body {
    background-image: none;
    background-color: #f9f9f9;
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: var(--color-strong);
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header a {
    color: white;
    text-decoration: none;
}

.logo {
    font-weight: 900;
    font-size: 1.5rem;
    font-family: 'Montserrat', sans-serif;
}

.guide-container {
    display: flex;
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.sidebar {
    width: 280px;
    background-color: white;
    border-right: 1px solid #e0e0e0;
    padding: 2rem 1rem;
    position: sticky;
    top: 70px;
    height: calc(100vh - 70px);
    overflow-y: auto;
}

.sidebar ul {
    list-style: none;
    padding: 0;
}

.sidebar li {
    margin-bottom: 0.5rem;
}

.sidebar a {
    display: block;
    padding: 0.75rem 1rem;
    color: #555;
    text-decoration: none;
    border-radius: 6px;
    transition: background-color 0.2s, color 0.2s;
    font-weight: 500;
}

.sidebar a:hover {
    background-color: #f0f0f0;
    color: var(--color-strong);
}

.sidebar a.active {
    background-color: var(--color-light);
    color: var(--color-strong);
    font-weight: 700;
}

.content {
    flex: 1;
    padding: 3rem 4rem;
    background-color: white;
    max-width: 900px;
}

.content h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--color-strong);
    border-bottom: 1px solid #eee;
    padding-bottom: 1rem;
}

.content p {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    color: #444;
}

.lang-toggle-container {
    position: static;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-left: auto;
}

.lang-bg {
    background-color: rgba(255, 255, 255, 0.2);
}

@media (max-width: 768px) {
    .guide-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        position: static;
        border-right: none;
        border-bottom: 1px solid #e0e0e0;
        padding: 1rem;
    }

    .content {
        padding: 2rem 1rem;
    }
    
    header {
        padding: 1rem;
    }
}