*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0d0d1a;
  --surface: #161628;
  --surface2: #1e1e36;
  --border: #2a2a4a;
  --text: #e0e0f0;
  --text-muted: #7070a0;
  --accent: #7c6af7;
  --accent-text: #fff;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  min-height: 100vh;
}

h1 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent);
}

/* Nav */
nav {
  width: 100%;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.15s;
}

nav a:hover { color: var(--text); }
nav .sep { color: var(--border); }
nav .current { color: var(--accent); font-weight: 600; }

/* Game page layout */
.game-wrapper {
  padding: 2rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  width: 100%;
}

/* Overlay */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  backdrop-filter: blur(4px);
}

.overlay.hidden { display: none; }

.overlay-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2.5rem 3rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.overlay-icon  { font-size: 4rem; }
.overlay-title { font-size: 1.8rem; font-weight: 800; }
.overlay-sub   { color: var(--text-muted); font-size: 1rem; }

.overlay-btn {
  margin-top: 0.5rem;
  padding: 0.7rem 2rem;
  border-radius: 10px;
  border: none;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  background: var(--accent);
  color: var(--accent-text);
  transition: filter 0.15s, transform 0.15s;
}

.overlay-btn:hover { filter: brightness(1.15); transform: scale(1.03); }

/* Footer */
footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}