:root {
  --bg0: #0b1220;
  --bg1: #121c2f;
  --ink: #e8eef9;
  --muted: #9aa8c0;
  --accent: #3ee0a9;
  --accent2: #5b8cff;
  --line: rgba(232, 238, 249, 0.12);
  --font-display: "Trebuchet MS", "Segoe UI", sans-serif;
  --font-body: "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(1200px 600px at 10% -10%, #1a3a55 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #163528 0%, transparent 50%),
    linear-gradient(180deg, var(--bg0), var(--bg1) 40%, #0a101a);
}

a { color: inherit; text-decoration: none; }
.top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 1.25rem; border-bottom: 1px solid var(--line);
  position: sticky; top: 0; backdrop-filter: blur(10px);
  background: rgba(11, 18, 32, 0.72); z-index: 10;
}
.brand { font-family: var(--font-display); font-weight: 800; letter-spacing: 0.02em; }
.top nav { display: flex; gap: 1rem; color: var(--muted); font-size: 0.95rem; }
.top nav a:hover { color: var(--ink); }

main { width: min(980px, 100%); margin: 0 auto; padding: 1.25rem; }
.hero {
  min-height: 62vh; display: grid; align-content: end; gap: 0.75rem;
  padding: 2.5rem 0 2rem;
  background:
    linear-gradient(180deg, transparent, rgba(11,18,32,0.55) 55%, rgba(11,18,32,0.9)),
    radial-gradient(circle at 70% 30%, rgba(94,140,255,0.25), transparent 45%);
}
.brand-mark {
  margin: 0; font-family: var(--font-display); font-size: clamp(2.4rem, 8vw, 4.5rem);
  font-weight: 900; letter-spacing: -0.03em; line-height: 0.95; color: var(--accent);
}
.hero h1 {
  margin: 0; font-family: var(--font-display); font-weight: 700;
  font-size: clamp(1.35rem, 3.6vw, 2rem); max-width: 18ch;
}
.lede { margin: 0; color: var(--muted); max-width: 36ch; line-height: 1.45; }
.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 0.5rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.75rem 1.1rem; border-radius: 0.55rem; font-weight: 700;
  border: 1px solid transparent;
}
.btn.primary { background: var(--accent); color: #062218; }
.btn.ghost { border-color: var(--line); color: var(--ink); }

.block { margin: 2.5rem 0; }
.block h2 { margin: 0 0 0.35rem; font-family: var(--font-display); font-size: 1.45rem; }
.sub { margin: 0 0 1rem; color: var(--muted); }
.grid {
  display: grid; gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.game {
  display: grid; gap: 0.35rem; padding: 1rem;
  border: 1px solid var(--line); border-radius: 0.85rem;
  background: rgba(255,255,255,0.03);
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.game:hover { border-color: rgba(62,224,169,0.45); transform: translateY(-2px); }
.tag {
  width: fit-content; font-size: 0.72rem; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--accent2);
}
.game strong { font-size: 1.1rem; }
.game span:last-child { color: var(--muted); font-size: 0.92rem; }

.ad-slot {
  margin: 1.25rem 0; min-height: 90px; display: grid; place-items: center;
  border: 1px dashed rgba(154,168,192,0.35); color: #60708a; font-size: 0.85rem;
  border-radius: 0.5rem; background: rgba(0,0,0,0.15);
}

.panel {
  width: min(420px, 100%); margin: 1rem auto; padding: 1rem;
  border: 1px solid var(--line); border-radius: 1rem;
  background: rgba(0,0,0,0.25);
}
.score { text-align: center; color: var(--muted); margin-bottom: 0.5rem; }
canvas, .play-area {
  width: 100%; display: block; border-radius: 0.75rem; background: #071018;
  touch-action: none; user-select: none;
}
.hint { text-align: center; color: var(--muted); font-size: 0.9rem; margin-top: 0.75rem; }

.tool { display: grid; gap: 0.75rem; max-width: 520px; }
.tool label { color: var(--muted); font-size: 0.9rem; }
.tool input, .tool select, .tool textarea, .tool button {
  width: 100%; padding: 0.7rem 0.8rem; border-radius: 0.5rem;
  border: 1px solid var(--line); background: rgba(0,0,0,0.3); color: var(--ink);
  font: inherit;
}
.tool button { background: var(--accent); color: #062218; font-weight: 700; cursor: pointer; border: 0; }
.out {
  padding: 0.85rem; border-radius: 0.5rem; background: rgba(62,224,169,0.08);
  border: 1px solid rgba(62,224,169,0.25); word-break: break-word;
}

footer {
  margin-top: 3rem; padding: 1.5rem 1.25rem 2.5rem;
  border-top: 1px solid var(--line); color: var(--muted); text-align: center;
}
footer a { text-decoration: underline; text-underline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  .game { transition: none; }
}