:root {
  --app-shell-width: min(1100px, calc(100vw - 24px));
  --app-shell-gap: 16px;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--color-text);
}

iconify-icon {
  display: inline-block;
  width: 1em;
  height: 1em;
}

.app-nav {
  width: 100%;
  margin: 0;
  padding: 14px 18px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  background: var(--color-panel);
  border: 1px solid var(--color-panel-border);
  border-radius: 0;
  box-shadow: 0 18px 48px var(--color-shadow);
}

.app-nav__brand {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-strong);
}

.app-nav__actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-self: end;
}

.app-nav__icon-button {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-panel-strong);
  color: var(--color-text);
  cursor: pointer;
}

.app-nav__icon-button iconify-icon {
  font-size: 1.05rem;
}

.app-nav__content {
  min-height: 20px;
  display: flex;
  justify-content: center;
  align-self: stretch;
  gap: 0;
  margin-block: -14px;
}

.app-nav__link {
  display: inline-flex;
  align-items: center;
  align-self: stretch;
  min-height: 100%;
  padding: 0 12px;
  border: 1px solid var(--color-border);
  border-radius: 0;
  text-decoration: none;
  background: var(--color-panel-strong);
  color: var(--color-text);
}

.app-nav__link + .app-nav__link {
  border-left: 0;
}

.app-nav__link.is-active {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.app-shell {
  width: 100%;
  margin: 0;
  padding: 0;
}

.page-card {
  width: var(--app-shell-width);
  margin: 12px auto 24px;
  padding: 20px;
  background: var(--color-panel);
  border: 1px solid var(--color-panel-border);
  border-radius: 16px;
  box-shadow: 0 18px 48px var(--color-shadow);
}

.page-card h1 {
  margin-top: 0;
}

@media (max-width: 840px) {
  .app-nav {
    grid-template-columns: 1fr;
  }

  .app-nav__brand,
  .app-nav__actions,
  .app-nav__content {
    justify-self: center;
  }
}