/* Shell */
.app-shell {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* Top bar — logo left, utilities right */
.app-topbar {
  align-items: center;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  flex-shrink: 0;
  gap: var(--space-md);
  justify-content: space-between;
  padding: var(--space-sm) var(--space-lg);
  position: relative;
  z-index: 1;
}

.app-topbar__logo {
  height: 1.1rem;
  width: auto;
}

[data-theme='light'] .app-topbar__logo {
  filter: invert(1);
}

.app-topbar__utilities {
  align-items: center;
  display: flex;
  gap: var(--space-xs);
}

.app-topbar__utility {
  align-items: center;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  display: inline-flex;
  height: var(--control-h-sm);
  justify-content: center;
  padding: 0 var(--space-xs);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  width: var(--control-h-sm);
}

.app-topbar__utility:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* Body — sidebar + main side by side */
.app-body {
  display: flex;
  flex: 1;
  gap: 0;
  min-height: 0;
  overflow: hidden;
}

/* Main content — sole scrollable zone */
.app-main {
  flex: 1;
  margin: 0 auto;
  max-width: var(--content-max);
  min-width: 0;
  overflow-y: auto;
  padding: var(--space-md) var(--space-lg);
  width: 100%;
}

.app-main__header {
  align-items: baseline;
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.app-main__title {
  font-size: clamp(var(--text-xl), 3vw, var(--text-2xl));
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 0;
}

.app-main__meta {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-left: auto;
}

.view-root {
  display: grid;
  gap: var(--space-lg);
  min-width: 0;
  padding-bottom: var(--space-lg);
}

.empty-state {
  padding: var(--space-lg);
}

.empty-state__eyebrow,
.empty-state__title,
.empty-state__text {
  margin: 0;
}

.empty-state__eyebrow {
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
}

.empty-state__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
}

.empty-state__text {
  color: var(--text-secondary);
  max-width: 38rem;
}

/* Empty states (minimal, no icons) */
.empty-state--illustrated {
  align-items: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  justify-content: center;
  padding: var(--space-lg);
  text-align: center;
}

.app-section-heading {
  display: grid;
  gap: var(--space-xs);
}

@media (max-width: 859px) {
  .app-main {
    padding-bottom: 5rem;
  }
}

@media (min-width: 860px) {
  .app-main {
    max-width: var(--content-max);
  }
}