:root {
  --login-surface: #ffffff;
  --login-border: rgba(4, 74, 120, 0.18);
  --login-shadow: 0 24px 60px rgba(4, 74, 120, 0.18);
  --login-text: #1b2430;
  --login-muted: #5b6b7a;
  --login-accent: rgba(4, 74, 120, 0.14);
}

.auth-body {
  background:
    radial-gradient(circle at top left, rgba(4, 74, 120, 0.12), rgba(248, 249, 250, 0.9) 60%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(233, 240, 248, 0.85));
  color: var(--login-text);
}

.auth-container {
  min-height: calc(100vh - 38px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem 2.5rem;
  position: relative;
  overflow: hidden;
}

.auth-container::before,
.auth-container::after {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(4, 74, 120, 0.12), rgba(4, 74, 120, 0));
  filter: blur(6px);
  opacity: 0.7;
  pointer-events: none;
}

.auth-container::before {
  top: -220px;
  left: -180px;
}

.auth-container::after {
  bottom: -240px;
  right: -160px;
}

.login-shell {
  position: relative;
  width: min(460px, 94vw);
  display: grid;
  gap: 0.75rem;
  z-index: 1;
}

.login-accent {
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(4, 74, 120, 0.85), rgba(4, 74, 120, 0.15));
  box-shadow: 0 8px 20px rgba(4, 74, 120, 0.2);
}

.login-card {
  background: var(--login-surface);
  border: 1px solid var(--login-border);
  border-radius: 18px;
  padding: 2.2rem 2rem 2rem;
  box-shadow: var(--login-shadow);
  position: relative;
  overflow: hidden;
}

.login-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 80% 0%, rgba(4, 74, 120, 0.08), transparent 55%);
  opacity: 0.9;
  pointer-events: none;
}

.login-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}

.login-mark {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  border: 1px solid var(--login-border);
  display: grid;
  place-items: center;
  background: var(--login-accent);
}

.login-mark img {
  width: 28px;
  height: 28px;
}

.login-header h2 {
  font-size: 1.5rem;
  margin: 0;
  color: var(--login-text);
}

.login-header p {
  margin: 0.1rem 0 0;
  color: var(--login-muted);
  font-size: 0.95rem;
}

.login-alert {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 0.9rem;
  border-radius: 10px;
  background: rgba(255, 229, 229, 0.8);
  color: #842029;
  font-size: 0.95rem;
  margin-bottom: 1.2rem;
  border: 1px solid rgba(132, 32, 41, 0.2);
  position: relative;
  z-index: 1;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  position: relative;
  z-index: 1;
}

.login-form label {
  font-size: 0.95rem;
  color: var(--login-text);
}

.login-form .form-control {
  border-radius: 10px;
  border: 1px solid var(--login-border);
  padding: 0.6rem 0.75rem;
  font-size: 1rem;
}

.password-field {
  position: relative;
}

.password-field .form-control {
  padding-right: 3rem;
}

.password-toggle {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--login-muted);
  padding: 0.25rem;
  cursor: pointer;
}

.password-toggle:focus {
  outline: none;
}

.password-toggle i {
  font-size: 1rem;
  line-height: 1;
}

.login-form .form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(4, 74, 120, 0.2);
}

.login-form .form-control.is-valid,
.login-form .form-control.is-invalid,
.login-form.was-validated .form-control:valid,
.login-form.was-validated .form-control:invalid {
  background-image: none;
  padding-right: 0.75rem;
}

.login-form .form-control.is-valid,
.login-form.was-validated .form-control:valid {
  border-color: #198754;
  box-shadow: 0 0 0 2px rgba(25, 135, 84, 0.15);
}

.login-form .form-control.is-invalid,
.login-form.was-validated .form-control:invalid {
  border-color: #dc3545;
  box-shadow: 0 0 0 2px rgba(220, 53, 69, 0.15);
}

.login-submit {
  margin-top: 0.6rem;
  padding: 0.7rem 1rem;
  font-weight: 600;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.login-help {
  margin: 1.25rem 0 0;
  color: var(--login-muted);
  font-size: 0.9rem;
  text-align: center;
  position: relative;
  z-index: 1;
}

/* The operator login's Location field is a <select>; keep it the same height
   and shape as the text inputs beside it. */
.login-form select.form-control {
  height: auto;
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2364748b'%3e%3cpath d='M8 11 3 6h10z'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 14px;
  padding-right: 2.25rem;
}

.login-help a {
  color: var(--primary-color);
  font-weight: 600;
  text-decoration: none;
}

.login-help a:hover {
  text-decoration: underline;
}

@media screen and (max-width: 768px) {
  .login-card {
    padding: 1.6rem;
  }
}