:root{
  --primary:#1565C0; --primary-dark:#0D47A1; --primary-light:#42A5F5;
  --accent:#FF6D00; --green:#2E7D32; --red:#C62828; --amber:#F9A825;
  --bg:#ECEFF1; --surface:#FFFFFF; --text:#212121; --muted:#607D8B;
  --border:#CFD8DC; --shadow:0 2px 6px rgba(0,0,0,.12); --shadow-lg:0 8px 24px rgba(0,0,0,.18);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:'Roboto',system-ui,sans-serif;background:var(--bg);color:var(--text);-webkit-tap-highlight-color:transparent}
button{font-family:inherit;cursor:pointer;border:none;outline:none}
input,select,textarea{font-family:inherit;font-size:15px}

/* ---------- Login ---------- */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary-dark),var(--primary-light));padding:20px}
.login-card{background:var(--surface);border-radius:16px;box-shadow:var(--shadow-lg);
  width:100%;max-width:380px;padding:36px 28px;text-align:center;animation:pop .3s ease}
@keyframes pop{from{transform:scale(.92);opacity:0}to{transform:scale(1);opacity:1}}
.login-logo{width:96px;height:96px;
  display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.login-logo img{width:96px;height:96px;object-fit:contain;filter:drop-shadow(0 4px 10px rgba(13,71,161,.35))}
.login-card h1{font-size:22px;color:var(--primary-dark);margin-bottom:2px}
.login-card p.sub{color:var(--muted);font-size:13px;margin-bottom:24px}

/* ---------- Material text field ---------- */
.field{position:relative;margin-bottom:18px;text-align:left}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;font-weight:500}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1.5px solid var(--border);
  border-radius:10px;background:#fff;transition:border .15s,box-shadow .15s}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(21,101,192,.12)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:10px;
  font-weight:500;font-size:15px;transition:transform .08s,box-shadow .15s,background .15s;background:var(--primary);color:#fff}
.btn:active{transform:scale(.97)}
.btn:hover{box-shadow:var(--shadow)}
.btn.full{width:100%}
.btn.accent{background:var(--accent)}
.btn.green{background:var(--green)}
.btn.red{background:var(--red)}
.btn.ghost{background:transparent;color:var(--primary);border:1.5px solid var(--primary)}
.btn.sm{padding:7px 12px;font-size:13px;border-radius:8px}
.btn.icon{padding:8px;width:38px;height:38px;border-radius:50%}
.btn:disabled{opacity:.55;cursor:not-allowed}

/* ---------- App shell ---------- */
.app{display:flex;min-height:100vh}
.sidebar{width:250px;background:var(--primary-dark);color:#fff;position:fixed;top:0;bottom:0;left:0;
  display:flex;flex-direction:column;z-index:100;transition:transform .25s}
.sidebar .brand{padding:20px 18px;display:flex;align-items:center;gap:12px;border-bottom:1px solid rgba(255,255,255,.12)}
.sidebar .brand .ico{width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.sidebar .brand .ico img{width:44px;height:44px;object-fit:contain;filter:drop-shadow(0 2px 4px rgba(0,0,0,.3))}
.sidebar .brand h2{font-size:16px;line-height:1.2}
.sidebar .brand small{font-size:11px;opacity:.7}
.nav{flex:1;padding:12px 10px;overflow-y:auto}
.nav a{display:flex;align-items:center;gap:14px;padding:12px 14px;border-radius:10px;color:#cfd8dc;
  text-decoration:none;font-size:15px;margin-bottom:3px;cursor:pointer;transition:background .15s,color .15s}
.nav a i{width:20px;text-align:center;font-size:16px}
.nav a:hover{background:rgba(255,255,255,.08);color:#fff}
.nav a.active{background:var(--primary);color:#fff;box-shadow:var(--shadow)}
.sidebar .foot{padding:14px 16px;border-top:1px solid rgba(255,255,255,.12);font-size:13px}
.sidebar .foot .user{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.sidebar .foot .avatar{width:36px;height:36px;border-radius:50%;background:var(--accent);
  display:flex;align-items:center;justify-content:center;font-weight:700}

.main{flex:1;margin-left:250px;min-width:0}
.topbar{background:var(--surface);box-shadow:var(--shadow);padding:14px 22px;display:flex;
  align-items:center;gap:14px;position:sticky;top:0;z-index:50}
.topbar .menu-btn{display:none;font-size:22px;color:var(--primary-dark);background:none}
.topbar h1{font-size:20px;color:var(--text);font-weight:500}
.content{padding:22px}

/* ---------- Cards & stats ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;margin-bottom:24px}
.stat-card{background:var(--surface);border-radius:14px;padding:18px;box-shadow:var(--shadow);
  display:flex;align-items:center;gap:16px;transition:transform .12s}
.stat-card:hover{transform:translateY(-2px)}
.stat-card .ic{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;flex-shrink:0}
.stat-card .v{font-size:22px;font-weight:700}
.stat-card .l{font-size:13px;color:var(--muted)}

.card{background:var(--surface);border-radius:14px;box-shadow:var(--shadow);margin-bottom:20px;overflow:hidden}
.card-head{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.card-head h3{font-size:17px;font-weight:500;color:var(--text);display:flex;align-items:center;gap:10px}
.card-body{padding:20px}

/* ---------- Table ---------- */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse}
th,td{padding:12px 14px;text-align:left;font-size:14px;border-bottom:1px solid var(--border);white-space:nowrap}
th{background:#F5F7F8;color:var(--muted);font-weight:500;font-size:12px;text-transform:uppercase;letter-spacing:.04em}
tbody tr:hover{background:#F9FAFB}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}

.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:500}
.badge.buy{background:#FFF3E0;color:#E65100}
.badge.sell{background:#E8F5E9;color:#2E7D32}
.badge.admin{background:#E3F2FD;color:#1565C0}
.badge.staff{background:#F3E5F5;color:#6A1B9A}
.badge.pos{background:#E8F5E9;color:#2E7D32}
.badge.neg{background:#FFEBEE;color:#C62828}
.badge.zero{background:#ECEFF1;color:#607D8B}

/* ---------- Modal ---------- */
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);display:flex;align-items:flex-start;justify-content:center;
  z-index:200;padding:20px;overflow-y:auto;animation:fade .2s}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal{background:var(--surface);border-radius:16px;box-shadow:var(--shadow-lg);width:100%;max-width:620px;
  margin:auto;animation:slideup .25s ease}
.modal.wide{max-width:860px}
@keyframes slideup{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}
.modal-head{padding:18px 22px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.modal-head h3{font-size:18px;font-weight:500}
.modal-head .close{background:none;font-size:22px;color:var(--muted)}
.modal-body{padding:22px;max-height:70vh;overflow-y:auto}
.modal-foot{padding:16px 22px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:12px}

.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.row3{display:grid;grid-template-columns:2fr 1fr 1fr auto;gap:10px;align-items:end}

/* ---------- Bill item rows ---------- */
.item-row{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr auto;gap:10px;align-items:center;
  padding:10px;background:#F5F7F8;border-radius:10px;margin-bottom:10px}
.item-row .amt{font-weight:700;color:var(--primary-dark);text-align:right}

/* ---------- Buy/Sell toggle ---------- */
.toggle{display:flex;background:#ECEFF1;border-radius:12px;padding:5px;gap:5px;margin-bottom:6px}
.toggle button{flex:1;padding:12px;border-radius:9px;background:transparent;font-weight:600;color:var(--muted);transition:.15s}
.toggle button.act-buy{background:var(--accent);color:#fff;box-shadow:var(--shadow)}
.toggle button.act-sell{background:var(--green);color:#fff;box-shadow:var(--shadow)}

/* ---------- misc ---------- */
.empty{text-align:center;padding:50px 20px;color:var(--muted)}
.empty i{font-size:46px;opacity:.4;margin-bottom:12px;display:block}
.chip{display:inline-block;padding:4px 10px;background:#E3F2FD;color:var(--primary-dark);border-radius:8px;font-size:12px;margin:2px}
.fab{position:fixed;bottom:26px;right:26px;width:58px;height:58px;border-radius:50%;background:var(--accent);
  color:#fff;font-size:24px;box-shadow:var(--shadow-lg);z-index:60;display:flex;align-items:center;justify-content:center}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#323232;color:#fff;padding:13px 22px;
  border-radius:10px;box-shadow:var(--shadow-lg);z-index:500;font-size:14px;animation:slideup .25s}
.toast.err{background:var(--red)}
.toast.ok{background:var(--green)}
.perm-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:8px}
.perm-item{display:flex;align-items:center;gap:10px;padding:10px 12px;background:#F5F7F8;border-radius:10px;font-size:14px}
.perm-item input{width:18px;height:18px}
.search-box{position:relative;flex:1;min-width:180px;max-width:320px}
.search-box input{padding-left:38px}
.search-box i{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--muted)}
.autocomplete{position:relative}
.ac-list{position:absolute;top:100%;left:0;right:0;background:#fff;border:1px solid var(--border);border-radius:10px;
  box-shadow:var(--shadow-lg);z-index:20;max-height:220px;overflow-y:auto;margin-top:4px}
.ac-list div{padding:10px 14px;cursor:pointer;font-size:14px;border-bottom:1px solid #F0F0F0}
.ac-list div:hover{background:#E3F2FD}
.ac-list div small{color:var(--muted)}

@media(max-width:860px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0);box-shadow:var(--shadow-lg)}
  .main{margin-left:0}
  .topbar .menu-btn{display:block}
  .row2,.perm-grid{grid-template-columns:1fr}
  .row3{grid-template-columns:1fr 1fr}
  .item-row{grid-template-columns:1fr 1fr;gap:8px}
  .item-row .amt{grid-column:1/2}
  .backdrop{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:90}
}

/* ===== Full-screen Ledger page (/ledger/:id) ===== */
.ledger-page-body{background:var(--bg);min-height:100vh}
.ledger-page{max-width:1000px;margin:0 auto;padding:20px 18px 60px}
.lp-head{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;
  background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;
  border-radius:16px;padding:18px 22px;box-shadow:var(--shadow);margin-bottom:18px}
.lp-brand{display:flex;align-items:center;gap:14px}
.lp-brand .ico{width:48px;height:48px;border-radius:12px;background:rgba(255,255,255,.18);
  display:flex;align-items:center;justify-content:center;font-size:22px}
.lp-brand h1{font-size:20px;font-weight:700;line-height:1.1}
.lp-brand small{opacity:.85;font-size:12.5px}
.lp-actions{display:flex;gap:10px;flex-wrap:wrap}
.lp-actions .btn.ghost{color:#fff;border-color:rgba(255,255,255,.45)}
.lp-summary{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;
  background:var(--surface);border-radius:14px;box-shadow:var(--shadow);padding:18px 22px;margin-bottom:18px}
.lp-party{display:flex;align-items:center;gap:14px}
.lp-avatar{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700}
.lp-name{font-size:19px;font-weight:700;color:var(--text)}
.lp-meta{display:flex;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-top:4px}
.lp-meta i{margin-right:5px}
.lp-bal{text-align:right}
.lp-bal small{color:var(--muted);font-size:12px;display:block;margin-bottom:4px}
.lp-bal-val{font-size:20px;font-weight:700}
.lp-card{margin-bottom:18px}
.ledger-page tfoot td{background:#F5F7F8;border-top:2px solid var(--border)}
@media(max-width:640px){
  .lp-head,.lp-summary{padding:16px}
  .lp-bal{text-align:left}
}