.course-hub-main {
  width: min(1240px, calc(100vw - 48px));
  margin: 0 auto;
  padding: 132px 0 96px;
}

.course-hub-hero {
  position: relative;
  padding: 40px;
  border-radius: 32px;
  background:
    linear-gradient(135deg, rgba(9, 28, 55, 0.96), rgba(16, 102, 158, 0.86)),
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.18), transparent 42%);
  color: #f6fbff;
  box-shadow: 0 34px 78px rgba(8, 24, 46, 0.18);
}

.course-hub-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.course-hub-hero h1 {
  margin: 20px 0 14px;
  font-size: clamp(2.3rem, 5vw, 4rem);
  line-height: 1.04;
  letter-spacing: -0.04em;
}

.course-hub-hero p {
  max-width: 760px;
  margin: 0;
  font-size: 1.04rem;
  line-height: 1.8;
  color: rgba(246, 251, 255, 0.88);
}

.course-hub-trust-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.course-hub-trust-item {
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(246, 251, 255, 0.88);
  font-size: 0.94rem;
  line-height: 1.5;
}

.course-hub-search {
  margin-top: 24px;
}

.course-hub-search__shell {
  position: relative;
}

.course-hub-search__input {
  width: 100%;
  min-height: 68px;
  padding: 0 22px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.96);
  color: #10233b;
  font-size: 1.06rem;
  box-shadow: 0 16px 34px rgba(5, 15, 30, 0.12);
}

.course-hub-search__input:focus {
  outline: none;
  border-color: rgba(31, 175, 255, 0.72);
  box-shadow: 0 0 0 4px rgba(31, 175, 255, 0.18);
}

.course-hub-search__suggestions {
  position: absolute;
  inset: calc(100% + 10px) 0 auto;
  z-index: 14;
  padding: 12px;
  border: 1px solid rgba(14, 35, 60, 0.08);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 24px 64px rgba(12, 27, 46, 0.16);
}

.course-hub-search__suggestion {
  display: grid;
  gap: 4px;
  width: 100%;
  padding: 14px 16px;
  border: 0;
  border-radius: 16px;
  background: transparent;
  color: #18314f;
  text-align: left;
}

.course-hub-search__suggestion:hover,
.course-hub-search__suggestion:focus-visible {
  background: rgba(15, 111, 173, 0.08);
  outline: none;
}

.course-hub-search__suggestion-title {
  font-weight: 700;
  font-size: 0.98rem;
}

.course-hub-search__suggestion-meta {
  color: rgba(24, 49, 79, 0.72);
  font-size: 0.86rem;
}

.course-hub-quick-entries {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.course-hub-quick-entry {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  color: #f6fbff;
  font-size: 0.92rem;
  font-weight: 600;
}

.course-hub-quick-entry:hover,
.course-hub-quick-entry:focus-visible,
.course-hub-quick-entry.is-active {
  background: rgba(255, 255, 255, 0.2);
  outline: none;
}

.course-hub-quick-entry small {
  color: rgba(246, 251, 255, 0.76);
  font-size: 0.8rem;
  font-weight: 500;
}

.course-hub-layout {
  display: grid;
  grid-template-columns: minmax(250px, 282px) minmax(0, 1fr);
  gap: 28px;
  margin-top: 32px;
  align-items: start;
}

.course-hub-sidebar {
  position: sticky;
  top: 116px;
  display: grid;
  gap: 18px;
  padding: 22px 20px;
  border: 1px solid rgba(18, 45, 74, 0.08);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 18px 46px rgba(10, 27, 48, 0.08);
}

.course-hub-sidebar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.course-hub-sidebar__header h2 {
  margin: 0;
  font-size: 1.08rem;
  color: #122d4a;
}

.course-hub-clear {
  border: 0;
  background: transparent;
  color: #0f6fad;
  font-weight: 700;
}

.course-filter-group {
  display: grid;
  gap: 12px;
}

.course-filter-group h3 {
  margin: 0;
  font-size: 0.92rem;
  color: rgba(18, 45, 74, 0.72);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.course-filter-option {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.94rem;
  color: #17314f;
}

.course-filter-option input {
  width: 18px;
  height: 18px;
  accent-color: #0f6fad;
}

.course-hub-results {
  display: grid;
  gap: 18px;
}

.course-hub-results__toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.course-hub-results__count {
  color: #16314e;
  font-size: 0.96rem;
  font-weight: 600;
}

.course-hub-active-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.course-hub-active-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid rgba(15, 111, 173, 0.12);
  background: rgba(15, 111, 173, 0.07);
  color: #0f456f;
  font-size: 0.9rem;
  font-weight: 600;
}

.course-hub-active-chip button {
  border: 0;
  background: transparent;
  color: inherit;
  font-size: 0.98rem;
}

.course-promo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.course-promo-card {
  position: relative;
  display: grid;
  gap: 16px;
  min-height: 100%;
  padding: 22px 22px 20px;
  border: 1px solid rgba(18, 45, 74, 0.08);
  border-radius: 28px;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.98), rgba(246, 250, 255, 0.95)),
    radial-gradient(circle at top right, rgba(15, 111, 173, 0.12), transparent 50%);
  box-shadow: 0 18px 44px rgba(10, 27, 48, 0.08);
}

.course-promo-card::after {
  content: "";
  position: absolute;
  inset: auto 18px 18px auto;
  width: 86px;
  height: 86px;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(15, 111, 173, 0.18), rgba(255, 255, 255, 0));
  pointer-events: none;
}

.course-promo-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.course-promo-card__title {
  margin: 0;
  font-size: 1.26rem;
  line-height: 1.3;
  color: #122d4a;
}

.course-promo-card__summary {
  margin: 0;
  color: rgba(18, 45, 74, 0.78);
  line-height: 1.75;
}

.course-promo-card__details {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.course-promo-card__details span {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(18, 45, 74, 0.06);
  color: #17314f;
  font-size: 0.85rem;
  font-weight: 600;
}

.course-promo-card__note {
  margin: 0;
  color: #0f6fad;
  font-size: 0.9rem;
  font-weight: 600;
}

.course-promo-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: auto;
}

.course-promo-card__price {
  color: #122d4a;
  font-size: 1rem;
  font-weight: 800;
}

.course-promo-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 0;
  background: transparent;
  color: #0f6fad;
  font-weight: 800;
}

.course-promo-card__cta svg {
  width: 16px;
  height: 16px;
}

.course-promo-card__destination {
  display: block;
  margin-top: -8px;
  color: rgba(18, 45, 74, 0.56);
  font-size: 0.82rem;
}

.course-hub-empty {
  padding: 28px;
  border: 1px dashed rgba(15, 111, 173, 0.24);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.88);
}

.course-hub-empty h3 {
  margin: 0 0 10px;
  font-size: 1.22rem;
  color: #132f4c;
}

.course-hub-empty p {
  margin: 0;
  color: rgba(19, 47, 76, 0.78);
  line-height: 1.75;
}

.course-hub-empty__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.course-hub-empty__actions .knowledge-button {
  margin: 0;
}

@media (max-width: 1040px) {
  .course-hub-layout {
    grid-template-columns: 1fr;
  }

  .course-hub-sidebar {
    position: static;
  }
}

@media (max-width: 720px) {
  .course-hub-main {
    width: min(100vw - 28px, 100%);
    padding: 108px 0 76px;
  }

  .course-hub-hero {
    padding: 26px 20px;
    border-radius: 26px;
  }

  .course-hub-search__input {
    min-height: 60px;
    padding: 0 18px;
  }

  .course-promo-grid {
    grid-template-columns: 1fr;
  }

  .course-promo-card__footer,
  .course-hub-results__toolbar {
    align-items: flex-start;
    flex-direction: column;
  }
}