:root {
  color-scheme: dark;
  --navy: #080c13;
  --navy2: #0e1622;
  --ink: #e6edf7;
  --muted: #93a1b5;
  --line: #293548;
  --bg: #0c1119;
  --surface: #141b26;
  --surface2: #192332;
  --surface3: #202c3c;
  --blue: #5b8cff;
  --green: #35c991;
  --amber: #f0b84b;
  --red: #f06b73;
  --shadow: 0 14px 38px rgba(0,0,0,.22);
}

html[data-theme="light"] {
  color-scheme: light;
  --navy: #0b172a;
  --navy2: #12233c;
  --ink: #172033;
  --muted: #68758b;
  --line: #e4e9f0;
  --bg: #f4f7fb;
  --surface: #fff;
  --surface2: #f7f9fc;
  --surface3: #edf1f6;
  --blue: #2864dc;
  --green: #20a876;
  --amber: #e7a52b;
  --red: #df5a62;
  --shadow: 0 12px 35px rgba(23,32,51,.07);
}

* { box-sizing: border-box; }
html,body { min-height: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif; transition: background .2s,color .2s; }
button,input,select,textarea { font: inherit; }

.sidebar { position: fixed; z-index: 20; inset: 0 auto 0 0; width: 238px; background: linear-gradient(180deg,var(--navy),var(--navy2)); color: #fff; padding: 24px 18px; display: flex; flex-direction: column; border-right: 1px solid rgba(255,255,255,.06); transition: width .22s ease,box-shadow .22s ease; }
.brand { position: relative; display: flex; gap: 12px; align-items: center; min-height: 42px; padding: 0 26px 28px 8px; }
.brand-mark { display: grid; place-items: center; flex: 0 0 auto; width: 38px; height: 38px; border-radius: 11px; background: var(--blue); color: #fff; font-weight: 800; font-size: 20px; }
.brand-copy { min-width: 0; white-space: nowrap; overflow: hidden; }
.brand strong,.brand small { display: block; }
.brand strong { font-size: 17px; }
.brand small { color: #8fa0b8; font-size: 11px; margin-top: 2px; }
.sidebar-toggle { position: absolute; right: -31px; top: 3px; display: grid; place-items: center; width: 28px; height: 32px; border: 1px solid var(--line); border-left: 0; border-radius: 0 8px 8px 0; background: var(--surface); color: var(--muted); cursor: pointer; font-size: 22px; box-shadow: 5px 5px 16px rgba(0,0,0,.12); }
.sidebar-toggle:hover { color: var(--ink); background: var(--surface2); }
.sidebar nav { display: grid; gap: 6px; }
.nav-item { display: flex; align-items: center; width: 100%; min-height: 43px; border: 0; background: transparent; color: #9fafc4; text-align: left; padding: 10px 12px; border-radius: 9px; cursor: pointer; white-space: nowrap; overflow: hidden; }
.nav-icon { display: grid; place-items: center; flex: 0 0 28px; font-size: 17px; }
.nav-label { margin-left: 4px; }
.nav-item:hover,.nav-item.active { background: #192b46; color: #fff; }
.server-state { margin-top: auto; border-top: 1px solid #243752; padding: 20px 8px 0; display: flex; align-items: center; gap: 10px; min-height: 58px; }
.server-state i { flex: 0 0 auto; width: 9px; height: 9px; border-radius: 50%; background: #30ce91; box-shadow: 0 0 0 4px rgba(48,206,145,.12); }
.server-copy { min-width: 0; white-space: nowrap; overflow: hidden; }
.server-state strong,.server-state small { display: block; font-size: 11px; }
.server-state small { color: #8292a9; margin-top: 3px; }
.logout { display: block; margin-top: 5px; padding: 0; border: 0; color: #91a4bf; background: transparent; font-size: 10px; cursor: pointer; }

main { margin-left: 238px; padding: 28px 34px 60px; transition: margin-left .22s ease; }
body.sidebar-collapsed .sidebar { width: 76px; padding-inline: 12px; }
body.sidebar-collapsed main { margin-left: 76px; }
body.sidebar-collapsed .brand { padding-left: 7px; padding-right: 0; }
body.sidebar-collapsed .brand-copy,body.sidebar-collapsed .nav-label,body.sidebar-collapsed .server-copy { display: none; }
body.sidebar-collapsed .nav-item { justify-content: center; padding-inline: 10px; }
body.sidebar-collapsed .server-state { justify-content: center; padding-inline: 0; }
body.sidebar-collapsed .sidebar:hover { width: 238px; box-shadow: 18px 0 40px rgba(0,0,0,.28); }
body.sidebar-collapsed .sidebar:hover .brand { padding-left: 8px; padding-right: 26px; }
body.sidebar-collapsed .sidebar:hover .brand-copy,body.sidebar-collapsed .sidebar:hover .nav-label,body.sidebar-collapsed .sidebar:hover .server-copy { display: block; }
body.sidebar-collapsed .sidebar:hover .nav-item { justify-content: flex-start; padding-inline: 12px; }
body.sidebar-collapsed .sidebar:hover .server-state { justify-content: flex-start; padding-inline: 8px; }

header { display: flex; justify-content: space-between; align-items: center; gap: 18px; margin-bottom: 25px; }
h1 { margin: 0; font-size: 25px; letter-spacing: -.4px; }
header p,.panel-title p { margin: 5px 0 0; color: var(--muted); font-size: 13px; }
.header-actions { display: flex; gap: 9px; align-items: center; }
.refresh,.theme-toggle,.link-button,.pagination button { border: 1px solid var(--line); background: var(--surface); border-radius: 8px; padding: 9px 14px; color: var(--ink); cursor: pointer; }
.theme-toggle { display: grid; place-items: center; width: 39px; height: 39px; padding: 0; font-size: 16px; }
.refresh:hover,.theme-toggle:hover,.link-button:hover,.pagination button:hover { background: var(--surface2); border-color: #3e506a; }
.pagination button:disabled { opacity: .45; cursor: default; }

.cards { display: grid; grid-template-columns: repeat(4,minmax(170px,1fr)); gap: 16px; margin-bottom: 18px; }
.metric,.panel { background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); }
.metric { border-radius: 13px; padding: 20px; border-top: 3px solid var(--blue); }
.metric.online { border-top-color: var(--green); }
.metric.warning { border-top-color: var(--amber); }
.metric.offline { border-top-color: var(--red); }
.metric span,.metric small { display: block; color: var(--muted); font-size: 12px; }
.metric strong { display: block; font-size: 31px; margin: 9px 0 5px; }
.grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 18px; margin-bottom: 18px; }
.panel { border-radius: 13px; padding: 20px; margin-bottom: 18px; overflow: hidden; }
.panel-title { display: flex; justify-content: space-between; align-items: center; gap: 15px; margin-bottom: 18px; }
.panel h2 { font-size: 15px; margin: 0; }
.model-bars,.activity { display: grid; gap: 13px; }
.model-row { display: grid; grid-template-columns: 85px 1fr 40px; align-items: center; gap: 12px; font-size: 12px; }
.bar { height: 8px; background: var(--surface3); border-radius: 10px; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--blue); border-radius: 10px; }
.activity { gap: 12px; }
.activity div,.detail-item { background: var(--surface2); border-radius: 10px; padding: 14px; }
.activity span,.detail-item span { color: var(--muted); font-size: 12px; }
.activity strong { display: block; font-size: 22px; margin-top: 5px; }
.toolbar { display: grid; grid-template-columns: 1fr 190px 190px; gap: 10px; margin-bottom: 18px; }
input,select,textarea { width: 100%; border: 1px solid var(--line); border-radius: 8px; background: var(--surface2); padding: 10px 12px; color: var(--ink); }
input:focus,select:focus,textarea:focus { outline: 2px solid rgba(91,140,255,.25); border-color: var(--blue); }
table { width: 100%; border-collapse: collapse; font-size: 12px; }
th { text-align: left; color: var(--muted); font-weight: 600; background: var(--surface2); }
th,td { padding: 11px 12px; border-bottom: 1px solid var(--line); }
tbody tr { cursor: pointer; }
tbody tr:hover { background: rgba(91,140,255,.07); }
.badge { display: inline-flex; align-items: center; gap: 6px; border-radius: 20px; padding: 4px 8px; font-weight: 600; font-size: 10px; }
.badge:before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge.online { color: #50dda7; background: rgba(32,168,118,.14); }
.badge.sin_contacto { color: #efbe59; background: rgba(231,165,43,.15); }
.badge.offline { color: #ff7d85; background: rgba(223,90,98,.15); }
html[data-theme="light"] .badge.online { color: #13835c; background: #e8f8f1; }
html[data-theme="light"] .badge.sin_contacto { color: #a66d08; background: #fff5dd; }
html[data-theme="light"] .badge.offline { color: #b73b45; background: #ffebed; }
.empty { padding: 35px; text-align: center; color: var(--muted); }
.pagination { display: flex; justify-content: flex-end; gap: 12px; align-items: center; padding-top: 15px; font-size: 12px; }
.view { display: none; }
.view.active { display: block; }
dialog { border: 1px solid var(--line); border-radius: 14px; width: min(610px,calc(100vw - 30px)); padding: 0; color: var(--ink); background: var(--surface); box-shadow: 0 25px 80px rgba(0,0,0,.5); }
dialog::backdrop { background: rgba(2,7,14,.72); }
dialog form { padding: 25px; position: relative; }
.close { position: absolute; right: 16px; top: 13px; border: 0; background: transparent; font-size: 26px; color: var(--muted); cursor: pointer; }
.detail-head { padding-right: 35px; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 20px 0; }
.detail-item span { display: block; font-size: 10px; }
.detail-item strong { display: block; margin-top: 4px; font-size: 13px; }
.command-box { border-top: 1px solid var(--line); padding-top: 18px; }
.primary { border: 0; background: var(--blue); color: #fff; border-radius: 8px; padding: 10px 15px; cursor: pointer; margin-top: 10px; }
.primary:hover { filter: brightness(1.08); }

.login-screen { background: radial-gradient(circle at 30% 20%,#192d4b,#060a10 68%); }
.login-card { background: var(--surface); border: 1px solid var(--line); }
.group-checks label { background: var(--surface2); }
.history-scope button,.history-button { color: var(--ink); background: var(--surface); }
.chart-grid line { stroke: var(--line); }
.chart-grid text { fill: var(--muted); }

@media(max-width:950px) {
  .sidebar { width: 76px; padding-inline: 12px; }
  .brand { padding-left: 7px; padding-right: 0; }
  .brand-copy,.nav-label,.server-copy { display: none; }
  .nav-item { justify-content: center; padding-inline: 10px; }
  .server-state { justify-content: center; padding-inline: 0; }
  .sidebar-toggle { display: none; }
  main,body.sidebar-collapsed main { margin-left: 76px; }
  .cards { grid-template-columns: 1fr 1fr; }
  .grid { grid-template-columns: 1fr; }
  .toolbar { grid-template-columns: 1fr; }
}

@media(max-width:620px) {
  main,body.sidebar-collapsed main { padding: 20px 14px; margin-left: 0; }
  .sidebar { display: none; }
  .cards { grid-template-columns: 1fr 1fr; }
  .metric { padding: 15px; }
  .metric strong { font-size: 25px; }
  header { align-items: flex-start; }
  .refresh { font-size: 0; width: 39px; height: 39px; padding: 0; }
  .refresh::before { content: "↻"; font-size: 18px; }
}