:root {
  color-scheme: dark;
  --bg: #05040c;
  --panel: #0f0d1c;
  --line: rgba(92, 225, 255, 0.22);
  --text: #e8e6ff;
  --muted: rgba(232, 230, 255, 0.62);
  --accent: #5ce1ff;
  --hot: #ff6ad5;
  --gold: #ffd166;
  --good: #7bffb3;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(92, 225, 255, 0.08), transparent 60%),
    radial-gradient(900px 500px at 80% 100%, rgba(255, 106, 213, 0.07), transparent 55%),
    var(--bg);
  color: var(--text);
}

#app {
  max-width: 1280px;
  margin: 0 auto;
  padding: 20px 20px 32px;
}

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

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
}

.logo {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--accent);
  background: rgba(92, 225, 255, 0.06);
  box-shadow: 0 0 24px rgba(92, 225, 255, 0.15);
  font-size: 20px;
}

h1 {
  margin: 0;
  font-size: 1.35rem;
  letter-spacing: 0.12em;
  font-weight: 800;
}

.tag {
  margin: 2px 0 0;
  color: var(--hot);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.meta {
  color: var(--muted);
  font-size: 0.85rem;
}

.dot {
  margin: 0 0.4rem;
  opacity: 0.5;
}

main {
  display: grid;
  grid-template-columns: minmax(0, 960px) minmax(220px, 1fr);
  gap: 18px;
  align-items: start;
}

#stage {
  position: relative;
  border-radius: 16px;
  padding: 10px;
  background: linear-gradient(145deg, rgba(92, 225, 255, 0.12), rgba(255, 106, 213, 0.08));
  box-shadow:
    0 0 0 1px rgba(92, 225, 255, 0.15),
    0 20px 60px rgba(0, 0, 0, 0.45);
}

#game {
  display: block;
  width: 100%;
  height: auto;
  max-width: 960px;
  border-radius: 10px;
  background: #07060f;
  cursor: crosshair;
  image-rendering: auto;
}

#file-warning {
  position: absolute;
  inset: 18px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 24px;
  background: rgba(7, 6, 15, 0.92);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--gold);
  font-size: 0.95rem;
  z-index: 5;
}

/* ID rules must not defeat the HTML hidden attribute */
#file-warning[hidden] {
  display: none !important;
}

.panel {
  background: rgba(15, 13, 28, 0.9);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px 18px 8px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.panel h2 {
  margin: 0 0 8px;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.panel p,
.panel li {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.panel ul {
  margin: 0 0 18px;
  padding-left: 1.1rem;
}

.panel li {
  margin-bottom: 0.35rem;
}

kbd {
  display: inline-block;
  min-width: 1.4em;
  padding: 0.1em 0.4em;
  border-radius: 5px;
  border: 1px solid rgba(232, 230, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
  color: var(--good);
  font-size: 0.8em;
  text-align: center;
}

footer {
  margin-top: 18px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.82rem;
}

code {
  color: var(--gold);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
}

@media (max-width: 980px) {
  main {
    grid-template-columns: 1fr;
  }
}