* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Segoe UI", Tahoma, Arial, sans-serif;
  background: linear-gradient(135deg, #2b0a5c, #7b1fa2);
  color: #222;
  padding: 16px;
}
.card {
  width: 100%;
  max-width: 400px;
  background: #fff;
  border-radius: 16px;
  padding: 28px 22px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
}
h1 { margin: 0 0 6px; color: #7b1fa2; font-size: 32px; }
.sub { margin: 0 0 22px; color: #555; }
label { display: block; margin-bottom: 8px; font-weight: 600; }
.phone {
  display: flex;
  direction: ltr;
  border: 2px solid #ddd;
  border-radius: 10px;
  overflow: hidden;
}
.prefix { padding: 12px; background: #f2f2f2; font-weight: 600; }
input {
  flex: 1;
  width: 100%;
  padding: 12px;
  border: 0;
  font-size: 18px;
  outline: none;
}
.pin {
  border: 2px solid #ddd;
  border-radius: 10px;
  text-align: center;
  letter-spacing: 12px;
  font-size: 26px;
}
button {
  width: 100%;
  margin-top: 16px;
  padding: 14px;
  border: 0;
  border-radius: 10px;
  background: #e91e63;
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  cursor: pointer;
}
button:disabled { opacity: .6; cursor: wait; }
.msg { min-height: 20px; margin: 12px 0 0; font-size: 14px; }
.msg.err { color: #d32f2f; }
.msg.ok { color: #2e7d32; }
.terms { margin-top: 20px; font-size: 12px; color: #777; line-height: 1.7; }