/* Modern minimal facelift without breaking Bootstrap 3/AdminLTE */
:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --bg1: #0f172a;
  --bg2: #1e293b;
  --card-bg: #ffffff;
}

body.login-modern {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--bg1) 0%, var(--bg2) 60%);
  color: #0f172a;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  align-items: center;
}

.login-box {
  width: 100%;
  max-width: 420px;
  margin: 40px auto;
}

.login-box .login-box-body {
  background: var(--card-bg);
  border-radius: 14px;
  box-shadow: 0 20px 40px rgba(2, 6, 23, 0.25);
  padding: 28px 26px 26px;
  border: 0;
}

.login-box .login-box-msg {
  font-weight: 700;
  font-size: 18px;
  color: #0f172a;
  margin-bottom: 18px;
}

.login-box img {
  filter: drop-shadow(0 6px 16px rgba(2, 6, 23, 0.25));
  margin-bottom: 6px;
}

.form-control {
  height: 44px;
  border-radius: 10px;
  border: 1px solid #e5e7eb;
  transition: all .2s ease;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  border-radius: 10px;
  height: 44px;
  font-weight: 600;
  transition: all .2s ease;
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
}

/* Make the Sign In button full-width and rounded */
.login-box .login-submit {
  display: block;
  width: 100%;
  border-radius: 12px !important;
  height: 46px;
}

.alert {
  border: 0;
  border-radius: 10px;
  box-shadow: 0 10px 24px rgba(2, 6, 23, 0.12);
}

h2, h3 {
  color: #e5e7eb;
}

@media (max-width: 480px) {
  .login-box { max-width: 92%; }
  .login-box .login-box-body { padding: 22px 18px; }
}