/* ===================== Don't Quit — cartoon style ===================== */
:root{
  --cream:#F5EFE0;
  --cream-2:#EDE4D0;
  --ink:#2A1A0E;        /* outline / text */
  --ink-soft:#3a2818;

  --dirt-1:#A87B4A;     /* mid */
  --dirt-2:#8a5d31;     /* shadow */
  --dirt-3:#C99668;     /* highlight */
  --dirt-dark:#6B4423;  /* deep shadow / outline brown */

  /* Green gem palette (default) */
  --diamond-1:#C8E8B8;  /* pale lime */
  --diamond-2:#7DBE5A;  /* mid green */
  --diamond-3:#A8DC9A;  /* highlight */
  --diamond-4:#3F7A2E;  /* shadow */
  --diamond-shine:#FFFFFF;

  /* Rare purple gem palette */
  --purple-1:#E2C8F2;
  --purple-2:#A87FD4;
  --purple-3:#C8AEE6;
  --purple-4:#5B348C;

  --shirt:#F0EBE0;
  --pants:#3A3A3A;
  --pants-2:#5A5A5A;
  --skin:#F4C9A0;
  --skin-shadow:#d8a87a;
  --hair:#6B4423;

  --gold:#E8B62B;
  --shadow-card:0 6px 0 rgba(0,0,0,.15), 0 14px 30px rgba(0,0,0,.12);

  --font:'Inter', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --display:'Bungee', system-ui, sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:var(--font);color:var(--ink);
  background:var(--cream-2);
  min-height:100vh;
  overflow:hidden;
  -webkit-font-smoothing:antialiased;
}

/* ===================== Top bar ===================== */
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding:12px 22px;background:var(--cream);
  border-bottom:3px solid var(--ink);
  position:relative;z-index:10;
}
.brand{display:flex;align-items:center;gap:.55rem;font-family:var(--display);font-size:1.35rem;letter-spacing:.04em;color:var(--ink)}
.brand-ico{font-size:1.5rem}
.hud{display:flex;align-items:center;gap:.55rem}
.hud-pill{
  display:flex;flex-direction:column;align-items:center;
  background:#fff;border:2.5px solid var(--ink);
  border-radius:14px;padding:.35rem 1rem;min-width:84px;
  box-shadow:0 3px 0 var(--ink);
}
.hud-pill.best{background:#fff5d0;border-color:var(--ink)}
.hud-label{font-size:.62rem;text-transform:uppercase;letter-spacing:.14em;color:#7a6a4a;font-weight:700}
.hud-val{font-family:var(--display);font-size:1.15rem;color:var(--ink);letter-spacing:.02em}
.reset-btn{
  background:#fff;border:2.5px solid var(--ink);color:var(--ink);
  font-size:1.05rem;width:42px;height:42px;border-radius:12px;cursor:pointer;
  box-shadow:0 3px 0 var(--ink);transition:transform .12s;
}
.reset-btn:hover{transform:translateY(-1px) rotate(-25deg)}
.reset-btn:active{transform:translateY(2px);box-shadow:0 1px 0 var(--ink)}

/* ===================== Stage ===================== */
.stage{
  display:grid;grid-template-columns:1fr 360px;gap:0;
  height:calc(100vh - 72px);min-height:600px;
}

/* ===================== Game area ===================== */
.game{
  position:relative;overflow:hidden;cursor:pointer;
  background:linear-gradient(180deg, var(--cream) 0%, var(--cream-2) 100%);
  user-select:none;-webkit-user-select:none;
  outline:none;
}
.game:focus-visible{box-shadow:inset 0 0 0 3px rgba(123,168,188,.5)}

/* === Dirt overhang (top of the cave) === */
.overhang{
  position:absolute;top:0;left:0;right:0;height:90px;
  background:
    /* lumpy bottom edge */
    radial-gradient(circle at 8% 100%, var(--dirt-1) 0 22px, transparent 23px),
    radial-gradient(circle at 22% 100%, var(--dirt-1) 0 26px, transparent 27px),
    radial-gradient(circle at 38% 100%, var(--dirt-1) 0 20px, transparent 21px),
    radial-gradient(circle at 54% 100%, var(--dirt-1) 0 28px, transparent 29px),
    radial-gradient(circle at 70% 100%, var(--dirt-1) 0 22px, transparent 23px),
    radial-gradient(circle at 86% 100%, var(--dirt-1) 0 24px, transparent 25px),
    linear-gradient(180deg, var(--dirt-2) 0%, var(--dirt-1) 100%);
  border-bottom:3px solid var(--ink);
  pointer-events:none;
}
.overhang::before{
  /* pebble specks */
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 15% 35%, var(--dirt-dark) 0 3px, transparent 4px),
    radial-gradient(circle at 42% 28%, var(--dirt-dark) 0 4px, transparent 5px),
    radial-gradient(circle at 68% 42%, var(--dirt-dark) 0 3px, transparent 4px),
    radial-gradient(circle at 88% 30%, var(--dirt-dark) 0 4px, transparent 5px),
    radial-gradient(circle at 28% 55%, var(--dirt-3) 0 3px, transparent 4px),
    radial-gradient(circle at 58% 60%, var(--dirt-3) 0 3px, transparent 4px);
  opacity:.7;
}

/* === Ground (lumpy dirt floor) === */
.ground{
  position:absolute;left:0;right:0;bottom:0;height:140px;pointer-events:none;
  background:
    radial-gradient(circle at 6% 0%, var(--dirt-1) 0 28px, transparent 29px),
    radial-gradient(circle at 20% 0%, var(--dirt-1) 0 24px, transparent 25px),
    radial-gradient(circle at 34% 0%, var(--dirt-1) 0 32px, transparent 33px),
    radial-gradient(circle at 50% 0%, var(--dirt-1) 0 22px, transparent 23px),
    radial-gradient(circle at 64% 0%, var(--dirt-1) 0 30px, transparent 31px),
    radial-gradient(circle at 80% 0%, var(--dirt-1) 0 26px, transparent 27px),
    radial-gradient(circle at 94% 0%, var(--dirt-1) 0 28px, transparent 29px),
    linear-gradient(180deg, var(--dirt-1) 0%, var(--dirt-2) 100%);
  border-top:3px solid var(--ink);
}
.ground::after{
  content:"";position:absolute;inset:0;
  background:
    /* clump outlines */
    radial-gradient(circle at 18% 40%, var(--dirt-dark) 0 2px, transparent 3px),
    radial-gradient(circle at 38% 60%, var(--dirt-dark) 0 3px, transparent 4px),
    radial-gradient(circle at 62% 30%, var(--dirt-dark) 0 2px, transparent 3px),
    radial-gradient(circle at 78% 55%, var(--dirt-dark) 0 3px, transparent 4px),
    radial-gradient(circle at 92% 40%, var(--dirt-dark) 0 2px, transparent 3px);
  opacity:.7;
}
.ground::before{
  /* curved shadow lines defining the clumps */
  content:"";position:absolute;left:0;right:0;top:0;height:30px;
  background:
    radial-gradient(20px 14px at 12% 50%, var(--dirt-dark) 0%, transparent 70%),
    radial-gradient(24px 16px at 30% 60%, var(--dirt-dark) 0%, transparent 70%),
    radial-gradient(20px 14px at 48% 50%, var(--dirt-dark) 0%, transparent 70%),
    radial-gradient(22px 14px at 66% 60%, var(--dirt-dark) 0%, transparent 70%),
    radial-gradient(20px 12px at 84% 50%, var(--dirt-dark) 0%, transparent 70%);
  opacity:.35;
}

/* ===================== The diamond wall (right side) ===================== */
.wall{
  position:absolute;right:0;top:90px;bottom:140px;width:36%;
  overflow:hidden;
  border-left:3px solid var(--ink);
}

/* The actual gem grid behind the dirt cover */
.diamonds{
  position:absolute;inset:0;
  background:
    /* sparkles */
    radial-gradient(circle at 14% 12%, #fff 0 2px, transparent 3px),
    radial-gradient(circle at 78% 22%, #fff 0 2px, transparent 3px),
    radial-gradient(circle at 32% 48%, #fff 0 2px, transparent 3px),
    radial-gradient(circle at 88% 64%, #fff 0 2px, transparent 3px),
    radial-gradient(circle at 22% 82%, #fff 0 2px, transparent 3px),
    /* base */
    linear-gradient(180deg, var(--diamond-1) 0%, var(--diamond-2) 100%);
}
/* Tessellated diamond facet pattern (rhombus grid) */
.diamonds::before{
  content:"";position:absolute;inset:0;
  background:
    /* light facet diagonals */
    linear-gradient(45deg, transparent 47%, rgba(255,255,255,.55) 49%, rgba(255,255,255,.55) 51%, transparent 53%) 0 0/56px 56px,
    linear-gradient(-45deg, transparent 47%, rgba(74,112,128,.65) 49%, rgba(74,112,128,.65) 51%, transparent 53%) 0 0/56px 56px;
  mix-blend-mode:normal;
}
.diamonds::after{
  /* highlight dots inside each rhombus */
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 25% 25%, rgba(255,255,255,.65) 0 4px, transparent 5px) 0 0/56px 56px,
    radial-gradient(circle at 75% 75%, rgba(74,112,128,.45) 0 4px, transparent 5px) 0 0/56px 56px;
}

/* Purple gems layer — rare clickable hotspots */
.purple-gems{
  position:absolute;inset:0;pointer-events:none;z-index:2;
}
.purple-gem{
  position:absolute;width:42px;height:42px;pointer-events:auto;cursor:pointer;
  transform:translate(-50%,-50%) rotate(45deg);
  background:linear-gradient(135deg, var(--purple-1) 0%, var(--purple-2) 60%, var(--purple-4) 100%);
  border:2.5px solid var(--ink);border-radius:6px;
  box-shadow:
    inset -4px -4px 0 var(--purple-4),
    inset 4px 4px 0 var(--purple-3),
    0 0 24px rgba(168,127,212,.85),
    0 0 60px rgba(168,127,212,.35);
  animation:purplePulse 1.6s ease-in-out infinite, purpleSpawn .4s cubic-bezier(.3,1.4,.5,1.1);
  opacity:.96;
}
.purple-gem::before{
  content:"";position:absolute;left:14%;top:14%;width:32%;height:32%;
  background:rgba(255,255,255,.85);border-radius:3px;
  transform:rotate(-45deg);
}
@keyframes purplePulse{
  0%,100%{filter:brightness(1) drop-shadow(0 0 6px rgba(168,127,212,.6))}
  50%{filter:brightness(1.25) drop-shadow(0 0 14px rgba(168,127,212,1))}
}
@keyframes purpleSpawn{
  0%{transform:translate(-50%,-50%) rotate(45deg) scale(0)}
  100%{transform:translate(-50%,-50%) rotate(45deg) scale(1)}
}
.purple-gem.popping{animation:purplePop .35s ease-out forwards}
@keyframes purplePop{
  0%{transform:translate(-50%,-50%) rotate(45deg) scale(1);opacity:1}
  100%{transform:translate(-50%,-50%) rotate(135deg) scale(2);opacity:0}
}

/* Cracks SVG (drawn dynamically as you dig) */
.cracks{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.cracks path{stroke:var(--ink);stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}

/* Dirt cover — sits in front of the diamond wall and gets carved away */
.dirt-face{
  position:absolute;inset:0;
  background:
    /* clump highlights */
    radial-gradient(circle at 28% 22%, var(--dirt-3) 0 8px, transparent 10px),
    radial-gradient(circle at 64% 38%, var(--dirt-3) 0 7px, transparent 9px),
    radial-gradient(circle at 22% 66%, var(--dirt-3) 0 9px, transparent 11px),
    radial-gradient(circle at 78% 78%, var(--dirt-3) 0 7px, transparent 9px),
    radial-gradient(circle at 50% 50%, var(--dirt-3) 0 8px, transparent 10px),
    /* pebble shadows */
    radial-gradient(circle at 36% 30%, var(--dirt-dark) 0 3px, transparent 4px),
    radial-gradient(circle at 70% 18%, var(--dirt-dark) 0 3px, transparent 4px),
    radial-gradient(circle at 18% 50%, var(--dirt-dark) 0 4px, transparent 5px),
    radial-gradient(circle at 58% 70%, var(--dirt-dark) 0 3px, transparent 4px),
    radial-gradient(circle at 84% 50%, var(--dirt-dark) 0 4px, transparent 5px),
    radial-gradient(circle at 42% 88%, var(--dirt-dark) 0 3px, transparent 4px),
    /* base */
    linear-gradient(180deg, var(--dirt-1) 0%, var(--dirt-2) 100%);
  /* carved hole grows from the LEFT edge */
  clip-path: var(--dirt-clip, none);
  transition:clip-path .18s ease-out;
  border-left:6px solid var(--dirt-dark);
}

/* ===================== The miner ===================== */
.miner{
  position:absolute;bottom:120px;left:24%;width:240px;height:300px;
  transform-origin:center bottom;
  pointer-events:none;
}
.miner svg{
  /* bold cartoon outlines, no anti-alias smoothing on strokes */
  shape-rendering:geometricPrecision;
  display:block;
}
@media (max-width: 1100px){ .miner{left:14%} }

/* Pickaxe arm swing — pivots from shoulder */
.arm-pivot{transform-origin:148px 134px;transform:rotate(0deg)}
.miner.swinging .arm-pivot{ animation:swing 360ms cubic-bezier(.5,.1,.2,1.4); }
@keyframes swing{
  0%   {transform:rotate(0deg)}
  35%  {transform:rotate(-78deg)}   /* wind up high */
  60%  {transform:rotate(32deg)}    /* slam down */
  100% {transform:rotate(0deg)}
}

/* Body bounce on impact */
.miner.impact .body-group{animation:bodyShake .25s ease-out}
@keyframes bodyShake{
  0%{transform:translateX(0)}
  30%{transform:translateX(5px) translateY(-1px)}
  60%{transform:translateX(-2px)}
  100%{transform:translateX(0)}
}

/* Camera shake on big hits */
.game.shake .wall, .game.shake .miner, .game.shake .ground, .game.shake .overhang{
  animation:camShake .22s ease-out;
}
@keyframes camShake{
  0%,100%{transform:translate(0,0)}
  20%{transform:translate(-3px,1px)}
  40%{transform:translate(2px,-1px)}
  60%{transform:translate(-2px,1px)}
}

/* ===================== FX layer ===================== */
.fx-layer{position:absolute;inset:0;pointer-events:none;z-index:5}

.chunk{
  position:absolute;width:14px;height:14px;
  background:var(--dirt-1);
  border:2px solid var(--ink);
  box-shadow:inset -3px -3px 0 var(--dirt-2);
  border-radius:4px;
  animation:chunkFly 850ms cubic-bezier(.3,.6,.7,1) forwards;
}
.chunk.dark{background:var(--dirt-2);box-shadow:inset -3px -3px 0 var(--dirt-dark)}
.chunk.gem{
  background:var(--diamond-1);border:2px solid var(--ink);
  box-shadow:inset -3px -3px 0 var(--diamond-2), 0 0 8px rgba(125,190,90,.6);
  transform:rotate(45deg);
}
.chunk.purple{
  background:var(--purple-1);border:2px solid var(--ink);
  box-shadow:inset -3px -3px 0 var(--purple-2), 0 0 14px rgba(168,127,212,.9);
  transform:rotate(45deg);
}
@keyframes chunkFly{
  0%{opacity:1;transform:translate(0,0) rotate(0deg)}
  85%{opacity:1}
  100%{opacity:0;transform:translate(var(--dx,-200px), var(--dy,140px)) rotate(var(--rot,540deg))}
}
.chunk.gem{
  animation-name:chunkFlyGem;
}
@keyframes chunkFlyGem{
  0%{opacity:1;transform:translate(0,0) rotate(45deg)}
  85%{opacity:1}
  100%{opacity:0;transform:translate(var(--dx,-200px), var(--dy,140px)) rotate(calc(45deg + var(--rot,540deg)))}
}

.spark{
  position:absolute;width:40px;height:40px;border-radius:50%;
  background:radial-gradient(circle, rgba(255,245,200,.95) 0%, rgba(255,200,80,.55) 35%, transparent 70%);
  animation:sparkFade 400ms ease-out forwards;
  mix-blend-mode:multiply;
}
@keyframes sparkFade{
  0%{transform:scale(.3);opacity:.95}
  100%{transform:scale(1.7);opacity:0}
}

.popup{
  position:absolute;color:var(--ink);font-family:var(--display);font-size:1.1rem;
  -webkit-text-stroke:1px #fff;text-shadow:2px 2px 0 #fff, -1px -1px 0 #fff;
  pointer-events:none;
  animation:popupFly 950ms ease-out forwards;
}
.popup.crit{color:#c44;font-size:1.7rem;-webkit-text-stroke:1.5px #fff}
.popup.gem{color:var(--diamond-4);font-size:1.3rem}
.popup.purple{color:var(--purple-4);font-size:1.7rem;-webkit-text-stroke:1.5px #fff}
@keyframes popupFly{
  0%{opacity:0;transform:translateY(0) scale(.7)}
  20%{opacity:1;transform:translateY(-12px) scale(1.15)}
  100%{opacity:0;transform:translateY(-70px) scale(1)}
}

/* Hint message */
.hint{
  position:absolute;left:50%;top:18%;transform:translateX(-50%);
  background:#fff;color:var(--ink);padding:.6rem 1.1rem;border-radius:999px;
  font-size:.95rem;font-weight:700;letter-spacing:.02em;
  border:2.5px solid var(--ink);box-shadow:0 4px 0 var(--ink);
  animation:hintBob 2s ease-in-out infinite;
  transition:opacity .4s;
}
.hint.gone{opacity:0;pointer-events:none}
@keyframes hintBob{
  0%,100%{transform:translate(-50%,0)}
  50%{transform:translate(-50%,-8px)}
}

/* ===================== Side panel ===================== */
.side{
  background:var(--cream);
  border-left:3px solid var(--ink);
  padding:20px;overflow-y:auto;
}
.card h2{
  font-family:var(--display);font-size:1.55rem;color:var(--ink);
  margin-bottom:.5rem;line-height:1.1;
}
.card p{color:var(--ink-soft);font-size:.95rem;line-height:1.5;margin-bottom:1rem}
.card em{color:var(--diamond-4);font-style:normal;font-weight:700}
kbd{
  display:inline-block;background:#fff;padding:.1rem .5rem;border-radius:6px;
  border:2px solid var(--ink);font-family:inherit;font-size:.85rem;font-weight:700;
  color:var(--ink);box-shadow:0 2px 0 var(--ink);
}

.progress-wrap{margin:1.3rem 0 1.2rem}
.progress-label{display:flex;justify-content:space-between;font-size:.78rem;color:var(--ink-soft);margin-bottom:.35rem;text-transform:uppercase;letter-spacing:.12em;font-weight:700}
.progress-bar{
  height:22px;background:#fff;border:2.5px solid var(--ink);
  border-radius:999px;overflow:hidden;position:relative;
  box-shadow:0 3px 0 var(--ink);
}
.progress-fill{
  height:100%;width:0%;
  background:linear-gradient(180deg, #ffd86b, var(--gold) 100%);
  transition:width .25s ease-out;
  position:relative;
}
.progress-fill::after{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(45deg, rgba(255,255,255,.35) 0 8px, transparent 8px 16px);
  animation:stripeShift 1.2s linear infinite;
}
@keyframes stripeShift{ to { background-position:32px 0 } }

/* Upgrades */
.upgrades h3{
  font-family:var(--display);font-size:1.05rem;color:var(--ink);margin:1rem 0 .55rem;
  letter-spacing:.04em;
}
.upgrade{
  display:grid;grid-template-columns:1fr auto;gap:.2rem .8rem;
  width:100%;text-align:left;background:#fff;
  border:2.5px solid var(--ink);border-radius:14px;
  padding:.7rem .95rem;margin-bottom:.6rem;color:var(--ink);cursor:pointer;
  font:inherit;box-shadow:0 3px 0 var(--ink);
  transition:transform .12s, background .12s, box-shadow .12s;
}
.upgrade:hover:not(:disabled){background:#fff8df;transform:translateY(-2px);box-shadow:0 5px 0 var(--ink)}
.upgrade:active:not(:disabled){transform:translateY(2px);box-shadow:0 1px 0 var(--ink)}
.upgrade:disabled{opacity:.5;cursor:not-allowed;background:#f0e9d6}
.up-name{font-weight:800;font-size:.96rem;grid-column:1}
.up-cost{grid-row:1/3;grid-column:2;align-self:center;font-weight:800;font-size:1.05rem;color:var(--diamond-4)}
.up-stat{grid-column:1;font-size:.78rem;color:var(--ink-soft);font-weight:500}
.upgrade b{color:var(--ink)}

.muted{color:var(--ink-soft)}
.small{font-size:.82rem}

/* ===================== $QUIT buyback panel ===================== */
.quit-card{
  margin-top:1.4rem;
  background:linear-gradient(180deg, #fff 0%, #f5e9fc 100%);
  border:3px solid var(--ink);border-radius:18px;padding:1rem 1.1rem 1.1rem;
  box-shadow:0 5px 0 var(--ink);position:relative;overflow:hidden;
}
.quit-card::before{
  content:"";position:absolute;top:-30px;right:-30px;width:120px;height:120px;
  background:radial-gradient(circle, rgba(168,127,212,.3), transparent 70%);pointer-events:none;
}
.quit-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:.4rem}
.quit-badge{
  display:inline-block;background:var(--purple-2);color:#fff;
  font-family:var(--display);font-size:.85rem;letter-spacing:.04em;
  padding:.2rem .65rem;border-radius:999px;border:2px solid var(--ink);
  box-shadow:0 2px 0 var(--ink);
}
.quit-rate{font-size:.82rem;color:var(--ink-soft);font-weight:600}
.quit-title{
  font-family:var(--display);font-size:1.05rem;color:var(--purple-4);margin:.3rem 0 .35rem;letter-spacing:.02em;
}
.quit-blurb{font-size:.88rem;color:var(--ink-soft);margin:0 0 .8rem;line-height:1.45}
.purple-text{color:var(--purple-4);font-weight:800}
.quit-stats{display:grid;grid-template-columns:1fr 1fr;gap:.5rem;margin-bottom:.7rem}
.quit-stats > div{
  background:#fff;border:2px solid var(--ink);border-radius:10px;
  padding:.4rem .6rem;box-shadow:0 2px 0 var(--ink);
}
.qs-label{display:block;font-size:.62rem;color:#7a6a4a;text-transform:uppercase;letter-spacing:.12em;font-weight:700}
.qs-val{display:block;font-family:var(--display);color:var(--ink);font-size:1.1rem;letter-spacing:.02em}
.quit-mint{font-size:.78rem;color:var(--ink-soft);margin:0 0 .5rem;display:flex;justify-content:space-between;align-items:center}
.quit-mint a{color:var(--purple-4);font-family:ui-monospace, SFMono-Regular, Menlo, monospace;font-weight:600}
.quit-mint a:hover{text-decoration:underline}
.buyback-feed{font-size:.78rem;color:var(--ink-soft);max-height:90px;overflow-y:auto;display:grid;gap:.25rem}
.buyback-feed .bb-row{display:flex;justify-content:space-between;background:#fff;border:1.5px solid var(--ink);border-radius:8px;padding:.25rem .55rem}
.buyback-feed .bb-row a{color:var(--purple-4);font-family:ui-monospace, monospace;font-size:.74rem}
.buyback-feed .empty{color:var(--ink-soft);font-style:italic;text-align:center;padding:.4rem}

/* ===================== Purple gem celebration overlay ===================== */
.purple-overlay{
  position:fixed;inset:0;z-index:35;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(ellipse at center, rgba(168,127,212,.65), rgba(42,26,14,.65));
  backdrop-filter:blur(4px);animation:fadeIn .25s ease-out;
}
.purple-overlay[hidden]{display:none}
.po-card{
  background:var(--cream);border:3px solid var(--ink);border-radius:24px;padding:2rem 2.4rem;text-align:center;
  box-shadow:0 8px 0 var(--ink), 0 0 100px rgba(168,127,212,.7);
  animation:btPop .35s cubic-bezier(.3,1.4,.5,1.1);position:relative;overflow:hidden;
  max-width:440px;
}
.po-burst{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at 20% 30%, rgba(168,127,212,.4) 0 6px, transparent 10px),
    radial-gradient(circle at 80% 20%, rgba(168,127,212,.5) 0 8px, transparent 12px),
    radial-gradient(circle at 30% 80%, rgba(168,127,212,.4) 0 7px, transparent 10px),
    radial-gradient(circle at 75% 75%, rgba(168,127,212,.5) 0 9px, transparent 14px);
  animation:burstSpin 8s linear infinite;
}
@keyframes burstSpin{to{transform:rotate(360deg)}}
.po-card h2{font-family:var(--display);color:var(--purple-4);font-size:2rem;margin-bottom:.6rem;position:relative}
.po-line{color:var(--ink-soft);margin-bottom:.6rem;font-size:1.05rem;position:relative}
.po-line b{color:var(--ink)}
.po-quote{font-family:var(--display);color:var(--purple-4);font-size:1.2rem;margin:.4rem 0;position:relative}
.po-status{font-size:.92rem;color:var(--ink-soft);margin-bottom:.6rem;position:relative}
.po-status.success{color:var(--diamond-4)}
.po-status.error{color:#a52525}

/* ===================== Breakthrough overlay ===================== */
.breakthrough{
  position:fixed;inset:0;z-index:30;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(ellipse at center, rgba(184,220,232,.55), rgba(42,26,14,.55));
  backdrop-filter:blur(3px);
  animation:fadeIn .25s ease-out;
}
.breakthrough[hidden]{display:none}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.bt-card{
  background:var(--cream);
  border:3px solid var(--ink);border-radius:24px;padding:2rem 2.4rem;text-align:center;
  box-shadow:0 8px 0 var(--ink), 0 0 80px rgba(184,220,232,.6);
  animation:btPop .35s cubic-bezier(.3,1.4,.5,1.1);
}
@keyframes btPop{from{transform:scale(.7);opacity:0}to{transform:scale(1);opacity:1}}
.bt-card h2{font-family:var(--display);color:var(--ink);font-size:2.2rem;margin-bottom:.6rem}
.bt-card p{color:var(--ink-soft);margin-bottom:.4rem;font-size:1.1rem}
#bt-reward{font-family:var(--display);color:var(--diamond-4);font-size:1.5rem}
.btn{
  margin-top:1.2rem;background:var(--diamond-2);color:#fff;font-weight:700;
  padding:.75rem 1.7rem;border-radius:999px;border:2.5px solid var(--ink);cursor:pointer;font:inherit;
  font-weight:800;font-size:1rem;letter-spacing:.02em;
  box-shadow:0 5px 0 var(--ink);
  transition:transform .12s, box-shadow .12s;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 7px 0 var(--ink)}
.btn:active{transform:translateY(2px);box-shadow:0 2px 0 var(--ink)}

/* ===================== Responsive ===================== */
@media (max-width: 900px){
  .stage{grid-template-columns:1fr;height:auto;min-height:100vh}
  .game{min-height:60vh}
  .miner{transform:scale(.82);bottom:120px}
}
@media (max-width: 560px){
  .topbar{padding:10px 14px}
  .brand-name{display:none}
  .hud-pill{min-width:60px;padding:.3rem .7rem}
  .hud-val{font-size:1rem}
  .wall{width:46%}
  .miner{transform:scale(.66);left:6%;bottom:100px}
}