/* ============================================================
   DICE — 3D roller scene
   ============================================================ */
.dice-stage {
  position: relative;
  height: 230px;
  display: grid; place-items: center;
  perspective: 900px;
  margin-bottom: 6px;
  background:
    radial-gradient(ellipse 60% 50% at 50% 60%, rgba(0,229,204,0.10), transparent 70%);
  border-radius: var(--radius);
  overflow: hidden;
}
.dice-stage::after { /* floor shadow */
  content: ''; position: absolute; bottom: 38px; left: 50%; transform: translateX(-50%);
  width: 110px; height: 22px; border-radius: 50%;
  background: radial-gradient(ellipse, rgba(0,0,0,0.55), transparent 70%);
  filter: blur(3px); transition: transform .3s var(--ease), opacity .3s;
}
.dice-stage.rolling::after { transform: translateX(-50%) scale(1.25); opacity: .5; }
#diceCanvas { width: 100%; height: 100%; display: block; }
.spark { position: absolute; left: 50%; top: 46%; width: 4px; height: 4px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); pointer-events: none; z-index: 3; animation: spark .68s cubic-bezier(0.22,1,0.36,1) forwards; }
@keyframes spark { 0% { opacity: 1; transform: translate(-50%, -50%) scale(1.2); } 100% { opacity: 0; transform: translate(-50%, -50%) translate(var(--tx), var(--ty)) scale(.2); } }

.die3d {
  width: 84px; height: 84px; position: relative;
  transform-style: preserve-3d;
  transform: rotateX(-22deg) rotateY(20deg);
  will-change: transform;
}
.die3d.rolling { transition: transform 1.15s cubic-bezier(0.18, 0.8, 0.24, 1); }
.die3d .face {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  border: 1.5px solid var(--cyan);
  background: linear-gradient(150deg, rgba(16,16,28,0.92), rgba(10,20,26,0.92));
  box-shadow: inset 0 0 22px rgba(0,229,204,0.28), 0 0 16px rgba(0,229,204,0.20);
  border-radius: 12px;
  font-family: var(--f-display); font-weight: 900; color: var(--cyan);
  font-size: 1.5rem; text-shadow: 0 0 12px var(--cyan-glow);
  backface-visibility: visible;
}
.die3d .f1 { transform: rotateY(0deg)   translateZ(42px); }
.die3d .f2 { transform: rotateY(90deg)  translateZ(42px); }
.die3d .f3 { transform: rotateY(180deg) translateZ(42px); }
.die3d .f4 { transform: rotateY(-90deg) translateZ(42px); }
.die3d .f5 { transform: rotateX(90deg)  translateZ(42px); }
.die3d .f6 { transform: rotateX(-90deg) translateZ(42px); }

/* Result overlay */
.dice-result {
  position: absolute; inset: 0; display: grid; place-items: center;
  pointer-events: none; opacity: 0; transition: opacity .25s var(--ease);
}
.dice-result.show { opacity: 1; }
.dice-result .total {
  font-family: var(--f-display); font-weight: 900; font-size: 4.6rem; line-height: 1;
  color: #fff; text-shadow: 0 0 26px var(--cyan-glow), 0 0 54px rgba(0,229,204,0.5);
}
.dice-result.crit .total { color: var(--cyan); animation: critPulse .5s var(--ease); }
.dice-result.fail .total { color: var(--red); text-shadow: 0 0 26px rgba(220,38,38,0.6); }
@keyframes critPulse { 0%{transform:scale(.6);opacity:0} 60%{transform:scale(1.18)} 100%{transform:scale(1)} }

.dice-breakdown { text-align: center; font-family: var(--f-mono); font-size: .82rem; color: var(--grey); min-height: 20px; margin: 2px 0 12px; }
.dice-breakdown b { color: var(--cyan); }

/* Controls */
.dice-types { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 12px; }
.dice-types button {
  padding: 13px 4px; border-radius: var(--radius-sm); background: var(--bg-card);
  border: 1px solid var(--line-soft); font-family: var(--f-display); font-weight: 700;
  font-size: 1rem; color: var(--white); transition: all .15s var(--ease);
}
.dice-types button.sel { background: var(--cyan-dim); border-color: var(--cyan); color: var(--cyan); box-shadow: 0 0 14px rgba(0,229,204,0.22); }
.dice-types button:active { transform: scale(.93); }

.stepper { display: flex; align-items: center; gap: 0; background: var(--bg-input); border: 1px solid var(--line-soft); border-radius: var(--radius-sm); overflow: hidden; }
.stepper button { width: 42px; height: 44px; font-size: 1.4rem; color: var(--cyan); display: grid; place-items: center; }
.stepper button:active { background: var(--cyan-dim); }
.stepper .val { flex: 1; text-align: center; font-family: var(--f-mono); font-weight: 700; font-size: 1.05rem; }

.adv-toggle { display: grid; grid-template-columns: repeat(3,1fr); gap: 6px; }
.adv-toggle button { padding: 10px 4px; border-radius: var(--radius-sm); background: var(--bg-card); border: 1px solid var(--line-soft); font-family: var(--f-head); font-weight: 600; font-size: .76rem; text-transform: uppercase; letter-spacing: .04em; color: var(--grey); }
.adv-toggle button.sel { color: var(--white); }
.adv-toggle button[data-adv="adv"].sel { background: rgba(22,163,74,0.18); border-color: var(--green); color: #4ade80; }
.adv-toggle button[data-adv="dis"].sel { background: var(--red-dim); border-color: var(--red); color: #ff7a7a; }
.adv-toggle button[data-adv="normal"].sel { background: var(--cyan-dim); border-color: var(--cyan); color: var(--cyan); }

.dice-history { margin-top: 4px; }
.dice-history .row-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 9px 12px; border-bottom: 1px solid var(--line-soft); font-family: var(--f-mono); font-size: .82rem;
}
.dice-history .row-item .expr { color: var(--grey); }
.dice-history .row-item .res { color: var(--cyan); font-weight: 700; }