header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 200px; 
  background: linear-gradient(to bottom, #000000 40%, #0560aa 80%, #7cd4ef 100%);
  z-index: 1000; 
}

body {
  padding-top: 200px; 
}

header .launch-button {
  position: absolute;      
  left: 50%;
  top: 75%;                
  transform: translate(-50%, -50%);
  display: inline-block;
  text-decoration: none;
  background-color: #aa0000;
  color: white;
  font-size: 20px;
  padding: 15px 60px 15px 30px; 
  border-radius: 10px;
  cursor: pointer;
  box-shadow: none;

  transition: transform 0.5s, background-color 0.1s, padding 0.5s, box-shadow 0.1s;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

header .launch-button:hover {
  background-color: #cc0000;
  box-shadow: 0 0 8px #ff0000;
}


header .launch-button:active {
  background-color: #750000;
  box-shadow: 0 0 2px #750000;
  transform: translate(-50%, -20%) scale(0.7);
  padding: 15px 30px; 
}


.launch-button .rocket {
  position: absolute;   
  top: 50%;             
  right: 40px;         
  transform-origin: center center;
  transition: transform 0.5s;
  pointer-events: none; 
}

.launch-button .rocket i {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: center center;
  font-size: 16px;
  line-height: 1;
  display: inline-block;
}

.launch-button .fa-rocket {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.launch-button .fa-burn {
  transform: translate(-50%, -15%) rotate(180deg) scale(0.1);
  color: orange;
  transition: transform 0.4s;
}

.launch-button:hover .fa-burn {
  transform: translate(-50%, -15%) rotate(180deg) scale(0.4);
}

.launch-button:active .fa-burn {
  transform: translate(-50%, 25%) rotate(180deg) scale(0.8);
}

.launch-button:hover .rocket {
  transform: scale(1.3);
}

.launch-button:active .rocket {
  transform: rotate(-15deg) translate(60px, -140px) scale(3.5);
}

.launch-button .label {
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: white;
  display: inline-block;
}

.launch-button:hover .label {
  color: orange;
  text-shadow: 0 0 3px rgba(255, 255, 0, 0.5);
}

@keyframes burn {
  from  { transform: rotate(-7deg); }
  33%   { transform: rotate(4deg);  }
  66%   { transform: rotate(-4deg); }
  to    { transform: rotate(7deg);  }
}


.launch-button:active .fa-burn::before {
  display: block; 
  transform-origin: center bottom;
  animation-name: burn;
  animation-duration: 0.1s;
  animation-iteration-count: infinite;
  animation-direction: alternate;
}