:root{
  --bg0: #070a12;
  --bg1: #0b1020;
  --card: rgba(255,255,255,.06);
  --card2: rgba(255,255,255,.08);
  --stroke: rgba(255,255,255,.14);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.68);
  --shadow: 0 18px 60px rgba(0,0,0,.55);
  --radius: 22px;
  --radius2: 16px;
  --ring: 0 0 0 3px rgba(120, 168, 255, .35);
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body{
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(1200px 700px at 20% 15%, rgba(105, 154, 255, .20), transparent 55%),
    radial-gradient(900px 600px at 85% 30%, rgba(189, 92, 255, .18), transparent 55%),
    radial-gradient(800px 800px at 50% 110%, rgba(0, 255, 194, .10), transparent 60%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
  font: 16px/1.5 ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  display: grid;
  place-items: center;
  padding: max(18px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) max(18px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
}

.wrap{
  width: min(720px, 100%);
}

.card{
  background: linear-gradient(180deg, var(--card), rgba(255,255,255,.03));
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: clamp(18px, 3.2vw, 28px);
}

.header{
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 18px;
}

.badge{
  min-width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-weight: 700;
  letter-spacing: .02em;
  background: linear-gradient(135deg, rgba(120,168,255,.25), rgba(189,92,255,.18));
  border: 1px solid rgba(255,255,255,.18);
}

h1{
  margin: 0;
  font-size: clamp(20px, 3.2vw, 28px);
  letter-spacing: -0.02em;
}

.sub{
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 14px;
}

kbd{
  font: 12px ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  padding: 2px 7px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(0,0,0,.25);
}

.stage{
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(14px, 2.6vw, 22px);
  align-items: center;
  padding: 14px;
  border-radius: var(--radius2);
  border: 1px solid rgba(255,255,255,.10);
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
}

.diceFrame{
  position: relative;
  width: 220px;
  height: 220px;
  display: grid;
  place-items: center;
}

.dice{
  width: 180px;
  height: 180px;
  filter: drop-shadow(0 16px 30px rgba(0,0,0,.55));
  transform: translateZ(0);
}

.glow{
  position: absolute;
  inset: 16px;
  border-radius: 28px;
  background: radial-gradient(circle at 30% 30%, rgba(120,168,255,.25), transparent 55%),
              radial-gradient(circle at 70% 70%, rgba(189,92,255,.22), transparent 60%);
  filter: blur(16px);
  opacity: .75;
  pointer-events: none;
}

.readout{
  display: grid;
  gap: 6px;
  align-content: center;
}

.label{
  color: var(--muted);
  font-size: 13px;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.result{
  font-size: clamp(44px, 6vw, 68px);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.status{
  min-height: 20px;
  color: rgba(255,255,255,.78);
  font-size: 14px;
}

.actions{
  display: flex;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.btn{
  appearance: none;
  border: 1px solid rgba(255,255,255,.16);
  background: linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,.05));
  color: var(--text);
  border-radius: 14px;
  padding: 12px 14px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: .01em;
  cursor: pointer;
  transition: transform .12s ease, border-color .12s ease, background .12s ease, opacity .12s ease;
  user-select: none;
}

.btn.secondary{
  background: linear-gradient(180deg, rgba(0,0,0,.20), rgba(255,255,255,.04));
}

.btn:hover{
  border-color: rgba(255,255,255,.26);
  transform: translateY(-1px);
}

.btn:active{
  transform: translateY(0px) scale(.99);
}

.btn:focus-visible{
  outline: none;
  box-shadow: var(--ring);
}

.btn:disabled{
  opacity: .55;
  cursor: not-allowed;
  transform: none;
}

.btnIcon{
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
}

.history{
  margin-top: 16px;
  border-top: 1px solid rgba(255,255,255,.10);
  padding-top: 14px;
}

.history summary{
  cursor: pointer;
  color: var(--muted);
  font-weight: 700;
  user-select: none;
}

.historyList{
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.historyList li{
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.18);
}

.hNum{
  font-weight: 800;
  font-size: 16px;
}

.hTime{
  color: var(--muted);
  font: 12px ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

.footer{
  margin-top: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
}

.link{
  color: rgba(190, 214, 255, .92);
  text-decoration: none;
  border-bottom: 1px dashed rgba(190, 214, 255, .35);
}
.link:hover{ border-bottom-style: solid; }

.dot{ opacity: .55; }

@media (max-width: 620px){
  .stage{
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }
  .diceFrame{ width: 100%; height: 220px; }
  .readout{ justify-items: center; }
  .actions{ justify-content: center; }
}

/* Roll animation */
@keyframes rollSpin {
  0%   { transform: rotate(0deg) scale(1); }
  30%  { transform: rotate(120deg) scale(.95); }
  60%  { transform: rotate(260deg) scale(1.02); }
  100% { transform: rotate(360deg) scale(1); }
}

.dice.rolling{
  animation: rollSpin .52s cubic-bezier(.2,.8,.2,1) both;
}

@media (prefers-reduced-motion: reduce){
  .btn{ transition: none; }
  .dice.rolling{ animation: none; }
}