* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #1e1e1e;
  color: #eee;
  padding: 40px 20px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.container {
  max-width: 820px;
  width: 100%;
  margin: 0 auto;
  background: rgba(30, 30, 30, 0.9);
  padding: 40px 30px;
  border-radius: 12px;
  box-shadow: 0 0 40px rgba(0,0,0,0.7);
  border: 1px solid #333;
  flex: 1;
}
h1 {
  font-size: 32px;
  color: #ffd700;
  border-bottom: 2px solid #ffd700;
  padding-bottom: 12px;
  margin-bottom: 24px;
}
h2 {
  font-size: 22px;
  color: #66b0ff;
  margin-top: 28px;
  margin-bottom: 12px;
}
h3 {
  font-size: 18px;
  color: #ccc;
  margin-top: 20px;
  margin-bottom: 8px;
}
p {
  margin-bottom: 16px;
  color: #ccc;
}
ul {
  margin: 12px 0 20px 20px;
  color: #ccc;
}
ul li {
  margin-bottom: 8px;
}
.highlight {
  color: #ffd700;
  font-weight: bold;
}
.mode-badge {
  display: inline-block;
  background: #2a2a2a;
  border: 1px solid #555;
  border-radius: 20px;
  padding: 4px 14px;
  font-size: 14px;
  font-weight: bold;
  margin-right: 8px;
}
.mode-ecosystem { color: #66b0ff; border-color: #66b0ff; }
.mode-classic { color: #ffd700; border-color: #ffd700; }
.mode-minesweeper { color: #ff6b6b; border-color: #ff6b6b; }

.langs {
  margin-bottom: 18px;
  font-size: 13px;
}
.langs a {
  color: #888;
  text-decoration: none;
  margin-right: 10px;
}
.langs a:hover { color: #ccc; text-decoration: underline; }
.langs a.active { color: #ffd700; font-weight: bold; }

.btn-play {
  display: inline-block;
  background: #6c5ce7;
  color: #fff;
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 18px;
  margin-top: 20px;
  transition: background 0.2s, transform 0.1s;
}
.btn-play:hover {
  background: #5a4bd1;
  transform: scale(1.02);
}
.btn-play:active {
  transform: scale(0.98);
}
.back-link {
  display: inline-block;
  margin-top: 28px;
  color: #66b0ff;
  text-decoration: none;
  font-size: 14px;
}
.back-link:hover {
  text-decoration: underline;
}
.badge {
  display: inline-block;
  background: #ff6b6b;
  color: #fff;
  padding: 2px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: bold;
  margin-left: 10px;
  vertical-align: middle;
}

#footer {
  width: 100%;
  max-width: 820px;
  margin-top: 20px;
  text-align: center;
  font-size: 11px;
  color: #888;
  background: rgba(0,0,0,0.3);
  padding: 8px 12px;
  border-radius: 8px;
  backdrop-filter: blur(4px);
  border: 1px solid #333;
  pointer-events: none;
}
#footer span {
  pointer-events: auto;
}
#footer a {
  color: #66b0ff;
  text-decoration: none;
}
#footer a:hover {
  text-decoration: underline;
}

@media (max-width: 600px) {
  body { padding: 20px 10px; }
  .container { padding: 20px 16px; }
  h1 { font-size: 24px; }
  h2 { font-size: 18px; }
  h3 { font-size: 16px; }
  #footer {
    font-size: 10px;
    padding: 6px 10px;
  }
}