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

body {
  background: #0B1120;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  font-family: 'Segoe UI', sans-serif;
  color: white;
}

.app {
  width: 100%;
  max-width: 420px;
  height: 100vh;
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at top, #1E3A8A, #0F172A);
}

.screen {
  position: absolute;
  inset: 0;
  display: none;
  padding: 30px 20px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.screen.active {
  display: flex;
}

#identityScreen {
  animation: identityIntro 0.6s ease;
}

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