:root{
  --bg:#0b0f14;--panel:#131922;--panel-2:#19212c;--text:#eef4fb;--muted:#8d9aaa;
  --border:#263241;--primary:#20b9ff;--primary-2:#0099dc;--danger:#f05252;
  --success:#23c483;--warning:#f6ad55;--radius:14px
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,Arial,sans-serif;font-size:14px}
a{color:var(--primary);text-decoration:none}
input,select,textarea,button{font:inherit}
input,select,textarea{width:100%;border:1px solid var(--border);border-radius:9px;background:#0e141c;color:var(--text);padding:12px 13px;outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(32,185,255,.12)}
label{display:block;margin:0 0 6px;color:#c8d2de;font-weight:700}
button{cursor:pointer}
.app-shell{min-height:100vh;display:grid;grid-template-columns:250px minmax(0,1fr)}
.sidebar{position:sticky;top:0;height:100vh;border-right:1px solid var(--border);background:#0d1219;padding:20px 15px;display:flex;flex-direction:column}
.brand{display:flex;gap:10px;align-items:center;padding:0 7px 22px;border-bottom:1px solid var(--border)}
.brand-mark,.auth-logo{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#6d5dfc);color:#fff;font-weight:900}
.brand strong,.brand small{display:block}.brand small{margin-top:3px;color:var(--muted);font-size:11px}
.sidebar nav{display:grid;gap:5px;margin-top:20px}
.sidebar nav a,.nav-disabled{padding:12px;border-radius:9px;color:#c7d2de}
.sidebar nav a:hover{background:var(--panel-2);color:#fff}
.nav-disabled{opacity:.45;display:flex;justify-content:space-between}.nav-disabled small{font-size:10px}
.sidebar-footer{margin-top:auto;padding:15px 8px 0;border-top:1px solid var(--border);display:flex;justify-content:space-between}
.main{min-width:0}
.topbar{height:84px;padding:18px 28px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:14px}
.topbar h1{margin:0;font-size:22px}.topbar p{margin:4px 0 0;color:var(--muted)}
.content{padding:28px}
.menu-button{display:none;border:0;background:none;color:#fff;font-size:22px}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-bottom:22px}
.stat-card,.panel{border:1px solid var(--border);border-radius:var(--radius);background:var(--panel)}
.stat-card{padding:20px}.stat-card span{color:var(--muted)}.stat-card strong{display:block;margin-top:10px;font-size:31px}
.panel{overflow:hidden}.panel-header{padding:20px 22px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;gap:15px}
.panel-header h2{margin:0;font-size:18px}.panel-header p{margin:5px 0 0;color:var(--muted)}
.table-responsive{overflow:auto}
table{width:100%;border-collapse:collapse}
th,td{padding:14px 18px;border-bottom:1px solid var(--border);text-align:left;vertical-align:middle}
th{font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
td small{display:block;margin-top:4px;color:var(--muted)}
.empty{text-align:center;color:var(--muted);padding:34px}
.badge{display:inline-flex;padding:5px 9px;border-radius:999px;font-size:11px;font-weight:800}
.badge-ativo{background:rgba(35,196,131,.14);color:#63e6ad}.badge-inativo{background:rgba(246,173,85,.14);color:#ffc078}.badge-bloqueado{background:rgba(240,82,82,.14);color:#ff8787}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 16px;border:1px solid var(--border);border-radius:9px;background:#18212c;color:#eaf2fb;font-weight:800}
.btn-primary{border-color:transparent;background:var(--primary);color:#041018}.btn-primary:hover{background:var(--primary-2);color:#fff}
.filters{display:grid;grid-template-columns:minmax(220px,1fr) 180px auto;gap:10px;padding:16px 20px;border-bottom:1px solid var(--border)}
.actions{display:flex;gap:12px;align-items:center}.actions form{margin:0}.actions button{border:0;background:none;color:#ff8787;padding:0}
.form-panel{max-width:1040px}.form-panel form{padding:22px}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.form-group.full{grid-column:1/-1}
.form-actions{margin-top:20px;display:flex;justify-content:flex-end;gap:10px}
.alert{margin:15px 20px;padding:13px 15px;border-radius:9px}.alert-error{background:rgba(240,82,82,.14);color:#ffb3b3;border:1px solid rgba(240,82,82,.28)}.alert-success{background:rgba(35,196,131,.14);color:#9bf6cf;border:1px solid rgba(35,196,131,.28)}
.pagination{padding:18px;display:flex;gap:7px}.pagination a{padding:7px 10px;border:1px solid var(--border);border-radius:7px;color:#dce7f2}.pagination a.active{background:var(--primary);color:#031019;border-color:var(--primary)}
.auth-layout,.installer{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at top right,#17324a 0,#0b0f14 45%)}
.auth-card,.installer-card{width:min(100%,430px);padding:30px;border:1px solid var(--border);border-radius:18px;background:rgba(19,25,34,.96);box-shadow:0 28px 80px rgba(0,0,0,.36)}
.auth-card h1,.installer-card h1{margin:16px 0 6px}.auth-card p,.installer-card>p{color:var(--muted);margin:0 0 20px}.auth-card label{margin-top:13px}.auth-card .btn{width:100%;margin-top:18px}
.installer-card{width:min(100%,900px)}.installer-card h2{margin:25px 0 12px;font-size:16px}.installer-card .btn{margin-top:22px}
.requirements{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:20px 0}.requirements div{padding:10px;border:1px solid var(--border);border-radius:8px}.requirements span{margin-right:8px;color:var(--success)}
@media(max-width:950px){
  .app-shell{grid-template-columns:1fr}.sidebar{position:fixed;z-index:20;left:-270px;width:250px;transition:.2s}.sidebar.open{left:0}.menu-button{display:block}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:620px){
  .content,.topbar{padding-left:16px;padding-right:16px}.stats-grid,.form-grid,.requirements{grid-template-columns:1fr}.filters{grid-template-columns:1fr}.panel-header{align-items:flex-start;flex-direction:column}.stats-grid{grid-template-columns:1fr}
}