:root{--bg:#0f1115;--surface:#171a21;--surface-2:#1e222b;--border:#2a2f3a;--text:#e7e9ee;--muted:#9aa3b2;--accent:#e2502f;--accent-2:#f0824f;--green:#2ea66b;--amber:#d99a2b;--red:#d8503a;--radius:10px}*{box-sizing:border-box}body,html{padding:0;margin:0}body{background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:15px;line-height:1.5}a{color:inherit;text-decoration:none}h1{font-size:22px;margin:0 0 4px}h1,h2{font-weight:600}h2{font-size:17px;margin:0 0 12px}h3{font-size:15px;font-weight:600;margin:0}.muted{color:var(--muted)}.small{font-size:13px}.app{display:grid;grid-template-columns:230px 1fr;min-height:100vh}.sidebar{background:var(--surface);border-right:1px solid var(--border);padding:20px 14px;display:flex;flex-direction:column;gap:4px}.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 18px;font-weight:700;letter-spacing:.3px}.brand .dot{width:22px;height:22px;border-radius:6px;background:var(--accent);display:inline-block}.navlink{padding:9px 12px;border-radius:8px;color:var(--muted);font-weight:500;display:flex;gap:9px}.navlink.active,.navlink:hover{background:var(--surface-2);color:var(--text)}.main{padding:28px 32px;max-width:1200px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));grid-gap:14px;gap:14px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px}.kpi .label{color:var(--muted);font-size:13px}.kpi .value{font-size:26px;font-weight:600;margin-top:4px}.kpi .sub{color:var(--muted);font-size:12px;margin-top:2px}table{width:100%;border-collapse:collapse}td,th{text-align:left;padding:11px 12px;border-bottom:1px solid var(--border);font-size:14px}th{color:var(--muted);font-weight:500;font-size:12px;text-transform:uppercase;letter-spacing:.4px}tbody tr:hover{background:var(--surface-2)}.right{text-align:right}.badge{display:inline-block;padding:3px 9px;border-radius:999px;font-size:12px;font-weight:500;border:1px solid var(--border)}.badge.paid{color:#7be3a9;border-color:#2c5e44;background:#11271b}.badge.sent{color:#f0c869;border-color:#5e4f24;background:#271f0f}.badge.overdue{color:#f0937e;border-color:#5e342c;background:#27130f}.badge.draft{color:var(--muted)}.badge.historical{color:#9db4e0;border-color:#2c3a5e;background:#0f1627}.badge.cancelled{color:var(--muted);text-decoration:line-through}.btn{display:inline-flex;align-items:center;gap:7px;padding:9px 15px;border-radius:8px;border:1px solid var(--border);background:var(--surface-2);color:var(--text);font-weight:500;cursor:pointer;font-size:14px}.btn:hover{border-color:#3a4150}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.primary:hover{background:var(--accent-2)}.btn.sm{padding:6px 11px;font-size:13px}input,select,textarea{width:100%;padding:9px 11px;border-radius:8px;border:1px solid var(--border);background:var(--surface-2);color:var(--text);font-size:14px;font-family:inherit}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent)}label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}.field{margin-bottom:14px}.row{display:grid;grid-template-columns:1fr 1fr;grid-gap:14px;gap:14px}.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px}.center{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.login{width:100%;max-width:360px}.err{color:#f0937e}.err,.ok{font-size:13px;margin-top:8px}.ok,.pos{color:#7be3a9}.neg{color:#f0937e}