:root {
  --bg: #0f1419; --panel: #171d24; --panel2: #1e262f; --line: #2a333e; --text: #e6edf3; --muted: #8b98a5;
  --accent: #3b9eff; --ok: #3ccf7a; --warn: #f2b84b; --crit: #ff5a5f; --eco: #7fd1a8; --sleep: #8f9bff; --off: #6b7785; --win: #58c6e8;
  --radius: 10px; --shadow: 0 1px 2px rgba(0,0,0,.4);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; font-size: 15px;
}
@media (prefers-color-scheme: light) {
  :root { --bg: #f3f5f8; --panel: #ffffff; --panel2: #eef2f6; --line: #d7dee6; --text: #14202b; --muted: #5d6b79; --shadow: 0 1px 2px rgba(0,0,0,.08); }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
a { color: var(--accent); text-decoration: none; }
button, input, select { font: inherit; color: inherit; }
button { background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: .5rem .9rem; cursor: pointer; }
button:disabled { opacity: .5; cursor: default; }
button.ghost { background: transparent; border: 1px solid var(--line); color: var(--text); }
button.small { padding: .25rem .6rem; font-size: .85rem; }
input, select { background: var(--panel2); border: 1px solid var(--line); border-radius: 8px; padding: .5rem .7rem; }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: .45rem .6rem; border-bottom: 1px solid var(--line); font-size: .92rem; vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; }
code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: .85em; color: var(--muted); }
[hidden] { display: none !important; }

#topbar { display: flex; align-items: center; gap: 1.5rem; padding: .6rem 1.2rem; background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
#topbar .brand { font-weight: 700; color: var(--text); font-size: 1.05rem; }
#topbar .brand span { color: var(--muted); font-weight: 400; }
#topbar nav { display: flex; gap: 1rem; }
#topbar nav a { color: var(--muted); padding: .3rem .2rem; border-bottom: 2px solid transparent; }
#topbar nav a.active { color: var(--text); border-color: var(--accent); }
#topbar .right { margin-left: auto; display: flex; align-items: center; gap: .8rem; color: var(--muted); font-size: .9rem; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--off); display: inline-block; }
.dot.on { background: var(--ok); } .dot.off { background: var(--crit); }
.badge { background: var(--crit); color: #fff; border-radius: 999px; padding: 0 .45rem; font-size: .75rem; margin-left: .2rem; }

main { padding: 1.2rem; max-width: 1500px; margin: 0 auto; }
h1 { font-size: 1.35rem; margin: 0 0 1rem; } h2 { font-size: 1.05rem; margin: 1.2rem 0 .6rem; color: var(--muted); }
.crumbs { color: var(--muted); font-size: .9rem; margin-bottom: .8rem; } .crumbs a { color: var(--muted); } .crumbs b { color: var(--text); font-weight: 600; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem; box-shadow: var(--shadow); }
.row { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }
.muted { color: var(--muted); } .small { font-size: .85rem; } .right-al { text-align: right; }

/* login */
.login { max-width: 360px; margin: 10vh auto; display: grid; gap: .8rem; }
.login h1 { margin-bottom: .2rem; } .login input { width: 100%; }
.error { color: var(--crit); font-size: .9rem; }

/* hoteles */
.hotels { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }
.hotel-card { display: block; color: var(--text); }
.hotel-card h3 { margin: 0 0 .5rem; } .hotel-card .stats { display: flex; gap: 1.2rem; flex-wrap: wrap; color: var(--muted); font-size: .9rem; }
.hotel-card .stats b { color: var(--text); display: block; font-size: 1.3rem; }

/* chips de edificio / planta */
.chips { display: flex; gap: .4rem; flex-wrap: wrap; margin: .4rem 0 .8rem; }
.chip { border: 1px solid var(--line); background: var(--panel); border-radius: 999px; padding: .3rem .8rem; cursor: pointer; color: var(--muted); font-size: .9rem; }
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.legend { display: flex; gap: .9rem; flex-wrap: wrap; color: var(--muted); font-size: .8rem; margin: .4rem 0 .8rem; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: .3rem; vertical-align: middle; }

/* tarjetas de habitación */
.rooms { display: grid; grid-template-columns: repeat(auto-fill, minmax(168px, 1fr)); gap: .7rem; }
.room { display: block; color: var(--text); background: var(--panel); border: 1px solid var(--line); border-left: 5px solid var(--off); border-radius: var(--radius); padding: .6rem .7rem; box-shadow: var(--shadow); position: relative; transition: background .4s; }
.room:hover { background: var(--panel2); }
.room.flash { background: color-mix(in srgb, var(--accent) 18%, var(--panel)); }
.room.m-COMFORT { border-left-color: var(--ok); } .room.m-ECO { border-left-color: var(--eco); } .room.m-SLEEP { border-left-color: var(--sleep); }
.room.m-WINDOW { border-left-color: var(--win); } .room.m-OFF { border-left-color: var(--off); } .room.m-MANUAL { border-left-color: var(--warn); }
.room.stale { opacity: .55; }
.room .num { font-weight: 700; font-size: 1.05rem; display: flex; justify-content: space-between; align-items: center; }
.room .num small { font-weight: 500; font-size: .7rem; color: var(--muted); }
.room .temp { font-size: 1.6rem; font-weight: 600; margin: .15rem 0; }
.room .temp span { font-size: .85rem; color: var(--muted); font-weight: 400; margin-left: .3rem; }
.room .icons { display: flex; gap: .35rem; flex-wrap: wrap; font-size: .78rem; color: var(--muted); }
.room .icons b { font-weight: 500; padding: .05rem .35rem; border-radius: 5px; background: var(--panel2); color: var(--text); }
.room .icons b.on { background: color-mix(in srgb, var(--ok) 25%, var(--panel2)); }
.room .icons b.open { background: color-mix(in srgb, var(--win) 30%, var(--panel2)); }
.room .icons b.alert { background: color-mix(in srgb, var(--crit) 35%, var(--panel2)); }
.room .mode { font-size: .72rem; letter-spacing: .04em; color: var(--muted); }

/* detalle */
.grid2 { display: grid; grid-template-columns: 1.2fr 1fr; gap: 1rem; } @media (max-width: 900px) { .grid2 { grid-template-columns: 1fr; } }
.kv { display: grid; grid-template-columns: auto 1fr; gap: .3rem 1rem; font-size: .95rem; } .kv dt { color: var(--muted); } .kv dd { margin: 0; }
.big { font-size: 2.4rem; font-weight: 600; } .big small { font-size: 1rem; color: var(--muted); font-weight: 400; }
.controls { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; margin-top: .8rem; }
.controls input[type=number] { width: 5.5rem; }
canvas.chart { width: 100%; height: 240px; display: block; background: var(--panel2); border-radius: 8px; }
.pill { display: inline-block; padding: .1rem .5rem; border-radius: 999px; font-size: .78rem; background: var(--panel2); color: var(--text); }
.pill.online, .pill.ok { background: color-mix(in srgb, var(--ok) 30%, var(--panel2)); } .pill.offline, .pill.critical { background: color-mix(in srgb, var(--crit) 35%, var(--panel2)); }
.pill.warning { background: color-mix(in srgb, var(--warn) 35%, var(--panel2)); } .pill.unknown { color: var(--muted); }
.events { max-height: 320px; overflow: auto; font-size: .85rem; } .events div { padding: .25rem 0; border-bottom: 1px solid var(--line); }
.events time { color: var(--muted); margin-right: .5rem; font-variant-numeric: tabular-nums; }

#toast { position: fixed; bottom: 1.2rem; left: 50%; transform: translateX(-50%); background: var(--panel); border: 1px solid var(--line); padding: .6rem 1rem; border-radius: 8px; box-shadow: var(--shadow); z-index: 10; }
#toast.err { border-color: var(--crit); }
form.inline { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: .6rem; align-items: end; }
form.inline label { display: grid; gap: .25rem; font-size: .8rem; color: var(--muted); }