html, body {
  background: var(--bg-app);
  color: var(--text-primary);
}

#app {
  display: flex;
  justify-content: center;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg-app);
}

.app-shell {
  width: 100%;
  max-width: 480px;
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  position: relative;
  background: var(--bg-app);
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
  overflow: hidden;
}

@media (min-width: 720px) {
  .app-shell {
    max-width: 460px;
    height: calc(100vh - 48px);
    height: calc(100dvh - 48px);
    margin: 24px 0;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-elevated);
    overflow: hidden;
  }

  #app {
    align-items: flex-start;
  }

  body.has-side-panel #app {
    gap: 24px;
  }
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: calc(var(--space-3) + var(--safe-top)) var(--space-4) var(--space-3);
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-soft);
  position: sticky;
  top: 0;
  z-index: 20;
}

.screen-container {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--space-4) var(--space-4) calc(var(--nav-height) + var(--safe-bottom) + var(--space-6));
  -webkit-overflow-scrolling: touch;
}

.screen-container.no-nav-padding {
  padding-bottom: var(--space-6);
}

.bottom-nav {
  position: sticky;
  bottom: 0;
  z-index: 30;
  display: flex;
  align-items: stretch;
  background: var(--bg-nav);
  border-top: 1px solid var(--border-soft);
  box-shadow: var(--shadow-nav);
  padding-bottom: var(--safe-bottom);
  height: calc(var(--nav-height) + var(--safe-bottom));
}

.bottom-nav__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--text-secondary);
  transition: color var(--transition-fast), transform var(--transition-fast);
  min-height: 48px;
  position: relative;
}

.bottom-nav__item .icon {
  font-size: 1.4rem;
  line-height: 1;
}

.bottom-nav__item[aria-current='page'] {
  color: var(--accent-primary-strong);
}

.bottom-nav__item[aria-current='page']::before {
  content: '';
  position: absolute;
  top: 4px;
  width: 28px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--accent-primary-strong);
}

.bottom-nav__item--primary {
  color: var(--color-navy);
}

.bottom-nav__item--primary .icon {
  background: var(--accent-primary);
  border-radius: 50%;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-card);
  margin-top: -14px;
  font-size: 1.5rem;
}

.bottom-nav__item:active {
  transform: scale(0.94);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.stack--tight {
  gap: var(--space-2);
}

.row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.row--between {
  justify-content: space-between;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.section-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.spacer {
  flex: 1;
}

.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}