.app-layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.main-container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 16px 64px;
  flex: 1;
}

.navbar {
  border-bottom: 3px solid var(--color-strong-cyan);
  background: var(--color-surface);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.navbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  transition: opacity 0.15s ease;
}

.navbar-brand:hover {
  opacity: 0.9;
}

.navbar-brand:active {
  transform: scale(0.98);
}

.logo-symbol {
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-strong-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.1rem;
  color: #ffffff;
}

.brand-text-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-text {
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--color-text-main);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-text-main);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  min-height: 44px;
  min-width: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.nav-link:hover {
  background: var(--color-frosted-blue);
}

.nav-link:active {
  transform: scale(0.96);
}

.nav-link.active {
  background: var(--color-strong-cyan);
  color: #ffffff;
}

.badge-dev-tag {
  background: var(--color-frosted-blue);
  color: var(--color-text-main);
  border: 1px solid var(--color-strong-cyan);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 9999px;
  font-family: var(--font-mono);
}

.app-footer {
  border-top: 1px solid var(--color-border);
  padding: 24px 16px;
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-meta-wrap {
  display: flex;
  gap: 16px;
  align-items: center;
}

.footer-version {
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.footer-link {
  min-height: 44px;
  min-width: 44px;
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  color: var(--color-strong-cyan);
  font-weight: 600;
  transition: all 0.15s ease;
}

.footer-link:hover {
  opacity: 0.85;
  text-decoration: underline;
}

.footer-link:active {
  transform: scale(0.96);
}

@media (max-width: 640px) {
  .navbar-inner {
    padding: 8px 12px;
    flex-wrap: wrap;
    gap: 8px;
  }
  .nav-links {
    gap: 6px;
  }
  .nav-link {
    padding: 6px 10px;
    font-size: 0.82rem;
  }
  .main-container {
    padding: 16px 12px 48px;
  }
  .logo-text {
    font-size: 1.1rem;
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}