:root{--bg:#0f1115;--panel:#171a21;--border:#262b36;--text:#e8eaf0;--muted:#8b91a3;--accent:#5b8cff;--danger:#ff6b6b;--income:#35c26b}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.shell{min-height:100vh;flex-direction:column}.nav,.shell{display:flex}.nav{align-items:center;gap:1.5rem;padding:1rem 1.5rem;border-bottom:1px solid var(--border)}.link-btn,.nav a{color:var(--muted);text-decoration:none;background:none;border:none;font-size:1rem;cursor:pointer}.brand,.link-btn:hover,.nav a:hover{color:var(--text)}.brand{font-weight:600;margin-right:auto}.content{padding:2rem;max-width:1000px;width:100%;margin:0 auto}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:1.25rem 1.5rem;margin-bottom:1.25rem}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));grid-gap:1rem;gap:1rem}table{width:100%;border-collapse:collapse}td,th{text-align:left;padding:.5rem .75rem;border-bottom:1px solid var(--border);font-size:.9rem}th{color:var(--muted);font-weight:500}.amount-out{color:var(--danger)}.amount-in{color:var(--income)}button.primary,input,select{font-size:1rem;padding:.5rem .75rem;border-radius:8px;border:1px solid var(--border);background:#10131a;color:var(--text)}button.primary{background:var(--accent);border:none;color:#fff;cursor:pointer}button.primary:disabled{opacity:.6;cursor:default}.login-box{max-width:360px;margin:4rem auto;display:flex;flex-direction:column;gap:.75rem}.error{color:var(--danger);font-size:.9rem}