:root{--arw-bg:#0b0d12;--arw-card:#0f1219;--arw-card-2:#121622;--arw-text:#e7eaf0;--arw-muted:#a9b0c2;--arw-accent:#6ea8fe;--arw-accent-2:#9b8cff;--arw-border:#23283a;--arw-success:#1fbf75;--arw-error:#ff5c77;--arw-shadow:0 10px 30px rgba(0,0,0,0.45);--arw-radius:18px;--arw-radius-sm:12px;--arw-focus:0 0 0 3px rgba(110,168,254,0.25)}*{box-sizing:border-box}html,body{margin:0;padding:0;background:radial-gradient(1000px 600px at 20% -10%,rgb(110 168 254 / .08),transparent),radial-gradient(1000px 600px at 80% 110%,rgb(155 140 255 / .08),transparent),var(--arw-bg);color:var(--arw-text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Inter,"Helvetica Neue",Arial,"Noto Sans","Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";line-height:1.55}.arw-wrapper{padding:28px 16px}.arw-card{max-width:980px;margin:0 auto;background:linear-gradient(180deg,var(--arw-card),var(--arw-card-2));border:1px solid var(--arw-border);border-radius:var(--arw-radius);box-shadow:var(--arw-shadow);padding:22px}.arw-header{margin-bottom:10px}.arw-header h2{margin:0 0 6px;font-size:24px;display:flex;align-items:center;gap:10px}.arw-subtitle{margin:0;color:var(--arw-muted);font-size:14px}.arw-row{margin-top:16px}.arw-label{display:block;margin:0 0 8px;color:var(--arw-muted);font-weight:600;letter-spacing:.3px;font-size:13px}.arw-textarea{width:100%;min-height:200px;background:#0b0e16;color:var(--arw-text);border:1px solid var(--arw-border);border-radius:var(--arw-radius-sm);padding:14px 16px;outline:none;resize:vertical;transition:box-shadow .2s ease,border-color .2s ease}.arw-textarea:focus{border-color:var(--arw-accent);box-shadow:var(--arw-focus)}.arw-controls{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}.arw-select-wrap{flex:1 1 240px}.arw-select{width:100%;background:#0b0e16;color:var(--arw-text);border:1px solid var(--arw-border);border-radius:var(--arw-radius-sm);padding:12px 14px;outline:none;transition:box-shadow .2s ease,border-color .2s ease}.arw-select:focus{border-color:var(--arw-accent-2);box-shadow:var(--arw-focus)}.arw-btn{appearance:none;border:1px solid var(--arw-border);background:#0d1018;color:var(--arw-text);padding:12px 16px;border-radius:14px;cursor:pointer;font-weight:600;display:inline-flex;align-items:center;gap:8px;transition:transform .06s ease,border-color .2s ease,background .2s ease,opacity .2s ease}.arw-btn:hover{transform:translateY(-1px);border-color:#2d3550}.arw-btn:disabled{opacity:.5;cursor:not-allowed}.arw-btn-primary{background:linear-gradient(90deg,#233055,#1a2441);border-color:#2a3a63}.arw-btn-primary:hover{background:linear-gradient(90deg,#2a3a63,#213054)}.arw-btn-ghost{background:#0b0e16}.arw-btn-active{outline:2px dashed var(--arw-accent);outline-offset:2px}.arw-loader{display:none;margin-top:14px;gap:10px;align-items:center;padding:10px 12px;background:#0b0f19;border:1px dashed #25314b;border-radius:var(--arw-radius-sm);color:var(--arw-muted)}.arw-spinner{width:18px;height:18px;border:2px solid #2a3550;border-top-color:var(--arw-accent);border-radius:50%;display:inline-block;animation:arw-spin 800ms linear infinite}@keyframes arw-spin{to{transform:rotate(360deg)}}.arw-loader-text{font-size:13px}.arw-message{display:none;margin-top:12px;padding:10px 12px;background:#0b0f19;border:1px solid #2a3249;border-radius:var(--arw-radius-sm);font-size:14px;color:var(--arw-text)}.arw-message-success{border-color:rgb(31 191 117 / .45);color:#d8ffef}.arw-message-error{border-color:rgb(255 92 119 / .45);color:#ffd8de}.arw-result{min-height:160px;background:#0b0e16;color:var(--arw-text);border:1px solid var(--arw-border);border-radius:var(--arw-radius-sm);padding:14px 16px;white-space:pre-wrap}.arw-result[contenteditable="true"]{outline:none;box-shadow:var(--arw-focus);border-color:var(--arw-accent)}.arw-stats{display:flex;gap:16px;flex-wrap:wrap;color:var(--arw-muted);font-size:13px;margin-top:8px}.arw-stat strong{color:var(--arw-text)}.arw-actions{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}.arw-footer{margin-top:16px;border-top:1px solid var(--arw-border);padding-top:12px}.arw-note{color:var(--arw-muted);font-size:13px;margin:0}@media (max-width:640px){.arw-btn{width:100%;justify-content:center}.arw-controls{align-items:stretch}}