:root{
 --bg:#07111f;--panel:#0b1628;--panel2:#0e1b30;--line:#1b2b43;--text:#edf4ff;--muted:#8ea0b8;
 --accent:#2f7df6;--accent2:#54a2ff;--danger:#f05a67;--ok:#55c989;--shadow:0 18px 60px rgba(0,0,0,.25);
}
html[data-theme="light"]{
 --bg:#f4f7fb;--panel:#ffffff;--panel2:#f9fbfe;--line:#dbe3ee;--text:#152034;--muted:#69798e;
 --accent:#2168df;--accent2:#4c91ff;--shadow:0 14px 45px rgba(29,57,89,.12);
}
*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial;background:var(--bg);color:var(--text)}
a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}
.topbar{height:72px;display:flex;align-items:center;gap:24px;padding:0 24px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--panel) 93%,transparent);position:sticky;top:0;z-index:10}
.brand{display:flex;align-items:center;gap:12px;min-width:220px}.brand.big{margin-bottom:28px}.brandmark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(145deg,var(--accent),var(--accent2));color:#fff;font-weight:900;box-shadow:0 8px 22px rgba(47,125,246,.25)}
.brand b{display:block;letter-spacing:.4px}.brand small{display:block;color:var(--muted);font-size:11px;margin-top:3px}
.global-search{flex:1;max-width:700px;height:42px;border:1px solid var(--line);background:var(--panel2);border-radius:10px;display:flex;align-items:center;padding:0 12px}.global-search input{width:100%;border:0;outline:0;background:transparent;color:var(--text);padding:0 10px}
.top-actions{margin-left:auto;display:flex;align-items:center;gap:14px}.top-actions button,.hamb{background:transparent;color:var(--text);border:1px solid var(--line);border-radius:9px;padding:8px 10px}.top-actions a{color:var(--muted);font-size:13px}.user{font-size:13px}.hamb{display:none}
.shell{display:flex;min-height:calc(100vh - 72px)}.sidebar{width:250px;padding:20px 16px;border-right:1px solid var(--line);background:var(--panel);display:flex;flex-direction:column;gap:18px}.compose-btn,.primary.linkbtn{display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(145deg,var(--accent),var(--accent2));color:#fff;border-radius:9px;padding:12px 16px;font-weight:700}
.nav-item{display:flex;gap:12px;align-items:center;padding:10px 12px;border-radius:8px;color:var(--muted);margin:2px 0}.nav-item:hover,.nav-item.active{background:rgba(47,125,246,.12);color:var(--text)}.nav-item.active{box-shadow:inset 2px 0 var(--accent)}
.side-section{border-top:1px solid var(--line);padding-top:18px}.side-title{display:flex;justify-content:space-between;font-size:11px;letter-spacing:.15em;color:var(--muted);margin-bottom:10px}.side-title a{font-size:18px;letter-spacing:0}.acct{display:flex;align-items:center;gap:10px;padding:8px;border-radius:8px}.acct:hover{background:var(--panel2)}.acct b,.acct small{display:block}.acct b{font-size:13px}.acct small{font-size:11px;color:var(--muted);margin-top:2px}.dot{width:9px;height:9px;border-radius:50%;background:var(--accent)}.sidebar-bottom{margin-top:auto}
.content{flex:1;padding:28px;min-width:0}.pagehead{display:flex;align-items:end;justify-content:space-between;margin-bottom:22px}.pagehead h1{margin:3px 0 0;font-size:30px}.eyebrow{font-size:11px;font-weight:800;letter-spacing:.18em;color:var(--accent2)}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:20px}.panel h2{margin-top:0}.panel-title{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding:0 4px 14px}.panel-title span{color:var(--muted);font-size:13px}
.mailgrid{display:grid;grid-template-columns:minmax(330px,42%) 1fr;gap:18px}.inbox{padding:10px}.mailrow{display:grid;grid-template-columns:42px 1fr auto;gap:11px;align-items:center;padding:12px;border-bottom:1px solid var(--line);border-radius:9px}.mailrow:hover{background:var(--panel2)}.mailrow b,.mailrow span{display:block}.mailrow span{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:360px}.mailrow time{font-size:11px;color:var(--muted)}.avatar{width:38px;height:38px;border-radius:50%;background:var(--panel2);display:grid;place-items:center;color:var(--accent2);font-size:11px;font-weight:800}.message{min-height:500px}.message-head{padding-bottom:14px;border-bottom:1px solid var(--line)}.message-head h2{margin:0 0 8px}.message-body{white-space:pre-wrap;word-break:break-word;font-family:inherit;line-height:1.6;color:var(--text);max-height:65vh;overflow:auto}
.form label{display:block;font-size:12px;color:var(--muted);margin-bottom:14px}.form input,.form select,.form textarea{width:100%;margin-top:6px;background:var(--panel2);border:1px solid var(--line);color:var(--text);border-radius:8px;padding:10px 11px;outline:none}.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--accent)}.editor{min-height:280px}.check{display:flex!important;align-items:center;gap:8px}.check input{width:auto!important;margin:0!important}.primary{background:linear-gradient(145deg,var(--accent),var(--accent2));color:#fff;border:0;border-radius:9px;padding:11px 17px;font-weight:800}.danger{border:1px solid rgba(240,90,103,.4);background:transparent;color:var(--danger);border-radius:8px;padding:7px 10px}.ghost,.tick{border:0;background:transparent;color:var(--muted);font-size:18px}
.twocol{display:grid;grid-template-columns:1fr 1fr;gap:18px}.grid3{display:grid;grid-template-columns:1fr 90px 130px;gap:10px}.account-card,.listrow{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:13px 4px}.account-card b,.account-card small,.listrow b,.listrow small{display:block}.account-card small,.listrow small{color:var(--muted);font-size:12px;margin-top:4px}.listrow.task{justify-content:flex-start;gap:10px}.listrow.task>div{flex:1}.task.done b{text-decoration:line-through;color:var(--muted)}.note{padding:14px;border:1px solid var(--line);border-radius:10px;background:var(--panel2);margin-bottom:12px}.note h3{margin:0 0 8px}.note p{color:var(--muted);line-height:1.55}.alert{padding:12px 14px;border-radius:9px;margin-bottom:16px}.alert.error{background:rgba(240,90,103,.12);border:1px solid rgba(240,90,103,.35);color:#ff9da7}.alert.success{background:rgba(85,201,137,.12);border:1px solid rgba(85,201,137,.35);color:#8fe2b3}.muted{color:var(--muted)}.empty{padding:30px;text-align:center;color:var(--muted)}.hero{min-height:65vh;display:grid;place-items:center;text-align:center}.hero>div{max-width:700px}.hero h1{font-size:46px;line-height:1.05;margin:10px 0 16px}.hero p{font-size:18px;color:var(--muted);line-height:1.55;margin-bottom:28px}.diagrow{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--line)}.ok{color:var(--ok)}.bad{color:var(--danger)}
.login,.setup{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 50% 20%,rgba(47,125,246,.16),transparent 34%),var(--bg)}.login-card,.setup-card{width:min(460px,100%);padding:30px;background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.login-card label,.setup-card label{display:block;color:var(--muted);font-size:12px;margin:13px 0}.login-card input,.setup-card input{width:100%;margin-top:6px;padding:12px;border:1px solid var(--line);background:var(--panel2);color:var(--text);border-radius:9px}.login-card .primary,.setup-card .primary{width:100%;margin-top:10px}.diag{display:grid;gap:6px;border-top:1px solid var(--line);margin-top:24px;padding-top:18px;color:var(--muted);font-size:12px}.diag b{color:var(--text);margin-bottom:6px}
@media(max-width:1000px){.twocol{grid-template-columns:1fr}.mailgrid{grid-template-columns:1fr}.message{min-height:300px}.global-search{display:none}.sidebar{position:fixed;left:-270px;top:72px;bottom:0;z-index:9;transition:.2s}.sidebar.open{left:0}.hamb{display:block}.brand{min-width:auto}.user{display:none}.content{padding:20px}.grid3{grid-template-columns:1fr}.hero h1{font-size:36px}}
@media(max-width:620px){.topbar{padding:0 12px;gap:10px}.brand small{display:none}.top-actions{gap:6px}.content{padding:14px}.pagehead h1{font-size:25px}.panel{padding:14px}.hero h1{font-size:31px}.mailrow{grid-template-columns:34px 1fr}.mailrow time{display:none}}
/* Integra Internet corporate identity — exact user-provided logo */
.integra-logo{
  display:block;
  width:auto;
  max-width:100%;
  object-fit:contain;
}
.header-logo{
  width:150px;
  height:42px;
  object-position:left center;
}
.login-logo{
  width:220px;
  height:auto;
  max-height:72px;
  object-position:left center;
}
.setup-logo{
  width:220px;
  height:auto;
  max-height:72px;
  object-position:left center;
}
.brand-copy{
  padding-left:2px;
}
@media(max-width:760px){
  .header-logo{width:122px;height:38px}
  .topbar .brand-copy{display:none}
}
/* V0.4 — hard containment for the corporate logo */
.topbar .brand{
  width:230px;
  min-width:230px;
  height:54px;
  overflow:hidden;
}
.topbar .integra-logo.header-logo{
  display:block !important;
  width:150px !important;
  min-width:0 !important;
  max-width:150px !important;
  height:38px !important;
  max-height:38px !important;
  object-fit:contain !important;
  object-position:left center !important;
  flex:0 0 150px !important;
}
.login-card .integra-logo,
.setup-card .integra-logo{
  width:220px !important;
  max-width:220px !important;
  height:auto !important;
  max-height:72px !important;
  object-fit:contain !important;
  object-position:left center !important;
}
@media(max-width:760px){
  .topbar .brand{
    width:145px;
    min-width:145px;
    height:48px;
  }
  .topbar .integra-logo.header-logo{
    width:125px !important;
    max-width:125px !important;
    height:34px !important;
    max-height:34px !important;
    flex-basis:125px !important;
  }
}