html, body {
  min-height: 100vh;
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  flex-direction: column;
  background: #2C2F33;
  font-family: Arial, sans-serif;
}

.navbar {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: 1.2rem 2rem;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  box-sizing: border-box;
  z-index: 1000;
}

body > div.container {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  flex: 1;
  flex-direction: column;
  gap: 2rem;
  margin-top: 80px;
}

.logo {
  width: clamp(220px, 35vw, 380px);
  max-width: 100%;
  object-fit: contain;
}

.request-fuel-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2.2rem 5.5rem;
  font-size: 2.2rem;
  font-weight: bold;
  color: white;
  background: #DC143C;
  border: none;
  border-radius: 12px;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 8px 24px rgba(220, 20, 60, 0.3);
}

.request-fuel-btn:hover {
  transform: translateY(-2px);
  background: #B22222;
  box-shadow: 0 12px 32px rgba(220, 20, 60, 0.4);
}

.request-fuel-btn:active {
  transform: translateY(0);
}