*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#0f1117;--sidebar:#161822;--card:#1a1d2e;--card2:#212435;--text:#e4e6eb;--text2:#8b8fa3;--accent:#6c5ce7;--green:#00b894;--red:#e17055;--border:#2d3148;--input:#1e2035}
body{font-family:'Segoe UI',Tahoma,sans-serif;background:var(--bg);color:var(--text);display:flex;min-height:100vh}
a{color:var(--accent)}

/* Login */
.login-screen{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:var(--bg);z-index:1000}
.login-box{background:var(--card);padding:3rem;border-radius:16px;text-align:center;width:360px;box-shadow:0 8px 32px rgba(0,0,0,.4)}
.login-box h1{font-size:1.8rem;margin-bottom:.5rem;color:var(--accent)}
.login-box p{color:var(--text2);margin-bottom:1.5rem}
.login-box input{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:8px;background:var(--input);color:var(--text);font-size:1rem;margin-bottom:1rem}
.login-box button{width:100%;padding:12px;border:none;border-radius:8px;background:var(--accent);color:#fff;font-size:1rem;cursor:pointer;font-weight:600}
.login-box button:hover{opacity:.9}
.error{color:var(--red);margin-top:.5rem;font-size:.9rem}

/* Sidebar */
#sidebar{width:260px;background:var(--sidebar);padding:1rem 0;display:flex;flex-direction:column;position:fixed;height:100vh;z-index:100;border-right:1px solid var(--border)}
.sidebar-header{padding:1rem 1.5rem;border-bottom:1px solid var(--border)}
.sidebar-header h2{font-size:1.2rem;color:var(--accent)}
#sidebar ul{list-style:none;flex:1;padding:1rem 0}
#sidebar li{padding:12px 24px;cursor:pointer;display:flex;align-items:center;gap:12px;color:var(--text2);transition:.2s;border-left:3px solid transparent}
#sidebar li:hover,#sidebar li.active{background:rgba(108,92,231,.1);color:var(--accent);border-left-color:var(--accent)}
.sidebar-footer{padding:1rem 1.5rem;border-top:1px solid var(--border);cursor:pointer;color:var(--text2);display:flex;align-items:center;gap:8px}
.sidebar-footer:hover{color:var(--red)}

#mobileToggle{display:none;position:fixed;top:1rem;left:1rem;z-index:200;background:var(--accent);color:#fff;border:none;width:40px;height:40px;border-radius:8px;cursor:pointer;font-size:1.2rem;align-items:center;justify-content:center}

main{margin-left:260px;flex:1;padding:2rem;width:calc(100% - 260px)}

/* Cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem;margin-bottom:2rem}
.card{background:var(--card);border-radius:12px;padding:1.5rem;border:1px solid var(--border)}
.card h3{font-size:.85rem;color:var(--text2);margin-bottom:.5rem;text-transform:uppercase;letter-spacing:.5px}
.card .value{font-size:1.8rem;font-weight:700}
.card .value.green{color:var(--green)}
.card .value.red{color:var(--red)}
.card .value.accent{color:var(--accent)}

/* Charts */
.charts{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:2rem}
.chart-box{background:var(--card);border-radius:12px;padding:1.5rem;border:1px solid var(--border)}
.chart-box h3{margin-bottom:1rem;font-size:1rem}
.chart-box canvas{max-height:300px}

/* Table */
.table-wrap{background:var(--card);border-radius:12px;border:1px solid var(--border);overflow-x:auto}
table{width:100%;border-collapse:collapse}
th{background:var(--card2);padding:12px 16px;text-align:left;font-size:.85rem;color:var(--text2);text-transform:uppercase;letter-spacing:.5px;position:sticky;top:0}
td{padding:10px 16px;border-top:1px solid var(--border);font-size:.9rem}
tr:hover{background:rgba(108,92,231,.05)}
.type-income{color:var(--green);font-weight:600}
.type-expense{color:var(--red);font-weight:600}
.badge{padding:3px 10px;border-radius:20px;font-size:.8rem;font-weight:500}
.badge-green{background:rgba(0,184,148,.15);color:var(--green)}
.badge-red{background:rgba(225,112,85,.15);color:var(--red)}

/* Filters */
.filters{display:flex;gap:.75rem;margin-bottom:1rem;flex-wrap:wrap;align-items:center}
.filters select,.filters input{padding:8px 12px;border:1px solid var(--border);border-radius:8px;background:var(--input);color:var(--text);font-size:.9rem}
.filters input[type=text]{min-width:200px}

/* Form */
.form-card{background:var(--card);border-radius:12px;padding:2rem;border:1px solid var(--border);max-width:600px}
.form-group{margin-bottom:1.25rem}
.form-group label{display:block;margin-bottom:.4rem;color:var(--text2);font-size:.9rem}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:8px;background:var(--input);color:var(--text);font-size:.95rem}
.form-group textarea{resize:vertical;min-height:60px}
.btn{padding:10px 24px;border:none;border-radius:8px;cursor:pointer;font-size:.95rem;font-weight:600;transition:.2s}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{opacity:.85}
.btn-danger{background:var(--red);color:#fff}
.btn-sm{padding:6px 12px;font-size:.8rem}
.btn-export{background:var(--card2);color:var(--text);border:1px solid var(--border)}
.btn-export:hover{background:var(--accent);color:#fff}

.page-title{font-size:1.5rem;font-weight:700;margin-bottom:1.5rem;display:flex;align-items:center;gap:.5rem}

/* Monthly */
.month-card{background:var(--card);border-radius:12px;padding:1.5rem;border:1px solid var(--border);margin-bottom:1rem}
.month-card h3{font-size:1.1rem;margin-bottom:1rem;color:var(--accent)}
.month-stats{display:flex;gap:2rem;margin-bottom:1rem;flex-wrap:wrap}
.month-stat{text-align:center}
.month-stat .label{font-size:.8rem;color:var(--text2)}
.month-stat .val{font-size:1.3rem;font-weight:700}

/* Loans */
.loan-item{background:var(--card);border-radius:12px;padding:1.25rem;border:1px solid var(--border);margin-bottom:.75rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.5rem}
.loan-info{flex:1}
.loan-amount{font-size:1.2rem;font-weight:700}

/* People */
.person-card{background:var(--card);border-radius:12px;padding:1.5rem;border:1px solid var(--border);margin-bottom:1rem}
.person-card h3{font-size:1.1rem;margin-bottom:.75rem}

/* Responsive */
@media(max-width:768px){
  #sidebar{transform:translateX(-100%);transition:.3s}
  #sidebar.open{transform:translateX(0)}
  #mobileToggle{display:flex}
  main{margin-left:0;width:100%;padding:1rem;padding-top:4rem}
  .charts{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){
  .cards{grid-template-columns:1fr}
}

/* Settings */
.setting-section{background:var(--card);border-radius:12px;padding:1.5rem;border:1px solid var(--border);margin-bottom:1rem}
.setting-section h3{margin-bottom:1rem}
.cat-list{display:flex;flex-wrap:wrap;gap:.5rem}
.cat-tag{background:var(--card2);padding:6px 14px;border-radius:20px;font-size:.85rem;border:1px solid var(--border)}
.add-cat-form{display:flex;gap:.5rem;margin-top:1rem}
.add-cat-form input{flex:1;padding:8px 12px;border:1px solid var(--border);border-radius:8px;background:var(--input);color:var(--text)}

.running-balance{font-weight:600}

/* Toast */
.toast{position:fixed;bottom:2rem;right:2rem;background:var(--green);color:#fff;padding:12px 24px;border-radius:8px;font-weight:600;z-index:9999;animation:fadeIn .3s}
@keyframes fadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}