/* ALDHS Textbook Identity System V2
   Additive stylesheet only. Safe to load after styles.css. */

:root {
  --aldhs-v2-ink: #f8fbff;
  --aldhs-v2-muted: #b8c7df;
  --aldhs-v2-panel: rgba(6, 11, 28, 0.78);
  --aldhs-v2-line: rgba(148, 212, 255, 0.24);
  --aldhs-v2-blue: #47b8ff;
  --aldhs-v2-violet: #7657ff;
  --aldhs-v2-cyan: #74f0ff;
}

.opening-slideshow,
.mission-band,
.rotunda-detail-grid,
.course-grid {
  position: relative;
}

.opening-slideshow::before,
.course-grid::before {
  content: "";
  position: absolute;
  inset: -24px;
  pointer-events: none;
  background:
    radial-gradient(circle at 15% 12%, rgba(116, 240, 255, 0.14), transparent 28%),
    radial-gradient(circle at 82% 28%, rgba(118, 87, 255, 0.18), transparent 34%);
  filter: blur(1px);
  opacity: 0.9;
  z-index: -1;
}

.course-card {
  isolation: isolate;
  overflow: hidden;
}

.course-card .course-layer-bg {
  background:
    linear-gradient(135deg, rgba(3, 8, 22, 0.42), rgba(4, 10, 30, 0.86)),
    var(--aldhs-course-horizontal-card, none) center / cover no-repeat !important;
  opacity: 0.68;
  filter: saturate(1.12) contrast(1.08);
}

.course-card::after {
  content: "";
  position: absolute;
  inset: auto 18px 18px auto;
  width: clamp(72px, 18vw, 128px);
  aspect-ratio: 1;
  border-radius: 28px;
  background:
    radial-gradient(circle at 45% 35%, rgba(255, 255, 255, 0.30), transparent 18%),
    var(--aldhs-course-logo, none) center / 74% no-repeat,
    linear-gradient(145deg, rgba(14, 23, 50, 0.94), rgba(21, 28, 61, 0.72));
  border: 1px solid rgba(180, 226, 255, 0.24);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.30), inset 0 1px 0 rgba(255, 255, 255, 0.09);
  z-index: 1;
  opacity: 0.88;
}

.course-card .course-kinetic-logo {
  border-color: rgba(152, 224, 255, 0.28) !important;
  background:
    radial-gradient(circle at center, rgba(116, 240, 255, 0.16), transparent 52%),
    rgba(6, 13, 34, 0.54) !important;
}

.course-card .course-kinetic-logo img {
  opacity: 0;
}

.course-card .course-content {
  position: relative;
  z-index: 3;
  max-width: min(100%, 38rem);
}

.course-card .course-detail {
  color: #9deaff !important;
}

.course-card[data-slug="hipaa"] {
  --aldhs-course-horizontal-card: url("assets/textbook-identity-v2/horizontal-cards-web/06-hipaa-compliance-certification-horizontal-card.webp");
  --aldhs-course-logo: url("assets/textbook-identity-v2/logos-web/06-hipaa-compliance-certification-logo.webp");
}

.course-card[data-slug="cma"] {
  --aldhs-course-horizontal-card: url("assets/textbook-identity-v2/horizontal-cards-web/05-clinical-office-procedures-horizontal-card.webp");
  --aldhs-course-logo: url("assets/textbook-identity-v2/logos-web/05-clinical-office-procedures-logo.webp");
}

.course-card[data-slug="medical-terminology"] {
  --aldhs-course-horizontal-card: url("assets/textbook-identity-v2/horizontal-cards-web/07-medical-terminology-horizontal-card.webp");
  --aldhs-course-logo: url("assets/textbook-identity-v2/logos-web/07-medical-terminology-logo.webp");
}

.course-card[data-slug="anatomy-physiology"] {
  --aldhs-course-horizontal-card: url("assets/textbook-identity-v2/horizontal-cards-web/03-human-anatomy-biophysiology-horizontal-card.webp");
  --aldhs-course-logo: url("assets/textbook-identity-v2/logos-web/03-human-anatomy-biophysiology-logo.webp");
}

.course-card[data-slug="administrative-ma"] {
  --aldhs-course-horizontal-card: url("assets/textbook-identity-v2/horizontal-cards-web/01-medical-office-administration-horizontal-card.webp");
  --aldhs-course-logo: url("assets/textbook-identity-v2/logos-web/01-medical-office-administration-logo.webp");
}

.course-card[data-slug="radiation-science"] {
  --aldhs-course-horizontal-card: url("assets/textbook-identity-v2/horizontal-cards-web/09-radiation-science-horizontal-card.webp");
  --aldhs-course-logo: url("assets/textbook-identity-v2/logos-web/09-radiation-science-logo.webp");
}

.course-card[data-slug="nuclear-medicine"] {
  --aldhs-course-horizontal-card: url("assets/textbook-identity-v2/horizontal-cards-web/08-theragnostic-medicine-horizontal-card.webp");
  --aldhs-course-logo: url("assets/textbook-identity-v2/logos-web/08-theragnostic-medicine-logo.webp");
}

.course-card[data-slug="healthcare-laws-ethics"] {
  --aldhs-course-horizontal-card: url("assets/textbook-identity-v2/horizontal-cards-web/02-healthcare-laws-ethics-horizontal-card.webp");
  --aldhs-course-logo: url("assets/textbook-identity-v2/logos-web/02-healthcare-laws-ethics-logo.webp");
}

.course-card[data-slug="behavioral-medicine"] {
  --aldhs-course-horizontal-card: url("assets/textbook-identity-v2/horizontal-cards-web/04-behavioral-medicine-horizontal-card.webp");
  --aldhs-course-logo: url("assets/textbook-identity-v2/logos-web/04-behavioral-medicine-logo.webp");
}

.course-card[data-slug="allied-health-professional"] {
  --aldhs-course-horizontal-card: url("assets/textbook-identity-v2/patterns-web/02-healthcare-laws-ethics-pattern.webp");
  --aldhs-course-logo: url("assets/textbook-identity-v2/logos-web/02-healthcare-laws-ethics-logo.webp");
}

.course-card[data-slug="educational-studies"] {
  --aldhs-course-horizontal-card: url("assets/textbook-identity-v2/patterns-web/04-behavioral-medicine-pattern.webp");
  --aldhs-course-logo: url("assets/textbook-identity-v2/logos-web/04-behavioral-medicine-logo.webp");
}

.course-card[data-slug="radiochemistry"] {
  --aldhs-course-horizontal-card: url("assets/textbook-identity-v2/patterns-web/08-theragnostic-medicine-pattern.webp");
  --aldhs-course-logo: url("assets/textbook-identity-v2/logos-web/08-theragnostic-medicine-logo.webp");
}

.textbook-v2-feature-strip {
  margin: clamp(1rem, 3vw, 2rem) auto;
  max-width: min(1180px, calc(100% - 2rem));
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(240px, 0.9fr);
  gap: 1rem;
  padding: clamp(1rem, 3vw, 1.5rem);
  border: 1px solid var(--aldhs-v2-line);
  border-radius: 28px;
  color: var(--aldhs-v2-ink);
  background:
    linear-gradient(135deg, rgba(4, 9, 24, 0.82), rgba(14, 20, 48, 0.74)),
    url("assets/textbook-identity-v2/patterns-web/03-human-anatomy-biophysiology-pattern.webp") center / cover no-repeat;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.30);
}

.textbook-v2-feature-strip h2 {
  margin: 0.2rem 0 0.5rem;
  color: #fff;
}

.textbook-v2-feature-strip p {
  margin: 0;
  color: var(--aldhs-v2-muted);
}

.textbook-v2-feature-strip img {
  width: 100%;
  min-height: 180px;
  object-fit: cover;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.textbook-v2-card-injected {
  animation: textbook-v2-arrive 480ms ease both;
}

@keyframes textbook-v2-arrive {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 780px) {
  .course-card::after {
    width: 74px;
    border-radius: 20px;
    opacity: 0.68;
  }

  .textbook-v2-feature-strip {
    grid-template-columns: 1fr;
  }
}