:root{
  --ink:#1f1d1b; --muted:#71767c; --faint:#9aa0a6; --line:#ebecee; --bg:#f7f8fa;
  --coral:#E8463C; --pink:#E25FA1; --grad:linear-gradient(135deg,#E8463C,#E25FA1);
  --sidebar:256px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);
  background:var(--bg);font-size:14px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}

.app{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar);background:#fff;border-right:1px solid var(--line);
  position:fixed;inset:0 auto 0 0;display:flex;flex-direction:column;overflow-y:auto}
.main{flex:1;margin-left:var(--sidebar);display:flex;flex-direction:column;min-width:0}
.content{padding:28px 32px;flex:1;max-width:1200px;width:100%}

/* brand */
.brand{padding:24px 22px 18px;border-bottom:1px solid var(--line)}
.brand img{height:28px;display:block}
.brand small{display:block;color:var(--faint);font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;margin-top:11px;font-weight:600}

/* nav — text only */
.nav{padding:14px 14px 28px}
.nav .group{margin-top:20px}
.nav .group:first-child{margin-top:4px}
.nav .group>span{display:block;padding:0 12px 8px;font-size:10.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--faint);font-weight:700}
.nav a{display:block;padding:9px 13px;border-radius:9px;color:#4a4f55;font-weight:500;
  margin-bottom:1px;position:relative;transition:background .12s,color .12s}
.nav a:hover{background:#f3f4f6;color:var(--ink)}
.nav a.active{background:linear-gradient(135deg,rgba(232,70,60,.09),rgba(226,95,161,.10));
  color:var(--ink);font-weight:600}
.nav a.active::before{content:"";position:absolute;left:-14px;top:7px;bottom:7px;width:3px;
  border-radius:0 4px 4px 0;background:var(--grad)}

/* topbar */
.topbar{height:64px;background:rgba(255,255,255,.85);backdrop-filter:saturate(1.8) blur(8px);
  border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;
  padding:0 32px;position:sticky;top:0;z-index:5}
.topbar .left{display:flex;align-items:center;gap:14px}
.topbar h1{font-size:18px;margin:0;font-weight:650;letter-spacing:-.01em}
.topbar .right{display:flex;align-items:center;gap:18px}
.chip{font-size:11px;font-weight:700;padding:4px 11px;border-radius:999px;letter-spacing:.04em}
.user{display:flex;align-items:center;gap:10px}
.user .meta{line-height:1.2;text-align:right}
.user .meta b{display:block;color:var(--ink);font-weight:600;font-size:13px}
.user .meta span{color:var(--muted);font-size:12px}
.user .av{width:34px;height:34px;border-radius:50%;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.logout{color:var(--muted);font-weight:600;font-size:13px}
.logout:hover{color:var(--coral)}
.menu-toggle{display:none;background:none;border:0;cursor:pointer;font-weight:600;
  font-size:14px;color:var(--ink);padding:0}

/* headings */
.page-intro{margin:2px 0 22px;color:var(--muted);font-size:15px}
h2.section{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--faint);
  margin:32px 0 14px;font-weight:700}

/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;
  transition:box-shadow .15s,transform .15s}
.card:hover{box-shadow:0 6px 24px rgba(25,25,40,.06)}
.card h3{margin:0 0 8px;font-size:11.5px;color:var(--muted);font-weight:600;
  text-transform:uppercase;letter-spacing:.05em}
.card .v{font-size:28px;font-weight:700;letter-spacing:-.02em}
.card .v small{font-size:14px;color:var(--muted);font-weight:500}
.card .v.empty-v{font-size:15px;color:var(--faint);font-weight:500}

/* empty / soon */
.empty{background:#fff;border:1px solid var(--line);border-radius:16px;padding:64px 28px;
  text-align:center;background-image:radial-gradient(900px 300px at 50% -40%,rgba(232,70,60,.05),transparent)}
.empty .big{font-size:20px;color:var(--ink);font-weight:650;margin-bottom:8px}
.empty p{color:var(--muted);margin:0 auto;max-width:420px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;
  border-radius:9px;font-weight:600;font-size:14px;border:0;cursor:pointer;transition:filter .12s}
.btn.primary{background:var(--grad);color:#fff}
.btn.primary:hover{filter:brightness(1.06)}
.btn.ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}
.btn.ghost:hover{border-color:#d6d8db}

/* login */
.login{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(1100px 540px at 50% -20%,rgba(232,70,60,.07),transparent),var(--bg)}
.login .box{background:#fff;border:1px solid var(--line);border-radius:18px;padding:44px;
  width:372px;text-align:center;box-shadow:0 16px 50px rgba(20,20,40,.08)}
.login img{height:40px;margin-bottom:12px}
.login h1{font-size:17px;margin:0 0 3px;font-weight:650}
.login .sub{color:var(--muted);margin:0 0 28px;font-size:13.5px}
.login .btn.primary{width:100%;padding:13px}

/* tenant switcher */
.ctx-switch select{appearance:none;-webkit-appearance:none;background:#fff;border:1px solid var(--line);
  border-radius:9px;padding:8px 32px 8px 13px;font:inherit;font-weight:600;color:var(--ink);cursor:pointer;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2371767c' stroke-width='2.5' stroke-linecap='round'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat:no-repeat;background-position:right 11px center}
.ctx-switch select:hover{border-color:#d6d8db}

/* tables */
.table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);
  border-radius:14px;overflow:hidden}
.table th,.table td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--line);font-size:13.5px;vertical-align:middle}
.table th{background:#fafbfc;color:var(--muted);font-weight:700;font-size:11px;text-transform:uppercase;letter-spacing:.05em}
.table tbody tr:last-child td{border-bottom:0}
.table tbody tr:hover{background:#fcfcfd}
.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:11.5px;font-weight:700}
.badge.role-admin{background:#eef0ff;color:#3b46c4}
.badge.role-operator{background:#eef6f0;color:#2f7a4d}
.badge.role-viewer{background:#fbf0e8;color:#a8632a}
.badge.on{background:#e6f6ec;color:#1f9d57}
.badge.off{background:#f1f2f4;color:#8a9097}

/* forms */
.form{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;margin-bottom:26px}
.form .row{display:flex;gap:18px;flex-wrap:wrap}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:6px}
.field>label{font-size:12px;font-weight:600;color:var(--muted)}
.field input[type=text],.field input[type=email],.field select{border:1px solid var(--line);
  border-radius:9px;padding:10px 12px;font:inherit;min-width:240px;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus{outline:0;border-color:var(--pink);box-shadow:0 0 0 3px rgba(226,95,161,.12)}
.checks{display:flex;flex-wrap:wrap;gap:10px}
.checks label{display:flex;align-items:center;gap:7px;font-weight:500;background:#f7f8fa;
  border:1px solid var(--line);padding:8px 12px;border-radius:9px;font-size:13px;cursor:pointer}
.muted{color:var(--muted)}

/* inline action buttons (link-style) */
.linkbtn{background:none;border:0;padding:0;margin-right:12px;cursor:pointer;font:inherit;
  font-weight:600;font-size:13px;color:var(--muted)}
.linkbtn:hover{color:var(--ink)}
.linkbtn.danger:hover{color:var(--coral)}
.actions-inline a{margin-right:12px;font-weight:600;font-size:13px;color:var(--muted)}
.actions-inline a:hover{color:var(--ink)}

/* flash */
.flash{background:#e9f7ee;border:1px solid #bfe6cd;color:#1f7a47;padding:11px 15px;
  border-radius:10px;margin-bottom:18px;font-size:13.5px;font-weight:500}
.flash.err{background:#fdecea;border-color:#f5c4c0;color:#b3261e}

/* responsive */
.backdrop{display:none}
@media(max-width:900px){
  .sidebar{transform:translateX(-100%);transition:transform .2s ease;z-index:20}
  body.nav-open .sidebar{transform:none}
  .main{margin-left:0}
  .menu-toggle{display:inline-flex}
  body.nav-open .backdrop{display:block;position:fixed;inset:0;background:rgba(0,0,0,.32);z-index:15}
}