.easter-egg-trigger {
  /* Botón camuflado del easter egg: pequeño, fijo y casi transparente. */
  position: fixed;
  right: 18px;
  bottom: 16px;
  z-index: 20;
  width: 18px;
  height: 18px;
  border: 1px solid rgba(53, 244, 255, 0.18);
  border-radius: 50% 8px 50% 8px;
  background: linear-gradient(135deg, rgba(53, 244, 255, 0.16), rgba(255, 79, 216, 0.08));
  cursor: pointer;
  opacity: 0.28;
  transform: rotate(45deg);
  transition: opacity 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.easter-egg-trigger:hover,
.easter-egg-trigger:focus-visible {
  opacity: 0.82;
  box-shadow: 0 0 18px rgba(53, 244, 255, 0.42);
  outline: none;
  transform: rotate(45deg) scale(1.12);
}

.runner-modal {
  /* Superposición del mini-juego. Solo recibe clics cuando está abierta. */
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(2, 4, 7, 0.78);
  backdrop-filter: blur(16px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
}

.runner-modal.is-open {
  opacity: 1;
  pointer-events: auto;
}

.runner-panel {
  /* Panel del juego con estética neón coherente con la landing. */
  width: min(920px, 100%);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(53, 244, 255, 0.08), rgba(255, 79, 216, 0.08)),
    rgba(5, 8, 12, 0.94);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.55), 0 0 40px rgba(53, 244, 255, 0.12);
  padding: 1rem;
}

.runner-header,
.runner-stats {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.runner-kicker {
  margin: 0 0 0.25rem;
  color: var(--cyan);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.runner-header h2 {
  margin: 0;
  font-size: clamp(1.3rem, 4vw, 2rem);
}

.runner-close {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-size: 1.7rem;
  line-height: 1;
}

.runner-stats {
  margin: 1rem 0 0.75rem;
  color: #dfe8f2;
  font-size: 0.9rem;
  font-weight: 700;
}

.runner-stats strong {
  color: var(--green);
}

.runner-canvas {
  /* Canvas donde se dibuja el endless runner. */
  display: block;
  width: 100%;
  max-height: min(55vh, 360px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: #050607;
}

.runner-canvas:focus-visible {
  outline: 3px solid rgba(53, 244, 255, 0.32);
  outline-offset: 3px;
}

@media (max-width: 620px) {
  .runner-panel {
    padding: 0.75rem;
  }

  .runner-header,
  .runner-stats {
    align-items: flex-start;
    flex-direction: column;
  }

  .runner-close {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
  }
}