body {
  font-family: "Poppins", sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  margin: 0;
}

.container {
  width: 100%;
  max-width: 15rem;
  background-color: #ffffff;
  padding: 1.5rem;
  border-radius: 1rem;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.hd {
  text-align: center;
  margin-bottom: 1.5rem;
  font-size: 1.125rem;
  font-weight: 500;
  color: #000000;
}

.block {
  margin-bottom: 1.5rem;
}

.block input[type="number"] {
  width: 100%;
  padding: 0.75rem 1rem;
  text-align: center;
  font-size: 1.125rem;
  color: #374151;
  border: 1px solid #d1d5db;
  border-radius: 0.5rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.block input[type="number"]:focus {
  outline: none;
  border-color: #4f46e5;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.4);
}

.submitbtn {
  margin-top: 1rem;
}

.submit {
  width: 100%;
  background-color: #4f46e5;
  color: #ffffff;
  font-weight: 600;
  padding: 0.75rem 1rem;
  border: none;
  border-radius: 0.5rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  transition: transform 0.15s ease, background-color 0.15s ease,
    box-shadow 0.15s ease;
  cursor: pointer;
}

.submit:hover {
  background-color: #4338ca;
  transform: scale(1.05);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.submit:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.5);
}

@media (min-width: 768px) {
  .container {
    max-width: 28rem;
  }
}
