body {
  font-family: Tahoma, sans-serif;
  background: radial-gradient(circle at top, #111 0%, #000 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  overflow: hidden;
}

/* باکس فرم */
.form-container {
  background: rgba(20, 20, 20, 0.7);
  backdrop-filter: blur(10px);
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 0 40px rgba(0, 255, 200, 0.5);
  width: 370px;
  text-align: center;
  animation: glow 3s infinite alternate;
}

h2 {
  margin-bottom: 25px;
  color: #0ff;
  font-size: 24px;
  text-shadow: 0 0 15px #0ff;
}

/* مراحل */
.form-step {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.5s ease;
  position: absolute;
  width: 100%;
}
.form-step.active {
  opacity: 1;
  transform: translateY(0);
  position: relative;
}

input, textarea {
  width: 100%;
  padding: 12px;
  margin-bottom: 18px;
  border-radius: 12px;
  border: none;
  font-size: 14px;
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  box-shadow: inset 0 0 10px rgba(0, 255, 200, 0.3);
}
input::placeholder, textarea::placeholder {
  color: #aaa;
}
input:focus, textarea:focus {
  outline: none;
  box-shadow: 0 0 15px #0ff;
}

/* دکمه */
button {
  width: 100%;
  padding: 12px;
  background: linear-gradient(90deg, #00ffcc, #0066ff);
  color: #fff;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  font-size: 16px;
  text-shadow: 0 0 10px rgba(0,0,0,0.7);
  box-shadow: 0 0 20px rgba(0, 255, 200, 0.6);
  transition: 0.3s;
}
button:hover {
  box-shadow: 0 0 30px #00ffcc, 0 0 60px #0066ff;
  transform: scale(1.05);
}

/* افکت نئون */
@keyframes glow {
  from { box-shadow: 0 0 20px rgba(0, 255, 200, 0.4); }
  to   { box-shadow: 0 0 40px rgba(0, 255, 200, 0.8); }
}