/* public/css/layout.css — shell layout */

.shell { min-height: 100vh; display: flex; flex-direction: column; }
.shell__header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
  position: sticky;
  top: 0;
  z-index: 10;
}
.shell__brand { font-family: var(--font-serif); font-weight: 600; font-size: var(--text-lg); }
.shell__body { flex: 1; padding: var(--space-8); max-width: var(--measure); margin: 0 auto; width: 100%; }
.placeholder { color: var(--text-muted); text-align: center; margin-top: var(--space-16); }