/* MatrixLink Academy — полный курс на сайте */

.academy {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px 16px 48px;
}

.academy-hero {
  text-align: center;
  padding: 28px 20px 32px;
  margin-bottom: 24px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: radial-gradient(ellipse at 50% 0%, rgba(var(--accent-rgb), 0.1), transparent 65%), var(--panel);
}

.academy-hero__title {
  font-family: Orbitron, Inter, sans-serif;
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 800;
  line-height: 1.2;
  margin: 12px auto 14px;
  max-width: 720px;
}

.academy-hero__lead {
  color: var(--hint);
  max-width: 640px;
  margin: 0 auto 22px;
  font-size: 1rem;
  line-height: 1.55;
}

.academy-hero__tools {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  align-items: center;
  margin-bottom: 12px;
}

.academy-search {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.25);
  min-width: min(100%, 280px);
}

.academy-search__icon {
  color: var(--hint);
  font-size: 1.1rem;
}

.academy-search input {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text);
  font: inherit;
  outline: none;
}

.academy-search input::placeholder {
  color: #5a6a5e;
}

.academy-hero__meta {
  font-size: 0.82rem;
  color: #5a6a5e;
  margin: 0;
}

.academy-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 28px;
  align-items: start;
}

@media (max-width: 900px) {
  .academy-layout {
    grid-template-columns: 1fr;
  }
}

.academy-toc {
  position: sticky;
  top: 72px;
  max-height: calc(100vh - 88px);
  overflow-y: auto;
  padding: 16px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--panel);
}

@media (max-width: 900px) {
  .academy-toc {
    position: static;
    max-height: none;
  }
}

.academy-toc__title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 12px;
}

.academy-toc__group {
  margin-bottom: 16px;
}

.academy-toc__group-title {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--hint);
  margin: 0 0 6px;
}

.academy-toc__link {
  display: block;
  padding: 6px 8px;
  margin: 2px 0;
  border-radius: 8px;
  font-size: 0.82rem;
  color: var(--text);
  text-decoration: none;
  line-height: 1.35;
  transition: background 0.15s;
}

.academy-toc__link:hover,
.academy-toc__link.is-active {
  background: rgba(var(--accent-rgb), 0.1);
  color: var(--accent);
}

.academy-content {
  min-width: 0;
}

.academy-loading {
  color: var(--hint);
  padding: 24px;
  text-align: center;
}

.academy-category {
  margin-bottom: 36px;
}

.academy-category__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.academy-category__icon {
  font-size: 1.4rem;
}

.academy-category__title {
  font-size: 1.15rem;
  font-weight: 800;
  margin: 0;
}

.academy-section {
  scroll-margin-top: 80px;
  margin-bottom: 20px;
  padding: 20px 22px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--panel);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.academy-section.is-highlight {
  border-color: rgba(var(--accent-rgb), 0.45);
  box-shadow: 0 0 0 1px rgba(var(--accent-rgb), 0.12);
}

.academy-section.is-hidden {
  display: none;
}

.academy-section__head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
}

.academy-section__icon {
  font-size: 1.5rem;
  line-height: 1;
}

.academy-section__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.3;
}

.academy-section__body {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text);
}

.academy-section__body b {
  color: #e8fff0;
  font-weight: 600;
}

.academy-section__body code {
  font-size: 0.85em;
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.35);
  color: var(--accent);
}

.academy-cta {
  text-align: center;
  margin-top: 40px;
  padding: 32px 20px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: radial-gradient(ellipse at 50% 100%, rgba(var(--accent-rgb), 0.08), transparent 70%), var(--panel);
}

.academy-cta h2 {
  font-size: 1.25rem;
  margin: 0 0 10px;
}

.academy-cta p {
  color: var(--hint);
  max-width: 480px;
  margin: 0 auto 20px;
}

.academy-empty {
  padding: 32px;
  text-align: center;
  color: var(--hint);
}