* {
  box-sizing: border-box;
  font-family: 'Inter', system-ui, sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(135deg, #0f1220, #1a1f3c);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.auth-box {
  width: 100%;
  max-width: 420px;
  background: #151932;
  padding: 35px;
  border-radius: 16px;
  box-shadow: 0 30px 80px rgba(0,0,0,.45);
}

.auth-box h1 {
  margin: 0 0 10px;
  font-size: 26px;
}

.auth-box p {
  color: #9ca3af;
  margin-bottom: 25px;
  font-size: 14px;
}

.auth-box input {
  width: 100%;
  padding: 14px;
  margin-bottom: 15px;
  border-radius: 10px;
  border: none;
  background: #0f1220;
  color: #fff;
}

.auth-box input::placeholder {
  color: #6b7280;
}

.auth-box button {
  width: 100%;
  padding: 14px;
  border-radius: 10px;
  border: none;
  background: linear-gradient(135deg, #6c5ce7, #7c6cff);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

.auth-box button:hover {
  opacity: .9;
}

.auth-links {
  margin-top: 20px;
  text-align: center;
  font-size: 14px;
}

.auth-links a {
  color: #a5b4fc;
  text-decoration: none;
}

.auth-links a:hover {
  text-decoration: underline;
}

.alert {
  background: #dc2626;
  padding: 10px;
  border-radius: 8px;
  margin-bottom: 15px;
  font-size: 14px;
}

.success {
  background: #16a34a;
}

.btn-login-back{
    display:inline-block;
    margin-top:20px;
    padding:10px 22px;
    background:#1e88e5;
    color:#fff;
    text-decoration:none;
    border-radius:8px;
    font-weight:600;
    transition:all .2s ease;
}
.btn-login-back:hover{
    background:#1565c0;
}