:root{
  --primary:#2563EB;
  --bg:#f6f8fc;
  --surface:#ffffff;
  --text:#0f172a;
  --muted:#64748b;
  --line:#e2e8f0;
  --success:#15803d;
  --danger:#b91c1c;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:var(--bg);color:var(--text)}
button{font:inherit}
.hidden{display:none!important}
.login-screen{min-height:100vh;display:grid;place-items:center;padding:24px}
.login-card{width:min(420px,100%);background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:28px;box-shadow:0 20px 60px rgba(15,23,42,.08)}
.brand-mark{width:54px;height:54px;border-radius:16px;background:var(--primary);display:grid;place-items:center;color:white;font-weight:900;font-size:20px}
.login-card h1{margin:18px 0 8px;font-size:30px}
.login-card p{color:var(--muted);line-height:1.6}
.primary-btn{border:0;border-radius:14px;background:var(--primary);color:white;font-weight:800;padding:13px 17px;cursor:pointer;width:100%;margin-top:14px}
.app-shell{min-height:100vh}
.sidebar{position:fixed;inset:0 auto 0 0;width:250px;background:#0f172a;color:white;padding:22px 16px;display:flex;flex-direction:column;z-index:20}
.side-brand{display:flex;gap:12px;align-items:center;padding:4px 8px 24px}
.side-logo{width:42px;height:42px;border-radius:13px;background:var(--primary);display:grid;place-items:center;font-weight:900}
.side-brand strong{display:block}.side-brand span{display:block;color:#94a3b8;font-size:12px;margin-top:2px}
.nav{display:grid;gap:6px}
.nav button{background:transparent;border:0;color:#cbd5e1;text-align:left;padding:12px 14px;border-radius:12px;font-weight:700;cursor:pointer}
.nav button:hover,.nav button.active{background:#1e293b;color:white}
.side-footer{margin-top:auto;border-top:1px solid #1e293b;padding:18px 8px 0}
.side-footer small{color:#94a3b8;display:block;margin-bottom:10px;overflow:hidden;text-overflow:ellipsis}
.logout-btn{background:transparent;border:1px solid #334155;color:#e2e8f0;border-radius:10px;padding:9px 12px;cursor:pointer;width:100%}
.main{margin-left:250px;min-height:100vh}
.topbar{height:72px;background:rgba(246,248,252,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 28px;position:sticky;top:0;z-index:10}
.topbar h1{font-size:22px;margin:0}
.top-actions{display:flex;gap:10px;align-items:center}
.icon-btn{border:1px solid var(--line);background:white;border-radius:11px;padding:9px 12px;cursor:pointer}
.status-pill{font-size:12px;font-weight:800;background:#e2e8f0;color:#475569;border-radius:999px;padding:7px 10px}
.status-pill.ok{background:#dcfce7;color:#166534}.status-pill.bad{background:#fee2e2;color:#991b1b}
.content{width:min(1100px,calc(100% - 40px));margin:0 auto;padding:28px 0 100px}
.hero-card{background:linear-gradient(135deg,#fff,#eef4ff);border:1px solid #dbeafe;border-radius:24px;padding:24px;display:flex;justify-content:space-between;gap:18px}
.eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:.13em;font-weight:900;color:var(--primary)}
.hero-card h2,.panel h3{margin:6px 0}.hero-card p{margin:0;color:var(--muted)}
.role-badge,.read-only,.chip{font-size:11px;font-weight:900;border-radius:999px;padding:7px 9px;background:#eff6ff;color:#1d4ed8;white-space:nowrap;height:max-content}
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:16px}
.metric-grid.compact{grid-template-columns:repeat(3,minmax(0,1fr))}
.metric-card{background:white;border:1px solid var(--line);border-radius:18px;padding:18px}
.metric-card span{font-size:12px;color:var(--muted);display:block}
.metric-card strong{font-size:24px;display:block;margin-top:7px}
.metric-card small{color:var(--muted)}
.panel{background:white;border:1px solid var(--line);border-radius:20px;padding:20px;margin-top:16px}
.panel-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
.progress{height:11px;background:#e2e8f0;border-radius:999px;overflow:hidden;margin-top:18px}.progress span{display:block;height:100%;background:var(--primary);border-radius:999px}
.progress-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;margin-top:9px}
.quick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:16px}
.quick-card{border:1px solid var(--line);background:white;border-radius:18px;padding:18px;text-align:left;cursor:pointer}.quick-card:hover{border-color:#bfdbfe;box-shadow:0 8px 26px rgba(37,99,235,.07)}
.quick-card strong,.quick-card small{display:block}.quick-card small{color:var(--muted);margin-top:4px}.quick-icon{font-size:26px;margin-bottom:12px;display:block}
.list{display:grid;margin-top:8px}
.list-row{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}.list-row:last-child{border-bottom:0}
.avatar{width:40px;height:40px;border-radius:12px;background:#eff6ff;color:#1d4ed8;display:grid;place-items:center;font-weight:900;flex:none}
.list-main{min-width:0;flex:1}.list-main strong,.list-main span{display:block}.list-main span{color:var(--muted);font-size:12px;margin-top:4px}
.cash-icon{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:20px;font-weight:900}.cash-icon.income{background:#dcfce7;color:#15803d}.cash-icon.expense{background:#fee2e2;color:#b91c1c}
.cash-amount{font-weight:900;text-align:right}.cash-amount small{display:block;font-size:10px;color:#b91c1c}.income-text{color:#15803d}.expense-text{color:#b91c1c}
.table-wrap{overflow:auto;margin-top:10px}table{width:100%;border-collapse:collapse;font-size:13px}th,td{padding:12px 10px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}th{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.chip.paid{background:#dcfce7;color:#166534}.chip.unpaid{background:#fee2e2;color:#991b1b}.chip.partial{background:#fef3c7;color:#92400e}
.error-panel{border-color:#fecaca;background:#fff7f7}.error-panel p{color:#7f1d1d}
.skeleton-wrap{display:grid;gap:12px}.skeleton-line{height:72px;border-radius:16px;background:linear-gradient(90deg,#e2e8f0 25%,#f1f5f9 40%,#e2e8f0 65%);background-size:300% 100%;animation:shimmer 1.2s infinite}
@keyframes shimmer{0%{background-position:100% 0}100%{background-position:0 0}}
.bottom-nav{display:none}
@media(max-width:820px){
  .sidebar{display:none}
  .main{margin-left:0}
  .topbar{height:64px;padding:0 16px}
  .topbar h1{font-size:19px}
  .content{width:min(100% - 24px,720px);padding-top:18px}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric-grid.compact{grid-template-columns:1fr}
  .quick-grid{grid-template-columns:1fr}
  .bottom-nav{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;background:white;border-top:1px solid var(--line);z-index:30;padding:7px 6px max(7px,env(safe-area-inset-bottom))}
  .bottom-nav button{border:0;background:transparent;color:#64748b;font-size:11px;font-weight:800;padding:8px 4px;border-radius:10px}.bottom-nav button.active{color:var(--primary);background:#eff6ff}
}

.pay-btn{border:0;background:var(--primary);color:white;border-radius:10px;padding:8px 11px;font-size:12px;font-weight:900;cursor:pointer;white-space:nowrap}
.pay-btn:hover{filter:brightness(.96)}
.modal-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.48);display:grid;place-items:center;padding:18px;z-index:100}
.modal-card{width:min(520px,100%);max-height:calc(100vh - 36px);overflow:auto;background:white;border-radius:22px;padding:22px;box-shadow:0 24px 70px rgba(15,23,42,.28)}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
.modal-head h2{margin:5px 0 0;font-size:22px}
.modal-close{width:36px;height:36px;border:1px solid var(--line);background:white;border-radius:10px;cursor:pointer;font-size:22px;line-height:1}
.payment-bill-meta{margin:16px 0;background:#f8fafc;border:1px solid var(--line);border-radius:14px;padding:13px;font-size:13px;line-height:1.55;color:#475569}
.payment-bill-meta strong{color:var(--text)}
.field{display:grid;gap:7px;margin-top:14px}
.field>span{font-size:12px;font-weight:800;color:#475569}
.field em{font-style:normal;font-weight:500;color:#94a3b8}
.field input,.field select,.field textarea{width:100%;border:1px solid #cbd5e1;border-radius:11px;padding:11px 12px;background:white;color:var(--text);font:inherit;outline:none}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.1)}
.field small{color:var(--muted);font-size:11px}
.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-error{margin-top:14px;padding:10px 12px;border-radius:10px;background:#fee2e2;color:#991b1b;font-size:12px;font-weight:700}
.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}
.secondary-btn{border:1px solid var(--line);background:white;color:var(--text);border-radius:11px;padding:11px 14px;font-weight:800;cursor:pointer}
.primary-btn.inline{width:auto;margin:0}
.primary-btn:disabled,.pay-btn:disabled{opacity:.6;cursor:not-allowed}
.toast{position:fixed;right:18px;bottom:18px;z-index:120;background:#0f172a;color:white;border-radius:13px;padding:12px 15px;font-size:13px;font-weight:700;box-shadow:0 16px 40px rgba(15,23,42,.2)}
.toast.success{background:#166534}
.toast.error{background:#991b1b}
@media(max-width:600px){
  .field-grid{grid-template-columns:1fr}
  .modal-actions{display:grid;grid-template-columns:1fr 1fr}
  .primary-btn.inline{width:100%}
  .toast{left:12px;right:12px;bottom:84px;text-align:center}
}

.cash-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.cash-action-btn{border:0;border-radius:11px;padding:9px 12px;font-size:12px;font-weight:900;cursor:pointer;white-space:nowrap}
.cash-action-btn.income{background:#dcfce7;color:#166534}
.cash-action-btn.expense{background:#fee2e2;color:#991b1b}
.cash-action-btn:hover{filter:brightness(.97)}
@media(max-width:600px){
  .cash-actions{width:100%;justify-content:stretch}
  .cash-action-btn{flex:1}
  .panel-head.cash-head{flex-wrap:wrap}
}

.cash-row-actions{display:flex;align-items:center;gap:10px}
.void-btn{border:1px solid #fecaca;background:#fff;color:#b91c1c;border-radius:9px;padding:7px 9px;font-size:11px;font-weight:900;cursor:pointer;white-space:nowrap}
.void-btn:hover{background:#fef2f2}
.danger-btn{border:0;background:#dc2626;color:white;border-radius:11px;padding:11px 14px;font-weight:900;cursor:pointer}
.danger-btn:hover{background:#b91c1c}
.danger-btn:disabled{opacity:.6;cursor:not-allowed}
.danger-eyebrow{color:#dc2626}
.small-modal{width:min(470px,100%)}
.void-label{display:inline-block;margin-top:4px;font-size:10px;font-weight:900;color:#b91c1c}
@media(max-width:600px){
  .cash-row-actions{align-items:flex-end;flex-direction:column}
}

.bill-actions{display:flex;gap:7px;align-items:center}
.correction-btn{border:1px solid #cbd5e1;background:#fff;color:#334155;border-radius:9px;padding:7px 9px;font-size:11px;font-weight:900;cursor:pointer;white-space:nowrap}
.correction-btn:hover{background:#f8fafc}
.payment-history-body{display:grid;gap:10px;margin-top:14px}
.payment-history-item{border:1px solid var(--line);border-radius:14px;padding:13px;display:flex;gap:12px;align-items:center}
.payment-history-main{min-width:0;flex:1}
.payment-history-main strong,.payment-history-main span{display:block}
.payment-history-main span{font-size:12px;color:var(--muted);margin-top:4px}
.payment-history-side{text-align:right}
.payment-history-side strong{display:block}
.payment-history-side .void-label{margin-top:5px}
.empty-state{border:1px dashed #cbd5e1;border-radius:14px;padding:18px;text-align:center;color:var(--muted);font-size:13px}
.history-loading{height:72px;border-radius:14px;background:linear-gradient(90deg,#e2e8f0 25%,#f1f5f9 40%,#e2e8f0 65%);background-size:300% 100%;animation:shimmer 1.2s infinite}
@media(max-width:600px){
  .bill-actions{flex-direction:column;align-items:stretch}
  .payment-history-item{align-items:flex-start}
  .payment-history-side{display:grid;justify-items:end}
}