:root {
  color-scheme: dark;
  --felt: #0b6b3a;
  --card: #ffffff;
  --ink: #000000;
  --red: #b22222;
  --gold: #d9b955;
  --line: rgba(255, 255, 255, 0.28);
  --viewport-w: 100vw;
  --pad: clamp(8px, 2vw, 30px);
  --gap: clamp(5px, 1.15vw, 18px);
  --cw: min(82px, calc((var(--viewport-w) - (2 * var(--pad)) - (6 * var(--gap))) / 7));
  --ch: calc(var(--cw) * 1.42);
  --down: clamp(24px, 3vw, 34px);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  min-height: 100%;
  overscroll-behavior: none;
}

body {
  font-family: Segoe UI, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--felt);
  color: #f8f1df;
  overflow: hidden;
  touch-action: none;
}

body.dragging {
  cursor: grabbing;
}

button {
  font: inherit;
}

.game-shell {
  min-height: 100vh;
  position: relative;
}

.board {
  width: var(--viewport-w);
  max-width: var(--viewport-w);
  height: 100dvh;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: none;
  touch-action: none;
  padding: var(--pad);
  background: var(--felt);
}

.top-row,
.tableau {
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(7, var(--cw));
  gap: var(--gap);
  width: calc(var(--cw) * 7 + var(--gap) * 6);
  margin-inline: auto;
}

.top-row {
  margin-bottom: clamp(34px, 6vh, 52px);
}

.spacer {
  grid-column: span 1;
}

.slot,
.column {
  width: var(--cw);
  min-height: var(--ch);
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-radius: 9px;
  background: transparent;
  color: rgba(255, 255, 255, 0.45);
}

.slot {
  position: relative;
  padding: 0;
  cursor: pointer;
}

.slot::before {
  content: attr(aria-label);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: clamp(0.52rem, 1.5vw, 0.74rem);
  font-weight: 800;
  text-transform: uppercase;
  pointer-events: none;
}

.stock.has-cards {
  border-style: solid;
  background:
    linear-gradient(135deg, transparent 43%, rgba(173, 216, 230, 0.8) 44% 46%, transparent 47%),
    linear-gradient(45deg, transparent 43%, rgba(173, 216, 230, 0.8) 44% 46%, transparent 47%),
    #00008b;
}

.stock.has-cards::before {
  content: "";
}

.slot.has-card::before {
  content: "";
}

.slot > .card {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.column {
  position: relative;
  border-color: transparent;
}

.card {
  position: relative;
  width: var(--cw);
  height: var(--ch);
  border: 1px solid rgba(0, 0, 0, 0.58);
  border-radius: 9px;
  background: var(--card);
  color: var(--ink);
  box-shadow: none;
  cursor: pointer;
  padding: max(5px, calc(var(--cw) * 0.08));
  user-select: none;
  touch-action: none;
}

.card.drag-source {
  opacity: 0.35;
}

.card.red {
  color: var(--red);
}

.card.back {
  background:
    linear-gradient(135deg, transparent 43%, rgba(173, 216, 230, 0.8) 44% 46%, transparent 47%),
    linear-gradient(45deg, transparent 43%, rgba(173, 216, 230, 0.8) 44% 46%, transparent 47%),
    #00008b;
  cursor: pointer;
}

.card.pending-flip {
  opacity: 0.72;
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.card.selected {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

.corner {
  position: absolute;
  left: max(5px, calc(var(--cw) * 0.08));
  top: max(5px, calc(var(--cw) * 0.08));
  font-size: clamp(0.68rem, 2vw, 1rem);
  line-height: 1;
  font-weight: 900;
}

.pip {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(1.35rem, 5vw, 2.5rem);
  line-height: 1;
}

.corner.bottom {
  left: auto;
  top: auto;
  right: max(5px, calc(var(--cw) * 0.08));
  bottom: max(5px, calc(var(--cw) * 0.08));
}

.column .card {
  position: absolute;
  left: 0;
}

.controls {
  position: fixed;
  right: 8px;
  bottom: 8px;
  z-index: 10;
  display: flex;
  gap: 6px;
  padding: 6px;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.67);
}

.control-button {
  min-height: 34px;
  padding: 4px 10px;
  border: 0;
  border-radius: 6px;
  background: #f2f2f2;
  color: #111111;
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
  display: grid;
  place-items: center;
  cursor: pointer;
}

.confirm-modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(0, 0, 0, 0.54);
}

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

.confirm-box {
  width: min(340px, 100%);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  background: #17241d;
  color: #f8f1df;
  padding: 18px;
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.44);
}

.confirm-box h2 {
  margin: 0 0 8px;
  font-size: 1.08rem;
  line-height: 1.2;
}

.confirm-box p {
  margin: 0;
  color: rgba(248, 241, 223, 0.78);
  line-height: 1.35;
}

.confirm-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 18px;
}

.confirm-actions button {
  min-width: 76px;
  min-height: 36px;
  border: 0;
  border-radius: 6px;
  padding: 6px 12px;
  font-weight: 800;
  cursor: pointer;
}

.confirm-secondary {
  background: #f2f2f2;
  color: #111111;
}

.confirm-primary {
  background: var(--gold);
  color: #111111;
}

.confirm-primary:disabled {
  opacity: 0.55;
  cursor: wait;
}

.drag-ghost {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 20;
  pointer-events: none;
  width: var(--cw);
  height: var(--ch);
  filter: drop-shadow(0 18px 24px rgba(0, 0, 0, 0.38));
}

.drag-ghost .card {
  position: absolute;
  left: 0;
  cursor: grabbing;
}

.board.dealing .tableau .card {
  pointer-events: none;
}

.board.dealing .tableau .card:not(.deal-tableau-card) {
  opacity: 0;
}

.deal-tableau-card {
  animation: deal-to-place var(--deal-duration) var(--deal-delay) cubic-bezier(.22, .76, .24, 1) both;
  transform-origin: center center;
  will-change: transform;
  pointer-events: none;
}

.deal-reveal-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 8px;
  background:
    linear-gradient(135deg, transparent 43%, rgba(173, 216, 230, 0.8) 44% 46%, transparent 47%),
    linear-gradient(45deg, transparent 43%, rgba(173, 216, 230, 0.8) 44% 46%, transparent 47%),
    #00008b;
  animation: deal-face-reveal var(--deal-duration) var(--deal-delay) linear both;
}

@keyframes deal-to-place {
  0% {
    opacity: 0.98;
    transform: translate3d(var(--deal-x), var(--deal-y), 0) scale(0.96);
  }

  72% {
    opacity: 1;
    transform: translate3d(var(--deal-near-x), var(--deal-near-y), 0) scale(1.01);
  }

  100% {
    opacity: 1;
    transform: translate3d(0, 0, 0) scale(1);
  }
}

@keyframes deal-face-reveal {
  0%,
  62% {
    opacity: 1;
  }

  100% {
    opacity: 0;
  }
}

.victory-layer {
  position: fixed;
  inset: 0;
  z-index: 30;
  pointer-events: none;
  overflow: hidden;
}

.victory-card {
  position: fixed;
  left: 0;
  top: 0;
  will-change: transform;
  filter: drop-shadow(0 12px 14px rgba(0, 0, 0, 0.34));
}

.status {
  position: fixed;
  left: 8px;
  bottom: 8px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 8px;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.45);
}

@media (max-width: 620px) {
  :root {
    --viewport-w: 100dvw;
    --pad: 6px;
    --gap: 4px;
    --down: clamp(24px, 5.6vw, 32px);
  }
}

@media (max-width: 420px) {
  :root {
    --pad: 5px;
    --gap: 3px;
    --cw: calc((100dvw - (2 * var(--pad)) - (6 * var(--gap))) / 7);
    --down: clamp(22px, 5.8vw, 30px);
  }
}