:root {
  color-scheme: light;
  --table-felt: #2f6549;
  --table-rail: #183425;
  --table-shadow: rgba(19, 29, 23, 0.35);
  --card-face: #fbf5e7;
  --card-edge: #d9caa9;
  --ink-black: #1d2522;
  --ink-red: #b4382f;
  --accent: #d4a239;
  --accent-strong: #f0c95d;
  --slot-border: rgba(250, 245, 229, 0.5);
  --card-radius: 10px;
  --card-w: clamp(66px, 9.9vw, 116px);
  --card-h: calc(var(--card-w) * 1.42);
  --stack-gap: clamp(28px, 3.4vw, 42px);
  --table-background-image: none;
  --card-back-image: none;
}

* {
  box-sizing: border-box;
}

html,
body,
#app {
  min-height: 100%;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.06), transparent 35%),
    var(--table-background-image),
    var(--table-felt);
  color: #f8efd8;
  font-family: Avenir Next, Trebuchet MS, Verdana, sans-serif;
  letter-spacing: 0;
}

button,
select {
  font: inherit;
}

.freecell-app {
  width: min(1360px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 18px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 18px;
}

.game-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 4px 0;
}

.title-group h1 {
  margin: 0;
  font-family: Georgia, Charter, serif;
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
}

.title-group p {
  margin: 6px 0 0;
  color: rgba(248, 239, 216, 0.72);
  font-size: 0.9rem;
}

.game-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: end;
  gap: 8px;
}

.control-button,
.theme-select {
  min-height: 38px;
  border: 1px solid rgba(248, 239, 216, 0.32);
  border-radius: 6px;
  background: color-mix(in srgb, var(--table-rail) 76%, white);
  color: #fff7e4;
  box-shadow: 0 10px 22px rgba(10, 19, 14, 0.18);
}

.control-button {
  padding: 0 14px;
  cursor: pointer;
}

.control-button:hover:not(:disabled),
.theme-select:hover {
  border-color: var(--accent-strong);
}

.control-button:disabled {
  cursor: default;
  opacity: 0.45;
}

.theme-select {
  padding: 0 34px 0 12px;
  cursor: pointer;
}

.board {
  display: grid;
  gap: 24px;
  min-width: 0;
}

.top-row {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 24px;
}

.zone-set {
  display: grid;
  grid-template-columns: repeat(4, var(--card-w));
  gap: clamp(7px, 1.1vw, 14px);
}

.card-slot,
.tableau-column {
  position: relative;
  border: 1px solid var(--slot-border);
  border-radius: var(--card-radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02)),
    rgba(19, 44, 31, 0.2);
  box-shadow: inset 0 0 0 1px rgba(21, 31, 23, 0.16);
}

.card-slot {
  width: var(--card-w);
  height: var(--card-h);
  display: grid;
  place-items: center;
}

.slot-suit {
  color: var(--suit-ink);
  font-size: 1.9rem;
  opacity: 0.5;
}

.tableau {
  display: grid;
  grid-template-columns: repeat(8, minmax(var(--card-w), 1fr));
  gap: clamp(7px, 1.1vw, 14px);
  min-width: 0;
  align-items: start;
}

.tableau-column {
  min-height: calc(var(--card-h) + 42vh);
  padding: 0;
}

.playing-card {
  width: var(--card-w);
  height: var(--card-h);
  border: 1px solid var(--card-edge);
  border-radius: var(--card-radius);
  position: relative;
  display: block;
  overflow: hidden;
  background:
    radial-gradient(circle at 22% 18%, rgba(255, 255, 255, 0.9), transparent 28%),
    var(--card-face);
  color: var(--suit-ink);
  box-shadow:
    0 9px 18px var(--table-shadow),
    inset 0 0 0 1px rgba(255, 255, 255, 0.48);
  cursor: pointer;
  touch-action: manipulation;
  transition: transform 160ms ease, box-shadow 160ms ease, outline-color 160ms ease;
}

.playing-card:hover {
  transform: translateY(-2px);
}

.playing-card:focus-visible,
.control-button:focus-visible,
.theme-select:focus-visible {
  outline: 3px solid var(--accent-strong);
  outline-offset: 3px;
}

.playing-card.is-selected {
  outline: 3px solid var(--accent-strong);
  outline-offset: -2px;
  transform: translateY(-5px);
}

.playing-card.is-locked {
  cursor: default;
}

.playing-card.is-dragging {
  opacity: 0.62;
}

.stacked-card {
  position: absolute;
  top: calc(var(--stack-index) * var(--stack-gap));
  left: 50%;
  transform: translateX(-50%);
}

.stacked-card:hover {
  transform: translateX(-50%) translateY(-2px);
}

.stacked-card.is-selected {
  transform: translateX(-50%) translateY(-5px);
}

.card-corner {
  --corner-offset: clamp(5px, calc(var(--card-w) * 0.07), 9px);
  position: absolute;
  top: var(--corner-offset);
  left: var(--corner-offset);
  z-index: 2;
  display: grid;
  gap: clamp(2px, calc(var(--card-w) * 0.018), 4px);
  justify-items: center;
  width: calc(var(--card-w) * 0.22);
  min-width: 20px;
  line-height: 0.9;
  font-family: Georgia, Charter, serif;
  font-weight: 800;
  font-size: clamp(0.92rem, calc(var(--card-w) * 0.16), 1.18rem);
  pointer-events: none;
}

.card-corner.bottom {
  inset: auto var(--corner-offset) var(--corner-offset) auto;
  transform: rotate(180deg);
}

.card-pips,
.card-court {
  position: absolute;
  inset: 27% 15% 18%;
  pointer-events: none;
}

.card-pip {
  position: absolute;
  color: var(--suit-ink);
  font-family: Georgia, Charter, serif;
  font-weight: 700;
  font-size: clamp(1.3rem, calc(var(--card-w) * 0.27), 2rem);
  line-height: 0.84;
  transform: translate(-50%, -50%);
}

.pip-count-7 .card-pip,
.pip-count-8 .card-pip {
  font-size: clamp(1.12rem, calc(var(--card-w) * 0.24), 1.75rem);
}

.pip-count-9 .card-pip,
.pip-count-10 .card-pip {
  font-size: clamp(1.02rem, calc(var(--card-w) * 0.22), 1.58rem);
}

.card-pip.pip-inverted {
  transform: translate(-50%, -50%) rotate(180deg);
}

.card-pip.pip-hero {
  font-size: clamp(2.65rem, calc(var(--card-w) * 0.6), 4.3rem);
}

.pip-tc {
  top: 13%;
  left: 50%;
}

.pip-bc {
  top: 87%;
  left: 50%;
}

.pip-tl {
  top: 17%;
  left: 28%;
}

.pip-tr {
  top: 17%;
  left: 72%;
}

.pip-uc {
  top: 32%;
  left: 50%;
}

.pip-ul {
  top: 35%;
  left: 28%;
}

.pip-ur {
  top: 35%;
  left: 72%;
}

.pip-ml,
.pip-c,
.pip-mr {
  top: 50%;
}

.pip-ml {
  left: 28%;
}

.pip-c {
  left: 50%;
}

.pip-mr {
  left: 72%;
}

.pip-ll {
  top: 65%;
  left: 28%;
}

.pip-lr {
  top: 65%;
  left: 72%;
}

.pip-lc {
  top: 68%;
  left: 50%;
}

.pip-bl {
  top: 83%;
  left: 28%;
}

.pip-br {
  top: 83%;
  left: 72%;
}

.card-court {
  display: grid;
  place-items: center;
  color: var(--suit-ink);
  font-family: Georgia, Charter, serif;
  line-height: 0.86;
}

.court-rank {
  font-size: clamp(2.7rem, calc(var(--card-w) * 0.58), 4.5rem);
  font-weight: 800;
}

.card-face-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

.is-legal {
  border-color: var(--accent-strong);
  box-shadow:
    inset 0 0 0 2px color-mix(in srgb, var(--accent-strong) 70%, transparent),
    0 0 0 3px rgba(240, 201, 93, 0.14);
}

.is-drag-target {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.04)),
    color-mix(in srgb, var(--accent) 25%, transparent);
}

.status-bar {
  min-height: 34px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding: 0 4px 6px;
  color: rgba(248, 239, 216, 0.8);
  font-size: 0.9rem;
}

.status-live {
  color: #fff7e4;
}

@media (max-width: 820px) {
  :root {
    --card-w: clamp(58px, 15vw, 86px);
    --stack-gap: 28px;
  }

  .freecell-app {
    padding: 12px;
    gap: 14px;
  }

  .game-header,
  .top-row {
    align-items: stretch;
    flex-direction: column;
  }

  .game-controls {
    justify-content: start;
  }

  .board {
    overflow-x: auto;
    padding-bottom: 8px;
  }

  .top-row,
  .tableau {
    min-width: max-content;
  }

  .tableau-column {
    min-height: calc(var(--card-h) + 360px);
  }

  .card-pips,
  .card-court {
    inset: 27% 15% 18%;
  }
}