:root{
    --navy:#102a43;--blue:#1d4ed8;--blue2:#2563eb;--light:#f4f7fb;--white:#fff;
    --text:#1f2937;--muted:#64748b;--line:#dbe3ee;--danger:#b91c1c;--success:#15803d;
    --warning:#a16207;--shadow:0 10px 28px rgba(15,23,42,.08);--radius:14px
}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,Segoe UI,Arial,sans-serif;color:var(--text);background:var(--light)}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.app-shell{min-height:100vh;display:flex}.sidebar{width:260px;background:linear-gradient(180deg,#0f2740,#173b5e);color:#fff;position:fixed;left:0;top:0;bottom:0;padding:22px 16px;display:flex;flex-direction:column;z-index:50}.brand-block{display:flex;align-items:center;gap:12px;padding:4px 8px 22px;border-bottom:1px solid rgba(255,255,255,.14)}.brand-block strong{display:block;font-size:15px;letter-spacing:.3px}.brand-block small{display:block;color:#b9c9d9;margin-top:4px;font-size:11px}.brand-mark{width:46px;height:46px;border-radius:13px;background:#f59e0b;color:#102a43;display:grid;place-items:center;font-weight:900;box-shadow:0 7px 20px rgba(245,158,11,.25)}.brand-mark.large{width:64px;height:64px;margin:0 auto 14px;font-size:20px}.side-nav{display:flex;flex-direction:column;gap:6px;margin-top:20px}.side-nav a{padding:12px 14px;border-radius:10px;color:#d7e3ef;font-size:14px}.side-nav a:hover,.side-nav a.active{background:rgba(255,255,255,.12);color:#fff}.sidebar-footer{margin-top:auto;border-top:1px solid rgba(255,255,255,.14);padding:18px 8px 2px;display:flex;justify-content:space-between;font-size:13px}.sidebar-footer a{color:#fbbf24}.main-area{margin-left:260px;min-width:0;flex:1;display:flex;flex-direction:column}.topbar{background:#fff;border-bottom:1px solid var(--line);padding:19px 28px;display:flex;align-items:center;gap:15px;position:sticky;top:0;z-index:30}.topbar h1{margin:0;font-size:22px}.topbar p{margin:5px 0 0;color:var(--muted);font-size:12px}.menu-button{display:none;border:0;background:#eef3f8;border-radius:9px;padding:8px 10px;font-size:18px}.content-wrap{padding:24px 28px;flex:1}.page-footer{padding:16px 28px;text-align:center;color:var(--muted);font-size:12px}.card{background:#fff;border:1px solid #e5ebf2;border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}.narrow-card{max-width:900px;margin:0 auto}.small-card{max-width:620px}.card-header{display:flex;align-items:flex-start;justify-content:space-between;gap:15px;margin-bottom:20px}.card-header h2{margin:0;font-size:18px}.card-header p{margin:5px 0 0;color:var(--muted);font-size:13px}.grid{display:grid;gap:20px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3-1{grid-template-columns:minmax(0,3fr) minmax(260px,1fr)}.mt-20{margin-top:20px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.form-group{display:flex;flex-direction:column;gap:7px;margin-bottom:15px}.form-grid .form-group{margin-bottom:0}.span-2{grid-column:span 2}.form-group label{font-weight:650;font-size:13px}.form-group input,.form-group select,.form-group textarea,.filter-bar input,.filter-bar select{width:100%;border:1px solid #cbd5e1;border-radius:9px;padding:11px 12px;background:#fff;color:var(--text);outline:none}.form-group input:focus,.form-group select:focus,.form-group textarea:focus,.filter-bar input:focus,.filter-bar select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,235,.1)}.form-group small{color:var(--muted);font-size:11px}.form-actions{display:flex;gap:10px;align-items:center;margin-top:4px}.checkbox-row label{font-weight:500;display:flex;align-items:center;gap:8px}.checkbox-row input{width:auto}.btn{border:1px solid transparent;border-radius:9px;padding:10px 15px;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;cursor:pointer;white-space:nowrap}.btn-primary{background:var(--blue2);color:#fff}.btn-dark{background:var(--navy);color:#fff}.btn-light{background:#f1f5f9;border-color:#d7e0ea;color:#334155}.btn-outline{border-color:#94a3b8;background:#fff;color:#334155}.btn-success{background:#15803d;color:#fff}.btn-danger{background:#b91c1c;color:#fff}.btn-block{width:100%}.alert{padding:12px 14px;border-radius:10px;margin-bottom:18px;font-size:13px}.alert-success{background:#ecfdf5;color:#166534;border:1px solid #bbf7d0}.alert-danger{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}.alert-warning{background:#fffbeb;color:#92400e;border:1px solid #fde68a}.table-responsive{overflow:auto;border:1px solid var(--line);border-radius:10px}table{width:100%;border-collapse:collapse;min-width:820px}th,td{padding:11px 10px;border-bottom:1px solid #e7edf4;text-align:left;font-size:12px;vertical-align:middle}th{background:#f8fafc;color:#475569;font-size:11px;text-transform:uppercase;letter-spacing:.04em}tbody tr:hover{background:#fafcff}tfoot th{background:#edf2f7;color:#1e293b}.num{text-align:right;font-variant-numeric:tabular-nums}.strong{font-weight:800}.text-center{text-align:center}.muted{color:var(--muted)}.block{display:block;margin-top:4px;color:var(--muted)}.badge{display:inline-block;border-radius:20px;padding:4px 8px;font-size:10px;font-weight:800}.badge-sale{background:#dbeafe;color:#1d4ed8}.badge-payment{background:#dcfce7;color:#15803d}.badge-adjustment{background:#fef3c7;color:#a16207}.status{padding:4px 8px;border-radius:20px;font-size:10px;font-weight:800}.status.active{background:#dcfce7;color:#166534}.status.inactive{background:#fee2e2;color:#991b1b}.actions-cell{white-space:nowrap}.table-link,.link-button{color:#1d4ed8;font-weight:700;font-size:12px;margin-right:8px}.link-button{background:none;border:0;padding:0;cursor:pointer}.link-button.danger{color:#b91c1c}.inline-form{display:inline}.filter-bar{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:18px}.filter-bar input,.filter-bar select{width:auto;min-width:180px;padding:9px 11px}.filter-wide select:first-child{min-width:260px}.empty-state{text-align:center;padding:44px 20px;color:var(--muted)}.empty-state h3{color:var(--text);margin:0 0 8px}.empty-state.compact{padding:25px}.summary-card h2{margin-top:0}.formula-box{border:1px solid var(--line);border-radius:10px;padding:13px;margin-bottom:10px}.formula-box span{display:block;color:var(--muted);font-size:11px}.formula-box strong{display:block;margin-top:4px;font-size:14px}.balance-preview{margin-top:3px;font-size:12px;color:#475569}.stats-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}.stat-card{background:#fff;border:1px solid #e5ebf2;border-radius:13px;padding:18px;box-shadow:var(--shadow)}.stat-card span{display:block;color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.04em}.stat-card strong{display:block;font-size:20px;margin:8px 0 4px}.stat-card small{color:#64748b}.stat-card.important{border-color:#fca5a5;background:#fffafa}.monthly-list{display:flex;flex-direction:column;gap:8px}.monthly-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;padding:11px;border:1px solid var(--line);border-radius:9px;font-size:12px}.quick-actions{display:flex;gap:10px;margin-top:18px}.ledger-head{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:16px;background:#f8fafc;border:1px solid var(--line);border-radius:10px;margin:18px 0}.ledger-head h3{margin:0}.ledger-head p{margin:5px 0;color:var(--muted)}.export-actions{display:flex;gap:8px}.ledger-summary{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;margin-bottom:16px}.ledger-summary div{border:1px solid var(--line);border-radius:9px;padding:11px;background:#fff}.ledger-summary span{display:block;color:var(--muted);font-size:10px;text-transform:uppercase}.ledger-summary strong{display:block;margin-top:5px;font-size:13px}.ledger-summary .important{background:#fff7ed;border-color:#fdba74}.opening-row{background:#f1f5f9}.pagination{display:flex;gap:6px;justify-content:center;margin-top:18px}.pagination a{padding:7px 10px;border:1px solid var(--line);border-radius:7px;background:#fff;font-size:12px}.pagination a.active{background:var(--blue);color:#fff;border-color:var(--blue)}.login-page{display:grid;place-items:center;min-height:100vh;padding:20px;background:radial-gradient(circle at top,#dbeafe,#f8fafc 55%)}.login-card{width:100%;max-width:430px;background:#fff;border:1px solid #dce5ef;border-radius:18px;padding:30px;box-shadow:0 20px 60px rgba(15,23,42,.15)}.login-brand{text-align:center;margin-bottom:24px}.login-brand h1{margin:0;font-size:22px}.login-brand p{margin:6px 0;color:var(--muted)}.login-contact{text-align:center;color:var(--muted);font-size:11px;line-height:1.7;margin-top:20px;border-top:1px solid var(--line);padding-top:16px}
@media(max-width:1150px){.stats-grid{grid-template-columns:repeat(3,1fr)}.ledger-summary{grid-template-columns:repeat(3,1fr)}}
@media(max-width:900px){.sidebar{transform:translateX(-100%);transition:.25s}.sidebar.open{transform:translateX(0)}.main-area{margin-left:0}.menu-button{display:block}.grid-3-1,.grid-2{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.ledger-summary{grid-template-columns:repeat(2,1fr)}.content-wrap{padding:18px}.topbar{padding:15px 18px}.ledger-head{align-items:flex-start;flex-direction:column}}
@media(max-width:600px){.form-grid{grid-template-columns:1fr}.span-2{grid-column:span 1}.stats-grid,.ledger-summary{grid-template-columns:1fr}.card{padding:16px}.card-header{flex-direction:column}.filter-bar>*{width:100%!important}.export-actions{flex-wrap:wrap}.monthly-row{grid-template-columns:1fr}.topbar h1{font-size:18px}}