:root{--color-primary:#1f4e79;--color-primary-dark:#163a5c;--color-present:#2f9e44;--color-present-dark:#268039;--color-absent:#e03131;--color-absent-dark:#b82525;--color-bg:#f5f6f8;--color-card:#fff;--color-text:#24292f;--color-muted:#6b7280;--color-border:#e2e5e9;--radius:10px}*{box-sizing:border-box}body{background:var(--color-bg);color:var(--color-text);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}h1,h2,h3{color:var(--color-primary-dark);margin-top:0}.page-center{justify-content:center;align-items:center;min-height:100vh;padding:1rem;display:flex}.card{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius);padding:1.5rem}.auth-card{flex-direction:column;gap:.75rem;width:100%;max-width:320px;display:flex}label{flex-direction:column;gap:.25rem;font-size:.9rem;display:flex}input{border:1px solid var(--color-border);border-radius:6px;padding:.5rem;font-size:1rem}.btn{cursor:pointer;border:none;border-radius:6px;padding:.6rem 1rem;font-size:1rem}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark)}.error-text{color:var(--color-absent);font-size:.9rem}.module-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1rem;max-width:900px;margin:2rem auto;padding:0 1rem;display:grid}.module-tile{color:inherit;text-decoration:none;transition:box-shadow .15s;display:block}.module-tile:hover{box-shadow:0 2px 8px #0000001a}.badge-readonly{color:var(--color-muted);vertical-align:middle;background:#6b728029;border-radius:999px;padding:.15rem .5rem;font-size:.7rem;font-weight:600;display:inline-block}