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

body {
  font-family: "Fira Code", monospace;
  background: linear-gradient(135deg, #0d1117, #161b22);
  color: #c9d1d9;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  min-height: 100vh;
  padding: 40px 20px;
}



h1 {
  color: #006400; /* Dark Green */
  font-size: 2.8rem;
  margin-bottom: 50px;
  text-align: center;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.6);
}


/* Grid container with fixed 6 columns */
.groups {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 25px;
  width: 100%;
  max-width: 1400px;
}

/* Card style */
.group-card {
  background: #1c2128;
  border: 2px solid #30363d;
  border-radius: 14px;
  padding: 30px 20px;
  text-align: center;
  font-size: 1.4rem;
  font-weight: 700;
  color: #c9d1d9;
  transition: all 0.3s ease-in-out;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0,0,0,0.4);
}

/* Hover effect */
.group-card:hover {
  background: #238636;
  color: #ffffff;
  transform: translateY(-6px) scale(1.05);
  border-color: #58a6ff;
  box-shadow: 0 12px 25px rgba(35, 134, 54, 0.6);
}

/* Active effect */
.group-card:active {
  transform: scale(0.98);
}

footer {
  margin-top: 50px;
  font-size: 1rem;
  color: #8b949e;
}