:root {
  --bg: #05070f;
  --panel: rgba(12, 17, 33, 0.88);
  --line: rgba(82, 121, 189, 0.45);
  --ink: #d8e8ff;
  --muted: #9cb5db;
  --accent: #34d2ff;
  --accent-2: #88f6ff;
  --danger: #ff4d8d;
  --warm: #ffb84d;
  --good: #7df9c1;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  background:
    radial-gradient(circle at 16% 20%, rgba(104, 84, 255, 0.18), transparent 28%),
    radial-gradient(circle at 84% 18%, rgba(52, 210, 255, 0.15), transparent 24%),
    radial-gradient(circle at 50% -10%, #1e2d57, var(--bg) 62%);
  color: var(--ink);
  min-height: 100vh;
  overflow-x: hidden;
}

.bg-grid,
.bg-orb {
  position: fixed;
  pointer-events: none;
}

.bg-grid {
  inset: 0;
  background-image: linear-gradient(rgba(52, 210, 255, 0.08) 1px, transparent 1px), linear-gradient(90deg, rgba(52, 210, 255, 0.08) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(circle at 50% 35%, black 15%, transparent 78%);
}

.bg-orb {
  width: 360px;
  height: 360px;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.28;
}

.orb-a {
  top: 8%;
  left: -80px;
  background: #3b82f6;
}

.orb-b {
  right: -90px;
  bottom: 12%;
  background: #ff4d8d;
}

.wrapper {
  max-width: 1560px;
  margin: 0 auto;
  padding: 1.1rem;
}

.layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr) 320px;
  gap: 1rem;
  align-items: start;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(14px);
}

.mission-panel,
.upgrade-panel {
  padding: 1rem;
}

.eyebrow {
  margin: 0 0 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  color: var(--accent-2);
}

h1,
h2,
h3 {
  margin-top: 0;
}

h1 {
  font-family: "Press Start 2P", monospace;
  font-size: 1.35rem;
  line-height: 1.45;
  color: var(--accent);
}

.lead,
.control-note,
.message,
.story-card p,
.legend,
.run-log,
.upgrade-card p {
  color: var(--muted);
}

.story-card,
.log-card,
.upgrade-card,
.stat {
  background: rgba(10, 15, 30, 0.72);
  border: 1px solid rgba(104, 144, 214, 0.25);
  border-radius: 14px;
}

.story-card,
.log-card {
  padding: 0.9rem;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 1rem 0;
}

.stat {
  padding: 0.7rem 0.8rem;
  display: grid;
  gap: 0.35rem;
  font-weight: 700;
}

.stat span {
  color: #fff;
  font-size: 1.15rem;
}

.buttons {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 0.7rem 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

button:hover {
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

#startBtn,
.buy-upgrade {
  background: linear-gradient(135deg, var(--accent), #9ef4ff);
  color: #02131d;
}

#pauseBtn {
  background: #23355d;
  color: var(--ink);
}

.arena-shell {
  padding: 1rem;
  position: relative;
}

.arena-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 25%, transparent 75%, rgba(255, 255, 255, 0.025));
  pointer-events: none;
}

.arena-top {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
  margin-bottom: 0.9rem;
}

.meter-box {
  min-width: 240px;
}

.meter-box span {
  display: block;
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.meter {
  height: 12px;
  background: rgba(34, 49, 85, 0.8);
  border-radius: 999px;
  overflow: hidden;
}

.meter span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--danger));
  border-radius: inherit;
}

canvas {
  width: 100%;
  border-radius: 16px;
  border: 1px solid rgba(87, 137, 220, 0.45);
  background: linear-gradient(180deg, #080d1b, #05070f);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04), 0 16px 36px rgba(0, 0, 0, 0.45);
}

.legend {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.75rem;
  font-size: 0.92rem;
}

.upgrade-panel {
  display: grid;
  gap: 1rem;
}

.upgrade-list {
  display: grid;
  gap: 0.75rem;
}

.upgrade-card {
  padding: 0.85rem;
}

.upgrade-card header {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: start;
}

.upgrade-card strong,
.log-item strong {
  color: #fff;
}

.upgrade-meta {
  font-size: 0.85rem;
  color: var(--accent-2);
}

.run-log {
  display: grid;
  gap: 0.65rem;
}

.log-item {
  border-left: 2px solid rgba(52, 210, 255, 0.6);
  padding-left: 0.7rem;
  font-size: 0.92rem;
}

@media (max-width: 1280px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .legend {
    flex-direction: column;
  }
}

@media (max-width: 760px) {
  .stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  h1 {
    font-size: 1.05rem;
  }

  .arena-top {
    flex-direction: column;
    align-items: stretch;
  }

  .meter-box {
    min-width: 0;
  }
}