body {
  margin: 0;
  font-family: "Arial", sans-serif;
  background: rgba(0,0,0,0.8) url('https://wallpapercave.com/wp/wp14925711.webp') center center / cover no-repeat fixed;
  color: #fff;
  height: 100vh;
  overflow-y: scroll;
  scroll-behavior: smooth;
}
/* Floating Button Styles */
#sensiBtn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: #ff5555;
  color: white;
  border: none;
  border-radius: 50px;
  padding: 14px 20px;
  font-size: 16px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  transition: background-color 0.3s, transform 0.3s;
  z-index: 1000;
}

#sensiBtn:hover {
  background-color: #ff3333;
  transform: scale(1.05);
}


.container {
  max-width: 600px;
  margin: 80px auto;
  background: rgba(0,0,0,0.7);
  border-radius: 20px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 0 30px rgba(0,0,0,0.6);
  animation: fadein 1s ease-in-out;
}

h1 { font-size: 2rem; margin-bottom: 30px; }

.input-container { margin: 20px 0; }

input, select {
  width: 100%;
  padding: 15px;
  border-radius: 12px;
  border: none;
  font-size: 1rem;
  outline: none;
}

button {
  background-color: #00ffcc;
  border: none;
  padding: 15px 30px;
  font-size: 1rem;
  border-radius: 12px;
  cursor: pointer;
  color: #000;
  transition: transform 0.2s ease;
}

button:hover { transform: scale(1.1); }

.hidden { display: none; }

#result {
  margin-top: 30px;
  padding: 20px;
  background: rgba(0,0,0,0.5);
  border-radius: 15px;
  animation: slideup 0.5s ease;
}

.dropdown {
  background: #333;
  border-radius: 10px;
  max-height: 150px;
  overflow-y: auto;
  text-align: left;
  margin-top: 5px;
}

.dropdown div {
  padding: 10px;
  cursor: pointer;
}

.dropdown div:hover {
  background: #555;
}

@keyframes fadein { from {opacity: 0;} to {opacity: 1;} }
@keyframes slideup { from {transform: translateY(20px); opacity: 0;} to {transform: translateY(0); opacity: 1;} }