/* ============================================
   Editor Styles
   ============================================ */

.editor-page {
    min-height: 100vh;
    background: var(--bg-light);
    padding-top: 80px;
}

.editor-container {
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
    gap: 2rem;
    padding: 2rem;
}

/* Sidebar */
.editor-sidebar {
    width: 300px;
    background: var(--bg-light);
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 1.5rem;
    height: fit-content;
    position: sticky;
    top: 100px;
}

.sidebar-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gray-200);
}

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

.sidebar-section h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.block-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.block-btn {
    padding: 0.75rem;
    background: var(--bg-light);
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    cursor: pointer;
    text-align: left;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.block-btn:hover {
    background: var(--gray-50);
    border-color: var(--primary-500);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.form-control {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 0.875rem;
    background: var(--bg-light);
    color: var(--text-light);
}

/* Editor Main */
.editor-main {
    flex: 1;
    max-width: 800px;
}

.editor-header {
    margin-bottom: 2rem;
}

.article-title-input {
    width: 100%;
    font-size: 2.5rem;
    font-weight: 700;
    border: none;
    outline: none;
    background: transparent;
    color: var(--text-light);
    margin-bottom: 1rem;
    font-family: var(--font-serif);
}

.article-title-input::placeholder {
    color: var(--gray-400);
}

.article-excerpt-input {
    width: 100%;
    font-size: 1.125rem;
    border: none;
    outline: none;
    background: transparent;
    color: var(--gray-600);
    resize: none;
    min-height: 60px;
    margin-bottom: 1rem;
}

.article-excerpt-input::placeholder {
    color: var(--gray-400);
}

.editor-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.editor-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-200);
}

.word-count {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* Blocks */
.blocks-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.editor-block {
    background: var(--bg-light);
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 1rem;
    transition: all 0.2s;
}

.editor-block:hover {
    border-color: var(--primary-300);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.block-toolbar {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--gray-100);
    align-items: center;
}

.block-type-badge {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-600);
    background: var(--primary-50);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.block-action-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
    color: var(--gray-500);
    transition: color 0.2s;
}

.block-action-btn:hover {
    color: var(--gray-900);
}

.block-content {
    margin-top: 1rem;
}

.block-textarea {
    width: 100%;
    min-height: 100px;
    padding: 0.75rem;
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    font-size: 1rem;
    font-family: var(--font-sans);
    resize: vertical;
    background: var(--bg-light);
    color: var(--text-light);
}

.block-heading-input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    font-size: 1.5rem;
    font-weight: 600;
    font-family: var(--font-serif);
    background: var(--bg-light);
    color: var(--text-light);
}

/* Learning Blocks Styles */
.takeaways-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.takeaway-item {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.takeaway-input {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--gray-200);
    border-radius: 4px;
    font-size: 0.875rem;
}

.concept-card-editor {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.concept-card-editor .concept-term,
.concept-card-editor .concept-definition,
.concept-card-editor .concept-example,
.concept-card-editor .concept-link {
    padding: 0.75rem;
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    font-size: 0.875rem;
}

.concept-card-editor .concept-definition,
.concept-card-editor .concept-example {
    min-height: 80px;
    resize: vertical;
}

.quiz-editor {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.quiz-question-editor {
    padding: 1rem;
    background: var(--gray-50);
    border-radius: 6px;
}

.quiz-question-input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    font-size: 1rem;
    margin-bottom: 1rem;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.quiz-option-editor {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.quiz-option-input {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--gray-200);
    border-radius: 4px;
}

.code-editor {
    width: 100%;
    min-height: 200px;
    padding: 1rem;
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    background: var(--gray-900);
    color: #f9fafb;
    resize: vertical;
}

.image-url-input,
.image-alt-input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    margin-bottom: 0.5rem;
}

.image-preview {
    max-width: 100%;
    border-radius: 6px;
    margin-top: 1rem;
}

/* Citations & Snippets Lists */
.citations-list,
.snippets-list {
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 1rem;
}

.citation-item,
.snippet-item {
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: 6px;
    margin-bottom: 0.5rem;
    position: relative;
}

.citation-title {
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.citation-author,
.citation-year {
    font-size: 0.75rem;
    color: var(--gray-600);
}

.citation-link {
    font-size: 0.75rem;
    color: var(--primary-600);
    text-decoration: none;
}

.citation-delete {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray-400);
    font-size: 1.25rem;
}

.snippet-name {
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.snippet-tags {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
    margin-bottom: 0.5rem;
}

.snippet-tag {
    font-size: 0.75rem;
    padding: 0.125rem 0.5rem;
    background: var(--primary-100);
    color: var(--primary-700);
    border-radius: 12px;
}

.snippet-actions {
    display: flex;
    gap: 0.5rem;
}

.snippet-insert,
.snippet-delete {
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.snippet-insert {
    background: var(--primary-500);
    color: white;
}

.snippet-delete {
    background: none;
    color: var(--gray-400);
    font-size: 1rem;
}

.empty-state {
    color: var(--gray-500);
    font-size: 0.875rem;
    text-align: center;
    padding: 1rem;
}

/* QA Results */
.qa-results {
    margin-top: 1rem;
}

.qa-score {
    text-align: center;
    padding: 1rem;
    background: var(--gray-50);
    border-radius: 6px;
    margin-bottom: 1rem;
}

.qa-score-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-600);
}

.qa-score-label {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.qa-issues,
.qa-suggestions {
    margin-top: 1rem;
}

.qa-issues h4,
.qa-suggestions h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.qa-issues ul,
.qa-suggestions ul {
    list-style: none;
    padding: 0;
}

.qa-issue,
.qa-suggestion-item {
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: 6px;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.qa-issue.qa-error {
    border-left: 4px solid #ef4444;
}

.qa-issue.qa-warning {
    border-left: 4px solid #f59e0b;
}

.qa-suggestion {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--gray-600);
    font-style: italic;
}

.qa-success {
    padding: 1rem;
    background: #10b981;
    color: white;
    border-radius: 6px;
    text-align: center;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-light);
    border-radius: 8px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--gray-500);
    line-height: 1;
}

.modal-body {
    padding: 1.5rem;
}

/* Version History */
.version-item {
    padding: 1rem;
    background: var(--gray-50);
    border-radius: 6px;
    margin-bottom: 1rem;
}

.version-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.version-date {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.version-changelog {
    font-size: 0.875rem;
    color: var(--gray-700);
    margin-top: 0.5rem;
    padding: 0.75rem;
    background: white;
    border-radius: 4px;
}

.version-diff {
    font-size: 0.875rem;
}

.diff-item {
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: 4px;
}

.diff-old {
    color: #ef4444;
    text-decoration: line-through;
    margin: 0.25rem 0;
}

.diff-new {
    color: #10b981;
    margin: 0.25rem 0;
}

/* Responsive */
@media (max-width: 1024px) {
    .editor-container {
        flex-direction: column;
    }
    
    .editor-sidebar {
        width: 100%;
        position: static;
    }
}