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

/* Animated Gradient Background */
body {
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(-45deg, #1d2b64, #f8cdda, #0f2027, #2c5364);
  background-size: 400% 400%;
  animation: gradientBG 15s ease infinite;
  color: #ffffffcc;
  min-height: 100vh;
  padding: 40px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Gradient Animation */
@keyframes gradientBG {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

h1 {
  font-size: 3rem;
  margin-bottom: 30px;
  color: #fff;
  text-align: center;
  background: linear-gradient(to right, #ffecd2, #fcb69f);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeInDown 1s ease;
}

/* Buttons Styling */
button {
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid #ffffff55;
  color: #fff;
  padding: 12px 24px;
  margin: 10px;
  font-size: 1.1rem;
  cursor: pointer;
  border-radius: 12px;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 15px rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease-in-out;
  position: relative;
  overflow: hidden;
}

button::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  border-radius: 50%;
  transition: 0.5s;
}

button:hover::before {
  width: 300%;
  height: 300%;
}

button:hover {
  border-color: #fff;
  transform: scale(1.05);
}

h2 {
  font-size: 1.8rem;
  margin-top: 40px;
  margin-bottom: 10px;
}

/* Output Box */
pre#output {
  background: rgba(255, 255, 255, 0.1);
  padding: 20px;
  width: 90%;
  max-width: 700px;
  border-radius: 15px;
  font-family: 'Courier New', monospace;
  font-size: 1rem;
  white-space: pre-wrap;
  overflow-y: auto;
  max-height: 320px;
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  animation: fadeIn 1s ease;
  scroll-behavior: smooth;
}

/* Animations */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Responsive Design */
@media (max-width: 600px) {
  h1 {
    font-size: 2rem;
  }

  button {
    font-size: 1rem;
    padding: 10px 18px;
  }

  pre#output {
    font-size: 0.9rem;
  }
}