*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;background:#0b1020;color:#e8eefc}

.app{height:100vh}
.view{display:none;height:100%}
.view.view-active{display:block}

.split{display:flex;height:100%}
.left{width:38%;min-width:360px;border-right:1px solid rgba(255,255,255,.08);display:flex;flex-direction:column;min-height:0;overflow:hidden}
.left-scroll{flex:1;min-height:0;overflow:auto;padding-bottom:16px}
.right{flex:1;display:flex;flex-direction:column;min-width:0}

.header{padding:16px 16px 8px;display:flex;align-items:flex-start;gap:12px}
.header-actions{margin-left:auto}
.title{font-size:18px;font-weight:700}
.subtitle{font-size:12px;opacity:.7;margin-top:4px}

button{background:#1a2757;border:1px solid rgba(255,255,255,.12);color:#e8eefc;border-radius:10px;padding:8px 10px;font-size:12px;cursor:pointer}
button:hover{background:#22336f}
button:disabled{opacity:.45;cursor:not-allowed}
.ghost{background:transparent}

.lab-shell{max-width:1100px;margin:0 auto;padding:18px 16px}
.lab{padding:14px;border:1px solid rgba(255,255,255,.10);border-radius:14px;background:rgba(255,255,255,.04)}
.lab-full{margin-top:14px}
.lab-title{font-size:12px;font-weight:700;opacity:.9;margin-bottom:10px}
.lab-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.lab-card{border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:10px;background:rgba(255,255,255,.03)}
.lab-card-title{font-size:12px;font-weight:700;margin-bottom:8px}
.lab-card label{display:block;font-size:11px;opacity:.75;margin:8px 0 4px}
.lab-card select{width:100%;background:#0f1732;color:#e8eefc;border:1px solid rgba(255,255,255,.12);border-radius:10px;padding:7px 8px;font-size:12px}
.lab-result{margin-top:10px;font-size:12px;line-height:1.4;opacity:.95}
.lab-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:12px;flex-wrap:wrap}

.lab-preview{margin-top:12px}
.lab-preview-title{font-size:12px;font-weight:700;opacity:.9;margin:8px 0}
.lab-preview-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.lab-preview-card{border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:10px;background:rgba(255,255,255,.03);min-width:0}
.lab-preview-card-title{font-size:12px;font-weight:700;margin-bottom:8px}

.landing{margin-top:14px}
.landing-hero{padding:14px;border:1px solid rgba(255,255,255,.10);border-radius:14px;background:rgba(255,255,255,.04)}
.landing-title{font-size:12px;font-weight:800;opacity:.95;margin-bottom:8px}
.landing-sub{font-size:12px;line-height:1.5;opacity:.9}
.landing-steps{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}
.landing-servers{margin-top:10px;padding:14px;border:1px solid rgba(255,255,255,.10);border-radius:14px;background:rgba(255,255,255,.04)}
.landing-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.landing-card{border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:12px;background:rgba(255,255,255,.03);min-width:0}
.landing-card-title{font-size:12px;font-weight:800;margin-bottom:10px}
.landing-ol{margin:0;padding-left:18px;font-size:12px;line-height:1.6;opacity:.92}
.landing-ol li{margin:6px 0}
.landing-kv{display:grid;grid-template-columns:140px 1fr;gap:6px;font-size:12px}
.landing-kv div{padding:6px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.landing-actions{display:flex;justify-content:flex-end;margin-top:12px}
code{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);padding:2px 6px;border-radius:8px}

.controls{display:flex;flex-wrap:wrap;gap:8px;padding:8px 16px 12px}
.chat{padding:0 16px 16px}

.walkthrough{margin:6px 16px 0;padding:12px;border:1px solid rgba(255,255,255,.10);border-radius:14px;background:rgba(255,255,255,.04)}
.walkthrough-title{font-size:12px;font-weight:700;opacity:.9;margin-bottom:10px}
.walkthrough-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px 12px}
.chk{font-size:12px;opacity:.92;display:flex;gap:8px;align-items:center}
.chk input{transform:translateY(1px)}
.walkthrough-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.walkthrough-step{margin-top:10px;font-size:12px;line-height:1.4;opacity:.95}

.quick-scenarios{margin:6px 16px 0;border:1px solid rgba(255,255,255,.10);border-radius:14px;background:rgba(255,255,255,.04)}
.quick-scenarios summary{cursor:pointer;list-style:none;padding:10px 12px;font-size:12px;font-weight:700;opacity:.9}
.quick-scenarios summary::-webkit-details-marker{display:none}
.quick-scenarios[open] summary{border-bottom:1px solid rgba(255,255,255,.08)}
.quick-scenarios .controls{padding:10px 12px 12px}

.bubble{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);padding:10px 12px;border-radius:12px;margin:8px 0;font-size:12px;line-height:1.4}
.bubble.http-ix2rx{background:rgba(124,255,178,.08);border-color:rgba(124,255,178,.22)}
.bubble.http-rx2ix{background:rgba(124,168,255,.10);border-color:rgba(124,168,255,.22)}
.bubble.sys{opacity:.9}

.tabs{display:flex;gap:6px;padding:10px;border-bottom:1px solid rgba(255,255,255,.08);flex-wrap:wrap}
.tab{background:transparent;border:1px solid rgba(255,255,255,.10);padding:8px 10px;border-radius:10px;opacity:.8}
.tab.active{background:#1a2757;opacity:1}

.panel{flex:1;overflow:auto;min-width:0}
.tab-panel{display:none;padding:14px}
.tab-panel.active{display:block}

pre{margin:0;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);padding:12px;border-radius:12px;overflow:auto;max-height:42vh}

.row{display:flex;gap:10px;flex-wrap:wrap;align-items:stretch}
.card{flex:1;min-width:320px;display:flex;flex-direction:column}
.card pre{flex:1}
.kv{display:grid;grid-template-columns:160px 1fr;gap:6px;font-size:12px}
.kv div{padding:6px 0;border-bottom:1px solid rgba(255,255,255,.06)}

.ok{color:#7CFFB2}
.bad{color:#FF7C7C}

@media (max-width: 980px){
  .split{flex-direction:column}
  .left{width:100%;min-width:0;border-right:none;border-bottom:1px solid rgba(255,255,255,.08);max-height:45vh}
  .right{height:55vh}
  .lab-grid{grid-template-columns:1fr}
  .lab-preview-grid{grid-template-columns:1fr}
  .walkthrough-grid{grid-template-columns:1fr}
  .landing-steps{grid-template-columns:1fr}
  .landing-grid{grid-template-columns:1fr}
  pre{max-height:30vh}
}