/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  min-height: 100vh;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: #111;
  color: #eee;
}
#stage { min-height: 100vh; }

/* ---------- roll button ---------- */
#roll {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 10000;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 2px solid #000;
  border-radius: 999px;
  background: #ffe14d;
  color: #000;
  font: 700 16px/1 system-ui, sans-serif;
  box-shadow: 3px 3px 0 #000;
  cursor: pointer;
}
#roll:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 #000; }
#roll:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 #000; }
#roll:focus-visible { outline: 3px solid #4da3ff; outline-offset: 3px; }
#roll .die { font-size: 22px; display: inline-block; }
#roll.rolling .die { animation: roll-spin .6s ease-out; }
#roll .roll-result:empty { display: none; }
#roll .roll-result {
  min-width: 1.6em;
  padding: 2px 6px;
  border-radius: 6px;
  background: #000;
  color: #ffe14d;
  text-align: center;
}
@keyframes roll-spin {
  from { transform: rotate(0) scale(1); }
  50%  { transform: rotate(360deg) scale(1.4); }
  to   { transform: rotate(720deg) scale(1); }
}

/* ---------- theme name toast ---------- */
#theme-toast {
  position: fixed;
  left: 50%;
  bottom: 80px;
  z-index: 10000;
  transform: translateX(-50%);
  padding: 8px 14px;
  border-radius: 8px;
  background: rgba(0, 0, 0, .85);
  color: #fff;
  font: 600 14px/1.2 system-ui, sans-serif;
  pointer-events: none;
  transition: opacity .4s;
}
#theme-toast.hide { opacity: 0; }

/* ---------- loading / error ---------- */
.shell-msg {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 24px;
  text-align: center;
}
.shell-msg a { color: #ffe14d; }

@media (prefers-reduced-motion: reduce) {
  #roll.rolling .die { animation: none; }
}