*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
[hidden] { display: none !important; }

:root {
  --bg: #f5f0e8;
  --bg-warm: #ede7db;
  --ink: #2c2826;
  --ink-light: #8a8279;
  --ink-muted: #b8b0a4;
  --accent: #c45d3e;
  --accent-hover: #a84a2f;
  --grid-line: #938f8b;
  --grid-thick: #2c2826;
  --cell-bg: #fff;
  --felt: #ede7db;
  --slot: #ddd5c7;
  --card: #fffdf8;
  --card-edge: #cfc6b8;
  --card-black: #2c2826;
  --card-red: #c4453e;
  --back: #c45d3e;
  --back-line: rgba(255, 255, 255, 0.22);
  --hint: #e0a52c;
  --radius: 6px;
}

html.dark {
  --bg: #1a1714;
  --bg-warm: #222019;
  --ink: #e8e2d8;
  --ink-light: #8a8279;
  --ink-muted: #5a544e;
  --accent: #d4694a;
  --accent-hover: #b8533a;
  --grid-line: #6b6560;
  --grid-thick: #9e9890;
  --cell-bg: #252220;
  --felt: #201d1a;
  --slot: #2e2a26;
  --card: #e4ddd1;
  --card-edge: #1a1714;
  --card-black: #1f1c1a;
  --card-red: #b23a30;
  --back: #a8523a;
  --back-line: rgba(255, 255, 255, 0.14);
}

html { background: var(--bg); overscroll-behavior-y: none; }

body {
  font-family: 'DM Mono', ui-monospace, Menlo, Consolas, monospace;
  background: var(--bg);
  color: var(--ink);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  -webkit-tap-highlight-color: transparent;
  overflow-x: hidden;
  overscroll-behavior-y: none;
}

/* ── Top bar ── */
.top-bar {
  width: 100%;
  max-width: 760px;
  padding: 0.75rem 1rem 0.25rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

h1 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
}
h1 span { color: var(--accent); }

.timer-info { display: flex; gap: 0.75rem; align-items: center; }

.icon-btn {
  border: none;
  background: none;
  padding: 0.35rem;
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  color: var(--ink-light);
}
.icon-btn:hover { color: var(--ink); border: none; }

/* ── Top controls ── */
.top-controls {
  width: 100%;
  max-width: 760px;
  padding: 0.25rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.controls-row { display: flex; gap: 0.5rem; align-items: center; }

.controls-row input {
  font-family: inherit;
  font-size: 0.85rem;
  padding: 0.45rem 0.65rem;
  border: 1.5px solid var(--grid-line);
  border-radius: var(--radius);
  background: var(--cell-bg);
  color: var(--ink);
  min-width: 0;
  flex: 1;
  outline: none;
  transition: border-color 0.15s;
}
.controls-row input:focus { border-color: var(--accent); }
.controls-row input::placeholder { color: var(--ink-muted); }

select, button {
  font-family: inherit;
  font-size: 0.85rem;
  padding: 0.45rem 0.65rem;
  border: 1.5px solid var(--grid-line);
  border-radius: var(--radius);
  background: var(--cell-bg);
  color: var(--ink);
  cursor: pointer;
  transition: all 0.15s;
}
button:hover { border-color: var(--accent); color: var(--accent); }
button:active { transform: scale(0.97); }
button:disabled { opacity: 0.4; pointer-events: none; }
.btn-accent { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-accent:hover { background: var(--accent-hover); color: #fff; border-color: var(--accent-hover); }

.seed-display {
  text-align: center;
  font-size: 0.7rem;
  color: var(--ink-muted);
}
.seed-display code {
  background: var(--bg-warm);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  user-select: all;
}

/* ── Status bar: moves, actions, timer ── */
.status-bar {
  width: 100%;
  max-width: 760px;
  padding: 0.5rem 1rem 0.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
}
.counter {
  font-size: 0.95rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  min-width: 5.5rem;
}
#timerDisplay { text-align: right; }
.actions { display: flex; gap: 0.5rem; }
.actions button { padding: 0.35rem 0.75rem; }

/* ── Board ── */
.board-wrap {
  width: 100%;
  max-width: 760px;
  padding: 0.5rem 1rem 1rem;
}

.board {
  position: relative;
  width: 100%;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  --cw: 80px;
  --ch: 112px;
}

.slot, .card {
  position: absolute;
  top: 0;
  left: 0;
  width: var(--cw);
  height: var(--ch);
  border-radius: calc(var(--cw) * 0.09);
}

.slot {
  border: 1.5px dashed var(--ink-muted);
  background: var(--felt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Fraunces', Georgia, serif;
  font-size: calc(var(--cw) * 0.4);
  color: var(--ink-muted);
}
.slot.stock { cursor: pointer; border-style: solid; }
.slot.stock.empty-all { cursor: default; opacity: 0.5; }

.card {
  background: var(--card);
  border: 1px solid var(--card-edge);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
  transition: transform 0.2s cubic-bezier(.2, .8, .3, 1), box-shadow 0.15s;
  color: var(--card-black);
  will-change: transform;
}
.card.red { color: var(--card-red); }
.card.up { cursor: grab; }
.card.dragging {
  transition: none;
  cursor: grabbing;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.28);
}
.board.no-anim .card { transition: none; }

.card .face, .card .back { position: absolute; inset: 0; border-radius: inherit; }
.card:not(.up) .face, .card.up .back { display: none; }

.card .back {
  inset: 2px;
  background:
    repeating-linear-gradient(45deg, var(--back-line) 0 2px, transparent 2px 7px),
    repeating-linear-gradient(-45deg, var(--back-line) 0 2px, transparent 2px 7px),
    var(--back);
  border: 1.5px solid rgba(255, 255, 255, 0.35);
}

.corner {
  position: absolute;
  top: 3%;
  left: 7%;
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 700;
  font-size: calc(var(--cw) * 0.27);
  line-height: 1;
  letter-spacing: -0.04em;
  white-space: nowrap;
}
.corner i { font-style: normal; font-size: 0.9em; margin-left: 0.04em; }
.corner.br { top: auto; left: auto; bottom: 3%; right: 7%; transform: rotate(180deg); }

.pip {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 18%;
  font-size: calc(var(--cw) * 0.5);
  line-height: 1;
}
.pip.court {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 700;
  font-size: calc(var(--cw) * 0.55);
}
.pip.court i { font-style: normal; font-size: 0.5em; margin-left: 0.05em; }

.card.hint, .slot.hint { animation: hint-glow 1.2s ease; }
@keyframes hint-glow {
  0%, 100% { box-shadow: 0 1px 2px rgba(0, 0, 0, 0.18); }
  20%, 70% { box-shadow: 0 0 0 3px var(--hint), 0 0 14px var(--hint); }
}

/* ── Win banner ── */
.win-banner {
  position: absolute;
  left: 50%;
  top: 45%;
  transform: translate(-50%, -50%);
  z-index: 500;
  padding: 1rem 1.75rem;
  text-align: center;
  background: var(--bg);
  border: 1.5px solid var(--grid-thick);
  border-radius: var(--radius);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
  font-family: 'Fraunces', Georgia, serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
  animation: pop 0.4s ease;
}
.win-banner small {
  display: block;
  margin-top: 0.25rem;
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--ink-light);
}

@keyframes pop {
  0% { transform: translate(-50%, -50%) scale(0.8); opacity: 0; }
  60% { transform: translate(-50%, -50%) scale(1.05); }
  100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
}

.help { font-size: 0.68rem; color: var(--ink-muted); text-align: center; padding: 0 1rem 1rem; }
kbd { font-family: inherit; border: 1px solid var(--ink-muted); border-radius: 3px; padding: 0 0.25rem; }

#confetti-canvas { position: fixed; top: 0; left: 0; pointer-events: none; z-index: 999; }

/* ── Mobile ── */
@media (max-width: 420px) {
  h1 { font-size: 1.2rem; }
  .top-bar { padding: 0.5rem 0.75rem 0.15rem; }
  .top-controls, .status-bar { padding-left: 0.75rem; padding-right: 0.75rem; }
  .board-wrap { padding: 0.5rem 0.5rem 1rem; }
  .counter { font-size: 0.8rem; min-width: 4.5rem; }
  .card { border-radius: 4px; }
}

@media (min-width: 700px) {
  .top-bar { padding: 1.5rem 1rem 0.5rem; }
  h1 { font-size: 1.6rem; }
}

@media (hover: none) { .help { display: none; } }