:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--font-heading: "Outfit", -apple-system, sans-serif;--font-body: "Plus Jakarta Sans", -apple-system, sans-serif;--bg-dark: #0f172a;--bg-card: #1e293b;--bg-card-hover: #334155;--border-color: rgba(255, 255, 255, .1);--border-active: #6366f1;--primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);--primary-glow: 0 0 25px rgba(99, 102, 241, .35);--accent-green: #10b981;--accent-emerald: #059669;--accent-purple: #8b5cf6;--accent-pink: #ec4899;--text-main: #f8fafc;--text-muted: #94a3b8;--text-dim: #64748b}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);background:var(--bg-dark);color:var(--text-main);height:100vh;width:100vw;overflow:hidden;-webkit-font-smoothing:antialiased}.app-container{display:flex;flex-direction:column;height:100vh;width:100vw;background:radial-gradient(circle at 50% 0%,#1e1b4b,#0f172a 70%)}.navbar{height:64px;background:#0f172ad9;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;padding:0 1.5rem;flex-shrink:0;z-index:50}.logo-wrapper{display:flex;align-items:center;gap:10px;cursor:pointer}.logo-icon{width:38px;height:38px;background:var(--primary-gradient);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;box-shadow:var(--primary-glow)}.logo-text{font-family:var(--font-heading);font-weight:800;font-size:1.25rem;background:linear-gradient(135deg,#fff,#cbd5e1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;display:flex;align-items:center;gap:8px}.badge-pro{font-size:.65rem;font-weight:700;padding:2px 6px;border-radius:4px;background:#6366f133;color:#818cf8;border:1px solid rgba(99,102,241,.4);letter-spacing:.5px;text-transform:uppercase}.cost-panel{display:flex;align-items:center;background:#1e293bb3;border:1px solid var(--border-color);padding:6px 14px;border-radius:30px;gap:16px;font-size:.85rem;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.cost-item{display:flex;align-items:center;gap:6px}.cost-label{color:var(--text-muted);font-size:.75rem;text-transform:uppercase;letter-spacing:.5px}.cost-value-red{color:#f87171;font-weight:700}.cost-value-green{color:#34d399;font-weight:700}.cost-sub{color:var(--text-dim);font-size:.7rem}.cost-divider{width:1px;height:16px;background:var(--border-color)}.controls{display:flex;gap:10px;align-items:center}.page-input-wrapper{display:flex;align-items:center;gap:6px;background:#1e293bcc;border:1px solid var(--border-color);padding:4px 10px;border-radius:8px;font-size:.85rem;color:var(--text-muted)}.page-num-input{width:42px;background:#0f172a99;border:1px solid var(--border-color);color:#fff;border-radius:4px;text-align:center;padding:2px;font-weight:600;font-family:inherit}.page-num-input:focus{outline:none;border-color:#6366f1}.btn-icon{display:inline-flex;align-items:center;justify-content:center;gap:6px}.nav-btn{padding:8px 14px;border:1px solid var(--border-color);background:#1e293bcc;color:var(--text-main);border-radius:8px;cursor:pointer;font-weight:600;font-size:.85rem;transition:all .2s ease;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.nav-btn:hover:not(:disabled){background:#334155;border-color:#6366f1;transform:translateY(-1px)}.nav-btn:disabled{opacity:.4;cursor:not-allowed}.btn-download{background:linear-gradient(135deg,#10b981,#059669);color:#fff;border:none;font-weight:700;box-shadow:0 4px 14px #10b9814d}.btn-download:hover:not(:disabled){background:linear-gradient(135deg,#059669,#047857);box-shadow:0 6px 20px #10b98166}.hero-container{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem;overflow-y:auto}.hero-card{width:100%;max-width:580px;background:#1e293b99;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.12);border-radius:20px;padding:2.5rem;text-align:center;box-shadow:0 25px 50px -12px #00000080;animation:fadeIn .4s ease-out}.hero-title{font-family:var(--font-heading);font-size:2rem;font-weight:800;margin-bottom:.5rem;background:linear-gradient(135deg,#fff,#94a3b8);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero-subtitle{color:var(--text-muted);font-size:.95rem;margin-bottom:2rem}.dropzone{border:2px dashed rgba(99,102,241,.4);border-radius:14px;padding:2.5rem 1.5rem;background:#0f172a66;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.dropzone:hover,.dropzone.active{border-color:#818cf8;background:#6366f114;transform:translateY(-2px)}.dropzone-icon{font-size:3rem;margin-bottom:1rem;display:inline-block;transition:transform .3s ease}.dropzone:hover .dropzone-icon{transform:scale(1.1)}.dropzone-text{font-size:1rem;font-weight:600;color:var(--text-main);margin-bottom:.25rem}.dropzone-sub{font-size:.8rem;color:var(--text-dim)}.file-info-badge{display:flex;align-items:center;justify-content:center;gap:10px;background:#6366f126;border:1px solid rgba(99,102,241,.3);padding:10px 16px;border-radius:10px;color:#a5b4fc;font-weight:600;margin-top:1.5rem}.btn-submit-upload{width:100%;margin-top:1.5rem;padding:14px;background:var(--primary-gradient);color:#fff;border:none;border-radius:12px;font-size:1.05rem;font-weight:700;cursor:pointer;transition:all .2s ease;box-shadow:var(--primary-glow)}.btn-submit-upload:hover:not(:disabled){opacity:.95;transform:translateY(-2px);box-shadow:0 0 30px #6366f180}.btn-submit-upload:disabled{opacity:.6;cursor:not-allowed}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;max-width:780px;width:100%;margin-top:2.5rem}.feature-card{background:#1e293b66;border:1px solid var(--border-color);border-radius:12px;padding:16px;text-align:left}.feature-icon{font-size:1.3rem;margin-bottom:8px}.feature-title{font-size:.9rem;font-weight:700;color:var(--text-main);margin-bottom:4px}.feature-desc{font-size:.75rem;color:var(--text-muted);line-height:1.4}.split-viewer{flex:1;display:flex;overflow:hidden;background:#090d16;gap:2px;position:relative}.panel{flex:1;background:#111827;display:flex;flex-direction:column;position:relative}.panel-header{height:44px;background:#111827f2;border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;padding:0 16px;font-family:var(--font-heading);font-weight:600;font-size:.9rem;color:var(--text-muted)}.panel-title{display:flex;align-items:center;gap:8px;color:var(--text-main)}.iframe-wrapper{flex:1;position:relative;width:100%;height:100%;background:#1e293b}iframe{width:100%;height:100%;border:none;display:block}.loading-overlay{position:absolute;inset:0;background:#0f172ad9;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;z-index:30;color:#fff}.spinner{width:48px;height:48px;border:4px solid rgba(99,102,241,.2);border-top-color:#6366f1;border-radius:50%;animation:spin 1s infinite linear}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.editor-container{padding:20px;overflow-y:auto;height:100%;background:#0f172a}.editor-search{width:100%;padding:10px 14px;background:#1e293b;border:1px solid var(--border-color);border-radius:8px;color:#fff;font-family:inherit;margin-bottom:16px}.editor-search:focus{outline:none;border-color:#6366f1}.block-card{background:#1e293b;border:1px solid var(--border-color);border-radius:10px;padding:14px;margin-bottom:12px;transition:border-color .2s}.block-card:hover{border-color:#6366f166}.block-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.block-id{font-size:.75rem;font-family:monospace;color:#818cf8;background:#6366f11a;padding:2px 6px;border-radius:4px}.block-controls{display:flex;align-items:center;gap:12px;font-size:.8rem;color:var(--text-muted)}.block-textarea{width:100%;min-height:70px;padding:10px;background:#0f172a;border:1px solid var(--border-color);border-radius:6px;color:#fff;font-family:inherit;font-size:.95rem;line-height:1.5;resize:vertical}.block-textarea:focus{outline:none;border-color:#6366f1}.btn-save-editor{width:100%;padding:14px;background:linear-gradient(135deg,#10b981,#059669);color:#fff;border:none;border-radius:10px;font-size:1rem;font-weight:700;cursor:pointer;box-shadow:0 4px 14px #10b9814d;margin-top:10px}.btn-save-editor:hover{background:linear-gradient(135deg,#059669,#047857)}.status-bar{height:32px;background:#0f172a;border-top:1px solid var(--border-color);padding:0 1.5rem;display:flex;align-items:center;justify-content:space-between;font-size:.8rem;color:var(--text-muted);z-index:40}.status-pulse{width:8px;height:8px;background:#10b981;border-radius:50%;display:inline-block;margin-right:8px;box-shadow:0 0 8px #10b981}@keyframes fadeIn{0%{opacity:0;transform:translateY(10deg)}to{opacity:1;transform:translateY(0)}}