:root{--primary-color: #0066cc;--primary-hover: #0052a3;--secondary-color: #6c757d;--success-color: #28a745;--warning-color: #ffc107;--error-color: #dc3545;--bg-color: #f5f7fa;--card-bg: #ffffff;--border-color: #e1e5eb;--text-color: #333;--text-muted: #6c757d}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background-color:var(--bg-color);color:var(--text-color);line-height:1.6}#app{min-height:100vh}.compose-page,.preview-page{max-width:900px;margin:0 auto;padding:20px}.page-header{text-align:center;margin-bottom:24px}.page-header h1{margin:0 0 8px;font-size:2rem;color:var(--text-color)}.subtitle{margin:0;color:var(--text-muted)}.editor-container{background:var(--card-bg);border-radius:8px;box-shadow:0 2px 8px #0000001a;overflow:hidden}.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:4px;padding:8px 12px;background:#f8f9fa;border-bottom:1px solid var(--border-color)}.toolbar-group{display:flex;gap:2px}.toolbar-divider{width:1px;height:24px;background:var(--border-color);margin:0 8px}.toolbar button{display:flex;align-items:center;justify-content:center;min-width:32px;height:32px;padding:4px 8px;border:1px solid transparent;border-radius:4px;background:transparent;color:var(--text-color);cursor:pointer;font-size:14px;transition:all .15s ease}.toolbar button:hover{background:#e9ecef;border-color:var(--border-color)}.toolbar button:active{background:#dee2e6}.color-picker-label{display:flex;align-items:center;gap:4px;padding:4px 8px;cursor:pointer;font-weight:600}.color-picker-label input[type=color]{width:24px;height:24px;border:none;padding:0;cursor:pointer}.editor{min-height:350px;padding:16px}.editor .tiptap{outline:none;min-height:300px}.editor .tiptap p.is-editor-empty:first-child:before{content:attr(data-placeholder);color:#adb5bd;pointer-events:none;float:left;height:0}.editor .tiptap h1,.editor .tiptap h2,.editor .tiptap 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#0000000d}.stats{display:flex;flex-wrap:wrap;gap:24px;justify-content:center}.stat{display:flex;align-items:center;gap:6px;font-size:14px}.stat-label{color:var(--text-muted)}.status-indicator{font-weight:500;padding:4px 12px;border-radius:20px}.status-ok{color:var(--success-color)}.status-warning{color:#856404;background:#fff3cd}.status-error{color:#fff;background:var(--error-color)}.action-bar{display:flex;justify-content:center;gap:12px;margin-top:24px}.btn-primary,.btn-secondary{padding:12px 24px;font-size:16px;font-weight:500;border:none;border-radius:8px;cursor:pointer;transition:all .15s ease}.btn-primary{background:var(--primary-color);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-secondary{background:#e9ecef;color:var(--text-color)}.btn-secondary:hover{background:#dee2e6}.preview-mode{background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;padding-top:0!important}.preview-mode .page-header h1{color:#fff}.preview-mode .subtitle{color:#ffffffd9}.preview-mode-banner{display:flex;align-items:center;justify-content:center;gap:12px;padding:12px 20px;background:#0000004d;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:2px solid rgba(255,255,255,.2);margin-bottom:20px}.preview-mode-icon{font-size:24px}.preview-mode-text{font-size:14px;font-weight:700;letter-spacing:2px;color:#fff;text-transform:uppercase}.preview-mode-hint{font-size:13px;color:#ffffffbf;padding-left:12px;border-left:1px solid rgba(255,255,255,.3)}.preview-mode .preview-stats{background:#fffffff2}.preview-mode .btn-primary{background:#fff;color:#764ba2}.preview-mode .btn-primary:hover{background:#f0f0f0}.preview-mode .btn-secondary{background:#fff3;color:#fff;border:1px solid rgba(255,255,255,.4)}.preview-mode .btn-secondary:hover{background:#ffffff4d}.preview-container{background:var(--card-bg);border-radius:8px;box-shadow:0 4px 20px #0003;overflow:hidden}.preview-frame{border:none;border-radius:8px;overflow:hidden}.preview-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:linear-gradient(90deg,#667eea,#764ba2);border-bottom:none}.preview-badge{display:inline-block;padding:4px 12px;background:#fff3;color:#fff;border-radius:4px;font-size:12px;font-weight:500}.preview-readonly-badge{display:inline-block;padding:4px 12px;background:#ffffffe6;color:#764ba2;border-radius:4px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.preview-content{padding:24px;min-height:300px;background:#fff}.preview-content img{max-width:100%;height:auto}.error-container{text-align:center;padding:60px 20px;background:var(--card-bg);border-radius:8px;box-shadow:0 2px 8px #0000001a}.error-icon{font-size:48px;margin-bottom:16px}.error-container h2{margin:0 0 12px;color:var(--error-color)}.error-container p{color:var(--text-muted);margin-bottom:24px}@media(max-width:600px){.compose-page,.preview-page{padding:12px}.toolbar{gap:2px;padding:6px}.toolbar-divider{margin:0 4px}.stats{gap:12px}.image-settings{flex-wrap:wrap}.image-hint{width:100%;margin-left:0;margin-top:8px}}