.solo-newsletter-container {
    max-width: 1400px;
    margin: 40px auto;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 8px;
}

.solo-newsletter-container h1 {
    color: #333;
    margin-bottom: 30px;
    font-size: 28px;
}

.solo-newsletter-form {
    background: white;
    padding: 30px;
    border-radius: 8px;
    margin-bottom: 30px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.solo-newsletter-section {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #eee;
}

.solo-newsletter-section:last-child {
    border-bottom: none;
}

.solo-newsletter-section h2 {
    font-size: 18px;
    color: #333;
    margin-bottom: 15px;
    font-weight: 600;
}

.solo-newsletter-section label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
    font-size: 14px;
}

.solo-newsletter-section select,
.featured-find-item select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    transition: border-color 0.2s;
}

.solo-newsletter-section select:focus,
.featured-find-item select:focus {
    outline: none;
    border-color: #0073aa;
    box-shadow: 0 0 0 2px rgba(0, 115, 170, 0.1);
}

.featured-finds-selections {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.featured-find-item {
    display: flex;
    flex-direction: column;
}

.solo-newsletter-hint {
    font-size: 12px;
    color: #666;
    margin-top: 8px;
    font-style: italic;
}

.blog-posts-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid #ddd;
    padding: 15px;
    border-radius: 4px;
    background: #fafafa;
}

.blog-post-checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s;
}

.blog-post-checkbox:hover {
    background: #f0f0f0;
}

.blog-post-checkbox input[type="checkbox"] {
    cursor: pointer;
    margin: 0;
}

.blog-post-checkbox span:first-of-type {
    font-weight: 600;
    color: #333;
    flex: 1;
}

.blog-post-checkbox .post-date {
    font-size: 12px;
    color: #999;
    white-space: nowrap;
}

.button {
    cursor: pointer;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s;
}

.button.button-primary {
    background-color: #0073aa;
    color: white;
}

.button.button-primary:hover {
    background-color: #005a87;
}

.button.button-secondary {
    background-color: #f5f5f5;
    color: #333;
    border: 1px solid #ddd;
}

.button.button-secondary:hover {
    background-color: #eeeeee;
}

.button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.solo-newsletter-preview {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.solo-newsletter-preview h2 {
    color: #333;
    margin-bottom: 25px;
    font-size: 20px;
}

#newsletter-preview-iframe {
    display: block;
    margin: 0 auto;
    max-width: 100%;
}

.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: ' ⏳';
}

@media (max-width: 768px) {
    .solo-newsletter-container {
        padding: 10px;
    }

    .solo-newsletter-form,
    .solo-newsletter-preview {
        padding: 20px;
    }

    .featured-finds-selections {
        grid-template-columns: 1fr;
    }
}