.header {
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border-light);
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.header-logo-area {
    flex: 0 0 auto;
    min-width: 50px;
    display: flex;
    align-items: center;
}

.header-nav {
    display: flex;
    gap: 15px;
}

.nav-link {
    text-decoration: none;
    color: var(--color-text);
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-weight: var(--font-weight-medium);
}

.nav-link:hover {
    color: var(--color-primary);
    background-color: var(--color-hover-overlay);
}

.header-actions {
    display: flex;
    gap: 10px;
}

.mobile-nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
    background: none;
    border: 1px solid var(--color-border);
    cursor: pointer;
}

.mobile-nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--color-text);
}

.language-selector {
    position: relative;
}

.language-toggle {
    padding: 8px;
    border: 1px solid var(--color-border);
    background: var(--color-background);
    cursor: pointer;
}

.language-flag {
    width: 20px;
    height: 15px;
}

.language-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--color-background);
    border: 1px solid var(--color-border);
    min-width: 150px;
    margin-top: 5px;
}

.language-dropdown.open {
    display: block;
}

.language-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 15px;
    cursor: pointer;
    text-decoration: none;
    color: var(--color-text);
}

.language-option:hover {
    background: var(--color-hover-overlay);
    text-decoration: none;
}

.language-option .language-flag {
    flex-shrink: 0;
}

.header-user-avatar {
    display: flex;
    align-items: center;
}

.header-user-avatar-display {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--color-border);
}

.header-user-avatar-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.header-user-avatar-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary);
    color: #ffffff;
    font-weight: bold;
    font-size: 16px;
    text-transform: uppercase;
}

@media (max-width: 768px) {
    .header {
        padding: 15px 20px;
    }
    
    .mobile-nav-toggle {
        display: flex;
    }
    
    .header-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-background);
        border-top: 1px solid var(--color-border);
        padding: 10px;
        max-width: 100%;
    }
    
    .header-nav.open {
        display: flex;
    }
    
    .nav-link {
        padding: 12px;
    }
    
    .header-user-avatar {
        display: none;
    }
    
    .language-dropdown {
        right: 0;
        left: auto;
    }
}