:root {
  --bg-top: #08101f;
  --bg-bottom: #1b325f;
  --panel: rgba(8, 16, 31, 0.84);
  --panel-border: rgba(255, 206, 145, 0.28);
  --text: #fff8ef;
  --accent: #ff8c1a;
  --accent-soft: #ffbfd9;
  --grid: rgba(255, 255, 255, 0.08);
  --danger: #ff4a4a;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  position: relative;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 18% 12%, rgba(84, 146, 255, 0.2), transparent 20%),
    radial-gradient(circle at 82% 20%, rgba(255, 140, 26, 0.16), transparent 18%),
    radial-gradient(circle at 70% 74%, rgba(120, 67, 255, 0.12), transparent 24%),
    linear-gradient(180deg, #040816, #08122a 35%, #0b1736 60%, #101d42 100%);
  color: var(--text);
  font-family: "Changa", sans-serif;
}

.space-scene {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.stars,
.nebula {
  position: absolute;
}

.stars {
  inset: 0;
  opacity: 0.9;
  background-repeat: repeat;
}

.stars-a {
  background-image:
    radial-gradient(circle at 12% 20%, rgba(255, 255, 255, 0.92) 0 1px, transparent 1.8px),
    radial-gradient(circle at 28% 72%, rgba(255, 255, 255, 0.88) 0 1.1px, transparent 1.9px),
    radial-gradient(circle at 46% 36%, rgba(255, 246, 179, 0.85) 0 1.2px, transparent 2px),
    radial-gradient(circle at 66% 52%, rgba(255, 255, 255, 0.9) 0 1px, transparent 1.8px),
    radial-gradient(circle at 86% 22%, rgba(255, 191, 217, 0.84) 0 1.2px, transparent 2px),
    radial-gradient(circle at 78% 82%, rgba(255, 255, 255, 0.86) 0 1.1px, transparent 1.9px);
  background-size: 260px 260px;
}

.stars-b {
  background-image:
    radial-gradient(circle at 18% 44%, rgba(255, 255, 255, 0.75) 0 0.9px, transparent 1.5px),
    radial-gradient(circle at 38% 14%, rgba(255, 255, 255, 0.72) 0 0.9px, transparent 1.5px),
    radial-gradient(circle at 58% 68%, rgba(255, 255, 255, 0.7) 0 0.8px, transparent 1.4px),
    radial-gradient(circle at 82% 48%, rgba(255, 255, 255, 0.78) 0 0.9px, transparent 1.5px),
    radial-gradient(circle at 92% 88%, rgba(255, 214, 102, 0.72) 0 1px, transparent 1.6px);
  background-size: 180px 180px;
  opacity: 0.55;
}

.nebula {
  border-radius: 50%;
  filter: blur(30px);
}

.nebula-a {
  top: 6%;
  left: -4%;
  width: 32vw;
  height: 32vw;
  background: radial-gradient(circle, rgba(68, 128, 255, 0.22), transparent 65%);
}

.nebula-b {
  right: 6%;
  bottom: 12%;
  width: 26vw;
  height: 26vw;
  background: radial-gradient(circle, rgba(255, 130, 87, 0.18), transparent 68%);
}

.saturn {
  position: relative;
  width: clamp(230px, 24vw, 300px);
  aspect-ratio: 1 / 1;
  opacity: 0.95;
  transform: rotate(-14deg);
}

.saturn-planet {
  position: absolute;
  inset: 22% 20% 20% 16%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 28%, rgba(255, 248, 230, 0.85), transparent 22%),
    linear-gradient(180deg, #d89d4b 0%, #e8bf72 28%, #d5a15d 54%, #b06d36 100%);
  box-shadow:
    inset -20px -16px 26px rgba(128, 64, 18, 0.34),
    0 0 38px rgba(255, 180, 90, 0.14);
}

.saturn-ring {
  position: absolute;
  left: 0;
  right: 0;
  top: 34%;
  height: 24%;
  border-radius: 50%;
  border: 12px solid rgba(237, 214, 166, 0.82);
}

.saturn-ring-back {
  transform: rotate(10deg);
  opacity: 0.42;
}

.saturn-ring-front {
  transform: rotate(10deg);
  border-top-color: transparent;
  border-left-color: rgba(255, 225, 179, 0.88);
  border-right-color: rgba(255, 225, 179, 0.88);
  border-bottom-color: rgba(215, 174, 109, 0.95);
  box-shadow: 0 0 24px rgba(255, 205, 132, 0.12);
}

.app-shell {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 18px 40px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(180px, 1fr);
  gap: 18px;
  align-items: center;
  margin-bottom: 24px;
}

.title-wrap {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 8px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.78rem;
  color: rgba(255, 248, 239, 0.72);
}

.game-title {
  display: flex;
  flex-direction: column;
  margin: 0;
  font-family: "Baloo 2", cursive;
  font-size: clamp(3.25rem, 10vw, 6.75rem);
  line-height: 0.85;
  text-transform: uppercase;
  color: var(--accent);
  text-shadow:
    -3px -3px 0 var(--accent-soft),
    3px -3px 0 var(--accent-soft),
    -3px 3px 0 var(--accent-soft),
    3px 3px 0 var(--accent-soft),
    0 0 28px rgba(255, 191, 217, 0.6);
}

.start-button {
  appearance: none;
  border: 0;
  border-radius: 28px;
  min-height: 92px;
  padding: 18px 28px;
  background: linear-gradient(180deg, #ffe982, #ff9f1f);
  color: #281300;
  font: 800 clamp(1.35rem, 4vw, 2rem) "Baloo 2", cursive;
  text-transform: uppercase;
  box-shadow:
    0 16px 28px rgba(0, 0, 0, 0.28),
    inset 0 4px 0 rgba(255, 255, 255, 0.45);
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.start-button:hover,
.start-button:focus-visible {
  transform: translateY(-2px) scale(1.01);
  box-shadow:
    0 20px 34px rgba(0, 0, 0, 0.34),
    inset 0 4px 0 rgba(255, 255, 255, 0.52);
}

.game-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
  gap: 20px;
  align-items: start;
  position: relative;
}

.board-panel,
.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 30px;
  backdrop-filter: blur(18px);
  box-shadow: 0 20px 42px rgba(0, 0, 0, 0.28);
}

.board-panel {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 616px;
  padding: 20px;
  overflow: hidden;
}

#gameCanvas,
#nextCanvas {
  display: block;
  width: 100%;
  height: auto;
  background:
    linear-gradient(180deg, rgba(7, 15, 29, 0.96), rgba(9, 20, 40, 0.96));
  border-radius: 22px;
}

#gameCanvas {
  max-width: 396px;
  aspect-ratio: 1 / 2;
}

#nextCanvas {
  max-width: 144px;
  margin: 0 auto;
}

.sidebar {
  display: grid;
  gap: 18px;
  position: relative;
  align-content: start;
}

.saturn-wrap {
  display: flex;
  justify-content: center;
  margin-top: -6px;
  padding-top: 4px;
  pointer-events: none;
}

.panel {
  padding: 18px 18px 20px;
}

.panel h2 {
  margin: 0 0 14px;
  font: 800 1.35rem "Baloo 2", cursive;
  letter-spacing: 0.03em;
}

.controls-panel p,
.overlay-subtext {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.45;
  color: rgba(255, 248, 239, 0.84);
}

.controls-panel p + p {
  margin-top: 12px;
}

.countdown-panel p {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.45;
  color: rgba(255, 248, 239, 0.84);
}

.countdown-value {
  margin: 0 0 10px;
  font: 800 clamp(2rem, 7vw, 3.25rem) "Baloo 2", cursive;
  line-height: 1;
  color: #fff6b3;
  text-shadow: 0 0 18px rgba(255, 191, 217, 0.34);
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(8, 16, 31, 0.34);
  z-index: 5;
  opacity: 1;
  pointer-events: none;
  transition: opacity 0.22s ease;
}

.overlay.hidden {
  opacity: 0;
}

.overlay-card {
  width: min(86%, 380px);
  padding: 28px 24px;
  border-radius: 28px;
  background: rgba(5, 10, 21, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.14);
  text-align: center;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.32);
}

.overlay-kicker {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.76rem;
  color: rgba(255, 248, 239, 0.66);
}

.overlay-message {
  margin: 0;
  font-family: "Baloo 2", cursive;
  font-weight: 800;
  font-size: clamp(2.3rem, 11vw, 5rem);
  line-height: 0.95;
  color: #ffffff;
  text-shadow: 0 0 18px rgba(255, 191, 217, 0.34);
}

.overlay.countdown .overlay-message {
  color: #fff6b3;
}

.overlay.game-over .overlay-message {
  color: #ffded9;
}

@media (max-width: 900px) {
  .hero,
  .game-layout {
    grid-template-columns: 1fr;
  }

  .start-button {
    width: 100%;
  }

  .board-panel {
    min-height: auto;
  }

  .saturn {
    width: clamp(190px, 32vw, 240px);
    opacity: 0.7;
  }
}

@media (max-width: 640px) {
  .app-shell {
    padding: 18px 12px 28px;
  }

  .board-panel,
  .panel {
    border-radius: 24px;
  }

  .board-panel {
    padding: 12px;
  }

  .overlay-card {
    padding: 22px 18px;
  }

  .saturn {
    width: min(210px, 62vw);
    opacity: 0.55;
  }
}