:root{
  --bg:#ffffff;
  --surface:#ffffff;
  --surface-2:#f7f8fa;
  --surface-3:#eef0f4;
  --border:#e5e7eb;
  --border-strong:#d1d5db;
  --text:#0f172a;
  --text-muted:#64748b;
  --text-soft:#94a3b8;
  --primary:#0b66ff;
  --primary-600:#0a58dc;
  --primary-50:#eaf2ff;
  --success:#16a34a;
  --warning:#f59e0b;
  --danger:#ef4444;
  --info:#0ea5e9;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06);
  --shadow-md:0 6px 24px rgba(15,23,42,.08);
  --radius:10px;
  --radius-sm:8px;
  --sidebar-w:264px;
  --topbar-h:60px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:14px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;display:block}
hr{border:0;border-top:1px solid var(--border);margin:8px 0}

/* ── LOGIN ──────────────────────────────────────────────────────────── */
.login-overlay{position:fixed;inset:0;background:linear-gradient(180deg,#fff,#f4f7fb);display:flex;align-items:center;justify-content:center;z-index:1000;padding:24px}
.login-card{width:100%;max-width:380px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:28px;box-shadow:var(--shadow-md)}
.login-brand{text-align:center;margin-bottom:18px}
.login-brand h1{margin:8px 0 2px;font-size:22px;letter-spacing:-.01em}
.login-brand p{margin:0;color:var(--text-muted);font-size:13px}
.brand-dot{display:inline-block;width:14px;height:14px;border-radius:4px;background:linear-gradient(135deg,#fcd34d,#f59e0b 40%,#ef4444 80%);box-shadow:inset 0 0 0 2px #fff,0 1px 4px rgba(0,0,0,.15);vertical-align:middle}
.field{display:block;margin:14px 0}
.field>span{display:block;font-size:12px;color:var(--text-muted);margin-bottom:6px;font-weight:500}
.field>input,.field>select,.field>textarea{display:block;width:100%;border:1px solid var(--border-strong);background:#fff;border-radius:var(--radius-sm);padding:10px 12px;outline:none;transition:border-color .15s,box-shadow .15s}
.field>input:focus,.field>select:focus,.field>textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-50)}
.check{display:flex;align-items:center;gap:8px;color:var(--text-muted);font-size:13px;margin:6px 0 14px}
.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--border-strong);background:#fff;color:var(--text);padding:9px 14px;border-radius:var(--radius-sm);font-weight:500;transition:background .15s,border-color .15s,transform .05s}
.btn:hover{background:var(--surface-2)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-600);border-color:var(--primary-600)}
.btn-danger{color:var(--danger);border-color:#fecaca}
.btn-danger:hover{background:#fef2f2}
.btn-ghost{border-color:transparent;background:transparent}
.btn-block{display:flex;justify-content:center;width:100%}
.btn-sm{padding:6px 10px;font-size:13px}
.login-hint{min-height:18px;color:var(--danger);font-size:13px;margin:10px 0 0;text-align:center}

/* ── APP SHELL ──────────────────────────────────────────────────────── */
.app-shell{display:grid;grid-template-columns:var(--sidebar-w) 1fr;grid-template-rows:var(--topbar-h) 1fr;grid-template-areas:"top top" "side main";min-height:100vh;background:var(--surface-2)}
.topbar{grid-area:top;display:flex;align-items:center;gap:14px;padding:0 18px;background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;letter-spacing:-.01em;font-size:16px;padding-right:8px}
.brand-name span{color:var(--primary)}
.brand-tag{font-size:10.5px;font-weight:700;letter-spacing:.08em;background:var(--surface-3);color:var(--text-muted);padding:3px 7px;border-radius:6px;margin-left:6px;text-transform:uppercase}
.icon-btn{position:relative;display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:8px;color:var(--text-muted);transition:background .12s,color .12s}
.icon-btn:hover{background:var(--surface-2);color:var(--text)}
.sidebar-toggle{display:none}
.topnav{display:flex;align-items:center;gap:2px;margin-left:8px}
.topnav-item{padding:8px 12px;border-radius:8px;color:var(--text-muted);font-weight:500;font-size:13.5px}
.topnav-item:hover{background:var(--surface-2);color:var(--text)}
.topnav-item.active{background:var(--primary-50);color:var(--primary-600)}
.topbar-search{flex:1;max-width:520px;margin:0 auto;display:flex;align-items:center;gap:8px;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:7px 12px;color:var(--text-muted)}
.topbar-search input{flex:1;background:transparent;border:0;outline:none;color:var(--text)}
.topbar-search kbd{font-size:11px;color:var(--text-soft);background:#fff;border:1px solid var(--border);border-radius:5px;padding:1px 6px}
.topbar-actions{display:flex;align-items:center;gap:6px}
.user-menu{position:relative}
.user-chip{display:flex;align-items:center;gap:8px;padding:5px 8px 5px 5px;border-radius:999px;border:1px solid var(--border);background:#fff}
.user-chip:hover{background:var(--surface-2)}
.avatar{width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,#0b66ff,#7c3aed);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:600;font-size:13px}
.user-name{font-size:13.5px;font-weight:500}
.user-dropdown{position:absolute;right:0;top:calc(100% + 6px);min-width:180px;background:#fff;border:1px solid var(--border);border-radius:10px;box-shadow:var(--shadow-md);padding:6px;z-index:60}
.user-dropdown a,.user-dropdown button{display:block;width:100%;text-align:left;padding:8px 10px;border-radius:6px;font-size:13.5px}
.user-dropdown a:hover,.user-dropdown button:hover{background:var(--surface-2)}
.badge{position:absolute;top:4px;right:4px;min-width:16px;height:16px;border-radius:8px;background:var(--danger);color:#fff;font-size:10px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;padding:0 4px}

/* ── SIDEBAR ────────────────────────────────────────────────────────── */
.sidebar{grid-area:side;background:#fff;border-right:1px solid var(--border);padding:14px 10px;overflow-y:auto;display:flex;flex-direction:column;gap:14px}
.sidebar-section{display:flex;flex-direction:column;gap:2px}
.sidebar-title{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-soft);padding:6px 12px}
.side-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:8px;color:var(--text);font-size:13.5px;font-weight:500;transition:background .12s,color .12s}
.side-item svg{color:var(--text-muted)}
.side-item:hover{background:var(--surface-2)}
.side-item.active{background:var(--primary-50);color:var(--primary-600)}
.side-item.active svg{color:var(--primary-600)}
.sidebar-footer{margin-top:auto;padding:12px;border-top:1px solid var(--border);font-size:12px;color:var(--text-muted)}
.sys-status{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--text-soft);display:inline-block}
.dot.ok{background:var(--success);box-shadow:0 0 0 3px rgba(22,163,74,.12)}
.dot.bad{background:var(--danger)}
.ver{color:var(--text-soft);font-size:11px}

/* ── MAIN ───────────────────────────────────────────────────────────── */
.main{grid-area:main;padding:22px clamp(16px,3vw,32px) 40px;min-width:0}
.page-header{display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-bottom:18px}
.page-title{font-size:22px;font-weight:600;letter-spacing:-.01em;margin:0}
.crumbs{color:var(--text-soft);font-size:12.5px;margin:0 0 4px}
.crumbs a:hover{color:var(--text)}
.actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}

/* Cards / panels */
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.card-header{padding:14px 18px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:10px}
.card-title{margin:0;font-size:15px;font-weight:600}
.card-body{padding:18px}
.grid{display:grid;gap:16px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
@media (max-width:1100px){.grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-2{grid-template-columns:1fr}}
@media (max-width:640px){.grid-3,.grid-4,.grid-2{grid-template-columns:1fr}}

/* Stat cards */
.stat{padding:18px;border:1px solid var(--border);border-radius:var(--radius);background:#fff;display:flex;align-items:center;gap:14px}
.stat .ic{width:42px;height:42px;border-radius:10px;background:var(--primary-50);color:var(--primary-600);display:inline-flex;align-items:center;justify-content:center}
.stat .lbl{color:var(--text-muted);font-size:12px;letter-spacing:.04em;text-transform:uppercase;margin:0}
.stat .val{font-size:24px;font-weight:600;letter-spacing:-.02em;margin:2px 0 0}
.stat .delta{font-size:12px;color:var(--success);margin-left:8px}
.stat.warn .ic{background:#fff7ed;color:var(--warning)}
.stat.ok .ic{background:#ecfdf5;color:var(--success)}
.stat.info .ic{background:#ecfeff;color:var(--info)}

/* Table */
.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:var(--radius);background:#fff}
table.table{width:100%;border-collapse:collapse;font-size:13.5px}
table.table th,table.table td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--border);vertical-align:middle}
table.table th{background:var(--surface-2);font-weight:600;color:var(--text-muted);font-size:12px;text-transform:uppercase;letter-spacing:.04em;position:sticky;top:0}
table.table tbody tr:hover{background:var(--surface-2)}
table.table tbody tr:last-child td{border-bottom:0}
.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11.5px;font-weight:600;background:var(--surface-3);color:var(--text-muted);letter-spacing:.02em}
.tag.ok{background:#ecfdf5;color:#047857}
.tag.warn{background:#fffbeb;color:#a16207}
.tag.bad{background:#fef2f2;color:#b91c1c}
.tag.info{background:#eff6ff;color:#1d4ed8}
.row-actions{display:flex;gap:6px;justify-content:flex-end}

/* Filters bar */
.filters{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px}
.filters input[type="search"],.filters select,.filters input[type="text"]{padding:8px 12px;border:1px solid var(--border-strong);background:#fff;border-radius:var(--radius-sm);outline:none;min-width:200px}
.filters input:focus,.filters select:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-50)}

/* Empty / loading */
.empty,.loading{padding:40px 20px;text-align:center;color:var(--text-muted);background:#fff;border:1px dashed var(--border-strong);border-radius:var(--radius)}
.spinner{width:22px;height:22px;border-radius:50%;border:2.5px solid var(--surface-3);border-top-color:var(--primary);animation:spin .7s linear infinite;display:inline-block;vertical-align:middle;margin-right:8px}
@keyframes spin{to{transform:rotate(360deg)}}

/* Forms inside cards */
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
@media (max-width:640px){.form-grid{grid-template-columns:1fr}}
textarea{min-height:90px;resize:vertical}
.help{font-size:12px;color:var(--text-muted);margin:6px 0 0}

/* Notifications list */
.notif-item{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border-bottom:1px solid var(--border)}
.notif-item:last-child{border-bottom:0}
.notif-item .ic{width:32px;height:32px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;background:var(--primary-50);color:var(--primary-600);flex:none}
.notif-item .body{flex:1;min-width:0}
.notif-item .ttl{font-weight:600;margin:0 0 2px}
.notif-item .desc{margin:0;color:var(--text-muted);font-size:13px;white-space:pre-wrap}
.notif-item .meta{font-size:11.5px;color:var(--text-soft);margin-top:4px}
.notif-item.warning .ic{background:#fffbeb;color:#a16207}
.notif-item.alert .ic{background:#fef2f2;color:#b91c1c}

/* Toasts */
.toasts{position:fixed;right:20px;bottom:20px;display:flex;flex-direction:column;gap:10px;z-index:1000}
.toast{background:#0f172a;color:#fff;padding:10px 14px;border-radius:10px;box-shadow:var(--shadow-md);font-size:13.5px;max-width:340px;animation:tin .2s ease}
.toast.ok{background:#065f46}
.toast.err{background:#b91c1c}
@keyframes tin{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* Responsive */
@media (max-width:980px){
  :root{--sidebar-w:0px}
  .topnav{display:none}
  .sidebar-toggle{display:inline-flex}
  .sidebar{position:fixed;inset:var(--topbar-h) auto 0 0;width:280px;transform:translateX(-100%);transition:transform .2s;z-index:40;border-right:1px solid var(--border)}
  .sidebar.open{transform:none;box-shadow:var(--shadow-md)}
  .app-shell{grid-template-columns:1fr}
}
@media (max-width:640px){
  .topbar-search{display:none}
  .brand-tag{display:none}
}