/* Mechanism Lab · Total Engineering */
:root{
  --ink:#101313;--ink2:#171b1b;--ink3:#1f2525;--line:#2c3434;--paper:#f2f1ed;--muted:#9aa5a3;
  --accent:#e84b28;--accent2:#ff7a52;--teal:#2ec4b6;--yellow:#ffc145;--vel:#3ddc97;--acc:#ff4fa3;--bad:#ff5a4f;
  --radius:14px;--top:58px
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body.ml{background:var(--ink);color:var(--paper);font-family:Inter,"Segoe UI",system-ui,Arial,sans-serif;font-size:14px;overflow-x:hidden}
button,select,input{font:inherit;color:inherit}
a{color:inherit}

.ml-top{height:var(--top);display:flex;align-items:center;gap:14px;padding:0 16px;border-bottom:1px solid var(--line);background:linear-gradient(90deg,#101313,#161a1a)}
.ml-brand{display:flex;align-items:center;gap:8px;text-decoration:none;font-weight:700;font-size:13px;white-space:nowrap;opacity:.9}
.ml-title{margin:0;font-size:19px;font-weight:800;letter-spacing:-.02em;white-space:nowrap}
.ml-title b{color:var(--accent)}
.ml-beta{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;background:var(--accent);color:#fff;border-radius:99px;padding:2px 7px;margin-left:6px;vertical-align:3px}
.ml-tabs{display:flex;background:var(--ink3);border-radius:99px;padding:3px;gap:2px}
.ml-tab{border:0;background:none;padding:7px 14px;border-radius:99px;cursor:pointer;font-weight:600;color:var(--muted);white-space:nowrap}
.ml-tab[aria-selected="true"]{background:var(--accent);color:#fff;box-shadow:0 4px 14px #e84b2855}
.ml-top-actions{margin-left:auto;display:flex;gap:8px;align-items:center}
.ml-select{display:flex;align-items:center;gap:6px;background:var(--ink3);border:1px solid var(--line);border-radius:10px;padding:0 4px 0 10px}
.ml-select span{color:var(--muted);font-size:12px}
.ml-select select{background:transparent;border:0;padding:7px 4px;max-width:210px;cursor:pointer}
.ml-select option{background:var(--ink2)}
.ml-btn{border:1px solid var(--line);background:var(--ink3);padding:7px 12px;border-radius:10px;cursor:pointer;text-decoration:none;font-weight:600;white-space:nowrap}
.ml-btn:hover{border-color:var(--accent)}
.ml-back{background:var(--paper);color:var(--ink);border-color:var(--paper)}

.ml-main{display:grid;grid-template-columns:minmax(0,1fr) 340px;grid-template-rows:minmax(0,1fr) 230px;height:calc(100vh - var(--top));height:calc(100dvh - var(--top))}
.ml-stage{position:relative;min-height:0;overflow:hidden;background:radial-gradient(circle at 30% 20%,#1b2222 0,transparent 55%),var(--ink)}
#mlCanvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none;cursor:grab}
#mlCanvas.dragging{cursor:grabbing}
#mlCanvas.over{cursor:pointer}
.ml-chips{position:absolute;left:12px;top:12px;display:flex;flex-wrap:wrap;gap:6px;max-width:calc(100% - 70px);pointer-events:none}
.ml-chip{font-size:12px;font-weight:700;padding:5px 10px;border-radius:99px;background:#0009;border:1px solid var(--line);backdrop-filter:blur(4px)}
.ml-chip.ok{border-color:#3ddc9788;color:#8ff0c2}
.ml-chip.warn{border-color:#ffc14599;color:var(--yellow)}
.ml-chip.bad{border-color:var(--bad);color:#fff;background:#ff5a4fcc;animation:mlpulse 1.2s infinite}
@keyframes mlpulse{50%{box-shadow:0 0 0 6px #ff5a4f33}}
.ml-tools{position:absolute;right:12px;top:12px;display:flex;flex-direction:column;gap:6px}
.ml-icon{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#141818e6;cursor:pointer;font-size:18px;line-height:1;display:grid;place-items:center}
.ml-icon:hover{border-color:var(--accent)}
.ml-hint{position:absolute;left:50%;bottom:74px;transform:translateX(-50%);font-size:12px;color:var(--muted);background:#000a;padding:5px 12px;border-radius:99px;pointer-events:none;transition:opacity .6s;white-space:nowrap}
.ml-hint.gone{opacity:0}
.ml-play{position:absolute;left:12px;bottom:12px;display:flex;align-items:center;gap:10px;background:#141818ee;border:1px solid var(--line);border-radius:99px;padding:6px 12px 6px 6px;max-width:calc(100% - 24px)}
.ml-playbtn{width:44px;height:44px;border-radius:50%;border:0;background:var(--accent);color:#fff;font-size:15px;cursor:pointer;box-shadow:0 6px 18px #e84b2866;flex:none}
.ml-rpm{display:flex;align-items:center;gap:8px;min-width:0}
.ml-rpm span{font-size:12px;color:var(--muted)}
.ml-rpm input{width:130px;min-width:60px}
.ml-rpm output{font-weight:700;min-width:58px;font-variant-numeric:tabular-nums}

.ml-charts{border-top:1px solid var(--line);background:var(--ink2);display:flex;flex-direction:column;min-height:0;min-width:0}
.ml-charts-head{display:flex;justify-content:space-between;gap:10px;padding:7px 14px 0;font-size:12px}
.ml-charts-head span{color:var(--muted)}
#mlChart{flex:1;min-height:0;width:100%;display:block;touch-action:none;cursor:crosshair}

.ml-side{grid-column:2;grid-row:1 / span 2;overflow-y:auto;border-left:1px solid var(--line);background:var(--ink2);padding:12px;display:flex;flex-direction:column;gap:12px}
.ml-card{background:var(--ink3);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px}
.ml-card h2{margin:0 0 10px;font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--accent2)}
.ml-card h2 small{text-transform:none;letter-spacing:0;color:var(--muted);font-weight:500}
.ml-field{display:grid;grid-template-columns:92px minmax(0,1fr) 62px;align-items:center;gap:8px;margin:6px 0}
.ml-field label{font-size:12.5px;color:#d6d9d6;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ml-field label i{display:inline-block;width:9px;height:9px;border-radius:3px;margin-right:6px;vertical-align:0}
.ml-field input[type=number]{width:100%;background:var(--ink);border:1px solid var(--line);border-radius:8px;padding:4px 6px;text-align:right;font-variant-numeric:tabular-nums}
input[type=range]{accent-color:var(--accent);width:100%;min-width:0}
.ml-seg{display:flex;margin-top:10px;background:var(--ink);border-radius:10px;padding:3px;gap:3px}
.ml-seg button{flex:1;border:0;background:none;padding:6px;border-radius:8px;cursor:pointer;color:var(--muted);font-weight:600}
.ml-seg button.on{background:var(--ink3);color:var(--paper);box-shadow:inset 0 0 0 1px var(--accent)}
.ml-read{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;margin:0;font-variant-numeric:tabular-nums}
.ml-read dt{color:var(--muted);font-size:12.5px}
.ml-read dd{margin:0;text-align:right;font-weight:600}
.ml-read dd.bad{color:var(--bad)}
.ml-read dd.warn{color:var(--yellow)}
.ml-toggles{display:grid;gap:7px}
.ml-toggles label{display:flex;align-items:center;gap:8px;cursor:pointer}
.ml-toggles input{accent-color:var(--accent)}
.sw{width:18px;height:4px;border-radius:2px;display:inline-block}
.sw-path{background:var(--accent)}.sw-vel{background:var(--vel)}.sw-acc{background:var(--acc)}.sw-lab{background:var(--paper)}
.ml-note{font-size:12px;color:var(--muted);margin:10px 0 0;line-height:1.45}
.ml-explain p{margin:0 0 9px;line-height:1.5;color:#dfe2df}
.ml-explain .eq{font-family:"Cambria Math","Times New Roman",serif;font-size:15px;background:var(--ink);border-radius:8px;padding:7px 10px;margin:0 0 9px;overflow-x:auto;white-space:nowrap}
.ml-explain .tag{display:inline-block;font-weight:800;padding:2px 9px;border-radius:99px;background:var(--accent);color:#fff;font-size:12px}
.ml-explain details{margin-top:6px;border-top:1px dashed var(--line);padding-top:8px}
.ml-explain summary{cursor:pointer;font-weight:700;color:var(--paper);margin-bottom:6px}
.ml-explain .alert{background:#ff5a4f22;border-left:3px solid var(--bad);padding:6px 9px;border-radius:6px}
.ml-explain .good{background:#3ddc9718;border-left:3px solid var(--vel);padding:6px 9px;border-radius:6px}

.ml-test{position:fixed;left:50%;top:70px;transform:translateX(-50%);z-index:50;width:min(720px,calc(100% - 24px));max-height:calc(100vh - 90px);overflow:auto;background:#0d1010f5;border:2px solid var(--accent);border-radius:14px;padding:14px 16px;font:12.5px/1.45 Consolas,Menlo,monospace;box-shadow:0 20px 60px #000c}
.ml-test h3{margin:0 0 8px;font:700 15px Inter,Segoe UI,sans-serif}
.ml-test .p{color:#8ff0c2}.ml-test .f{color:var(--bad)}
.ml-test button{float:right;border:1px solid var(--line);background:var(--ink3);border-radius:8px;padding:3px 10px;cursor:pointer}

@media (max-width:1100px){
  .ml-brand span{display:none}
  .ml-select select{max-width:150px}
}
@media (max-width:900px){
  :root{--top:auto}
  .ml-top{height:auto;flex-wrap:wrap;padding:10px 16px;gap:10px}
  .ml-title{font-size:17px}
  .ml-tabs{order:3;width:100%}
  .ml-tab{flex:1;padding:8px 6px}
  .ml-top-actions{flex-wrap:wrap;gap:6px}
  .ml-main{display:block;height:auto}
  .ml-stage{height:62vh;min-height:340px}
  .ml-charts{height:270px}
  .ml-side{border-left:0;overflow:visible;padding:12px 16px 28px}
  .ml-hint{display:none}
}
@media (max-width:560px){
  .ml-top-actions{width:100%;order:4}
  .ml-select{flex:1;min-width:0}
  .ml-select select{max-width:none;width:100%}
  .ml-rpm span{display:none}
  .ml-rpm input{width:90px}
  .ml-charts-head span{display:none}
  .ml-field{grid-template-columns:84px minmax(0,1fr) 58px}
}

/* ---------- Constructor ---------- */
.ml:not(.is-builder) #mlBuilder,.ml:not(.is-builder) .mb-only{display:none!important}
.ml.is-builder #mlClassic,.ml.is-builder .cl-only{display:none!important}
#mbCanvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none;cursor:default}
#mbCanvas.t-select{cursor:grab}#mbCanvas.dragging{cursor:grabbing}#mbCanvas.t-draw{cursor:crosshair}#mbCanvas.over{cursor:pointer}
#mbChart{flex:1;min-height:0;width:100%;display:block;touch-action:none;cursor:crosshair}
.mb-topleft{position:absolute;left:12px;top:12px;right:60px;display:flex;flex-direction:column;align-items:flex-start;gap:8px;pointer-events:none}
.mb-toolbar{display:flex;flex-wrap:wrap;gap:3px;background:#141818ee;border:1px solid var(--line);border-radius:14px;padding:4px;pointer-events:auto;max-width:100%;backdrop-filter:blur(4px)}
.mb-tool{display:flex;flex-direction:column;align-items:center;gap:2px;min-width:54px;padding:5px 6px;border:0;border-radius:10px;background:none;color:var(--muted);cursor:pointer;font-size:10.5px;font-weight:600;line-height:1.1}
.mb-tool b{font-size:17px;line-height:1;color:var(--paper);font-weight:700}
.mb-tool:hover{background:var(--ink3)}
.mb-tool.on{background:var(--accent);color:#fff;box-shadow:0 4px 14px #e84b2855}.mb-tool.on b{color:#fff}
.mb-tool:disabled{opacity:.35;cursor:default;background:none}
.mb-sep{width:1px;align-self:stretch;background:var(--line);margin:4px 2px}
.mb-chips{position:static;max-width:100%}
.ml-chip.info{border-color:#4cc9f088;color:#a9e6fa}
.mb-chartsel{display:flex;align-items:center;gap:6px}
.mb-chartsel select{background:var(--ink3);border:1px solid var(--line);border-radius:8px;padding:3px 6px;max-width:220px}
.mb-chartsel option{background:var(--ink2)}
.mb-row{display:flex;flex-wrap:wrap;gap:6px}
.mb-row .ml-btn{padding:6px 10px;font-size:12.5px}
.mb-shareout{width:100%;margin-top:8px;background:var(--ink);border:1px solid var(--line);border-radius:8px;padding:6px 8px;font-size:12px}
.mb-props p{margin:0 0 8px;color:#dfe2df;line-height:1.45}
.mb-props .mb-title{font-weight:800;font-size:15px;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.mb-props .mb-title i{width:12px;height:12px;border-radius:4px;display:inline-block}
.mb-kv{display:grid;grid-template-columns:auto minmax(0,1fr);gap:6px 10px;align-items:center;margin:6px 0}
.mb-kv label{font-size:12.5px;color:#d6d9d6}
.mb-kv input[type=number],.mb-kv select{width:100%;background:var(--ink);border:1px solid var(--line);border-radius:8px;padding:4px 6px;font-variant-numeric:tabular-nums}
.mb-kv select option{background:var(--ink2)}
.mb-check{display:flex;align-items:center;gap:8px;margin:5px 0;cursor:pointer}
.mb-check input{accent-color:var(--accent)}
.mb-dof .mb-big{display:flex;align-items:baseline;gap:10px;margin-bottom:6px}
.mb-dof .mb-big b{font-size:40px;line-height:1;font-weight:900;letter-spacing:-.03em}
.mb-dof .mb-big span{font-weight:700}
.mb-dof .eq{font-family:"Cambria Math","Times New Roman",serif;font-size:14px;line-height:1.5;background:var(--ink);border-radius:8px;padding:7px 10px;margin:6px 0 8px;white-space:normal}
.mb-dof p{margin:0 0 8px;line-height:1.45;color:#dfe2df}
.mb-dof .ok{color:#8ff0c2}.mb-dof .warn{color:var(--yellow)}.mb-dof .bad{color:var(--bad)}
@media (max-width:900px){
  .mb-topleft{right:56px}
  .mb-tool{min-width:44px;padding:4px 4px;font-size:9.5px}
  .mb-tool b{font-size:15px}
}
@media (max-width:560px){
  .mb-tool{min-width:38px}
  .mb-chartsel select{max-width:170px}
}