/* =========================================================================
   Game page: Repulsor Rush
   ========================================================================= */

.game-nav {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.8rem clamp(1rem, 3vw, 2rem);
  background: linear-gradient(180deg, rgba(5, 7, 15, 0.85), transparent);
}

.game-nav .btn {
  padding: 0.6em 1.1em;
  font-size: 0.75rem;
}

/* the play area fills the whole screen */
.stage {
  position: relative;
  height: 100vh;
  min-height: 480px;
  overflow: hidden;
  isolation: isolate;
  touch-action: none; /* finger drags move the hero instead of scrolling */
}

.sky-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
  filter: saturate(1.2) brightness(0.85);
}

#game {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* hide the shared targeting cursor while flying */
.game-page.is-playing .reticle {
  display: none;
}

/* ---------- HUD ---------- */

.hud {
  position: absolute;
  left: 50%;
  bottom: 1rem;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  align-items: stretch;
  gap: 0.6rem;
  padding: 0.5rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(5, 7, 15, 0.7);
  backdrop-filter: blur(6px);
}

.hud-box {
  display: grid;
  min-width: 84px;
  padding: 0.2rem 0.7rem;
  text-align: center;
}

.hud-label {
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.hud-value {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.3rem;
  color: var(--gold);
}

.hud-value.bump {
  animation: bump 0.25s;
}

@keyframes bump {
  50% {
    transform: scale(1.3);
  }
}

.shields {
  color: var(--red-hot);
  letter-spacing: 0.1em;
}

.beam-meter {
  position: relative;
  width: 170px;
  border: 2px solid var(--cyan);
  border-radius: 10px;
  overflow: hidden;
  background: rgba(94, 231, 255, 0.08);
  color: var(--text);
  cursor: pointer;
}

.beam-fill {
  position: absolute;
  inset: 0;
  width: 0%;
  background: linear-gradient(90deg, #0b4f6c, var(--cyan));
  transition: width 0.2s;
}

.beam-text {
  position: relative;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
}

/* full meter: flashing and ready */
.beam-meter.is-ready {
  animation: beam-ready 0.5s ease-in-out infinite alternate;
}

.beam-meter.is-ready .beam-text::after {
  content: " READY!";
}

@keyframes beam-ready {
  to {
    box-shadow: 0 0 30px var(--cyan), 0 0 60px var(--cyan);
    border-color: #fff;
  }
}

/* ---------- Start / game over screen ---------- */

.screen {
  position: absolute;
  inset: 0;
  z-index: 15;
  display: none;
  place-items: center;
  padding: 4.5rem 1rem 1rem;
  background: radial-gradient(circle, rgba(5, 7, 15, 0.55), rgba(5, 7, 15, 0.9));
}

.screen.is-on {
  display: grid;
}

.screen-box {
  max-width: 560px;
  text-align: center;
  padding: 2rem;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  backdrop-filter: blur(8px);
  animation: screen-in 0.5s cubic-bezier(0.2, 0.9, 0.3, 1.3);
}

@keyframes screen-in {
  from {
    transform: scale(0.8);
    opacity: 0;
  }
}

.screen-box h1 {
  font-size: clamp(2.2rem, 7vw, 3.6rem);
  font-weight: 900;
}

.how-to {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
  display: grid;
  gap: 0.35rem;
  text-align: left;
  font-size: 1.1rem;
}

.how-to li::before {
  content: "▸ ";
  color: var(--gold);
}

.cyan {
  color: var(--cyan);
}

.red {
  color: var(--red-hot);
}

.best {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--muted);
}

.start-button {
  font-size: 1.1rem;
  padding: 1em 2em;
}

/* big "LEVEL 2!" message that zooms across */
.banner {
  position: absolute;
  top: 38%;
  left: 0;
  right: 0;
  z-index: 12;
  text-align: center;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.5rem, 9vw, 5.5rem);
  color: var(--gold);
  text-shadow: 0 0 30px var(--red-hot);
  pointer-events: none;
  opacity: 0;
}

.banner.show {
  animation: banner 1.6s ease-out;
}

@keyframes banner {
  0% {
    opacity: 0;
    transform: scale(3);
  }
  20%,
  70% {
    opacity: 1;
    transform: scale(1);
  }
  100% {
    opacity: 0;
    transform: translateY(-40px);
  }
}

@media (max-width: 600px) {
  .game-nav .btn {
    font-size: 0;
    padding: 0.6em 0.9em;
  }

  .game-nav .btn::before {
    content: "←";
    font-size: 1rem;
  }

  .hud {
    width: calc(100% - 1rem);
    justify-content: space-between;
    gap: 0.2rem;
  }

  .hud-box {
    min-width: 0;
    padding: 0.2rem 0.3rem;
  }

  .hud-value {
    font-size: 1rem;
  }

  .beam-meter {
    width: 110px;
  }
}