@import url("https://fonts.googleapis.com/css2?family=Barlow:wght@500;700&display=swap");

:root {
  color-scheme: dark;
  --bg: radial-gradient(circle at center, #061637, #020712 60%);
  --accent: #49d3ff;
  --accent-strong: #8df5ff;
  --danger: #ff4f6d;
  --text: #f1f7ff;
  --text-subtle: #bcd0ff;
  --shadow: 0 16px 60px rgba(2, 12, 32, 0.55);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Barlow", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: var(--bg);
  color: var(--text);
  display: grid;
  place-items: center;
}

.game-shell {
  position: relative;
  width: min(100vw, 1100px);
  height: min(100vh, 680px);
  display: grid;
  grid-template-columns: minmax(220px, 260px) 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
}

.hud {
  padding: 1.25rem;
  background: rgba(4, 12, 30, 0.72);
  border: 1px solid rgba(73, 211, 255, 0.2);
  border-radius: 20px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.hud__title {
  margin: 0;
  font-size: 2.25rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hud__stats {
  display: grid;
  gap: 0.4rem;
  font-size: 1.1rem;
}

.hud__stats span {
  font-weight: 700;
  color: var(--accent-strong);
}

.hud__help {
  font-size: 0.95rem;
  line-height: 1.45;
  color: var(--text-subtle);
}

canvas {
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, rgba(14, 28, 58, 0.8), rgba(1, 4, 10, 0.95));
  border-radius: 24px;
  border: 1px solid rgba(73, 211, 255, 0.2);
  box-shadow: var(--shadow);
  display: block;
}

.overlay {
  position: absolute;
  inset: 1.5rem;
  border-radius: 24px;
  background: rgba(4, 12, 30, 0.78);
  backdrop-filter: blur(8px);
  display: grid;
  place-items: center;
  transition: opacity 200ms ease;
  z-index: 2;
}

.overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.lobby {
  position: absolute;
  inset: 1.5rem;
  border-radius: 24px;
  background: rgba(3, 9, 18, 0.9);
  backdrop-filter: blur(10px);
  display: grid;
  place-items: center;
  text-align: center;
  z-index: 3;
  transition: opacity 220ms ease;
}

.lobby.hidden {
  opacity: 0;
  pointer-events: none;
}

.lobby__panel {
  display: grid;
  gap: 1.25rem;
  padding: 2.5rem 3.5rem;
  border: 1px solid rgba(141, 245, 255, 0.2);
  border-radius: 26px;
  box-shadow: 0 18px 50px rgba(7, 24, 58, 0.55);
  background: linear-gradient(135deg, rgba(13, 32, 74, 0.95), rgba(6, 15, 34, 0.92));
}

.lobby__title {
  margin: 0;
  font-size: 2.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lobby__status {
  margin: 0;
  font-size: 1.1rem;
  color: var(--accent-strong);
}

.lobby__tip {
  margin: 0;
  font-size: 1rem;
  color: var(--text-subtle);
  max-width: 420px;
  justify-self: center;
}

.lobby button {
  cursor: pointer;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  border-radius: 999px;
  padding: 1rem 3.5rem;
  border: none;
  background: linear-gradient(135deg, var(--accent-strong), #9c6bff);
  color: #020712;
  text-transform: uppercase;
  box-shadow: 0 22px 45px rgba(73, 211, 255, 0.4);
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.lobby button:hover {
  transform: translateY(-3px);
  box-shadow: 0 28px 55px rgba(73, 211, 255, 0.55);
}

.overlay__content {
  text-align: center;
  display: grid;
  gap: 1rem;
  padding: 2rem 3rem;
}

.overlay__content h2 {
  font-size: 2.5rem;
  margin: 0;
}

.overlay__content button {
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: 999px;
  padding: 0.85rem 2.8rem;
  border: none;
  background: linear-gradient(135deg, var(--accent), #836bff);
  color: #020712;
  text-transform: uppercase;
  box-shadow: 0 15px 30px rgba(73, 211, 255, 0.35);
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.overlay__content button:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 38px rgba(73, 211, 255, 0.45);
}

@media (max-width: 900px) {
  .game-shell {
    grid-template-columns: 1fr;
    grid-template-rows: min-content 1fr;
    height: 100vh;
    padding: 1rem;
  }

  .hud {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    text-align: center;
  }

  .hud__help {
    display: none;
  }
}