.courses-wrap {
  background: #031747;
  color: #ffffff;
}

.courses-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 28px;
}

/* Sidebar */
.courses-sidebar {
  position: sticky;
  top: 90px;
}

.courses-sidebar-title {
  font-weight: 800;
  margin-bottom: 14px;
}

.year-buttons {
  display: grid;
  gap: 12px;
}

.year-btn {
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid rgba(181,226,255,.18);
  background: rgba(255,255,255,.06);
  color: #fff;
  font-weight: 700;
  text-align: left;
  transition: all .2s ease;
}

.year-btn:hover {
  background: rgba(181,226,255,.10);
}

.year-btn.is-active {
  background: rgba(181,226,255,.18);
  border-color: rgba(181,226,255,.45);
}

/* Subjects */
.subjects-box {
  margin-top: 18px;
  padding: 16px;
  border-radius: 16px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(181,226,255,.18);
}

.subjects-title {
  font-weight: 700;
  color: #b5e2ff;
}

.subjects-list {
  padding-left: 18px;
  margin-bottom: 0;
}

/* Main */
.courses-main {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 16px;
  min-height: calc(100vh - 140px);
}

.course-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(181,226,255,.18);
  border-radius: 22px;
  padding: 26px;
}

.course-title {
  font-weight: 900;
}

.course-subtitle {
  color: rgba(255,255,255,.78);
  margin-bottom: 12px;
}

.course-text {
  color: rgba(255,255,255,.86);
  line-height: 1.65;
}

.course-highlight {
  margin-top: 14px;
  padding: 14px;
  border-radius: 16px;
  background: rgba(181,226,255,.08);
  border: 1px solid rgba(181,226,255,.18);
}

.course-meta {
  margin-top: 12px;
  color: #e8e3c9;
}

/* Panels animation */
.course-panel {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .35s ease, transform .35s ease;
}

.course-panel.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Image panel */
.courses-image-panel {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid rgba(181,226,255,.14);
  min-height: 220px;
}

.courses-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.courses-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    rgba(3,23,71,.72),
    rgba(3,23,71,.18),
    rgba(3,23,71,.62)
  );
}

/* Responsive */
@media (max-width: 991.98px) {
  .courses-layout {
    grid-template-columns: 1fr;
  }

  .courses-main {
    min-height: auto;
  }

  .courses-sidebar {
    position: static;
  }
}