.app-frame {
  min-height: 100vh;
  min-height: 100svh;
}

.app-header {
  display: flex;
  min-height: var(--header-height);
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding:
    max(var(--space-3), env(safe-area-inset-top))
    max(var(--space-4), env(safe-area-inset-right))
    var(--space-3)
    max(var(--space-4), env(safe-area-inset-left));
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.app-brand {
  min-width: 0;
  color: var(--color-ink);
  font-size: 1rem;
  font-weight: 750;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.app-user {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: var(--space-2);
}

.app-user__name {
  max-width: 12rem;
  overflow: hidden;
  color: var(--color-muted);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.app-user form {
  margin: 0;
}

.app-nav {
  position: fixed;
  z-index: 100;
  right: 0;
  bottom: 0;
  left: 0;
  display: grid;
  grid-auto-columns: minmax(0, 1fr);
  grid-auto-flow: column;
  min-height: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom));
  padding:
    var(--space-1)
    max(var(--space-2), env(safe-area-inset-right))
    max(var(--space-1), env(safe-area-inset-bottom))
    max(var(--space-2), env(safe-area-inset-left));
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.nav-link {
  display: flex;
  min-width: 0;
  min-height: 56px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 2px;
  padding: var(--space-1);
  border-radius: var(--radius-md);
  color: var(--color-muted);
  font-size: 0.75rem;
  font-weight: 650;
  text-align: center;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--color-primary-hover);
  background: var(--color-primary-soft);
}

.app-main {
  width: min(100%, var(--content-max));
  min-width: 0;
  margin: 0 auto;
  padding:
    var(--space-5)
    max(var(--space-4), env(safe-area-inset-right))
    calc(var(--mobile-nav-height) + env(safe-area-inset-bottom) + var(--space-8))
    max(var(--space-4), env(safe-area-inset-left));
}

.page-header {
  display: flex;
  min-width: 0;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.page-heading {
  min-width: 0;
  margin: 0;
  color: var(--color-ink);
  font-size: 1.5rem;
  overflow-wrap: anywhere;
}

.page-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.app-content {
  min-width: 0;
}

.minimal-header {
  min-height: 56px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.minimal-header__inner {
  width: min(100%, 720px);
  margin: 0 auto;
  padding:
    max(12px, env(safe-area-inset-top))
    max(20px, env(safe-area-inset-right))
    12px
    max(20px, env(safe-area-inset-left));
}

.site-name {
  margin: 0;
  color: var(--color-ink);
  font-size: 1rem;
  font-weight: 750;
}

.page-shell {
  display: grid;
  width: 100%;
  place-items: start center;
  padding:
    var(--space-8)
    max(var(--space-4), env(safe-area-inset-right))
    max(var(--space-8), env(safe-area-inset-bottom))
    max(var(--space-4), env(safe-area-inset-left));
}

.page-panel {
  width: min(100%, 520px);
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
}

.page-title {
  margin: 0 0 var(--space-6);
  font-size: 1.5rem;
  overflow-wrap: anywhere;
}

.lead {
  margin: -12px 0 var(--space-6);
  color: var(--color-muted);
}

.request-id {
  margin: 0 0 var(--space-6);
  color: var(--color-muted);
  overflow-wrap: anywhere;
}

@media (max-width: 520px) {
  .page-shell {
    place-items: start stretch;
    padding-top: var(--space-5);
  }

  .page-panel {
    padding: 22px 18px;
  }

  .button-row {
    align-items: stretch;
    flex-direction: column;
  }

  .button-row .button {
    width: 100%;
  }
}

@media (min-width: 768px) {
  .app-frame {
    display: grid;
    grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
    grid-template-rows: auto minmax(0, 1fr);
  }

  .app-header {
    grid-column: 1;
    grid-row: 1;
    padding: var(--space-4);
    border-right: 1px solid var(--color-border);
  }

  .app-user__name {
    display: none;
  }

  .app-nav {
    position: sticky;
    top: 0;
    grid-column: 1;
    grid-row: 2;
    display: flex;
    min-height: 0;
    height: calc(100vh - var(--header-height));
    align-items: stretch;
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-3);
    border-top: 0;
    border-right: 1px solid var(--color-border);
  }

  .nav-link {
    min-height: 44px;
    align-items: center;
    justify-content: flex-start;
    flex-direction: row;
    gap: var(--space-3);
    padding: 10px 12px;
    font-size: 0.925rem;
    text-align: left;
  }

  .app-main {
    grid-column: 2;
    grid-row: 1 / 3;
    padding: var(--space-8);
  }
}