/* --- Markdown HTML Converter Styles --- */
:root{--mdc-brand:#7C3AED;--mdc-brand-dark:#2d3436;--mdc-brand-hover:#6D28D9;--mdc-border:#e2e8f0;--mdc-grey:#636e72;--mdc-light:#f8fafc}
*{box-sizing:border-box}

.mdc-app{font-family:'Inter',system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--mdc-light);min-height:600px;padding:0 0 60px}
.mdc-wrap{max-width:1200px;margin:0 auto;padding:0 20px}

/* Main Window */
.mdc-window{width:100%;max-width:1100px;margin:0 auto;height:82vh;min-height:550px;background:#fff;border-radius:12px;border:1px solid #d1d5db;box-shadow:0 8px 30px rgba(0,0,0,.08);overflow:hidden;display:flex;flex-direction:column;position:relative}

/* Toolbar */
.mdc-toolbar{height:56px;background:#fdfdfc;border-bottom:1px solid var(--mdc-border);display:flex;align-items:center;justify-content:space-between;padding:0 16px;flex-shrink:0;z-index:10;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.mdc-toolbar-group{display:flex;align-items:center;gap:6px}
.mdc-toolbar-sep{width:1px;height:22px;background:#d1d5db;margin:0 4px}

.mdc-btn{display:inline-flex;align-items:center;justify-content:center;gap:5px;padding:6px 10px;background:transparent;border:none;color:#6b7280;border-radius:8px;cursor:pointer;font-size:13px;font-weight:500;transition:all .2s}
.mdc-btn:hover{background:#f3f4f6;color:#111827}
.mdc-btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

.mdc-btn-export{padding:5px 12px;font-weight:600;color:#fff;border-radius:6px;font-size:12px;box-shadow:0 1px 2px rgba(0,0,0,.1)}
.mdc-btn-export:hover{opacity:.9;color:#fff}
.mdc-btn-md{background:#4a5568}.mdc-btn-md:hover{background:#2d3748}
.mdc-btn-word{background:#2b579a}.mdc-btn-word:hover{background:#1f4277}
.mdc-btn-html-export{background:#e34f26}.mdc-btn-html-export:hover{background:#b83e1c}

/* Tab Switcher */
.mdc-tabs{display:flex;background:#f3f4f6;padding:3px;border-radius:8px;border:1px solid var(--mdc-border);box-shadow:inset 0 1px 2px rgba(0,0,0,.05)}
.mdc-tab{padding:6px 16px;border-radius:6px;font-size:13px;font-weight:500;color:#6b7280;cursor:pointer;transition:all .2s;border:none;background:transparent}
.mdc-tab.active{background:#fff;color:#111827;box-shadow:0 1px 3px rgba(0,0,0,.1)}

/* Work Area */
.mdc-work{flex:1;overflow-y:auto;display:flex;flex-direction:column;align-items:center;background:#fff}
.mdc-loading{display:flex;align-items:center;justify-content:center;height:100%;color:#9ca3af;gap:10px;font-size:14px}
.mdc-loading svg{width:24px;height:24px;animation:mdc-spin 1s linear infinite}
@keyframes mdc-spin{to{transform:rotate(360deg)}}

.mdc-content{width:100%;max-width:900px;flex:1;display:none;flex-direction:column;padding:32px 24px}
@media(min-width:640px){.mdc-content{padding:32px 48px}}

/* Panels */
.mdc-panel{flex:1;width:100%;display:none}
.mdc-panel:first-child{display:block}

/* Preview / Rich Text */
.mdc-prose{color:#2c2c2c;line-height:1.6;font-size:1.05rem;outline:none;min-height:100%}
.mdc-prose h1,.mdc-prose h2,.mdc-prose h3{color:#000;font-weight:600;margin-top:1.5em;margin-bottom:.5em}
.mdc-prose h1{font-size:2em}.mdc-prose h2{font-size:1.5em}.mdc-prose h3{font-size:1.25em}
.mdc-prose p{margin-bottom:1em}
.mdc-prose a{color:#d08c2a;text-decoration:none;border-bottom:1px solid transparent;transition:border-color .2s}
.mdc-prose a:hover{border-bottom-color:#d08c2a}
.mdc-prose ul,.mdc-prose ol{padding-left:1.5em;margin-bottom:1em}
.mdc-prose li{margin-bottom:.3em}
.mdc-prose blockquote{border-left:3px solid #d08c2a;margin-left:0;padding-left:1.2em;color:#666;font-style:italic}
.mdc-prose pre{background-color:#f6f6f6;border:1px solid #e5e5e5;padding:1.2em;border-radius:8px;overflow-x:auto;margin-bottom:1em}
.mdc-prose code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.85em;background-color:#f6f6f6;padding:.2em .4em;border-radius:4px;color:#d02a5c}
.mdc-prose pre code{background:transparent;padding:0;color:inherit}
.mdc-prose table{width:100%;border-collapse:collapse;margin-bottom:1em}
.mdc-prose th,.mdc-prose td{border:1px solid #e5e5e5;padding:.5em 1em;text-align:left}
.mdc-prose th{background:#fcfcfc}
.mdc-prose img{max-width:100%;height:auto;border-radius:8px;margin:1em 0;box-shadow:0 4px 6px rgba(0,0,0,.05)}

/* Textareas */
.mdc-textarea{width:100%;min-height:60vh;height:100%;resize:none;outline:none;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:15px;line-height:1.6;color:#24292e;background:transparent;border:none;padding:0}
.mdc-textarea::placeholder{color:#d1d5db}
.mdc-textarea-html{background:#f8f9fa;padding:24px;padding-top:56px;border-radius:12px;border:1px solid var(--mdc-border);font-size:14px}

/* CodeMirror HTML Editor */
.mdc-cm-wrap{width:100%;flex:1;min-height:60vh;border-radius:12px;overflow:hidden;border:1px solid var(--mdc-border);position:relative;background:#1e1e2e}
.mdc-cm-wrap .cm-editor{height:100%;min-height:60vh;font-size:14px;font-family:ui-monospace,SFMono-Regular,'JetBrains Mono',Menlo,Consolas,monospace}
.mdc-cm-wrap .cm-editor .cm-scroller{overflow:auto;padding-top:48px}
.mdc-cm-wrap .cm-editor .cm-content{padding:12px 16px;min-height:calc(60vh - 48px)}
.mdc-cm-wrap .cm-editor .cm-gutters{background:#1e1e2e;border-right:1px solid #313244;color:#6c7086;padding-top:48px}
.mdc-cm-wrap .cm-editor .cm-activeLineGutter{background:#313244}
.mdc-cm-wrap .cm-editor .cm-activeLine{background:rgba(49,50,68,.5)}
.mdc-cm-wrap .cm-editor .cm-selectionBackground{background:rgba(137,180,250,.2)!important}
.mdc-cm-wrap .cm-editor .cm-cursor{border-left:2px solid #cdd6f4}
.mdc-cm-wrap .cm-editor .cm-matchingBracket{background:rgba(137,180,250,.3);outline:1px solid rgba(137,180,250,.5)}
.mdc-cm-wrap .cm-editor.cm-focused{outline:none}
.mdc-cm-wrap .cm-editor .cm-tooltip{background:#313244;color:#cdd6f4;border:1px solid #45475a;border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,.3)}
.mdc-cm-wrap .cm-editor .cm-tooltip-autocomplete ul li[aria-selected]{background:#45475a}
.mdc-cm-wrap .cm-editor .cm-panels{background:#181825;border-bottom:1px solid #313244}
.mdc-cm-wrap .cm-editor .cm-search input,.mdc-cm-wrap .cm-editor .cm-search button{background:#313244;color:#cdd6f4;border:1px solid #45475a;border-radius:4px;padding:2px 8px}
.mdc-cm-wrap .cm-editor .cm-search label{color:#a6adc8}

/* Clean Button */
.mdc-clean-wrap{position:absolute;top:12px;right:12px;z-index:5}
.mdc-btn-clean-html{display:flex;align-items:center;gap:6px;padding:8px 16px;background:#eef2ff;color:#4f46e5;border:1px solid #c7d2fe;border-radius:8px;font-size:13px;font-weight:600;cursor:pointer;box-shadow:0 1px 2px rgba(0,0,0,.05);transition:all .2s}
.mdc-btn-clean-html:hover{background:#e0e7ff;transform:scale(1.03)}
.mdc-btn-clean-html:active{transform:scale(.97)}

/* Scrollbar */
.mdc-work::-webkit-scrollbar{width:8px;height:8px}
.mdc-work::-webkit-scrollbar-track{background:transparent}
.mdc-work::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:10px;border:2px solid #fff}

/* Message */
.mdc-message{position:absolute;top:64px;left:50%;transform:translateX(-50%);z-index:50;background:#1f2937;color:#fff;font-size:13px;padding:8px 20px;border-radius:20px;box-shadow:0 4px 12px rgba(0,0,0,.15);display:none;white-space:nowrap}

/* FAQ */
.mdc-faq{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:8px}
.mdc-faq-item{background:#fff;border:1px solid #e5e3d9;border-radius:12px;overflow:hidden;transition:all .2s}
.mdc-faq-item[open]{box-shadow:0 4px 12px rgba(0,0,0,.08);border-color:var(--mdc-brand)}
.mdc-faq-q{padding:18px 24px;font-size:15px;font-weight:600;color:var(--mdc-brand-dark);cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:12px;transition:background .2s}
.mdc-faq-q:hover{background:#f8f9f4}
.mdc-faq-q::after{content:'＋';font-size:18px;font-weight:700;color:var(--mdc-brand);transition:transform .2s}
.mdc-faq-item[open] .mdc-faq-q::after{content:'−'}
.mdc-faq-q::-webkit-details-marker{display:none}
.mdc-faq-a{padding:0 24px 20px;font-size:14px;line-height:1.7;color:#475569}
.mdc-faq-a ul,.mdc-faq-a ol{margin:8px 0;padding-left:20px}
.mdc-faq-a li{margin-bottom:6px}
.mdc-faq-a kbd{background:#1e293b;color:#f8fafc;border:1px solid #334155;border-radius:4px;padding:2px 8px;font-size:12px;font-family:monospace;box-shadow:0 1px 0 rgba(0,0,0,.3)}
.mdc-faq-a code{background:#f1f5f9;color:#d02a5c;padding:2px 6px;border-radius:4px;font-size:12px;font-family:monospace}

/* Edu Block */
.mdc-edu{max-width:900px;margin:60px auto;background:#fff;padding:36px;border-radius:16px;border:1px solid var(--mdc-border);box-shadow:0 4px 6px rgba(0,0,0,.05)}
.mdc-edu-title{font-size:20px;font-weight:800;color:var(--mdc-brand-dark);margin-bottom:18px;text-transform:uppercase;letter-spacing:-.02em}
.mdc-edu-text{font-size:15px;line-height:1.7;color:#475569;margin-bottom:16px}

/* Modal */
.mdc-modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:1000;display:none;align-items:center;justify-content:center;backdrop-filter:blur(2px)}
.mdc-modal-overlay.active{display:flex}
.mdc-modal-box{background:#fff;border-radius:16px;width:95%;max-width:700px;max-height:80vh;display:flex;flex-direction:column;box-shadow:0 24px 48px rgba(0,0,0,.15);overflow:hidden}
.mdc-modal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--mdc-border);flex-shrink:0}
.mdc-docs-list{display:flex;flex-direction:column;gap:8px;flex:1;overflow-y:auto;padding:20px}
.mdc-doc-row{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;background:#fff;border:1px solid var(--mdc-border);border-radius:12px;transition:all .2s;gap:12px}
.mdc-doc-row:hover{border-color:#6366f1;box-shadow:0 4px 12px rgba(0,0,0,.06)}
.mdc-doc-info{flex:1;min-width:0}
.mdc-doc-info h4{margin:0 0 4px;font-size:14px;font-weight:600;color:var(--mdc-brand-dark);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mdc-doc-info span{font-size:11px;color:#94a3b8}
.mdc-docs-empty{text-align:center;padding:60px 20px;color:#94a3b8;font-size:14px}
.mdc-doc-share{display:flex;flex-direction:column;gap:4px;font-size:11px;margin-right:12px}
.mdc-doc-share select{padding:2px 6px;font-size:11px;border:1px solid var(--mdc-border);border-radius:4px;background:#fff;cursor:pointer}
.mdc-doc-actions{display:flex;gap:4px}
.mdc-doc-actions button{padding:4px 12px;border-radius:6px;font-size:12px;font-weight:600;border:1px solid var(--mdc-border);cursor:pointer;transition:all .15s}
.mdc-doc-btn-open{background:#6366f1;color:#fff;border-color:#6366f1}
.mdc-doc-btn-open:hover{background:#4f46e5}
.mdc-doc-btn-del{background:#fff;color:#ef4444;border-color:#fecaca}
.mdc-doc-btn-del:hover{background:#fef2f2}
.mdc-pagination{display:flex;justify-content:center;align-items:center;gap:12px;padding:16px 0 0;margin-top:auto;border-top:1px solid var(--mdc-border)}
.mdc-pagination span{font-size:12px;color:#64748b}
.mdc-save-indicator{position:fixed;top:20px;left:50%;transform:translateX(-50%);background:#6366f1;color:#fff;padding:8px 20px;border-radius:8px;font-size:13px;font-weight:600;box-shadow:0 4px 12px rgba(0,0,0,.15);z-index:2000;animation:mdc-fadeInOut 2.2s ease;pointer-events:none}
@keyframes mdc-fadeInOut{0%{opacity:0;transform:translateX(-50%) translateY(-10px)}15%{opacity:1;transform:translateX(-50%) translateY(0)}85%{opacity:1}100%{opacity:0}}

/* Rich Text Formatting Toolbar */
.mdc-fmt-toolbar{display:none;align-items:center;gap:2px;padding:8px 12px;background:#fafaf8;border-bottom:1px solid var(--mdc-border);flex-wrap:wrap;position:sticky;top:0;z-index:10}
.mdc-fmt-toolbar.active{display:flex}
.mdc-fmt-toolbar button{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:1px solid transparent;border-radius:6px;background:transparent;cursor:pointer;color:#475569;font-size:14px;font-weight:600;transition:all .15s;padding:0;font-family:inherit}
.mdc-fmt-toolbar button:hover{background:#fff;border-color:var(--mdc-border);color:var(--mdc-brand-dark)}
.mdc-fmt-toolbar button:active{background:#e8e7e2;transform:scale(.95)}
.mdc-fmt-toolbar button.mdc-fmt-wide{width:auto;padding:0 8px;font-size:12px;gap:3px}
.mdc-fmt-sep{width:1px;height:22px;background:#d5d4cd;margin:0 4px;flex-shrink:0}

/* Doc rename */
.mdc-doc-title{cursor:pointer;transition:color .15s}
.mdc-doc-title:hover{color:#6366f1}
.mdc-doc-edit-icon{cursor:pointer;font-size:12px;opacity:.4;transition:opacity .15s}
.mdc-doc-edit-icon:hover{opacity:1}

/* Responsive */
@media(max-width:768px){
  .mdc-window{height:auto;min-height:80vh;border-radius:0;border-left:none;border-right:none}
  .mdc-toolbar{height:auto;flex-wrap:wrap;gap:8px;padding:10px 12px}
  .mdc-toolbar-group{flex-wrap:wrap}
  .mdc-btn-export span{display:none}
  .mdc-content{padding:16px}
}