body.freecell-page {
  --freecell-ink: #17242d;
  --freecell-muted: #53636d;
  --freecell-panel: #ffffff;
  --freecell-line: #26343d;
  --freecell-soft-line: #d4cec2;
  --freecell-accent: #c84d2b;
  --freecell-table: #266b55;
  --freecell-table-dark: #1f4e42;
  --card-w: clamp(54px, 10.8vw, 92px);
  --card-h: calc(var(--card-w) * 1.4);
  --stack-gap: clamp(24px, 4.8vw, 34px);
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, #f7f3ea 0%, #e8f1ef 100%);
  color: var(--freecell-ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
}

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

.freecell-page button,
.freecell-page a {
  font: inherit;
}

.freecell-page button {
  color: inherit;
  touch-action: manipulation;
}

.freecell-app {
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: max(14px, env(safe-area-inset-top)) 12px max(22px, env(safe-area-inset-bottom));
}

.freecell-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: center;
  margin-bottom: 12px;
}

.freecell-title-block {
  min-width: 0;
}

.freecell-kicker {
  margin: 0 0 2px;
  color: #96371f;
  font-size: 0.92rem;
  font-weight: 900;
}

.freecell-page h1,
.freecell-page h2 {
  margin: 0;
  line-height: 1.18;
  letter-spacing: 0;
}

.freecell-page h1 {
  font-size: clamp(1.45rem, 6vw, 2.4rem);
}

.freecell-page h2 {
  font-size: 1.18rem;
}

.freecell-stats {
  display: grid;
  gap: 4px;
  min-width: 104px;
  font-weight: 900;
  text-align: right;
}

.freecell-start-panel,
.freecell-message-panel,
.freecell-actions {
  border: 2px solid var(--freecell-soft-line);
  border-radius: 8px;
  background: var(--freecell-panel);
  padding: 12px;
}

.freecell-start-panel {
  display: grid;
  gap: 10px;
  margin-bottom: 10px;
}

.freecell-start-panel p,
.freecell-message-panel p {
  margin: 0;
  color: var(--freecell-muted);
  line-height: 1.5;
}

.freecell-start-panel p {
  margin-top: 6px;
}

.freecell-message-panel {
  margin-bottom: 10px;
  font-weight: 800;
}

.freecell-message-panel.is-error p {
  color: #a72f22;
}

.freecell-link-button,
.freecell-primary,
.freecell-secondary {
  min-height: 52px;
  border: 2px solid var(--freecell-line);
  border-radius: 8px;
  padding: 8px 10px;
  font-weight: 900;
  text-align: center;
}

.freecell-link-button,
.freecell-secondary {
  background: #ffffff;
  color: var(--freecell-ink);
  text-decoration: none;
}

.freecell-primary {
  background: var(--freecell-accent);
  color: #ffffff;
}

.freecell-top-row,
.freecell-tableau {
  border: 3px solid var(--freecell-table-dark);
  border-radius: 8px;
  background: var(--freecell-table);
  padding: 10px;
}

.freecell-top-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  align-items: start;
  margin-bottom: 12px;
}

.freecell-area-label {
  margin: 0 0 6px;
  color: #ffffff;
  font-weight: 900;
}

.freecell-freecells,
.freecell-foundations {
  display: grid;
  grid-template-columns: repeat(4, var(--card-w));
  gap: 8px;
}

.freecell-foundations {
  justify-content: end;
}

.freecell-slot,
.freecell-card {
  width: var(--card-w);
  height: var(--card-h);
  border-radius: 8px;
}

.freecell-slot {
  display: grid;
  place-items: center;
  border: 2px dashed rgba(255, 255, 255, 0.62);
  background: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.9);
  font-size: 1rem;
  font-weight: 900;
}

.freecell-slot.has-card {
  border-style: solid;
  background: transparent;
}

.freecell-tableau {
  display: grid;
  grid-template-columns: repeat(8, var(--card-w));
  gap: 8px;
  min-height: calc(var(--card-h) + var(--stack-gap) * 7);
  overflow-x: auto;
  overflow-y: hidden;
}

.freecell-pile {
  position: relative;
  min-width: var(--card-w);
  min-height: var(--card-h);
  border-radius: 8px;
}

.freecell-pile-empty {
  position: absolute;
  inset: 0 auto auto 0;
}

.freecell-card {
  position: absolute;
  left: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
  border: 2px solid #202a31;
  background: #fffdf8;
  color: #111820;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.24);
  padding: 5px;
  font-weight: 900;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.freecell-card.in-slot {
  position: relative;
  left: auto;
  top: auto;
}

.freecell-card.is-red {
  color: #b32722;
}

.freecell-card.is-selected {
  outline: 4px solid #f8d35a;
  outline-offset: -4px;
}

.freecell-card-corner {
  font-size: clamp(0.72rem, 2.2vw, 1rem);
  line-height: 1.05;
}

.freecell-card-center {
  display: grid;
  place-items: center;
  font-size: clamp(1.35rem, 4.8vw, 2.4rem);
}

.freecell-card-bottom {
  justify-self: end;
  rotate: 180deg;
}

.freecell-actions {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.freecell-action-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.freecell-wide {
  width: 100%;
}

.freecell-modal {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(23, 36, 45, 0.58);
}

.freecell-modal[hidden] {
  display: none;
}

.freecell-modal-box {
  display: grid;
  gap: 12px;
  width: min(460px, 100%);
  border: 3px solid var(--freecell-line);
  border-radius: 8px;
  background: var(--freecell-panel);
  padding: 18px;
}

.freecell-help-list {
  margin: 0;
  padding-left: 1.2em;
  color: var(--freecell-muted);
  line-height: 1.55;
}

.freecell-result-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 0;
}

.freecell-result-list div {
  border: 2px solid var(--freecell-soft-line);
  border-radius: 8px;
  background: #f7f3ea;
  padding: 10px;
}

.freecell-result-list dt {
  color: var(--freecell-muted);
  font-size: 0.9rem;
  font-weight: 800;
}

.freecell-result-list dd {
  margin: 4px 0 0;
  font-size: 1.18rem;
  font-weight: 900;
}

.freecell-clear-message {
  margin: 0;
  color: var(--freecell-muted);
  line-height: 1.5;
}

@media (max-width: 820px) {
  body.freecell-page {
    --card-w: clamp(38px, 10vw, 58px);
    --stack-gap: clamp(18px, 5.2vw, 27px);
  }

  .freecell-header {
    grid-template-columns: 1fr auto;
  }

  .freecell-link-button {
    grid-column: 1 / -1;
    justify-self: start;
  }

  .freecell-top-row {
    grid-template-columns: 1fr;
  }

  .freecell-foundations {
    justify-content: start;
  }

  .freecell-tableau {
    gap: 5px;
    padding: 7px;
  }

  .freecell-actions {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 430px) {
  .freecell-app {
    padding-left: 8px;
    padding-right: 8px;
  }

  .freecell-header {
    grid-template-columns: 1fr;
  }

  .freecell-stats {
    grid-template-columns: auto auto;
    justify-content: space-between;
    text-align: left;
  }

  .freecell-actions {
    grid-template-columns: 1fr;
  }
}