.page-shell {
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  box-sizing: border-box;
}

.placeholder-card {
  width: min(100%, 520px);
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--panel-bg);
  box-shadow: var(--shadow);
  text-align: left;
}

.placeholder-path {
  display: inline-flex;
  margin-bottom: 20px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--accent-border);
  background: var(--accent-bg);
  color: var(--text-h);
  font-family: var(--mono);
  font-size: 14px;
}

.placeholder-card h1 {
  margin: 0 0 12px;
}

.placeholder-card p {
  font-size: 16px;
  line-height: 1.7;
}

@media (max-width: 640px) {
  .page-shell {
    padding: 16px;
  }

  .placeholder-card {
    padding: 24px;
    border-radius: 20px;
  }
}