERSION = 1;
const MAX_SPLIT_PANES = 3; // + primary = up to 4-way split
/* ════════════════════════════════════════════════════════════
INDEXEDDB KEY/VALUE STORE
Replaces localStorage (5-10MB ceiling, synchronous, silently
drops writes on quota errors) with IndexedDB, which comfortably
holds large multi-file workspaces (including embedded images)
and can store real FileSystemHandle objects for reconnecting to
an on-disk folder between sessions.
════════════════════════════════════════════════════════════ */
let _dbPromise = null;
function openDB() {
if (_dbPromise) return _dbPromise;
_dbPromise = new Promise((resolve, reject) => {
if (!('indexedDB' in window)) { reject(new Error('no-indexeddb')); return; }
const req = indexedDB.open(DB_NAME, DB_VERSION);
req.onupgradeneeded = () => {
const db = req.result;
if (!db.objectStoreNames.contains(DB_STORE)) db.createObjectStore(DB_STORE);
};
req.onsuccess = () => resolve(req.result);
req.onerror = () => reject(req.error);
});
return _dbPromise;
}
async function idbGet(key) {
try {
const db = await openDB();
return await new Promise((resolve, reject) => {
const tx = db.transaction(DB_STORE, 'readonly');
const rq = tx.objectStore(DB_STORE).get(key);
rq.onsuccess = () => resolve(rq.result);
rq.onerror = () => reject(rq.error);
});
} catch (e) { return undefined; }
}
async function idbSet(key, value) {
try {
const db = await openDB();
return await new Promise((resolve, reject) => {
const tx = db.transaction(DB_STORE, 'readwrite');
tx.objectStore(DB_STORE).put(value, key);
tx.oncomplete = () => resolve(true);
tx.onerror = () => reject(tx.error);
});
} catch (e) { return false; }
}
async function idbDel(key) {
try {
const db = await openDB();
return await new Promise((resolve, reject) => {
const tx = db.transaction(DB_STORE, 'readwrite');
tx.objectStore(DB_STORE).delete(key);
tx.oncomplete = () => resolve(true);
tx.onerror = () => reject(tx.error);
});
} catch (e) { return false; }
}
/* ════════════════════════════════════════════════════════════
STATE
════════════════════════════════════════════════════════════ */
const DEFAULT_STATE = {
files: {},
openTabs: [],
activeTab: null,
fileTree: [],
expandedFolders: [],
autoSave: true,
activePanel: 'explorer',
showSidebar: true,
showBottom: true,
bottomHeight: 220,
activeBottomPanel: 'terminal',
searchQuery: '',
searchResults: [],
searchIdx: 0,
drawMode: false,
drawTool: 'pen',
drawColor: '#39ff14',
drawSize: 3,
editorZoom: 1,
splitPanes: [], // [{path}] — up to MAX_SPLIT_PANES extra panes beside the primary editor
splitOrientation: 'row', // 'row' (side-by-side) | 'column' (stacked)
mainPaneFlex: 1,
sidebarWidth: 250,
terminalHistory: [{text: 'X Code Terminal — type "help" for commands', cmd: false}],
terminalCwd: '',
terminalCmdHistory: [],
modified: {},
theme: {bg: '#1e1e1e', accent: '#39ff14', status: '#007acc'},
aiChatHistory: [],
diagnostics: {},
diagCollapsed: {},
problemsFilter: '',
diagRunning: {},
workspaceName: ''
};
// getDefaultState() returns a brand-new object graph every call. DEFAULT_STATE
// itself must never be spread directly — {...DEFAULT_STATE} only copies the top
// level, so every "fresh" state would still share the SAME nested files/history/
// theme objects by reference, and mutating one (e.g. terminalCmdHistory.push(...))
// would silently corrupt every other "fresh" state, including DEFAULT_STATE itself.
function getDefaultState() {
return JSON.parse(JSON.stringify(DEFAULT_STATE));
}
let state = getDefaultState();
let stateLoaded = false;
function freshRuntimeState() {
// Runtime-only fields, never persisted, reset every load.
state.contextMenu = null;
state.aiSuggestions = {}; // path -> {text, pos}
state.aiLoadingPaths = {}; // path -> bool
state.drawings = state.drawings || [];
state.previewWin = null;
state.terminalInput = '';
state.terminalHistIdx = null;
state.creatingIn = null;
state.renamingPath = null;
state.newItemName = '';
state.quickFixPanel = null;
state.aiChatLoading = false;
state.aiChatInput = '';
state.aiPopup = null;
state.quickOpen = null; // {query, results, idx}
state.findWidget = null; // {paneId, query, replace, showReplace, matchCase, wholeWord, matches, idx}
state.focusedPaneId = 'main';
state.langPicker = false;
state.toast = null;
state.pyodideStatus = 'idle'; // idle | loading | ready | error
state.connectedDirName = state.connectedDirName || null;
}
async function loadState() {
let loaded = null;
try {
loaded = await idbGet('workspace');
} catch (e) {}
if (!loaded) {
// migrate legacy localStorage save, if present, then drop it
try {
const legacy = localStorage.getItem('xcode-v4');
if (legacy) {
loaded = JSON.parse(legacy);
localStorage.removeItem('xcode-v4');
}
} catch (e) {}
}
if (loaded) {
state = {
...getDefaultState(),
...loaded,
expandedFolders: loaded.expandedFolders || [],
diagnostics: loaded.diagnostics || {},
aiChatHistory: (loaded.aiChatHistory || []).slice(-30),
diagCollapsed: loaded.diagCollapsed || {},
splitPanes: (loaded.splitPanes || []).slice(0, MAX_SPLIT_PANES),
terminalCmdHistory: (loaded.terminalCmdHistory || []).slice(-100),
diagRunning: {}
};
} else {
state = getDefaultState();
}
freshRuntimeState();
stateLoaded = true;
}
let _saveQueued = false;
async function saveState() {
// Debounce bursts of saves (typing, dragging) into one write per animation-ish tick.
if (_saveQueued) return;
_saveQueued = true;
setTimeout(async () => {
_saveQueued = false;
try {
const s = {
files: state.files,
openTabs: state.openTabs,
activeTab: state.activeTab,
fileTree: state.fileTree,
expandedFolders: Array.from(state.expandedFolders || []),
autoSave: state.autoSave,
activePanel: state.activePanel,
showSidebar: state.showSidebar,
showBottom: state.showBottom,
bottomHeight: state.bottomHeight,
activeBottomPanel: state.activeBottomPanel,
editorZoom: state.editorZoom,
splitPanes: state.splitPanes,
splitOrientation: state.splitOrientation,
mainPaneFlex: state.mainPaneFlex,
sidebarWidth: state.sidebarWidth,
modified: state.modified,
theme: state.theme,
aiChatHistory: (state.aiChatHistory || []).slice(-30),
diagnostics: state.diagnostics,
diagCollapsed: state.diagCollapsed,
problemsFilter: state.problemsFilter || '',
terminalCmdHistory: (state.terminalCmdHistory || []).slice(-100),
connectedDirName: state.connectedDirName || null,
workspaceName: state.workspaceName || ''
};
const ok = await idbSet('workspace', s);
if (!ok) showToast('Could not save workspace (storage unavailable)', 'error');
} catch (e) {
showToast('Save failed: ' + e.message, 'error');
}
}, 400);
}
window.addEventListener('beforeunload', () => { try { saveState(); } catch (e) {} });
/* ════════════════════════════════════════════════════════════
TOASTS (lightweight, replaces silent failure on save errors)
════════════════════════════════════════════════════════════ */
let _toastTimer = null;
function showToast(msg, kind) {
state.toast = {msg, kind: kind || 'info'};
renderToast();
clearTimeout(_toastTimer);
_toastTimer = setTimeout(() => {
state.toast = null;
renderToast();
}, 4000);
}
function renderToast() {
let el = document.getElementById('xc-toast');
if (!state.toast) {
if (el) el.remove();
return;
}
if (!el) {
el = document.createElement('div');
el.id = 'xc-toast';
document.body.appendChild(el);
}
el.className = 'xc-toast xc-toast-' + state.toast.kind;
el.textContent = state.toast.msg;
}
/* ════════════════════════════════════════════════════════════
GENERAL UTILITIES
════════════════════════════════════════════════════════════ */
function esc(s) {
return String(s).replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>');
}
function escAttr(s) {
return esc(s).replace(/"/g, '"');
}
function sp(cls, txt) {
return `<span class="tk-${cls}">${txt}</span>`;
}
function debounce(fn, ms) {
let t = null;
return function (...args) {
clearTimeout(t);
t = setTimeout(() => fn.apply(this, args), ms);
};
}
function clamp(n, lo, hi) { return Math.max(lo, Math.min(hi, n)); }
/* Insert text at the textarea's caret while preserving native undo/redo
history where the browser supports it (execCommand is deprecated but
remains the only way to splice text into a textarea without wiping
its undo stack — a plain `.value =` assignment clears it outright). */
let _execInsertSupported = null;
function insertAtCaret(ta, text) {
if (_execInsertSupported === null) {
try {
_execInsertSupported = document.queryCommandSupported &&
document.queryCommandSupported('insertText');
} catch (e) { _execInsertSupported = false; }
}
ta.focus();
if (_execInsertSupported) {
try {
const ok = document.execCommand('insertText', false, text);
if (ok) return;
} catch (e) { /* fall through to manual splice */ }
}
const s = ta.selectionStart, en = ta.selectionEnd;
const v = ta.value;
ta.value = v.slice(0, s) + text + v.slice(en);
ta.selectionStart = ta.selectionEnd = s + text.length;
ta.dispatchEvent(new Event('input', {bubbles: true}));
}
/* Replace an explicit range [from,to) with text, preserving undo where possible. */
function replaceRange(ta, from, to, text) {
ta.focus();
ta.setSelectionRange(from, to);
insertAtCaret(ta, text);
}
function pathJoin(dir, name) {
return dir ? `${dir}/${name}` : name;
}
function pathDir(p) {
const i = p.lastIndexOf('/');
return i < 0 ? '' : p.slice(0, i);
}
function pathBase(p) {
const i = p.lastIndexOf('/');
return i < 0 ? p : p.slice(i + 1);
}
function normalizeSegments(parts) {
const out = [];
for (const seg of parts) {
if (seg === '' || seg === '.') continue;
if (seg === '..') { out.pop(); continue; }
out.push(seg);
}
return out;
}
/* Resolve a (possibly relative, possibly absolute) path against cwd, unix-style. */
function resolvePath(cwd, input) {
if (!input) return cwd;
const abs = input.startsWith('/');
const base = abs ? [] : cwd.split('/').filter(Boolean);
const parts = normalizeSegments(base.concat(input.split('/')));
return parts.join('/');
}
/* ════════════════════════════════════════════════════════════
SYNTAX HIGHLIGHTERS
All tokenizers below do a single left-to-right pass and escape+
wrap each token as they go — nothing is ever re-scanned with a
second regex over already-injected HTML. (The previous CSS
highlighter chained five global regexes, each operating on the
HTML the last one produced; the moment a selector contained a
colon — `a:hover`, `@media (max-width:) `, any pseudo-class —
the "grab everything after this colon" value-regex would swallow
real <span> markup left by earlier steps and emit mismatched
tags. Scanning once, left to right, with explicit state
(in-block vs in-selector, current bracket depth) makes that whole
bug class structurally impossible instead of patching symptoms.)
════════════════════════════════════════════════════════════ */
const KEYWORDS_JS = new Set('const let var function class if else for while do switch case break continue return import export default from as new this super extends typeof instanceof in of async await try catch finally throw delete void null undefined true false static get set yield interface type enum implements abstract declare readonly namespace module keyof infer satisfies'.split(' '));
const TYPES_JS = new Set('string number boolean object any void never unknown symbol bigint Array Promise Map Set WeakMap WeakSet Object Function Date RegExp Error Symbol BigInt console window document Math JSON parseInt parseFloat isNaN isFinite NaN Infinity fetch setTimeout setInterval clearTimeout clearInterval queueMicrotask globalThis process Buffer URL URLSearchParams FormData Headers Request Response Event EventTarget'.split(' '));
/* ── JavaScript / TypeScript / JSX / TSX — single-pass lexer ── */
function hlJS(raw) {
let out = '', i = 0;
const N = raw.length;
let lastSignificant = ''; // last non-trivial token text, used for regex/division disambiguation
function isIdentStart(c) { return /[A-Za-z_$]/.test(c); }
function isIdentPart(c) { return /[\w$]/.test(c); }
function readIdent(s) {
let j = s;
while (j < N && isIdentPart(raw[j])) j++;
return j;
}
function regexAllowedHere() {
if (!lastSignificant) return true;
if (/[\w$\])\]]$/.test(lastSignificant)) {
const kwMatch = lastSignificant.match(/([A-Za-z_$][\w$]*)$/);
if (kwMatch && KEYWORDS_JS.has(kwMatch[1]) && !['this', 'super', 'true', 'false', 'null', 'undefined'].includes(kwMatch[1])) return true;
return false;
}
return true;
}
while (i < N) {
const c = raw[i];
if (/\s/.test(c)) { out += c; i++; continue; }
if (c === '/' && raw[i + 1] === '/') {
let j = raw.indexOf('\n', i);
if (j < 0) j = N;
out += sp('cmt', raw.slice(i, j));
i = j;
continue;
}
if (c === '/' && raw[i + 1] === '*') {
let j = raw.indexOf('*/', i + 2);
j = j < 0 ? N : j + 2;
out += sp('cmt', raw.slice(i, j));
i = j;
continue;
}
if (c === '`') {
const r = readTemplate(raw, i);
out += r.html;
i = r.end;
lastSignificant = '`';
continue;
}
if (c === '"' || c === "'") {
const q = c;
let j = i + 1;
while (j < N && raw[j] !== q) {
if (raw[j] === '\\') j += 2; else j++;
}
j = Math.min(j + 1, N);
out += sp('str', raw.slice(i, j));
i = j;
lastSignificant = q;
continue;
}
if (c === '/' && regexAllowedHere()) {
let j = i + 1, inClass = false, ok = false;
while (j < N) {
const cc = raw[j];
if (cc === '\\') { j += 2; continue; }
if (cc === '\n') break;
if (cc === '[') inClass = true;
else if (cc === ']') inClass = false;
else if (cc === '/' && !inClass) { ok = true; j++; break; }
j++;
}
if (ok) {
let k = j;
while (k < N && /[a-z]/i.test(raw[k])) k++;
out += sp('regex', raw.slice(i, k));
i = k;
lastSignificant = '/regex/';
continue;
}
}
if (/\d/.test(c) || (c === '.' && /\d/.test(raw[i + 1] || ''))) {
let j = i;
if (raw[j] === '0' && /[xX]/.test(raw[j + 1] || '')) {
j += 2;
while (j < N && /[\da-fA-F_]/.test(raw[j])) j++;
} else if (raw[j] === '0' && /[bB]/.test(raw[j + 1] || '')) {
j += 2;
while (j < N && /[01_]/.test(raw[j])) j++;
} else if (raw[j] === '0' && /[oO]/.test(raw[j + 1] || '')) {
j += 2;
while (j < N && /[0-7_]/.test(raw[j])) j++;
} else {
while (j < N && /[\d_]/.test(raw[j])) j++;
if (raw[j] === '.') { j++; while (j < N && /[\d_]/.test(raw[j])) j++; }
if (/[eE]/.test(raw[j] || '')) {
j++;
if (/[+-]/.test(raw[j] || '')) j++;
while (j < N && /\d/.test(raw[j])) j++;
}
}
if (raw[j] === 'n') j++;
out += sp('num', raw.slice(i, j));
i = j;
lastSignificant = '0';
continue;
}
if (c === '@' && isIdentStart(raw[i + 1] || '')) {
let j = readIdent(i + 1);
while (raw[j] === '.') { j = readIdent(j + 1); }
out += sp('fn', raw.slice(i, j)); // raw is already-escaped input (see highlight()'s dispatcher) — do not re-escape
i = j;
lastSignificant = 'x';
continue;
}
if (isIdentStart(c)) {
const j = readIdent(i);
const word = raw.slice(i, j);
let k = j;
while (k < N && /\s/.test(raw[k])) k++;
const prevNonWs = (() => {
let p = i - 1;
while (p >= 0 && /\s/.test(raw[p])) p--;
return p >= 0 ? raw[p] : '';
})();
if (KEYWORDS_JS.has(word)) {
out += sp('kw', word);
} else if (raw[k] === '(') {
out += sp('fn', esc(word));
} else if (prevNonWs === '.') {
out += sp('prop', esc(word));
} else if (TYPES_JS.has(word)) {
out += sp('type', word);
} else {
out += esc(word);
}
i = j;
lastSignificant = word;
continue;
}
out += c; // raw is already-escaped input; a bare character here is safe as-is (escaping again would double-escape &/</>)
if (!/\s/.test(c)) lastSignificant = c;
i++;
}
return out;
function readTemplate(src, start) {
let j = start + 1, html = spOpen('str') + '`';
while (j < src.length) {
const c = src[j];
if (c === '\\') { html += src.slice(j, j + 2); j += 2; continue; }
if (c === '`') { html += '`' + spClose(); j++; return {html, end: j}; }
if (c === '$' && src[j + 1] === '{') {
html += spClose();
const start2 = j;
let depth = 1, k = j + 2;
while (k < src.length && depth > 0) {
const cc = src[k];
if (cc === '{') depth++;
else if (cc === '}') depth--;
else if (cc === '`') { const r = readTemplateRaw(src, k); k = r.end - 1; }
else if (cc === '"' || cc === "'") {
const q = cc; let m = k + 1;
while (m < src.length && src[m] !== q) { if (src[m] === '\\') m += 2; else m++; }
k = m;
}
k++;
}
const exprSrc = src.slice(start2 + 2, k - 1);
html += '<span class="tk-interp">${' + hlJS(exprSrc) + '}</span>';
html += spOpen('str');
j = k;
continue;
}
html += c;
j++;
}
html += spClose();
return {html, end: j};
}
function readTemplateRaw(src, start) {
let j = start + 1;
while (j < src.length) {
if (src[j] === '\\') { j += 2; continue; }
if (src[j] === '`') { j++; break; }
if (src[j] === '$' && src[j + 1] === '{') {
let depth = 1; j += 2;
while (j < src.length && depth > 0) {
if (src[j] === '{') depth++;
else if (src[j] === '}') depth--;
j++;
}
continue;
}
j++;
}
return {end: j};
}
function spOpen(cls) { return `<span class="tk-${cls}">`; }
function spClose() { return `</span>`; }
}
/* ── HTML — single-pass tag/text scanner ── */
function hlHTML(raw) {
if (!raw) return '';
let out = '', i = 0, N = raw.length;
while (i < N) {
if (/^<script[\s>/]/i.test(raw.slice(i))) {
const r = embedBlock(raw, i, 'script', 'javascript');
out += r.html; i = r.end; continue;
}
if (/^<style[\s>/]/i.test(raw.slice(i))) {
const r = embedBlock(raw, i, 'style', 'css');
out += r.html; i = r.end; continue;
}
if (raw.slice(i, i + 4) === '<!--') {
const e = raw.indexOf('-->', i + 4);
const c = e < 0 ? raw.slice(i) : raw.slice(i, e + 3);
out += sp('cmt', esc(c)); i += c.length; continue;
}
if (raw[i] === '<' && raw[i + 1] === '!') {
const e = raw.indexOf('>', i);
const c = e < 0 ? raw.slice(i) : raw.slice(i, e + 1);
out += sp('kw', esc(c)); i += c.length; continue;
}
if (raw[i] === '<') {
const e = findTagEnd(raw, i);
out += tokenizeTag(raw.slice(i, e + 1));
i = e + 1; continue;
}
const nx = raw.indexOf('<', i);
const txt = nx < 0 ? raw.slice(i) : raw.slice(i, nx);
out += esc(txt); i += txt.length;
}
return out;
}
function findTagEnd(code, s) {
let i = s + 1, q = '', inQ = false;
while (i < code.length) {
const c = code[i];
if (inQ) { if (c === q) inQ = false; }
else if (c === '"' || c === "'") { inQ = true; q = c; }
else if (c === '>') return i;
i++;
}
return code.length - 1;
}
function embedBlock(code, start, tag, lang) {
const close = '</' + tag + '>';
const te = findTagEnd(code, start);
const cs = te + 1;
const ci = code.toLowerCase().indexOf(close.toLowerCase(), cs);
if (ci < 0) return {html: esc(code.slice(start)), end: code.length};
const cnt = code.slice(cs, ci);
const ctr = code.slice(ci, ci + close.length);
const hl = lang === 'javascript' ? hlJS(esc(cnt)) : hlCSS(cnt);
return {
html: tokenizeTag(code.slice(start, te + 1)) + sp('plain', hl) + tokenizeTag(ctr),
end: ci + close.length
};
}
function tokenizeTag(raw) {
let out = '', i = 0;
if (!raw.startsWith('<')) return esc(raw);
out += '<'; i = 1;
if (raw[i] === '/') { out += '/'; i++; }
let j = i;
while (j < raw.length && /[\w:-]/.test(raw[j])) j++;
if (j > i) out += sp('kw', esc(raw.slice(i, j)));
i = j;
while (i < raw.length) {
const c = raw[i];
if (c === '>') { out += '>'; break; }
if (c === '/' && raw[i + 1] === '>') { out += '/>'; break; }
if (/\s/.test(c)) { out += c; i++; continue; }
let k = i;
while (k < raw.length && raw[k] !== '=' && raw[k] !== '>' && !/\s/.test(raw[k])) k++;
if (k > i) { out += sp('prop', esc(raw.slice(i, k))); i = k; }
if (raw[i] === '=') {
out += '='; i++;
if (i < raw.length && (raw[i] === '"' || raw[i] === "'")) {
const q = raw[i];
const end = raw.indexOf(q, i + 1);
const ev = end < 0 ? raw.length - 1 : end;
out += sp('str', esc(raw.slice(i, ev + 1)));
i = ev + 1;
} else {
let k2 = i;
while (k2 < raw.length && raw[k2] !== '>' && !/\s/.test(raw[k2])) k2++;
out += sp('str', esc(raw.slice(i, k2)));
i = k2;
}
}
}
return out;
}
/* ── CSS / SCSS / LESS — single-pass, context-aware (fixes the pseudo-class corruption bug) ── */
function hlCSS(raw) {
// Operates on RAW (unescaped) CSS source, escaping only at each output boundary —
// unlike hlJS/hlPY/etc., this one can't safely take pre-escaped input: escaping "&"
// to "&" injects a semicolon that isn't really there in the source, and this
// tokenizer's control flow treats bare ";" as a real CSS statement terminator. Since
// "&" is the SCSS parent-selector character (constantly used as "&:hover", "&.foo"),
// pre-escaping would misparse any nested SCSS rule that references it. None of this
// tokenizer's structural decisions key off "<"/">"/"&" themselves, so working on raw
// text and escaping each captured chunk on the way out is both correct and simple.
let out = '', i = 0;
const N = raw.length;
let blockDepth = 0;
while (i < N) {
const c = raw[i];
if (/\s/.test(c)) { out += c; i++; continue; }
if (c === '/' && raw[i + 1] === '*') {
let j = raw.indexOf('*/', i + 2);
j = j < 0 ? N : j + 2;
out += sp('cmt', esc(raw.slice(i, j)));
i = j; continue;
}
if (c === '"' || c === "'") {
const q = c; let j = i + 1;
while (j < N && raw[j] !== q) { if (raw[j] === '\\') j += 2; else j++; }
j = Math.min(j + 1, N);
out += sp('str', esc(raw.slice(i, j)));
i = j; continue;
}
if (c === '{') { out += c; blockDepth++; i++; continue; }
if (c === '}') { out += c; blockDepth = Math.max(0, blockDepth - 1); i++; continue; }
if (c === ';') { out += ';'; i++; continue; } // stray/separator semicolon at either level — never re-enter chunk scanning on it
if (blockDepth === 0) {
let j = i;
while (j < N && raw[j] !== '{' && raw[j] !== '}' && raw[j] !== ';' && raw[j] !== '"' && raw[j] !== "'" && !(raw[j] === '/' && raw[j + 1] === '*')) j++;
const chunk = raw.slice(i, j);
out += highlightSelectorChunk(chunk);
i = j;
continue;