:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80;--sans:system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, SFMono-Regular, Consolas, monospace}@media (prefers-color-scheme:dark){:root{--text:#9ca3af;--text-h:#f3f4f6;--bg:#16171d;--border:#2e303a;--code-bg:#1f2028;--accent:#c084fc;--accent-bg:#c084fc26}}*{box-sizing:border-box;margin:0;padding:0}body{font:16px/1.5 var(--sans);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{width:100%;min-height:100vh}.app{background:var(--bg);min-height:100vh;color:var(--text);flex-direction:column;display:flex}.header{text-align:center;background:linear-gradient(135deg, var(--accent-bg) 0%, var(--bg) 100%);border-bottom:1px solid var(--border);padding:48px 24px 32px}.header h1{letter-spacing:-.5px;margin:0 0 8px;font-size:32px}.header p{opacity:.8;margin:0;font-size:16px}.main{box-sizing:border-box;flex-direction:column;flex:1;align-items:center;gap:20px;width:100%;max-width:720px;margin:0 auto;padding:32px 24px;display:flex}.upload-section{align-items:center;gap:12px;width:100%;display:flex}.file-input{display:none}.upload-btn{border:1px solid var(--border);background:var(--bg);color:var(--text-h);cursor:pointer;border-radius:8px;padding:10px 20px;font-size:14px;transition:border-color .2s}.upload-btn:hover{border-color:var(--accent)}.config-input{border:1px solid var(--border);background:var(--code-bg);width:100%;min-height:300px;color:var(--text-h);font-family:var(--mono);resize:vertical;box-sizing:border-box;border-radius:8px;padding:16px;font-size:13px;line-height:1.5}.config-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-bg);outline:none}.config-input::placeholder{color:var(--text);opacity:.5}.convert-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:12px 32px;font-size:16px;font-weight:600;transition:opacity .2s}.convert-btn:hover:not(:disabled){opacity:.9}.convert-btn:disabled{opacity:.5;cursor:not-allowed}.error{color:#e53e3e;box-sizing:border-box;background:#fff5f5;border:1px solid #fed7d7;border-radius:8px;width:100%;padding:12px 16px;font-size:14px}.success{color:#22543d;box-sizing:border-box;background:#f0fff4;border:1px solid #c6f6d5;border-radius:8px;width:100%;padding:12px 16px;font-size:14px}.footer{text-align:center;border-top:1px solid var(--border);opacity:.7;padding:24px;font-size:13px}@media (prefers-color-scheme:dark){.error{background:#2d1414;border-color:#5c2b2b}.success{background:#142d1c;border-color:#2b5c38}}