/* Mobile-first layout */

body {
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  padding: var(--space-md);
  padding-bottom: calc(var(--nav-height) + var(--space-md));
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
}

.page {
  display: none;
  animation: fadeIn 0.3s ease-out;
}

.page.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Bottom Nav (Mobile) */
.bottom-nav {
  display: flex;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  z-index: 100;
  padding-bottom: env(safe-area-inset-bottom);
}

.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  gap: 4px;
}

.nav-item.active {
  color: var(--color-primary);
}

.nav-item svg {
  width: 24px;
  height: 24px;
}

.nav-item span {
  font-size: 10px;
}

/* Sidebar (Desktop Hidden by Default) */
.sidebar {
  display: none;
}