.truenas-course {
  --px-orange: #06b6d4;
  --px-orange-soft: rgba(6, 182, 212, 0.13);
  --px-blue: #22d3ee;
  --px-green: #34d399;
}

.truenas-course .tn-hero {
  background:
    radial-gradient(circle at 80% 22%, rgba(6, 182, 212, 0.18), transparent 27%),
    radial-gradient(circle at 23% 11%, rgba(124, 58, 237, 0.14), transparent 29%),
    linear-gradient(135deg, #060b15 0%, #071421 60%, #0a1020 100%);
}

.truenas-course .px-hero h1 span {
  background: linear-gradient(90deg, #22d3ee, #60a5fa 52%, #a78bfa);
  background-clip: text;
  -webkit-background-clip: text;
}

.truenas-course .px-eyebrow {
  color: #a5f3fc;
  border-color: rgba(6, 182, 212, 0.34);
}

.truenas-course .px-status-dot {
  background: #22d3ee;
  box-shadow: 0 0 14px #22d3ee;
}

.truenas-course .px-progress-card,
.truenas-course .px-logo-mark {
  border-color: rgba(6, 182, 212, 0.34);
}

.truenas-course .px-logo-mark {
  color: #67e8f9;
  box-shadow: 0 14px 35px rgba(6, 182, 212, 0.18);
}

.truenas-course .tn-logo-mark span {
  font-size: 1.45rem;
  letter-spacing: -0.08em;
}

.truenas-course .px-progress-track div {
  background: linear-gradient(90deg, #06b6d4, #3b82f6, #8b5cf6);
}

.truenas-course .px-module-number {
  color: #a5f3fc;
  border-color: rgba(6, 182, 212, 0.4);
}

.truenas-course .px-course-nav a:hover,
.truenas-course .px-course-nav a.active {
  background: rgba(6, 182, 212, 0.12);
}

.truenas-course .px-course-nav a.active span,
.truenas-course .px-text-button {
  color: #67e8f9;
}

.tn-section-label {
  display: flex;
  gap: 15px;
  align-items: center;
  margin: 18px 0 -8px;
  padding: 17px 20px;
  border: 1px solid rgba(6, 182, 212, 0.22);
  border-radius: 15px;
  background: linear-gradient(90deg, rgba(6, 182, 212, 0.1), rgba(124, 58, 237, 0.06));
}

.tn-section-label > span {
  display: grid;
  flex: 0 0 34px;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  color: #a5f3fc;
  background: rgba(6, 182, 212, 0.13);
  font: 800 0.75rem var(--font-mono);
}

.tn-section-label strong {
  display: block;
  color: var(--text-primary);
}

.tn-section-label p {
  margin: 3px 0 0;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.tn-objectives {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tn-objectives span {
  padding: 8px 11px;
  border: 1px solid rgba(6, 182, 212, 0.23);
  border-radius: 999px;
  color: #a5f3fc;
  background: rgba(6, 182, 212, 0.07);
  font: 600 0.7rem var(--font-mono);
}

.tn-open-lesson {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: 9px;
  background: rgba(6, 182, 212, 0.08);
}

.tn-open-lesson:hover {
  color: #fff;
  border-color: #22d3ee;
  background: rgba(6, 182, 212, 0.15);
}

.tn-dataset-map {
  display: grid;
  grid-template-columns: 1.2fr auto repeat(4, 1fr);
  gap: 9px;
  align-items: center;
  padding: 20px;
  border: 1px dashed #354960;
  border-radius: 14px;
  background: rgba(7, 13, 21, 0.55);
}

.tn-dataset-map div {
  padding: 10px;
  border: 1px solid #2b4058;
  border-radius: 9px;
  color: var(--text-secondary);
  background: #101a28;
  font: 700 0.72rem var(--font-mono);
  text-align: center;
}

.tn-dataset-map .root {
  color: #a5f3fc;
  border-color: rgba(6, 182, 212, 0.45);
  background: rgba(6, 182, 212, 0.1);
}

.tn-dataset-map > span { color: #52677f; }

.tn-flow {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: center;
  padding: 22px;
  border: 1px dashed #354960;
  border-radius: 14px;
  background: rgba(7, 13, 21, 0.55);
}

.tn-flow div {
  padding: 11px 14px;
  border: 1px solid #31445d;
  border-radius: 9px;
  color: var(--text-secondary);
  background: #101a28;
  font-size: 0.78rem;
  text-align: center;
}

.tn-flow div:nth-of-type(2) {
  color: #a5f3fc;
  border-color: rgba(6, 182, 212, 0.45);
  background: rgba(6, 182, 212, 0.1);
}

.tn-flow > span { color: #52677f; }

.tn-app-identity {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 18px;
  border: 1px solid rgba(249, 115, 22, 0.26);
  border-radius: 14px;
  background: rgba(249, 115, 22, 0.07);
}

.tn-app-identity > span {
  display: grid;
  flex: 0 0 44px;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  color: #fdba74;
  background: rgba(249, 115, 22, 0.15);
  font-size: 1.25rem;
}

.tn-app-identity.green { border-color: rgba(52, 211, 153, 0.26); background: rgba(52, 211, 153, 0.07); }
.tn-app-identity.green > span { color: #a7f3d0; background: rgba(52, 211, 153, 0.14); }
.tn-app-identity.blue { border-color: rgba(59, 130, 246, 0.28); background: rgba(59, 130, 246, 0.07); }
.tn-app-identity.blue > span { color: #bfdbfe; background: rgba(59, 130, 246, 0.14); }
.tn-app-identity.purple { border-color: rgba(167, 139, 250, 0.3); background: rgba(124, 58, 237, 0.08); }
.tn-app-identity.purple > span { color: #ddd6fe; background: rgba(124, 58, 237, 0.17); }
.tn-app-identity strong { display: block; color: var(--text-primary); }
.tn-app-identity p { margin: 4px 0 0; color: var(--text-muted); font-size: 0.84rem; }

@media (max-width: 780px) {
  .tn-dataset-map {
    grid-template-columns: 1fr;
  }
  .tn-dataset-map > span {
    transform: rotate(90deg);
    text-align: center;
  }
}

@media (max-width: 620px) {
  .tn-flow {
    align-items: stretch;
    flex-direction: column;
  }
  .tn-flow > span {
    transform: rotate(90deg);
    text-align: center;
  }
}