:root {
  --bg: #f6f7f9; --card: #ffffff; --ink: #1c2330; --muted: #5b6470; --line: #d9dde3; --accent: #1f6fb2;
  --ok-bg: #e6f4ea; --ok-ink: #17692e;
  --warn-bg: #fff1d6; --warn-ink: #8a4b00;
  --alert-bg: #fde7e5; --alert-ink: #a3201a;
  --silent-bg: #e8eaee; --silent-ink: #454c58;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
main { max-width: 1180px; margin: 0 auto; padding: 16px; }
h1 { font-size: 1.45rem; margin: .4rem 0 .3rem; }
h2 { font-size: 1.1rem; margin: 1.6rem 0 .5rem; }
small { font-weight: 400; font-size: .75em; }
.muted { color: var(--muted); font-size: .92rem; }
.legend { margin-top: 1.5rem; }

.top { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; padding: 10px 16px; background: #14202e; color: #fff; }
.top a { color: #fff; text-decoration: none; }
.top .brand { font-weight: 700; }
.top nav { display: flex; gap: 16px; flex: 1; }
.top nav a:hover, .top nav a:focus { text-decoration: underline; }
.who { display: flex; gap: 12px; align-items: center; font-size: .9rem; margin: 0; }
button.link { background: none; border: 0; color: #cfe3f7; text-decoration: underline; cursor: pointer; font: inherit; padding: 0; }

.flash { background: #e8f1fb; border-left: 4px solid var(--accent); padding: 8px 12px; margin: 8px 0; }

.banner { background: var(--alert-bg); border-left: 5px solid var(--alert-ink); padding: 8px 16px; margin: 12px 0; border-radius: 4px; }
.banner h2 { margin: .2rem 0; color: var(--alert-ink); }
.banner ul { margin: .3rem 0 .5rem; padding-left: 1.1rem; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(158px, 1fr)); gap: 10px; }
.tile { display: grid; grid-template-columns: 1fr auto; gap: 1px 6px; background: var(--card); border: 1px solid var(--line);
  border-left-width: 6px; border-radius: 6px; padding: 8px 10px; color: inherit; text-decoration: none; }
.tile:hover, .tile:focus-visible { box-shadow: 0 0 0 2px var(--accent); }
.tile .tid { font-weight: 700; font-size: .95rem; }
.tile .zone { grid-column: 1 / -1; color: var(--muted); font-size: .8rem; }
.tile .val { grid-column: 1 / -1; font-size: 1.55rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.tile .val small { color: var(--muted); }
.tile .rng { grid-column: 1 / -1; font-size: .75rem; color: var(--muted); }
.tile .badge { font-size: .72rem; font-weight: 700; border-radius: 3px; padding: 1px 6px; justify-self: start; margin-top: 4px; }
.tile .age { font-size: .72rem; color: var(--muted); justify-self: end; align-self: end; }
.st-ok { border-left-color: #2e9e4f; } .st-ok .badge { background: var(--ok-bg); color: var(--ok-ink); }
.st-warn { border-left-color: #d98a00; } .st-warn .badge { background: var(--warn-bg); color: var(--warn-ink); }
.st-alert { border-left-color: #d3382f; background: #fffafa; } .st-alert .badge { background: var(--alert-bg); color: var(--alert-ink); }
.st-silent { border-left-color: #8a919c; } .st-silent .badge { background: var(--silent-bg); color: var(--silent-ink); }

.ranges { display: flex; gap: 8px; margin: 8px 0; }
.btn { display: inline-block; border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 6px;
  padding: 6px 12px; font: inherit; font-size: .9rem; cursor: pointer; text-decoration: none; }
.btn.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn:hover { border-color: var(--accent); }
.chart { position: relative; height: 320px; background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 8px; }
.chart.small { height: 200px; }

.scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; background: var(--card); border: 1px solid var(--line); }
th, td { text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--line); font-size: .9rem; vertical-align: middle; }
th { background: #eef0f3; font-weight: 600; }
td form { margin: 0; }
input, select { font: inherit; font-size: .9rem; padding: 4px 6px; border: 1px solid #b9c0ca; border-radius: 4px; background: #fff; }
.thr input[name] { width: 5.5em; }

.login { max-width: 340px; margin: 12vh auto; background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 20px 24px; }
.login form { display: grid; gap: 12px; }
.login label { display: grid; gap: 4px; font-size: .9rem; }
.login input { padding: 8px; }

@media (max-width: 520px) {
  main { padding: 10px; }
  .top .brand { flex-basis: 100%; }
  .top nav a { white-space: nowrap; }
  .who { flex-basis: 100%; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .chart { height: 260px; }
  .tile .val { font-size: 1.35rem; }
}

/* Démonstration */
.titlebar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px; }
.demo-form { margin: 0; }
.demo-form .btn { padding: 8px 16px; font-weight: 600; }
.demo-form .btn[disabled] { opacity: .5; cursor: progress; }
.demo { background: #e8f1fb; border-left: 5px solid var(--accent); padding: 8px 16px; margin: 12px 0; border-radius: 4px; }
.demo h2 { margin: .2rem 0; }
.demo ol { list-style: none; margin: .3rem 0; padding: 0; }
.demo li { padding: 2px 0; color: #5b6470; }
.demo li.ok { color: #17692e; }
.demo li.now { color: var(--ink); font-weight: 600; }