/* thinQtankLabs — shared lab engine layout
   Step cards down the left, dark interactive viewport on the right. */
.tl-engine{
  --navy:#0b1f3a;--navy-2:#13294b;--red:#d0102c;--red-2:#ff3b55;--ink:#14171c;
  --paper:#f4f6f9;--card:#fff;--line:#dfe4ec;--muted:#5f6b7c;--text:#18202c;
  --ok:#14a05a;--warn:#e8a317;
  --term:#0c1016;--term-2:#121821;--term-line:#1f2835;--term-txt:#d7dee8;--term-dim:#7d8a9c;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ui:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  display:flex;flex-direction:column;height:100vh;height:100dvh;min-height:440px;
  background:var(--paper);color:var(--text);font:14px/1.5 var(--ui);overflow:hidden;
}
.tl-engine *{box-sizing:border-box}
.tl-ic{width:18px;height:18px;flex:none}

/* ---------- top bar */
.tl-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 18px;
  background:var(--navy);color:#fff;border-bottom:3px solid var(--red);flex:none}
.tl-top-l,.tl-top-r{display:flex;align-items:center;gap:14px;min-width:0}
.tl-top-exit{display:flex;align-items:center;gap:6px;color:#c9d4e5;text-decoration:none;font-weight:600;font-size:13px;
  padding:6px 10px;border-radius:8px;border:1px solid rgba(255,255,255,.14);transition:.2s}
.tl-top-exit:hover{color:#fff;border-color:var(--red-2);background:rgba(208,16,44,.18)}
.tl-top-exit:hover .tl-ic{transform:translateX(-2px);color:var(--red-2)}
.tl-top-exit .tl-ic{transition:.2s}
.tl-top-title{min-width:0}
.tl-top-title h1{margin:0;font:700 17px/1.2 "Barlow Semi Condensed",var(--ui);letter-spacing:.2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tl-top-cat{display:block;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#93a4bd}
.tl-diff{font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:3px 9px;border-radius:99px;flex:none}
.tl-diff-beginner{background:#e3f6ec;color:#0d7a43}
.tl-diff-intermediate{background:#fff2d6;color:#8a5a00}
.tl-diff-expert{background:#ffe1e6;color:#a50c23}
.tl-prog{display:flex;align-items:center;gap:10px}
.tl-prog-bar{width:150px;height:8px;background:rgba(255,255,255,.14);border-radius:9px;overflow:hidden}
.tl-prog-bar span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--red),var(--red-2));transition:width .5s}
.tl-prog-txt{font-size:12px;font-weight:600;color:#dfe7f3;white-space:nowrap}
.tl-save{font-size:12px;color:#93a4bd;min-width:118px;text-align:right}
.tl-save[data-s=saved]::before{content:"\25CF  ";color:#3ad07f}
.tl-save[data-s=saving]::before{content:"\25CF  ";color:var(--warn)}
.tl-save[data-s=error]::before{content:"\25CF  ";color:var(--red-2)}
.tl-save[data-s=local]::before{content:"\25CF  ";color:#8aa0c0}

/* ---------- buttons */
.tl-btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;font:600 13px var(--ui);cursor:pointer;
  background:var(--red);color:#fff;border:1px solid var(--red);border-radius:8px;padding:8px 14px;text-decoration:none;transition:.18s}
.tl-btn:hover{background:#b00d25;transform:translateY(-1px);box-shadow:0 6px 16px -8px rgba(208,16,44,.7)}
.tl-btn:disabled{opacity:.5;cursor:default;transform:none;box-shadow:none}
.tl-btn .tl-ic{width:16px;height:16px;transition:transform .25s}
.tl-btn:hover .tl-ic-next{transform:translateX(3px)}
.tl-btn-ghost{background:transparent;color:inherit;border-color:currentColor;border-color:rgba(127,140,160,.45)}
.tl-btn-ghost:hover{background:rgba(208,16,44,.08);border-color:var(--red);color:var(--red);box-shadow:none}
.tl-top .tl-btn-ghost{color:#dfe7f3;border-color:rgba(255,255,255,.22)}
.tl-top .tl-btn-ghost:hover{color:#fff;background:rgba(208,16,44,.22);border-color:var(--red-2)}
.tl-btn-ghost:hover .tl-ic-reset,.tl-mini:hover .tl-ic-reset{transform:rotate(-200deg)}
.tl-mini{display:inline-flex;align-items:center;gap:5px;font:600 12px var(--ui);color:var(--muted);background:none;border:1px solid transparent;
  border-radius:7px;padding:4px 8px;cursor:pointer;transition:.18s}
.tl-mini .tl-ic{width:15px;height:15px;transition:transform .45s}
.tl-mini:hover{color:var(--red);border-color:rgba(208,16,44,.35);background:rgba(208,16,44,.06)}
.tl-mini:hover .tl-ic-insert{transform:translateX(2px)}

/* ---------- main split */
.tl-main{flex:1;display:grid;grid-template-columns:minmax(330px,40%) 1fr;min-height:0}
.tl-guide{overflow-y:auto;padding:16px 16px 60px;border-right:1px solid var(--line);scroll-behavior:smooth}
.tl-scenario{display:flex;gap:12px;background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#e8eef7;border-radius:12px;padding:14px 16px;margin-bottom:12px}
.tl-scenario .tl-ic{color:var(--red-2);width:22px;height:22px;margin-top:2px}
.tl-scenario b{display:block;font:700 13px var(--ui);letter-spacing:.06em;text-transform:uppercase;color:#fff;margin-bottom:2px}
.tl-scenario p{margin:0;font-size:13px;color:#c9d4e5}
.tl-guest{font-size:13px;background:#fff7e0;border:1px solid #f1d58a;border-radius:10px;padding:10px 12px;margin-bottom:12px;color:#5d4500}
.tl-guest a{color:var(--red);font-weight:700}

.tl-task{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.tl-task-h{display:flex;align-items:center;gap:6px;padding:6px 8px 6px 4px;background:#f9fafc;border-bottom:1px solid transparent}
.tl-task.is-expanded .tl-task-h{border-bottom-color:var(--line)}
.tl-task-toggle{flex:1;display:flex;align-items:center;gap:10px;background:none;border:0;cursor:pointer;text-align:left;padding:6px 8px;font:inherit;color:inherit;min-width:0}
.tl-task-n{font:700 11px var(--ui);letter-spacing:.08em;text-transform:uppercase;color:var(--red);flex:none}
.tl-task-t{font:700 15px/1.25 "Barlow Semi Condensed",var(--ui);flex:1;min-width:0}
.tl-task-c{font-size:12px;font-weight:700;color:var(--muted);background:#eef1f6;border-radius:99px;padding:2px 8px;flex:none}
.tl-task.is-done .tl-task-c{background:#e3f6ec;color:#0d7a43}
.tl-task-body{display:none;padding:10px 12px 12px}
.tl-task.is-expanded .tl-task-body{display:block}
.tl-task-intro{font-size:13px;color:var(--muted);border-left:3px solid var(--red);padding:2px 0 2px 10px;margin-bottom:10px}
.tl-task-intro p{margin:0 0 6px}
.tl-steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}

.tl-step{border:1px solid var(--line);border-radius:10px;background:#fff;transition:border-color .2s,box-shadow .2s}
.tl-step:hover{border-color:#c9d1dd}
.tl-step.is-active{border-color:var(--red);box-shadow:0 0 0 3px rgba(208,16,44,.1)}
.tl-step.is-open{box-shadow:0 8px 24px -16px rgba(11,31,58,.45)}
.tl-step-h{display:flex;align-items:center;gap:10px;width:100%;background:none;border:0;cursor:pointer;text-align:left;padding:9px 10px;font:inherit;color:inherit}
.tl-step-n{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font:700 12px var(--ui);background:#eef1f6;color:var(--muted);flex:none;transition:.2s}
.tl-step.is-active .tl-step-n{background:var(--red);color:#fff}
.tl-step.is-done .tl-step-n{background:var(--ok);color:#fff}
.tl-step.is-done .tl-step-n .tl-ic{width:15px;height:15px;stroke-width:2.6;animation:tl-pop .35s}
.tl-step-t{font-weight:600;line-height:1.3;min-width:0}
.tl-step-t small{display:block;font-size:11px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:#8b96a8}
.tl-step-b{display:none;padding:0 12px 12px 46px}
.tl-step.is-open .tl-step-b{display:block}
.tl-md p{margin:0 0 8px}
.tl-md ul{margin:0 0 8px;padding-left:18px}
.tl-engine code{font:500 12.5px var(--mono);background:#eef1f6;border-radius:5px;padding:1px 5px;color:#0b1f3a}
.tl-cmd{display:flex;align-items:center;gap:8px;background:var(--term);border-radius:8px;padding:8px 8px 8px 12px;margin:4px 0 10px}
.tl-cmd code{flex:1;background:none;color:#7ee2a8;padding:0;white-space:pre-wrap;word-break:break-all}
.tl-cmd code::before{content:"$ ";color:var(--term-dim)}
.tl-cmd .tl-mini{color:#c9d4e5}
.tl-cmd .tl-mini:hover{color:#fff;background:rgba(208,16,44,.3);border-color:var(--red-2)}
.tl-hint{margin:0 0 8px;font-size:13px}
.tl-hint summary{display:inline-flex;align-items:center;gap:5px;cursor:pointer;color:#8a5a00;font-weight:600;list-style:none}
.tl-hint summary::-webkit-details-marker{display:none}
.tl-hint summary .tl-ic{width:16px;height:16px;transition:.3s}
.tl-hint summary:hover .tl-ic,.tl-hint[open] summary .tl-ic{color:var(--warn);filter:drop-shadow(0 0 4px rgba(232,163,23,.7))}
.tl-hint>div{background:#fff8e6;border-radius:8px;padding:8px 10px;margin-top:6px}
.tl-hint>div p{margin:0}
.tl-why{font-size:13px;background:#f3f6fb;border-radius:8px;padding:9px 11px;margin:0 0 8px;color:#38465a}
.tl-why b{display:block;font-size:11px;letter-spacing:.07em;text-transform:uppercase;color:var(--navy);margin-bottom:2px}
.tl-why p{margin:0}
.tl-after{font-size:13px;background:#eaf8f0;border:1px solid #bfe8d1;border-radius:8px;padding:9px 11px;margin:0 0 8px;color:#174a30;animation:tl-in .4s}
.tl-after b{display:flex;align-items:center;gap:6px;font-size:11px;letter-spacing:.07em;text-transform:uppercase;color:#0d7a43;margin-bottom:2px}
.tl-after b .tl-ic{width:15px;height:15px}
.tl-after p{margin:0}
.tl-step-a{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:4px}
.tl-waiting{font-size:12px;color:#8b96a8;font-style:italic}
.tl-waiting::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--red);margin-right:6px;animation:tl-pulse 1.4s infinite}

.tl-q{margin:4px 0 6px}
.tl-q-choices{display:flex;flex-direction:column;gap:6px}
.tl-choice{display:flex;align-items:center;gap:10px;text-align:left;font:500 13px var(--ui);background:#fff;border:1px solid var(--line);border-radius:8px;padding:8px 10px;cursor:pointer;transition:.18s;color:inherit}
.tl-choice span{width:22px;height:22px;display:grid;place-items:center;border-radius:6px;background:#eef1f6;font-weight:700;font-size:12px;flex:none}
.tl-choice:hover:not(:disabled){border-color:var(--red);transform:translateX(2px)}
.tl-choice:hover:not(:disabled) span{background:var(--red);color:#fff}
.tl-choice.is-right{border-color:var(--ok);background:#eaf8f0}
.tl-choice.is-right span{background:var(--ok);color:#fff}
.tl-choice.is-wrong{border-color:var(--red);animation:tl-shake .4s}
.tl-q-input{display:flex;gap:8px}
.tl-q-input input{flex:1;font:500 13px var(--mono);border:1px solid var(--line);border-radius:8px;padding:8px 10px;min-width:0}
.tl-q-input input:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(208,16,44,.12)}
.tl-q-input.is-wrong input{border-color:var(--red);animation:tl-shake .4s}
.tl-q-msg{font-size:12px;color:var(--red);min-height:16px}

/* ---------- viewport */
.tl-vp{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--term);color:var(--term-txt)}
.tl-vp-bar{display:flex;align-items:center;gap:14px;padding:0 14px;height:44px;background:var(--term-2);border-bottom:1px solid var(--term-line);flex:none}
.tl-dots{display:flex;gap:6px}
.tl-dots i{width:11px;height:11px;border-radius:50%;background:#3a4556}
.tl-dots i:first-child{background:var(--red)}
.tl-tabs{display:flex;gap:2px;height:100%}
.tl-tab{display:flex;align-items:center;gap:7px;font:600 13px var(--ui);color:var(--term-dim);background:none;border:0;border-bottom:2px solid transparent;padding:0 12px;cursor:pointer;transition:.18s}
.tl-tab .tl-ic{width:16px;height:16px;transition:transform .25s}
.tl-tab:hover{color:#fff}
.tl-tab:hover .tl-ic{transform:translateY(-1px) scale(1.08);color:var(--red-2)}
.tl-tab.is-on{color:#fff;border-bottom-color:var(--red)}
.tl-tab.is-on .tl-ic{color:var(--red-2)}
.tl-vp-host{margin-left:auto;font:12px var(--mono);color:var(--term-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tl-vp-body{flex:1;min-height:0;position:relative}
.tl-term{position:absolute;inset:0;overflow-y:auto;padding:14px 16px 20px;font:13.5px/1.55 var(--mono);cursor:text;outline:none}
.tl-term-out{white-space:pre-wrap;word-break:break-word}
.tl-term-out .tl-dim{color:var(--term-dim)}
.tl-term-out .tl-note{color:#f5c76b}
.tl-term-out .tl-err{color:#ff7b8a}
.tl-p-u{color:#7ee2a8;font-weight:600}
.tl-p-d{color:#7cb4ff;font-weight:600}
.tl-term-line{display:flex;align-items:baseline}
.tl-term-prompt{white-space:nowrap}
.tl-term-in{flex:1;min-width:40px;background:none;border:0;outline:none;color:var(--term-txt);font:inherit;padding:0;caret-color:var(--red-2)}
.tl-files{position:absolute;inset:0;overflow-y:auto;padding:16px;font-size:13px}
.tl-files[hidden],.tl-term[hidden]{display:none}
.tl-up{background:var(--term-2);border:1px solid var(--term-line);border-radius:12px;padding:14px;margin-bottom:14px}
.tl-up-h{display:flex;align-items:center;gap:8px;margin-bottom:10px;color:#fff}
.tl-up-h .tl-ic{color:var(--red-2)}
.tl-up-dest{display:flex;align-items:center;gap:8px;color:var(--term-dim);margin-bottom:10px;flex-wrap:wrap}
.tl-up-dest select{background:var(--term);color:var(--term-txt);border:1px solid var(--term-line);border-radius:7px;padding:5px 8px;font:12.5px var(--mono)}
.tl-drop{display:flex;flex-direction:column;align-items:center;gap:4px;border:2px dashed #33415a;border-radius:10px;padding:18px;text-align:center;cursor:pointer;transition:.2s;color:#c9d4e5}
.tl-drop .tl-ic{width:30px;height:30px;color:#7d8a9c;transition:.3s}
.tl-drop small{color:var(--term-dim)}
.tl-drop:hover,.tl-drop.is-over,.tl-drop:focus{border-color:var(--red);background:rgba(208,16,44,.08);outline:none}
.tl-drop:hover .tl-ic,.tl-drop.is-over .tl-ic{color:var(--red-2);transform:translateY(-3px)}
.tl-provided{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:12px;color:var(--term-dim)}
.tl-provided .tl-btn-ghost{color:#dfe7f3;border-color:#33415a}
.tl-provided .tl-btn-ghost:hover{color:#fff;border-color:var(--red-2);background:rgba(208,16,44,.15)}
.tl-provided .tl-btn-ghost:hover .tl-ic{color:var(--red-2);transform:rotate(-8deg)}
.tl-tree{background:var(--term-2);border:1px solid var(--term-line);border-radius:12px;padding:10px 6px}
.tl-tree-h{display:flex;align-items:center;gap:8px;padding:2px 10px 8px;color:#fff}
.tl-tree-h small{margin-left:auto;color:var(--term-dim)}
.tl-tree-h .tl-ic{color:#7cb4ff}
.tl-tree ul{list-style:none;margin:0;padding:0}
.tl-f{display:flex;align-items:center;gap:8px;padding:5px 10px 5px calc(10px + var(--d)*20px);border-radius:7px;font-family:var(--mono);font-size:12.5px}
.tl-f .tl-ic{width:16px;height:16px;color:#7d8a9c;transition:.2s}
.tl-f-dir .tl-ic{color:#7cb4ff}
.tl-f-file{cursor:pointer}
.tl-f-file:hover{background:rgba(208,16,44,.12)}
.tl-f-file:hover .tl-ic{color:var(--red-2);transform:translateX(2px)}
.tl-f-n{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tl-f-ro .tl-ic{width:13px;height:13px;color:#f5c76b}
.tl-f-s{color:var(--term-dim);font-size:11.5px}

/* ---------- toast / modal */
.tl-toast{position:fixed;left:50%;top:76px;transform:translate(-50%,-20px);opacity:0;pointer-events:none;background:var(--ok);color:#fff;
  font-weight:600;padding:10px 18px;border-radius:99px;box-shadow:0 10px 30px -10px rgba(0,0,0,.5);transition:.3s;z-index:50}
.tl-toast.is-on{opacity:1;transform:translate(-50%,0)}
.tl-toast.is-bad{background:var(--red)}
.tl-modal{position:fixed;inset:0;background:rgba(9,18,33,.66);display:grid;place-items:center;z-index:60;padding:16px;animation:tl-in .3s}
.tl-modal-c{background:#fff;border-radius:16px;max-width:440px;width:100%;padding:28px;text-align:center;border-top:5px solid var(--red)}
.tl-modal-c h2{margin:6px 0 6px;font:700 26px "Barlow Semi Condensed",var(--ui)}
.tl-modal-c p{color:var(--muted)}
.tl-trophy{width:64px;height:64px;margin:0 auto;border-radius:50%;display:grid;place-items:center;background:#ffe9ec}
.tl-trophy .tl-ic{width:34px;height:34px;color:var(--red);animation:tl-wave 1.6s ease-in-out infinite;transform-origin:20% 90%}
.tl-modal-a{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:14px}

@keyframes tl-pop{0%{transform:scale(.3)}70%{transform:scale(1.25)}100%{transform:scale(1)}}
@keyframes tl-in{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
@keyframes tl-shake{20%,60%{transform:translateX(-4px)}40%,80%{transform:translateX(4px)}}
@keyframes tl-pulse{0%,100%{opacity:1}50%{opacity:.25}}
@keyframes tl-wave{0%,100%{transform:rotate(0)}50%{transform:rotate(-10deg)}}

/* ---------- responsive */
@media (max-width:900px){
  .tl-engine{height:auto;min-height:100vh;overflow:visible}
  .tl-main{grid-template-columns:1fr;grid-template-rows:auto auto}
  .tl-guide{border-right:0;border-bottom:1px solid var(--line);max-height:none;overflow:visible;padding-bottom:16px}
  .tl-vp{position:sticky;bottom:0;height:50vh;min-height:300px;box-shadow:0 -10px 30px -12px rgba(0,0,0,.45)}
  .tl-top{flex-wrap:wrap;padding:10px 12px}
  .tl-prog-bar{width:90px}
  .tl-save{display:none}
  .tl-top-r .tl-btn span{display:none}
}
@media (max-width:520px){
  .tl-step-b{padding-left:12px}
  .tl-top-exit span{display:none}
  .tl-vp-host{display:none}
}
@media (prefers-reduced-motion:reduce){.tl-engine *{animation:none!important;transition:none!important}}

/* ---- IOS lab device tabs (tl-ios engine) ---- */
.tl-devtabs{display:flex;gap:6px;flex-wrap:wrap}
.tl-dev{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.06);color:#c7d2e2;border:1px solid rgba(255,255,255,.14);border-radius:8px;padding:5px 11px;font:600 13px Inter,system-ui,sans-serif;cursor:pointer}
.tl-dev .tl-ic{width:16px;height:16px}
.tl-dev:hover{background:rgba(255,255,255,.12)}
.tl-dev.is-on{background:#e11d2a;border-color:#e11d2a;color:#fff}
.tl-term-prompt{color:#7ee081;font-weight:600;white-space:pre}
/* IOS console: no scrollbar — long output pages with --More-- (space=page, enter=line, q=quit) */
.tl-term{scrollbar-width:none;-ms-overflow-style:none}
.tl-term::-webkit-scrollbar{width:0;height:0;display:none}
.tl-term-prompt.tl-more{background:#d7dee8;color:#0b1f2e;font-weight:700;border-radius:2px}
/* toolbar the Capture & Syslog panel (encor-monitor.js) injects its buttons into */
.tl-vp-bar .sl-tools{margin-left:auto;display:flex;gap:6px;align-items:center}
/* topology diagram panel in the guide */
.tl-topo{margin:0 0 16px;border:1px solid var(--line);border-radius:12px;background:#fff;overflow:hidden}
.tl-topo>summary{display:flex;align-items:center;gap:8px;cursor:pointer;padding:11px 14px;font:700 13px "Barlow Semi Condensed",var(--ui);letter-spacing:.3px;text-transform:uppercase;color:var(--ink,#1d2430);list-style:none}
.tl-topo>summary::-webkit-details-marker{display:none}
.tl-topo>summary .tl-ic{width:16px;height:16px;color:var(--red-2,#e11d2a)}
.tl-topo[open]>summary{border-bottom:1px solid var(--line)}
.tl-topo-b{padding:16px 14px;background:linear-gradient(180deg,#f8fafc,#eef2f7)}
.tl-topo-b svg{width:100%;height:auto}

/* IOS labs on desktop: cap the console so it reads as a sized terminal window
   (a floating console card) rather than a full-height dark slab. The guide
   column keeps the prominence; the console stays a comfortable height and
   scrolls internally. */
@media (min-width:901px){
  /* Console fills the column height (so the prompt + --More-- are always on-screen)
     but is inset as a card. The --More-- pager handles long output. */
  .tl-engine .tl-vp{ margin:12px 12px 12px 0; border-radius:14px; overflow:hidden; box-shadow:0 14px 34px -16px rgba(0,0,0,.55); border:1px solid var(--term-line); }
}