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

body {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

/* Container */
.login-container {
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
}

/* Card */
.login-card {
  background: #fff;
  border-radius: 14px;
  padding: 32px 24px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.18);
  animation: slideIn 400ms ease;
}

@keyframes slideIn {
  from { transform: translateY(18px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.login-card h2 {
  font-size: 1.25rem;
  color: #0b1220;
  margin-bottom: 18px;
}

/* Inputs */
.login-input {
  height: 44px;
  border-radius: 10px;
  border: 1px solid #e9ecef;
  padding: 8px 12px;
  transition: all 0.18s ease;
  background: #fff;
}
.login-input:focus {
  outline: none;
  border-color: rgba(63,81,255,0.9);
  box-shadow: 0 6px 20px rgba(63,81,255,0.08);
}

/* Button */
.btn-login {
  background: linear-gradient(90deg, #3f51ff, #5f86ff);
  color: #fff;
  border: none;
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 600;
  height: 44px;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.btn-login:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(63,81,255,0.12);
}

/* Alert */
.alert {
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 0.95rem;
}

/* Responsive */
@media (max-width: 576px) {
  .login-card {
    padding: 20px 16px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
  }
  .login-card h2 { font-size: 1.1rem; }
  .btn-login { height: 46px; font-size: 0.98rem;}
}