@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap";.app-shell{background:radial-gradient(ellipse 80% 50% at 50% -20%, #6366f11f 0%, transparent 60%), var(--bg-base);flex-direction:column;min-height:100vh;display:flex}.header{padding:0 var(--space-6);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);z-index:50;background:#0e1220d9;justify-content:space-between;align-items:center;height:60px;display:flex;position:sticky;top:0}.header-brand{align-items:center;gap:var(--space-3);display:flex}.header-logo{background:linear-gradient(135deg, var(--accent), var(--violet));border-radius:var(--radius-md);width:32px;height:32px;box-shadow:0 0 16px var(--accent-glow);justify-content:center;align-items:center;font-size:1rem;display:flex}.header-logo-img{object-fit:contain;width:36px;height:36px}[data-theme=dark] .header-logo-img{filter:invert()}.header-name{background:linear-gradient(135deg, var(--text-primary), var(--accent-light));-webkit-text-fill-color:transparent;letter-spacing:-.02em;-webkit-background-clip:text;background-clip:text;font-size:1.15rem;font-weight:700}.header-tagline{color:var(--text-muted);margin-left:var(--space-1);font-size:.72rem;font-weight:400}.nav-tabs{gap:var(--space-1);background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);padding:3px;display:flex}.nav-tab{align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);border-radius:calc(var(--radius-lg) - 2px);cursor:pointer;transition:all var(--transition-fast);color:var(--text-muted);font-size:.83rem;font-weight:500;font-family:var(--font-sans);background:0 0;border:none;display:flex;position:relative}.nav-tab:hover{color:var(--text-secondary);background:var(--bg-hover)}.nav-tab.active{background:var(--accent);color:#fff;box-shadow:0 0 16px var(--accent-glow)}.nav-tab-icon{font-size:.95rem}.header-right{align-items:center;gap:var(--space-3);display:flex}.header-pill{align-items:center;gap:var(--space-2);padding:var(--space-1) var(--space-3);background:var(--success-dim);border-radius:var(--radius-full);color:var(--success);letter-spacing:.04em;border:1px solid #22c55e40;font-size:.72rem;font-weight:600;display:flex}.header-dot{background:var(--success);border-radius:50%;width:6px;height:6px;animation:2s infinite pulse}.main-content{padding:var(--space-6);gap:var(--space-6);flex-direction:column;flex:1;width:100%;max-width:1600px;margin:0 auto;display:flex}.theme-toggle{border-radius:var(--radius-md);background:var(--bg-elevated);border:1px solid var(--border);cursor:pointer;width:36px;height:36px;transition:all var(--transition-fast);color:var(--text-secondary);flex-shrink:0;justify-content:center;align-items:center;font-size:1rem;display:flex}.theme-toggle:hover{background:var(--bg-hover);border-color:var(--border-hover);color:var(--text-primary);transform:rotate(20deg)scale(1.1)}.theme-toggle:active{transform:scale(.93)}.footer{border-top:1px solid var(--border);background:var(--bg-surface);padding:var(--space-8) var(--space-6) var(--space-6);margin-top:auto}.footer-inner{gap:var(--space-8);grid-template-columns:2fr 1fr 1fr 1fr;max-width:1600px;margin:0 auto;display:grid}.footer-brand{gap:var(--space-3);flex-direction:column;display:flex}.footer-logo-row{align-items:center;gap:var(--space-3);display:flex}.footer-logo{background:linear-gradient(135deg, var(--accent), var(--violet));border-radius:var(--radius-md);width:28px;height:28px;box-shadow:0 0 12px var(--accent-glow);flex-shrink:0;justify-content:center;align-items:center;font-size:.85rem;display:flex}.footer-logo-img{object-fit:contain;width:32px;height:32px}[data-theme=dark] .footer-logo-img{filter:invert()}.footer-name{background:linear-gradient(135deg, var(--text-primary), var(--accent-light));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:1rem;font-weight:700}.footer-desc{color:var(--text-muted);max-width:260px;font-size:.8rem;line-height:1.7}.footer-privacy-cta{align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);background:var(--success-dim);border-radius:var(--radius-md);color:var(--success);cursor:pointer;transition:all var(--transition-fast);width:fit-content;font-size:.78rem;font-weight:600;font-family:var(--font-sans);border:1px solid #22c55e4d;display:inline-flex}.footer-privacy-cta:hover{background:#22c55e33;border-color:#22c55e80;transform:translateY(-1px)}.footer-col{gap:var(--space-3);flex-direction:column;display:flex}.footer-col-title{text-transform:uppercase;letter-spacing:.08em;color:var(--text-secondary);font-size:.72rem;font-weight:700}.footer-links{gap:var(--space-2);flex-direction:column;display:flex}.footer-link{color:var(--text-muted);cursor:pointer;transition:color var(--transition-fast);align-items:center;gap:var(--space-2);font-size:.8rem;font-family:var(--font-sans);text-align:left;background:0 0;border:none;padding:0;text-decoration:none;display:flex}.footer-link:hover{color:var(--accent-light)}.footer-bottom{max-width:1600px;margin:var(--space-6) auto 0;padding-top:var(--space-5);border-top:1px solid var(--border);justify-content:space-between;align-items:center;gap:var(--space-4);flex-wrap:wrap;display:flex}.footer-copy{color:var(--text-muted);font-size:.75rem;line-height:1.6}.footer-badges{align-items:center;gap:var(--space-2);flex-wrap:wrap;display:flex}.footer-badge{border-radius:var(--radius-full);letter-spacing:.04em;border:1px solid;align-items:center;gap:5px;padding:3px 10px;font-size:.68rem;font-weight:600;display:inline-flex}.footer-badge-green{background:var(--success-dim);color:var(--success);border-color:#22c55e40}.footer-badge-blue{background:var(--info-dim);color:var(--info);border-color:#38bdf840}.footer-badge-purple{background:var(--accent-dim);color:var(--accent-light);border-color:#6366f140}.privacy-modal{background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius-xl);width:560px;max-width:95vw;max-height:85vh;box-shadow:var(--shadow-lg), var(--shadow-glow);flex-direction:column;animation:.25s fadeIn;display:flex;overflow:hidden}.privacy-modal-header{padding:var(--space-5) var(--space-6);border-bottom:1px solid var(--border);align-items:flex-start;gap:var(--space-4);background:linear-gradient(135deg,#6366f11a,#a78bfa0f);display:flex}.privacy-shield-icon{background:linear-gradient(135deg, var(--success), #16a34a);border-radius:var(--radius-lg);flex-shrink:0;justify-content:center;align-items:center;width:48px;height:48px;font-size:1.4rem;display:flex;box-shadow:0 0 20px #22c55e4d}.privacy-modal-title-group{flex:1}.privacy-modal-title{color:var(--text-primary);margin-bottom:4px;font-size:1.1rem;font-weight:700}.privacy-modal-subtitle{color:var(--text-muted);font-size:.8rem}.privacy-modal-body{padding:var(--space-5) var(--space-6);gap:var(--space-5);flex-direction:column;flex:1;display:flex;overflow-y:auto}.privacy-highlight{align-items:flex-start;gap:var(--space-3);padding:var(--space-4);background:var(--success-dim);border-radius:var(--radius-lg);border:1px solid #22c55e40;display:flex}.privacy-highlight-icon{flex-shrink:0;margin-top:2px;font-size:1.3rem}.privacy-highlight-text{color:var(--text-secondary);font-size:.85rem;line-height:1.7}.privacy-highlight-text strong{color:var(--success)}.privacy-section{gap:var(--space-3);flex-direction:column;display:flex}.privacy-section-title{color:var(--text-primary);text-transform:uppercase;letter-spacing:.05em;align-items:center;gap:var(--space-2);font-size:.78rem;font-weight:700;display:flex}.privacy-items{gap:var(--space-2);flex-direction:column;display:flex}.privacy-item{align-items:flex-start;gap:var(--space-3);color:var(--text-secondary);font-size:.82rem;line-height:1.6;display:flex}.privacy-item-dot{background:var(--accent);border-radius:50%;flex-shrink:0;width:6px;height:6px;margin-top:7px}.privacy-item-dot.green{background:var(--success)}.privacy-item-dot.red{background:var(--error)}.privacy-modal-footer{padding:var(--space-4) var(--space-6);background:var(--bg-elevated);border-top:1px solid var(--border);justify-content:space-between;align-items:center;gap:var(--space-3);display:flex}.privacy-trust-badge{align-items:center;gap:var(--space-2);color:var(--text-muted);font-size:.75rem;display:flex}.privacy-trust-badge strong{color:var(--success)}@media (width<=1024px){.footer-inner{gap:var(--space-6);grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}@media (width<=768px){.header{padding:0 var(--space-4);gap:var(--space-2);height:auto;min-height:60px;padding-top:var(--space-2);padding-bottom:var(--space-2);flex-wrap:wrap}.header-tagline{display:none}.nav-tabs{scrollbar-width:none;order:3;gap:0;width:100%;padding-bottom:2px;overflow-x:auto}.nav-tabs::-webkit-scrollbar{display:none}.nav-tab{white-space:nowrap;padding:var(--space-2) var(--space-3);flex-shrink:0;font-size:.8rem}.main-content{padding:var(--space-3) var(--space-3) var(--space-4)}.footer-inner{gap:var(--space-4);grid-template-columns:1fr}.footer-brand{grid-column:unset}.footer-bottom{align-items:flex-start;gap:var(--space-3);flex-direction:column}.footer-badges{flex-wrap:wrap}.privacy-modal{width:95vw;max-height:92vh}}@media (width<=480px){.header-name{font-size:1rem}.header-logo-img{width:28px;height:28px}.nav-tab-icon{display:none}.main-content{padding:var(--space-2) var(--space-2) var(--space-3)}}.toast-container{bottom:var(--space-6);right:var(--space-6);z-index:1000;gap:var(--space-2);pointer-events:none;flex-direction:column;display:flex;position:fixed}.toast{align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);border-radius:var(--radius-lg);min-width:280px;max-width:400px;box-shadow:var(--shadow-lg);pointer-events:auto;animation:slideInRight var(--transition-normal) ease;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid;font-size:.85rem;font-weight:500;display:flex}.toast-success{background:var(--bg-panel);color:var(--text-primary);border-color:#22c55e4d}.toast-error{background:var(--bg-panel);color:var(--text-primary);border-color:#ef44444d}.toast-info{background:var(--bg-panel);color:var(--text-primary);border-color:#38bdf84d}.toast-icon{flex-shrink:0;font-size:1rem}.toast-message{flex:1}.toast-close{color:var(--text-muted);cursor:pointer;transition:color var(--transition-fast);background:0 0;border:none;flex-shrink:0;padding:0;font-size:1rem}.toast-close:hover{color:var(--text-primary)}.history-layout{gap:var(--space-4);flex-direction:column;display:flex}.history-header{justify-content:space-between;align-items:center;display:flex}.history-title{color:var(--text-primary);font-size:1.1rem;font-weight:600}.history-grid{gap:var(--space-4);grid-template-columns:repeat(auto-fill,minmax(320px,1fr));display:grid}.history-card{background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-4);gap:var(--space-3);transition:all var(--transition-normal);animation:fadeIn var(--transition-normal) ease;flex-direction:column;display:flex}.history-card:hover{border-color:var(--border-accent);box-shadow:var(--shadow-glow);transform:translateY(-1px)}.history-card-header{justify-content:space-between;align-items:center;gap:var(--space-2);display:flex}.history-formats{align-items:center;gap:var(--space-2);display:flex}.history-arrow{color:var(--text-muted);font-size:.9rem}.history-card-time{color:var(--text-muted);font-size:.72rem}.history-snippet{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:var(--space-3);font-family:var(--font-mono);color:var(--text-muted);white-space:pre-wrap;word-break:break-all;max-height:80px;font-size:.72rem;line-height:1.6;position:relative;overflow:hidden}.history-snippet:after{content:"";background:linear-gradient(transparent, var(--bg-surface));height:30px;position:absolute;bottom:0;left:0;right:0}.history-card-actions{gap:var(--space-2);display:flex}.modal-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:200;background:#080b14d9;justify-content:center;align-items:center;animation:.2s fadeIn;display:flex;position:fixed;inset:0}.modal{background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius-xl);padding:var(--space-6);width:420px;box-shadow:var(--shadow-lg), var(--shadow-glow);gap:var(--space-5);flex-direction:column;animation:.25s fadeIn;display:flex}.modal-header{justify-content:space-between;align-items:center;display:flex}.modal-title{color:var(--text-primary);font-size:1rem;font-weight:600}.modal-close{color:var(--text-muted);cursor:pointer;transition:color var(--transition-fast);border-radius:var(--radius-sm);background:0 0;border:none;padding:2px;font-size:1.2rem}.modal-close:hover{color:var(--text-primary);background:var(--bg-hover)}.modal-section{gap:var(--space-3);flex-direction:column;display:flex}.modal-section-title{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem;font-weight:600}.format-grid{gap:var(--space-2);grid-template-columns:repeat(3,1fr);display:grid}.format-btn{align-items:center;gap:var(--space-1);padding:var(--space-3);background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);font-family:var(--font-sans);flex-direction:column;display:flex}.format-btn:hover{border-color:var(--border-hover);background:var(--bg-hover)}.format-btn.active{border-color:var(--accent);background:var(--accent-dim);box-shadow:0 0 12px var(--accent-glow)}.format-btn-icon{font-size:1.3rem}.format-btn-label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em;font-size:.75rem;font-weight:600}.format-info-btn{background:var(--bg-surface);border:1.5px solid var(--border-accent);width:26px;height:26px;color:var(--text-accent);cursor:pointer;transition:all var(--transition-fast);font-size:.85rem;font-weight:800;font-family:var(--font-sans);box-shadow:0 0 8px var(--accent-dim);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;line-height:1;display:inline-flex}.format-info-btn:hover{background:var(--accent);border-color:var(--accent-light);color:#fff;box-shadow:0 0 12px var(--accent-glow);transform:scale(1.1)}.format-info-modal{background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius-xl);width:620px;max-width:95vw;max-height:88vh;box-shadow:var(--shadow-lg), var(--shadow-glow);flex-direction:column;animation:.22s fadeIn;display:flex;overflow:hidden}.format-info-header{padding:var(--space-5) var(--space-6);align-items:center;gap:var(--space-4);border-bottom:1px solid var(--border);flex-shrink:0;display:flex}.format-info-icon-wrap{border-radius:var(--radius-lg);flex-shrink:0;justify-content:center;align-items:center;width:52px;height:52px;font-size:1.6rem;display:flex}.format-info-title-group{flex:1}.format-info-name{color:var(--text-primary);margin-bottom:3px;font-size:1.2rem;font-weight:700}.format-info-ext{border-radius:var(--radius-sm);font-size:.72rem;font-weight:600;font-family:var(--font-mono);margin-right:var(--space-2);align-items:center;padding:2px 8px;display:inline-flex}.format-info-tagline{color:var(--text-muted);margin-top:var(--space-1);font-size:.82rem}.format-info-body{padding:var(--space-5) var(--space-6);gap:var(--space-5);flex-direction:column;flex:1;display:flex;overflow-y:auto}.format-info-section{gap:var(--space-2);flex-direction:column;display:flex}.format-info-section-title{text-transform:uppercase;letter-spacing:.07em;color:var(--text-muted);align-items:center;gap:var(--space-2);font-size:.72rem;font-weight:700;display:flex}.format-info-desc{color:var(--text-secondary);font-size:.85rem;line-height:1.75}.format-use-cases{gap:var(--space-2);flex-wrap:wrap;display:flex}.format-use-case-tag{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-full);color:var(--text-secondary);padding:4px 12px;font-size:.75rem}.format-pros-cons{gap:var(--space-3);grid-template-columns:1fr 1fr;display:grid}.format-pros,.format-cons{background:var(--bg-elevated);border-radius:var(--radius-md);padding:var(--space-3);gap:var(--space-2);flex-direction:column;display:flex}.format-pros{border:1px solid #22c55e33}.format-cons{border:1px solid #ef444433}.format-pros-title{color:var(--success);text-transform:uppercase;letter-spacing:.05em;font-size:.72rem;font-weight:700}.format-cons-title{color:var(--error);text-transform:uppercase;letter-spacing:.05em;font-size:.72rem;font-weight:700}.format-pro-item,.format-con-item{color:var(--text-secondary);align-items:flex-start;gap:var(--space-2);font-size:.78rem;line-height:1.5;display:flex}.format-pro-item:before{content:"✓";color:var(--success);flex-shrink:0;font-weight:700}.format-con-item:before{content:"✗";color:var(--error);flex-shrink:0;font-weight:700}.format-example{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:var(--space-3) var(--space-4);font-family:var(--font-mono);color:var(--text-secondary);white-space:pre;max-height:180px;font-size:.75rem;line-height:1.7;overflow:auto}.format-info-footer{padding:var(--space-4) var(--space-6);background:var(--bg-elevated);border-top:1px solid var(--border);justify-content:space-between;align-items:center;gap:var(--space-3);flex-shrink:0;display:flex}.format-nav-btns{gap:var(--space-2);display:flex}@keyframes formatFlash{0%{border-color:var(--border);box-shadow:0 0 #22c55e00}30%{border-color:#22c55e99;box-shadow:0 0 0 4px #22c55e40}to{border-color:var(--border-accent);box-shadow:0 0 #22c55e00}}.editor-panel--formatted{animation:1.8s forwards formatFlash}.btn-format-success{background:var(--success-dim)!important;color:var(--success)!important;border-color:#22c55e66!important}.toolbar-divider{background:var(--border);width:1px;height:20px;margin:0 var(--space-1);flex-shrink:0}.converter-layout{gap:var(--space-4);flex-direction:column;flex:1;min-height:0;display:flex}.converter-panels{align-items:stretch;gap:var(--space-4);flex-direction:row;flex:1;width:100%;min-height:0;display:flex}.editor-panel{background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius-lg);transition:border-color var(--transition-normal);flex-direction:column;flex:1;min-width:260px;min-height:850px;max-height:100vh;display:flex;overflow:hidden}.converter-panels .editor-panel:first-child{resize:both;flex:0 50%;max-width:85%;min-height:850px;overflow:hidden}.converter-panels .editor-panel:last-child{flex:1;min-height:850px}.editor-panel:focus-within{border-color:var(--border-accent)}.editor-header{padding:var(--space-3) var(--space-4);background:var(--bg-elevated);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:var(--space-3);flex-shrink:0;display:flex}.editor-header-left{align-items:center;gap:var(--space-3);display:flex}.editor-header-right{align-items:center;gap:var(--space-2);display:flex}.editor-body{flex-direction:column;flex:1;min-height:850px;display:flex;position:relative;overflow:hidden}.editor-textarea-wrap{flex-direction:column;flex:1;min-height:0;display:flex;position:relative;overflow:auto}.editor-line-nums{background:var(--code-gutter);border-right:1px solid var(--border);width:40px;padding:var(--space-4) 0;pointer-events:none;z-index:1;flex-direction:column;display:flex;position:absolute;top:0;bottom:0;left:0;overflow:hidden}.line-num{font-family:var(--font-mono);color:var(--text-muted);text-align:right;padding:0 var(--space-2);height:1.7em;padding-right:10px;font-size:.72rem;line-height:1.7}.code-viewer-row{transition:background-color var(--transition-fast)}.code-viewer-row:hover td{background:var(--bg-hover)!important}.editor-footer{padding:var(--space-2) var(--space-4);background:var(--bg-elevated);border-top:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;display:flex}.editor-stats{color:var(--text-muted);gap:var(--space-4);font-size:.72rem;display:flex}.converter-divider{justify-content:center;align-items:center;gap:var(--space-3);flex-direction:column;flex-shrink:0;width:48px;display:flex}.convert-btn-vert{align-items:center;gap:var(--space-2);padding:var(--space-4) var(--space-3);background:linear-gradient(180deg, var(--accent), #4f46e5);border-radius:var(--radius-lg);cursor:pointer;color:#fff;font-family:var(--font-sans);transition:all var(--transition-normal);box-shadow:0 0 20px var(--accent-glow), var(--shadow-md);writing-mode:vertical-lr;text-orientation:mixed;letter-spacing:.05em;border:none;flex-direction:column;font-size:.75rem;font-weight:600;display:flex}.convert-btn-vert:hover{box-shadow:0 0 32px 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1px 3px #00000059;--shadow-md:0 4px 16px #00000073;--shadow-lg:0 8px 32px #0000008c;--shadow-accent:0 0 20px var(--accent-glow);--shadow-glow:0 0 40px #88bdf22e;--transition-fast:.15s ease;--transition-normal:.25s ease;--transition-slow:.4s ease;--font-sans:"Inter", system-ui, sans-serif;--font-mono:"JetBrains Mono", "Fira Code", monospace;--code-bg:#1e2a35;--code-gutter:#243040;--code-key:#9cdcfe;--code-string:#ce9178;--code-number:#b5cea8;--code-bool:#569cd6;--code-null:#569cd6;--code-punct:#d4d4d4;--code-comment:#6a9955;--code-tag:#4ec9b0;--code-attr:#9cdcfe;--code-attr-val:#ce9178;--code-directive:#c586c0;--code-yaml-sep:#d4d4d4;--code-csv-header:#dcdcaa}[data-theme=light]{--bg-base:#eef4fb;--bg-surface:#e3edf7;--bg-elevated:#fff;--bg-panel:#fff;--bg-hover:#daeaf8;--bg-active:#bdddfc;--accent:#5a9fd4;--accent-light:#88bdf2;--accent-dim:#88bdf22e;--accent-glow:#88bdf240;--text-primary:#1d2d3e;--text-secondary:#384959;--text-muted:#6a89a7;--text-accent:#3a7cb8;--border:#3849591f;--border-accent:#88bdf273;--border-hover:#38495938;--shadow-sm:0 1px 3px #3849591a;--shadow-md:0 4px 16px #38495924;--shadow-lg:0 8px 32px #3849592e;--shadow-glow:0 0 40px 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