:root{--bg: #f4f4f4;--surface: #ffffff;--ink: #111111;--muted: #6d6d6d;--line: #e2e2e2;--sidebar: #111111;--sidebar-text: #b8b8b8;--sidebar-active: #ffffff;--danger: #2b2b2b;--shadow: 0 10px 30px rgba(0, 0, 0, .06)}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{font-family:Segoe UI,Arial,sans-serif;color:var(--ink);background:var(--bg)}button,input,select{font:inherit}a{color:inherit;text-decoration:none}.app-shell{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--sidebar);color:var(--sidebar-text);display:flex;flex-direction:column;padding:24px 16px;flex-shrink:0}.brand{color:#fff;font-size:18px;letter-spacing:.08em;text-transform:uppercase;margin:0 12px 32px}.nav-section{font-size:11px;letter-spacing:.14em;text-transform:uppercase;margin:18px 12px 8px;color:#7a7a7a}.nav-section-btn{width:100%;display:flex;align-items:center;justify-content:space-between;gap:8px;background:transparent;border:none;color:#9a9a9a;padding:10px 12px;margin-top:8px;cursor:pointer;letter-spacing:.12em;text-transform:uppercase;font-size:11px;border-radius:6px}.nav-section-btn:hover{background:#1d1d1d;color:#fff}.nav-section-left{display:flex;align-items:center;gap:8px}.nav-chevron{transition:transform .16s ease}.nav-chevron.open{transform:rotate(90deg)}.nav-group{display:flex;flex-direction:column;gap:2px;margin-bottom:6px}.nav-link{display:flex;align-items:center;gap:8px;padding:9px 12px;border-radius:6px;color:var(--sidebar-text)}.nav-link:hover,.nav-link.active{background:#1d1d1d;color:var(--sidebar-active)}.sidebar-footer{margin-top:auto;padding:12px;border-top:1px solid #2a2a2a}.sidebar-user{font-size:13px;color:#fff;margin-bottom:10px}.content{flex:1;padding:32px 40px}.content:has(.presupuesto-page){padding:16px 20px;overflow:hidden;display:flex;flex-direction:column;min-height:0;height:100vh}.page-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px}.page-head-actions{display:flex;align-items:center;gap:10px}.page-head h1{margin:0;font-size:24px;font-weight:600}.page-head p{margin:6px 0 0;color:var(--muted);font-size:14px}.card{background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow)}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--line);font-size:14px}th{color:var(--muted);font-weight:500;background:#fafafa}tr:last-child td{border-bottom:none}.actions{display:flex;gap:8px}.btn{border:1px solid #111;background:#111;color:#fff;padding:8px 14px;border-radius:6px;cursor:pointer}.btn:hover{background:#2a2a2a}.btn.ghost{background:#fff;color:#111}.btn.ghost:hover{background:#f3f3f3}.btn.small{padding:5px 10px;font-size:13px}.btn:disabled{opacity:.5;cursor:not-allowed}.login-wrap{min-height:100vh;display:grid;place-items:center;background:#f4f4f4}.login-card{width:360px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:36px 32px;box-shadow:var(--shadow)}.login-card h1{margin:0 0 6px;font-size:26px}.login-card p{margin:0 0 24px;color:var(--muted)}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.field label{font-size:13px;color:var(--muted)}.field input,.field select{border:1px solid #d4d4d4;border-radius:6px;padding:10px 12px;background:#fff}.field input:focus,.field select:focus{outline:2px solid #111;outline-offset:1px}.error{color:#3a3a3a;background:#f1f1f1;border:1px solid #ddd;padding:8px 10px;border-radius:6px;font-size:13px;margin-bottom:12px}.empty{padding:32px 16px;text-align:center;color:var(--muted)}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000059;display:grid;place-items:center;z-index:20}.modal{width:min(480px,calc(100vw - 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