:root{--brand-primary:#2563eb;--text:#111827;--text-muted:#6b7280;--border:#e5e7eb;--surface:#ffffff;--danger:#dc2626}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,sans-serif;color:var(--text);background:#f9fafb}a{color:var(--brand-primary)}.app-shell{min-height:100vh;display:flex;flex-direction:column}.app-header{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;background:var(--surface);border-bottom:1px solid var(--border)}.app-header__brand{font-weight:600;text-decoration:none;color:var(--text)}.app-main{flex:1 1;max-width:960px;width:100%;margin:0 auto;padding:24px 20px}.page-title{margin:0 0 16px;font-size:1.5rem}.btn{display:inline-flex;align-items:center;justify-content:center;padding:8px 16px;border-radius:8px;border:1px solid transparent;font-size:.9375rem;cursor:pointer;text-decoration:none}.btn--primary{background:var(--brand-primary);color:#fff}.btn--secondary{background:var(--surface);border-color:var(--border);color:var(--text)}.btn--text{background:transparent;color:var(--text-muted)}.field{display:block;margin-bottom:16px}.field__label{display:block;margin-bottom:6px;font-weight:500}.field__input{width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:8px;font-size:1rem}.process-list{list-style:none;padding:0;margin:0}.process-list__item{padding:12px 16px;background:var(--surface);border:1px solid var(--border);border-radius:8px;margin-bottom:8px}.process-list__item a{text-decoration:none;color:inherit;display:block}.empty-state{text-align:center;padding:48px 16px;background:var(--surface);border:1px dashed var(--border);border-radius:12px}.empty-state__title{margin:0 0 8px}.empty-state__desc{margin:0 0 16px;color:var(--text-muted)}.node-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}.alert{padding:12px 16px;border-radius:8px;margin-bottom:16px}.alert--error{background:#fef2f2;color:var(--danger);border:1px solid #fecaca}.text-muted{color:var(--text-muted)}.signin-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.signin-card{width:100%;max-width:400px;padding:32px;background:var(--surface);border:1px solid var(--border);border-radius:12px}