:root {
  color-scheme: dark;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --bg: #07100d;
  --ink: #f4f7f1;
  --muted: #a9b7ad;
  --panel: rgba(9, 19, 17, 0.9);
  --panel-soft: rgba(255, 255, 255, 0.075);
  --line: rgba(255, 255, 255, 0.16);
  --cyan: #39d9ff;
  --lime: #b9f45f;
  --gold: #ffd166;
  --rose: #ff5d7d;
  --violet: #a77dff;
}

* {
  box-sizing: border-box;
}

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

body {
  display: grid;
  min-height: 100vh;
  place-items: center;
  overflow-x: hidden;
  color: var(--ink);
  background:
    linear-gradient(145deg, rgba(57, 217, 255, 0.18), transparent 35%),
    linear-gradient(30deg, rgba(185, 244, 95, 0.14), transparent 42%),
    radial-gradient(circle at 80% 18%, rgba(255, 93, 125, 0.14), transparent 25%),
    var(--bg);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, transparent, #000 12%, #000 88%, transparent);
}

.shell {
  display: grid;
  grid-template-columns: minmax(320px, 430px) minmax(230px, 286px);
  gap: 16px;
  width: min(96vw, 760px);
  padding: 18px 0;
  align-items: center;
}

.game,
.side {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow:
    0 28px 84px rgba(0, 0, 0, 0.44),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(16px);
}

.game {
  display: grid;
  gap: 12px;
  padding: 14px;
}

.side {
  display: grid;
  gap: 14px;
  padding: 16px;
}

.topbar {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.topbar > div,
.meter,
.brief,
.preview,
.controls {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
  padding: 12px;
}

.label,
.kicker {
  display: block;
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

strong {
  font-size: clamp(1.15rem, 3vw, 1.6rem);
  line-height: 1;
}

.arena {
  position: relative;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--cyan) 42%, var(--line));
  border-radius: 8px;
  width: min(100%, 360px);
  margin: 0 auto;
  aspect-ratio: 1 / 2;
  background: #050907;
  box-shadow:
    inset 0 0 70px rgba(57, 217, 255, 0.1),
    0 0 36px rgba(57, 217, 255, 0.16);
  touch-action: none;
}

#gameCanvas {
  display: block;
  width: 100%;
  height: 100%;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 12px;
  padding: 24px;
  background: rgba(5, 9, 7, 0.82);
  text-align: center;
  backdrop-filter: blur(8px);
}

.overlay.hidden {
  display: none;
}

.overlay h1 {
  max-width: 620px;
  margin: 0;
  font-size: clamp(2rem, 6.4vw, 4.5rem);
  line-height: 1;
}

.overlay p,
.brief p {
  margin: 0;
  color: var(--muted);
}

.overlay #overlayText {
  max-width: 520px;
}

.overlay-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.brief {
  display: grid;
  gap: 8px;
}

.preview canvas {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.22);
}

button {
  min-height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.08);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease,
    background 160ms ease;
}

button:hover,
button:focus-visible {
  border-color: var(--gold);
  outline: none;
  background: rgba(255, 209, 102, 0.14);
  box-shadow: 0 0 18px rgba(255, 209, 102, 0.24);
  transform: translateY(-1px);
}

#playButton,
#dropButton {
  background: linear-gradient(135deg, rgba(57, 217, 255, 0.72), rgba(185, 244, 95, 0.42));
  box-shadow: 0 0 24px rgba(57, 217, 255, 0.18);
}

.controls {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  padding: 10px;
}

@media (max-width: 880px) {
  body {
    place-items: start center;
  }

  .shell {
    grid-template-columns: 1fr;
    width: min(96vw, 520px);
    padding: 12px 0 18px;
  }

  .side {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .brief,
  #resetButton {
    grid-column: 1 / -1;
  }
}

@media (max-width: 560px) {
  .game,
  .side {
    padding: 10px;
  }

  .controls {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .topbar > div,
  .meter,
  .brief,
  .preview,
  .controls {
    padding: 10px;
  }

  .side {
    grid-template-columns: 1fr;
  }

  .brief,
  #resetButton {
    grid-column: auto;
  }

  button {
    min-height: 46px;
    padding: 0 8px;
  }
}