:root{color-scheme:light dark;--onyx: #1a1a1a;--flame: #ff5a1f;--ghost: #f5f5f4;--amber: #ffb020;--border: #e2e2e0}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:13px;color:var(--onyx);background:#fff}.pane{padding:12px;display:flex;flex-direction:column;gap:12px;height:100vh;overflow-y:auto}h1{font-size:15px;margin:0}h2{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:#777;margin:0 0 6px}label{display:block;font-size:11px;font-weight:600;color:#555;margin-bottom:3px}input,select,textarea{width:100%;padding:6px 8px;border:1px solid var(--border);border-radius:6px;font-size:13px;font-family:inherit}textarea{resize:vertical}.field{margin-bottom:10px}button.primary{background:var(--flame);color:#fff;border:none;border-radius:6px;padding:8px 14px;font-weight:600;cursor:pointer;font-size:13px}button.primary:disabled{opacity:.5;cursor:default}button.secondary{background:var(--ghost);border:1px solid var(--border);border-radius:6px;padding:8px 14px;cursor:pointer;font-size:13px}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);padding-bottom:8px}.tab{padding:6px 10px;border-radius:6px 6px 0 0;cursor:pointer;font-size:12px;font-weight:600;color:#777}.tab.active{background:var(--ghost);color:var(--onyx)}.email-preview{background:var(--ghost);border-radius:8px;padding:10px;font-size:12px}.email-preview .from{font-weight:600}.item-row{padding:8px;border:1px solid var(--border);border-radius:6px;cursor:pointer;margin-bottom:6px}.item-row.selected{border-color:var(--flame);background:#fff4ee}.item-row .subject{font-weight:600;font-size:12px}.item-row .meta{font-size:11px;color:#777}.banner{padding:8px 10px;border-radius:6px;font-size:12px}.banner.error{background:#fdecea;color:#b3261e}.banner.success{background:#e6f7ed;color:#1e7e42}.muted{color:#888;font-size:12px}