.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-expanded) minmax(0, 1fr);
  gap: 24px;
  transition: grid-template-columns var(--transition), gap var(--transition);
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  align-items: start;
  min-width: 0;
}

.app-shell.is-collapsed {
  grid-template-columns: var(--sidebar-collapsed) minmax(0, 1fr);
}

.main-content {
  min-width: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 18px;
}

.section-head__eyebrow {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--primary);
  font-weight: 800;
  margin-bottom: 6px;
}

.section-head__title {
  font-size: 1.4rem;
}

.section-head__hint {
  color: var(--text-soft);
  font-size: 0.94rem;
  text-align: right;
}

@media (max-width: 1200px) {
  .app-shell,
  .app-shell.is-collapsed {
    gap: 20px;
  }
}

@media (max-width: 980px) {
  .app-shell,
  .app-shell.is-collapsed {
    grid-template-columns: 1fr;
    gap: 16px;
    align-items: stretch;
  }

  .app-shell.is-mobile-menu-only .main-content {
    display: none;
  }

  .app-shell.is-mobile-menu-only .sidebar {
    width: 100%;
    min-height: calc(100dvh - 28px);
  }

  .app-shell.is-mobile-content-mode .main-content {
    display: flex;
    order: 2;
    gap: 14px;
  }

  .app-shell.is-mobile-content-mode .main-content > * {
    min-width: 0;
  }

  .app-shell.is-mobile-content-mode .sidebar {
    order: 1;
    min-height: auto;
    padding-block: 12px;
    border-radius: 22px;
  }

  .app-shell.is-mobile-content-mode .cards-grid,
  .app-shell.is-mobile-content-mode .cards-grid--screen {
    width: 100%;
    min-width: 0;
  }

  .app-shell.is-mobile-content-mode .sidebar__top {
    margin-bottom: 0;
    min-height: auto;
  }

  .app-shell.is-mobile-content-mode .sidebar__top::before {
    max-width: 112px;
    height: 44px;
  }

  .app-shell.is-mobile-content-mode .sidebar__nav {
    display: none;
  }

  .app-shell.is-mobile-content-mode .sidebar__item,
  .app-shell.is-mobile-content-mode .sidebar__label-wrap,
  .app-shell.is-mobile-content-mode .sidebar__meta {
    pointer-events: none;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .section-head__hint {
    text-align: left;
  }
}

@media (max-width: 768px) {
  .app-shell,
  .app-shell.is-collapsed {
    gap: 12px;
  }

  .app-shell.is-mobile-content-mode .main-content {
    gap: 12px;
  }

  .section-head {
    gap: 12px;
  }

  .section-head__title {
    font-size: 1.2rem;
    line-height: 1.25;
  }

  .section-head__hint,
  .section-head__eyebrow {
    font-size: 0.84rem;
  }
}

@media (max-width: 480px) {
  .app-shell,
  .app-shell.is-collapsed {
    gap: 10px;
  }

  .app-shell.is-mobile-content-mode .sidebar {
    padding-inline: 12px;
  }

  .app-shell.is-mobile-content-mode .sidebar__top::before {
    max-width: 96px;
    height: 38px;
  }

  .section-head__title {
    font-size: 1.08rem;
  }
}

.topbar,
.main-header,
.section-head {
  display: none !important;
}

.main-content {
  gap: 0;
}