:root {
  --bg: #07070d;
  --bg-glow: #1b1640;
  --ink: #ece9f7;
  --muted: #9d99b6;
  --accent: #4d5bf0;
  --accent-hover: #5f6cff;
  --warn-ink: #ffd6cc;
  --warn-bg: rgba(255, 120, 90, 0.08);
  --warn-line: rgba(255, 140, 110, 0.28);
  --support-bg: rgba(120, 140, 255, 0.08);
  --support-line: rgba(140, 155, 255, 0.3);

  /* Everything on the ball scales from its diameter. */
  --ball: min(400px, calc(100vw - 48px), 56svh);
  --window: calc(var(--ball) * 0.5);
  --edge: calc(var(--window) * 0.66);
  --inradius: calc(var(--edge) * 0.7557613); /* icosahedron: face centre to die centre */

  --die-font: "Futura", "Futura PT", "Century Gothic", "Avenir Next", "Trebuchet MS", sans-serif;
  --ui-font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
}

body {
  min-height: 100svh;
  background:
    radial-gradient(ellipse 90% 60% at 50% 32%, var(--bg-glow) 0%, #0c0a1f 45%, var(--bg) 80%) fixed,
    var(--bg);
  color: var(--ink);
  font: 16px/1.5 var(--ui-font);
  -webkit-font-smoothing: antialiased;
}

a {
  color: #aab4ff;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.page {
  max-width: 560px;
  min-height: 100svh;
  margin: 0 auto;
  padding: 32px 16px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.modes {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
}

.modes a {
  padding: 6px 14px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  border-radius: 999px;
}

.modes a:hover {
  color: var(--ink);
}

.modes a[aria-current="page"] {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.1);
}

.modes a:focus-visible {
  outline: 2px solid var(--accent-hover);
  outline-offset: 2px;
}

.masthead {
  text-align: center;
}

.masthead h1 {
  margin: 0;
  font: 700 clamp(1.15rem, 3.2vw, 1.45rem) / 1.2 var(--die-font);
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.masthead .not-so {
  color: var(--muted);
}

.masthead p {
  max-width: 34em;
  margin: 6px auto 0;
  color: var(--muted);
}

/* ---------------------------------------------------------------- ball -- */

.ball-area {
  position: relative;
  width: var(--ball);
  aspect-ratio: 1;
  margin: 4px 0 16px;
}

.ball-shadow {
  position: absolute;
  left: 14%;
  right: 14%;
  bottom: -8%;
  height: 12%;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(0, 0, 0, 0.75), transparent);
  filter: blur(6px);
}

.ball-wrap {
  position: absolute;
  inset: 0;
  cursor: pointer;
}

.ball {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  overflow: hidden;
  background: radial-gradient(circle at 42% 36%, #34343f 0%, #17171d 38%, #060608 68%, #000 100%);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.04),
    0 0 80px rgba(111, 124, 255, 0.14);
}

.ball-surface {
  position: absolute;
  inset: 0;
}

/* Specular highlight and rim light. Sits above the ball and doesn't rotate,
   because the light source doesn't move when the ball twists. */
.ball-gloss {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  pointer-events: none;
  background:
    radial-gradient(ellipse 13% 7% at 33% 17%, rgba(255, 255, 255, 0.55), transparent 100%),
    radial-gradient(ellipse 34% 22% at 36% 22%, rgba(255, 255, 255, 0.14), transparent 100%),
    radial-gradient(circle at 50% 50%, transparent 62%, rgba(150, 160, 255, 0.07) 70%, transparent 71%);
  box-shadow: inset calc(var(--ball) * -0.04) calc(var(--ball) * -0.06) calc(var(--ball) * 0.12) rgba(0, 0, 0, 0.8);
}

.eight,
.window {
  position: absolute;
  left: 50%;
  top: 50%;
  translate: -50% -50%;
  border-radius: 50%;
}

.eight {
  width: calc(var(--ball) * 0.46);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 40% 34%, #fff 0%, #f0f0f4 48%, #c9c9d3 100%);
  box-shadow: inset 0 calc(var(--ball) * -0.012) calc(var(--ball) * 0.03) rgba(0, 0, 0, 0.3);
}

.eight span {
  font: 700 calc(var(--ball) * 0.3) / 1 var(--die-font);
  color: #0b0b10;
  translate: 0 3%;
}

.window {
  width: var(--window);
  aspect-ratio: 1;
  background: #02040c;
  box-shadow:
    0 0 0 calc(var(--ball) * 0.012) #09090d,
    0 0 0 calc(var(--ball) * 0.022) #24242d,
    0 0 calc(var(--ball) * 0.04) calc(var(--ball) * 0.02) rgba(0, 0, 0, 0.8);
  /* Starts on the underside of the ball; the flip rolls it into view. */
  transform: translateY(calc(var(--ball) * 0.5)) scaleY(0);
  opacity: 0;
}

.liquid {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  overflow: hidden;
  background: radial-gradient(circle at 50% 42%, #10256a 0%, #0a1845 30%, #050c26 60%, #01030b 100%);
}

/* Murky edges: the die fades into dark liquid away from the glass. */
.liquid::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(circle at 50% 46%, transparent 36%, rgba(1, 3, 12, 0.7) 56%, rgba(0, 0, 6, 0.97) 76%);
  box-shadow: inset 0 0 calc(var(--window) * 0.08) #000;
}

/* Rolling the ball over: a disc on a sphere rotating by θ moves by R·sinθ
   and flattens by cosθ. Keyframes sample θ = 0°, 30°, 60°, 90°. */
.ball[data-side="window"] .eight {
  animation: roll-away 750ms cubic-bezier(0.45, 0, 0.55, 1) forwards;
}

.ball[data-side="window"] .window {
  animation: roll-in 750ms cubic-bezier(0.45, 0, 0.55, 1) forwards;
}

@keyframes roll-away {
  0% { transform: none; opacity: 1; }
  33% { transform: translateY(calc(var(--ball) * -0.25)) scaleY(0.866); }
  66% { transform: translateY(calc(var(--ball) * -0.433)) scaleY(0.5); opacity: 0.7; }
  100% { transform: translateY(calc(var(--ball) * -0.5)) scaleY(0); opacity: 0; }
}

@keyframes roll-in {
  0% { transform: translateY(calc(var(--ball) * 0.5)) scaleY(0); opacity: 0; }
  33% { transform: translateY(calc(var(--ball) * 0.433)) scaleY(0.5); opacity: 0.7; }
  66% { transform: translateY(calc(var(--ball) * 0.25)) scaleY(0.866); opacity: 1; }
  100% { transform: none; opacity: 1; }
}

.ball-wrap.shaking {
  animation: shake 900ms cubic-bezier(0.36, 0.07, 0.19, 0.97);
}

.ball-wrap.shaking .ball-surface {
  animation: twist 900ms cubic-bezier(0.36, 0.07, 0.19, 0.97);
}

@keyframes shake {
  0%, 100% { translate: 0 0; }
  10% { translate: -3% -1.5%; }
  25% { translate: 4% 1%; }
  40% { translate: -4% -0.5%; }
  55% { translate: 3% 1%; }
  70% { translate: -2% 0; }
  85% { translate: 1% 0; }
}

@keyframes twist {
  0%, 100% { rotate: 0deg; }
  10% { rotate: -7deg; }
  25% { rotate: 8deg; }
  40% { rotate: -6deg; }
  55% { rotate: 4deg; }
  70% { rotate: -2deg; }
  85% { rotate: 1deg; }
}

/* ----------------------------------------------------------------- die -- */

.die-depth {
  position: absolute;
  inset: 0;
}

.die-depth.settled {
  animation: bob 5s ease-in-out infinite;
}

@keyframes bob {
  0%, 100% { translate: 0 0; rotate: 0deg; }
  50% { translate: 0 -1.2%; rotate: 1deg; }
}

.die-stage {
  position: absolute;
  inset: 0;
  perspective: calc(var(--edge) * 6);
}

.die {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 0;
  height: 0;
  transform-style: preserve-3d;
}

/* An equilateral triangle whose centroid sits on the die's centre before
   its matrix3d() moves it into place. */
.face {
  position: absolute;
  width: var(--edge);
  height: calc(var(--edge) * 0.8660254);
  left: calc(var(--edge) * -0.5);
  top: calc(var(--edge) * -0.5773503);
  transform-origin: 50% 66.66667%;
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
  backface-visibility: hidden;
  background: linear-gradient(180deg, #3040cc 0%, #1f2ea6 55%, #172285 100%);
  color: #eef0ff;
  /* font-size is set per face by d20.js so each label fits its triangle. */
  font: 700 calc(var(--edge) * 0.082) / 1.04 var(--die-font);
  letter-spacing: 0.03em;
  text-align: center;
}

/* Lighting: d20.js sets --shade from how far the face is turned away. */
.face::after {
  content: "";
  position: absolute;
  inset: 0;
  background: #01030b;
  opacity: var(--shade, 0);
}

.face-text {
  position: absolute;
  left: 0;
  right: 0;
  top: 72%; /* a little below the centroid, where the triangle is wider */
  translate: 0 -50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-shadow: 0 0 0.35em rgba(170, 190, 255, 0.45);
}

.bubbles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.bubbles i {
  position: absolute;
  bottom: -8%;
  left: var(--x);
  width: var(--s);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, rgba(200, 215, 255, 0.55), rgba(120, 150, 255, 0.08) 70%);
  opacity: 0;
}

.ball.stirring .bubbles i {
  animation: bubble 1.5s ease-in var(--d) both;
}

@keyframes bubble {
  0% { opacity: 0; translate: 0 0; }
  15% { opacity: 0.85; }
  100% { opacity: 0; translate: var(--drift) calc(var(--window) * -1.1); }
}

/* ------------------------------------------------------------ messages -- */

.asked {
  margin: 0;
  max-width: 480px;
  color: var(--muted);
  font-style: italic;
  text-align: center;
  overflow-wrap: anywhere;
}

.notice,
.support {
  width: min(100%, 480px);
  margin: 0;
  border-radius: 14px;
  padding: 12px 16px;
}

.notice {
  color: var(--warn-ink);
  background: var(--warn-bg);
  border: 1px solid var(--warn-line);
  text-align: center;
}

.support {
  background: var(--support-bg);
  border: 1px solid var(--support-line);
}

.support h2 {
  margin: 0 0 4px;
  font-size: 1rem;
}

.support p {
  margin: 0;
  color: var(--ink);
}

/* ---------------------------------------------------------------- form -- */

.ask {
  width: min(100%, 480px);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

.ask input {
  min-width: 0;
  padding: 12px 18px;
  font: inherit;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
}

.ask input::placeholder {
  color: #77738f;
}

.ask input:focus-visible,
.ask button:focus-visible {
  outline: 2px solid var(--accent-hover);
  outline-offset: 2px;
}

.ask-submit {
  padding: 0 24px;
  font: 600 1rem / 1 var(--ui-font);
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 999px;
  cursor: pointer;
}

.ask-submit:hover {
  background: var(--accent-hover);
}

.ask-submit[aria-disabled="true"] {
  opacity: 0.55;
  cursor: progress;
}

/* Make-your-own: question, then choices, then a full-width Ask. */
.ask-custom {
  grid-template-columns: 1fr;
}

.ask-custom .ask-submit {
  padding: 14px 24px;
  margin-top: 8px;
}

.choices {
  min-width: 0;
  margin: 12px 0 0;
  padding: 0;
  border: 0;
}

.choices legend {
  margin-bottom: 8px;
  padding: 0 18px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.choice-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.choice-list li {
  position: relative;
  display: flex;
}

.choice-list input {
  flex: 1;
  padding-right: 44px;
}

.choice-remove {
  position: absolute;
  right: 6px;
  top: 50%;
  translate: 0 -50%;
  width: 32px;
  height: 32px;
  font-size: 1.25rem;
  line-height: 1;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
}

.choice-remove:hover {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.08);
}

.choice-remove:disabled {
  visibility: hidden;
}

.choices-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 12px;
  margin-top: 10px;
  padding-right: 18px;
  font-size: 0.8125rem;
  color: var(--muted);
}

.add-choice {
  padding: 7px 16px;
  font: 600 0.875rem / 1 var(--ui-font);
  color: var(--ink);
  background: transparent;
  border: 1px dashed rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  cursor: pointer;
}

.add-choice:hover:not(:disabled) {
  border-style: solid;
  background: rgba(255, 255, 255, 0.05);
}

.add-choice:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

@media (max-width: 420px) {
  .choice-list {
    grid-template-columns: 1fr;
  }
}

.ask-meta {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 0 18px;
  font-size: 0.8125rem;
  color: var(--muted);
}

.counter {
  font-variant-numeric: tabular-nums;
}

/* Turnstile only fills this when Cloudflare needs the visitor to interact. */
.human-check {
  grid-column: 1 / -1;
}

.human-check:empty {
  display: none;
}

.counter.near {
  color: #ffd479;
}

.counter.full {
  color: #ff9d8a;
}

.credit {
  margin-top: auto;
  font-size: 0.8125rem;
  color: var(--muted);
}

/* ------------------------------------------------------ reduced motion -- */

@media (prefers-reduced-motion: reduce) {
  .eight,
  .window {
    transition: opacity 300ms;
  }

  .ball[data-side="window"] .eight {
    animation: none;
    opacity: 0;
  }

  .ball[data-side="window"] .window {
    animation: none;
    transform: none;
    opacity: 1;
  }

  .ball-wrap.shaking,
  .ball-wrap.shaking .ball-surface,
  .ball.stirring .bubbles i,
  .die-depth.settled {
    animation: none;
  }
}