.star-swarm-game {
  --ss-cyan: #59e6ff;
  --ss-violet: #a879ff;
  --ss-pink: #ff5ebc;
  --ss-gold: #ffd66b;
  display: grid;
  gap: 18px;
  margin: 0 auto;
  max-width: 1480px;
}

.star-swarm-game__hero,
.star-swarm-game__controls,
.star-swarm-game__play,
.star-swarm-game__instructions,
.star-swarm-game__scoreboard article {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.star-swarm-game__hero {
  align-items: center;
  background:
    radial-gradient(
      circle at 82% 30%,
      rgba(168, 121, 255, 0.2),
      transparent 30%
    ),
    radial-gradient(
      circle at 72% 80%,
      rgba(89, 230, 255, 0.16),
      transparent 27%
    ),
    var(--panel);
  border-radius: 28px;
  display: flex;
  justify-content: space-between;
  min-height: 180px;
  overflow: hidden;
  padding: 30px 34px;
  position: relative;
}

.star-swarm-game__hero::after {
  color: rgba(112, 185, 255, 0.28);
  content: "✦  ◇  ✧";
  font-size: clamp(3rem, 8vw, 7rem);
  letter-spacing: 0.2em;
  pointer-events: none;
  position: absolute;
  right: 3%;
  transform: rotate(-8deg);
}

.star-swarm-game__hero > * {
  position: relative;
  z-index: 1;
}

.star-swarm-game__hero h1 {
  font-size: clamp(2.35rem, 5vw, 4.5rem);
  letter-spacing: -0.055em;
  line-height: 0.95;
  margin: 8px 0 12px;
}

.star-swarm-game__hero p {
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
  max-width: 610px;
}

.star-swarm-game__sound {
  align-items: center;
  backdrop-filter: blur(12px);
  background: rgba(12, 22, 45, 0.82);
  border: 1px solid rgba(133, 199, 255, 0.32);
  border-radius: 999px;
  color: #f5f8ff;
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 800;
  gap: 8px;
  padding: 10px 14px;
}

.star-swarm-game__sound:focus-visible,
.star-swarm-game button:focus-visible {
  outline: 3px solid var(--ss-cyan);
  outline-offset: 3px;
}

.star-swarm-game__controls {
  align-items: center;
  border-radius: 22px;
  display: flex;
  gap: 20px;
  justify-content: space-between;
  padding: 18px 22px;
}

.star-swarm-game__controls h2,
.star-swarm-game__play h2,
.star-swarm-game__instructions h2 {
  font-size: 1.3rem;
  margin: 3px 0 0;
}

.star-swarm-game__actions {
  display: flex;
  gap: 9px;
}

.star-swarm-game__actions button {
  min-width: 140px;
}

.star-swarm-game__scoreboard {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.star-swarm-game__scoreboard article {
  border-radius: 20px;
  display: grid;
  gap: 5px;
  min-width: 0;
  padding: 17px 20px;
}

.star-swarm-game__scoreboard article:nth-child(1) {
  border-top: 3px solid var(--ss-cyan);
}
.star-swarm-game__scoreboard article:nth-child(2) {
  border-top: 3px solid var(--ss-gold);
}
.star-swarm-game__scoreboard article:nth-child(3) {
  border-top: 3px solid var(--ss-pink);
}
.star-swarm-game__scoreboard article:nth-child(4) {
  border-top: 3px solid var(--ss-violet);
}

.star-swarm-game__scoreboard span {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 820;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.star-swarm-game__scoreboard strong {
  font-size: clamp(1.55rem, 3vw, 2.35rem);
  line-height: 1;
  overflow-wrap: anywhere;
}

.star-swarm-game__layout {
  align-items: start;
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1fr) minmax(270px, 0.34fr);
}

.star-swarm-game__play,
.star-swarm-game__instructions {
  border-radius: 25px;
  min-width: 0;
  padding: 22px;
}

.star-swarm-game__play-heading {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin-bottom: 15px;
}

.star-swarm-game__canvas-frame {
  aspect-ratio: 8 / 9;
  background: #050817;
  border: 1px solid rgba(119, 182, 255, 0.34);
  border-radius: 24px;
  box-shadow:
    inset 0 0 45px rgba(60, 108, 220, 0.15),
    0 22px 55px rgba(5, 8, 23, 0.28);
  margin: 0 auto;
  max-width: 760px;
  overflow: hidden;
  position: relative;
  width: min(100%, 760px, calc(82svh * 8 / 9));
}

.star-swarm-game__canvas-frame.is-impact {
  animation: star-swarm-impact 0.34s ease;
}

.star-swarm-game canvas {
  aspect-ratio: 8 / 9;
  display: block;
  height: 100%;
  outline: none;
  width: 100%;
}

.star-swarm-game canvas:focus-visible {
  outline: none;
}

.star-swarm-game__canvas-frame:focus-within {
  box-shadow:
    inset 0 0 0 4px var(--ss-cyan),
    inset 0 0 45px rgba(60, 108, 220, 0.15),
    0 0 0 3px rgba(89, 230, 255, 0.2),
    0 22px 55px rgba(5, 8, 23, 0.28);
}

.star-swarm-game__focus-hint {
  color: var(--muted);
  font-size: 0.74rem;
  margin: 9px 2px 0;
  text-align: center;
}

.star-swarm-game__status {
  align-items: center;
  background: rgba(89, 230, 255, 0.08);
  border: 1px solid rgba(89, 230, 255, 0.2);
  border-radius: 17px;
  display: grid;
  gap: 12px;
  grid-template-columns: 38px minmax(0, 1fr);
  margin-top: 14px;
  min-height: 68px;
  padding: 12px 15px;
}

.star-swarm-game__status > span {
  color: var(--ss-cyan);
  font-size: 1.5rem;
  text-align: center;
}

.star-swarm-game__status strong {
  display: block;
  font-size: 0.92rem;
}
.star-swarm-game__status p {
  color: var(--muted);
  font-size: 0.77rem;
  margin: 3px 0 0;
}

.star-swarm-game__status[data-state="paused"],
.star-swarm-game__status[data-state="wave-transition"] {
  background: rgba(168, 121, 255, 0.1);
  border-color: rgba(168, 121, 255, 0.28);
}

.star-swarm-game__status[data-state="life-lost"],
.star-swarm-game__status[data-state="game-over"] {
  background: rgba(255, 94, 188, 0.1);
  border-color: rgba(255, 94, 188, 0.3);
}

.star-swarm-game__instructions {
  position: sticky;
  top: 94px;
}

.star-swarm-game__instructions ul {
  display: grid;
  gap: 12px;
  list-style: none;
  margin: 20px 0;
  padding: 0;
}

.star-swarm-game__instructions li {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 6px;
  grid-template-columns: auto auto minmax(0, 1fr);
  padding-bottom: 12px;
}

.star-swarm-game__instructions li span {
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.4;
}

.star-swarm-game kbd {
  background: #111a35;
  border: 1px solid #41517c;
  border-bottom-width: 3px;
  border-radius: 7px;
  color: #eef4ff;
  font:
    750 0.72rem ui-monospace,
    SFMono-Regular,
    Menlo,
    monospace;
  min-width: 29px;
  padding: 5px 7px;
  text-align: center;
}

.star-swarm-game__briefing {
  background: linear-gradient(
    145deg,
    rgba(89, 230, 255, 0.08),
    rgba(168, 121, 255, 0.08)
  );
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
}

.star-swarm-game__briefing h3 {
  font-size: 0.82rem;
  margin: 0 0 7px;
}
.star-swarm-game__briefing p {
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.55;
  margin: 6px 0 0;
}

@keyframes star-swarm-impact {
  0%,
  100% {
    filter: none;
  }
  50% {
    filter: brightness(1.12) saturate(1.2);
  }
}

@media (prefers-reduced-motion: reduce) {
  .star-swarm-game__canvas-frame.is-impact {
    animation: none;
  }
}

@media (max-width: 1100px) {
  .star-swarm-game__layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .star-swarm-game__instructions {
    position: static;
  }
}

@media (max-width: 700px) {
  .star-swarm-game__hero {
    align-items: flex-start;
    display: grid;
    gap: 20px;
    padding: 24px;
  }
  .star-swarm-game__hero::after {
    opacity: 0.5;
  }
  .star-swarm-game__controls {
    align-items: stretch;
    display: grid;
  }
  .star-swarm-game__actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .star-swarm-game__scoreboard {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .star-swarm-game__play,
  .star-swarm-game__instructions {
    padding: 16px;
  }
  .star-swarm-game__canvas-frame {
    border-radius: 18px;
    width: 100%;
  }
}

@media (max-width: 430px) {
  .star-swarm-game__actions {
    grid-template-columns: minmax(0, 1fr);
  }
}