:root {
  color-scheme: dark;
  --bg: #2c3740;
  --panel: rgba(44, 55, 64, 0.82);
  --panel-border: rgba(199, 211, 222, 0.34);
  --text: #f5f7fa;
  --muted: #c7d3de;
  --accent: #b7cdde;
  --accent-strong: #55677d;
  --surface-soft: #e7f0f8;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #000;
  color: var(--text);
  font-family: Inter, "Segoe UI", sans-serif;
}

button,
kbd {
  font: inherit;
}

button {
  cursor: pointer;
}

.game-shell {
  position: relative;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top, rgba(26, 34, 46, 0.55), transparent 40%), var(--bg);
}

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

.hud {
  position: absolute;
  top: 1rem;
  left: 1rem;
  right: 1rem;
  display: grid;
  gap: 0.7rem;
  pointer-events: none;
}

.hud-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.hud-panel {
  min-width: 7.75rem;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--panel-border);
  border-radius: 0.45rem;
  background: var(--panel);
  backdrop-filter: blur(8px);
}

.hud-panel .label {
  display: block;
  margin-bottom: 0.2rem;
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hud-panel strong {
  font-size: 0.96rem;
  font-weight: 700;
}

.compact .hud-panel {
  min-width: 6.8rem;
}

kbd {
  display: inline-flex;
  min-width: 1.65rem;
  height: 1.65rem;
  margin-right: 0.22rem;
  align-items: center;
  justify-content: center;
  padding: 0 0.32rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-bottom-color: rgba(255, 255, 255, 0.24);
  border-radius: 0.3rem;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 600;
}

.menu-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background:
    linear-gradient(rgba(2, 3, 5, 0.32), rgba(2, 3, 5, 0.78)),
    url("../../images/artillery-menu-day-desert.png") center center / cover no-repeat;
}

.menu-overlay.hidden {
  display: none;
}

.menu-panel {
  width: min(100%, 34rem);
  padding: 2rem;
  border: 1px solid rgba(199, 211, 222, 0.34);
  border-radius: 0.55rem;
  background: rgba(44, 55, 64, 0.84);
  backdrop-filter: blur(12px);
  box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.35);
}

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.menu-panel h1 {
  margin: 0 0 0.8rem;
  font-size: clamp(2.3rem, 6vw, 4rem);
  line-height: 1.02;
}

.menu-copy {
  max-width: 28rem;
  margin: 0 0 1.6rem;
  color: #d4dce7;
  font-size: 1rem;
  line-height: 1.6;
}

.menu-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.menu-button {
  min-width: 11rem;
  padding: 0.85rem 1.1rem;
  border: 1px solid transparent;
  border-radius: 0.4rem;
  font-weight: 700;
}

.menu-button.primary {
  background: var(--accent-strong);
  border-color: rgba(199, 211, 222, 0.2);
  color: #f8fbfd;
}

.menu-button.primary:hover {
  background: #6a7f93;
}

.menu-button.secondary {
  background: rgba(231, 240, 248, 0.12);
  border-color: rgba(199, 211, 222, 0.24);
  color: #f5f7fa;
}

.menu-button.secondary:hover {
  background: rgba(231, 240, 248, 0.18);
  border-color: rgba(199, 211, 222, 0.4);
}

@media (max-width: 800px) {
  .hud {
    top: 0.8rem;
    left: 0.8rem;
    right: 0.8rem;
  }

  .hud-panel {
    min-width: 6.2rem;
    padding: 0.58rem 0.65rem;
  }

  .menu-panel {
    padding: 1.4rem;
  }
}

@media (max-width: 560px) {
  .hud-row {
    gap: 0.45rem;
  }

  .hud-panel {
    min-width: calc(50% - 0.3rem);
  }

  .hud-panel strong {
    font-size: 0.88rem;
  }

  kbd {
    min-width: 1.4rem;
    height: 1.4rem;
    font-size: 0.72rem;
  }

  .menu-button {
    width: 100%;
  }
}