:root{--bg:#0f1117;--surface:#1a1d27;--border:#2a2d3a;--text:#e4e4e7;--text-muted:#71717a;--primary:#6366f1;--primary-hover:#818cf8;--success:#22c55e;--warning:#f59e0b;--danger:#ef4444}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5}.app{min-height:100vh;display:flex}.sidebar{background:var(--surface);border-right:1px solid var(--border);flex-shrink:0;width:240px;padding:1.5rem 0}.sidebar h1{border-bottom:1px solid var(--border);margin-bottom:1rem;padding:0 1.5rem 1.5rem;font-size:1.1rem}.sidebar nav a{color:var(--text-muted);padding:.6rem 1.5rem;font-size:.9rem;text-decoration:none;transition:all .15s;display:block}.sidebar nav a:hover,.sidebar nav a.active{color:var(--text);border-right:2px solid var(--primary);background:#6366f11a}.main{flex:1;padding:2rem;overflow-x:auto}.page-title{margin-bottom:1.5rem;font-size:1.5rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:8px;margin-bottom:1.5rem;padding:1.5rem}.card h2{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:1rem;font-size:1rem}.filters{flex-wrap:wrap;align-items:end;gap:1rem;margin-bottom:1.5rem;display:flex}.filters label{color:var(--text-muted);flex-direction:column;gap:.3rem;font-size:.85rem;display:flex}.filters input,.filters select{background:var(--bg);border:1px solid var(--border);color:var(--text);border-radius:6px;padding:.5rem .75rem;font-size:.9rem}button{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:.5rem 1rem;font-size:.9rem;transition:background .15s}button:hover{background:var(--primary-hover)}button:disabled{opacity:.5;cursor:not-allowed}button.btn-sm{padding:.3rem .6rem;font-size:.8rem}button.btn-success{background:var(--success)}button.btn-danger{background:var(--danger)}table{border-collapse:collapse;width:100%;font-size:.9rem}th{text-align:left;border-bottom:1px solid var(--border);color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;padding:.75rem;font-size:.8rem;font-weight:500}td{border-bottom:1px solid var(--border);padding:.75rem}tr:hover td{background:#ffffff05}.badge{border-radius:4px;padding:.2rem .5rem;font-size:.75rem;font-weight:500;display:inline-block}.badge-completed{color:var(--success);background:#22c55e26}.badge-pending{color:var(--warning);background:#f59e0b26}.badge-paid{color:var(--success);background:#22c55e26}.badge-unpaid,.badge-overdue{color:var(--danger);background:#ef444426}.amount-positive{color:var(--success)}.amount-negative{color:var(--danger)}.loading{text-align:center;color:var(--text-muted);padding:2rem}.error{border:1px solid var(--danger);color:var(--danger);background:#ef44441a;border-radius:6px;margin-bottom:1rem;padding:1rem}.stats{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-bottom:1.5rem;display:grid}.stat{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:1.25rem}.stat-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.8rem}.stat-value{margin-top:.25rem;font-size:1.5rem;font-weight:600}.modal-overlay{z-index:100;background:#0009;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal{background:var(--surface);border:1px solid var(--border);border-radius:8px;min-width:400px;max-width:600px;padding:2rem}.modal h3,.modal .form-group{margin-bottom:1rem}.modal .form-group label{color:var(--text-muted);margin-bottom:.3rem;font-size:.85rem;display:block}.modal .form-group input,.modal .form-group select{background:var(--bg);border:1px solid var(--border);width:100%;color:var(--text);border-radius:6px;padding:.5rem .75rem}.modal-actions{justify-content:flex-end;gap:.75rem;margin-top:1.5rem;display:flex}.login-page{background:var(--bg);justify-content:center;align-items:center;min-height:100vh;display:flex}.login-card{background:var(--surface);border:1px solid var(--border);text-align:center;border-radius:12px;width:100%;max-width:400px;padding:3rem}.login-card h1{margin-bottom:.5rem;font-size:1.5rem}.login-card p{color:var(--text-muted);margin-bottom:2rem}.login-card a{text-decoration:none}.sidebar{flex-direction:column;display:flex}.sidebar nav{flex:1}.sidebar-user{border-top:1px solid var(--border);padding:1rem 1.5rem}.user-name{font-size:.9rem;font-weight:500}.user-email{color:var(--text-muted);margin-bottom:.5rem;font-size:.8rem}
