:root {
  --bg: #030312;
  --panel: #0f0f2d;
  --grid: #1e1e4d;
  --accent: #22d3ee;
  --locked: #64648c;
  --text: #e8eaf6;
  --muted: #94a3b8;
  --danger: #f43f5e;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  height: 100%;
  overflow: hidden;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
}

body {
  display: flex;
  flex-direction: column;
}

.fx {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  width: 100vw;
  height: 100vh;
  display: block;
}

.bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--panel);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  z-index: 20;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 11px;
  color: var(--muted);
}

.stat .val {
  font-size: 17px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.4px;
  font-variant-numeric: tabular-nums;
}

.right {
  display: flex;
  gap: 8px;
}

.icb {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(15, 15, 45, 0.6);
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
  display: grid;
  place-items: center;
}

.icb:active {
  transform: scale(0.92);
  background: var(--accent);
  color: #000;
}

.stage {
  flex: 1;
  position: relative;
  z-index: 10;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 12px;
}

#grid {
  position: relative;
  background: var(--grid);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.6), inset 0 0 20px rgba(255, 255, 255, 0.02);
  overflow: hidden;
  touch-action: none;
}

.cell {
  position: absolute;
  width: var(--s, 64px);
  height: var(--s, 64px);
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.03);
  display: grid;
  place-items: center;
  will-change: left, top;
  transition: left 0.15s ease-out, top 0.15s ease-out;
}

.cell.locked {
  background: rgba(100, 100, 140, 0.2);
  border-style: dashed;
  border-color: var(--locked);
}

.cell.locked .tile {
  opacity: 0.45;
}

.tile {
  width: 76%;
  height: 76%;
  border-radius: 8px;
  background: var(--color, var(--accent));
  color: #000;
  display: grid;
  place-items: center;
  font-weight: 900;
  font-size: clamp(14px, 3vw, 22px);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.55), 0 0 14px var(--color);
  filter: drop-shadow(0 0 10px var(--color));
}

.cell.sel .tile {
  transform: scale(1.1);
  box-shadow: 0 0 0 3px var(--accent), 0 0 24px var(--accent);
}

.cell.new .tile {
  animation: pop 0.45s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}

.cell.clear {
  animation: clearIt 0.18s ease forwards;
}

@keyframes pop {
  0% { transform: scale(0); }
  70% { transform: scale(1.18); }
  100% { transform: scale(1); }
}

@keyframes clearIt {
  to { transform: scale(0); opacity: 0; }
}

.combo {
  position: fixed;
  left: 50%;
  top: 20%;
  transform: translateX(-50%);
  font-size: 30px;
  font-weight: 900;
  color: var(--accent);
  text-shadow: 0 0 20px var(--accent);
  opacity: 0;
  transform: translateX(-50%) scale(0.8);
  transition: opacity 0.2s, transform 0.2s;
  pointer-events: none;
  z-index: 40;
  letter-spacing: 2px;
}

#toast {
  position: fixed;
  left: 50%;
  top: 12%;
  transform: translateX(-50%);
  background: rgba(15, 15, 45, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--accent);
  padding: 6px 14px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 800;
  opacity: 0;
  pointer-events: none;
  z-index: 45;
  transition: opacity 0.2s;
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.25);
}
#toast.show { opacity: 1; }

/* Overlays */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(3, 3, 18, 0.72);
  backdrop-filter: blur(6px);
  z-index: 100;
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}

.overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.card {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px;
  padding: 26px 22px;
  width: min(430px, 92vw);
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.75);
  position: relative;
  animation: cardIn 0.35s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(24px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.logo {
  font-size: 30px;
  font-weight: 900;
  letter-spacing: -0.5px;
  text-align: center;
  margin-bottom: 6px;
}

.logo span { color: var(--accent); }

.tagline {
  text-align: center;
  color: var(--accent);
  font-weight: 700;
  font-size: 14px;
  margin: 6px 0 14px;
}

.small {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
  margin-bottom: 16px;
}

.buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.buttons2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 8px;
}

.btn {
  border: 0;
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 800;
  color: #020617;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 18px var(--accent);
}

.btn:active { transform: scale(0.95); }

.btn.ghost {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: none;
}

.btn.big { padding: 16px; font-size: 17px; }
.btn.full { width: 100%; }

.best {
  margin-top: 14px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}
.best span { color: var(--accent); font-weight: 800; }

/* Cómo jugar */
.steps { display: flex; flex-direction: column; gap: 10px; margin-bottom: 14px; }
.step { display: flex; gap: 10px; font-size: 13.5px; color: var(--text); line-height: 1.5; }
.step b { color: var(--accent); }

/* Récords */
.leaders { display: flex; flex-direction: column; gap: 6px; margin-bottom: 10px; }
.leader-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 7px 10px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 14px;
}
.leader-row .pos { color: var(--muted); font-size: 12px; font-weight: 700; }
.leader-row .name { flex: 1; text-align: center; }
.leader-row .score { font-variant-numeric: tabular-nums; font-weight: 800; color: var(--accent); }

/* Fin de partida */
.go-stats {
  display: flex;
  justify-content: space-around;
  gap: 10px;
  margin: 14px 0;
  padding: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
}
.go-stat { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.go-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }
.go-val { font-size: 20px; font-weight: 800; color: var(--text); }

.continue {
  margin: 12px 0;
  padding: 12px;
  background: rgba(244, 63, 94, 0.08);
  border: 1px solid rgba(244, 63, 94, 0.2);
  border-radius: 12px;
}
.continue-text { font-size: 12px; color: var(--muted); text-align: center; margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.5px; }
.continue-row { display: flex; gap: 8px; justify-content: center; }

.save-name {
  margin: 10px 0;
  text-align: center;
}
.save-name input {
  width: min(220px, 80%);
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-size: 15px;
  text-align: center;
}

/* Tienda */
.shop-hint {
  font-size: 12.5px;
  color: var(--muted);
  text-align: center;
  margin-bottom: 12px;
}
.shop-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; margin-bottom: 12px; }
.shop-card {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.02);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.shop-card.owned { border-color: rgba(34, 211, 238, 0.35); background: rgba(34, 211, 238, 0.06); }
.shop-card.equipped { border-color: var(--accent); box-shadow: 0 0 20px rgba(34, 211, 238, 0.25); }
.shop-swatch {
  width: 52px; height: 52px; border-radius: 10px; border: 2px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 14px var(--accent);
}
.shop-info { text-align: center; line-height: 1.2; }
.shop-info strong { display: block; font-size: 15px; font-weight: 800; color: var(--text); }
.shop-price { font-size: 12px; color: var(--muted); margin-top: 2px; }
.shop-card.owned .shop-price { color: var(--accent); font-weight: 700; }
.shop-btn {
  width: 100%;
  border: 0;
  border-radius: 8px;
  padding: 7px;
  font-size: 12.5px;
  font-weight: 800;
  cursor: pointer;
  background: var(--accent);
  color: #010409;
}
.shop-btn:active { transform: scale(0.96); }

.ad-card { text-align: center; }
.ad-body { color: var(--muted); font-size: 14px; line-height: 1.6; margin-bottom: 14px; }

/* Utilidades */
.hidden { display: none !important; }