body {
  margin: 0;
  font-family: Arial;
  background: #05010a;
  color: white;
}

/* SCREEN SYSTEM */
.screen {
  display: none;
  width: 100%;
  height: 100vh;
  justify-content: center;
  align-items: center;
}

.screen.active {
  display: flex;
}

/* NEON ANIMATION */
@keyframes glow {
  0% { box-shadow: 0 0 10px #a855f7; }
  50% { box-shadow: 0 0 30px #d946ef; }
  100% { box-shadow: 0 0 10px #a855f7; }
}

/* BOX */
.box, .menu {
  background: black;
  padding: 25px;
  border-radius: 15px;
  border: 2px solid #a855f7;
  animation: glow 2s infinite;
  width: 420px;
  text-align: center;
}

/* INPUT */
input {
  width: 100%;
  padding: 10px;
  margin-top: 10px;
  background: #111;
  color: white;
  border: none;
  border-radius: 8px;
}

/* BUTTON */
button {
  margin-top: 10px;
  width: 100%;
  padding: 10px;
  background: #a855f7;
  border: none;
  cursor: pointer;
  font-weight: bold;
}

/* TABS */
.tabs {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
}

.tabs button {
  width: 48%;
}

/* CONTENT */
.tab {
  display: none;
}

.tab.active {
  display: block;
}

/* SCROLL */
.scroll {
  max-height: 250px;
  overflow-y: auto;
}

/* LINKS */
a {
  display: block;
  margin: 10px 0;
  color: #d946ef;
  text-decoration: none;
}

a:hover {
  color: white;
}

#error {
  color: red;
}