.app-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 28px 18px;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(4, 6, 12, 0.72);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.14) transparent;
}

.sidebar::-webkit-scrollbar {
  width: 8px;
}

.sidebar::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
}

.page-content {
  padding: 22px;
}

.page-content--split,
.page-content--photo {
  display: grid;
  grid-template-columns: 470px minmax(0, 1fr);
  gap: 18px;
  padding: 18px 12px 24px;
}

.page-content--profile {
  padding: 18px 28px 36px;
}

.page-content--payments {
  padding: 18px 28px 36px;
}

.page-content--video {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
}

.creation-panel,
.results-panel,
.blank-stage {
  min-height: calc(100vh - 36px);
}

.blank-stage {
  border-left: 1px solid var(--border);
}

@media (max-width: 1200px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 980px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    overflow: visible;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .page-content--split,
  .page-content--photo {
    grid-template-columns: 1fr;
  }

  .blank-stage {
    min-height: 320px;
    border-left: 0;
    border-top: 1px solid var(--border);
  }
}

@media (max-width: 760px) {
  .sidebar {
    gap: 18px;
    padding: 18px 14px;
  }

  .page-content,
  .page-content--split,
  .page-content--photo,
  .page-content--profile,
  .page-content--payments,
  .page-content--video,
  .page-content--legal {
    padding: 14px;
  }

  .page-content--split,
  .page-content--photo {
    gap: 14px;
  }

  .creation-panel,
  .results-panel,
  .blank-stage {
    min-height: auto;
  }
}