/* Claude Code Design Patterns v7 */
:root{--bg:#F7F8FC;--bg2:#FFFFFF;--bg3:#EFF1F7;--text:#0F172A;--text2:#475569;--text3:#94A3B8;--accent:#6366F1;--accent2:#818CF8;--acG:rgba(99,102,241,.10);--acG2:rgba(99,102,241,.22);--green:#10B981;--amber:#F59E0B;--red:#EF4444;--purple:#8B5CF6;--border:#E2E8F0;--borderA:rgba(99,102,241,.25);--shM:0 8px 24px rgba(0,0,0,.07);--shL:0 16px 48px rgba(0,0,0,.10);--glow:0 0 36px rgba(99,102,241,.18);--font:'Noto Sans KR',-apple-system,sans-serif;--mono:'JetBrains Mono',monospace;--conBg:#1E1E2E;--conTx:#CDD6F4}
[data-theme="dark"]{--bg:#0B0E18;--bg2:#151826;--bg3:#1E2235;--text:#E2E8F0;--text2:#94A3B8;--text3:#64748B;--border:#2A2F45;--borderA:rgba(129,140,248,.3);--acG:rgba(99,102,241,.15);--acG2:rgba(99,102,241,.28);--shM:0 8px 24px rgba(0,0,0,.35);--shL:0 16px 48px rgba(0,0,0,.5);--glow:0 0 40px rgba(99,102,241,.25)}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{font-size:18px}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.65;overflow:hidden;height:100vh;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}

/* Topbar */
.topbar{position:fixed;top:0;left:0;right:0;z-index:100;height:48px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;background:var(--bg2);border-bottom:1px solid var(--border);backdrop-filter:blur(16px);gap:12px}
[data-theme="dark"] .topbar{background:rgba(21,24,38,.88)}
.tb-left{display:flex;align-items:center;gap:10px;flex-shrink:0}
.tb-logo{font:800 1.1rem var(--mono);color:var(--accent);background:var(--acG);padding:4px 10px;border-radius:8px}
.tb-title{font-weight:700;font-size:.95rem}
.tb-center{display:flex;align-items:center;gap:16px;flex:1;justify-content:center}
.tb-status{display:flex;align-items:center;gap:12px}
.tb-timer{font:600 .72rem var(--mono);color:var(--amber);background:rgba(245,158,11,.12);padding:3px 10px;border-radius:6px;min-width:60px;text-align:center}
.tb-tokens{font:600 .72rem var(--mono);color:var(--green);background:rgba(16,185,129,.12);padding:3px 10px;border-radius:6px;min-width:90px;text-align:center}
.tb-tokens.streaming{animation:tokenPulse .5s ease infinite}
.tb-current-token{font:600 .72rem var(--mono);color:var(--accent2);background:var(--acG);padding:3px 10px;border-radius:6px;max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@keyframes tokenPulse{0%,100%{opacity:1}50%{opacity:.5}}
.tb-step-info{font:600 .72rem var(--mono);color:var(--accent2);background:var(--acG);padding:3px 10px;border-radius:6px}
.tb-speed{display:flex;align-items:center;gap:6px;font-size:.75rem;color:var(--text3)}
.tb-speed label{font-weight:600;font-size:.7rem}
.speed-range{width:80px;height:4px;-webkit-appearance:none;background:var(--border);border-radius:4px;outline:none;cursor:pointer}
.speed-range::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;border-radius:50%;background:var(--accent);cursor:pointer}
.speed-label{font:700 .68rem var(--mono);color:var(--accent);min-width:30px}
.tb-right{display:flex;align-items:center;gap:8px;flex-shrink:0}
.tb-btn{width:38px;height:38px;border:1px solid var(--border);background:var(--bg);border-radius:9px;cursor:pointer;font-size:.9rem;display:flex;align-items:center;justify-content:center;transition:all .2s;color:var(--text2)}
.tb-btn:hover{border-color:var(--accent);background:var(--acG);color:var(--accent)}
.tb-btn.active-btn{background:var(--accent);color:#fff;border-color:var(--accent)}
#lang-label{font:700 .75rem var(--mono)}
.tb-link{width:38px;height:38px;border:1px solid var(--border);background:var(--bg);border-radius:9px;display:flex;align-items:center;justify-content:center;color:var(--text3);transition:all .2s}
.tb-link:hover{border-color:var(--accent);color:var(--accent)}

.app{display:flex;height:100vh;padding-top:48px}

/* Left */
.panel-left{width:240px;flex-shrink:0;height:100%;overflow-y:auto;background:var(--bg2);border-right:1px solid var(--border);display:flex;flex-direction:column;scrollbar-width:thin;scrollbar-color:var(--border) transparent}
.panel-left::-webkit-scrollbar{width:4px}.panel-left::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}
.pl-header{padding:18px 16px 14px;border-bottom:1px solid var(--border)}
.pl-header h2{font-size:1.2rem;font-weight:900}
.pl-hint{font-size:.78rem;color:var(--text3);margin-top:6px}
.pl-list{flex:1;padding:4px 0;overflow-y:auto}
.pl-item{padding:8px 14px;border-left:4px solid transparent;cursor:pointer;transition:all .25s}
.pl-item:hover{background:var(--bg3)}
.pl-item.active{background:var(--acG);border-left-color:var(--accent)}
.pl-item.done-pat{opacity:.5}
.pl-item.done-pat .pl-num{background:var(--green);color:#fff}
.pl-row{display:flex;align-items:center;gap:8px}
.pl-num{font:800 .72rem var(--mono);color:var(--accent);background:var(--acG);width:30px;height:30px;display:flex;align-items:center;justify-content:center;border-radius:8px;flex-shrink:0;transition:all .3s}
.pl-item.active .pl-num{background:var(--accent);color:#fff}
.pl-emoji{font-size:1.2rem;flex-shrink:0}
.pl-row strong{font-size:.9rem;font-weight:700}
.pl-exs{max-height:0;overflow:hidden;opacity:0;transition:max-height .35s,opacity .25s,margin .25s}
.pl-item.active .pl-exs{max-height:300px;opacity:1;margin-top:8px}
.pl-ex{display:flex;align-items:center;gap:6px;padding:6px 10px;margin:3px 0;background:var(--bg2);border:1px solid var(--border);border-radius:8px;font-size:.82rem;cursor:pointer;transition:all .2s}
.pl-ex:hover{border-color:var(--accent);background:var(--acG)}
.pl-ex code{font-family:var(--mono);font-size:.76rem;color:var(--accent);background:none}
.pl-src{display:block;padding:4px 10px;margin:2px 0;font-size:.74rem;color:var(--accent);border-radius:5px;transition:background .2s}
.pl-src:hover{background:var(--acG)}
.pl-footer{padding:12px 16px;border-top:1px solid var(--border);font-size:.72rem;color:var(--text3);text-align:center}
.pl-footer a{color:var(--accent)}
.pl-version{font:500 .65rem var(--mono);color:var(--text3);margin-top:4px}

/* Center */
.panel-center{flex:1;height:100%;display:flex;flex-direction:column;overflow:hidden}

/* Pattern Hero */
.pat-hero{display:none;padding:5px 16px;background:var(--bg2);border-bottom:1px solid var(--border);gap:10px;align-items:center;min-height:36px}
.pat-hero.show{display:flex}
.pat-hero-text{flex:1;min-width:0}
.pat-hero-title{font-size:1.05rem;font-weight:800;margin-bottom:3px}
.pat-hero-desc{font-size:.82rem;color:var(--text2);line-height:1.5}
.pat-hero-tags{display:flex;gap:6px;margin-top:6px;flex-wrap:wrap}
.pat-hero-tags span{font:600 .68rem var(--mono);padding:2px 8px;border-radius:5px}
.tag-in{background:rgba(16,185,129,.12);color:var(--green)}
.tag-out{background:rgba(139,92,246,.12);color:var(--purple)}

/* Diagram */
.diagram-wrap{flex:1;position:relative;overflow:hidden}
[data-theme="dark"] .diagram-wrap{background:transparent}
/* Current pattern overlay */
.current-pattern-label{position:absolute;top:10px;right:24px;z-index:5;font:900 1.4rem var(--mono);color:var(--accent);opacity:.3;letter-spacing:-.01em;pointer-events:none;text-align:right;line-height:1.1;transition:all .5s}
.current-step-label{position:absolute;top:44px;right:24px;z-index:5;font:900 48px var(--font);color:var(--text);opacity:.85;pointer-events:none;text-align:right;line-height:1.15;transition:all .4s ease;max-width:55%;letter-spacing:-.03em}
[data-theme="dark"] .current-pattern-label{opacity:.25}
[data-theme="dark"] .current-step-label{opacity:.7;color:var(--text)}
/* Prompt icon on nodes */
.prompt-icon{position:absolute;top:-8px;right:30px;width:28px;height:28px;border-radius:50%;background:var(--amber);color:#fff;font:700 .75rem var(--mono);display:flex;align-items:center;justify-content:center;box-shadow:0 2px 10px rgba(245,158,11,.4);z-index:25;cursor:pointer;opacity:0;transform:scale(0);transition:all .3s cubic-bezier(.34,1.56,.64,1);letter-spacing:-.02em}
.prompt-icon.show{opacity:1;transform:scale(1)}
.prompt-icon:hover{transform:scale(1.15)}
.prompt-tooltip{position:absolute;bottom:calc(100% + 8px);right:0;width:320px;padding:14px 16px;background:var(--conBg);color:var(--conTx);font:400 .8rem/1.6 var(--mono);border-radius:12px;box-shadow:var(--shL);border:1px solid rgba(255,255,255,.08);z-index:100;opacity:0;pointer-events:none;transform:translateY(6px);transition:all .25s;white-space:pre-wrap}
.prompt-icon:hover .prompt-tooltip{opacity:1;pointer-events:auto;transform:translateY(0)}

#three-canvas,#flow-canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
#three-canvas{z-index:0}#flow-canvas{z-index:1}
.diagram{position:absolute;inset:0;z-index:2;display:grid;grid-template-columns:repeat(5,1fr);grid-template-rows:repeat(8,1fr);gap:8px;padding:10px 14px;align-content:stretch;overflow-y:auto;scrollbar-width:none}
.diagram::-webkit-scrollbar{display:none}

/* Nodes — compact 2-line layout */
.dg-node{position:relative;display:flex;align-items:center;gap:0;padding:8px 12px;background:var(--bg2);border:2px solid var(--border);border-radius:10px;transition:all .5s cubic-bezier(.4,0,.2,1);cursor:pointer;z-index:3}
.dg-node.dimmed{opacity:.08;transform:scale(.92);filter:blur(2px);pointer-events:none}
.dg-node.flow-node{border-color:var(--border);opacity:.45}
.dg-node.done-node{border-color:var(--acG2);opacity:.65}
.dg-node.stepping{border-color:var(--accent);box-shadow:var(--glow),var(--shM);animation:stepPulse .7s ease;z-index:10;opacity:1!important;transform:scale(1.04)}
@keyframes stepPulse{0%{transform:scale(1)}40%{transform:scale(1.08)}100%{transform:scale(1.04)}}
.step-num{position:absolute;top:-10px;left:-8px;width:26px;height:26px;display:flex;align-items:center;justify-content:center;border-radius:50%;font:800 .7rem var(--mono);color:#fff;background:var(--accent);box-shadow:0 2px 8px rgba(99,102,241,.4);z-index:20;opacity:0;transform:scale(0);transition:all .3s cubic-bezier(.34,1.56,.64,1)}
.step-num.show{opacity:1;transform:scale(1)}
.step-num.parallel{background:var(--amber);box-shadow:0 2px 8px rgba(245,158,11,.4)}
.nd-info{display:flex;flex-direction:column;gap:1px;min-width:0;width:100%}
.nd-info strong{font-size:1rem;font-weight:800;letter-spacing:-.01em;line-height:1.2}
.nd-fn{font-size:.75rem;color:var(--text2);line-height:1.3;display:block;margin-top:1px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nd-sub{font-size:.75rem;color:var(--text3)}
.nd-src{display:none}
.nd-badge{position:absolute;top:-10px;right:-8px;padding:3px 10px;border-radius:12px;font:700 .7rem var(--mono);color:#fff;background:var(--accent);opacity:0;transform:scale(.7);transition:all .35s;white-space:nowrap;z-index:20;pointer-events:none}
.nd-badge.show{opacity:1;transform:scale(1)}
.flow-label{position:absolute;padding:4px 10px;border-radius:9px;font:600 .7rem var(--mono);color:#fff;background:rgba(99,102,241,.85);backdrop-filter:blur(4px);opacity:0;pointer-events:none;z-index:30;white-space:nowrap;transform:translate(-50%,-50%) scale(.7);transition:all .35s cubic-bezier(.34,1.56,.64,1)}
.flow-label.show{opacity:1;transform:translate(-50%,-50%) scale(1)}
.flow-label::after{content:'';position:absolute;bottom:-5px;left:50%;transform:translateX(-50%);border-left:5px solid transparent;border-right:5px solid transparent;border-top:5px solid rgba(99,102,241,.85)}
.flow-label.parallel-label{background:rgba(245,158,11,.85)}.flow-label.parallel-label::after{border-top-color:rgba(245,158,11,.85)}
.nd-input{border-color:#BBF7D0;background:linear-gradient(135deg,var(--bg2),#f0fdf4)}
[data-theme="dark"] .nd-input{border-color:#166534;background:linear-gradient(135deg,var(--bg2),#0a1f14)}
.nd-ext{border-color:#C4B5FD;background:linear-gradient(135deg,var(--bg2),#f5f3ff)}
[data-theme="dark"] .nd-ext{border-color:#5B21B6;background:linear-gradient(135deg,var(--bg2),#1a1030)}
.nd-engine{border-width:3px;border-color:var(--borderA);background:linear-gradient(135deg,var(--bg2),#eef0ff)}
[data-theme="dark"] .nd-engine{background:linear-gradient(135deg,var(--bg2),#171b35)}
.nd-engine .nd-info strong{font-size:1.1rem}
.nd-output{border-color:#DDD6FE;background:linear-gradient(135deg,var(--bg2),#ede9fe)}
[data-theme="dark"] .nd-output{border-color:#5B21B6;background:linear-gradient(135deg,var(--bg2),#1a1030)}
.nd-sup{opacity:.5;border-style:dashed;padding:6px 10px;min-height:auto}
.nd-sup .nd-info strong{font-size:.88rem}
.nd-sup.flow-node,.nd-sup.stepping,.nd-sup.done-node{opacity:1;border-style:solid}

/* Terminal */
.terminal{height:130px;flex-shrink:0;background:var(--conBg);border-top:2px solid rgba(99,102,241,.15);display:flex;flex-direction:column}
.term-bar{display:flex;align-items:center;gap:10px;padding:8px 16px;border-bottom:1px solid rgba(255,255,255,.05)}
.term-dots{display:flex;gap:5px}
.dot{width:10px;height:10px;border-radius:50%}
.dot.r{background:#FF5F57}.dot.y{background:#FFBD2E}.dot.g{background:#28CA41}
.term-title{font:400 .75rem var(--mono);color:rgba(255,255,255,.3);flex:1}
.term-step-ind{font:700 .68rem var(--mono);color:var(--accent2);padding:2px 8px;background:rgba(99,102,241,.15);border-radius:5px}
.term-body{flex:1;padding:10px 16px;overflow-y:auto;font:400 .95rem/1.65 var(--mono);scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.1) transparent}
.term-body::-webkit-scrollbar{width:4px}.term-body::-webkit-scrollbar-thumb{background:rgba(255,255,255,.1);border-radius:4px}
.term-prompt{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.term-prefix{color:#89B4FA;font-weight:700;font-size:.95rem}
.term-input{color:var(--conTx);font-size:.88rem}
.term-cursor{display:inline-block;width:8px;height:16px;background:#A6E3A1;animation:blink 1s step-end infinite}
@keyframes blink{50%{opacity:0}}
.term-output{color:#CDD6F4;white-space:pre-wrap;line-height:1.6;font-size:.92rem}
.term-output .tk{display:inline;opacity:0;animation:tokenIn .12s ease forwards}
@keyframes tokenIn{to{opacity:1}}
.t-comment{color:#6C7086}.t-fn{color:#89B4FA}.t-kw{color:#CBA6F7}.t-str{color:#A6E3A1}.t-num{color:#FAB387}.t-warn{color:#F9E2AF}.t-err{color:#F38BA8}.t-step{color:#89B4FA;font-weight:700}

/* Learn Popover (hover) */
.learn-popover{position:fixed;z-index:200;width:380px;max-height:400px;overflow-y:auto;background:var(--bg2);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shL);padding:18px 22px;pointer-events:none;opacity:0;transform:translateY(8px) scale(.97);transition:opacity .25s,transform .25s cubic-bezier(.4,0,.2,1);scrollbar-width:thin;scrollbar-color:var(--border) transparent}
.learn-popover.show{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}
[data-theme="dark"] .learn-popover{background:#1a1d2e;border-color:#2A2F45}
.learn-popover::-webkit-scrollbar{width:3px}.learn-popover::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
.lp-header{font-size:1.05rem;font-weight:800;margin-bottom:10px;color:var(--accent)}
.lp-body{font-size:.85rem;color:var(--text2);line-height:1.7;margin-bottom:12px}
.lp-code{font:400 .78rem/1.55 var(--mono);background:var(--conBg);color:var(--conTx);padding:12px 14px;border-radius:10px;overflow-x:auto;margin-bottom:12px;white-space:pre;border:1px solid rgba(255,255,255,.06)}
.lp-src{font:600 .78rem var(--mono);color:var(--accent)}
.lp-src:hover{text-decoration:underline}

/* Help Panel */
.help-overlay{position:fixed;inset:0;z-index:300;background:rgba(0,0,0,.55);backdrop-filter:blur(8px);display:none;align-items:center;justify-content:center;padding:24px}
.help-overlay.show{display:flex}
.help-panel{background:var(--bg2);border:1px solid var(--border);border-radius:20px;max-width:680px;width:100%;max-height:85vh;overflow-y:auto;box-shadow:var(--shL);padding:32px 36px;position:relative;scrollbar-width:thin}
[data-theme="dark"] .help-panel{background:#1a1d2e;border-color:#2A2F45}
.help-close{position:absolute;top:14px;right:18px;background:none;border:none;font-size:1.6rem;color:var(--text3);cursor:pointer;width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:10px;transition:all .2s}
.help-close:hover{background:var(--acG);color:var(--accent)}
.help-content h2{font-size:1.4rem;font-weight:900;margin-bottom:20px;padding-right:40px}
.help-content h3{font-size:1.05rem;font-weight:700;margin:20px 0 10px;color:var(--accent)}
.help-content p{font-size:.9rem;color:var(--text2);line-height:1.8;margin-bottom:12px}
.help-content ul{margin:8px 0 16px 20px;font-size:.88rem;color:var(--text2);line-height:1.8}
.help-content li{margin-bottom:8px}
.help-content strong{color:var(--text);font-weight:700}
.help-content a{color:var(--accent);text-decoration:underline}

.hover-tip{position:fixed;z-index:9999;padding:10px 14px;background:var(--conBg);color:var(--conTx);font:400 .82rem/1.5 var(--mono);border-radius:10px;box-shadow:var(--shL);border:1px solid rgba(255,255,255,.08);max-width:360px;pointer-events:none;opacity:0;transform:translateY(6px);transition:opacity .2s,transform .2s}
.hover-tip.show{opacity:1;transform:translateY(0)}

/* Share bar */
.share-bar{display:flex;align-items:center;gap:8px;padding:6px 16px;background:var(--bg2);border-top:1px solid var(--border);flex-shrink:0}
.share-bar span{font:600 .72rem var(--mono);color:var(--text3)}
.share-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:1px solid var(--border);background:var(--bg);border-radius:8px;cursor:pointer;color:var(--text2);transition:all .2s;text-decoration:none}
.share-btn:hover{border-color:var(--accent);background:var(--acG);color:var(--accent)}
.share-btn svg{width:16px;height:16px}
.share-count{font:600 .7rem var(--mono);color:var(--accent);margin-left:auto}

@media(max-width:1200px){.panel-left{width:220px}.tb-center{gap:8px}}

@media(max-width:960px){
  .app{flex-direction:column}
  .panel-left{width:100%;height:auto;max-height:20vh;border-right:none;border-bottom:1px solid var(--border)}
  .panel-center{flex:1;min-height:0}
  .diagram{grid-template-columns:repeat(3,1fr)!important}
  .diagram .dg-node{grid-column:auto!important;grid-row:auto!important}
  .terminal{height:140px}
  .tb-center{display:none}
  .current-step-label{font-size:28px!important;max-width:45%!important;top:10px!important;right:12px!important}
  .current-pattern-label{font-size:1rem!important;right:12px!important;top:6px!important}
}

@media(max-width:680px){
  html{font-size:15px}
  .topbar{height:42px;padding:0 10px;gap:6px}
  .tb-logo{font-size:.9rem;padding:3px 8px}
  .tb-title{display:none}
  .tb-btn,.tb-link{width:32px;height:32px;border-radius:7px;font-size:.8rem}
  .tb-right{gap:5px}
  .app{padding-top:42px}

  .panel-left{max-height:none;height:auto;overflow:visible;border-bottom:1px solid var(--border)}
  .pl-header{padding:10px 12px 8px}
  .pl-header h2{font-size:.95rem}
  .pl-hint{display:none}
  .pl-list{display:flex;overflow-x:auto;padding:4px 8px;gap:4px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .pl-list::-webkit-scrollbar{display:none}
  .pl-item{padding:6px 10px;border-left:none;border-bottom:3px solid transparent;white-space:nowrap;flex-shrink:0;border-radius:8px;min-width:auto}
  .pl-item.active{background:var(--acG);border-bottom-color:var(--accent);border-left:none}
  .pl-item.done-pat{opacity:.4}
  .pl-row{gap:5px}
  .pl-num{width:24px;height:24px;font-size:.65rem;border-radius:6px}
  .pl-row strong{font-size:.78rem}
  .pl-exs{display:none!important}
  .pl-footer{display:none}

  .pat-hero{padding:6px 12px;min-height:36px;gap:8px}
  .pat-hero-title{font-size:.88rem}
  .pat-hero-desc{font-size:.72rem;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .pat-hero-tags span{font-size:.62rem;padding:2px 6px}

  body{overflow:auto;overflow-x:hidden}
  .diagram-wrap{flex:1;min-height:200px}
  .diagram{grid-template-columns:repeat(2,1fr)!important;gap:6px;padding:8px;overflow-y:auto;-webkit-overflow-scrolling:touch;scrollbar-width:thin}
  .diagram::-webkit-scrollbar{width:3px}
  .diagram::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
  .diagram .dg-node{grid-column:auto!important;grid-row:auto!important;padding:8px 10px;border-radius:9px;border-width:1.5px;min-height:auto}
  .dg-node .nd-info strong{font-size:.82rem!important;letter-spacing:-.02em}
  .nd-engine .nd-info strong{font-size:.92rem!important}
  .nd-fn{font-size:.7rem!important;margin-top:1px!important}
  .nd-src{font-size:.65rem!important;margin-top:2px!important}
  .nd-sub{font-size:.7rem!important}
  .nd-badge{font-size:.6rem!important;padding:2px 7px!important;top:-7px!important;right:-5px!important}
  .step-num{width:20px;height:20px;font-size:.6rem!important;top:-7px;left:-5px}
  .prompt-icon{width:22px;height:22px;font-size:.65rem;top:-6px;right:20px}
  .dg-node.dimmed{opacity:.04;transform:scale(.9)}

  .current-step-label{font-size:20px!important;max-width:40%!important;top:4px!important;right:8px!important;opacity:.6!important}
  .current-pattern-label{font-size:.8rem!important;right:8px!important;top:2px!important;opacity:.15!important}
  .flow-label{font-size:.6rem!important;padding:3px 7px!important;border-radius:6px!important}

  .terminal{height:120px;flex-shrink:0}
  .term-bar{padding:5px 10px;gap:6px}
  .dot{width:7px;height:7px}
  .term-title{font-size:.65rem}
  .term-step-ind{font-size:.6rem;padding:2px 6px}
  .term-body{padding:6px 10px;font-size:.78rem!important;line-height:1.5!important}
  .term-prefix{font-size:.78rem!important}
  .term-input{font-size:.72rem!important}
  .term-cursor{width:6px;height:13px}
  .term-output{font-size:.75rem!important;line-height:1.45!important}

  .learn-popover{display:none!important}
  .prompt-tooltip{display:none!important}
  .hover-tip{display:none!important}

  .help-overlay{padding:12px}
  .help-panel{padding:20px;border-radius:14px;max-height:90vh}
  .help-content h2{font-size:1.1rem}
  .help-content h3{font-size:.9rem}
  .help-content p{font-size:.82rem;line-height:1.65}
  .help-content ul{font-size:.8rem;line-height:1.65}
  .help-close{top:10px;right:12px;width:34px;height:34px;font-size:1.3rem}

  .share-bar{padding:5px 10px;gap:6px}
  .share-btn{width:28px;height:28px;border-radius:6px}
  .share-btn svg{width:14px;height:14px}
}

@media(max-width:380px){
  html{font-size:14px}
  .diagram{grid-template-columns:1fr 1fr!important;gap:4px;padding:6px}
  .dg-node .nd-info strong{font-size:.76rem!important}
  .nd-fn{display:none!important}
  .terminal{height:100px}
}

/* ============================================
   INTRO OVERLAY
   ============================================ */
.intro-overlay{position:fixed;inset:0;z-index:99999;background:var(--bg);display:flex;align-items:center;justify-content:center;transition:opacity .5s,visibility .5s}
.intro-overlay.hide{opacity:0;visibility:hidden;pointer-events:none}
[data-theme="dark"] .intro-overlay{background:#0B0E18}
.intro-card{text-align:center;max-width:480px;padding:40px 32px;animation:introFadeIn .8s ease}
@keyframes introFadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.intro-logo{display:inline-block;font:900 2.4rem var(--mono);color:var(--accent);background:var(--acG);padding:12px 24px;border-radius:16px;margin-bottom:24px;letter-spacing:-.02em}
.intro-title{font:900 1.8rem var(--font);color:var(--text);margin-bottom:12px;letter-spacing:-.02em}
.intro-sub{font:400 .95rem var(--font);color:var(--text2);line-height:1.6;margin-bottom:32px}
.intro-btn{display:inline-flex;align-items:center;gap:10px;padding:16px 36px;background:var(--accent);color:#fff;border:none;border-radius:14px;font:700 1.05rem var(--font);cursor:pointer;transition:all .25s;box-shadow:0 4px 24px rgba(99,102,241,.35)}
.intro-btn:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(99,102,241,.45);background:#5558e6}
.intro-btn:active{transform:translateY(0)}
.intro-btn-icon{font-size:1.2rem;display:flex;align-items:center}
.intro-lang-select{display:flex;gap:8px;justify-content:center;margin-bottom:24px}
.intro-lang-btn{padding:8px 20px;border:2px solid var(--border);background:var(--bg);color:var(--text2);border-radius:10px;font:600 .88rem var(--font);cursor:pointer;transition:all .2s}
.intro-lang-btn:hover{border-color:var(--accent);color:var(--accent)}
.intro-lang-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.intro-meta{margin-top:20px;font:500 .75rem var(--mono);color:var(--text3);letter-spacing:.02em}
.intro-twitter{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font:600 .82rem var(--font);color:var(--text3);text-decoration:none;transition:color .2s}
.intro-twitter:hover{color:var(--accent)}
.intro-twitter svg{flex-shrink:0}

@media(max-width:680px){
  .intro-card{padding:32px 20px}
  .intro-logo{font-size:1.8rem;padding:10px 18px}
  .intro-title{font-size:1.3rem}
  .intro-sub{font-size:.85rem;margin-bottom:20px}
  .intro-btn{padding:14px 28px;font-size:.95rem}
  .intro-lang-btn{padding:6px 16px;font-size:.82rem}
}

/* ============================================
   SOUND & KILLING POINTS — v2 Enhancement
   ============================================ */

/* Sound button states */
#btn-sound.active-btn{background:var(--accent);color:#fff;border-color:var(--accent)}
#btn-sound:not(.active-btn){color:var(--text3);opacity:.6}
#btn-sound:not(.active-btn) #sound-icon::after{content:'';position:absolute;width:2px;height:18px;background:var(--red);transform:rotate(45deg);top:50%;left:50%;margin-top:-9px;margin-left:-1px}

/* CRT Scanline Overlay */
.scanline-overlay{position:fixed;inset:0;z-index:9998;pointer-events:none;opacity:.03;background:repeating-linear-gradient(0deg,transparent,transparent 1px,rgba(0,0,0,.15) 1px,rgba(0,0,0,.15) 2px);mix-blend-mode:multiply}
[data-theme="dark"] .scanline-overlay{opacity:.04;background:repeating-linear-gradient(0deg,transparent,transparent 1px,rgba(255,255,255,.03) 1px,rgba(255,255,255,.03) 2px)}

/* Glitch text effect on pattern title */
.glitch-text{position:relative;animation:glitchShift 3s ease-in-out infinite}
@keyframes glitchShift{0%,92%,100%{transform:none;opacity:1}93%{transform:translate(-2px,1px) skew(-1deg);opacity:.85}94%{transform:translate(2px,-1px) skew(1deg);opacity:.9}95%{transform:translate(-1px,2px);opacity:.8}96%{transform:none;opacity:1}}
.glitch-text::before,.glitch-text::after{content:attr(data-text);position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;opacity:0}
.glitch-text::before{color:var(--red);animation:glitchR 3s ease-in-out infinite;clip-path:polygon(0 0,100% 0,100% 33%,0 33%)}
.glitch-text::after{color:var(--accent2);animation:glitchB 3s ease-in-out infinite;clip-path:polygon(0 66%,100% 66%,100% 100%,0 100%)}
@keyframes glitchR{0%,92%,100%{opacity:0;transform:none}93%{opacity:.7;transform:translate(-3px,0)}95%{opacity:.5;transform:translate(2px,1px)}96%{opacity:0}}
@keyframes glitchB{0%,92%,100%{opacity:0;transform:none}93.5%{opacity:.7;transform:translate(3px,0)}95.5%{opacity:.5;transform:translate(-2px,-1px)}96.5%{opacity:0}}

/* Stepping node enhanced glow */
.dg-node.stepping{border-color:var(--accent);box-shadow:var(--glow),var(--shM),0 0 60px rgba(99,102,241,.12);animation:stepPulse .7s ease,nodeGlow 1.5s ease-in-out infinite alternate}
@keyframes nodeGlow{from{box-shadow:var(--glow),var(--shM),0 0 20px rgba(99,102,241,.1)}to{box-shadow:0 0 50px rgba(99,102,241,.25),var(--shM),0 0 80px rgba(99,102,241,.08)}}

/* Achievement Toast */
.achievement-container{position:fixed;bottom:24px;right:24px;z-index:10000;display:flex;flex-direction:column;gap:10px;pointer-events:none}
.achievement-toast{display:flex;align-items:center;gap:12px;padding:14px 20px;background:var(--bg2);border:2px solid var(--accent);border-radius:14px;box-shadow:0 0 40px rgba(99,102,241,.25),var(--shL);animation:achieveIn .5s cubic-bezier(.34,1.56,.64,1) forwards;pointer-events:auto;max-width:340px;backdrop-filter:blur(12px)}
[data-theme="dark"] .achievement-toast{background:rgba(21,24,38,.95);border-color:var(--accent2)}
.achievement-toast.hide{animation:achieveOut .4s ease forwards}
@keyframes achieveIn{from{opacity:0;transform:translateX(80px) scale(.8)}to{opacity:1;transform:translateX(0) scale(1)}}
@keyframes achieveOut{to{opacity:0;transform:translateX(80px) scale(.8)}}
.achieve-icon{font-size:1.8rem;flex-shrink:0;animation:achieveIconPop .5s cubic-bezier(.34,1.56,.64,1) .1s both}
@keyframes achieveIconPop{from{transform:scale(0) rotate(-20deg)}to{transform:scale(1) rotate(0)}}
.achieve-body{min-width:0}
.achieve-title{font:700 .85rem var(--font);color:var(--text);margin-bottom:2px}
.achieve-desc{font:400 .75rem var(--font);color:var(--text2);line-height:1.4}
.achieve-combo{position:absolute;top:-8px;right:-8px;background:var(--amber);color:#fff;font:800 .65rem var(--mono);padding:3px 8px;border-radius:10px;box-shadow:0 2px 8px rgba(245,158,11,.4);animation:comboPop .4s cubic-bezier(.34,1.56,.64,1)}
@keyframes comboPop{from{transform:scale(0)}to{transform:scale(1)}}

/* Particle canvas */
#particle-canvas{position:fixed;inset:0;z-index:9997;pointer-events:none}

/* Confetti canvas */
#confetti-canvas{position:fixed;inset:0;z-index:9999;pointer-events:none;display:none}
#confetti-canvas.active{display:block}

/* Terminal enhanced cursor glow */
.term-cursor{display:inline-block;width:8px;height:16px;background:#A6E3A1;animation:blink 1s step-end infinite;box-shadow:0 0 8px rgba(166,227,161,.5)}

/* Data rain text (matrix effect) */
.data-rain{position:absolute;font:600 .65rem var(--mono);color:var(--accent);opacity:0;pointer-events:none;z-index:4;animation:dataRainFall 1.5s ease-in forwards;white-space:nowrap}
@keyframes dataRainFall{0%{opacity:.8;transform:translateY(0)}60%{opacity:.4}100%{opacity:0;transform:translateY(120px)}}

/* Pulse ring on active node */
.pulse-ring{position:absolute;top:50%;left:50%;width:100%;height:100%;border:2px solid var(--accent);border-radius:12px;transform:translate(-50%,-50%);animation:pulseRingExpand 1s ease-out forwards;pointer-events:none;z-index:1}
@keyframes pulseRingExpand{0%{transform:translate(-50%,-50%) scale(1);opacity:.6}100%{transform:translate(-50%,-50%) scale(1.5);opacity:0}}

/* Interactive node hover spark */
.dg-node:not(.dimmed):hover{transition:all .2s}
.dg-node:not(.dimmed):hover::after{content:'';position:absolute;inset:-4px;border-radius:16px;border:1px solid var(--accent);opacity:.3;animation:sparkBorder .6s ease-out forwards;pointer-events:none}
@keyframes sparkBorder{0%{opacity:.5;transform:scale(.98)}50%{opacity:.3;transform:scale(1.02)}100%{opacity:0;transform:scale(1.05)}}

/* Speed lines during fast animation */
.speed-lines{position:absolute;inset:0;z-index:1;pointer-events:none;opacity:0;transition:opacity .3s}
.speed-lines.active{opacity:1}

/* Combo counter display */
.combo-display{position:fixed;top:60px;right:24px;z-index:100;font:900 1.4rem var(--mono);color:var(--amber);opacity:0;transform:scale(.5);transition:all .4s cubic-bezier(.34,1.56,.64,1);pointer-events:none;text-shadow:0 0 20px rgba(245,158,11,.4)}
.combo-display.show{opacity:1;transform:scale(1)}
.combo-display .combo-num{font-size:2.2rem;display:block;line-height:1}
.combo-display .combo-label{font-size:.7rem;color:var(--text3);font-weight:600;letter-spacing:.05em}

@media(max-width:680px){
  .achievement-container{bottom:12px;right:12px;left:12px}
  .achievement-toast{max-width:100%;padding:10px 14px}
  .achieve-icon{font-size:1.4rem}
  .achieve-title{font-size:.78rem}
  .achieve-desc{font-size:.68rem}
  .combo-display{top:50px;right:12px;font-size:1rem}
  .combo-display .combo-num{font-size:1.6rem}
  .scanline-overlay{display:none}
}