:root {
  --table-bg: linear-gradient(135deg, #2e7d32 0%, #388e3c 100%);
  --card-bg: #fff;
  --card-border: #bbb;
  --card-shadow: 0 2px 8px rgba(0,0,0,0.15);
  --card-width: 80px;
  --card-height: 120px;
  --card-radius: 10px;
  --card-margin: 12px;
  --foundation-highlight: #ffd600;
}
html, body {
  height: 100%;
}
body {
  background: var(--table-bg);
  min-height: 100vh;
}
.solitaire-wrap {
  width: 100vw;
  height: 100vh;
  min-height: 100vh;
  background: var(--table-bg);
  overflow: auto;
}
.solitaire-root {
  width: 100vw;
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 0 1rem 0;
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
}
.sol-row {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: flex-end;
  gap: var(--card-margin);
  margin-bottom: 2rem;
}
.sol-pile {
  min-width: var(--card-width);
  min-height: var(--card-height);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
}
.sol-pile.foundation.highlight {
  box-shadow: 0 0 0 4px var(--foundation-highlight) inset;
  border-radius: var(--card-radius);
}
.sol-card {
  width: var(--card-width);
  height: var(--card-height);
  background: var(--card-bg);
  border: 2px solid var(--card-border);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  position: absolute;
  left: 0;
  right: 0;
  margin: 0 auto;
  cursor: grab;
  user-select: none;
  transition: box-shadow 0.2s, transform 0.1s;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  font-family: 'Segoe UI', 'Arial', sans-serif;
  font-size: 1.1rem;
  z-index: 1;
}
.sol-card.face-down {
  background: repeating-linear-gradient(135deg, #90caf9 0 10px, #1976d2 10px 20px);
  border-color: #1976d2;
  color: transparent;
  cursor: pointer;
}
.sol-card.selected, .sol-card.dragging {
  box-shadow: 0 0 0 4px #ffd600, 0 2px 12px rgba(0,0,0,0.25);
  z-index: 10;
}
.sol-card .corner {
  font-size: 1.1rem;
  font-weight: bold;
  padding: 0.3rem 0.5rem;
}
.sol-card .suit {
  font-size: 1.5rem;
  text-align: center;
  margin: 0.2rem 0;
}
.sol-card.red {
  color: #d32f2f;
}
.sol-card.black {
  color: #222;
}
.sol-card.empty {
  background: transparent;
  border: 2px dashed #bbb;
  box-shadow: none;
  cursor: pointer;
}
.sol-btn-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  gap: 1rem;
}
.sol-btn-bar .btn {
  min-width: 110px;
}
.sol-stats {
  color: #fffde7;
  font-size: 1rem;
  margin-left: auto;
  margin-right: 0;
}
@media (max-width: 991.98px) {
  .solitaire-root {
    max-width: 100vw;
    padding: 1rem 0.25rem;
  }
  .sol-card {
    width: 60px;
    height: 90px;
    font-size: 0.95rem;
  }
  .sol-pile {
    min-width: 60px;
    min-height: 90px;
  }
}
@media (max-width: 575.98px) {
  .solitaire-root {
    padding: 0.5rem 0.1rem;
  }
  .sol-card {
    width: 44px;
    height: 66px;
    font-size: 0.8rem;
  }
  .sol-pile {
    min-width: 44px;
    min-height: 66px;
  }
}