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

.navbar {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 2.25rem; /* +30% from 1.5rem */
  text-decoration: none;
  transition: var(--transition);
}

.nav-brand:hover {
  color: var(--primary-light);
}

/* Square logo: doubled from 2.5rem to 5rem */
.brand-logo {
  width: 5rem;
  height: 5rem;
  object-fit: contain;
  object-position: center;
  display: block;
  border-radius: 4px;
  flex-shrink: 0;
}

.brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 5rem;
  height: 5rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: var(--radius);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Title gradient: medium-dark gold → rusty dark red-gold */
.brand-text {
  letter-spacing: -0.025em;
  background: linear-gradient(135deg, #c9940a 0%, #b5620a 50%, #8b2500 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 0.5rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.875rem;
  transition: var(--transition);
  border: 1px solid transparent;
}

.nav-link:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border);
}

.nav-link.active {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.main-content {
  flex: 1;
}

@media (max-width: 768px) {
  .navbar .container {
    padding: 0.875rem 1rem;
  }
  
  .nav-brand {
    font-size: 1.625rem; /* +30% from 1.25rem */
  }
  
  /* Scale square logo down on mobile (doubled from 2rem) */
  .brand-logo {
    width: 4rem;
    height: 4rem;
  }

  .brand-icon {
    width: 4rem;
    height: 4rem;
  }
  
  .nav-links {
    gap: 0.25rem;
  }
  
  .nav-link span {
    display: none;
  }
  
  .nav-link {
    padding: 0.625rem;
  }
}