:root{
  --ink:#16202b;--muted:#5d6b7a;--line:#dfe5ec;--bg:#f4f6f9;--card:#fff;
  --brand:#0e3a5c;--brand2:#1c7c8c;--accent:#e8752a;
  --good:#1d7a46;--goodbg:#e4f4ea;--warn:#8a5a00;--warnbg:#fdf1d7;--bad:#a12626;--badbg:#fbe4e4;
  --brand-ink:#fff;--brand2-ink:#fff;
  --r:8px;--font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font:14px/1.45 var(--font);color:var(--ink);background:var(--bg)}
a{color:var(--brand2);text-decoration:none}a:hover{text-decoration:underline}
h1{font-size:20px;margin:0}h2{font-size:16px;margin:0 0 10px}h3{font-size:14px;margin:16px 0 8px}
code,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.5px}
small{color:var(--muted)}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;line-height:1.1}
.brand small{display:block;font-weight:500;font-size:11px;letter-spacing:.08em;text-transform:uppercase;opacity:.75}
.mark{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,var(--brand2),var(--accent));color:#fff;font-weight:800;font-size:13px}

/* admin shell */
body.admin{display:grid;grid-template-columns:220px 1fr;min-height:100vh}
.side{background:var(--brand);color:var(--brand-ink);padding:16px 0;position:sticky;top:0;height:100vh;overflow:auto}
.side .brand{padding:0 16px 14px;color:var(--brand-ink)}
.navgroup{padding:6px 0}
.navgroup h6{margin:8px 16px 4px;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--brand-ink);opacity:.55;font-weight:600}
.side nav a{display:block;padding:6px 16px;color:var(--brand-ink);opacity:.86;border-left:3px solid transparent}
.side nav a:hover{background:rgba(127,127,127,.16);text-decoration:none;opacity:1}
.side nav a.on{background:rgba(127,127,127,.24);border-left-color:var(--accent);opacity:1;font-weight:600}
.main{min-width:0;display:flex;flex-direction:column}
.top{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:14px 24px;background:var(--card);border-bottom:1px solid var(--line)}
.who{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px}
.content{padding:20px 24px;flex:1}
.foot{padding:12px 24px;color:var(--muted);font-size:12px}

/* shared components */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px;margin-bottom:16px}
.card.flush{padding:0;overflow:auto}
.card>h2:first-child{margin-top:0}
.grid{display:grid;gap:16px}.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px}
.stat b{display:block;font-size:22px;font-weight:700;letter-spacing:-.01em}
.stat span{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.05em}
.stat.alert b{color:var(--bad)}
table{border-collapse:collapse;width:100%}
th,td{padding:8px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:11.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600;background:#fafbfc;white-space:nowrap}
tr:last-child td{border-bottom:0}
tbody tr:hover td{background:#fafcfe}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
tr.total td{font-weight:700;border-top:2px solid var(--line)}
.empty{padding:22px;text-align:center;color:var(--muted)}
.badge,.pill{display:inline-block;padding:1px 8px;border-radius:999px;font-size:11.5px;font-weight:600;background:#e9eef3;color:#42525f;white-space:nowrap}
.badge.good{background:var(--goodbg);color:var(--good)}.badge.warn{background:var(--warnbg);color:var(--warn)}.badge.bad{background:var(--badbg);color:var(--bad)}
.flash{padding:10px 14px;border-radius:var(--r);margin-bottom:14px;border:1px solid}
.flash.ok{background:var(--goodbg);border-color:#b9e0c8;color:var(--good)}
.flash.err{background:var(--badbg);border-color:#f0bcbc;color:var(--bad)}
.flash.warn{background:var(--warnbg);border-color:#efd9a0;color:var(--warn)}
.note{background:#eef5fb;border:1px solid #cfe0ee;border-radius:var(--r);padding:10px 14px;margin-bottom:14px;color:#274760}
.note.warn{background:var(--warnbg);border-color:#efd9a0;color:var(--warn)}
.toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end;margin-bottom:14px}
.toolbar .spacer{flex:1}
.tabs{display:flex;flex-wrap:wrap;gap:2px;border-bottom:1px solid var(--line);margin-bottom:16px}
.tabs a{padding:8px 14px;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px}
.tabs a.on{color:var(--ink);border-bottom-color:var(--accent);font-weight:600}
.tabs a:hover{text-decoration:none;color:var(--ink)}
.chips{display:flex;flex-wrap:wrap;gap:8px 18px;margin-bottom:14px;color:var(--muted)}
.chips b{color:var(--ink);font-weight:600}
.pager{display:flex;gap:12px;align-items:center;padding:10px 12px;color:var(--muted);font-size:13px}
.pager .off{opacity:.4}
.kv{display:grid;grid-template-columns:max-content 1fr;gap:4px 16px}
.kv dt{color:var(--muted)}.kv dd{margin:0}
.right{text-align:right}.muted{color:var(--muted)}.nowrap{white-space:nowrap}.neg{color:var(--bad)}
pre.raw{background:#0f1b26;color:#d6e4ef;padding:12px;border-radius:var(--r);overflow:auto;max-height:340px;font-size:12px;white-space:pre-wrap;word-break:break-all}

/* forms */
form.inline{display:inline}
.form{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px 16px;align-items:start}
label.f{display:flex;flex-direction:column;gap:4px;font-size:12.5px;color:var(--muted)}
label.f.wide{grid-column:1/-1}
label.f>span{font-weight:600}
label.f.chk{flex-direction:row;align-items:center;flex-wrap:wrap;gap:6px;padding-top:20px;color:var(--ink)}
label.f.chk small{flex-basis:100%}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=date],input[type=month],input[type=url],input[type=search],input[type=file],select,textarea{
  font:inherit;color:var(--ink);padding:7px 9px;border:1px solid #c6d0da;border-radius:6px;background:#fff;width:100%;min-width:0}
input:focus,select:focus,textarea:focus{outline:2px solid #9ccbd4;outline-offset:0;border-color:var(--brand2)}
textarea{resize:vertical}
.actions{grid-column:1/-1;display:flex;gap:10px;align-items:center;margin-top:4px}
button,.btn{font:inherit;font-weight:600;padding:7px 14px;border-radius:6px;border:1px solid var(--brand2);background:var(--brand2);color:var(--brand2-ink);cursor:pointer;display:inline-block;line-height:1.3}
button:hover,.btn:hover{filter:brightness(1.07);text-decoration:none}
button.sec,.btn.sec{background:#fff;color:var(--brand2)}
button.danger,.btn.danger{background:var(--bad);border-color:var(--bad)}
button.small,.btn.small{padding:3px 9px;font-size:12.5px}
button.link{background:none;border:0;color:var(--brand2);padding:0;font-weight:500}
button[disabled]{opacity:.5;cursor:not-allowed}
details.box{border:1px dashed #c6d0da;border-radius:var(--r);padding:10px 14px;margin-bottom:16px;background:#fff}
details.box>summary{cursor:pointer;font-weight:600;color:var(--brand2)}
details.box[open]>summary{margin-bottom:12px}

/* form sections (billing / service address) */
.form h3{grid-column:1/-1;margin:8px 0 0;padding-top:12px;border-top:1px solid var(--line);font-size:14px}
.form h3:first-child{border-top:0;padding-top:0;margin-top:0}
.form .formhelp{grid-column:1/-1;margin:-8px 0 0;color:var(--muted);font-size:12.5px}
.addr2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.addr2 h3{margin:0 0 4px}
@media (max-width:900px){.addr2{grid-template-columns:1fr}}

/* services (master) with their subscriptions (detail) */
.svchead{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;padding:14px 16px 10px;border-bottom:1px solid var(--line)}
.svchead h2{margin:0 0 2px}
.svctotal{text-align:right;white-space:nowrap}.svctotal small{display:block}.svctotal b{font-size:18px}
.card.svc{border-left:4px solid var(--brand)}
.svcfoot{padding:10px 16px 12px;border-top:1px solid var(--line);background:#fafbfc;display:grid;gap:8px}
.svcfoot summary{cursor:pointer;color:var(--brand2);font-weight:600}
.svcfoot details[open]>summary{margin-bottom:12px}
details.svc>summary,details.card>summary.svchead{cursor:pointer;list-style:none}
details.card>summary.svchead::-webkit-details-marker{display:none}
details.card>summary.svchead h2::before{content:'▸';display:inline-block;width:18px;color:var(--muted);font-weight:400}
details.card[open]>summary.svchead h2::before{content:'▾'}
details.card:not([open])>summary.svchead{border-bottom:0}
details.card>summary.svchead small{margin-left:18px}
details.card>summary.svchead .svctotal small{margin-left:0}
tr.master td{background:#f1f5f9;font-weight:700;border-top:2px solid var(--line)}
tr.detail td:first-child{padding-left:28px}

/* rtBill's own pages: welcome page at the main address, platform sign-in */
body.auth.rtbill{background:linear-gradient(160deg,#0b2545,#1672e6);grid-template-rows:1fr auto}
.rtlogo{display:block;width:100%;max-width:330px;height:auto;margin:0 auto 6px}
.rtsub{text-align:center;color:var(--muted);font-size:12px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:16px}
.authbox.welcome{width:min(520px,92vw);text-align:center;padding:32px}
.authbox.welcome .rtlogo{max-width:420px;margin-bottom:14px}
.authbox.welcome h1{font-size:20px;margin:6px 0 6px}
.authbox.welcome p{color:var(--muted);margin:0 0 16px}
.welcomebox{text-align:left;background:#f4f7fb;border:1px solid var(--line);border-radius:var(--r);padding:12px 14px;margin-bottom:10px;color:var(--ink)}
.authbox.welcome .alt{margin:16px 0 0;padding-top:14px}
.authbox.welcome .alt a{color:#1672e6}
.rtfoot{color:rgba(255,255,255,.75);font-size:12.5px;padding:14px;text-align:center}
body.auth.rtbill button{background:#1672e6;border-color:#1672e6;color:#fff}
.rticon{width:36px;height:36px;border-radius:8px;background:#fff;padding:3px}

/* per-company branding */
.brand.haslogo img{max-height:38px;max-width:190px;display:block}
.brand.haslogo small{opacity:.75}
.authbox .brand.haslogo{flex-direction:column;align-items:flex-start;gap:6px}
.authbox .brand.haslogo img{max-height:56px;max-width:240px}
body.portal.lighthead .ptop{background:#fff;color:var(--ink);border-bottom:3px solid var(--brand)}
body.portal.lighthead .ptop nav a,body.portal.lighthead .ptop .who,body.portal.lighthead .ptop .who button.link{color:var(--ink)}
body.portal.lighthead .ptop nav a.on{background:var(--brand);color:var(--brand-ink)}
body.platform{--brand:#1f2430;--brand2:#3b5bdb;--accent:#f59f00}
.swatches{display:flex;gap:8px;align-items:center}
.swatches i{display:inline-block;width:28px;height:28px;border-radius:6px;border:1px solid var(--line)}
input[type=color]{padding:2px;height:36px;width:64px;border:1px solid #c6d0da;border-radius:6px;background:#fff}
.lines-edit td{padding:4px 6px;border-bottom:0}.lines-edit input,.lines-edit select{min-width:70px}
.lines-edit td.amt{font-variant-numeric:tabular-nums;text-align:right;white-space:nowrap;padding-top:12px}

/* two-step setup */
.totp-setup{display:flex;gap:24px;flex-wrap:wrap;align-items:flex-start}
.qr{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:10px;line-height:0}
.qr svg{width:220px;height:220px;display:block}
.totp-steps{flex:1;min-width:280px}
.totp-steps ol{margin:0 0 12px;padding-left:20px}
.totp-steps li{margin-bottom:8px}
.setupkey{font-size:15px;letter-spacing:.06em;user-select:all}

/* auth pages */
body.auth{display:grid;place-items:center;min-height:100vh;background:linear-gradient(160deg,var(--brand),var(--brand2))}
.authbox{background:#fff;border-radius:12px;padding:28px;width:min(400px,92vw);box-shadow:0 20px 50px rgba(0,0,0,.25)}
.authbox .brand.big{margin-bottom:18px;font-size:17px}
.authbox form{display:grid;gap:12px}
.authbox .alt{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);font-size:13px}

/* portal */
body.portal{background:var(--bg)}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
.ptop{background:var(--brand);color:var(--brand-ink)}
.ptop .wrap{display:flex;align-items:center;gap:22px;min-height:60px;flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
.ptop nav{display:flex;gap:4px;flex:1;flex-wrap:wrap}
.ptop nav a{color:var(--brand-ink);opacity:.86;padding:6px 12px;border-radius:6px}
.ptop nav a.on,.ptop nav a:hover{background:rgba(127,127,127,.22);opacity:1;text-decoration:none}
.ptop .who{color:var(--brand-ink)}.ptop .who button.link{color:var(--brand-ink)}.ptop select{width:auto;padding:4px 8px}
body.portal main{padding-top:22px;padding-bottom:30px}
body.portal main>h1{margin-bottom:16px;font-size:22px}
.pfoot{padding:18px 20px 30px;color:var(--muted);font-size:12.5px;text-align:center}
.impbar{background:#b4530c;color:#fff;padding:6px 20px;text-align:center;font-weight:600}
.impbar button.link{color:#fff;text-decoration:underline}
.hero{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.hero .amt{font-size:34px;font-weight:800;letter-spacing:-.02em}

@media (max-width:900px){
  body.admin{grid-template-columns:1fr}
  .side{position:static;height:auto}
  .side nav{display:flex;flex-wrap:wrap}
  .navgroup{padding:2px 0}.navgroup h6{display:none}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .content{padding:14px}
}
@media print{.side,.top .who,.toolbar,.pager{display:none}body.admin{display:block}}