/* Superadmin Login Page - Modern & Secure */
.login-card {
  max-width: 450px;
  margin: 0 auto;
  box-shadow: var(--glow);
  border-radius: var(--radius-lg);
  overflow: hidden;
  animation: fadeIn 0.4s ease-out;
}

.login-card .card-header {
  background: linear-gradient(135deg, var(--card-header-bg), rgba(255, 215, 0, 0.05));
  color: var(--card-header-text);
  font-size: 1.5rem;
  font-weight: 800;
  text-align: center;
  padding: 2rem 1.5rem 1.5rem;
  border-bottom: 2px solid var(--card-border);
  position: relative;
}

.login-card .card-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--btn-accent-bg), transparent);
}

.login-card .card-body {
  background-color: var(--card-body-bg);
  color: var(--card-body-text);
  padding: 2rem;
}

.login-card .form-label-modern {
  display: flex;
  align-items: center;
  margin-bottom: 0.5rem;
}

.login-card .form-control-modern {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid var(--card-border);
  border-radius: var(--radius-md);
  background: var(--card-bg);
  color: var(--card-body-text);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.login-card .form-control-modern:focus {
  outline: none;
  border-color: var(--btn-accent-bg);
  box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.15);
  background: var(--card-bg);
}

.login-card .form-control-modern::placeholder {
  color: var(--card-body-text);
  opacity: 0.5;
}

.login-card .btn-modern-primary {
  padding: 0.875rem 1.5rem;
  font-size: 1rem;
  font-weight: 700;
  min-height: 48px;
}

.login-card .btn-modern-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 215, 0, 0.4);
}

/* Security notice styling */
.login-card .text-muted {
  line-height: 1.6;
  padding: 0.75rem;
  background: rgba(255, 215, 0, 0.05);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 215, 0, 0.15);
}

/* Mobile optimizations */
@media (max-width: 576px) {
  .login-card {
    margin: 1rem;
    max-width: calc(100% - 2rem);
  }
  
  .login-card .card-header {
    padding: 1.5rem 1rem 1rem;
    font-size: 1.25rem;
  }
  
  .login-card .card-body {
    padding: 1.5rem;
  }
  
  .login-card .form-control-modern {
    padding: 0.75rem 0.875rem;
  }
}

/* Loading state */
.login-card .btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.login-card .btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: currentColor;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Light theme adjustments */
.theme-light .login-card .card-header {
  background: linear-gradient(135deg, var(--card-header-bg), rgba(255, 215, 0, 0.08));
}

.theme-light .login-card .text-muted {
  background: rgba(255, 215, 0, 0.08);
  border-color: rgba(255, 215, 0, 0.2);
}