/**
 * Article Editor Styles
 * Phase 13: Documentation Module - Batch 6
 */

/* ========== Variables ========== */
:root {
    --editor-spacing: clamp(1rem, 2vw, 1.5rem);
    --editor-toolbar-height: 48px;
    --editor-textarea-min-height: 500px;
}

/* ========== Main Container ========== */
.article-editor {
    display: flex;
    flex-direction: column;
    height: 100%;
    animation: fadeIn 0.3s ease-out;
}

/* ========== Header ========== */
.article-editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--editor-spacing);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.article-editor-header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.article-editor-header-left h2 {
    margin: 0;
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--text-primary);
}

.article-editor-header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.editor-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.save-indicator {
    font-size: 0.875rem;
    color: var(--warning);
    font-weight: 500;
}

.status-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-badge.status-draft {
    background: var(--warning);
    color: white;
}

.status-badge.status-published {
    background: var(--success);
    color: white;
}

.status-badge.status-archived {
    background: var(--text-disabled);
    color: white;
}

/* ========== Metadata Form ========== */
.article-editor-metadata {
    padding: var(--editor-spacing);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
}

/* ========== Toolbar ========== */
.article-editor-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--editor-spacing);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.toolbar-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    min-height: 36px;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--surface);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
}

.toolbar-btn:hover {
    background: var(--surface-hover);
    border-color: var(--primary);
    transform: translateY(-1px);
}

.toolbar-btn:active {
    transform: translateY(0);
}

.toolbar-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.toolbar-separator {
    width: 1px;
    height: 24px;
    background: var(--border);
    margin: 0 var(--spacing-xs);
}

/* ========== Editor Content ========== */
.article-editor-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.editor-mode,
.preview-mode {
    flex: 1;
    overflow: auto;
    padding: var(--editor-spacing);
}

.article-editor-textarea {
    width: 100%;
    min-height: var(--editor-textarea-min-height);
    padding: var(--spacing-md);
    border: none;
    background: var(--surface);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: 'Courier New', monospace;
    line-height: 1.6;
    resize: vertical;
    outline: none;
}

.article-editor-textarea::placeholder {
    color: var(--text-disabled);
}

/* ========== Preview Mode ========== */
.article-preview-content {
    max-width: min(800px, 100%);
    margin: 0 auto;
    padding: var(--spacing-lg);
    background: var(--surface);
    border-radius: 8px;
}

.article-preview-content h1,
.article-preview-content h2,
.article-preview-content h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-weight: 600;
}

.article-preview-content h1 {
    font-size: 2rem;
    border-bottom: 2px solid var(--border);
    padding-bottom: var(--spacing-sm);
}

.article-preview-content h2 {
    font-size: 1.75rem;
}

.article-preview-content h3 {
    font-size: 1.5rem;
}

.article-preview-content p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    color: var(--text-primary);
}

.article-preview-content ul,
.article-preview-content ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-xl);
}

.article-preview-content li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.6;
}

.article-preview-content code {
    background: var(--surface-hover);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    color: var(--primary);
}

.article-preview-content pre {
    background: var(--surface-hover);
    padding: var(--spacing-md);
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
}

.article-preview-content pre code {
    background: none;
    padding: 0;
    color: var(--text-primary);
}

.article-preview-content a {
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease;
}

.article-preview-content a:hover {
    border-bottom-color: var(--primary);
}

.article-preview-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: var(--spacing-md) 0;
}

.article-preview-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-md);
}

.article-preview-content table th,
.article-preview-content table td {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border);
    text-align: left;
}

.article-preview-content table th {
    background: var(--surface-hover);
    font-weight: 600;
}

.empty-content {
    color: var(--text-disabled);
    font-style: italic;
    text-align: center;
    padding: var(--spacing-2xl);
}

/* ========== Markdown Help Modal ========== */
.markdown-help {
    padding: var(--spacing-md);
}

.help-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-md);
}

.help-table td {
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--border);
}

.help-table code {
    background: var(--surface-hover);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
}

/* ========== Mobile Adaptivity ========== */
@media (max-width: 768px) {
    .article-editor-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .article-editor-header-right {
        width: 100%;
        justify-content: space-between;
    }
    
    .article-editor-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .toolbar-group {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .article-editor-textarea {
        min-height: 400px;
        font-size: 0.9rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .article-editor-header-left h2 {
        font-size: 1.25rem;
    }
    
    .toolbar-btn {
        min-width: 32px;
        min-height: 32px;
        font-size: 0.75rem;
    }
    
    .article-editor-textarea {
        min-height: 300px;
        padding: var(--spacing-sm);
    }
}

/* ========== High Contrast Theme ========== */
@media (prefers-contrast: high) {
    .article-editor-textarea {
        border: 2px solid var(--text-primary);
    }
    
    .toolbar-btn {
        border-width: 2px;
    }
    
    .form-control {
        border-width: 2px;
    }
}

/* ========== Animations ========== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}