body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: linear-gradient(160deg, #0b3d2e, #000);
  color: #fff;
}

.center {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.card {
  background: rgba(0,0,0,0.65);
  padding: 30px;
  border-radius: 18px;
  width: 90%;
  max-width: 380px;
  text-align: center;
  box-shadow: 0 0 25px rgba(46,204,113,0.4);
}

h1 {
  color: #2ecc71;
  font-size: 36px;
}

h2 {
  margin: 10px 0;
}

.ayat {
  font-size: 14px;
  opacity: 0.8;
}

input {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: none;
  margin-top: 15px;
}

button {
  width: 100%;
  padding: 12px;
  margin-top: 15px;
  background: #2ecc71;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  font-weight: bold;
}

button:hover {
  background: #27ae60;
}

#error {
  margin-top: 10px;
  color: #ff7675;
}