/* 🔗 統一HEADER樣式 */
.unified-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
    width: 100%;
}

.unified-nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.unified-logo {
    font-size: 1.8rem;
    font-weight: bold;
}

.unified-logo .logo-link {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.unified-logo .logo-link:hover {
    opacity: 0.9;
    color: white;
}

.unified-nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.unified-nav-menu a {
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 8px 16px;
    border-radius: 20px;
}

.unified-nav-menu a:hover {
    background: rgba(255,255,255,0.1);
    color: white;
    transform: translateY(-1px);
}

.unified-nav-menu a.active {
    background: rgba(255,255,255,0.2);
    font-weight: 600;
}

.unified-nav-menu a.back-to-home {
    background: rgba(255,255,255,0.15);
    font-weight: 500;
}

@media (max-width: 768px) {
    .unified-nav-menu {
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    .unified-logo {
        font-size: 1.5rem;
    }
    
    .unified-nav-container {
        padding: 0 15px;
    }
}