:root{
  --bg-page:#f8fafc; --bg-card:#fff; --bg-soft:#f1f5f9; --bg-active:#0f172a;
  --border:#e2e8f0; --border-soft:#f1f5f9;
  --text-1:#0f172a; --text-2:#475569; --text-3:#64748b; --text-4:#94a3b8;
  --accent:#1a6ef5; --accent-soft:#eff6ff;
  --gold:#eab308;
  --danger:#dc2626; --danger-soft:#fef2f2; --danger-border:#fecaca;
  --ok:#059669; --ok-soft:#ecfdf5; --ok-border:#a7f3d0;
  --radius-lg:16px; --radius-md:12px; --radius-sm:8px;
  --shadow-card:0 1px 2px rgba(15,23,42,.04);
}
*{box-sizing:border-box}
body{
  margin:0; min-height:100vh; background:var(--bg-page); color:var(--text-1);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:14px;
}
input,select,textarea,button{font-family:inherit}
h1,h2,h3{margin:0 0 4px; color:var(--text-1)}
h2{font-size:1.25rem; font-weight:800; letter-spacing:-0.01em}
h3{font-size:.8rem; font-weight:800; color:var(--text-2)}
.muted{color:var(--text-3); font-size:.85rem; line-height:1.55}
code{background:var(--bg-soft); padding:1px 6px; border-radius:5px; font-size:.85em; color:var(--text-2)}

/* ── buttons / fields ── */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:6px;
  padding:9px 16px; border-radius:var(--radius-sm); font-weight:700; font-size:.84rem;
  cursor:pointer; border:1px solid transparent; transition:background .15s,border-color .15s,opacity .15s;
}
.btn:active{opacity:.85}
.btn-primary{background:var(--bg-active); color:#fff;}
.btn-primary:hover{background:#1e293b}
.btn-ghost{background:var(--bg-soft); border-color:var(--border); color:var(--text-2);}
.btn-ghost:hover{background:#e5e9f0}
.btn-danger{background:var(--danger-soft); border-color:var(--danger-border); color:var(--danger);}
.btn-danger:hover{background:#fde8e8}
.btn-block{width:100%}
.btn-sm{padding:5px 11px; font-size:.76rem}

.field{display:flex; flex-direction:column; gap:6px; margin-bottom:14px; font-size:.85rem}
.field span{color:var(--text-2); font-weight:700; font-size:.78rem}
.field-preview{color:var(--ok); font-size:.72rem; font-weight:600; margin-top:-2px}
input[type=text],input[type=password],input[type=number],textarea,select{
  background:#fff; border:1px solid var(--border); color:var(--text-1);
  padding:9px 12px; border-radius:var(--radius-sm); font-size:.87rem; width:100%;
}
textarea{resize:vertical; line-height:1.5}
input:focus,textarea:focus,select:focus{outline:none; border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-soft)}
input::placeholder,textarea::placeholder{color:var(--text-4)}
.check-row{display:flex; align-items:center; gap:8px; margin:8px 0 16px; font-size:.86rem; color:var(--text-2)}
.check-row input{width:auto}

/* ── login ── */
.login-screen{
  min-height:100vh; display:flex; align-items:center; justify-content:center; padding:20px;
  background:var(--bg-page);
}
.login-screen[hidden],
.shell[hidden]{display:none}
.login-card{
  width:100%; max-width:360px; background:var(--bg-card); border:1px solid var(--border);
  border-radius:var(--radius-lg); padding:28px 26px; text-align:left; box-shadow:0 1px 3px rgba(15,23,42,.06);
}
.login-logo{height:32px; margin-bottom:16px; display:block}
.login-card h1{font-size:1.15rem; font-weight:800}
.login-sub{color:var(--text-3); font-size:.82rem; margin:0 0 18px}
.login-hint{color:var(--text-4); font-size:.72rem; margin-top:14px; line-height:1.5}
.form-error{
  background:var(--danger-soft); border:1px solid var(--danger-border); color:var(--danger);
  padding:8px 10px; border-radius:var(--radius-sm); font-size:.8rem; margin-bottom:14px; text-align:left;
}

/* ── shell layout ── */
.shell{display:flex; min-height:100vh}
.sidebar{
  width:240px; flex:0 0 240px; background:var(--bg-card); border-right:1px solid var(--border);
  display:flex; flex-direction:column; position:sticky; top:0; height:100vh;
}
.sidebar-brand{display:flex; align-items:center; gap:8px; padding:16px}
.sidebar-brand img{height:24px}
.sidebar-brand span{font-weight:800; color:var(--text-4); font-size:.7rem; letter-spacing:.08em; text-transform:uppercase}
.sidebar-nav{display:flex; flex-direction:column; gap:2px; padding:8px; flex:1; overflow-y:auto}
.nav-eyebrow{padding:14px 12px 4px; margin:0; font-size:.62rem; font-weight:800; letter-spacing:.08em; text-transform:uppercase; color:var(--text-4)}
.nav-item{
  display:flex; align-items:center; gap:9px;
  text-align:left; background:transparent; border:1px solid transparent; color:var(--text-2);
  padding:8px 10px; border-radius:var(--radius-sm); font-size:.85rem; font-weight:600; cursor:pointer;
  transition:background .15s,color .15s;
}
.nav-item span:first-child{width:16px; text-align:center; flex:0 0 auto}
.nav-item:hover{background:var(--bg-soft); color:var(--text-1)}
.nav-item.active{background:var(--bg-active); color:#fff}
.sidebar-bottom{padding:12px; border-top:1px solid var(--border)}
.who{display:flex; flex-direction:column; margin-bottom:10px; font-size:.82rem; padding:0 2px}
.who strong{color:var(--text-1); font-weight:700}
.who span{color:var(--text-4); text-transform:uppercase; font-size:.66rem; font-weight:800; letter-spacing:.04em}

.content{flex:1; padding:28px 32px 80px; max-width:900px}
.panel-head{display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:6px; flex-wrap:wrap}
.sub-h{margin-top:22px}

.cards-row{display:grid; grid-template-columns:repeat(auto-fit,minmax(140px,1fr)); gap:12px; margin-top:18px}
.stat-card{background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius-lg); padding:16px; box-shadow:var(--shadow-card)}
.stat-card strong{display:block; font-size:1.5rem; font-weight:800; color:var(--text-1)}
.stat-card span{color:var(--text-3); font-size:.72rem; text-transform:uppercase; letter-spacing:.04em; font-weight:700}

.stack{display:flex; flex-direction:column; gap:10px; margin:14px 0}
.stack-tight{gap:4px}
.list-row{
  display:flex; align-items:center; gap:8px;
  padding:5px 6px 5px 10px; border-radius:var(--radius-sm);
  transition:background .1s;
}
.list-row:hover{background:var(--bg-soft)}
.list-row input{flex:1; padding:6px 10px; font-size:.85rem}
.remove-btn-sm{width:26px; height:26px; font-size:.72rem; flex:0 0 auto}
.row-card{
  background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius-lg);
  padding:14px 16px; display:flex; flex-direction:column; gap:10px; box-shadow:var(--shadow-card);
}
.row-card .row-top{display:flex; align-items:center; gap:10px}
.row-card .row-top input[type=text]{flex:1}
.row-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(120px,1fr)); gap:10px}
.row-grid label{display:flex; flex-direction:column; gap:4px; font-size:.72rem; color:var(--text-3); font-weight:700}
.remove-btn{
  background:var(--danger-soft); border:1px solid var(--danger-border); color:var(--danger);
  width:30px; height:30px; border-radius:var(--radius-sm); cursor:pointer; flex:0 0 auto;
  font-size:.85rem; line-height:1;
}
.remove-btn:hover{background:#fde2e2}

.text-group{background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius-lg); margin-bottom:12px; overflow:hidden; box-shadow:var(--shadow-card)}
.text-group summary{padding:12px 16px; cursor:pointer; font-weight:700; font-size:.85rem; color:var(--text-2); list-style:none}
.text-group summary::-webkit-details-marker{display:none}
.text-group summary::before{content:"▸"; display:inline-block; margin-right:8px; color:var(--text-4); transition:transform .15s}
.text-group[open] summary::before{transform:rotate(90deg)}
.text-group .text-group-body{padding:4px 16px 16px; border-top:1px solid var(--border-soft)}

.inline-form{display:flex; gap:8px; flex-wrap:wrap; align-items:center}
.inline-form input{width:auto; flex:1; min-width:140px}
.inline-form select{width:auto}

.audit-row{
  display:grid; grid-template-columns:150px 130px 1fr; gap:12px; align-items:start;
  padding:10px 12px; border-bottom:1px solid var(--border-soft); font-size:.82rem;
}
.audit-row:first-child{border-top:1px solid var(--border-soft)}
.audit-when{color:var(--text-4); font-size:.76rem; white-space:nowrap}
.audit-who{font-weight:700; color:var(--text-1)}
.audit-role{display:inline-block; margin-left:4px; padding:1px 6px; border-radius:999px; background:var(--bg-soft); color:var(--text-3); font-size:.64rem; font-weight:800; text-transform:uppercase; vertical-align:middle}
.audit-what strong{color:var(--text-1); font-weight:700}
.audit-details{display:block; color:var(--text-3); font-size:.78rem; margin-top:2px; word-break:break-word}
@media (max-width:700px){
  .audit-row{grid-template-columns:1fr; gap:2px}
}

.user-row{
  display:flex; align-items:center; justify-content:space-between; gap:10px;
  background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius-md); padding:12px 14px;
  box-shadow:var(--shadow-card);
}
.user-row .u-name{font-weight:700; font-family:ui-monospace,Consolas,monospace}
.user-row .u-role{color:var(--text-4); font-size:.7rem; font-weight:800; text-transform:uppercase; letter-spacing:.04em; margin-left:8px}

.toast{
  position:fixed; top:18px; right:18px; z-index:50; padding:11px 16px; border-radius:var(--radius-md);
  font-size:.85rem; font-weight:700; box-shadow:0 8px 24px rgba(15,23,42,.12);
}
.toast.ok{background:var(--ok-soft); border:1px solid var(--ok-border); color:var(--ok)}
.toast.err{background:var(--danger-soft); border:1px solid var(--danger-border); color:var(--danger)}

@media (max-width:820px){
  .shell{flex-direction:column}
  .sidebar{width:100%; flex:none; height:auto; position:relative; flex-direction:row; flex-wrap:wrap; align-items:center; border-right:none; border-bottom:1px solid var(--border)}
  .sidebar-nav{flex-direction:row; flex-wrap:nowrap; overflow-x:auto; overflow-y:visible}
  .nav-eyebrow{display:none}
  .sidebar-bottom{margin-left:auto; border-top:none; display:flex; align-items:center; gap:10px; padding:10px 16px}
  .who{margin-bottom:0}
  .content{padding:18px}
}