[data-theme="dark"] {
  --primary: #818CF8;
  --primary-hover: #6366F1;
  --primary-light: #1E1B4B;
  --bg: #0F172A;
  --bg-card: #1E293B;
  --text: #F1F5F9;
  --text-muted: #94A3B8;
  --border: #334155;
  --sidebar-bg: #1E293B;
  --header-bg: #1E293B;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .auth-page {
  background: linear-gradient(135deg, #1E1B4B 0%, #0F172A 50%);
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea {
  background: #0F172A;
  border-color: #334155;
  color: #F1F5F9;
}

[data-theme="dark"] .badge-trial { background: #422006; color: #FDE68A; }
[data-theme="dark"] .badge-active { background: #14532D; color: #BBF7D0; }
[data-theme="dark"] .badge-expired { background: #7F1D1D; color: #FECACA; }
[data-theme="dark"] .badge-spark { background: #1E1B4B; color: #818CF8; }
[data-theme="dark"] .badge-base { background: #1E3A5F; color: #93C5FD; }

[data-theme="dark"] .trial-banner {
  background: #422006;
  color: #FDE68A;
  border-color: #78350F;
}

[data-theme="dark"] .trial-banner.expired {
  background: #7F1D1D;
  color: #FECACA;
  border-color: #991B1B;
}

[data-theme="dark"] .alert-error {
  background: #7F1D1D;
  color: #FECACA;
  border-color: #991B1B;
}

[data-theme="dark"] .alert-success {
  background: #14532D;
  color: #BBF7D0;
  border-color: #166534;
}