:root {
  color-scheme: dark;
  --felt: #17603e;
  --felt-dark: #0d3c2e;
  --felt-light: #23724d;
  --ink: #f5f1e8;
  --muted: #c9d5ca;
  --line: rgba(255, 255, 255, 0.22);
  --card: #fffaf0;
  --card-ink: #1f2933;
  --red: #b51f2d;
  --black: #202834;
  --shadow: rgba(5, 16, 12, 0.42);
  --card-w: min(clamp(70px, 8.8vw, 104px), calc((100svw - 84px) / 7), calc((100svh - 112px) / 4.95));
  --card-h: calc(var(--card-w) * 1.451);
  --stack-gap: clamp(16px, calc(var(--card-w) * 0.32), 34px);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100svh;
  overflow: auto;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  background-image: url("./clouds.gif");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

button,
input {
  font: inherit;
}

button {
  min-height: clamp(32px, 5vw, 44px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: clamp(4px, 0.5vw, 8px);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.12);
  padding: clamp(8px, 1vw, 14px) clamp(12px, 2vw, 18px);
  font-size: clamp(0.85rem, 1.5vw, 1rem);
  cursor: pointer;
}

button:hover,
button:focus-visible {
  background: rgba(255, 255, 255, 0.2);
  outline: none;
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.app-shell {
  width: min(1460px, 100%);
  margin: 0 auto;
  padding: clamp(8px, 1.3vw, 14px);
}

.topbar {
  display: grid;
  grid-template-columns: minmax(150px, auto) minmax(220px, 1fr) auto auto;
  align-items: center;
  gap: 10px;
}

h1 {
  margin: 0;
  font-size: clamp(1.45rem, 3vw, 2.3rem);
  line-height: 1.05;
}

.topbar p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 8px;
}

.seed-form {
  display: flex;
  align-items: center;
  gap: 8px;
}

.seed-form label {
  color: var(--muted);
  font-size: 0.9rem;
}

.seed-form input {
  width: 138px;
  min-height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 6px;
  color: var(--ink);
  background: rgba(2, 12, 9, 0.32);
  padding: 0 10px;
}

.statusbar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 0;
  min-height: 36px;
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.statusbar span {
  white-space: nowrap;
}

#message {
  overflow: hidden;
  text-overflow: ellipsis;
}

.board {
  min-height: calc(100svh - 76px);
  padding-top: 6px;
  overflow-x: hidden;
}

.foundations {
  display: grid;
  grid-template-columns: repeat(4, var(--card-w));
  gap: clamp(8px, 1.2vw, 14px);
}

.topbar .foundations {
  --card-w: clamp(40px, 4vw, 56px);
  --card-h: calc(var(--card-w) * 1.451);
  justify-self: end;
  gap: 6px;
}

.tableau {
  display: grid;
  grid-template-columns: repeat(7, var(--card-w));
  justify-content: center;
  gap: clamp(4px, 0.65vw, 8px);
  align-items: start;
  overflow: visible;
  padding-bottom: 0;
}

.column {
  position: relative;
  min-width: var(--card-w);
  min-height: calc(var(--card-h) + 10 * var(--stack-gap));
  border-radius: 8px;
}

.slot,
.card {
  width: var(--card-w);
  height: var(--card-h);
  border-radius: 7px;
}

.slot {
  display: grid;
  place-items: center;
  border: 1px dashed rgba(255, 255, 255, 0.32);
  color: rgba(255, 255, 255, 0.5);
  background: rgba(0, 0, 0, 0.12);
}

.slot[role="button"] {
  cursor: pointer;
}

.slot[role="button"]:focus-visible {
  outline: 3px solid #f6c85f;
  outline-offset: 2px;
}

.foundation {
  position: relative;
}

.foundation .card {
  position: absolute;
  inset: 0;
}

.card {
  position: absolute;
  appearance: none;
  border: 0;
  color: var(--card-ink);
  background-color: transparent;
  background-repeat: no-repeat;
  box-shadow: 0 6px 14px var(--shadow);
  padding: 0;
  user-select: none;
  touch-action: none;
  cursor: pointer;
}

.card.face-down {
  box-shadow: 0 6px 14px var(--shadow);
  cursor: default;
}

.asset-card {
  image-rendering: auto;
}

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

.black {
  color: var(--black);
}

.selected {
  outline: 3px solid #f6c85f;
  outline-offset: 2px;
}

.hinted {
  outline: 3px solid #73d2de;
  outline-offset: 2px;
}

.drop-target {
  box-shadow: inset 0 0 0 3px rgba(246, 200, 95, 0.85);
}

.dragging-source {
  opacity: 0.18;
}

.drag-stack {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 1000;
  width: var(--card-w);
  pointer-events: none;
  will-change: transform;
}

.drag-stack .card {
  left: 0;
  filter: drop-shadow(0 12px 18px rgba(0, 0, 0, 0.35));
}

.column.drag-over .slot {
  border-color: #f6c85f;
  box-shadow: inset 0 0 0 3px rgba(246, 200, 95, 0.85);
}

.foundation.drag-over {
  border-color: #f6c85f;
  box-shadow: inset 0 0 0 3px rgba(246, 200, 95, 0.85);
}

.auto-float-card {
  position: fixed;
  z-index: 1100;
  pointer-events: none;
  transition: transform 220ms ease-in-out;
  will-change: transform;
}

@media (max-width: 760px) {
  .app-shell {
    padding: 12px;
  }

  .topbar {
    grid-template-columns: 1fr auto;
    align-items: flex-start;
  }

  .brand {
    min-width: 0;
  }

  .topbar .foundations {
    grid-row: span 2;
  }

  .toolbar,
  .seed-form {
    justify-content: flex-start;
    width: 100%;
  }

  .seed-form input {
    flex: 1;
    min-width: 96px;
  }

  .statusbar {
    grid-column: 1 / -1;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 8px 12px;
  }

  #message {
    width: 100%;
    white-space: normal;
  }

  .toolbar {
    grid-column: 1 / -1;
  }
}