:root {
  --bg: #111217;
  --panel: rgba(16, 18, 24, 0.88);
  --panel-soft: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.12);
  --white: #f7f8fb;
  --pink: #ff2d95;
  --cyan: #42e8f8;
  --yellow: #ffe76a;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: "Nunito", sans-serif;
  color: var(--white);
  background:
    radial-gradient(circle at top, rgba(255, 45, 149, 0.15), transparent 28%),
    radial-gradient(circle at 20% 30%, rgba(66, 232, 248, 0.16), transparent 26%),
    linear-gradient(180deg, #23242b 0%, #0c0d12 100%);
}

button {
  font: inherit;
}

.page-shell {
  width: min(1680px, calc(100vw - 12px));
  margin: 0 auto;
  height: 100dvh;
  padding: 6px;
  padding-top: max(6px, env(safe-area-inset-top));
  padding-bottom: max(6px, env(safe-area-inset-bottom));
  padding-left: max(6px, env(safe-area-inset-left));
  padding-right: max(6px, env(safe-area-inset-right));
}

.game-layout {
  display: block;
  height: 100%;
}

.board-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.glass-button {
  border: 0;
  color: #fff;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(196, 202, 214, 0.92));
  color: #132033;
  border-radius: 999px;
  padding: 10px 18px;
  font-weight: 800;
  box-shadow:
    inset 0 2px 0 rgba(255, 255, 255, 0.8),
    0 10px 18px rgba(0, 0, 0, 0.28);
  cursor: pointer;
  transition:
    transform 140ms ease,
    box-shadow 140ms ease,
    filter 140ms ease;
}

.glass-button:hover {
  transform: translateY(-1px);
  filter: brightness(1.03);
  box-shadow:
    inset 0 2px 0 rgba(255, 255, 255, 0.8),
    0 14px 22px rgba(0, 0, 0, 0.3);
}

.glass-button.secondary {
  background: linear-gradient(180deg, rgba(66, 232, 248, 0.95), rgba(82, 151, 255, 0.85));
  color: #08131f;
}

.board-card {
  padding: 12px;
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
}

.icon-button {
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.04));
  color: #eef4ff;
  font: 800 1.25rem/1 "Nunito", sans-serif;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 8px 18px rgba(0, 0, 0, 0.22);
  cursor: pointer;
}

.icon-button:hover {
  filter: brightness(1.08);
}

.icon-button.active {
  background: linear-gradient(180deg, rgba(66, 232, 248, 0.95), rgba(82, 151, 255, 0.85));
  color: #08131f;
}

.hud {
  display: grid;
  grid-template-columns: 0.9fr 0.8fr 0.9fr 1fr;
  gap: 8px;
  margin-bottom: 8px;
}

.hud-group {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 8px 10px;
  min-height: 54px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hud-group strong {
  font-size: 1.2rem;
}

.hud-label {
  color: #abb2bf;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hud-group.small {
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.controls-group {
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.hud-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 18px currentColor;
}

.hud-dot.cyan {
  color: var(--cyan);
  background: var(--cyan);
}

.hud-dot.pink {
  color: #ff65d1;
  background: #ff65d1;
}

.hud-dot.yellow {
  color: var(--yellow);
  background: var(--yellow);
}

.board-frame {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  flex: 1;
  min-height: 0;
  height: 100%;
  background:
    linear-gradient(rgba(14, 16, 22, 0.9), rgba(14, 16, 22, 0.95)),
    radial-gradient(circle at center, rgba(255, 255, 255, 0.03), transparent 52%);
}

canvas {
  width: 100%;
  display: block;
  height: 100%;
  min-height: 0;
  aspect-ratio: auto;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(5, 7, 11, 0.5);
  backdrop-filter: blur(4px);
}

.overlay.hidden,
.level-banner.hidden {
  display: none;
}

.overlay-panel {
  width: min(90%, 420px);
  text-align: center;
  padding: 28px 24px;
  border-radius: 24px;
  background: rgba(14, 17, 23, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow);
}

.overlay-panel h2 {
  margin: 0 0 12px;
  font-family: "Luckiest Guy", cursive;
  font-size: 2rem;
  letter-spacing: 0.03em;
}

.overlay-panel p {
  margin: 0 0 18px;
  color: #cad2dd;
  font-size: 1rem;
}

.level-banner {
  position: absolute;
  left: 50%;
  top: 42%;
  transform: translate(-50%, -50%) rotate(-4deg);
  font-family: "Luckiest Guy", cursive;
  font-size: clamp(2.4rem, 7vw, 4.8rem);
  color: #48a8ff;
  text-shadow:
    0 4px 0 #07284f,
    0 0 28px rgba(255, 45, 149, 0.55);
  pointer-events: none;
  animation: pop-in 900ms ease;
}

.modal {
  border: 0;
  border-radius: 24px;
  padding: 0;
  width: min(92vw, 560px);
  background: transparent;
}

.modal::backdrop {
  background: rgba(0, 0, 0, 0.6);
}

.modal-card {
  background: #12151c;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.modal-card h2 {
  margin-top: 0;
  font-family: "Luckiest Guy", cursive;
  font-size: 2rem;
}

.modal-body {
  color: #d0d6df;
  margin-bottom: 18px;
}

.modal-body p {
  margin: 0 0 12px;
}

.modal-actions {
  display: flex;
  justify-content: center;
}

.option-list {
  display: grid;
  gap: 10px;
}

.size-section {
  margin-bottom: 18px;
}

.size-section.hidden {
  display: none;
}

.size-section-label {
  color: #abb2bf;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 8px;
}

.size-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.size-btn {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  color: #ccd5e0;
  font: 700 0.72rem/1.2 "Nunito", sans-serif;
  padding: 10px 4px;
  cursor: pointer;
  transition: background 120ms, color 120ms;
}

.size-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.size-btn--active {
  background: linear-gradient(180deg, rgba(66, 232, 248, 0.95), rgba(82, 151, 255, 0.85));
  color: #08131f;
  border-color: transparent;
}

.bg-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.bg-btn {
  border: 2px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  color: #fff;
  font: 700 0.65rem/1.2 "Nunito", sans-serif;
  padding: 22px 4px 8px;
  cursor: pointer;
  text-shadow: 0 1px 4px rgba(0,0,0,0.8);
  transition: border-color 120ms, transform 120ms;
}

.bg-btn:hover {
  border-color: rgba(255, 255, 255, 0.35);
  transform: scale(1.04);
}

.bg-btn--active {
  border-color: rgba(66, 232, 248, 0.9);
  box-shadow: 0 0 0 1px rgba(66, 232, 248, 0.4);
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 14px;
}

.toggle-row-label {
  color: #d0d6df;
  font-size: 0.9rem;
  font-weight: 700;
}

.toggle-pill {
  position: relative;
  width: 48px;
  height: 28px;
  border: none;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.15);
  cursor: pointer;
  transition: background 200ms;
  flex-shrink: 0;
}

.toggle-pill--on {
  background: linear-gradient(90deg, rgba(66, 232, 248, 0.95), rgba(82, 151, 255, 0.9));
}

.toggle-pill-thumb {
  position: absolute;
  top: 4px;
  left: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  transition: transform 200ms;
}

.toggle-pill--on .toggle-pill-thumb {
  transform: translateX(20px);
}

@keyframes pop-in {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.55) rotate(-10deg);
  }
  60% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.08) rotate(-2deg);
  }
  100% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1) rotate(-4deg);
  }
}

@media (max-width: 920px) {
  .page-shell {
    width: 100vw;
    height: 100dvh;
    padding: 6px;
  }

  .board-card {
    padding: 8px;
  }

  .hud {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 0.8fr) minmax(0, 0.9fr) minmax(0, 1fr);
    gap: 8px;
    margin-bottom: 8px;
  }

  .hud-group {
    min-height: 52px;
    padding: 8px 10px;
    border-radius: 14px;
  }

  .hud-group strong {
    font-size: 1rem;
  }

  .hud-label {
    font-size: 0.66rem;
  }

  .hud-dot {
    width: 14px;
    height: 14px;
  }

  .board-frame {
    border-radius: 18px;
  }

}

@media (max-width: 560px) {
  .page-shell {
    width: 100vw;
    padding: 2px;
    padding-top: max(2px, env(safe-area-inset-top));
    padding-bottom: max(2px, env(safe-area-inset-bottom));
  }

  .board-card {
    padding: 4px;
    border-radius: 16px;
  }

  .icon-button {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    font-size: 0.95rem;
  }

  .hud {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 0.8fr) minmax(0, 0.9fr) minmax(0, 1fr);
    gap: 4px;
  }

  .hud-group {
    min-height: 42px;
    padding: 6px 7px;
    border-radius: 12px;
  }

  .hud-group strong {
    font-size: 0.92rem;
  }

  .hud-label {
    font-size: 0.6rem;
    letter-spacing: 0.05em;
  }

  .board-frame {
    border-radius: 16px;
  }

  .controls-group {
    gap: 6px;
  }
}