:root{
    --night:#0d0b2c;
    --panel:#171447;
    --panel-2:#1f1b5e;
    --ink:#f4f1ff;
    --ink-dim:#9d97d6;
    --glow:#fde949;
    --glow-soft:#fdf099;
    --done:#62d8b6;
    --line:#2b2775;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html,body{
    height:100%;
    overflow:hidden;
    overscroll-behavior:none;
    background:var(--night);
    color:var(--ink);
    font-family:ui-rounded,'SF Pro Rounded',system-ui,-apple-system,'Segoe UI',sans-serif;
    -webkit-user-select:none;user-select:none;
    -webkit-tap-highlight-color:transparent;
  }
  #app{height:100%;display:flex;flex-direction:column}
  /* desktop app frame: cap width so the phone-first UI doesn't stretch edge-to-edge */
  @media (min-width:1000px){
    #app{max-width:960px;margin:0 auto;border-left:1px solid var(--line);border-right:1px solid var(--line)}
  }

  header{
    padding:10px 14px 6px;
    display:flex;align-items:baseline;gap:10px;
    flex:0 0 auto;
  }
  header h1{
    font-size:19px;font-weight:800;letter-spacing:.04em;
  }
  header h1 .spark{color:var(--glow)}
  header .hint{font-size:11px;color:var(--ink-dim);margin-left:auto;text-align:right}

  /* legend */
  #legend{
    flex:0 0 auto;
    display:flex;gap:6px;
    overflow-x:auto;overflow-y:hidden;
    padding:6px 14px 10px;
    scrollbar-width:none;
    /* edge-fade scroll affordance */
    mask-image:linear-gradient(90deg,transparent,#000 14px,#000 calc(100% - 28px),transparent);
    -webkit-mask-image:linear-gradient(90deg,transparent,#000 14px,#000 calc(100% - 28px),transparent);
  }
  #legend::-webkit-scrollbar{display:none}
  #legend{touch-action:pan-x;cursor:grab}
  #legend.dragging{cursor:grabbing}
  #legend.dragging .chip{pointer-events:none}
  .chip{
    flex:0 0 auto;
    display:flex;align-items:center;gap:7px;
    min-height:40px;
    background:var(--panel);
    border:1.5px solid var(--line);
    border-radius:999px;
    padding:8px 12px 8px 9px;
    font-size:12px;font-weight:600;
    color:var(--ink);
    cursor:pointer;
    transition:border-color .15s, background .15s, opacity .2s, transform .1s;
  }
  .chip:active{transform:scale(.96)}
  .chip .sw{
    width:20px;height:20px;border-radius:50%;
    border:2px solid rgba(255,255,255,.25);
    position:relative;flex:0 0 auto;
  }
  .chip .n{white-space:nowrap}
  .chip .cnt{color:var(--ink-dim);font-weight:500;font-size:11px;font-variant-numeric:tabular-nums}
  .chip.sel{
    border-color:var(--glow);background:var(--panel-2);
    box-shadow:0 0 0 2px var(--glow), 0 0 12px rgba(253,233,73,.35);
  }
  .chip.faded{opacity:.35}
  .chip.done .sw::after{
    content:'✓';position:absolute;inset:0;
    display:flex;align-items:center;justify-content:center;
    font-size:12px;font-weight:900;color:#08331f;
    background:var(--done);border-radius:50%;
  }
  .chip.done .n{text-decoration:line-through;color:var(--ink-dim)}

  /* canvas stage */
  #stage{
    flex:1 1 auto;position:relative;overflow:hidden;
    touch-action:none;
    background:
      radial-gradient(ellipse at 50% 40%, #191560 0%, var(--night) 70%);
  }
  #cv{position:absolute;inset:0;width:100%;height:100%;touch-action:none}
  #zoomHint{
    position:absolute;top:24px;left:50%;transform:translateX(-50%);
    font-size:11px;color:var(--ink-dim);
    background:rgba(13,11,44,.7);border-radius:999px;padding:4px 12px;
    pointer-events:none;transition:opacity .6s;
  }


  /* mini-map (4.5) - overlays the stage, top-right, touch target only on itself */
  #miniMap{
    position:absolute;top:24px;right:8px;left:auto;bottom:auto;
    width:84px;height:84px;
    background:rgba(23,20,71,.85);
    border:1.5px solid var(--line);
    border-radius:8px;
    touch-action:none;
  }

  /* block-complete celebration banner (4.6) */
  #blockCelebrate{
    position:absolute;left:50%;top:14px;transform:translateX(-50%) translateY(-140%);
    background:var(--done);color:#08331f;
    font-size:12px;font-weight:800;
    padding:8px 16px;border-radius:999px;
    opacity:0;pointer-events:none;
    transition:transform .35s cubic-bezier(.2,.8,.2,1), opacity .35s;
    white-space:nowrap;
  }
  #blockCelebrate.show{
    opacity:1;transform:translateX(-50%) translateY(0);
  }

  /* route summary readout (3.13) - slot for later 6.9 stats panel expansion */
  #routePanel{
    flex:0 0 auto;
    display:flex;align-items:center;gap:8px;
    padding:6px 14px;
    background:var(--panel);
    border-top:1px solid var(--line);
    font-size:11px;color:var(--ink-dim);
    overflow-x:auto;
    scrollbar-width:none;
    /* edge-fade scroll affordance */
    mask-image:linear-gradient(90deg,transparent,#000 14px,#000 calc(100% - 28px),transparent);
    -webkit-mask-image:linear-gradient(90deg,transparent,#000 14px,#000 calc(100% - 28px),transparent);
  }
  #routePanel::-webkit-scrollbar{display:none}
  #routePanel .rp-item{color:var(--ink);font-weight:700;white-space:nowrap;font-variant-numeric:tabular-nums}
  #routePanel .rp-item small{color:var(--ink-dim);font-weight:500;margin-left:2px}
  #routePanel .rp-item+.rp-item::before{content:'·';color:var(--ink-dim);margin-right:8px;font-weight:400}
  #posReadout{
    color:var(--ink);font-weight:600;white-space:nowrap;
    font-variant-numeric:tabular-nums;
  }
  #posReadout:empty{display:none}
  #routePanel .tbtn-readout{margin-left:auto}

  /* toolbar */
  #toolbar{
    flex:0 0 auto;
    display:flex;align-items:center;gap:8px;
    overflow-x:auto;overflow-y:hidden;
    padding:8px 14px;
    background:var(--panel);
    border-top:1px solid var(--line);
    scrollbar-width:none;
    /* edge-fade scroll affordance */
    mask-image:linear-gradient(90deg,transparent,#000 14px,#000 calc(100% - 28px),transparent);
    -webkit-mask-image:linear-gradient(90deg,transparent,#000 14px,#000 calc(100% - 28px),transparent);
  }
  #toolbar::-webkit-scrollbar{display:none}
  .tbtn{
    flex:0 0 auto;
    display:inline-flex;align-items:center;justify-content:center;gap:6px;
    min-height:40px;min-width:40px;
    background:var(--panel-2);
    border:1.5px solid var(--line);
    color:var(--ink);
    font-size:12px;font-weight:700;
    padding:8px 14px;
    border-radius:10px;
    cursor:pointer;
    transition:border-color .15s, background .15s, opacity .2s;
  }
  .tbtn svg{width:20px;height:20px;flex:0 0 auto}
  /* icon-only buttons: hide the word, keep a 40px square */
  #toolbar .tbtn .lbl,#routePanel .tbtn .lbl{display:none}
  #toolbar .tbtn,#routePanel .tbtn{padding:0;width:40px}
  #toolbar .tbtn.tbtn-text{width:auto;padding:0 10px;font-variant-numeric:tabular-nums;white-space:nowrap}
  .tbtn.on{border-color:var(--glow);background:rgba(253,233,73,.15);color:var(--glow)}
  .tbtn:disabled{opacity:.35;cursor:default}
  #flipBtn.on #viewLabel{color:var(--glow)}
  .tbtn-readout{
    flex:0 0 auto;
    font-size:12px;color:var(--ink-dim);font-weight:600;
    white-space:nowrap;
    font-variant-numeric:tabular-nums;
  }
  #blockLabel{min-width:20px;text-align:center;color:var(--ink)}
  #blockLabel:empty{display:none}

  /* footer progress */
  footer{
    flex:0 0 auto;
    padding:10px 14px calc(12px + env(safe-area-inset-bottom));
    background:var(--panel);
    border-top:1px solid var(--line);
  }
  .prog-row{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:6px}
  .prog-row .label{font-size:11px;letter-spacing:.08em;color:var(--ink-dim);font-weight:700;text-transform:uppercase}
  .prog-row .pct{font-size:16px;font-weight:800;color:var(--glow);font-variant-numeric:tabular-nums}
  .prog-row .pct small{font-size:11px;color:var(--ink-dim);font-weight:500;margin-left:6px}
  #bar{
    height:12px;border-radius:999px;background:var(--night);
    border:1px solid var(--line);overflow:hidden;
  }
  #barFill{
    height:100%;width:0%;
    background:linear-gradient(90deg,#62d8b6,#fde949);
    border-radius:999px;
    transition:width .5s cubic-bezier(.2,.8,.2,1);
    box-shadow:0 0 10px rgba(253,233,73,.5);
  }

  /* route details (6.5 anchors, 6.7 carry audit) - expandable strip under
     #routePanel, toggled by #routeDetailsBtn */
  #routeDetails{
    display:none;
    flex:0 0 auto;
    max-height:38vh;overflow-y:auto;
    padding:8px 14px;
    background:var(--panel);
    border-top:1px solid var(--line);
    font-size:12px;
  }
  #routeDetails.show{display:block}
  #routeDetails .rd-section{margin-bottom:10px}
  #routeDetails h3{font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-dim);margin-bottom:6px}
  #routeDetails ul{list-style:none}
  #routeDetails li{
    display:flex;justify-content:space-between;gap:8px;
    padding:6px 8px;border-radius:8px;margin-bottom:4px;
    background:var(--panel-2);
  }
  #routeDetails li.hop-flag{border:1px solid rgba(255,90,90,.6)}
  #routeDetails li button{
    background:none;border:1px solid var(--line);color:var(--glow);
    border-radius:6px;padding:6px 12px;font-size:11px;cursor:pointer;
  }
  #routeDetails .rd-empty{color:var(--ink-dim)}

  /* settings/stats sheets (6.2, 6.9) */
  .sheet-backdrop{
    display:none;
    position:fixed;inset:0;z-index:20;
    background:rgba(8,7,26,.6);
    align-items:flex-end;justify-content:center;
  }
  .sheet-backdrop.show{display:flex}
  .sheet{
    width:100%;max-width:520px;max-height:82vh;
    background:var(--panel);
    border-top:1.5px solid var(--line);
    border-radius:16px 16px 0 0;
    padding:14px 16px calc(14px + env(safe-area-inset-bottom));
    overflow-y:auto;
  }
  .sheet-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
  .sheet-head h2{font-size:17px;font-weight:800}
  .sheet-body{display:flex;flex-direction:column;gap:10px}
  .set-row{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    font-size:13px;font-weight:600;color:var(--ink);
  }
  .set-row input[type=number],.set-row select{
    background:var(--panel-2);border:1.5px solid var(--line);color:var(--ink);
    border-radius:8px;padding:6px 8px;font-size:13px;width:110px;
  }
  .set-row.set-check{justify-content:flex-start}
  .set-row.set-check input{width:auto;margin-right:8px;accent-color:var(--glow)}

  /* missed / omitted sheet */
  :root{--miss:#ff8a3d}
  .sheet-note{font-size:12px;line-height:1.5;color:var(--ink-dim)}
  .sheet-note b{color:var(--ink)}
  .range-in{display:flex;align-items:center;gap:6px}
  .range-in input[type=number]{width:72px}
  .range-sep{font-size:12px;color:var(--ink-dim);font-weight:500}
  #missedApplyBtn:not(:disabled){border-color:var(--miss);color:var(--miss)}
  #missedSummary:not(:empty){margin-top:2px}
  /* a colour with cells excised from the design */
  .chip.adjusted .cnt{color:var(--miss)}
  #missedBtn.on{color:var(--miss);border-color:var(--miss)}

  .stat-row{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px solid var(--line);font-size:13px}
  .stat-row small{color:var(--ink-dim);display:block;font-weight:500}
  .stat-group h3{font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-dim);margin:10px 0 4px}