* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'Be Vietnam Pro', sans-serif;
  height: 100vh;
  background: url('background.jpeg') no-repeat center/cover fixed;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.hero {
  text-align: center;
  padding: 40px 20px;
  background-color: rgba(255,255,255,0.3);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 25px;
  max-width: 90%;
  margin: auto;
}

.hero h1 {
  margin-bottom: .5em;
  font-size: 2.5rem;
  color: #000;
}
.hero p {
  margin-bottom: 1.5em;
  font-size: 1.2rem;
  color: #333;
}

.buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.btn {
  position: relative;
  display: inline-block;
  padding: .8em 1.5em;
  background-color: rgba(255,255,255,0.2);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border-radius: 25px;
  color: #000;
  text-decoration: none;
  font-weight: 500;
  transition: background-color .3s ease;
}
.btn:hover {
  background-color: rgba(255,255,255,0.3);
}

/* Tooltip on hover */
.btn::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  padding: .4em .8em;
  background-color: rgba(255,255,255,0.3);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 25px;
  font-size: .9rem;
  color: #000;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease, transform .3s ease;
}
.btn:hover::before {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Toast “IP Copied” */
.copy-toast {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  padding: .4em .8em;
  background-color: rgba(255,255,255,0.3);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 25px;
  font-size: .9rem;
  color: #000;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease, transform .3s ease;
}
.btn.show-toast .copy-toast {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 600px) {
  .hero h1 { font-size: 2rem; }
  .hero p  { font-size: 1rem; }
  .btn     { padding: .6em 1.2em; }
  .btn::before,
  .copy-toast { font-size: .8rem; }
}