:root {
  --bg: #070a12;
  --panel: #101725;
  --line: rgba(139, 205, 255, 0.36);
  --text: #eef6ff;
  --muted: #9eb1c7;
  --accent: #6bd8ff;
  --gold: #e6c66a;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: Arial, "Noto Sans KR", sans-serif;
  background:
    radial-gradient(circle at 50% 0%, rgba(64, 120, 180, 0.26), transparent 34rem),
    linear-gradient(180deg, #05070d 0%, #0a0f1b 46%, #080a10 100%);
}

.site-header {
  padding: 48px 20px 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(90deg, rgba(230, 198, 106, 0.08), transparent 30%, rgba(107, 216, 255, 0.08)),
    #050812;
}

.header-inner {
  width: min(1040px, 100%);
  margin: 0 auto;
}

h1 {
  margin: 0;
  font-size: clamp(2.2rem, 7vw, 4.8rem);
  line-height: 1.05;
}

.subtitle {
  margin: 10px 0 0;
  color: var(--accent);
  font-size: clamp(1.05rem, 3vw, 1.55rem);
}

.intro {
  max-width: 720px;
  margin: 18px 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.game-zone {
  display: flex;
  justify-content: center;
  padding: 34px 14px 42px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 44px 44px;
}

.arcade-frame {
  width: min(560px, calc(100vw - 28px));
  aspect-ratio: 2 / 3;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #05070c;
  box-shadow:
    0 0 24px rgba(107, 216, 255, 0.34),
    0 0 70px rgba(45, 106, 173, 0.24),
    inset 0 0 18px rgba(255, 255, 255, 0.08);
}

#gameCanvas {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 4px;
  background: #080b10;
  touch-action: none;
}

.report-placeholders {
  width: min(1040px, calc(100% - 28px));
  margin: 0 auto;
  padding: 18px 0 56px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.info-card {
  min-height: 180px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: rgba(16, 23, 37, 0.86);
}

.info-card h2 {
  margin: 0 0 14px;
  color: var(--text);
  font-size: 1.12rem;
}

.info-card p {
  margin: 0 0 10px;
  color: var(--muted);
  line-height: 1.68;
}

.info-card p:last-child {
  margin-bottom: 0;
}

.control-list {
  display: grid;
  gap: 10px;
  margin: 0;
}

.control-list div {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.control-list div:last-child {
  border-bottom: 0;
}

.control-list dt {
  color: var(--gold);
  font-weight: 700;
}

.control-list dd {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.aircraft-panel {
  grid-column: 1 / -1;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(16, 23, 37, 0.88);
  overflow: hidden;
}

.aircraft-panel summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 72px;
  padding: 20px;
  cursor: pointer;
  list-style: none;
}

.aircraft-panel summary::-webkit-details-marker {
  display: none;
}

.aircraft-panel summary span {
  color: var(--text);
  font-size: 1.12rem;
  font-weight: 700;
}

.aircraft-panel summary small {
  color: var(--gold);
  font-size: 0.92rem;
}

.aircraft-panel summary::after {
  content: "+";
  display: grid;
  place-items: center;
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  border: 1px solid rgba(107, 216, 255, 0.45);
  border-radius: 50%;
  color: var(--accent);
  font-size: 1.2rem;
}

.aircraft-panel[open] summary::after {
  content: "-";
}

.aircraft-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 0 20px 22px;
}

.aircraft-side {
  min-width: 0;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: rgba(5, 8, 18, 0.42);
}

.aircraft-side h2 {
  margin: 0 0 14px;
  font-size: 1rem;
}

.aircraft-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.aircraft-grid figure {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  align-items: center;
  gap: 14px;
  margin: 0;
  min-width: 0;
  min-height: 136px;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.24);
}

.aircraft-grid img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  filter: drop-shadow(0 10px 18px rgba(0, 0, 0, 0.36));
}

.aircraft-grid figcaption {
  display: grid;
  gap: 6px;
  margin-top: 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.48;
}

.aircraft-grid figcaption strong {
  color: var(--accent);
  font-size: 0.88rem;
}

.aircraft-grid figcaption span {
  overflow-wrap: anywhere;
}

@media (max-width: 720px) {
  .site-header {
    padding-top: 34px;
  }

  .report-placeholders {
    grid-template-columns: 1fr;
  }

  .control-list div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .aircraft-panel summary {
    align-items: flex-start;
    flex-direction: column;
  }

  .aircraft-columns {
    grid-template-columns: 1fr;
  }

  .aircraft-grid {
    grid-template-columns: 1fr;
  }

  .aircraft-grid figure {
    grid-template-columns: 104px minmax(0, 1fr);
    min-height: 118px;
  }
}