* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: #05070a;
  color: #9fb0be;
  font-family: "Segoe UI", system-ui, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  overflow: hidden;
}

/* Halo frío detrás del marco: da la sensación de estar mirando por un visor */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(40, 90, 110, 0.16), transparent 62%);
  pointer-events: none;
}

#marco {
  position: relative;
  border: 2px solid #1e2c36;
  border-radius: 3px;
  box-shadow: 0 0 0 1px #0a1016, 0 0 60px rgba(30, 120, 140, 0.22);
  line-height: 0;
  background: #000;
}

#pantalla {
  display: block;
  /* El canvas es de 1200x672 y se muestra a la mitad o menos: el navegador lo
     baja de escala con filtrado, que es justo lo que suaviza las curvas. */
  width: min(96vw, calc(88vh * 600 / 336));
  height: auto;
}

#ayuda {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.2px;
  opacity: 0.7;
  text-align: center;
  padding: 0 12px;
  max-width: 900px;
  line-height: 1.7;
}

#ayuda b {
  color: #ffcf5a;
  font-weight: 600;
}

#ayuda .alt {
  display: inline-block;
  margin-top: 4px;
  opacity: 0.75;
  font-size: 11px;
}

/* ============================================================
   Controles táctiles — solo aparecen en dispositivos con dedo.
   Van encima del canvas, en posición fija, para que el juego no
   tenga que saber nada de layout.
   ============================================================ */

#controles { display: none; }

body.tactil {
  gap: 0;
  padding: 0;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

body.tactil #ayuda { display: none; }

body.tactil #marco {
  border: none;
  box-shadow: none;
  border-radius: 0;
}

body.tactil #pantalla {
  width: 100vw;
  max-height: 100vh;
  object-fit: contain;
}

body.tactil #controles {
  display: block;
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 10;
}

#controles .grupo { position: absolute; pointer-events: none; }

#controles .izq {
  left: max(12px, env(safe-area-inset-left));
  bottom: max(14px, env(safe-area-inset-bottom));
  width: 168px;
  height: 168px;
}

#controles .der {
  right: max(12px, env(safe-area-inset-right));
  bottom: max(14px, env(safe-area-inset-bottom));
  width: 236px;
  height: 176px;
}

#controles .sup {
  right: max(12px, env(safe-area-inset-right));
  top: max(10px, env(safe-area-inset-top));
}

.tb {
  position: absolute;
  pointer-events: auto;
  border: 1px solid rgba(180, 210, 230, 0.35);
  background: rgba(10, 18, 26, 0.42);
  color: #cfe0ec;
  font-family: "Consolas", "Courier New", monospace;
  font-size: 15px;
  font-weight: 600;
  border-radius: 12px;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(2px);
  transition: background 60ms linear, transform 60ms linear;
}

.tb.apretado {
  background: rgba(90, 190, 210, 0.45);
  border-color: rgba(220, 245, 255, 0.8);
  transform: scale(0.94);
}

.tb.grande { width: 78px; height: 78px; font-size: 13px; }
.tb.chico { width: 48px; height: 48px; font-size: 11px; }

/* Cruceta */
.p-izq    { left: 0;    bottom: 56px; }
.p-der    { left: 112px; bottom: 56px; }
.p-arriba { left: 56px; bottom: 112px; }
.p-abajo  { left: 56px; bottom: 0; }

/* Acciones */
.p-salto   { right: 0;    bottom: 6px;  background: rgba(30, 80, 60, 0.45); }
.p-disparo { right: 84px; bottom: 34px; background: rgba(90, 40, 30, 0.45); }
.p-lento   { right: 6px;  bottom: 92px; }
.p-turbo   { right: 60px; bottom: 108px; }
.p-correr  { right: 118px; bottom: 118px; }
.p-granada { right: 172px; bottom: 30px; background: rgba(90, 60, 25, 0.45); }
.p-cambiar { right: 172px; bottom: 86px; }

/* Superiores */
.p-ok    { position: relative; width: 52px; height: 40px; font-size: 12px; }
.p-pausa { position: relative; width: 44px; height: 40px; margin-left: 8px; display: inline-flex; }
#controles .sup { display: flex; }

/* Aviso de rotar: solo en vertical */
#rotar { display: none; }

@media (orientation: portrait) {
  body.tactil #rotar {
    display: flex;
    position: fixed;
    inset: 0;
    z-index: 20;
    align-items: center;
    justify-content: center;
    background: rgba(3, 6, 9, 0.92);
    color: #ffcf5a;
    font-family: "Consolas", "Courier New", monospace;
    font-size: 18px;
    letter-spacing: 1px;
    text-align: center;
  }
}