:root{
  /* superfícies */
  --bg:#f4f7fb; --panel:#ffffff; --panel-2:#f8fafc;
  --line:#e7edf4; --line-2:#eef2f7;
  /* texto */
  --ink:#0f172a; --ink-2:#334155; --muted:#64748b; --muted-2:#94a3b8;
  /* marca / acento (azul) */
  --primary:#2563eb; --primary-d:#1d4ed8; --primary-soft:#eff4ff;
  /* sidebar */
  --sb:#0b1324; --sb-2:#0e1830; --sb-line:#1e293b;
  --sb-ink:#cbd5e1; --sb-muted:#7c8aa3; --sb-active:#1d3a8a;
  /* status */
  --ok:#16a34a; --ok-soft:#dcfce7; --warn:#d97706; --warn-soft:#fef3c7;
  --crit:#dc2626; --crit-soft:#fee2e2;
  --shadow:0 1px 2px rgba(15,23,42,.04), 0 4px 16px rgba(15,23,42,.06);
  --shadow-lg:0 10px 40px rgba(15,23,42,.12);
  --r:14px; --r-sm:10px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:var(--bg);color:var(--ink);font-size:14.5px;line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
h1{font-size:22px;font-weight:700;letter-spacing:-.02em;margin:0 0 18px}
h2{font-size:16px;font-weight:600;margin:20px 0 10px;letter-spacing:-.01em}
.muted{color:var(--muted)} .small{font-size:12px}
code{background:var(--primary-soft);color:var(--primary-d);padding:1px 6px;border-radius:6px;font-size:.88em;font-family:ui-monospace,Menlo,Consolas,monospace}
pre.code{background:#0b1324;color:#cbd5e1;padding:14px 16px;border-radius:var(--r-sm);overflow:auto;font-size:12.5px;font-family:ui-monospace,Menlo,Consolas,monospace}

/* ===================== APP SHELL ===================== */
.app{display:flex;min-height:100vh}

/* Sidebar */
.sidebar{
  width:250px;flex:0 0 250px;position:fixed;inset:0 auto 0 0;height:100vh;
  background:linear-gradient(180deg,var(--sb),var(--sb-2));
  border-right:1px solid var(--sb-line);display:flex;flex-direction:column;z-index:20;
}
.sb-brand{display:flex;align-items:center;gap:12px;padding:20px 20px 16px}
.sb-logo{
  width:38px;height:38px;border-radius:10px;flex:0 0 38px;
  background:linear-gradient(135deg,var(--primary),#60a5fa);
  color:#fff;font-weight:800;font-size:18px;display:grid;place-items:center;
  box-shadow:0 4px 14px rgba(37,99,235,.45);
}
.sb-brand-txt{display:flex;flex-direction:column;line-height:1.2}
.sb-brand-txt strong{color:#fff;font-size:15px;font-weight:700}
.sb-brand-txt span{color:var(--sb-muted);font-size:11.5px}

.sb-nav{display:flex;flex-direction:column;gap:3px;padding:10px 12px;margin-top:6px}
.sb-nav a{
  display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:10px;
  color:var(--sb-ink);font-weight:500;font-size:14px;transition:.15s;
}
.sb-nav a:hover{background:rgba(148,163,184,.10);color:#fff;text-decoration:none}
.sb-nav a.active{background:linear-gradient(90deg,var(--primary),#3b82f6);color:#fff;box-shadow:0 4px 14px rgba(37,99,235,.4)}
.sb-nav svg{width:20px;height:20px;flex:0 0 20px}

.sb-foot{margin-top:auto;padding:14px;border-top:1px solid var(--sb-line);display:flex;align-items:center;gap:10px}
.sb-user{display:flex;align-items:center;gap:10px;min-width:0;flex:1}
.avatar{
  width:36px;height:36px;border-radius:50%;flex:0 0 36px;display:grid;place-items:center;
  background:linear-gradient(135deg,#334155,#475569);color:#fff;font-weight:700;font-size:15px;
}
.sb-user-txt{display:flex;flex-direction:column;min-width:0}
.sb-user-txt strong{color:#fff;font-size:13.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sb-user-txt span{color:var(--sb-muted);font-size:11.5px}
.sb-logout{display:grid;place-items:center;width:36px;height:36px;border-radius:9px;color:var(--sb-muted);flex:0 0 36px}
.sb-logout:hover{background:rgba(220,38,38,.15);color:#fca5a5;text-decoration:none}
.sb-logout svg{width:19px;height:19px}

/* Main column */
.main{flex:1;margin-left:250px;min-width:0;display:flex;flex-direction:column}
.topbar{
  position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:62px;padding:0 28px;background:rgba(255,255,255,.8);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.tb-title{font-size:15px;font-weight:600;color:var(--ink)}
.tb-right{display:flex;align-items:center;gap:10px}
.content{padding:28px;max-width:1180px;width:100%}

/* badges no topo */
.badge{display:inline-flex;align-items:center;gap:7px;padding:5px 11px;border-radius:20px;font-size:12.5px;font-weight:600;border:1px solid var(--line)}
.badge-host{background:var(--panel);color:var(--ink-2)}
.badge-host .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px var(--ok-soft)}
.badge-secure{background:var(--ok-soft);color:#15803d;border-color:transparent}
.badge-warn{background:var(--warn-soft);color:#b45309;border-color:transparent}

/* ===================== CARDS ===================== */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:16px;margin-bottom:24px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;box-shadow:var(--shadow);transition:.15s}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-1px)}
.card-num{font-size:28px;font-weight:800;letter-spacing:-.03em;line-height:1}
.card-label{color:var(--muted);font-size:12.5px;margin-top:8px;font-weight:500}
.card-warn{border-color:#fcd34d;background:linear-gradient(180deg,#fffdf6,#fff)}
.card-warn .card-num{color:var(--warn)}
.card-crit{border-color:#fca5a5;background:linear-gradient(180deg,#fff7f7,#fff)}
.card-crit .card-num{color:var(--crit)}

/* ===================== PANEL + TABLE ===================== */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin-bottom:22px;box-shadow:var(--shadow)}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;border-bottom:1px solid var(--line)}
.panel-head h1,.panel-head h2{margin:0}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line-2);vertical-align:middle}
.table th{background:var(--panel-2);font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600}
.table tbody tr{transition:.12s}
.table tbody tr:hover{background:var(--panel-2)}
.table tr:last-child td{border-bottom:none}
.actions{white-space:nowrap;display:flex;gap:6px;align-items:center}

/* barras de ocupação */
.bar{background:#eef2f7;border-radius:20px;height:8px;overflow:hidden;margin-bottom:5px}
.bar-fill{height:100%;border-radius:20px;transition:width .4s}
.bar-ok{background:linear-gradient(90deg,#22c55e,#16a34a)}
.bar-warn{background:linear-gradient(90deg,#fbbf24,#d97706)}
.bar-crit{background:linear-gradient(90deg,#f87171,#dc2626)}
.bar-pct{font-size:12px;font-weight:700}
.bar-pct-ok{color:var(--ok)} .bar-pct-warn{color:var(--warn)} .bar-pct-crit{color:var(--crit)}

/* tags */
.tag{display:inline-flex;align-items:center;background:var(--primary-soft);color:var(--primary-d);border-radius:20px;padding:3px 10px;font-size:11px;font-weight:600}
.tag-on{background:var(--ok-soft);color:#15803d}
.tag-off{background:var(--crit-soft);color:#b91c1c}

/* ===================== BUTTONS ===================== */
.btn{display:inline-flex;align-items:center;gap:7px;background:var(--panel);border:1px solid var(--line);color:var(--ink-2);
  padding:8px 15px;border-radius:9px;cursor:pointer;font-size:13.5px;font-weight:600;font-family:inherit;transition:.15s;white-space:nowrap}
.btn:hover{background:var(--panel-2);border-color:#d4dce6;text-decoration:none}
.btn-sm{padding:6px 11px;font-size:12.5px;border-radius:8px}
.btn-block{width:100%;justify-content:center}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 2px 8px rgba(37,99,235,.3)}
.btn-primary:hover{background:var(--primary-d);border-color:var(--primary-d)}
.btn-ghost{background:transparent}
.btn-danger{background:var(--panel);border-color:#f3c6c6;color:var(--crit)}
.btn-danger:hover{background:var(--crit-soft);border-color:#f0aaaa}

/* ===================== TOOLBAR / SEARCH ===================== */
.toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.search{display:flex;gap:8px}
.search input[type=search]{padding:9px 13px;border:1px solid var(--line);border-radius:9px;min-width:260px;background:var(--panel)}

/* ===================== FORMS ===================== */
.form-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:24px;max-width:780px;box-shadow:var(--shadow)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
label{display:block;margin:12px 0;font-size:13px;font-weight:600;color:var(--ink-2)}
label small{font-weight:400;color:var(--muted)}
input[type=text],input[type=password],input[type=number],input[type=search],select{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:9px;font-size:14px;font-family:inherit;
  margin-top:6px;background:var(--panel);color:var(--ink);transition:.15s}
input:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
input:disabled{background:var(--panel-2);color:var(--muted)}
.check{display:flex;align-items:center;gap:9px;font-weight:600}
.check input{width:auto;margin:0}
.form-actions{display:flex;gap:10px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line-2)}
.help{margin:14px 0;background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-sm);padding:12px 16px}
.help summary{cursor:pointer;font-weight:600;color:var(--ink-2)}
.help ol{margin:12px 0 0;padding-left:20px}
.help li{margin:7px 0}

/* ===================== FLASH ===================== */
.flash{padding:13px 16px;border-radius:var(--r-sm);margin-bottom:18px;font-size:14px;border:1px solid transparent;display:flex;gap:8px;align-items:flex-start}
.flash-success{background:var(--ok-soft);border-color:#bbf7d0;color:#15803d}
.flash-error{background:var(--crit-soft);border-color:#fecaca;color:#b91c1c}
.flash-info{background:var(--primary-soft);border-color:#c7dbff;color:var(--primary-d)}

/* ===================== LOGIN ===================== */
.is-login{background:radial-gradient(1200px 600px at 50% -10%,#1e3a8a,#0b1324)}
.login-main{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.login-card{background:#fff;border-radius:18px;padding:38px 34px;width:100%;max-width:400px;box-shadow:var(--shadow-lg)}
.login-logo{
  width:56px;height:56px;border-radius:15px;margin:0 auto 14px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),#60a5fa);color:#fff;font-weight:800;font-size:26px;
  box-shadow:0 8px 22px rgba(37,99,235,.45);
}
.login-card h1{margin:0;font-size:22px;text-align:center}
.login-card .muted{text-align:center;margin:6px 0 24px}
.login-card .btn{margin-top:8px}

/* ===================== RESPONSIVE ===================== */
@media(max-width:860px){
  .sidebar{position:static;width:100%;flex:none;height:auto;flex-direction:row;flex-wrap:wrap;align-items:center}
  .sb-brand{padding:14px 16px}
  .sb-nav{flex-direction:row;flex-wrap:wrap;margin:0;padding:0 12px 12px;width:100%}
  .sb-nav a{flex:1;justify-content:center;min-width:120px}
  .sb-foot{margin:0;border-top:none;border-left:1px solid var(--sb-line)}
  .main{margin-left:0}
  .content{padding:18px}
  .grid2{grid-template-columns:1fr}
  .actions{flex-wrap:wrap}
}