: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;--jwt-header-accent:#2f6feb;--jwt-payload-accent:#7e14ff;--jwt-signature-accent:#6b7280;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}: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;--jwt-header-accent:#5b9dff;--jwt-payload-accent:#c084fc;--jwt-signature-accent:#9aa1ac;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;font-family:system-ui,Segoe UI,Roboto,sans-serif}#root{max-width:1000px;margin:0 auto;padding:20px}h1{margin:0 0 4px;font-size:26px}.app-description{color:var(--text-muted);margin:0 0 20px;font-size:14px}.site-header{align-items:center;gap:10px;margin-bottom:12px;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)}.toggle-btn.active{background:var(--accent);color:var(--accent-contrast);border-color:var(--accent)}.icon-btn{padding:6px 10px}.btn:disabled{opacity:.5;cursor:not-allowed}.btn:disabled:hover{border-color:var(--border)}.toolbar{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:16px;display:flex}.error-banner{background:var(--error-bg);border:1px solid var(--error-border);color:var(--error-text);border-radius:8px;margin-bottom:16px;padding:10px 14px;font-size:13px}.panels{flex-direction:column;gap:16px;display:flex}.panel{flex-direction:column;gap:6px;display:flex}.panel--header{border-left:3px solid var(--jwt-header-accent);padding-left:12px}.panel--payload{border-left:3px solid var(--jwt-payload-accent);padding-left:12px}.panel--signature{border-left:3px solid var(--jwt-signature-accent);padding-left:12px}.panel__label{color:var(--text-muted);justify-content:space-between;align-items:center;font-size:13px;font-weight:600;display:flex}.panel textarea,.panel pre{resize:vertical;background:var(--surface);width:100%;min-height:120px;color:var(--text);border:1px solid var(--border);border-radius:8px;margin:0;padding:12px;font-family:ui-monospace,Consolas,monospace;font-size:13px;line-height:1.5;overflow:auto}.panel textarea:focus{border-color:var(--accent);outline:none}.panel-placeholder{color:var(--text-muted);background:var(--surface);border:1px dashed var(--border);text-align:center;border-radius:8px;padding:24px 12px;font-size:13px}.claims-summary{flex-wrap:wrap;gap:8px;margin-bottom:8px;display:flex}.claim-chip{background:var(--surface);border:1px solid var(--border);color:var(--text-muted);border-radius:999px;align-items:baseline;gap:4px;padding:4px 10px;font-size:12px;display:inline-flex}.claim-chip strong{color:var(--text);font-weight:600}.claim-chip--expired{background:var(--error-bg);border-color:var(--error-border);color:var(--error-text)}.claim-chip--expired strong{color:var(--error-text)}.signature-note{color:var(--text-muted);margin:4px 0 0;font-size:12px}@media (width<=720px){.panel--header,.panel--payload,.panel--signature{padding-left:8px}}