:root{--primary-color:#4f46e5;--bg:#f7f7fb;--surface:#fff;--border:#e2e2ea;--text:#1f2230;--text-muted:#6b6f80;--danger:#dc2626;--success:#16a34a;--warning:#d97706;--radius:8px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}a{color:var(--primary-color)}.app-shell{display:flex;min-height:100vh}.sidebar{width:220px;background:var(--surface);border-right:1px solid var(--border);padding:1.25rem 1rem;flex-shrink:0}.sidebar .brand{font-weight:700;font-size:1.1rem;margin-bottom:1.5rem;color:var(--primary-color)}.sidebar nav a{display:block;padding:.5rem .6rem;border-radius:var(--radius);color:var(--text);text-decoration:none;margin-bottom:.15rem;font-size:.92rem}.sidebar nav a.active,.sidebar nav a:hover{background:color-mix(in srgb,var(--primary-color) 12%,transparent);color:var(--primary-color)}.main{flex:1 1;padding:1.5rem 2rem;max-width:1100px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem;margin-bottom:1rem}.grid{display:grid;grid-gap:1rem;gap:1rem}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}@media (max-width:720px){.grid-2,.grid-3{grid-template-columns:1fr}}.btn,button{background:var(--primary-color);color:#fff;border:none;border-radius:var(--radius);padding:.5rem .9rem;font-size:.9rem;cursor:pointer}.btn.secondary,button.secondary{background:transparent;color:var(--text);border:1px solid var(--border)}button.danger{background:var(--danger)}button:disabled{opacity:.5;cursor:not-allowed}input,select,textarea{width:100%;padding:.5rem .6rem;border:1px solid var(--border);border-radius:var(--radius);font-size:.9rem;background:var(--surface);color:var(--text)}label{display:block;font-size:.82rem;color:var(--text-muted);margin-bottom:.25rem;margin-top:.75rem}table{width:100%;border-collapse:collapse;font-size:.88rem}td,th{text-align:left;padding:.5rem .6rem;border-bottom:1px solid var(--border)}th{color:var(--text-muted)}.badge,th{font-weight:600}.badge{display:inline-block;padding:.15rem .55rem;border-radius:999px;font-size:.75rem;background:#eee;color:#444}.badge.approved,.badge.paid{background:#dcfce7;color:var(--success)}.badge.failed,.badge.rejected{background:#fee2e2;color:var(--danger)}.badge.open,.badge.partial,.badge.pending{background:#fef3c7;color:var(--warning)}.error-text{color:var(--danger);font-size:.85rem;margin-top:.5rem}.muted{color:var(--text-muted);font-size:.85rem}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.auth-card{width:360px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:2rem}.auth-card h1{font-size:1.2rem;margin-bottom:1.25rem;color:var(--primary-color)}