:root {
  color-scheme: light;
  --ink: var(--color-ink);
  --muted: var(--color-muted);
  --paper: var(--color-canvas);
  --surface: var(--color-surface);
  --surface-raised: var(--color-surface-raised);
  --line: var(--color-border);
  --lime: var(--color-primary);
  --blue: var(--color-secondary);
  --coral: var(--color-attention);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

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

html {
  min-width: 320px;
  min-height: 100%;
  background: var(--paper);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px),
    var(--paper);
  background-size: 44px 44px;
}

button {
  font: inherit;
}

button:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

.home-link {
  position: fixed;
  z-index: 20;
  top: 18px;
  left: 18px;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink);
  background: var(--surface-raised);
  box-shadow: 0 10px 25px color-mix(in srgb, var(--ink) 10%, transparent);
  font-size: 1.35rem;
  line-height: 1;
  text-decoration: none;
  transition: transform 160ms ease, color 160ms ease, border-color 160ms ease;
}

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

.page-decoration {
  position: fixed;
  z-index: 0;
  border-radius: 50%;
  pointer-events: none;
}

.page-decoration--lime {
  top: -220px;
  right: -130px;
  width: 410px;
  height: 410px;
  background: color-mix(in srgb, var(--lime) 58%, transparent);
}

.page-decoration--blue {
  bottom: -280px;
  left: -190px;
  width: 520px;
  height: 520px;
  background: var(--color-secondary-soft);
}

.game-shell {
  position: relative;
  z-index: 1;
  width: min(1220px, calc(100% - 32px));
  min-height: 100svh;
  padding: 18px 0;
}

.game-topbar {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-left: 58px;
}

.game-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  text-decoration: none;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  grid-template-columns: repeat(2, 12px);
  grid-template-rows: repeat(2, 12px);
  place-content: center;
  gap: 2px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface-raised);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--ink) 8%, transparent);
}

.brand-mark i {
  display: grid;
  place-items: center;
  border-radius: 3px;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.44rem;
  font-style: normal;
  line-height: 1;
}

.brand-mark i:nth-child(2),
.brand-mark i:nth-child(3) {
  background: var(--lime);
  color: var(--ink);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.text-action,
.new-game-button,
.primary-button,
.dialog-text-button,
.dialog-close {
  border: 0;
}

.text-action,
.new-game-button {
  min-height: 44px;
  padding: 0 16px;
  border-radius: 12px;
  font-size: 0.72rem;
  font-weight: 850;
}

.text-action {
  color: var(--ink);
  background: transparent;
}

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

.new-game-button,
.primary-button {
  color: var(--ink);
  background: var(--lime);
  box-shadow: 0 10px 20px color-mix(in srgb, var(--lime) 30%, transparent);
}

.new-game-button:hover,
.primary-button:hover {
  background: var(--color-primary-hover);
}

.game-layout {
  min-height: calc(100svh - 84px);
  padding: 12px 0 4px;
}

.intro-panel {
  padding-left: clamp(8px, 2vw, 28px);
}

.eyebrow,
.board-kicker,
.dialog-kicker {
  margin: 0;
  color: var(--coral);
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.18em;
}

.intro-panel h1 {
  max-width: 430px;
  margin: 12px 0 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3.2rem, 5.6vw, 5.2rem);
  font-weight: 500;
  line-height: 0.9;
  letter-spacing: -0.065em;
}

.intro-panel h1 em {
  color: var(--blue);
  font-weight: inherit;
}

.intro-lead {
  max-width: 390px;
  margin: 19px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

.rules-list {
  max-width: 400px;
  display: grid;
  gap: 10px;
  margin: 24px 0 0;
}

.rules-list li {
  display: flex;
  align-items: center;
  gap: 11px;
}

.rules-list li > span {
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface-raised);
  color: var(--blue);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 700;
}

.rules-list p,
.rules-list strong,
.rules-list small {
  display: block;
  margin: 0;
}

.rules-list strong {
  font-size: 0.77rem;
}

.rules-list small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.7rem;
}

.signal-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 750;
}

.signal-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.signal-legend i {
  width: 15px;
  height: 15px;
  display: grid;
  place-items: center;
  border-radius: 4px;
  font-size: 0.55rem;
  font-style: normal;
}

.signal-legend__selected {
  border: 2px solid var(--blue);
  background: var(--color-secondary-soft);
}

.signal-legend__match {
  border: 1px solid var(--line);
  background: var(--color-primary-soft);
}

.signal-legend__error {
  border: 1px solid var(--coral);
  color: var(--coral);
  background: var(--surface-raised);
  font-weight: 900;
}

.game-dialog {
  position: relative;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: var(--surface-raised);
  box-shadow: 0 28px 80px color-mix(in srgb, var(--ink) 25%, transparent);
}

.dialog-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  color: var(--ink);
  background: transparent;
  font-size: 1.45rem;
}

.dialog-close:hover {
  color: var(--coral);
  background: var(--color-attention-soft);
}

.dialog-icon {
  width: 66px;
  height: 66px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 19px;
  color: var(--paper);
  background: var(--blue);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.05rem;
  font-weight: 700;
}

.dialog-icon--result {
  color: var(--ink);
  background: var(--lime);
  font-size: 2rem;
}

.game-dialog h2 {
  margin: 8px 0 10px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2.15rem;
  font-weight: 500;
  letter-spacing: -0.045em;
}

.game-dialog > p:not(.dialog-kicker) {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

.dialog-tip {
  margin: 18px 0;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--muted);
  background: var(--surface);
  font-size: 0.78rem;
  line-height: 1.45;
}

.dialog-tip span {
  margin-right: 6px;
  color: var(--blue);
  font-weight: 900;
}

.primary-button {
  width: 100%;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 14px;
  font-size: 0.8rem;
  font-weight: 900;
}

.dialog-text-button {
  width: 100%;
  min-height: 44px;
  margin-top: 7px;
  color: var(--blue);
  background: transparent;
  font-size: 0.75rem;
  font-weight: 850;
}

.result-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 7px;
  margin: 19px 0;
}

.result-stats span {
  display: grid;
  gap: 2px;
  padding: 10px 6px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  text-align: center;
}

.result-stats small {
  color: var(--muted);
  font-size: 0.6rem;
  font-weight: 800;
  text-transform: uppercase;
}

.result-stats b {
  font-variant-numeric: tabular-nums;
}