:root { --accent: #ffcc33; }
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }

body {
  min-height: 100vh;
  font-family: "Trebuchet MS", "Segoe UI", Verdana, sans-serif;
  color: #fff;
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 204, 51, 0.18), transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(0, 200, 255, 0.18), transparent 45%),
    linear-gradient(135deg, #1b1464, #3a1c8c);
}

.hero { text-align: center; padding: 28px 16px 12px; }
.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.4rem);
  color: var(--accent);
  text-shadow: 0 3px 0 rgba(0, 0, 0, 0.25);
}
.hero p { margin: 6px 0 0; font-size: clamp(1rem, 2vw, 1.3rem); opacity: 0.9; }

.tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; padding: 12px 16px; }
.tab {
  font: inherit;
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: bold;
  color: #fff;
  background: hsl(var(--h), 70%, 42%);
  border: 4px solid transparent;
  border-radius: 16px;
  padding: 12px 22px;
  cursor: pointer;
  box-shadow: 0 5px 0 rgba(0, 0, 0, 0.3);
  transition: transform 0.1s;
}
.tab:hover { transform: translateY(-2px); }
.tab:focus-visible { outline: 4px solid #fff; outline-offset: 3px; }
.tab[aria-pressed="true"] { border-color: #fff; background: hsl(var(--h), 75%, 50%); }

.content { max-width: 1000px; margin: 0 auto; padding: 8px 16px 40px; }

.unit {
  margin-top: 18px;
  padding: 18px 20px 22px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 22px;
}
.unit h2 { margin: 0 0 14px; font-size: clamp(1.15rem, 2.4vw, 1.6rem); }

.games { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
.game {
  display: block;
  padding: 16px 18px;
  font-size: 1.1rem;
  font-weight: bold;
  color: #fff;
  text-decoration: none;
  background: hsl(var(--h), 70%, 42%);
  border-radius: 16px;
  box-shadow: 0 5px 0 rgba(0, 0, 0, 0.3);
  transition: transform 0.1s;
}
.game:hover { transform: translateY(-3px) rotate(-0.6deg); }
.game:focus-visible { outline: 4px solid #fff; outline-offset: 3px; }

.empty { margin-top: 24px; text-align: center; font-size: 1.15rem; opacity: 0.85; }

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