#app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  max-width: 480px;
  margin: 0 auto;
  position: relative;
}

#app {
  flex: 1;
  padding: calc(var(--space-5) + var(--safe-top)) var(--space-5) var(--space-5);
  padding-bottom: calc(var(--space-6) + 72px + var(--safe-bottom));
}

.view {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  animation: view-fade-in 180ms ease-out;
}

@keyframes view-fade-in {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.view-header,
.eyebrow {
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

#bottom-nav {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: calc(var(--space-4) + var(--safe-bottom));
  width: calc(100% - var(--space-6));
  max-width: 432px;
  display: flex;
  justify-content: space-around;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  z-index: 10;
}

#bottom-nav[hidden] {
  display: none;
}

.nav-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  flex: 1;
  transition: color 150ms ease, background 150ms ease;
}

.nav-btn-icon {
  width: 20px;
  height: 20px;
  display: block;
}

.nav-btn.nav-active {
  color: var(--accent);
  background: rgba(52, 211, 153, 0.1);
}

/* Full-bleed views (scan/confirm) opt out of the standard #app padding rhythm */
.view-scan,
.view-confirm {
  margin: calc(var(--space-5) * -1) calc(var(--space-5) * -1) calc(var(--space-6) * -1);
  padding: var(--space-4);
  padding-top: calc(var(--space-4) + var(--safe-top));
  min-height: 100vh;
}

.view-scan {
  background: #000;
  gap: var(--space-4);
}