:root {
  --navy-dark: #0F172A;
  --navy: #192339;
  --white: #FFFFFF;
  --light: #E5E7EB;
  --black: #000000;
}

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

body {
  font-family: 'Poppins', sans-serif;
  background: var(--navy);
  color: var(--white);
  display: block;
  min-height: 100vh;
    padding: 60px 20px 40px;
}


header {
  background: var(--navy);
  text-align: center;
  padding: 60px 20px 40px;
  border-bottom: 4px solid var(--navy);
}

header h1 {
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 700;
  text-align: center;
}

.main {
  background: var(--light);
  padding: 60px 20px;
  display: grid;
  justify-content: center;
  gap: 40px;
}


.card {
  background: var(--navy);
  color: var(--white);
  width: 160px;
  height: 120px;
  border-radius: 20px;
  border: 4px solid var(--black);
  display: block;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  text-align: center;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.25);
}


footer {
  margin-top: auto;
  background: var(--navy);
  text-align: center;
  padding: 16px;
  font-size: 14px;
  opacity: 0.8;
}


@media (max-width: 600px) {
  header {
    padding: 40px 20px 20px;
  }

  .main {
    align-items: center;
  }

  .card {
    width: 260px;
    height: 180px;
    border-radius: 24px;
    font-size: 22px;
  }

  .nav{
   margin-top: auto;
  background: var(--navy);
  text-align: center;
  padding: 10px;
  font-size: 8px;
  opacity: 0.8;
  }

        .grid-item img{
            width: 50%;
            height: 50%;
            object-position: center;
            object-fit: contain;


        }
}