/* MEPVirtual brand skin (dark default, light alternative) */
:root{
  --bg:#eef2f8; --panel:#ffffff; --panel2:#f3f6fb; --line:#d3dbe8; --ink:#0b1329; --mute:#56627a;
  --cyan:#0e7490; --copper:#b8642a; --ok:#15803d; --warn:#b45309; --bad:#c62828; --violet:#6d28d9;
  --stage:#dde5f1; --shadow:0 10px 30px rgba(11,19,41,.15);
  --font:"Bahnschrift","DIN Alternate","Roboto Condensed","Arial Narrow",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Consolas,monospace;
  color-scheme:light;
}
:root[data-theme="dark"]{
  --bg:#0b1329; --panel:#111b36; --panel2:#0d1630; --line:#233260; --ink:#e8eef9; --mute:#8f9dbd;
  --cyan:#22d3ee; --copper:#e08a4b; --ok:#3ddc84; --warn:#f5b83d; --bad:#ff5a5f; --violet:#b388ff;
  --stage:#070e22; --shadow:0 12px 34px rgba(0,0,0,.45);
  color-scheme:dark;
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){ --bg:#0b1329; --panel:#111b36; --panel2:#0d1630; --line:#233260; --ink:#e8eef9; --mute:#8f9dbd; --cyan:#22d3ee; --copper:#e08a4b; --ok:#3ddc84; --warn:#f5b83d; --bad:#ff5a5f; --stage:#070e22; color-scheme:dark; } }
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;height:100%}
body{background:var(--bg);color:var(--ink);font-family:var(--font);font-variant-numeric:tabular-nums;line-height:1.45;-webkit-font-smoothing:antialiased;overflow-x:hidden}
button,select,input{font:inherit;color:inherit}
a{color:var(--cyan)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.muted{color:var(--mute)} .small{font-size:.82rem} .bad{color:var(--bad)} .warn{color:var(--warn)} .ok{color:var(--ok)} .on{color:var(--bad);font-weight:700}
.boot{position:fixed;inset:0;display:grid;place-items:center;font-size:1.1rem;color:var(--mute)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:40px;padding:8px 14px;border-radius:10px;border:1px solid var(--line);background:var(--panel2);cursor:pointer;font-weight:600;text-decoration:none;color:var(--ink)}
.btn:hover:not(:disabled){border-color:var(--cyan)}
.btn.main{background:var(--cyan);border-color:var(--cyan);color:var(--bg)}
.btn.ghost{background:transparent}
.btn.small{min-height:34px;padding:5px 10px;font-size:.86rem}
.btn.tiny{min-height:28px;padding:2px 8px;font-size:.78rem;border-radius:7px}
.btn.big{min-height:48px;font-size:1rem}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn[aria-pressed="true"]{border-color:var(--cyan);box-shadow:inset 0 0 0 1px var(--cyan)}
.icon-btn{border:1px solid var(--line);background:var(--panel2);border-radius:8px;padding:6px 10px;cursor:pointer;font-size:.88rem;min-height:36px}
.chip{min-height:34px;padding:5px 12px;border-radius:999px;border:1px solid var(--line);background:var(--panel2);cursor:pointer;font-size:.84rem}
.chip:hover{border-color:var(--cyan)}
.pill{display:inline-block;padding:2px 10px;border-radius:999px;border:1px solid var(--line);font-size:.78rem;margin-left:6px}
select,input[type=number],input[type=text],input[type=search]{background:var(--panel2);border:1px solid var(--line);border-radius:8px;padding:7px 9px;min-height:36px;min-width:0}
input[type=range]{accent-color:var(--cyan)}

/* ---------- menu ---------- */
.screen{min-height:100vh;padding:24px 16px}
.menu-inner{max-width:1040px;margin:0 auto;display:grid;gap:22px}
.hero{display:flex;gap:18px;align-items:center;padding:26px;border:1px solid var(--line);border-radius:18px;background:radial-gradient(120% 140% at 0% 0%,color-mix(in srgb,var(--cyan) 18%,transparent),transparent 60%),var(--panel)}
.hero h1{margin:4px 0 8px;font-size:clamp(1.4rem,3.4vw,2.3rem);letter-spacing:.02em;line-height:1.15}
.lead{margin:0;color:var(--mute);max-width:60ch}
.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.74rem;color:var(--cyan);font-weight:700}
.menu-actions{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px}
.status-card{border:1px solid var(--line);border-radius:14px;background:var(--panel);padding:16px}
.status-card h3{margin:0 0 8px}
.status{margin:0;padding-left:18px;display:grid;gap:6px;font-size:.9rem}
.status li.ok b{color:var(--ok)}
.foot{padding:14px 16px;text-align:center;border-top:1px solid var(--line)}
.disclaimer{font-weight:700;color:var(--warn);font-size:.78rem;letter-spacing:.02em;margin:0 0 4px}
.credit{font-size:.76rem;color:var(--mute);margin:0;letter-spacing:.03em}
.start-box{display:grid;gap:10px;grid-template-columns:1fr;padding:14px;border:1px solid var(--cyan);border-radius:12px;margin-bottom:14px;background:color-mix(in srgb,var(--cyan) 7%,var(--panel))}
.start-box label{display:flex;gap:8px;align-items:center;justify-content:space-between}
.start-box p{margin:0}
.cats{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.cat h4{margin:0 0 6px}
.mcard{border:1px solid var(--line);border-radius:10px;padding:8px 10px;margin-bottom:6px;background:var(--panel2);opacity:.7}
.mcard.playable{opacity:1;border-color:var(--cyan);box-shadow:inset 3px 0 0 var(--cyan)}
.mcard .mid{font-size:.72rem;color:var(--cyan);font-weight:700}.mcard .mt{font-weight:600;font-size:.9rem}.mcard .mb{font-size:.78rem;margin-top:2px}

/* ---------- game ---------- */
#game{display:flex;flex-direction:column;min-height:100vh}
.top{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:12px;padding:8px 14px;background:var(--panel);border-bottom:1px solid var(--line);flex-wrap:wrap}
.brand{display:flex;gap:8px;align-items:center;text-decoration:none;color:var(--ink)}
.brand b{display:block;font-size:1rem}.brand small{display:block;font-size:.7rem;color:var(--mute)}
.t-mission{flex:1;min-width:180px}.t-mission b{display:block;font-size:.92rem}.t-mission small{color:var(--mute);font-size:.75rem}
.t-stats{display:flex;gap:6px}
.stat{display:flex;flex-direction:column;padding:3px 10px;border:1px solid var(--line);border-radius:10px;background:var(--panel2);min-width:70px}
.stat small{font-size:.65rem;color:var(--mute);text-transform:uppercase;letter-spacing:.08em}.stat b{font-size:.9rem}
.t-btns{display:flex;gap:6px}
.layout{flex:1;display:grid;grid-template-columns:minmax(0,1fr) 420px;min-height:0}
.stage{position:relative;min-height:520px;height:calc(100vh - 150px);background:var(--stage);overflow:hidden}
.viewport{position:absolute;inset:0;touch-action:none}
.viewport canvas{display:block;outline:none}
.labels{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.lbl3d{position:absolute;left:0;top:0;padding:2px 7px;border-radius:6px;font-size:.72rem;background:color-mix(in srgb,var(--panel) 82%,transparent);border:1px solid var(--line);white-space:nowrap;color:var(--ink)}
.overlay2d{position:absolute;inset:0;background:var(--panel);overflow:auto;padding:46px 10px 10px;z-index:4}
.overlay2d svg{width:100%;height:auto;max-height:100%;display:block}
.vtabs{position:absolute;left:10px;top:10px;z-index:6;display:flex;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--panel)}
.vtabs button{border:0;background:transparent;padding:7px 12px;cursor:pointer;font-weight:600;font-size:.84rem}
.vtabs button[aria-pressed="true"]{background:var(--cyan);color:var(--bg)}
.vtools{position:absolute;right:10px;top:10px;z-index:9;display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end;max-width:70%}
.vtools button{border:1px solid var(--line);background:color-mix(in srgb,var(--panel) 90%,transparent);border-radius:8px;padding:6px 10px;cursor:pointer;font-size:.8rem}
.vtools button[aria-pressed="true"]{border-color:var(--cyan);color:var(--cyan)}
.vtools button:disabled{opacity:.4;cursor:not-allowed}
.layers{position:absolute;top:40px;right:0;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:8px 12px;display:grid;gap:4px;font-size:.84rem;box-shadow:var(--shadow)}
.layers label{display:flex;gap:6px;align-items:center;cursor:pointer}
.layers i{width:12px;height:12px;border-radius:3px;display:inline-block}
.hud{position:absolute;left:10px;bottom:10px;z-index:5;background:color-mix(in srgb,var(--panel) 88%,transparent);border:1px solid var(--line);border-radius:10px;padding:8px 10px;font-size:.76rem;min-width:200px;pointer-events:none}
.hud div{display:flex;justify-content:space-between;gap:12px}.hud span{color:var(--mute)}
.blink{animation:blink 1s steps(2) infinite}@keyframes blink{50%{opacity:.35}}
.thermal-legend{position:absolute;right:10px;bottom:10px;z-index:5;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:6px 10px;font-size:.74rem;width:190px}
.thermal-legend i{display:block;height:10px;border-radius:5px;margin:4px 0;background:linear-gradient(90deg,hsl(238,100%,35%),hsl(180,100%,42%),hsl(90,100%,48%),hsl(40,100%,55%),hsl(0,100%,60%))}
.thermal-legend small{display:flex;justify-content:space-between;color:var(--mute)}
.tip{position:absolute;z-index:7;pointer-events:none;background:var(--ink);color:var(--bg);padding:3px 8px;border-radius:6px;font-size:.76rem}
.inspector,.drawer{position:absolute;z-index:8;background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);display:flex;flex-direction:column;max-height:calc(100% - 70px);overflow:hidden}
.inspector{left:10px;top:54px;width:min(380px,calc(100% - 20px))}
.drawer{right:10px;top:54px;width:min(420px,calc(100% - 20px))}
.insp-head{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;border-bottom:1px solid var(--line)}
.insp-head h3{margin:0;font-size:1rem}
#inspector-body,#drawer-body{overflow:auto;padding:10px 12px}
.kv{width:100%;border-collapse:collapse;font-size:.82rem;margin-bottom:8px}
.kv th{text-align:left;color:var(--mute);font-weight:500;padding:3px 6px 3px 0;vertical-align:top;width:42%}
.kv td{padding:3px 0}
.ctl{display:grid;gap:8px}
.btnrow{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin:4px 0}
.btnrow.wrap{flex-wrap:wrap}
.feeder-ctl .fid{display:inline-block;width:52px;font-size:.8rem;font-weight:700}

/* mission panel */
.mission{display:flex;flex-direction:column;border-left:1px solid var(--line);background:var(--panel);height:calc(100vh - 150px);min-height:520px}
.stepper{display:flex;gap:4px;list-style:none;margin:0;padding:10px 12px;border-bottom:1px solid var(--line)}
.stepper li{flex:1;height:26px;border-radius:6px;background:var(--panel2);border:1px solid var(--line);display:grid;place-items:center;font-size:.74rem;color:var(--mute)}
.stepper li.done{background:color-mix(in srgb,var(--ok) 25%,var(--panel2));color:var(--ink);border-color:var(--ok)}
.stepper li.cur{background:var(--cyan);color:var(--bg);border-color:var(--cyan);font-weight:700}
.step-body{flex:1;overflow:auto;padding:12px 14px}
.step-head h2{margin:2px 0 6px;font-size:1.15rem}
.objective{margin:0 0 10px;padding:8px 10px;border-radius:8px;background:var(--panel2);border-left:3px solid var(--cyan);font-size:.88rem}
.step-nav{display:flex;justify-content:space-between;gap:8px;padding:10px 12px;border-top:1px solid var(--line)}
.step-nav .btn.main{flex:1}
.q{margin:10px 0;padding:10px;border:1px solid var(--line);border-radius:10px;background:var(--panel2)}
.q.done{border-color:color-mix(in srgb,var(--ok) 60%,var(--line))}
.q-label{display:block;font-weight:600;font-size:.88rem;margin-bottom:6px}
.q-row{display:flex;gap:6px;align-items:center}
.q-row.wrap{flex-wrap:wrap}
.q-row input[type=number]{width:130px}
.q-row input[type=range]{flex:1}
.unit{color:var(--mute);font-size:.84rem}
.formula{font-family:var(--mono);font-size:.78rem;color:var(--cyan);margin:-2px 0 6px}
.fb{font-size:.84rem;margin-top:6px;min-height:1em}
.fb.ok{color:var(--ok)}.fb.bad{color:var(--bad)}.fb.warn{color:var(--warn)}
.fb .muted{font-size:.75rem}
.callout{padding:9px 11px;border-radius:9px;border:1px solid var(--line);background:color-mix(in srgb,var(--cyan) 8%,var(--panel2));font-size:.86rem;margin:10px 0}
.callout.ok{background:color-mix(in srgb,var(--ok) 10%,var(--panel2));border-color:color-mix(in srgb,var(--ok) 50%,var(--line))}
.callout.bad{background:color-mix(in srgb,var(--bad) 12%,var(--panel2));border-color:var(--bad)}
.sim-out{margin:8px 0;padding:8px 10px;border-radius:8px;font-size:.84rem;border:1px dashed var(--line)}
.sim-out:empty{display:none}
.sim-out.ok{border-color:var(--ok)}.sim-out.bad{border-color:var(--bad)}.sim-out.warn{border-color:var(--warn)}
.calc{font-family:var(--mono);font-size:.76rem;line-height:1.6}
.tasklist{margin:6px 0 10px;padding-left:20px;font-size:.88rem;display:grid;gap:6px}
.tasklist li.done{color:var(--ok)}
.tasklist li.done::marker{content:'✓  '}
.table-wrap{overflow:auto}
table.data{width:100%;border-collapse:collapse;font-size:.8rem;margin:6px 0}
table.data th,table.data td{border-bottom:1px solid var(--line);padding:4px 6px;text-align:left}
table.data .num,.num{text-align:right}
details{margin:8px 0}
details.sub{border:1px solid var(--line);border-radius:10px;padding:6px 10px;background:var(--panel)}
details.sub.done{border-color:color-mix(in srgb,var(--ok) 55%,var(--line))}
details.sub > summary{cursor:pointer;font-weight:700;font-size:.9rem;padding:4px 0}
details.sub.done > summary{color:var(--ok)}
summary{cursor:pointer}
.check{display:flex;gap:8px;align-items:flex-start;font-size:.86rem;margin:5px 0;cursor:pointer}
.check input{width:18px;height:18px;margin-top:2px;accent-color:var(--cyan)}
.dir{display:flex;flex-wrap:wrap;gap:6px}
.mini-chart{width:100%;max-width:320px;height:120px;border:1px solid var(--line);border-radius:8px;margin:6px 0;background:var(--panel2)}
.console{margin:12px 0;padding:10px;border:1px solid var(--violet);border-radius:10px;background:color-mix(in srgb,var(--violet) 6%,var(--panel2))}
.console h4{margin:0 0 6px}
.console select{max-width:100%}
.iso-state{font-size:.82rem;margin:6px 0;color:var(--warn)}
.findings{list-style:none;margin:6px 0 0;padding:0;font-size:.8rem;display:grid;gap:5px;max-height:240px;overflow:auto}
.findings li{padding:6px 8px;border-radius:6px;background:var(--panel)}
.fixes{display:grid;gap:4px;margin:8px 0}

/* toolbar */
.toolbar{display:flex;gap:4px;padding:6px 10px;background:var(--panel);border-top:1px solid var(--line);overflow-x:auto}
.toolbar button{display:flex;align-items:center;gap:6px;border:1px solid transparent;background:transparent;border-radius:9px;padding:6px 12px;cursor:pointer;white-space:nowrap;font-size:.86rem}
.toolbar button[aria-pressed="true"]{border-color:var(--cyan);background:var(--panel2)}

/* drawers content */
.hint{padding:8px 10px;border-radius:8px;background:color-mix(in srgb,var(--warn) 10%,var(--panel2));border-left:3px solid var(--warn);margin:8px 0;font-size:.86rem}
.mentor-head{display:flex;gap:10px;align-items:flex-start}
.mentor-head p{margin:0;font-size:.86rem}
.avatar{flex:none;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--panel2);border:1px solid var(--line)}
.kb{border:1px solid var(--line);border-radius:8px;padding:6px 10px}
.kb p{font-size:.84rem}
#kb-q{width:100%;margin:4px 0}
.calc-out{font-family:var(--mono);font-size:1.2rem;margin:8px 0;color:var(--cyan)}
#calc-in{flex:1}
.calc-hist{padding-left:16px;color:var(--mute);font-family:var(--mono)}
canvas.tcc{width:100%;height:340px;display:block;border:1px solid var(--line);border-radius:8px;background:var(--panel2)}
.inv{display:flex;flex-wrap:wrap;gap:6px}
.log{list-style:none;padding:0;margin:0;font-size:.8rem;display:grid;gap:4px}
.log li{padding:4px 6px;border-radius:6px;background:var(--panel2)}
.log li.bad{border-left:3px solid var(--bad)}.log li.ok{border-left:3px solid var(--ok)}.log li.warn{border-left:3px solid var(--warn)}
.big-score{font-size:3rem;font-weight:800;color:var(--cyan);display:flex;align-items:baseline;gap:12px}
.big-score small{font-size:1rem;color:var(--ink);font-weight:600}
.big-score.bad{color:var(--bad)}.big-score.ok{color:var(--ok)}
.sbar{display:grid;grid-template-columns:170px 1fr 36px;gap:8px;align-items:center;font-size:.82rem;margin:5px 0}
.track{height:9px;border-radius:9px;background:var(--panel2);border:1px solid var(--line);overflow:hidden}
.fill{height:100%;background:var(--cyan)}
.ach{display:grid;gap:8px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.ach-card{border:1px solid var(--line);border-radius:10px;padding:8px 10px;opacity:.6}
.ach-card.got{opacity:1;border-color:var(--warn)}
.ach-card p{margin:4px 0 0}

/* modal, sequence, toast */
dialog.modal{border:1px solid var(--line);border-radius:16px;background:var(--panel);color:var(--ink);padding:0;width:min(640px,calc(100% - 24px));max-height:calc(100vh - 40px);box-shadow:var(--shadow)}
dialog.modal.wide{width:min(1080px,calc(100% - 24px))}
dialog::backdrop{background:rgba(3,7,18,.6)}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--panel);z-index:1}
.modal-head h3{margin:0}
.modal-body{padding:14px 16px;overflow:auto}
.row-end{display:flex;justify-content:flex-end;gap:8px;margin-top:12px;flex-wrap:wrap}
.seq-cols{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.seq-cols h4{margin:4px 0 6px;font-size:.86rem;color:var(--mute)}
.seq-pool{display:grid;gap:6px}
.seq-card{text-align:left;padding:8px 10px;border-radius:8px;border:1px solid var(--line);background:var(--panel2);cursor:pointer;font-size:.84rem}
.seq-card:hover{border-color:var(--cyan)}
.seq-list{margin:0;padding-left:22px;display:grid;gap:6px;font-size:.84rem;min-height:60px}
.seq-list li{padding:6px 8px;border-radius:8px;background:color-mix(in srgb,var(--cyan) 10%,var(--panel2));display:flex;justify-content:space-between;gap:8px}
.seq-list .x{border:0;background:transparent;cursor:pointer;color:var(--bad);font-size:1rem}
.settings{display:grid;gap:10px}
.settings label{display:flex;justify-content:space-between;align-items:center;gap:10px}
.settings label.check{justify-content:flex-start}
.toasts{position:fixed;right:436px;bottom:70px;z-index:100;display:grid;gap:8px;width:min(380px,calc(100% - 24px))}
.toast{padding:10px 12px;border-radius:10px;background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--cyan);box-shadow:var(--shadow);font-size:.84rem;display:grid;gap:2px;transition:opacity .5s,transform .5s}
.toast.bad{border-left-color:var(--bad)}.toast.warn{border-left-color:var(--warn)}.toast.critical{border-left-color:var(--bad);background:color-mix(in srgb,var(--bad) 18%,var(--panel))}
.toast.out{opacity:0;transform:translateY(8px)}
.logo{display:inline-flex}
.help h4{margin:12px 0 4px}

/* ---------- responsive ---------- */
@media (max-width:1100px){ .layout{grid-template-columns:minmax(0,1fr) 360px} }
@media (max-width:860px){
  .layout{grid-template-columns:1fr}
  .stage{height:56vh;min-height:340px}
  .mission{height:auto;min-height:0;border-left:0;border-top:1px solid var(--line)}
  .step-body{overflow:visible}
  .top{position:static;gap:6px 8px;padding:6px 10px}
  .t-stats .stat{min-width:0;padding:2px 7px}
  .t-stats .stat small{display:none}
  .brand small,.brand b{display:none}
  .t-stats{order:2}.t-btns{order:3;margin-left:auto}
  .icon-btn{min-height:32px;padding:4px 8px}
  .t-mission{order:5;flex-basis:100%}
  .vtools{max-width:62%}
  .vtools button{padding:5px 7px;font-size:.74rem}
  .hud{font-size:.7rem;min-width:160px;padding:6px 8px}
  .inspector{top:auto;bottom:10px;max-height:62%}
  .drawer{top:auto;bottom:10px;left:10px;width:auto;max-height:70%}
  .toolbar{position:sticky;bottom:0;z-index:20}
  .toolbar span{display:none}
  .seq-cols{grid-template-columns:1fr}
  .sbar{grid-template-columns:120px 1fr 30px}
  .toasts{bottom:64px;right:12px}
}
@media (max-width:480px){ .hud{display:none} .t-btns .icon-btn{padding:5px 7px} #btn-menu{font-size:.78rem} }
@media (prefers-reduced-motion:reduce){ *{animation:none!important;transition:none!important} }
@media print{
  .top,.stage,.toolbar,.stepper,.step-nav,.toasts,#menu{display:none!important}
  .layout{display:block}.mission{height:auto;border:0}.step-body{overflow:visible}
  body{background:#fff;color:#000}
}
button.mcard{display:block;width:100%;text-align:left;cursor:pointer;font:inherit;color:inherit}
.mcard.chosen{background:color-mix(in srgb,var(--cyan) 16%,var(--panel2));box-shadow:inset 3px 0 0 var(--cyan),0 0 0 2px var(--cyan)}

.brand img{height:40px;width:auto;display:block}
.brand .logo-light{display:none}
:root[data-theme="light"] .brand .logo-light{display:block}
:root[data-theme="light"] .brand .logo-dark{display:none}
.logo img{display:block}
@media (max-width:860px){.brand img{height:32px}}