:root{--bg:#f5f6f8;--surface:#fff;--border:#d9dce1;--text:#1c1f24;--text-muted:#6b7280;--accent:#2f6feb;--accent-contrast:#fff;--error-bg:#fdeceb;--error-border:#e5534b;--error-text:#8a1f16;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;font-family:system-ui,Segoe UI,Roboto,sans-serif}:root[data-theme=dark]{--bg:#14161a;--surface:#1b1e24;--border:#2e333c;--text:#e6e8eb;--text-muted:#9aa1ac;--accent:#5b9dff;--accent-contrast:#0b1220;--error-bg:#3a1c1c;--error-border:#e5534b;--error-text:#ffb4ac;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0}.site-header{align-items:center;gap:10px;max-width:42rem;margin:0 auto;padding:20px 16px 0;display:flex}.site-header__brand{color:var(--accent);white-space:nowrap;font-size:15px;font-weight:700;text-decoration:none}.site-header__brand:hover{text-decoration:underline}.site-header__divider{color:var(--text-muted);font-weight:400}.site-header__title{color:var(--text-muted);white-space:nowrap;font-size:15px;font-weight:600}.toolbar-spacer{flex:1}.btn,.toggle-btn{border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;border-radius:6px;padding:6px 12px;font-size:13px}.btn:hover,.toggle-btn:hover{border-color:var(--accent)}.icon-btn{padding:6px 10px}.app{box-sizing:border-box;max-width:42rem;margin:0 auto;padding:24px 16px 48px}.tool-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:28px;box-shadow:0 10px 30px #00000014}.mode-toggle{gap:8px;margin-bottom:20px;display:inline-flex}.mode-btn{color:var(--text-muted)}.mode-btn--active{color:var(--accent-contrast);background:var(--accent);border-color:var(--accent)}.field-label{letter-spacing:.04em;text-transform:uppercase;color:var(--text-muted);margin-bottom:8px;font-size:12px;font-weight:600;display:block}.ua-input{box-sizing:border-box;border:1px solid var(--border);background:var(--bg);width:100%;color:var(--text);resize:vertical;border-radius:8px;padding:10px 12px;font-family:ui-monospace,Consolas,monospace;font-size:13px}.ua-input:read-only{opacity:.85}.ua-input:focus{border-color:var(--accent);outline:none}.copy-row{justify-content:flex-end;margin:12px 0 24px;display:flex}.btn--copied{color:#198754;border-color:#198754}.results-wrap{overflow-x:auto}.results-table{border-collapse:collapse;width:100%;font-size:14px}.results-table th,.results-table td{text-align:left;border-bottom:1px solid var(--border);padding:8px 4px}.results-table th{width:40%;color:var(--text-muted);font-weight:500}.results-table td{color:var(--text);font-family:ui-monospace,Consolas,monospace}.results-table tr:last-child th,.results-table tr:last-child td{border-bottom:none}.disclaimer{text-align:center;max-width:42rem;color:var(--text-muted);margin:20px auto 0;padding:0 16px;font-size:13px}