:root {
  --bg: #f6f7f9; --card: #ffffff; --line: #e3e6ea; --txt: #16202a; --muted: #6b7682;
  --accent: #1f6feb; --t: #d9822b; --h: #2f7fd1; --ok: #2e9d5b; --warn: #d9822b; --bad: #d64545;
  --shadow: 0 1px 2px rgba(16,24,40,.06), 0 1px 3px rgba(16,24,40,.08);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1720; --card: #17212b; --line: #26323e; --txt: #e7edf2; --muted: #8b98a5;
    --accent: #5b9dff; --t: #f0a050; --h: #63a8ff; --ok: #4cc27f; --warn: #f0a050; --bad: #f06a6a; --shadow: none; color-scheme: dark; }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; background: var(--bg); color: var(--txt); }
body { font: 15px/1.45 -apple-system, BlinkMacSystemFont, "Sukhumvit Set", "Noto Sans Thai", "Segoe UI", sans-serif; -webkit-text-size-adjust: 100%; }
button, input, select { font: inherit; color: inherit; }
.muted { color: var(--muted); }
.center { text-align: center; }
.pad { padding: 40px 16px; }
header#top { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: calc(env(safe-area-inset-top) + 10px) 16px 10px; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 600; cursor: pointer; }
.brand svg { width: 22px; height: 22px; color: var(--t); }
.topr { display: flex; align-items: center; gap: 10px; font-size: 13px; }
button.icon { border: 0; background: none; padding: 6px; border-radius: 8px; cursor: pointer; display: grid; place-items: center; }
button.icon svg { width: 22px; height: 22px; }
button.icon:hover { background: var(--line); }
main { max-width: 1100px; margin: 0 auto; padding: 16px 16px calc(env(safe-area-inset-bottom) + 40px); }

.summary { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 999px; background: var(--card); border: 1px solid var(--line); font-size: 13px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); flex: none; }
.dot.off { background: var(--bad); }
.dot.warn { background: var(--warn); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 14px 10px; box-shadow: var(--shadow); cursor: pointer; position: relative; overflow: hidden; }
.card:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.card.out::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 4px; background: var(--warn); }
.card.offline { opacity: .65; }
.card .nm { display: flex; justify-content: space-between; align-items: center; gap: 8px; font-weight: 600; }
.card .nm span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.vals { display: flex; align-items: baseline; gap: 18px; margin: 6px 0 2px; }
.big { font-size: 34px; font-weight: 600; letter-spacing: -.5px; font-variant-numeric: tabular-nums; }
.big small { font-size: 15px; font-weight: 500; color: var(--muted); margin-left: 2px; }
.t { color: var(--t); } .h { color: var(--h); }
.big.h { font-size: 24px; }
.meta { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); margin-top: 4px; gap: 8px; }
.flag { color: var(--warn); font-weight: 600; }
svg.spark { width: 100%; height: 44px; display: block; margin-top: 6px; }

h2 { font-size: 17px; margin: 26px 0 10px; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px; box-shadow: var(--shadow); }
.tabs { display: inline-flex; background: var(--line); border-radius: 10px; padding: 3px; gap: 2px; }
.tabs button { border: 0; background: none; padding: 5px 12px; border-radius: 8px; cursor: pointer; font-size: 14px; }
.tabs button.on { background: var(--card); box-shadow: var(--shadow); font-weight: 600; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }

.chart { position: relative; margin-top: 10px; }
.chart svg { width: 100%; display: block; overflow: visible; }
.chart .lbl { font-size: 12px; color: var(--muted); display: flex; gap: 12px; margin-bottom: 2px; }
.chart text { fill: var(--muted); font-size: 11px; }
.chart .grid line { stroke: var(--line); }
.tip { position: absolute; top: 0; pointer-events: none; background: var(--txt); color: var(--bg); font-size: 12px; padding: 4px 8px; border-radius: 6px; white-space: nowrap; transform: translateX(-50%); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 13px; margin-top: 8px; }
.legend i { display: inline-block; width: 12px; height: 3px; border-radius: 2px; margin-right: 6px; vertical-align: middle; }

.sheet { position: fixed; inset: 0; z-index: 20; background: rgba(0,0,0,.4); display: flex; align-items: flex-end; justify-content: center; }
.sheet-card { background: var(--bg); width: 100%; max-width: 760px; max-height: 92vh; overflow: auto; border-radius: 18px 18px 0 0; padding: 16px 16px calc(env(safe-area-inset-bottom) + 24px); }
@media (min-width: 800px) { .sheet { align-items: center; } .sheet-card { border-radius: 18px; } }
.sheet-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 8px; }
.sheet-head h3 { margin: 0; font-size: 19px; }
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 8px; margin-top: 12px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; }
.stat b { display: block; font-size: 18px; font-variant-numeric: tabular-nums; }
.stat span { font-size: 12px; color: var(--muted); }
dl.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 14px; margin: 0; font-size: 14px; }
dl.kv dt { color: var(--muted); }
dl.kv dd { margin: 0; word-break: break-all; }

form.f label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
input, select { width: 100%; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); }
input:focus { outline: 2px solid color-mix(in srgb, var(--accent) 50%, transparent); border-color: var(--accent); }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.btn { border: 0; border-radius: 10px; padding: 10px 16px; background: var(--accent); color: #fff; cursor: pointer; font-weight: 600; }
.btn.ghost { background: var(--line); color: var(--txt); }
.btn.danger { background: none; color: var(--bad); padding-left: 0; }
.btns { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.login { max-width: 360px; margin: 10vh auto; }
.err { color: var(--bad); font-size: 14px; min-height: 20px; margin-top: 6px; }
.toast { position: fixed; left: 50%; bottom: calc(env(safe-area-inset-bottom) + 20px); transform: translateX(-50%); background: var(--txt); color: var(--bg); padding: 8px 14px; border-radius: 10px; z-index: 30; font-size: 14px; }
code { font-size: 13px; background: var(--line); padding: 1px 6px; border-radius: 6px; word-break: break-all; }
table.list { width: 100%; border-collapse: collapse; font-size: 14px; }
table.list td { padding: 8px 4px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.langbtn { border: 1px solid var(--line); background: var(--card); border-radius: 8px; padding: 3px 9px; font-size: 13px; cursor: pointer; }
/* sheet: fit the visible viewport (iOS toolbars) and keep its title visible while scrolling */
.sheet { padding-top: env(safe-area-inset-top); }
.sheet-card { max-height: calc(100dvh - env(safe-area-inset-top) - 8px); overscroll-behavior: contain; -webkit-overflow-scrolling: touch; padding-top: 0; }
.sheet-head { position: sticky; top: 0; z-index: 3; background: var(--bg); padding: 14px 0 8px; margin: 0 0 8px; border-bottom: 1px solid var(--line); }
@media (max-width: 799px) { .sheet-card { border-radius: 16px 16px 0 0; height: calc(100dvh - env(safe-area-inset-top) - 8px); } }
.lvbar { height: 7px; border-radius: 4px; background: var(--line); margin: 5px 0 2px; overflow: hidden; }
.lvbar i { display: block; height: 100%; border-radius: 4px; }
tr.click { cursor: pointer; }
tr.click:hover td { background: color-mix(in srgb, var(--accent) 6%, transparent); }
button.pill { cursor: pointer; font: inherit; color: inherit; }