:root {
  color-scheme: light;
  --shell-bg: linear-gradient(180deg, #c6f9ff 0%, #95e7ff 40%, #5dc8ef 100%);
  --card-border: rgba(255, 255, 255, 0.55);
  --shadow: 0 30px 90px rgba(28, 86, 132, 0.26);
  --text: #11304d;
  --text-soft: rgba(17, 48, 77, 0.78);
  --button-shadow: 0 16px 40px rgba(255, 108, 181, 0.3);
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: "Avenir Next", "Trebuchet MS", "Gill Sans", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.95), transparent 28%),
    radial-gradient(circle at 80% 10%, rgba(255, 245, 191, 0.85), transparent 26%),
    linear-gradient(180deg, #dffcff 0%, #c8f4ff 32%, #86d9f3 100%);
}

.game-page {
  min-height: 100vh;
  padding: 18px 18px 24px;
}

.topbar {
  width: min(1080px, 96vw);
  margin: 0 auto 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.back-link,
.topbar-note {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.64);
  backdrop-filter: blur(12px);
  box-shadow: 0 12px 30px rgba(28, 86, 132, 0.12);
}

.back-link {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
}

.topbar-note {
  margin: 0;
  color: var(--text-soft);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.72rem;
}

.page-shell {
  min-height: calc(100vh - 86px);
  display: grid;
  place-items: center;
}

.game-shell {
  position: relative;
  width: min(96vw, 1080px);
  border-radius: 34px;
  overflow: hidden;
  background: var(--shell-bg);
  box-shadow: var(--shadow);
}

.game-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 15% 14%, rgba(255, 255, 255, 0.75), transparent 18%),
    radial-gradient(circle at 86% 18%, rgba(255, 232, 160, 0.45), transparent 18%),
    radial-gradient(circle at 50% 100%, rgba(0, 141, 198, 0.2), transparent 30%);
}

#game {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
}

.start-hit-target {
  position: absolute;
  inset: 0;
  z-index: 3;
  border: 0;
  border-radius: 0;
  padding: 0;
  background: transparent;
  box-shadow: none;
  cursor: pointer;
}

.panel {
  position: absolute;
  inset: 24px;
  z-index: 2;
  display: grid;
  place-items: center;
  text-align: center;
  gap: 16px;
  padding: 28px;
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.87), rgba(255, 255, 255, 0.7)),
    radial-gradient(circle at top, rgba(255, 215, 104, 0.28), transparent 38%);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.panel-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.78rem;
  color: var(--text-soft);
}

h1 {
  margin: 0;
  font-family: "Marker Felt", "Trebuchet MS", cursive;
  font-size: clamp(2.5rem, 5vw, 4.8rem);
  line-height: 1;
}

.panel-copy {
  max-width: 34rem;
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.55;
}

.controls-card {
  width: min(100%, 31rem);
  padding: 18px 20px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
  color: var(--text-soft);
}

.controls-card p {
  margin: 0.4rem 0;
}

.panel-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 14px 22px;
  font: inherit;
  font-weight: 700;
  color: #143553;
  cursor: pointer;
  background:
    linear-gradient(180deg, #fff6b4 0%, #ffd166 48%, #ffa2d2 100%);
  box-shadow: var(--button-shadow);
}

button:hover,
button:active {
  box-shadow: var(--button-shadow);
}

button[hidden] {
  display: none;
}

@media (max-width: 720px) {
  .game-page {
    padding: 12px 12px 16px;
  }

  .topbar {
    margin-bottom: 10px;
    flex-direction: column;
    align-items: stretch;
  }

  .page-shell {
    min-height: auto;
  }

  .panel {
    inset: 14px;
    padding: 20px 16px;
  }

  .panel-copy,
  .controls-card {
    font-size: 0.96rem;
  }
}