:root {
  color-scheme: light;
  --nav-hover-color: #271d8e;
  --nav-dropdown-hover-color: #271d8e;
}

/* Blend the full transparent logo into the header with the original soft shadow. */
.header .logo {
  background: transparent;
  padding: 0;
}
.header .logo img {
  margin-right: 0;
  object-fit: contain;
  filter: drop-shadow(-1px 5px 18px #000000);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --background-color: #0f1422;
  --default-color: #d4deef;
  --heading-color: #f2f5ff;
  --surface-color: #1a2234;
  --accent-color: #b7acff;
  --contrast-color: #17122e;
  --nav-color: #e4eafb;
  --nav-hover-color: #b7acff;
  --nav-mobile-background-color: #1a2234;
  --nav-dropdown-background-color: #1a2234;
  --nav-dropdown-color: #e4eafb;
  --nav-dropdown-hover-color: #b7acff;
}

[data-theme="dark"] .light-background {
  --background-color: #151c2c;
  --surface-color: #1a2234;
}

[data-theme="dark"] .dark-background {
  --background-color: #060606;
  --default-color: #ffffff;
  --heading-color: #ffffff;
  --contrast-color: #ffffff;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  flex-shrink: 0;
  min-height: 44px;
  margin-left: 12px;
  padding: 9px 12px;
  border: 1px solid color-mix(in srgb, var(--default-color), transparent 75%);
  border-radius: 50px;
  background: var(--surface-color);
  color: var(--nav-color);
  font: 500 13px var(--nav-font);
  cursor: pointer;
}

.theme-toggle:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.theme-toggle:focus-visible {
  outline: 3px solid var(--accent-color);
  outline-offset: 3px;
}

.theme-icon {
  width: 19px;
  height: 19px;
  flex-shrink: 0;
}

.theme-icon-sun, [data-theme="dark"] .theme-icon-moon { display: none; }
[data-theme="dark"] .theme-icon-sun { display: block; }

[data-theme="dark"] .course-detail-image { background: var(--surface-color); }
[data-theme="dark"] .page-title {
  --background-color: #221b53;
  --accent-color: #221b53;
  --heading-color: #f2f5ff;
  --default-color: #e6e2ff;
  --contrast-color: #ffffff;
}
.course-details .btn-primary { color: var(--contrast-color); }
[data-theme="dark"] .cpd-badge { background: #ffffff; border-radius: 12px; padding: 12px; }
[data-theme="dark"] .scrolled .header { box-shadow: 0 3px 24px #00000050; }
[data-theme="dark"] .hero .btn-get-started:hover { color: #17122e; }
[data-theme="dark"] .contact .php-email-form input.form-control,
[data-theme="dark"] .contact .php-email-form textarea.form-control {
  background-color: var(--surface-color);
  color: var(--default-color);
  border-color: #46516a;
}
[data-theme="dark"] .contact .php-email-form input.form-control:focus,
[data-theme="dark"] .contact .php-email-form textarea.form-control:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px #b7acff26;
}

@media (max-width: 1199px) {
  .theme-toggle-label { display: none; }
  .theme-toggle { order: 2; width: 44px; padding: 10px; margin: 0 8px 0 0; }
  .header .btn-getstarted { margin-right: 8px; }
  .mobile-nav-active .theme-toggle, .mobile-nav-active .header .btn-getstarted { visibility: hidden; }
}

[data-theme="dark"] .section-title h2 { color: #aab5cc; }

@media (max-width: 359px) {
  .header .btn-getstarted { font-size: 11px; padding: 8px 9px; margin-left: 6px; }
  .theme-toggle { margin-left: 6px; }
}