/* CSS Reset and Base Variables */
:root {
  --bg-color: #0d1117;
  --text-color: #c9d1d9;
  --heading-color: #58a6ff;
  --accent: #238636;
  --accent-hover: #2ea043;
  --card-bg: #161b22;
  --border-color: #30363d;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  font-size: 16px;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header & Nav */
.site-header {
  border-bottom: 1px solid var(--border-color);
  background-color: var(--card-bg);
  padding: 15px 0;
  margin-bottom: 40px;
}

.nav-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-bar h1 {
  color: var(--heading-color);
  font-size: 1.5rem;
}

.nav-bar nav a {
  color: var(--text-color);
  text-decoration: none;
  margin-left: 15px;
  font-weight: 500;
}

.nav-bar nav a:hover {
  color: var(--heading-color);
}

/* Main Content */
section {
  margin-bottom: 50px;
}

h2, h3 {
  color: var(--text-color);
  margin-bottom: 15px;
  font-weight: 600;
}

h2 { font-size: 1.8rem; }
h3 { font-size: 1.4rem; }

p {
  margin-bottom: 20px;
  color: #8b949e;
}

/* Game UI */
.game-section {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 30px;
  text-align: center;
}

.instructions {
  font-size: 0.95rem;
  margin-bottom: 25px;
}

.game-console {
  max-width: 350px;
  margin: 0 auto;
}

.game-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 20px;
  font-weight: bold;
  font-size: 1.1rem;
}

.game-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 25px;
}

.tile {
  background-color: var(--border-color);
  color: var(--heading-color);
  border: none;
  border-radius: 6px;
  height: 60px;
  font-size: 1.2rem;
  font-weight: bold;
  cursor: pointer;
  transition: background-color 0.2s;
}

.tile:hover {
  background-color: #484f58;
}

.tile.active {
  background-color: var(--accent);
  color: #fff;
}

.tile.disabled {
  background-color: var(--bg-color);
  color: transparent;
  cursor: default;
}

.btn {
  background-color: var(--accent);
  color: #fff;
  border: none;
  padding: 12px 24px;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn:hover {
  background-color: var(--accent-hover);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  margin-top: 50px;
  text-align: center;
}

.footer-links {
  margin-top: 10px;
}

.footer-links a {
  color: var(--heading-color);
  text-decoration: none;
  margin: 0 10px;
  font-size: 0.9rem;
}

@media (max-width: 600px) {
  .game-grid {
    gap: 5px;
  }
  .tile {
    height: 50px;
  }
}


/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}