:root{
  --navy:#0B2545;
  --navy-light:#12315E;
  --blue-700:#1D4ED8;
  --blue-600:#2563EB;
  --blue-500:#3B82F6;
  --blue-100:#DBEAFE;
  --blue-50:#EFF6FF;
  --page-bg:#F5F8FF;
  --white:#FFFFFF;
  --ink:#0F172A;
  --muted:#64748B;
  --border:#E2E8F0;
  --good:#16A34A;
  --good-bg:#DCFCE7;
  --warn:#D97706;
  --warn-bg:#FEF3C7;
  --bad:#DC2626;
  --bad-bg:#FEE2E2;
  --radius:12px;
  --font-display:'Montserrat',sans-serif;
  --font-mono:'Roboto Mono',monospace;
}
*{box-sizing:border-box;margin:0;padding:0;}
body{
  font-family:var(--font-display);
  background:var(--page-bg);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
}
button{font-family:inherit;cursor:pointer;}
input,select{font-family:inherit;}
::selection{background:var(--blue-100);}
a{color:inherit;}

/* ===== LOGIN ===== */
.login-view{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  background:
    radial-gradient(circle at 15% 20%, rgba(59,130,246,0.35), transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(29,78,216,0.35), transparent 45%),
    linear-gradient(160deg, var(--navy) 0%, #081A34 100%);
  padding:24px;
}
.login-card{
  width:100%;
  max-width:400px;
  background:var(--white);
  border-radius:var(--radius);
  padding:40px 36px;
  box-shadow:0 30px 60px -20px rgba(4,20,48,0.5);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:28px;
}
.brand-mark{
  width:38px;height:38px;border-radius:9px;
  background:linear-gradient(135deg,var(--blue-600),var(--navy));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:16px;
}
.brand-name{font-weight:800;font-size:19px;letter-spacing:-0.02em;}
.brand-tag{font-size:11px;color:var(--muted);letter-spacing:0.08em;text-transform:uppercase;margin-top:-2px;}
.login-card h1{font-size:21px;font-weight:700;margin-bottom:4px;}
.login-card p.sub{color:var(--muted);font-size:13.5px;margin-bottom:26px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:12.5px;font-weight:600;margin-bottom:6px;color:var(--ink);}
.field input{
  width:100%;padding:11px 13px;border:1.5px solid var(--border);
  border-radius:8px;font-size:14px;outline:none;transition:border-color .15s;
  background:#FBFCFF;
}
.field input:focus{border-color:var(--blue-500);background:#fff;}
.login-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px;font-size:12.5px;}
.login-row label{display:flex;align-items:center;gap:6px;color:var(--muted);}
.login-row a{color:var(--blue-600);text-decoration:none;font-weight:600;}
.btn-primary{
  display:block;width:100%;padding:12px;border:none;border-radius:8px;
  background:var(--blue-700);color:#fff;font-weight:700;font-size:14px;text-align:center;
  letter-spacing:0.01em;text-decoration:none;
  transition:background .15s, transform .1s;
}
.btn-primary:hover{background:var(--navy);}
.login-foot{margin-top:20px;text-align:center;font-size:11.5px;color:var(--muted);}

/* ===== APP SHELL ===== */
.dashboard-shell{display:flex;min-height:100vh;}

.sidebar{
  width:250px;flex-shrink:0;
  background:var(--navy);
  color:#fff;
  display:flex;flex-direction:column;
  padding:20px 14px;
  position:sticky;top:0;height:100vh;
  overflow-y:auto;
}
.sidebar .brand{padding:6px 8px 22px;margin-bottom:6px;border-bottom:1px solid rgba(255,255,255,0.08);}
.sidebar .brand-name{color:#fff;}
.sidebar .brand-tag{color:#8CA6D6;}
.nav-group-label{
  font-size:10.5px;font-weight:700;letter-spacing:0.09em;text-transform:uppercase;
  color:#5F7CAE;margin:16px 10px 6px;
}
.nav-item{
  display:flex;align-items:center;gap:11px;
  padding:9px 11px;border-radius:8px;
  color:#C4D3EE;font-size:13.5px;font-weight:500;
  text-decoration:none;border:none;background:none;width:100%;text-align:left;
  margin-bottom:2px;
}
.nav-item .ic{width:18px;height:18px;flex-shrink:0;opacity:0.85;}
.nav-item:hover{background:rgba(255,255,255,0.06);color:#fff;}
.nav-item.active{background:var(--blue-700);color:#fff;}
.nav-item .badge{
  margin-left:auto;background:var(--bad);color:#fff;font-size:10px;font-weight:700;
  padding:1px 6px;border-radius:20px;
}
.sidebar-foot{margin-top:auto;padding-top:14px;border-top:1px solid rgba(255,255,255,0.08);}

.main{flex:1;min-width:0;display:flex;flex-direction:column;}
.topbar{
  height:64px;background:#fff;border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 26px;position:sticky;top:0;z-index:5;
}
.topbar h2{font-size:17px;font-weight:700;}
.topbar .sub{font-size:12px;color:var(--muted);font-weight:500;margin-top:1px;}
.top-right{display:flex;align-items:center;gap:16px;}
.icon-btn{
  width:34px;height:34px;border-radius:8px;border:1px solid var(--border);
  background:#fff;display:flex;align-items:center;justify-content:center;color:var(--muted);
}
.avatar{
  width:34px;height:34px;border-radius:8px;background:var(--blue-100);color:var(--blue-700);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;
}
.content{padding:26px;max-width:1400px;width:100%;margin:0 auto;}
.section{animation:fadeIn .2s ease;}
@keyframes fadeIn{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}

.section-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:18px;flex-wrap:wrap;gap:12px;}
.section-head h1{font-size:22px;font-weight:800;letter-spacing:-0.01em;}
.section-head p{font-size:13px;color:var(--muted);margin-top:3px;}
.btn{
  padding:9px 16px;border-radius:8px;font-weight:600;font-size:13px;border:1px solid var(--border);
  background:#fff;color:var(--ink);display:inline-flex;align-items:center;gap:7px;text-decoration:none;
}
.btn-blue{background:var(--blue-700);color:#fff;border-color:var(--blue-700);}
.btn-blue:hover{background:var(--navy);}

/* stat cards */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:22px;}
.stat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;}
.stat-card .label{font-size:12px;color:var(--muted);font-weight:600;}
.stat-card .value{font-size:24px;font-weight:800;margin-top:6px;}
.stat-card .delta{font-size:11.5px;margin-top:4px;font-weight:600;}
.delta.up{color:var(--good);} .delta.down{color:var(--bad);}

/* card / table */
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;margin-bottom:20px;}
.card-head{padding:16px 18px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;}
.card-head h3{font-size:14.5px;font-weight:700;}
.card-body{padding:4px 0;}
table{width:100%;border-collapse:collapse;}
th{
  text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:0.05em;
  color:var(--muted);font-weight:700;padding:11px 18px;border-bottom:1px solid var(--border);
}
td{padding:13px 18px;font-size:13.5px;border-bottom:1px solid #F1F5F9;}
tr:last-child td{border-bottom:none;}
.mono{font-family:var(--font-mono);font-size:12.5px;}
.tag{
  display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:20px;
  font-size:11.5px;font-weight:700;
}
.tag .dot{width:6px;height:6px;border-radius:50%;}
.tag.good{background:var(--good-bg);color:#166534;} .tag.good .dot{background:var(--good);}
.tag.warn{background:var(--warn-bg);color:#92400E;} .tag.warn .dot{background:var(--warn);}
.tag.bad{background:var(--bad-bg);color:#991B1B;} .tag.bad .dot{background:var(--bad);}
.tag.neutral{background:var(--blue-50);color:var(--blue-700);} .tag.neutral .dot{background:var(--blue-500);}
.row-actions{display:flex;gap:8px;}
.row-actions button{
  border:1px solid var(--border);background:#fff;border-radius:6px;padding:5px 10px;font-size:12px;font-weight:600;color:var(--muted);
}
.row-actions button.danger{color:var(--bad);}

.tabs{display:flex;gap:4px;background:var(--blue-50);padding:4px;border-radius:9px;width:fit-content;margin-bottom:16px;}
.tab-btn{padding:7px 16px;border:none;background:none;border-radius:6px;font-size:12.5px;font-weight:700;color:var(--muted);}
.tab-btn.active{background:#fff;color:var(--blue-700);box-shadow:0 1px 2px rgba(0,0,0,0.06);}
.tab-panel{display:none;}
.tab-panel.active{display:block;animation:fadeIn .2s ease;}

.two-col{display:grid;grid-template-columns:1.3fr 1fr;gap:20px;align-items:start;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;padding:18px;}
.form-grid .full{grid-column:1/-1;}
.form-field label{display:block;font-size:12px;font-weight:600;margin-bottom:6px;color:var(--ink);}
.form-field input,.form-field select{
  width:100%;padding:9px 11px;border:1.5px solid var(--border);border-radius:7px;font-size:13px;background:#FBFCFF;
}
.form-actions{padding:0 18px 18px;display:flex;gap:10px;}

/* product cards */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.product-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:18px;}
.product-icon{
  width:42px;height:42px;border-radius:10px;background:var(--blue-50);color:var(--blue-700);
  display:flex;align-items:center;justify-content:center;margin-bottom:12px;font-weight:800;
}
.product-card h4{font-size:14.5px;font-weight:700;margin-bottom:3px;}
.product-card .meta{font-size:12px;color:var(--muted);margin-bottom:12px;}
.product-card .specs{display:flex;justify-content:space-between;font-size:11.5px;padding-top:10px;border-top:1px solid #F1F5F9;}
.product-card .specs div span{display:block;color:var(--muted);}
.product-card .specs div b{font-family:var(--font-mono);font-size:12.5px;}

/* assignment board */
.assign-board{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.assign-col h4{font-size:12px;text-transform:uppercase;letter-spacing:0.05em;color:var(--muted);margin-bottom:10px;font-weight:700;}
.assign-card{
  background:#fff;border:1px solid var(--border);border-left:4px solid var(--blue-500);
  border-radius:9px;padding:12px 14px;margin-bottom:10px;font-size:13px;
}
.assign-card b{display:block;margin-bottom:2px;}
.assign-card .assign-meta{font-size:11.5px;color:var(--muted);}
.arrow-row{display:flex;align-items:center;justify-content:center;gap:8px;color:var(--blue-500);font-size:12px;font-weight:700;margin:2px 0;}

/* map placeholder */
.map-placeholder{
  height:420px;border-radius:var(--radius);border:1px solid var(--border);position:relative;overflow:hidden;
  background:
    linear-gradient(rgba(29,78,216,0.05),rgba(29,78,216,0.05)),
    repeating-linear-gradient(0deg, #EAF1FF 0 1px, transparent 1px 32px),
    repeating-linear-gradient(90deg, #EAF1FF 0 1px, transparent 1px 32px),
    var(--blue-50);
}
.map-pin{
  position:absolute;width:14px;height:14px;border-radius:50%;background:var(--blue-600);
  border:3px solid #fff;box-shadow:0 0 0 4px rgba(37,99,235,0.25);
}
.map-pin.moving{background:var(--good);box-shadow:0 0 0 4px rgba(22,163,74,0.25);}
.map-pin.idle{background:var(--warn);box-shadow:0 0 0 4px rgba(217,119,6,0.25);}
.map-legend{position:absolute;bottom:14px;left:14px;background:#fff;border:1px solid var(--border);border-radius:9px;padding:10px 14px;font-size:11.5px;display:flex;gap:14px;}
.map-legend span{display:flex;align-items:center;gap:6px;}
.map-legend i{width:8px;height:8px;border-radius:50%;display:inline-block;}

/* gauges */
.gauge-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.gauge-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:18px;text-align:center;}
.gauge-card .gname{font-size:13px;font-weight:700;margin-bottom:2px;}
.gauge-card .gloc{font-size:11.5px;color:var(--muted);margin-bottom:10px;}
.gauge-wrap{position:relative;width:120px;height:120px;margin:0 auto 10px;}
.gauge-wrap svg{transform:rotate(-90deg);}
.gauge-track{fill:none;stroke:#EEF2F9;stroke-width:10;}
.gauge-fill{fill:none;stroke-width:10;stroke-linecap:round;}
.gauge-center{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
}
.gauge-center .pct{font-family:var(--font-mono);font-size:20px;font-weight:700;}
.gauge-center .lbl{font-size:9.5px;color:var(--muted);text-transform:uppercase;letter-spacing:0.05em;}
.gauge-foot{display:flex;justify-content:center;gap:14px;font-size:11px;color:var(--muted);font-family:var(--font-mono);}
.gauge-card .gsensor{margin-top:8px;display:flex;justify-content:center;}

.transfer-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:18px;margin-bottom:14px;}
.transfer-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;}
.transfer-top b{font-size:14px;}
.transfer-body{display:grid;grid-template-columns:120px 1fr;gap:20px;align-items:center;}
.transfer-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.transfer-stats div{background:var(--blue-50);border-radius:9px;padding:10px 12px;}
.transfer-stats .t-label{font-size:10.5px;color:var(--muted);text-transform:uppercase;letter-spacing:0.04em;font-weight:700;}
.transfer-stats .t-value{font-family:var(--font-mono);font-size:16px;font-weight:700;margin-top:3px;}

.suggest-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;display:flex;justify-content:space-between;align-items:center;gap:16px;}
.suggest-left b{font-size:13.5px;display:block;margin-bottom:3px;}
.suggest-left span{font-size:12px;color:var(--muted);}
.suggest-right{text-align:right;}
.suggest-right .save{color:var(--good);font-weight:800;font-size:14px;}
.suggest-right .savelbl{font-size:10.5px;color:var(--muted);text-transform:uppercase;}

/* table pagination footer */
.table-foot{display:flex;justify-content:space-between;align-items:center;padding:12px 18px;border-top:1px solid var(--border);font-size:12px;color:var(--muted);}
.table-foot .pg-btns{display:flex;gap:6px;}
.table-foot button{width:28px;height:28px;border:1px solid var(--border);background:#fff;border-radius:6px;font-size:12px;color:var(--muted);}
.table-foot button.active{background:var(--blue-700);color:#fff;border-color:var(--blue-700);}

/* sales bar chart */
.bar-chart{display:flex;align-items:flex-end;gap:18px;height:170px;padding:22px 20px 4px;}
.bar-chart .bar-col{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;gap:8px;}
.bar-chart .bar{width:100%;max-width:40px;border-radius:6px 6px 0 0;background:var(--blue-500);}
.bar-chart .bar-col.peak .bar{background:var(--blue-700);}
.bar-chart .bar-col .bval{font-size:10.5px;font-family:var(--font-mono);color:var(--ink);font-weight:700;}
.bar-chart .bar-col .blabel{font-size:11px;color:var(--muted);margin-top:2px;}

/* sub-tabs nested inside a parent tab (Tanks & Cylinders) */
.tabs.sub{background:#F1F5F9;}

/* inventory flow diagram */
.flow-strip{display:flex;align-items:stretch;gap:0;margin-bottom:22px;overflow-x:auto;}
.flow-step{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;
  min-width:150px;flex:1;
}
.flow-step .fnum{
  width:22px;height:22px;border-radius:50%;background:var(--blue-50);color:var(--blue-700);
  display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:800;margin-bottom:8px;
}
.flow-step h5{font-size:12.5px;font-weight:700;margin-bottom:3px;}
.flow-step p{font-size:11px;color:var(--muted);line-height:1.5;}
.flow-arrow{display:flex;align-items:center;justify-content:center;color:var(--blue-500);font-size:16px;font-weight:700;padding:0 6px;flex-shrink:0;}

@media (max-width:1100px){
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .product-grid,.assign-board,.gauge-grid{grid-template-columns:repeat(2,1fr);}
  .two-col{grid-template-columns:1fr;}
  .flow-strip{flex-direction:column;}
  .flow-arrow{transform:rotate(90deg);padding:4px 0;}
}

/* ===== MODAL / WIZARD (Fleet Assignment + Distributor Requirement) ===== */
.modal-overlay{
  position:fixed;inset:0;z-index:50;display:none;align-items:flex-start;justify-content:center;
  background:rgba(11,37,69,0.55);padding:40px 24px;overflow-y:auto;
}
.modal-overlay.active{display:flex;}
.wizard{
  background:#fff;border-radius:16px;width:100%;max-width:780px;
  box-shadow:0 40px 80px -20px rgba(4,20,48,0.45);
}
.wizard-head{padding:20px 26px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;}
.wizard-head h3{font-size:17px;font-weight:800;}
.wizard-head p{font-size:12.5px;color:var(--muted);margin-top:2px;}
.wizard-close{
  width:32px;height:32px;border-radius:8px;border:1px solid var(--border);background:#fff;
  color:var(--muted);display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.wizard-steps{display:flex;align-items:center;padding:16px 26px;background:var(--blue-50);border-bottom:1px solid var(--border);}
.wstep{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:12px;font-weight:700;white-space:nowrap;}
.wstep .num{
  width:24px;height:24px;border-radius:50%;background:#fff;border:2px solid var(--border);
  display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--muted);flex-shrink:0;
}
.wstep.active{color:var(--ink);}
.wstep.active .num{background:var(--blue-700);border-color:var(--blue-700);color:#fff;}
.wstep.done .num{background:var(--good);border-color:var(--good);color:#fff;font-size:0;}
.wstep.done .num::after{content:'✓';font-size:11px;}
.wline{flex:1;height:2px;background:var(--border);margin:0 10px;}
.wizard-body{padding:24px 26px;max-height:56vh;overflow-y:auto;}
.wizard-panel{display:none;}
.wizard-panel.active{display:block;animation:fadeIn .2s ease;}
.wizard-panel-foot{padding:18px 26px;border-top:1px solid var(--border);display:flex;justify-content:space-between;gap:10px;}

.wsearch{width:100%;padding:9px 12px;border:1.5px solid var(--border);border-radius:8px;font-size:13px;background:#FBFCFF;margin-bottom:14px;}

.select-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.select-card{
  border:1.5px solid var(--border);border-radius:10px;padding:14px 16px;cursor:pointer;position:relative;
  transition:border-color .15s, background .15s;
}
.select-card:hover{border-color:var(--blue-500);}
.select-card.selected{border-color:var(--blue-700);background:var(--blue-50);}
.select-card.disabled{opacity:0.45;cursor:not-allowed;}
.select-card .check{
  position:absolute;top:12px;right:12px;width:18px;height:18px;border-radius:50%;
  border:1.5px solid var(--border);background:#fff;flex-shrink:0;
}
.select-card.selected .check{background:var(--blue-700);border-color:var(--blue-700);position:relative;}
.select-card.selected .check::after{
  content:'✓';color:#fff;font-size:11px;position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
}
.select-card h5{font-size:13.5px;font-weight:700;margin-bottom:4px;padding-right:22px;}
.select-card .sc-meta{font-size:11.5px;color:var(--muted);line-height:1.6;}
.select-card .sc-meta b{color:var(--ink);font-family:var(--font-mono);font-weight:600;}

.wizard-chain{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:10px;align-items:center;margin-bottom:22px;}
.wizard-chain .chain-arrow{color:var(--blue-500);font-size:16px;font-weight:700;}
.wizard-chain .assign-card{margin-bottom:0;}

.wizard-confirm{text-align:center;padding:20px 10px 6px;}
.wizard-confirm .check-circle{
  width:64px;height:64px;border-radius:50%;background:var(--good-bg);color:var(--good);
  display:flex;align-items:center;justify-content:center;margin:0 auto 18px;font-size:30px;font-weight:800;
}
.wizard-confirm h4{font-size:18px;font-weight:800;margin-bottom:6px;}
.wizard-confirm p{font-size:13px;color:var(--muted);margin-bottom:4px;}
.wizard-confirm .disp-id{font-family:var(--font-mono);font-size:15px;font-weight:700;color:var(--blue-700);margin:10px 0 22px;}
.wizard-confirm-actions{display:flex;gap:10px;justify-content:center;padding-bottom:8px;}