:root {
  --bg: #0b0d17;
  --panel: rgba(255, 255, 255, 0.045);
  --border: rgba(255, 255, 255, 0.09);
  --text: #e8ecff;
  --muted: #8a91b5;
  --accent: #6c5ce7;
  --accent2: #00d2ff;
  --panel-w: 190px;
  --gap: clamp(8px, 1.3vw, 18px);
  --pad: clamp(8px, 1.3vw, 18px);
}

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

html { min-height: 100%; }

body {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  overflow-x: hidden;
  overscroll-behavior: none;
  -webkit-tap-highlight-color: transparent;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(1000px 600px at 15% 10%, rgba(108, 92, 231, 0.25), transparent 60%),
    radial-gradient(900px 500px at 85% 90%, rgba(0, 210, 255, 0.16), transparent 60%),
    var(--bg);
  z-index: -1;
}

/* ==========================================================================
   Rejilla principal.
   La variante activa la fija main.js en <html data-layout> + data-orient,
   de modo que el CSS nunca depende de combinar media queries complejas.
   wide      → 3 columnas (paneles | tablero | paneles)
   compact   → 1 columna  (paneles / tablero / botonera)
   compact+landscape → 3 columnas (paneles | tablero | botonera)
   ========================================================================== */
.game-wrapper {
  flex: 1 1 auto;
  width: 100%;
  max-width: 1180px;
  /* Tope duro al alto del viewport: obliga a que la fila 1fr sea de tamaño
     definido y los hijos (barra lateral, tablero) se ajusten en vez de
     desbordar la página. */
  max-height: 100vh;
  max-height: 100dvh;
  margin: 0 auto;
  min-height: 0;
  display: grid;
  grid-template-columns: var(--panel-w) minmax(0, 1fr) var(--panel-w);
  grid-template-rows: minmax(0, 1fr) 0;
  grid-template-areas:
    "left  stage right"
    "pad   pad   pad";
  column-gap: var(--gap);
  row-gap: 0;
  padding: var(--pad);
}

/* La fila de la botonera solo existe cuando hay teclado táctil */
html[data-input="touch"] .game-wrapper {
  grid-template-rows: minmax(0, 1fr) auto;
  row-gap: var(--gap);
}

.panel-left  { grid-area: left; }
.stage       { grid-area: stage; }
.panel-right { grid-area: right; }
.touch-pad   { grid-area: pad; }

html[data-layout="compact"] .game-wrapper {
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "left"
    "stage"
    "pad";
  column-gap: 8px;
  row-gap: 8px;
  padding: 8px 8px 0;
  max-width: 560px;
}

html[data-layout="compact"][data-orient="landscape"] .game-wrapper {
  grid-template-columns: 216px minmax(0, 1fr) auto;
  grid-template-rows: minmax(0, 1fr);
  grid-template-areas: "left stage pad";
  gap: 8px;
  padding: 8px;
  max-width: none;
}

/* ---------- Panels ---------- */
.panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: var(--panel-w);
  min-width: 0;
  min-height: 0;
}

.panel-right { display: flex; }
html[data-layout="compact"] .panel-right { display: none; }

.box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 14px;
  backdrop-filter: blur(8px);
  min-width: 0;
}

.box h2 {
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
  font-weight: 700;
}

.stat {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 6px;
  padding: 4px 0;
  font-size: 12px;
  color: var(--muted);
}

.stat b {
  font-size: 17px;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.stat.flash b { animation: pop .35s ease; color: var(--accent2); }

@keyframes pop {
  0% { transform: scale(1); }
  40% { transform: scale(1.35); }
  100% { transform: scale(1); }
}

.hold-area, .next-area { display: flex; justify-content: center; }

/* El canvas de los paneles lo dimensiona el CSS; main.js ajusta el buffer a la
   medida real, así que si la caja encoge o se estira la pieza no se deforma. */
.hold-area canvas, .next-area canvas { display: block; width: 100%; }
.hold-area canvas { aspect-ratio: 3 / 2; }
.next-area canvas { aspect-ratio: 3 / 5; }

/* La barra lateral nunca debe empujar la página: la caja "Siguiente" encoge
   (hasta un mínimo razonable) en vez de desbordar el alto del viewport. */
html[data-layout="wide"] .panel { overflow: hidden; }
html[data-layout="wide"] .box-next {
  flex: 0 1 auto;
  min-height: 92px;
  display: flex;
  flex-direction: column;
}
html[data-layout="wide"] .next-area { flex: 1 1 auto; min-height: 0; }

.keys { list-style: none; display: flex; flex-direction: column; gap: 7px; }

.keys li {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  color: var(--muted);
}

.keys li span { margin-left: auto; }

kbd {
  display: inline-block;
  min-width: 20px;
  padding: 2px 6px;
  font-size: 10.5px;
  font-family: inherit;
  font-weight: 700;
  text-align: center;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-bottom-width: 2px;
  border-radius: 5px;
}

/* ---------- Escenario / tablero ---------- */
.stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-width: 0;
  min-height: 0;
}

/* Slot flexible: cede al tablero todo el alto libre, nunca lo deforma */
.board-slot {
  flex: 1 1 auto;
  width: 100%;
  min-width: 0;
  min-height: 236px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.board-wrap {
  position: relative;
  width: fit-content;
  height: fit-content;
  flex: 0 0 auto;
  padding: 8px;
  border-radius: 18px;
  background: linear-gradient(160deg, rgba(108, 92, 231, 0.25), rgba(0, 210, 255, 0.12));
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
  /* --cell y --bh los define main.js al dimensionar el tablero */
  --cell: 30px;
  --bh: 600px;
}

#board {
  display: block;
  border-radius: 10px;
  background: #070910;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.07);
}

.controls-hint {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  justify-content: center;
  font-size: 11px;
  color: var(--muted);
  max-width: 340px;
  flex: 0 0 auto;
}

.controls-hint span { display: inline-flex; align-items: center; gap: 3px; }

/* ---------- Overlay (tipografía proporcional al alto real del tablero) -------- */
.overlay {
  position: absolute;
  inset: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(7, 9, 16, 0.88);
  backdrop-filter: blur(4px);
  transition: opacity .2s ease;
  overflow: hidden;
}

.overlay.hidden { opacity: 0; pointer-events: none; }

.overlay-card { text-align: center; padding: 4%; max-width: 100%; }

.overlay-card h1 {
  font-size: clamp(13px, calc(var(--bh) * 0.068), 40px);
  letter-spacing: clamp(1px, calc(var(--bh) * 0.011), 6px);
  background: linear-gradient(90deg, var(--accent2), var(--accent), #ff6ec7);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 0.5em;
  font-weight: 800;
}

.overlay-card p {
  color: var(--muted);
  font-size: clamp(9px, calc(var(--bh) * 0.022), 13px);
  margin-bottom: 1.2em;
  line-height: 1.5;
}

.overlay-card small { font-size: 0.82em; opacity: 0.8; }

.btn {
  padding: clamp(6px, calc(var(--bh) * 0.017), 10px) clamp(10px, calc(var(--bh) * 0.045), 26px);
  font-family: inherit;
  font-size: clamp(10px, calc(var(--bh) * 0.023), 14px);
  font-weight: 700;
  letter-spacing: 1px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #4834d4);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease;
  box-shadow: 0 6px 18px rgba(108, 92, 231, 0.45);
}

.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(108, 92, 231, 0.6); }
.btn:active { transform: translateY(0); }

/* ---------- Botonera táctil ---------- */
.touch-pad {
  display: none;
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
  gap: 6px;
  padding: 4px 0 calc(8px + env(safe-area-inset-bottom));
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

html[data-layout="compact"] .touch-pad,
html[data-input="touch"] .touch-pad { display: grid; }

.pad-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; }

.tbtn {
  -webkit-appearance: none;
  appearance: none;
  min-width: 0;
  min-height: clamp(38px, 5.4vh, 46px);
  padding: 8px 2px;
  font-family: inherit;
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.tbtn:active { background: rgba(108, 92, 231, 0.5); }
.tbtn-word { font-size: 12px; letter-spacing: 1px; }
.tbtn-accent {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #4834d4);
  border-color: transparent;
}

/* ---------- Variante compacta: paneles en fila y botoneraVisible ---------- */
html[data-layout="compact"] .panel-left {
  width: 100%;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 8px;
}

html[data-layout="compact"] .panel-left .box { padding: 7px 9px; }
html[data-layout="compact"] .panel-left .box h2 { display: none; }

/* Marcador: barra horizontal compacta */
html[data-layout="compact"] .box-stats {
  flex: 1 1 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 0 6px;
}
html[data-layout="compact"] .box-stats .stat {
  flex: 1 1 22%;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  padding: 2px 0;
  font-size: 9.5px;
  letter-spacing: .4px;
}
html[data-layout="compact"] .box-stats .stat b { font-size: 15px; }

/* Guardar (estrecho) + Siguiente (tira) */
html[data-layout="compact"] .box-hold { flex: 0 0 clamp(76px, 24%, 112px); }
html[data-layout="compact"] .box-next { flex: 1 1 0; min-width: 0; }
html[data-layout="compact"] .hold-area canvas { max-width: 92px; }
html[data-layout="compact"] .next-area canvas { aspect-ratio: 5 / 1; }
html[data-layout="compact"][data-orient="landscape"] .next-area canvas { aspect-ratio: 3 / 1; }

html[data-layout="compact"] .controls-hint { display: none; }
html[data-layout="compact"] .board-slot { min-height: 200px; }
html[data-layout="compact"][data-orient="landscape"] .board-slot { min-height: 120px; }
html[data-layout="compact"] .game-wrapper { padding-bottom: 0; }

/* ---------- Variante compacta en horizontal: botonera a la derecha ---------- */
html[data-layout="compact"][data-orient="landscape"] .panel-left {
  flex-direction: column;
  flex-wrap: nowrap;
  gap: 8px;
}
/* En columna "flex-basis: 100%" significaría 100% de alto: hay que anularlo */
html[data-layout="compact"][data-orient="landscape"] .box-stats,
html[data-layout="compact"][data-orient="landscape"] .box-hold,
html[data-layout="compact"][data-orient="landscape"] .box-next { flex: 0 0 auto; }
html[data-layout="compact"][data-orient="landscape"] .hold-area canvas { max-width: 118px; }
html[data-layout="compact"][data-orient="landscape"] .next-area canvas { aspect-ratio: 3 / 1; }

html[data-layout="compact"][data-orient="landscape"] .touch-pad {
  max-width: none;
  margin: 0;
  padding-bottom: 8px;
}
html[data-layout="compact"][data-orient="landscape"] .pad-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
html[data-layout="compact"][data-orient="landscape"] .tbtn { min-height: 36px; }
html[data-layout="compact"][data-orient="landscape"] .tbtn-word { font-size: 11px; }

/* ---------- Ventanas de escritorio bajas: paneles más compactos ---------- */
@media (max-height: 780px) and (min-width: 901px) and (pointer: fine) {
  :root { --panel-w: 168px; }
  .controls-hint { display: none; }
  .box { padding: 9px 11px; }
  .box h2 { margin-bottom: 7px; }
  .next-area canvas { aspect-ratio: 3 / 4.4; }
  .stat b { font-size: 15px; }
  .panel { gap: 10px; }
}

@media (max-height: 560px) and (min-width: 901px) and (pointer: fine) {
  .keys { display: none; }
  .next-area canvas { aspect-ratio: 3 / 3.4; }
}

/* ---------- Portátil táctil ancho: 3 columnas + botonera abajo ---------- */
html[data-layout="wide"][data-input="touch"] .panel { gap: 10px; }
html[data-layout="wide"][data-input="touch"] .box { padding: 9px 11px; }
html[data-layout="wide"][data-input="touch"] .box h2 { margin-bottom: 7px; }