:root {
  --bg: #f3f5f8; --card: #fff; --text: #18202b; --muted: #6b7380; --line: #e2e6ec;
  --accent: #2563eb; --ok: #067647; --ok-bg: #e8f7ee; --bad: #b42318; --bad-bg: #fdeceb;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #12151a; --card: #1b1f26; --text: #e7e9ec; --muted: #9aa1ad; --line: #2b3039;
          --accent: #6ea0ff; --ok: #47cd89; --ok-bg: #12291d; --bad: #f97066; --bad-bg: #2d1615; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
       font: 15px/1.7 Vazirmatn, Tahoma, "Segoe UI", system-ui, sans-serif; }
main { max-width: 560px; margin: 0 auto; padding: 16px; }
h1 { font-size: 20px; margin: 0; }
h2 { font-size: 16px; margin: 0 0 10px; }
.top { display: flex; justify-content: space-between; align-items: center; margin: 4px 0 12px; }
.refresh { color: var(--accent); text-decoration: none; font-size: 14px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px; margin: 12px 0; }
.card.center { text-align: center; margin-top: 40px; }
.big-icon { font-size: 40px; }
.hero.ok { border-color: var(--ok); }
.hero.bad { border-color: var(--bad); }
.state { font-weight: 700; margin-bottom: 10px; }
.hero.ok .state { color: var(--ok); }
.hero.bad .state { color: var(--bad); }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.stats div { background: var(--bg); border-radius: 10px; padding: 10px; text-align: center; }
.stats span { display: block; color: var(--muted); font-size: 13px; }
.stats b { font-size: 26px; }
.sub { margin: 8px 0 0; }
.hint { color: var(--muted); font-size: 13px; margin: 8px 0 0; }
.note { background: var(--bad-bg); color: var(--bad); padding: 8px 12px; border-radius: 10px; }
.btn { display: block; width: 100%; text-align: center; padding: 11px; margin: 8px 0 0; border-radius: 10px;
       border: 1px solid var(--line); background: var(--bg); color: var(--text); font: inherit;
       text-decoration: none; cursor: pointer; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.danger { background: var(--bad); border-color: var(--bad); color: #fff; }
.btn:disabled, .btn.disabled { opacity: .55; cursor: not-allowed; }
.ads .btn.ad:not(.disabled) { background: var(--ok-bg); border-color: var(--ok); color: var(--ok); font-weight: 700; }
.devices { list-style: none; margin: 10px 0 0; padding: 0; display: grid; gap: 10px; }
.devices li { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; }
.devices li.on { border-color: var(--ok); }
.devices li.off { color: var(--muted); }
.dev-head { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.dev-head .dot { width: 14px; }
.devices li.on .dot, .devices li.on .state { color: var(--ok); }
.dev-head .model { flex: 1; font-weight: 700; min-width: 0; overflow-wrap: anywhere; }
.dev-head .state { font-size: 13px; white-space: nowrap; }
.dev-meta { display: grid; grid-template-columns: max-content 1fr; gap: 3px 12px; margin: 0; font-size: 14px; }
.dev-meta dt { color: var(--muted); }
.dev-meta dd { margin: 0; min-width: 0; overflow-wrap: anywhere; }
.mono { font-family: ui-monospace, monospace; font-size: 12px; }
.wall { width: 100%; height: 75vh; min-height: 520px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
.wide { max-width: 900px; }