:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#9945ff;--accent-bg:#9945ff1a;--accent-border:#9945ff80;--error:#dc2626;--error-bg:#dc262614;--surface:#f9f9fb;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, "Cascadia Code", "Fira Code", Consolas, monospace;font:16px/145% var(--sans);letter-spacing:.18px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--text:#9ca3af;--text-h:#f3f4f6;--bg:#0f0f13;--border:#2e303a;--code-bg:#1a1b23;--accent:#c084fc;--accent-bg:#c084fc26;--accent-border:#c084fc80;--error:#f87171;--error-bg:#f871711a;--surface:#16171d}}body{justify-content:center;align-items:center;min-height:100vh;margin:0;display:flex}#app{box-sizing:border-box;width:1126px;max-width:100%;margin:0 auto;padding:32px 20px}#center{flex-direction:column;align-items:center;gap:24px;display:flex}h1{font-family:var(--heading);letter-spacing:-.72px;color:var(--text-h);margin:0;font-size:36px;font-weight:700}.subtitle{color:var(--text);text-align:center;margin:0;font-size:16px}.subtitle code{font-family:var(--mono);background:var(--code-bg);color:var(--text-h);border-radius:3px;padding:2px 6px;font-size:14px}.converter{flex-direction:column;gap:20px;width:100%;max-width:800px;display:flex}.direction-toggle{border:1px solid var(--border);border-radius:8px;align-self:center;display:flex;overflow:hidden}.dir-btn{font-family:var(--sans);color:var(--text);cursor:pointer;background:0 0;border:none;padding:8px 20px;font-size:14px;font-weight:600;transition:background .15s,color .15s}.dir-btn.active{background:var(--accent);color:#fff}.dir-btn:not(.active):hover{background:var(--accent-bg);color:var(--accent)}.io-pair{align-items:flex-start;gap:16px;display:flex}.io-box{flex-direction:column;flex:1;gap:6px;display:flex}.io-box label{color:var(--text-h);text-transform:uppercase;letter-spacing:.5px;font-size:13px;font-weight:600}.io-box textarea{font-family:var(--mono);border:1px solid var(--border);background:var(--surface);color:var(--text-h);resize:vertical;border-radius:8px;min-height:100px;padding:12px;font-size:13px;line-height:1.5;transition:border-color .15s}.io-box textarea:focus{border-color:var(--accent-border);box-shadow:0 0 0 3px var(--accent-bg);outline:none}.io-box textarea[readonly]{background:var(--code-bg);color:var(--text);cursor:default}.arrow{color:var(--accent);flex-shrink:0;padding-top:28px;font-size:24px}.convert-btn{font-family:var(--sans);background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:8px;align-self:center;padding:10px 32px;font-size:15px;font-weight:600;transition:opacity .15s,transform .1s}.convert-btn:hover{opacity:.9}.convert-btn:active{transform:scale(.98)}.error-msg{color:var(--error);background:var(--error-bg);text-align:center;border-radius:6px;min-height:20px;margin:0;padding:8px 16px;font-size:14px}.error-msg:empty{display:none}@media (width<=640px){h1{font-size:24px}.io-pair{flex-direction:column}.arrow{text-align:center;padding-top:0;transform:rotate(90deg)}.dir-btn{padding:8px 14px;font-size:13px}}