* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  overflow: hidden; touch-action: none; user-select: none; -webkit-user-select: none; }
body { display: flex; align-items: center; justify-content: center; padding-bottom: var(--dock, 0px); }
#arena { display: block; background: var(--bg); }

.overlay { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center;
  background: rgba(5, 7, 12, .78); z-index: 20; padding: 16px; }
body[data-status="menu"] #overlay { background: rgba(5, 7, 12, .4); }
.overlay[hidden] { display: none; }

.panel { width: min(440px, 100%); text-align: center; padding: 30px 26px 24px;
  background: linear-gradient(160deg, rgba(20, 28, 44, .94), rgba(11, 15, 24, .94));
  border: 1px solid var(--line); border-radius: 18px; backdrop-filter: blur(6px);
  box-shadow: 0 0 0 1px rgba(34, 228, 255, .06), 0 18px 60px rgba(0, 0, 0, .55), 0 0 60px rgba(34, 228, 255, .07); }
.badge { display: inline-block; margin-bottom: 12px; padding: 3px 12px; border-radius: 99px; font-size: .72rem;
  letter-spacing: .08em; text-transform: uppercase; color: var(--muted); border: 1px solid var(--line); }
.badge[hidden] { display: none; }
.panel h1 { margin: 0 0 6px; font-size: clamp(2.1rem, 8vw, 2.9rem); line-height: 1.05; letter-spacing: .04em; text-transform: uppercase;
  background: linear-gradient(90deg, var(--cyan), var(--magenta)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.tagline { margin: 0 0 22px; color: var(--muted); letter-spacing: .03em; }
.hint { margin: 16px 0 0; font-size: .8rem; color: var(--muted); line-height: 1.5; }
#hint-touch { display: none; }
.summary { margin: 0 0 20px; color: var(--orange); font-weight: 600; line-height: 1.5; }
.summary[hidden], .tagline[hidden] { display: none; }
button { font: inherit; cursor: pointer; }
button.primary { width: 100%; padding: 14px 16px; border-radius: 12px; border: 0; font-size: 1.05rem;
  background: linear-gradient(90deg, var(--cyan), #5af0c8); color: #04141a; font-weight: 700; letter-spacing: .02em;
  box-shadow: 0 6px 24px rgba(34, 228, 255, .25); transition: transform .12s, box-shadow .12s; }
button.primary:hover { transform: translateY(-1px); box-shadow: 0 10px 30px rgba(34, 228, 255, .35); }
button:focus-visible { outline: 2px solid var(--magenta); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }