/* ── Variables ─────────────────────────────────────────────────────────────── */
:root {
  --bg:       #0f1117;
  --surface:  #1a1d2e;
  --surface2: #232640;
  --border:   #2e3255;
  --text:     #e8eaf6;
  --muted:    #7b80a8;
  --accent:   #8b5cf6;
  --accent2:  #a78bfa;
  --red:      #cc2222;
  --green:    #3dc87a;
  --card-w:   72px;
  --card-h:   100px;
  --card-r:   8px;
}
body.light {
  --bg:       #eef0f7;
  --surface:  #ffffff;
  --surface2: #f4f5fb;
  --border:   #dde0ef;
  --text:     #1a1b2e;
  --muted:    #6b6d8e;
  --accent:   #6d28d9;
  --accent2:  #7c3aed;
  --red:      #bb1111;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background 0.3s, color 0.3s;
  overflow-x: hidden;
  overscroll-behavior: none; /* prevent pull-to-refresh and overscroll bounce */
}

/* ── Top bar ────────────────────────────────────────────────────────────────── */
#top-bar {
  position: fixed; top: 0; left: 0; right: 0;
  display: flex; align-items: center; gap: 8px;
  padding: 8px 14px;
  background: rgba(15,17,23,0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 200;
}
body.light #top-bar { background: rgba(45,106,79,0.9); }

#back-link {
  color: var(--muted); text-decoration: none;
  font-size: 13px; padding: 4px 8px;
  border-radius: 6px;
  transition: color .15s, background .15s;
}
#back-link:hover { color: var(--text); background: var(--surface2); }

#game-title {
  font-size: 15px; font-weight: 700; color: var(--text);
  margin-right: 4px;
}

#stats {
  display: flex; gap: 12px; margin-left: 4px;
}
#stats span {
  font-size: 12px; color: var(--muted);
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 6px; padding: 3px 8px;
  font-variant-numeric: tabular-nums;
}

.top-spacer { flex: 1; }

#draw-mode-select {
  font-family: inherit; font-size: 12px;
  background: var(--surface2); border: 1px solid var(--border);
  color: var(--text); border-radius: 6px; padding: 4px 8px;
  cursor: pointer;
}

#new-game-btn {
  background: var(--accent); color: #fff;
  border: none; border-radius: 6px;
  padding: 5px 12px; font-size: 12px; font-weight: 600;
  cursor: pointer; transition: opacity .15s;
}
#new-game-btn:hover { opacity: 0.85; }

#theme-toggle {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 6px; padding: 4px 8px; font-size: 15px;
  color: var(--text); cursor: pointer;
}

/* ── Game area ─────────────────────────────────────────────────────────────── */
#game-area {
  padding-top: 52px;
  padding-bottom: 24px;
  min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center;
  gap: 16px;
  user-select: none;
  touch-action: none; /* prevent browser scroll/zoom while dragging cards */
}

#top-row {
  display: flex; align-items: flex-start;
  gap: 8px;
  padding: 16px 12px 0;
  width: 100%;
  max-width: 580px;
}

#stock-waste {
  display: flex; gap: 8px; align-items: flex-start;
  flex-shrink: 0;
}

#stock, #waste {
  position: relative;
  width: var(--card-w);
  height: var(--card-h);
  flex-shrink: 0;
}

#waste {
  width: calc(var(--card-w) + 36px); /* room for draw-3 fan */
}

.row-spacer { flex: 1; min-width: 8px; }

#foundations {
  display: flex; gap: 8px; align-items: flex-start;
  flex-shrink: 0;
}

.foundation {
  position: relative;
  width: var(--card-w);
  height: var(--card-h);
  flex-shrink: 0;
}

/* ── Tableau ─────────────────────────────────────────────────────────────────── */
#tableau {
  display: flex; gap: 8px; align-items: flex-start;
  padding: 0 12px;
  width: 100%;
  max-width: 580px;
}

.tableau-col {
  position: relative;
  width: var(--card-w);
  min-height: var(--card-h);
  flex-shrink: 0;
}

/* ── Cards ────────────────────────────────────────────────────────────────── */
.card {
  position: absolute;
  width: var(--card-w);
  height: var(--card-h);
  background: #f7f5f0;
  border: 1px solid #c8c0b0;
  border-radius: var(--card-r);
  cursor: pointer;
  box-shadow: 0 2px 5px rgba(0,0,0,0.35);
  transition: transform .1s, box-shadow .1s;
  will-change: transform;
  -webkit-tap-highlight-color: transparent;
}
body.light .card { background: #fff; border-color: #bbb; }
/* Preserve blue gradient on card backs regardless of theme */
body.light .card.back { background: linear-gradient(145deg, #1e3a8a 0%, #2d55c8 50%, #1e3a8a 100%); border-color: #1a2f70; }

.card .corner {
  position: absolute;
  font-size: 13px;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  color: #1a1b2e;
}
.card.red .corner { color: var(--red); }
.card .corner.top { top: 5px; left: 5px; }
.card .corner.bot { bottom: 5px; right: 5px; transform: rotate(180deg); }

/* Center suit watermark — number cards */
.card .suit-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-size: 36px;
  opacity: 0.35;
  pointer-events: none;
}
.card .suit-center.ace {
  font-size: 48px;
  opacity: 0.72;
}
.card.red .suit-center { color: #cc0000; }

/* Face cards (J, Q, K) */
.card .face-art {
  position: absolute;
  top: 18px; left: 7px; right: 7px; bottom: 18px;
  border: 1.5px solid rgba(26,27,46,0.45);
  border-radius: 4px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 1px;
  background: rgba(26,27,46,0.03);
}
.card.red .face-art {
  border-color: rgba(180,30,30,0.45);
  background: rgba(180,30,30,0.03);
}
.face-icon { font-size: 24px; line-height: 1; }
.face-suit {
  font-size: 17px;
  font-weight: 900;
  line-height: 1;
  color: #1a1b2e;
  opacity: 0.75;
}
.card.red .face-suit { color: var(--red); }

/* Face-down / back */
.card.back {
  background: linear-gradient(145deg, #1e3a8a 0%, #2d55c8 50%, #1e3a8a 100%);
  border-color: #1a2f70;
  cursor: default;
}
.card.back::after {
  content: '';
  position: absolute;
  inset: 5px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 4px;
  background: repeating-linear-gradient(
    45deg,
    transparent 0px, transparent 4px,
    rgba(255,255,255,0.05) 4px, rgba(255,255,255,0.05) 5px
  );
}

/* Selected highlight */
.card.selected {
  box-shadow: 0 0 0 3px var(--accent2), 0 4px 16px rgba(139,92,246,0.5);
  transform: translateY(-5px);
  z-index: 50 !important;
}

/* Pile placeholders */
.pile-placeholder {
  position: absolute;
  top: 0; left: 0;
  width: var(--card-w);
  height: var(--card-h);
  border: 2px dashed var(--border);
  border-radius: var(--card-r);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  color: var(--border);
  transition: border-color .15s, color .15s;
}
.pile-placeholder.recycle {
  font-size: 26px; cursor: pointer;
  border-style: solid; border-color: var(--surface2);
  color: var(--muted);
}
.pile-placeholder.recycle:hover { border-color: var(--accent); color: var(--accent); }

/* Stock count badge */
.pile-count {
  position: absolute;
  bottom: 4px; right: 6px;
  font-size: 10px; color: rgba(255,255,255,0.7);
  pointer-events: none;
  z-index: 10;
}

/* ── Drag ghost ────────────────────────────────────────────────────────────── */
.drag-ghost {
  position: fixed;
  width: var(--card-w);
  pointer-events: none;
  z-index: 500;
  opacity: 0.92;
  filter: drop-shadow(0 8px 20px rgba(0,0,0,0.5));
}
.drag-ghost .card {
  position: absolute;
  left: 0;
}

/* ── Win canvas & overlay ──────────────────────────────────────────────────── */
#win-canvas {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 900;
}

#win-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  align-items: center; justify-content: center;
  flex-direction: column; gap: 16px;
  z-index: 950;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
}

.win-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 40px;
  text-align: center;
  display: flex; flex-direction: column; gap: 16px;
}
.win-box h2 { font-size: 2rem; font-weight: 800; }
.win-box .win-stats { color: var(--muted); font-size: 14px; }

/* Seed row */
.win-seed {
  font-size: 13px; color: var(--muted);
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.win-seed strong { color: var(--text); }
#copy-link-btn {
  font-family: inherit; font-size: 12px; font-weight: 600;
  background: var(--surface2); border: 1px solid var(--border);
  color: var(--text); border-radius: 6px; padding: 2px 8px; cursor: pointer;
}
#copy-link-btn:hover { border-color: var(--accent); }

/* Leaderboard inside win box */
.win-lb-title {
  font-size: 11px; font-weight: 700; color: var(--muted);
  text-transform: uppercase; letter-spacing: .05em;
  text-align: left; margin-bottom: 6px;
}
.win-lb-table { width: 100%; border-collapse: collapse; font-size: 13px; text-align: left; }
.win-lb-table td { padding: 3px 6px; }
.win-lb-table .lb-rank { color: var(--muted); width: 28px; }
.win-lb-table .lb-time { text-align: right; font-variant-numeric: tabular-nums; font-weight: 700; color: var(--accent2); }
.win-lb-table tr.me { background: rgba(139,92,246,0.12); border-radius: 4px; }
.win-lb-table tr.me td { color: var(--accent2); }
.win-login-hint { font-size: 12px; color: var(--muted); margin: 0; }

/* Win action buttons row */
.win-actions { display: flex; gap: 10px; justify-content: center; }
#replay-btn {
  background: var(--surface2); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 20px; font-size: 14px; font-weight: 700;
  cursor: pointer; transition: border-color .15s;
}
#replay-btn:hover { border-color: var(--accent); }

#play-again-btn {
  background: var(--accent); color: #fff;
  border: none; border-radius: 8px;
  padding: 10px 28px; font-size: 15px; font-weight: 700;
  cursor: pointer; transition: opacity .15s;
  font-family: inherit;
}
#play-again-btn:hover { opacity: 0.85; }

/* ── Auto-complete hint ─────────────────────────────────────────────────────── */
#autocomplete-btn {
  display: none;
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--green); color: #fff;
  border: none; border-radius: 8px;
  padding: 10px 24px; font-size: 14px; font-weight: 700;
  cursor: pointer; z-index: 300;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  font-family: inherit;
  animation: slideUp .3s ease;
}
@keyframes slideUp {
  from { opacity: 0; transform: translateX(-50%) translateY(16px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 580px) {
  :root {
    --card-w: 46px;
    --card-h: 64px;
    --card-r: 5px;
  }
  #top-row, #tableau { padding: 8px 6px 0; gap: 4px; }
  #tableau { gap: 4px; }
  #foundations { gap: 4px; }
  #stock-waste { gap: 4px; }
  #waste { width: calc(var(--card-w) + 24px); }
  .card .corner { font-size: 9px; }
  .card .suit-center { font-size: 22px; }
  .card .suit-center.ace { font-size: 28px; }
  .face-icon { font-size: 16px; }
  .face-suit { font-size: 12px; }
  .card .face-art { top: 16px; bottom: 16px; left: 5px; right: 5px; }
  #game-title { display: none; }
  #stats span { font-size: 11px; padding: 2px 6px; }
}