:root {
  --bg-top: #09131f;
  --bg-bottom: #182435;
  --panel: rgba(8, 15, 24, 0.9);
  --panel-border: rgba(112, 190, 255, 0.22);
  --text-main: #ebf5ff;
  --text-dim: #96a6b8;
  --accent: #6fd0ff;
  --accent-hot: #ff8b5d;
  --accent-green: #72e6b2;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "Trebuchet MS", sans-serif;
  color: var(--text-main);
  background:
    radial-gradient(circle at top, rgba(111, 208, 255, 0.14), transparent 30%),
    linear-gradient(180deg, var(--bg-top) 0%, #101b29 52%, var(--bg-bottom) 100%);
}

.game-shell {
  min-height: 100vh;
  padding: 18px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 16px;
}

.top-bar,
.bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.74rem;
}

h1,
h2,
p,
ul {
  margin: 0;
}

h1 {
  font-size: clamp(2.1rem, 4vw, 3.7rem);
}

.status-strip,
.legend,
.mini-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.status-strip span,
.legend-chip,
.mini-card {
  border: 1px solid var(--panel-border);
  background: rgba(7, 13, 22, 0.72);
}

.status-strip span,
.legend-chip {
  padding: 8px 12px;
  text-transform: uppercase;
  font-size: 0.76rem;
  letter-spacing: 0.12em;
}

.playfield-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 16px;
  min-height: 0;
}

#gameCanvas {
  width: 100%;
  height: auto;
  max-height: calc(100vh - 170px);
  border: 1px solid rgba(111, 208, 255, 0.3);
  background: linear-gradient(180deg, #0f2135, #9a5f43);
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.42);
  cursor: crosshair;
}

.hud-panel {
  display: grid;
  align-content: start;
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--panel-border);
  background:
    linear-gradient(180deg, rgba(111, 208, 255, 0.04), transparent 30%),
    var(--panel);
}

.hud-panel section {
  display: grid;
  gap: 10px;
}

.hud-panel h2 {
  color: var(--accent);
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.hud-panel ul {
  padding-left: 18px;
  display: grid;
  gap: 8px;
  color: var(--text-dim);
  line-height: 1.3;
}

kbd {
  display: inline-block;
  min-width: 22px;
  padding: 2px 6px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  text-align: center;
}

.weapon-card {
  display: grid;
  gap: 4px;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
}

.weapon-card.alt {
  border-color: rgba(114, 230, 178, 0.28);
}

.weapon-label,
.mini-label {
  color: var(--text-dim);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.weapon-name {
  font-size: 1.1rem;
}

.weapon-ammo,
.mission-text,
.footer-note {
  color: var(--text-dim);
  line-height: 1.4;
}

.mini-card {
  min-width: 110px;
  padding: 10px 12px;
  display: grid;
  gap: 4px;
}

.mini-card strong {
  font-size: 1.2rem;
}

.legend-chip.enemy {
  border-color: rgba(255, 139, 93, 0.5);
}

.legend-chip.ammo {
  border-color: rgba(111, 208, 255, 0.5);
}

.legend-chip.med {
  border-color: rgba(114, 230, 178, 0.5);
}

.legend-chip.power {
  border-color: rgba(255, 214, 117, 0.5);
}

@media (max-width: 1080px) {
  .playfield-wrap {
    grid-template-columns: 1fr;
  }

  #gameCanvas {
    max-height: none;
  }

  .hud-panel {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }
}

@media (max-width: 680px) {
  .game-shell {
    padding: 12px;
  }

  .top-bar,
  .bottom-bar {
    flex-direction: column;
    align-items: flex-start;
  }
}