@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&family=Playfair+Display:ital,wght@0,500;0,600;1,400&display=swap";:root{--bg-primary:#f8fafc;--bg-secondary:#fff;--bg-sidebar:#f1f5f9;--bg-controls:#f8fafc;--bg-tab-active:#fff;--bg-tab-inactive:#f1f5f9;--border-color:#e2e8f0;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#94a3b8;--accent-color:#4f46e5;--accent-hover:#4338ca;--accent-light:#4f46e51a;--error-color:#ef4444;--error-hover:#dc2626;--shadow-sm:0 1px 3px #0000000d;--shadow-md:0 4px 6px -1px #0000000d, 0 2px 4px -1px #00000008;--shadow-lg:0 10px 15px -3px #0000000d, 0 4px 6px -2px #00000005;--glass-bg:#ffffffbf;--glass-border:#e2e8f0cc;--glass-blur:blur(12px);--font-sans:"Inter", system-ui, -apple-system, sans-serif;--font-serif:"Playfair Display", Georgia, serif;--font-mono:"JetBrains Mono", monospace;--transition-default:all .25s cubic-bezier(.4, 0, .2, 1)}[data-theme=dark]{--bg-primary:#070a13;--bg-secondary:#0f1422;--bg-sidebar:#090d1a;--bg-controls:#0b0f1d;--bg-tab-active:#0f1422;--bg-tab-inactive:#090d1a;--border-color:#1e293b;--text-primary:#f8fafc;--text-secondary:#94a3b8;--text-muted:#64748b;--accent-color:#818cf8;--accent-hover:#6366f1;--accent-light:#818cf826;--error-color:#f87171;--error-hover:#ef4444;--shadow-sm:0 1px 3px #0000004d;--shadow-md:0 4px 6px -1px #0000004d, 0 2px 4px -1px #0003;--shadow-lg:0 10px 15px -3px #0006, 0 4px 6px -2px #0000004d;--glass-bg:#0f1422cc;--glass-border:#1e293bcc}[data-theme=sepia]{--bg-primary:#f4ebd4;--bg-secondary:#fbf5e6;--bg-sidebar:#eae0c6;--bg-controls:#ebdcb9;--bg-tab-active:#fbf5e6;--bg-tab-inactive:#eae0c6;--border-color:#dcd0b4;--text-primary:#433422;--text-secondary:#705e47;--text-muted:#a39077;--accent-color:#925828;--accent-hover:#7b461c;--accent-light:#9258281a;--error-color:#c2410c;--error-hover:#9a3412;--shadow-sm:0 1px 3px #4334220d;--shadow-md:0 4px 6px -1px #4334220d, 0 2px 4px -1px #43342208;--shadow-lg:0 10px 15px -3px #43342212, 0 4px 6px -2px #4334220d;--glass-bg:#fbf5e6d9;--glass-border:#dcd0b4cc}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;height:100vh;transition:background-color .3s,color .3s;overflow:hidden}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app-layout{grid-template-rows:64px 1fr 36px;width:100vw;height:100vh;display:grid}.app-footer{background-color:var(--glass-bg);border-top:1px solid var(--glass-border);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);z-index:10;color:var(--text-secondary);justify-content:space-between;align-items:center;padding:0 24px;font-size:.75rem;display:flex;box-shadow:0 -1px 3px #00000005}.footer-copyright a{color:var(--text-primary);transition:var(--transition-default);font-weight:600;text-decoration:none}.footer-copyright a:hover{color:var(--accent-color)}.footer-donation{align-items:center;display:inline-flex}.coffee-link{color:var(--text-primary);background-color:var(--bg-sidebar);border:1px solid var(--border-color);transition:var(--transition-default);border-radius:6px;align-items:center;gap:6px;padding:3px 8px;font-weight:500;text-decoration:none;display:inline-flex}.coffee-link:hover{background-color:var(--accent-color);color:#fff;border-color:var(--accent-color);box-shadow:var(--shadow-sm)}.coffee-icon{fill:currentColor;width:14px;height:14px}.app-header{background-color:var(--glass-bg);border-bottom:1px solid var(--glass-border);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);z-index:10;box-shadow:var(--shadow-sm);justify-content:space-between;align-items:center;padding:0 24px;display:flex}.brand-section{align-items:center;gap:12px;display:flex}.brand-logo{object-fit:contain;width:26px;height:26px;animation:3s ease-in-out infinite pulse-slow}.app-title{letter-spacing:-.5px;background:linear-gradient(135deg, var(--accent-color), var(--text-primary));-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:1.25rem;font-weight:700}.header-actions{align-items:center;gap:16px;display:flex}.btn{cursor:pointer;transition:var(--transition-default);border:1px solid var(--border-color);background-color:var(--bg-secondary);color:var(--text-primary);border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:8px 16px;font-size:.875rem;font-weight:500;display:inline-flex}.btn:hover{background-color:var(--bg-sidebar);border-color:var(--text-muted)}.btn-primary{background-color:var(--accent-color);border-color:var(--accent-color);color:#fff}.btn-primary:hover{background-color:var(--accent-hover);border-color:var(--accent-hover);box-shadow:0 4px 12px #4f46e533}.file-input-hidden{display:none}.app-workspace{grid-template-rows:48px 40px auto;display:grid;position:relative;overflow:hidden}.workspace-tabs{background-color:var(--bg-sidebar);border-bottom:1px solid var(--border-color);align-items:flex-end;gap:4px;padding:0 16px;display:flex;overflow-x:auto}.tab-item{background-color:var(--bg-tab-inactive);height:38px;color:var(--text-secondary);cursor:pointer;transition:var(--transition-default);border:1px solid #0000;border-bottom:none;border-radius:8px 8px 0 0;align-items:center;gap:8px;max-width:200px;padding:8px 16px;font-size:.875rem;font-weight:500;display:inline-flex;position:relative}.tab-item:hover{background-color:var(--border-color);color:var(--text-primary)}.tab-item.active{background-color:var(--bg-tab-active);color:var(--text-primary);border-color:var(--border-color);border-bottom:1px solid var(--bg-tab-active);z-index:2}.tab-title-input{color:inherit;font-family:inherit;font-size:inherit;font-weight:inherit;background:0 0;border:none;outline:none;width:100%;max-width:120px}.tab-close-btn{color:var(--text-muted);cursor:pointer;width:18px;height:18px;transition:var(--transition-default);background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;font-size:14px;display:inline-flex}.tab-close-btn:hover{color:var(--error-color);background-color:#ef444426}.btn-new-tab{color:var(--text-muted);cursor:pointer;width:38px;height:38px;transition:var(--transition-default);background:0 0;border:none;border-radius:8px 8px 0 0;justify-content:center;align-items:center;padding:8px;font-size:1.25rem;display:inline-flex}.btn-new-tab:hover{background-color:var(--border-color);color:var(--text-primary)}.workspace-controls{background-color:var(--bg-controls);border-bottom:1px solid var(--border-color);color:var(--text-secondary);justify-content:space-between;align-items:center;padding:0 24px;font-size:.8rem;display:flex}.control-group{align-items:center;gap:12px;display:flex}.layout-toggle{border:1px solid var(--border-color);background-color:var(--bg-secondary);border-radius:6px;display:flex;overflow:hidden}.layout-btn{color:var(--text-secondary);cursor:pointer;transition:var(--transition-default);background:0 0;border:none;padding:4px 12px;font-size:.8rem;font-weight:500}.layout-btn:hover{background-color:var(--bg-sidebar)}.layout-btn.active{background-color:var(--accent-color);color:#fff}.font-ctrl-btn{border:1px solid var(--border-color);background-color:var(--bg-secondary);cursor:pointer;width:24px;height:24px;color:var(--text-primary);transition:var(--transition-default);border-radius:4px;justify-content:center;align-items:center;font-size:.75rem;font-weight:600;display:inline-flex}.font-ctrl-btn:hover{background-color:var(--bg-sidebar)}.theme-selector{border:1px solid var(--border-color);background-color:var(--bg-secondary);color:var(--text-primary);cursor:pointer;border-radius:6px;outline:none;padding:4px 8px;font-size:.8rem;font-weight:500}.dropzone-overlay{border:3px dashed var(--accent-color);z-index:100;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);pointer-events:none;opacity:0;background-color:#4f46e526;flex-direction:column;justify-content:center;align-items:center;transition:opacity .25s;display:flex;position:absolute;inset:0}.dropzone-overlay.active{opacity:1}.dropzone-msg{background-color:var(--bg-secondary);box-shadow:var(--shadow-lg);text-align:center;border:1px solid var(--border-color);border-radius:12px;padding:24px 48px}.dropzone-msg h3{color:var(--accent-color);margin-bottom:8px;font-size:1.25rem}.dropzone-msg p{color:var(--text-secondary);font-size:.875rem}.panels-container{background-color:var(--bg-secondary);width:100%;height:100%;display:grid;overflow:hidden}.panels-container.layout-split{grid-template-columns:1fr 1fr}.panels-container.layout-editor,.panels-container.layout-preview{grid-template-columns:1fr}.panel{flex-direction:column;height:100%;transition:width .3s;display:flex;overflow:hidden}.panel-editor{border-right:1px solid var(--border-color)}.panels-container.layout-editor .panel-preview,.panels-container.layout-preview .panel-editor{display:none}.markdown-editor-input{resize:none;width:100%;height:100%;font-family:var(--font-mono);background-color:var(--bg-secondary);color:var(--text-primary);border:none;outline:none;padding:24px;font-size:.95rem;line-height:1.6;transition:font-size .2s}.empty-workspace-state{text-align:center;background-color:var(--bg-secondary);flex-direction:column;justify-content:center;align-items:center;height:100%;padding:48px;display:flex}.empty-illustration{margin-bottom:24px;font-size:4rem}.empty-workspace-state h2{margin-bottom:12px;font-size:1.5rem;font-weight:700}.empty-workspace-state p{color:var(--text-secondary);max-width:420px;margin-bottom:24px;font-size:1rem}.markdown-preview-container{background-color:var(--bg-secondary);height:100%;color:var(--text-primary);padding:32px 40px;line-height:1.7;overflow-y:auto}.markdown-preview{max-width:740px;margin:0 auto}.markdown-preview>:first-child{margin-top:0}.markdown-preview h1,.markdown-preview h2,.markdown-preview h3,.markdown-preview h4{color:var(--text-primary);margin-top:1.8rem;margin-bottom:.8rem;font-weight:700;line-height:1.35}.markdown-preview h1{border-bottom:2px solid var(--border-color);font-size:2.2rem;font-family:var(--font-serif);padding-bottom:8px}.markdown-preview h2{border-bottom:1px solid var(--border-color);padding-bottom:6px;font-size:1.6rem}.markdown-preview h3{font-size:1.25rem}.markdown-preview h4{font-size:1.05rem}.markdown-preview p{margin-bottom:1.2rem}.markdown-preview strong{font-weight:600}.markdown-preview a{color:var(--accent-color);border-bottom:1px dashed var(--accent-color);transition:var(--transition-default);text-decoration:none}.markdown-preview a:hover{color:var(--accent-hover);border-bottom-style:solid}.markdown-preview ul,.markdown-preview ol{margin-bottom:1.2rem;padding-left:24px}.markdown-preview li{margin-bottom:.4rem}.markdown-preview li>ul,.markdown-preview li>ol{margin-top:.4rem;margin-bottom:0}.markdown-preview input[type=checkbox]{accent-color:var(--accent-color);cursor:default;margin-right:8px}.markdown-preview blockquote{border-left:4px solid var(--accent-color);color:var(--text-secondary);background-color:var(--accent-light);border-radius:0 6px 6px 0;margin:1.5rem 0;padding-top:8px;padding-bottom:8px;padding-left:20px;font-style:italic}.markdown-preview table{border-collapse:collapse;width:100%;margin:1.5rem 0;font-size:.9rem}.markdown-preview th,.markdown-preview td{border:1px solid var(--border-color);text-align:left;padding:10px 14px}.markdown-preview th{background-color:var(--bg-sidebar);font-weight:600}.markdown-preview tr:nth-child(2n){background-color:#00000005}[data-theme=dark] .markdown-preview tr:nth-child(2n){background-color:#ffffff05}.markdown-preview code{font-family:var(--font-mono);background-color:var(--bg-sidebar);color:var(--text-primary);border-radius:4px;padding:2px 6px;font-size:.85rem}.markdown-preview pre{background-color:var(--bg-sidebar);border:1px solid var(--border-color);border-radius:8px;margin:1.5rem 0;padding:16px;overflow-x:auto}.markdown-preview pre code{color:inherit;background-color:#0000;border-radius:0;padding:0;font-size:.85rem;display:block}@keyframes pulse-slow{0%,to{opacity:.9;transform:scale(1)}50%{opacity:1;transform:scale(1.08)}}