:root{
  --bg-0:#040c1c; --bg-1:#0a1c42; --bg-2:#0d234f; --bg-3:#122c5e;
  --line:rgba(255,255,255,.1); --text-1:#fff; --text-2:#b7c4de; --text-3:#7f8cab;
  --blue:#2e83ff; --cyan:#3ddcff; --gold:#ffd700; --orange:#ff8c1e;
  --red:#ff5d5d; --green:#22c55e;
  --radius:12px;
}
*{box-sizing:border-box}
body{
  margin:0; min-height:100vh; background:var(--bg-0); color:var(--text-1);
  font-family:'Plus Jakarta Sans',system-ui,-apple-system,Segoe UI,sans-serif;
}
input,select,textarea,button{font-family:inherit}
h1,h2,h3{margin:0 0 6px}
.muted{color:var(--text-3); font-size:.88rem; line-height:1.55}
code{background:rgba(255,255,255,.08); padding:1px 6px; border-radius:5px; font-size:.85em}

/* ── buttons / fields ── */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:6px;
  padding:10px 18px; border-radius:10px; font-weight:700; font-size:.88rem;
  cursor:pointer; border:1px solid transparent; transition:transform .15s,background .2s;
}
.btn:active{transform:scale(.97)}
.btn-primary{background:linear-gradient(135deg,var(--blue),var(--cyan)); color:#fff;}
.btn-ghost{background:rgba(255,255,255,.06); border-color:var(--line); color:var(--text-1);}
.btn-danger{background:rgba(255,93,93,.14); border-color:rgba(255,93,93,.4); color:#ff9b9b;}
.btn-block{width:100%}
.btn-sm{padding:6px 12px; font-size:.78rem}

.field{display:flex; flex-direction:column; gap:6px; margin-bottom:14px; font-size:.85rem}
.field span{color:var(--text-2); font-weight:700; letter-spacing:.02em}
input[type=text],input[type=password],input[type=number],textarea,select{
  background:var(--bg-2); border:1px solid var(--line); color:var(--text-1);
  padding:10px 12px; border-radius:9px; font-size:.9rem; width:100%;
}
textarea{resize:vertical; line-height:1.5}
input:focus,textarea:focus,select:focus{outline:none; border-color:var(--blue)}
.check-row{display:flex; align-items:center; gap:8px; margin:8px 0 16px; font-size:.88rem; 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:radial-gradient(ellipse 70% 55% at 8% 20%, rgba(46,131,255,.18) 0%, transparent 55%), var(--bg-0);
}
.login-card{
  width:100%; max-width:360px; background:var(--bg-1); border:1px solid var(--line);
  border-radius:16px; padding:28px 26px; text-align:center; box-shadow:0 24px 60px rgba(0,0,0,.5);
}
.login-logo{height:44px; margin-bottom:14px}
.login-sub{color:var(--text-3); font-size:.85rem; margin:0 0 18px}
.login-hint{color:var(--text-3); font-size:.72rem; margin-top:14px; line-height:1.5}
.form-error{
  background:rgba(255,93,93,.12); border:1px solid rgba(255,93,93,.35); color:#ff9b9b;
  padding:8px 10px; border-radius:8px; font-size:.8rem; margin-bottom:14px; text-align:left;
}

/* ── shell layout ── */
.login-screen[hidden],
.shell[hidden]{display:none}
.shell{display:flex; min-height:100vh}
.sidebar{
  width:250px; flex:0 0 250px; background:var(--bg-1); border-right:1px solid var(--line);
  display:flex; flex-direction:column; position:sticky; top:0; height:100vh;
}
.sidebar-brand{display:flex; align-items:center; gap:10px; padding:18px 16px; border-bottom:1px solid var(--line)}
.sidebar-brand img{height:28px}
.sidebar-brand span{font-weight:800; color:var(--text-2); font-size:.8rem; letter-spacing:.08em; text-transform:uppercase}
.sidebar-nav{display:flex; flex-direction:column; gap:2px; padding:12px; flex:1; overflow-y:auto}
.nav-item{
  text-align:left; background:transparent; border:1px solid transparent; color:var(--text-2);
  padding:11px 12px; border-radius:9px; font-size:.86rem; font-weight:600; cursor:pointer;
  transition:background .15s,color .15s;
}
.nav-item:hover{background:rgba(255,255,255,.05); color:#fff}
.nav-item.active{background:rgba(46,131,255,.18); border-color:rgba(46,131,255,.35); color:#fff}
.sidebar-bottom{padding:14px; border-top:1px solid var(--line)}
.who{display:flex; flex-direction:column; margin-bottom:10px; font-size:.82rem}
.who strong{color:#fff}
.who span{color:var(--text-3); text-transform:capitalize; font-size:.72rem}

.content{flex:1; padding:26px 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; color:var(--text-2); font-size:.9rem}

.cards-row{display:grid; grid-template-columns:repeat(auto-fit,minmax(140px,1fr)); gap:12px; margin-top:18px}
.stat-card{background:var(--bg-1); border:1px solid var(--line); border-radius:12px; padding:16px}
.stat-card strong{display:block; font-size:1.6rem}
.stat-card span{color:var(--text-3); font-size:.76rem; text-transform:uppercase; letter-spacing:.04em}

.stack{display:flex; flex-direction:column; gap:10px; margin:14px 0}
.row-card{
  background:var(--bg-1); border:1px solid var(--line); border-radius:var(--radius);
  padding:14px 16px; display:flex; flex-direction:column; gap:10px;
}
.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:.75rem; color:var(--text-3)}
.remove-btn{
  background:rgba(255,93,93,.12); border:1px solid rgba(255,93,93,.3); color:#ff9b9b;
  width:32px; height:32px; border-radius:8px; cursor:pointer; flex:0 0 auto;
}

.text-group{background:var(--bg-1); border:1px solid var(--line); border-radius:var(--radius); margin-bottom:14px; overflow:hidden}
.text-group summary{padding:12px 16px; cursor:pointer; font-weight:700; font-size:.86rem; color:var(--text-2)}
.text-group .text-group-body{padding:4px 16px 16px}

.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}

.user-row{
  display:flex; align-items:center; justify-content:space-between; gap:10px;
  background:var(--bg-1); border:1px solid var(--line); border-radius:10px; padding:12px 14px;
}
.user-row .u-name{font-weight:700}
.user-row .u-role{color:var(--text-3); font-size:.76rem; text-transform:capitalize; margin-left:8px}

.toast{
  position:fixed; top:18px; right:18px; z-index:50; padding:12px 18px; border-radius:10px;
  font-size:.86rem; font-weight:700; box-shadow:0 12px 30px rgba(0,0,0,.4);
}
.toast.ok{background:rgba(34,197,94,.16); border:1px solid rgba(34,197,94,.4); color:#7ef2a8}
.toast.err{background:rgba(255,93,93,.16); border:1px solid rgba(255,93,93,.4); color:#ff9b9b}

@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}
  .sidebar-nav{flex-direction:row; flex-wrap:wrap; overflow:visible}
  .sidebar-bottom{margin-left:auto; border-top:none; display:flex; align-items:center; gap:10px; padding:12px 16px}
  .who{margin-bottom:0}
  .content{padding:18px}
}