/* ---- Page head ---- */
.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.page-head h1 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 700;
  font-size: clamp(28px, 4.4vw, 40px);
  letter-spacing: -0.02em;
  margin: 0;
  line-height: 1.05;
}
.page-head .sub {
  color: var(--ink-soft);
  margin: 6px 0 0;
  font-size: 14px;
  min-height: 1.4em;
}
.head-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.diff-select {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 4px 8px 4px 10px;
  box-shadow: var(--shadow);
}
.diff-select .diff-label {
  font: 600 12px 'Inter', sans-serif;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}
.diff-select select {
  font: 600 13px 'Inter', sans-serif;
  color: var(--ink);
  background: transparent;
  border: 0;
  padding: 6px 4px;
  cursor: pointer;
  outline: none;
}

/* ---- Play surface ---- */
.play {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  --card-w: clamp(48px, 7.2vw, 78px);
  --card-h: calc(var(--card-w) * 1.4);
  --card-radius: 8px;
  --stack-step: calc(var(--card-h) * 0.26);
  --stack-step-down: calc(var(--card-h) * 0.14);
  --col-gap: clamp(4px, 0.9vw, 12px);
}

/* ---- Top row: foundations on left, stock on right ---- */
.top-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.foundations {
  display: grid;
  grid-template-columns: repeat(8, calc(var(--card-w) * 0.55));
  gap: 4px;
}
.foundation-slot {
  width: calc(var(--card-w) * 0.55);
  height: calc(var(--card-h) * 0.55);
  border: 1.5px dashed #cdbf9f;
  border-radius: 6px;
  background: rgba(214, 200, 168, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.foundation-slot.is-filled {
  border-style: solid;
  border-color: #14253d;
  background: var(--paper);
}
.foundation-slot .pile-glyph {
  font-family: 'Fraunces', Georgia, serif;
  font-size: calc(var(--card-w) * 0.32);
  color: rgba(28, 42, 58, 0.18);
  user-select: none;
}
.foundation-mini {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 700;
  font-size: calc(var(--card-w) * 0.32);
  line-height: 1;
}
.foundation-mini[data-color="red"] { color: var(--danger); }
.foundation-mini[data-color="black"] { color: var(--ink); }

.stock-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}
.pile.stock {
  width: var(--card-w);
  height: var(--card-h);
  border: 2px dashed #cdbf9f;
  border-radius: var(--card-radius);
  background: rgba(214, 200, 168, 0.18);
  position: relative;
  cursor: pointer;
}
.stock.has-cards { background: transparent; border: none; }
.stock .stock-stack {
  position: absolute;
  inset: 0;
  border-radius: var(--card-radius);
  background:
    repeating-linear-gradient(45deg,
      #1f3a5f 0,
      #1f3a5f 6px,
      #2d5a8c 6px,
      #2d5a8c 12px);
  border: 1.5px solid #14253d;
  box-shadow:
    inset 0 0 0 3px var(--paper),
    inset 0 0 0 4.5px #14253d,
    0 1px 0 rgba(0,0,0,0.08),
    0 6px 14px -10px rgba(31,58,95,0.5);
  cursor: pointer;
}
.stock .stock-count {
  position: absolute;
  bottom: 6px;
  right: 8px;
  font: 700 11px 'Inter', sans-serif;
  color: var(--paper);
  background: rgba(20, 37, 61, 0.85);
  padding: 2px 7px;
  border-radius: 999px;
  pointer-events: none;
}
.stock.is-empty::before {
  content: '·';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: calc(var(--card-w) * 0.55);
  color: rgba(28, 42, 58, 0.25);
  pointer-events: none;
}

/* ---- Tableau ---- */
.tableau-scroll {
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
  margin: 0 -18px;
  padding: 0 18px 8px;
}
.tableau-scroll::-webkit-scrollbar { height: 6px; }
.tableau-scroll::-webkit-scrollbar-thumb { background: var(--line); border-radius: 999px; }
.tableau {
  display: grid;
  grid-template-columns: repeat(10, var(--card-w));
  gap: var(--col-gap);
  min-width: max-content;
  min-height: calc(var(--card-h) + var(--stack-step) * 20);
}
.col {
  position: relative;
  width: var(--card-w);
  min-height: var(--card-h);
  /* Provide a hit area for empty columns */
}
.col.is-empty::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: var(--card-w);
  height: var(--card-h);
  border: 2px dashed #cdbf9f;
  border-radius: var(--card-radius);
  background: rgba(214, 200, 168, 0.18);
  pointer-events: none;
}
.col.is-drop-target::before {
  border-color: var(--accent);
  background: rgba(244, 227, 178, 0.5);
}

/* ---- Card ---- */
.card {
  position: absolute;
  left: 0;
  top: 0;
  width: var(--card-w);
  height: var(--card-h);
  background: var(--paper);
  border: 1.5px solid #14253d;
  border-radius: var(--card-radius);
  box-shadow:
    0 1px 0 rgba(0,0,0,0.05),
    0 4px 10px -6px rgba(31,58,95,0.4);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 5px 6px;
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 700;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  transition: transform 140ms ease, box-shadow 180ms ease;
}
.card.face-down {
  background:
    repeating-linear-gradient(45deg,
      #1f3a5f 0,
      #1f3a5f 6px,
      #2d5a8c 6px,
      #2d5a8c 12px);
  box-shadow:
    inset 0 0 0 3px var(--paper),
    inset 0 0 0 4.5px #14253d,
    0 1px 0 rgba(0,0,0,0.05),
    0 4px 10px -6px rgba(31,58,95,0.4);
  cursor: default;
}
.card.face-down .face-content { display: none; }

.card .face-content {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  width: 100%;
}
.card .rank-row {
  display: flex;
  align-items: center;
  gap: 2px;
  line-height: 1;
}
.card .rank {
  font-size: calc(var(--card-w) * 0.28);
  letter-spacing: -0.02em;
}
.card .suit {
  font-size: calc(var(--card-w) * 0.26);
  line-height: 1;
}
.card .rank-row.bottom {
  transform: rotate(180deg);
  align-self: flex-end;
}
.card .big-suit {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: calc(var(--card-w) * 0.62);
  line-height: 1;
  margin: 0;
  opacity: 0.92;
}
.card[data-color="red"] { color: var(--danger); }
.card[data-color="black"] { color: var(--ink); }

.card.is-selected {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  transform: translateY(-3px);
  box-shadow:
    0 1px 0 rgba(0,0,0,0.05),
    0 12px 22px -8px rgba(31,58,95,0.75);
  animation: sp-selected-glow 1400ms ease-in-out infinite alternate;
  z-index: 5;
}
@keyframes sp-selected-glow {
  from { box-shadow: 0 1px 0 rgba(0,0,0,0.05), 0 12px 22px -8px rgba(31,58,95,0.75); }
  to   { box-shadow: 0 1px 0 rgba(0,0,0,0.05), 0 12px 22px -8px rgba(31,58,95,0.75), 0 0 0 2px rgba(31,58,95,0.35); }
}

/* Suit-cleared celebration — the whole suit briefly glows before removal */
@keyframes sp-suit-cleared {
  0%   { filter: drop-shadow(0 0 0 rgba(213, 192, 125, 0)); transform: translateY(0); }
  50%  { filter: drop-shadow(0 0 12px rgba(213, 192, 125, 0.9)); transform: translateY(-4px); }
  100% { filter: drop-shadow(0 0 0 rgba(213, 192, 125, 0)); transform: translateY(0); }
}
.card.is-completing {
  animation: sp-suit-cleared 700ms ease-out;
}

@media (prefers-reduced-motion: reduce) {
  .card.is-selected, .card.is-completing { animation: none; transform: none; }
}
.card.is-hint {
  animation: hint-pulse 800ms ease-in-out;
}
.card.is-hint-dest {
  animation: hint-pulse 800ms ease-in-out 80ms;
}
@keyframes hint-pulse {
  0%, 100% { transform: translateY(0); box-shadow: 0 1px 0 rgba(0,0,0,0.05), 0 4px 10px -6px rgba(31,58,95,0.4); }
  50% { transform: translateY(-5px); box-shadow: 0 8px 22px -8px rgba(31,58,95,0.55); }
}
.card:hover:not(.face-down) { transform: translateY(-2px); }

/* ---- Win overlay ---- */
.win-overlay {
  position: fixed;
  inset: 0;
  background: rgba(28, 42, 58, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 20px;
}
.win-overlay[hidden] { display: none; }
.win-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 30px;
  text-align: center;
  box-shadow: var(--shadow-lift);
  max-width: 360px;
}
.win-card h2 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 700;
  font-size: 30px;
  margin: 0 0 6px;
}
.win-card p { color: var(--ink-soft); margin: 0 0 18px; }

/* ---- Help ---- */
.aside-info { margin-top: 22px; }
.aside-info details {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 16px;
  box-shadow: var(--shadow);
}
.aside-info summary {
  cursor: pointer;
  font: 700 14px 'Inter', sans-serif;
  color: var(--ink);
}
.aside-info .help-body {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.55;
}
.aside-info .help-body p { margin: 0 0 8px; }
.aside-info .help-body ul { margin: 0; padding-left: 18px; }
.aside-info .help-body li { margin: 4px 0; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .play {
    padding: 12px;
    --card-w: clamp(46px, 8.6vw, 64px);
  }
}
@media (max-width: 720px) {
  .play {
    --card-w: 56px;
    --stack-step: calc(var(--card-h) * 0.28);
  }
  .tableau {
    /* On phones, allow horizontal scroll; columns keep a comfortable card size */
    min-width: max-content;
  }
  .head-actions .btn { padding: 9px 11px; font-size: 13px; }
}
@media (max-width: 460px) {
  .play {
    --card-w: 50px;
    padding: 10px;
  }
  .foundations {
    grid-template-columns: repeat(8, calc(var(--card-w) * 0.5));
  }
  .foundation-slot {
    width: calc(var(--card-w) * 0.5);
    height: calc(var(--card-h) * 0.5);
  }
}

/* ---- Fullscreen tweaks ---- */
body[data-fullscreen="true"] .play {
  --card-w: clamp(52px, 6.2vw, 86px);
}
body[data-fullscreen="true"] .tableau {
  min-height: calc(100vh - 220px);
}