/* Vallumo — tema oscuro y claro. */
:root {
  color-scheme: light;
  --bg: #f4f4f2; --surface: #fcfcfb; --surface-2: #efeeea; --border: #dddcd6;
  --text: #0b0b0b; --text-2: #52514e; --muted: #7a7974;
  --accent: #2a78d6; --accent-ink: #fff;
  --good: #0ca30c; --warn: #fab219; --crit: #d03b3b; --unknown: #8a8984;
  --good-ink: #006300; --warn-ink: #8a5a00; --crit-ink: #b02a2a;
  --good-bg: #e6f4e6; --warn-bg: #fdf2d8; --crit-bg: #fbe4e4; --unknown-bg: #ecebe8;
  --series-1: #2a78d6; --grid: #e6e5e0;
  --radius: 10px; --shadow: 0 1px 2px rgba(0,0,0,.06);
  --font: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #121211; --surface: #1a1a19; --surface-2: #232321; --border: #33332f;
    --text: #f0efec; --text-2: #c3c2b7; --muted: #8f8e86;
    --accent: #3987e5;
    --good-ink: #5fd35f; --warn-ink: #fab219; --crit-ink: #ff7b7b;
    --good-bg: #16301a; --warn-bg: #3a2f12; --crit-bg: #3d1a1a; --unknown-bg: #2a2a28;
    --series-1: #3987e5; --grid: #2c2c29; --shadow: none;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121211; --surface: #1a1a19; --surface-2: #232321; --border: #33332f;
  --text: #f0efec; --text-2: #c3c2b7; --muted: #8f8e86;
  --accent: #3987e5;
  --good-ink: #5fd35f; --warn-ink: #fab219; --crit-ink: #ff7b7b;
  --good-bg: #16301a; --warn-bg: #3a2f12; --crit-bg: #3d1a1a; --unknown-bg: #2a2a28;
  --series-1: #3987e5; --grid: #2c2c29; --shadow: none;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 15px/1.45 var(--font); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 0 0 12px; }
h3 { font-size: 15px; margin: 0 0 8px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.hidden { display: none !important; }
code, .mono { font-family: Consolas, "Cascadia Mono", monospace; font-size: 13px; }

/* Barra superior */
.top { display: flex; align-items: center; gap: 16px; padding: 10px 20px; background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 5; }
.brand { font-weight: 800; font-size: 18px; letter-spacing: .3px; color: var(--text); display: flex; align-items: center; gap: 8px; }
.brand-mark { width: 22px; height: 22px; border-radius: 6px; background: var(--accent); display: inline-grid; place-items: center; color: #fff; font-size: 13px; }
.nav { display: flex; gap: 4px; flex: 1; }
.nav a { color: var(--text-2); padding: 6px 10px; border-radius: 8px; }
.nav a.on, .nav a:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }
.who { color: var(--muted); font-size: 13px; }
main { max-width: 1200px; margin: 0 auto; padding: 20px; }

/* Botones y formularios */
button, .btn { font: inherit; border: 1px solid var(--border); background: var(--surface-2); color: var(--text); padding: 7px 14px; border-radius: 8px; cursor: pointer; }
button:hover { border-color: var(--muted); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
button.danger { color: var(--crit-ink); }
button.link { background: none; border: none; color: var(--accent); padding: 0; }
button:disabled { opacity: .55; cursor: default; }
input, select, textarea { font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 7px 10px; width: 100%; }
input:focus, select:focus, textarea:focus, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
label { display: block; font-size: 13px; color: var(--text-2); margin: 10px 0 4px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: end; }
.row > * { flex: 1; min-width: 140px; }
.row > .shrink { flex: 0 0 auto; min-width: 0; }
.check { display: flex; align-items: center; gap: 8px; color: var(--text); font-size: 14px; margin: 6px 0; }
.check input { width: auto; }
.error { color: var(--crit-ink); min-height: 20px; margin-top: 8px; }
.ok-msg { color: var(--good-ink); }

/* Tarjetas */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.stack > * + * { margin-top: 14px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin: 22px 0 10px; }

/* Estado: color + ícono + palabra (nunca solo color) */
.pill { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px; white-space: nowrap; }
.pill::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.s-ok { background: var(--good-bg); color: var(--good-ink); }
.s-warn { background: var(--warn-bg); color: var(--warn-ink); }
.s-crit { background: var(--crit-bg); color: var(--crit-ink); }
.s-unknown, .s-info { background: var(--unknown-bg); color: var(--text-2); }

.server { border-left: 5px solid var(--unknown); cursor: pointer; }
.server.st-ok { border-left-color: var(--good); }
.server.st-warn { border-left-color: var(--warn); }
.server.st-crit { border-left-color: var(--crit); }
.server:hover { border-color: var(--muted); }
.server-head { display: flex; justify-content: space-between; align-items: start; gap: 10px; }
.server-name { font-weight: 700; font-size: 16px; color: var(--text); }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 14px 0 8px; }
.metric { background: var(--surface-2); border-radius: 8px; padding: 8px 10px; }
.metric .lbl { font-size: 12px; color: var(--text-2); }
.metric .val { font-size: 20px; font-weight: 700; }
.bar { height: 4px; border-radius: 2px; background: var(--grid); margin-top: 6px; overflow: hidden; }
.bar > i { display: block; height: 100%; border-radius: 2px; background: var(--good); }
.bar.b-warn > i { background: var(--warn); }
.bar.b-crit > i { background: var(--crit); }
.problems { list-style: none; padding: 0; margin: 8px 0 0; font-size: 13px; }
.problems li { padding: 4px 0; border-top: 1px solid var(--border); display: flex; gap: 8px; align-items: baseline; }
.problems li .pill { flex: none; }

/* Tablas */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-weight: 600; color: var(--text-2); font-size: 12px; padding: 6px 8px; border-bottom: 1px solid var(--border); }
td { padding: 7px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
tr:last-child td { border-bottom: none; }
.table-wrap { overflow-x: auto; }

.events { list-style: none; padding: 0; margin: 0; font-size: 14px; }
.events li { display: grid; grid-template-columns: 110px auto 1fr; gap: 10px; padding: 7px 0; border-bottom: 1px solid var(--border); align-items: baseline; }
.events li:last-child { border-bottom: none; }
.events li.muted { display: block; }
.events .when { color: var(--muted); font-size: 12px; }

/* Gráficas */
.charts { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.chart { position: relative; }
.chart svg { display: block; width: 100%; height: 170px; overflow: visible; }
.chart .line { fill: none; stroke: var(--series-1); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart .area { fill: var(--series-1); opacity: .10; }
.chart .gridline { stroke: var(--grid); stroke-width: 1; }
.chart .ref-warn { stroke: var(--warn); stroke-width: 1; stroke-dasharray: 4 4; }
.chart .ref-crit { stroke: var(--crit); stroke-width: 1; stroke-dasharray: 4 4; }
.chart .axis { fill: var(--muted); font-size: 11px; }
.chart .cross { stroke: var(--muted); stroke-width: 1; }
.chart .dot { fill: var(--series-1); stroke: var(--surface); stroke-width: 2; }
.chart .head { display: flex; justify-content: space-between; align-items: baseline; }
.chart .now { font-weight: 700; font-size: 18px; }
.tip { position: absolute; pointer-events: none; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 5px 9px; font-size: 12px; box-shadow: 0 2px 8px rgba(0,0,0,.15); white-space: nowrap; transform: translate(-50%, -110%); }

/* Acceso */
.auth { max-width: 420px; margin: 8vh auto; padding: 0 16px; }
.auth .card { padding: 26px; }
.auth .brand { justify-content: center; font-size: 24px; margin-bottom: 18px; }
.qr { display: block; width: 220px; height: 220px; margin: 12px auto; background: #fff; padding: 8px; border-radius: 8px; }
.secret { word-break: break-all; text-align: center; background: var(--surface-2); padding: 8px; border-radius: 8px; }
.code-input { font-size: 26px; letter-spacing: 8px; text-align: center; }

.token-box { background: var(--surface-2); border: 1px dashed var(--accent); padding: 12px; border-radius: 8px; word-break: break-all; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px; }
.tabs button.on { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.empty { text-align: center; color: var(--muted); padding: 30px; }
.theme-btn { padding: 5px 9px; }

@media (max-width: 640px) {
  .top { flex-wrap: wrap; padding: 10px 16px; }
  .nav { order: 3; flex-basis: 100%; overflow-x: auto; }
  main { padding: 16px; }
  .grid { grid-template-columns: 1fr; }
  .events li { grid-template-columns: 1fr; gap: 2px; }
  .metrics { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}