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

:root {
  --ink: var(--color-ink);
  --ink-muted: var(--color-muted);
  --paper: var(--color-surface);
  --paper-raised: var(--color-surface-raised);
  --line: var(--color-border);
  --lime: var(--color-primary);
  --blue: var(--color-secondary);
  --coral: var(--color-attention);
}

html {
  min-width: 320px;
  color-scheme: light;
}

body {
  min-width: 320px;
  min-height: 100dvh;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background-color: var(--color-canvas);
  background-image:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px);
  background-size: 24px 24px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
  font: inherit;
}

button:focus-visible,
input:focus-visible + label,
a:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

.home-link {
  position: fixed;
  z-index: 5;
  top: 18px;
  left: 18px;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 13px;
  color: var(--ink);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--ink) 8%, transparent);
  backdrop-filter: blur(8px);
  transition: color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.home-link:hover {
  color: var(--blue);
  border-color: var(--blue);
  transform: translateX(-2px);
}

.home-link svg,
.icon-button svg,
.primary-button svg,
.text-button svg,
.setup-option svg {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.home-link svg {
  width: 21px;
  height: 21px;
}

.page-decoration {
  position: fixed;
  z-index: -1;
  border-radius: 50%;
  pointer-events: none;
}

.page-decoration--lime {
  right: -190px;
  bottom: -210px;
  width: 430px;
  height: 430px;
  border: 75px solid color-mix(in srgb, var(--lime) 17%, transparent);
}

.page-decoration--blue {
  top: 12%;
  left: -170px;
  width: 300px;
  height: 300px;
  border: 56px solid color-mix(in srgb, var(--blue) 8%, transparent);
}

.app-shell {
  width: min(1080px, calc(100% - 48px));
  min-height: 100dvh;
  display: flex;
  align-items: center;
  margin-inline: auto;
  padding: 22px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.brand-mark {
  position: relative;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border-radius: 13px;
  background: var(--ink);
}

.brand-disc,
.setup-icon i {
  width: 12px;
  aspect-ratio: 1;
  border-radius: 50%;
}

.brand-disc--dark {
  border: 2px solid var(--lime);
  background: var(--ink);
}

.brand-disc--light {
  border: 2px solid var(--blue);
  background: var(--color-canvas);
}

.start-screen {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(400px, 460px);
  align-items: center;
  gap: clamp(42px, 8vw, 104px);
}

.eyebrow {
  margin: 58px 0 0;
  color: color-mix(in srgb, var(--coral) 78%, var(--ink));
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.17em;
}

.start-copy h1 {
  max-width: 550px;
  margin: 10px 0 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(4rem, 7.5vw, 6.8rem);
  font-weight: 500;
  line-height: 0.88;
  letter-spacing: -0.065em;
}

.start-copy h1 em {
  display: block;
  color: var(--blue);
  font-weight: inherit;
}

.start-lead {
  max-width: 450px;
  margin: 24px 0 0;
  color: var(--ink-muted);
  font-size: 1rem;
  line-height: 1.65;
}

.rule-sketch {
  position: relative;
  width: 270px;
  height: 74px;
  margin: 38px 0 0;
  transform: rotate(-3deg);
}

.sketch-disc {
  position: absolute;
  top: 14px;
  width: 38px;
  aspect-ratio: 1;
  border-radius: 50%;
  box-shadow: 0 6px 12px color-mix(in srgb, var(--ink) 16%, transparent);
}

.sketch-disc--black {
  left: 0;
  background: var(--ink);
}

.sketch-disc--white {
  left: 45px;
  border: 2px solid var(--ink);
  background: var(--paper-raised);
}

.sketch-disc--middle {
  left: 90px;
}

.sketch-arrow {
  position: absolute;
  top: 20px;
  left: 140px;
  color: var(--coral);
  font-size: 1.45rem;
  font-weight: 900;
}

.sketch-disc--result-one { left: 176px; }
.sketch-disc--result-two { left: 218px; }
.sketch-disc--result-three { left: 260px; }

.sketch-disc--result-one,
.sketch-disc--result-two,
.sketch-disc--result-three {
  top: 14px;
  background: var(--ink);
}

.setup-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: color-mix(in srgb, var(--paper-raised) 91%, transparent);
  box-shadow: var(--shadow-raised);
  backdrop-filter: blur(12px);
}

.setup-card__header {
  display: flex;
  align-items: center;
  gap: 13px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.setup-icon {
  width: 42px;
  height: 42px;
  flex: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  border-radius: 13px;
  background: var(--color-primary-soft);
}

.setup-icon i:first-child {
  background: var(--ink);
}

.setup-icon i:last-child {
  border: 2px solid var(--ink);
  background: var(--paper-raised);
}

.setup-label,
.setup-hint {
  margin: 0;
}

.setup-label {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.35rem;
  font-weight: 600;
}

.setup-hint {
  margin-top: 2px;
  color: var(--ink-muted);
  font-size: 0.68rem;
}

.setup-fieldset {
  min-width: 0;
  margin: 16px 0 0;
  padding: 0;
  border: 0;
}

.setup-fieldset legend {
  margin: 0 0 7px;
  color: var(--ink-muted);
  font-size: 0.61rem;
  font-weight: 900;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.setup-option {
  min-height: 62px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--ink);
  background: color-mix(in srgb, var(--paper) 72%, transparent);
  cursor: pointer;
  transition: border-color 150ms ease, background 150ms ease, transform 150ms ease;
}

.setup-option:hover {
  border-color: color-mix(in srgb, var(--blue) 45%, transparent);
  transform: translateY(-1px);
}

.btn-check:checked + .setup-option {
  border-color: color-mix(in srgb, var(--lime) 75%, var(--ink));
  background: color-mix(in srgb, var(--lime) 22%, var(--paper));
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--lime) 52%, transparent);
}

.setup-option svg {
  width: 25px;
  height: 25px;
  flex: none;
  color: var(--blue);
}

.setup-option span,
.setup-option strong,
.setup-option small {
  display: block;
}

.setup-option strong {
  font-size: 0.77rem;
}

.setup-option small {
  margin-top: 2px;
  color: var(--ink-muted);
  font-size: 0.59rem;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 7px;
}

.setup-option--level {
  min-height: 68px;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
  padding: 7px;
  text-align: center;
}

.level-bars {
  height: 14px;
  display: inline-flex;
  align-items: end;
  gap: 3px;
}

.level-bars i {
  width: 4px;
  border-radius: 4px;
  background: color-mix(in srgb, var(--ink) 16%, transparent);
}

.level-bars i:nth-child(1) { height: 5px; }
.level-bars i:nth-child(2) { height: 9px; }
.level-bars i:nth-child(3) { height: 13px; }
.level-bars--one i:nth-child(1),
.level-bars--two i:nth-child(-n + 2),
.level-bars--three i { background: var(--blue); }

.primary-button {
  width: 100%;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 20px;
  padding: 5px 5px 5px 18px;
  border: 0;
  border-radius: 15px;
  color: var(--ink);
  background: var(--lime);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: background 150ms ease, transform 150ms ease;
}

.primary-button:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.primary-button__arrow {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: color-mix(in srgb, var(--ink) 9%, transparent);
}

.primary-button svg {
  width: 20px;
  height: 20px;
}

.game-dialog {
  width: min(410px, calc(100vw - 28px));
  align-items: center;
  margin-inline: auto;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 26px;
  color: var(--ink);
  background: var(--paper-raised);
  box-shadow: var(--shadow-raised);
  text-align: center;
}

.dialog-icon {
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border-radius: 17px;
  background: var(--color-primary-soft);
}

.dialog-icon--pause i {
  width: 6px;
  height: 23px;
  border-radius: 4px;
  background: var(--ink);
}

.dialog-icon--result {
  border: 10px solid var(--ink);
  border-radius: 50%;
  background: var(--paper-raised);
}

.dialog-icon--result.is-white {
  border-color: var(--paper-raised);
  background: var(--blue);
  box-shadow: inset 0 0 0 2px var(--ink), 0 0 0 2px var(--ink);
}

.dialog-kicker {
  margin: 18px 0 5px;
  color: color-mix(in srgb, var(--coral) 78%, var(--ink));
  font-size: 0.63rem;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.game-dialog h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2.5rem;
  font-weight: 500;
  letter-spacing: -0.04em;
}

.game-dialog > p:not(.dialog-kicker) {
  margin: 9px 0 2px;
  color: var(--ink-muted);
  font-size: 0.84rem;
}

.dialog-text-button {
  min-height: 42px;
  margin-top: 7px;
  padding: 7px 12px;
  border: 0;
  color: var(--ink-muted);
  background: transparent;
  font-size: 0.72rem;
  font-weight: 800;
}

.dialog-text-button:hover {
  color: var(--blue);
}