:root {
  --bg: #0d1220; --bg2: #121a2c; --bg3: #18223a; --line: #263252; --line2: #34426a;
  --text: #d9e0f2; --muted: #8a96b4; --dim: #5e6a88;
  --on: #ffb84d; --bus: #5ad1ff; --ok: #4fe0a0; --err: #ff5d6c; --sel: #9ab8ff; --violet: #b48cff; --mint: #57e3c1;
  --r: 10px;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box; }
* { scrollbar-width: thin; scrollbar-color: #2c3858 transparent; }
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-thumb { background: #2c3858; border-radius: 6px; }
::-webkit-scrollbar-track { background: transparent; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); font: 14px/1.5 var(--sans); overflow: hidden; }
button { font: inherit; color: inherit; cursor: pointer; }
button:focus-visible, input:focus-visible, textarea:focus-visible, canvas:focus-visible { outline: 2px solid var(--sel); outline-offset: 2px; }
canvas:focus-visible { outline-offset: -2px; }
code, .mono { font-family: var(--mono); font-size: .92em; }
code { background: #1b2540; padding: 1px 5px; border-radius: 5px; color: #e7ecff; }
b { color: #fff; }
[hidden] { display: none !important; }

#app { display: grid; grid-template-rows: 52px 1fr; height: 100dvh; }
#top { display: flex; align-items: center; gap: 8px; padding: 0 12px; border-bottom: 1px solid var(--line); background: linear-gradient(#111829, #0e1424); }
.brand { display: flex; align-items: center; gap: 9px; background: none; border: 0; padding: 6px 8px; border-radius: 8px; color: var(--on); font-weight: 800; letter-spacing: .02em; font-size: 16px; }
.brand span { color: var(--text); }
.brand:hover { background: #1a2338; }
.crumbs { display: flex; align-items: baseline; gap: 10px; min-width: 0; white-space: nowrap; overflow: hidden; }
.crumbs .ch { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
.crumbs .lv { font-weight: 700; font-size: 15px; overflow: hidden; text-overflow: ellipsis; }
.crumbs .solved { color: var(--ok); font-size: 12px; }
.spacer { flex: 1; }
.tb { background: var(--bg3); border: 1px solid var(--line); border-radius: 8px; padding: 6px 12px; font-weight: 600; font-size: 13px; }
.tb:hover { border-color: var(--line2); background: #1e2944; }
.tb.icon { width: 34px; padding: 6px 0; }
.tb.off { color: var(--dim); text-decoration: line-through; }

#work { display: grid; grid-template-columns: 172px 1fr 352px; min-height: 0; }
#work.program { grid-template-columns: 0 1fr 352px; }
#work.program #bin, #work.program #stage { display: none; }

/* ---------- bin ---------- */
#bin { border-right: 1px solid var(--line); background: var(--bg2); overflow-y: auto; padding: 10px 8px 24px; }
#bin h3 { margin: 12px 6px 6px; font-size: 11px; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); font-weight: 700; }
#bin h3:first-child { margin-top: 2px; }
.pitem { display: grid; grid-template-columns: 52px 1fr; align-items: center; gap: 6px; width: 100%; padding: 5px 6px; margin: 2px 0; border-radius: 8px; border: 1px solid transparent; background: none; text-align: left; touch-action: none; user-select: none; }
.pitem:hover { background: var(--bg3); border-color: var(--line); }
.pitem canvas { width: 52px; height: 34px; pointer-events: none; }
.pitem .nm { font-weight: 700; font-size: 12.5px; line-height: 1.2; }
.pitem .ct { display: block; color: var(--dim); font-size: 10.5px; font-family: var(--mono); }
.pitem.new .nm::after { content: "new"; margin-left: 6px; font-size: 9px; padding: 1px 5px; border-radius: 6px; background: var(--on); color: #241703; vertical-align: 1px; }
.bin-empty { color: var(--dim); font-size: 12px; padding: 4px 8px; }

/* ---------- stage ---------- */
#stage { position: relative; min-width: 0; min-height: 0; overflow: hidden; }
#board { position: absolute; inset: 0; display: block; touch-action: none; }
.float { position: absolute; z-index: 5; background: rgba(18,26,44,.92); border: 1px solid var(--line2); border-radius: 12px; box-shadow: 0 8px 30px rgba(0,0,0,.35); backdrop-filter: blur(6px); }
#toolbar { left: 50%; bottom: 14px; transform: translateX(-50%); display: flex; align-items: center; gap: 2px; padding: 4px; }
#toolbar button { min-width: 34px; height: 32px; border: 0; background: none; border-radius: 8px; font-size: 16px; padding: 0 8px; }
#toolbar button:hover { background: #24304f; }
#toolbar button:disabled { opacity: .35; cursor: default; background: none; }
#toolbar #tTick { font-size: 13px; font-weight: 700; color: var(--mint); }
#toolbar .sep { width: 1px; height: 20px; background: var(--line2); margin: 0 4px; }
#toolbar:not(.clock) .clockonly { display: none; }
#tCycles { color: var(--muted); font-size: 12px; padding: 0 8px 0 4px; }
#stats { right: 12px; top: 12px; padding: 6px 12px; font-size: 12px; color: var(--muted); display: flex; gap: 14px; }
#stats b { color: var(--text); font-weight: 700; }
#stats .warn { color: var(--err); }

#inspector { left: 12px; top: 12px; padding: 10px 12px; min-width: 210px; max-width: 300px; }
#inspector h4 { margin: 0 0 2px; font-size: 14px; display: flex; justify-content: space-between; gap: 10px; align-items: baseline; }
#inspector h4 small { color: var(--muted); font-weight: 500; font-family: var(--mono); font-size: 11px; }
#inspector p { margin: 4px 0 8px; color: var(--muted); font-size: 12px; line-height: 1.45; }
#inspector .row { display: flex; align-items: center; gap: 6px; margin-top: 8px; flex-wrap: wrap; }
#inspector label { font-size: 12px; color: var(--muted); min-width: 46px; }
#inspector input[type=text], #inspector input[type=number] { width: 100%; flex: 1; min-width: 60px; background: var(--bg); border: 1px solid var(--line2); color: var(--text); border-radius: 7px; padding: 4px 7px; font: 12px var(--mono); }
.seg { display: inline-flex; border: 1px solid var(--line2); border-radius: 8px; overflow: hidden; }
.seg button { border: 0; background: none; padding: 3px 9px; font-size: 12px; font-family: var(--mono); }
.seg button + button { border-left: 1px solid var(--line2); }
.seg button.on { background: var(--sel); color: #0d1220; font-weight: 700; }
.chip-btn { border: 1px solid var(--line2); background: var(--bg3); border-radius: 7px; padding: 3px 9px; font-size: 12px; }
.chip-btn:hover { border-color: var(--sel); }
.chip-btn.danger:hover { border-color: var(--err); color: var(--err); }

#busEdit { padding: 6px; display: flex; gap: 6px; align-items: center; }
#busEdit input { width: 84px; background: var(--bg); color: var(--text); border: 1px solid var(--line2); border-radius: 7px; padding: 4px 6px; font: 13px var(--mono); }
#busEdit span { color: var(--muted); font: 11px var(--mono); }

/* ---------- panel ---------- */
#panel { border-left: 1px solid var(--line); background: var(--bg2); overflow-y: auto; position: relative; }
#panelToggle { display: none; }
#panelBody { padding: 16px 18px 40px; }
.brief h2 { margin: 0 0 2px; font-size: 20px; letter-spacing: -.01em; }
.brief .kicker { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .1em; font-weight: 700; }
.brief p, .brief li { color: #c3cbe0; font-size: 13.5px; }
.brief p { margin: 8px 0; }
.brief ul, .brief ol { padding-left: 20px; margin: 6px 0; }
.brief .how { background: #172140; border: 1px solid #263465; border-radius: 9px; padding: 8px 10px; color: #b8c6f0; font-size: 12.5px; }
.brief table.ops, .brief table.bits { border-collapse: collapse; font-family: var(--mono); font-size: 12px; margin: 8px 0; }
.brief table.ops td { padding: 3px 9px; border: 1px solid var(--line); }
.brief table.ops td:nth-child(odd) { color: var(--on); text-align: center; }
.brief table.bits th, .brief table.bits td { padding: 3px 9px; border: 1px solid var(--line); text-align: center; }
.brief table.bits th { color: var(--muted); font-weight: 500; }
.pins { display: flex; gap: 14px; margin: 10px 0 2px; font-size: 12px; color: var(--muted); flex-wrap: wrap; }
.pins span b { font-family: var(--mono); font-weight: 600; color: var(--text); }
.actions { display: flex; gap: 8px; margin: 14px 0 6px; flex-wrap: wrap; }
.primary { background: var(--on); color: #261802; border: 0; border-radius: 9px; padding: 8px 16px; font-weight: 800; letter-spacing: .01em; }
.primary:hover { filter: brightness(1.08); }
.primary:disabled { opacity: .5; cursor: default; }
.ghost { background: none; border: 1px solid var(--line2); border-radius: 9px; padding: 7px 12px; font-weight: 600; font-size: 13px; }
.ghost:hover { border-color: var(--sel); }
.hint { margin: 8px 0; padding: 8px 10px; border-left: 3px solid var(--violet); background: #1a1d3a; border-radius: 0 8px 8px 0; font-size: 13px; color: #d2cbf5; }
.score { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin: 12px 0; }
.score div { background: var(--bg3); border: 1px solid var(--line); border-radius: 9px; padding: 6px 8px; }
.score small { display: block; color: var(--muted); font-size: 10.5px; text-transform: uppercase; letter-spacing: .08em; }
.score b { font-family: var(--mono); font-size: 15px; white-space: nowrap; }
.score .gold { color: var(--on); }

.result { margin-top: 10px; border-radius: 10px; padding: 10px 12px; font-size: 13px; }
.result.pass { background: rgba(79,224,160,.1); border: 1px solid rgba(79,224,160,.35); }
.result.fail { background: rgba(255,93,108,.08); border: 1px solid rgba(255,93,108,.35); }
.result h4 { margin: 0 0 4px; font-size: 14px; }
.result.pass h4 { color: var(--ok); }
.result.fail h4 { color: var(--err); }
.result p { margin: 4px 0; }
.tt { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 11.5px; margin-top: 8px; }
.tt th { color: var(--muted); font-weight: 500; text-align: left; padding: 3px 5px; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: var(--bg2); }
.tt td { padding: 2px 5px; border-bottom: 1px solid #1a2440; white-space: nowrap; }
.tt td.sep { border-left: 1px solid var(--line); }
.tt tr { cursor: pointer; }
.tt tr:hover td { background: #1b2542; }
.tt tr.bad td { background: rgba(255,93,108,.12); }
.tt tr.bad td.got { color: var(--err); font-weight: 700; }
.tt tr.ok td.mark { color: var(--ok); }
.tt tr.cur td { outline: 1px solid var(--sel); }
.ttwrap { max-height: 300px; overflow: auto; border: 1px solid var(--line); border-radius: 8px; }
.note { color: var(--muted); font-size: 12px; }

/* ---------- modal ---------- */
#modal { position: fixed; inset: 0; background: rgba(5,8,16,.7); z-index: 50; display: grid; place-items: center; padding: 20px; backdrop-filter: blur(3px); }
#modal .sheet, #phone .sheet { background: var(--bg2); border: 1px solid var(--line2); border-radius: 16px; padding: 22px 24px; max-width: min(960px, 100%); max-height: calc(100dvh - 40px); overflow: auto; box-shadow: 0 30px 80px rgba(0,0,0,.5); }
.sheet h2 { margin: 0 0 6px; }
.sheet .close { float: right; background: none; border: 0; font-size: 22px; color: var(--muted); line-height: 1; padding: 4px 8px; }
.map { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 18px; margin-top: 14px; }
.map .chap h3 { margin: 0; font-size: 13px; }
.map .chap p { margin: 0 0 8px; color: var(--muted); font-size: 12px; }
.lvl { display: flex; align-items: center; gap: 8px; width: 100%; text-align: left; background: var(--bg3); border: 1px solid var(--line); border-radius: 9px; padding: 6px 9px; margin: 4px 0; font-size: 13px; }
.lvl:hover:not(:disabled) { border-color: var(--sel); }
.lvl:disabled { opacity: .45; cursor: default; }
.lvl .n { font-family: var(--mono); color: var(--dim); font-size: 11px; width: 18px; }
.lvl .t { flex: 1; font-weight: 600; }
.lvl .m { font-size: 12px; }
.lvl.cur { border-color: var(--on); }
.lvl.done .m { color: var(--ok); }
.lvl .m.gold { color: var(--on); }
.win { text-align: center; max-width: 440px; }
.win .big { font-size: 46px; line-height: 1; margin: 6px 0; }
.win h2 { color: var(--ok); }
.unlock { display: inline-flex; gap: 10px; align-items: center; background: var(--bg3); border: 1px solid var(--line2); border-radius: 12px; padding: 8px 14px; margin: 10px 0; }
.unlock canvas { width: 80px; height: 48px; }
.keys { display: grid; grid-template-columns: auto 1fr; gap: 6px 16px; font-size: 13px; margin-top: 10px; }
.keys kbd { font-family: var(--mono); background: var(--bg3); border: 1px solid var(--line2); border-bottom-width: 2px; border-radius: 6px; padding: 1px 6px; font-size: 11.5px; white-space: nowrap; }
.menu-list { display: grid; gap: 8px; margin-top: 12px; min-width: 280px; }
.menu-list button { text-align: left; }

#toast { position: fixed; left: 50%; bottom: 70px; transform: translate(-50%, 20px); background: #1f2a47; border: 1px solid var(--line2); color: var(--text); padding: 8px 14px; border-radius: 10px; font-size: 13px; opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 60; max-width: 90vw; }
#toast.show { opacity: 1; transform: translate(-50%, 0); }
#toast.err { border-color: var(--err); }
#toast.ok { border-color: var(--ok); }

#phone { position: fixed; inset: 0; z-index: 70; display: grid; place-items: center; background: var(--bg); padding: 24px; }
#phone p { color: var(--muted); }

/* ---------- machine (program levels) ---------- */
#machine { display: grid; grid-template-columns: minmax(300px, 1fr) minmax(340px, 440px); min-height: 0; grid-column: 2; }
.code { display: flex; flex-direction: column; min-height: 0; border-right: 1px solid var(--line); }
.codebar { display: flex; gap: 6px; align-items: center; padding: 8px 10px; border-bottom: 1px solid var(--line); background: var(--bg2); flex-wrap: wrap; }
.codebar .grow { flex: 1; }
.codebar select { background: var(--bg3); color: var(--text); border: 1px solid var(--line2); border-radius: 8px; padding: 5px 6px; font-size: 12.5px; }
.codebar input[type=range] { width: 90px; accent-color: var(--on); }
.ed { position: relative; flex: 1; min-height: 0; display: grid; grid-template-columns: 74px 1fr; overflow: auto; font: 13.5px/21px var(--mono); }
.gutter { background: #0f1628; color: var(--dim); text-align: right; padding: 10px 8px 40vh 0; user-select: none; white-space: pre; border-right: 1px solid var(--line); }
.gutter .a { color: #46587f; font-size: 11px; margin-right: 6px; }
.gutter .e { color: var(--err); font-weight: 700; }
.gutter .pc { color: var(--on); }
.edwrap { position: relative; }
.ed pre, .ed textarea { margin: 0; padding: 10px 12px 40vh; font: inherit; white-space: pre; tab-size: 8; border: 0; min-width: 100%; }
.ed pre { position: absolute; inset: 0 auto auto 0; pointer-events: none; color: var(--text); }
.ed textarea { position: relative; display: block; width: 100%; height: 100%; min-height: 100%; resize: none; background: transparent; color: transparent; caret-color: var(--on); outline: none; overflow: hidden; }
.ed textarea::selection { background: rgba(154,184,255,.3); }
.tk-c { color: #5f6f95; font-style: italic; }
.tk-m { color: #ff9ecf; font-weight: 700; }
.tk-j { color: #c8a2ff; font-weight: 700; }
.tk-n { color: var(--on); }
.tk-l { color: var(--mint); }
.tk-p { color: var(--bus); }
.tk-x { color: var(--err); text-decoration: underline wavy; }
.ln-pc { background: rgba(255,184,77,.12); box-shadow: inset 3px 0 var(--on); display: inline-block; width: 100%; }
.ln-err { background: rgba(255,93,108,.12); display: inline-block; width: 100%; }
.errbar { padding: 6px 12px; background: rgba(255,93,108,.12); color: #ffb3bb; font-size: 12.5px; border-top: 1px solid rgba(255,93,108,.35); }
.mside { overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 12px; background: var(--bg); }
.screen-wrap { background: #070a12; border: 1px solid var(--line2); border-radius: 12px; padding: 12px; display: grid; place-items: center; }
#scr { width: 100%; max-width: 320px; aspect-ratio: 1; image-rendering: pixelated; display: block; }
.regs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.regs div { background: var(--bg3); border: 1px solid var(--line); border-radius: 9px; padding: 5px 8px; }
.regs small { display: block; color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .08em; }
.regs b { font: 700 14px var(--mono); }
.cur-ins { font: 13px var(--mono); color: var(--on); background: var(--bg3); border: 1px solid var(--line); border-radius: 9px; padding: 6px 10px; }
.ramgrid { display: grid; grid-template-columns: 30px repeat(16, 1fr); font: 10.5px/1.7 var(--mono); background: var(--bg2); border: 1px solid var(--line); border-radius: 10px; padding: 6px; }
.ramgrid span { text-align: center; color: #3f4d70; border-radius: 3px; }
.ramgrid span.nz { color: #c3cde6; }
.ramgrid span.h { color: var(--dim); }
.ramgrid span.io { box-shadow: inset 0 -1px #4a3a7a; }
.ramgrid span.w { background: rgba(255,184,77,.35); color: #fff; }
.ramgrid span.ad { outline: 1px solid var(--bus); }
.outlog { font: 12px var(--mono); background: var(--bg2); border: 1px solid var(--line); border-radius: 9px; padding: 6px 10px; min-height: 32px; color: var(--bus); word-break: break-all; }
.pad { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.pad button { min-width: 38px; height: 32px; border-radius: 8px; background: var(--bg3); border: 1px solid var(--line2); font: 600 12px var(--mono); }
.pad button.down { background: var(--on); color: #261802; }
.sect { font-size: 11px; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); font-weight: 700; margin: 2px 0 -6px; }

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  #work { grid-template-columns: 148px 1fr 0; }
  #work.program { grid-template-columns: 0 1fr 0; }
  #panel { position: fixed; right: 0; top: 52px; bottom: 0; width: min(380px, 92vw); z-index: 30; transform: translateX(100%); transition: transform .25s; box-shadow: -10px 0 40px rgba(0,0,0,.4); overflow: visible; }
  #panel.open { transform: none; }
  #panelBody { height: 100%; overflow-y: auto; }
  #panelToggle { display: block; position: absolute; left: -76px; top: 12px; width: 70px; background: var(--on); color: #261802; border: 0; border-radius: 10px 0 0 10px; padding: 8px 0; font-weight: 800; box-shadow: -4px 4px 16px rgba(0,0,0,.3); }
  #panel.open #panelToggle { background: var(--bg3); color: var(--text); }
  .pitem { grid-template-columns: 40px 1fr; }
  .pitem canvas { width: 40px; height: 28px; }
  #machine { grid-template-columns: 1fr; grid-template-rows: 1fr auto; }
  .mside { max-height: 46vh; }
  #stats { top: auto; bottom: 62px; right: 10px; }
}
@media (max-width: 720px) {
  #work { grid-template-columns: 112px 1fr 0; }
  .pitem { grid-template-columns: 1fr; justify-items: center; text-align: center; }
  .pitem .ct { display: none; }
  .brand span, .crumbs .ch { display: none; }
  #btnSandbox { display: none; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }