/* ============================================================
   ARETAS IoT CLOUD — 2026 design system
   Ported from the aretas.ca redesign · dark neon "mission control"
   No framework. CSS custom properties + small, composable classes.
   ============================================================ */

:root{
  --bg:        #05080f;
  --bg-2:      #0a0f1c;
  --bg-3:      #0e1524;
  --surface:   rgba(255,255,255,.045);
  --surface-2: rgba(255,255,255,.07);
  --surface-3: rgba(255,255,255,.10);
  --stroke:    rgba(255,255,255,.10);
  --stroke-2:  rgba(255,255,255,.18);

  --teal:  #19c3ea;
  --teal-d:#0e86c7;
  --lime:  #9ede3f;
  --lime-d:#8dc63f;
  --violet:#7c5cff;
  --amber: #febc2e;
  --red:   #ff6b57;

  --text:  #eaf1fb;
  --muted: #93a3ba;
  --dim:   #64748b;

  --grad:      linear-gradient(100deg, var(--teal) 0%, #4fd6c0 42%, var(--lime) 100%);
  --grad-soft: linear-gradient(120deg, rgba(25,195,234,.16), rgba(158,222,63,.12));

  --r-xs: 8px;
  --r-sm: 12px;
  --r:    16px;
  --r-lg: 22px;
  --shadow:    0 24px 60px -28px rgba(0,0,0,.85);
  --glow-teal: 0 0 34px -8px rgba(25,195,234,.6);

  --nav-h: 60px;
  --maxw: min(1840px, 95vw);
  --ease: cubic-bezier(.22,.61,.36,1);
  --font-display:"Space Grotesk",system-ui,sans-serif;
  --font-body:"Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font-body);background:var(--bg);color:var(--text);
  line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(58% 45% at 12% -5%, rgba(25,195,234,.13), transparent 60%),
    radial-gradient(50% 40% at 92% 0%, rgba(158,222,63,.09), transparent 60%),
    radial-gradient(70% 60% at 50% 120%, rgba(124,92,255,.09), transparent 60%),
    var(--bg);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-2;opacity:.32;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 0%, #000 15%, transparent 72%);
}

h1,h2,h3,h4,h5{font-family:var(--font-display);font-weight:600;line-height:1.12;letter-spacing:-.015em;margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
strong{color:#fff;font-weight:600}
::selection{background:rgba(25,195,234,.32)}

.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.mono{font-variant-numeric:tabular-nums}

/* scrollbars */
*::-webkit-scrollbar{width:10px;height:10px}
*::-webkit-scrollbar-thumb{background:var(--surface-3);border-radius:8px;border:2px solid transparent;background-clip:content-box}
*::-webkit-scrollbar-thumb:hover{background:var(--stroke-2);background-clip:content-box}
*::-webkit-scrollbar-track{background:transparent}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.45em;justify-content:center;
  font-family:var(--font-display);font-weight:600;font-size:.9rem;line-height:1;
  padding:.62em 1.1em;border-radius:999px;border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s,background .2s,filter .2s,border-color .2s;
  white-space:nowrap;color:var(--text);background:var(--surface);border-color:var(--stroke-2);
}
.btn:hover{background:var(--surface-2);transform:translateY(-1px);border-color:var(--teal)}
.btn:active{transform:translateY(0)}
.btn-primary{color:#04121a;background:var(--grad);border-color:transparent;
  box-shadow:0 8px 24px -10px rgba(25,195,234,.6), inset 0 0 0 1px rgba(255,255,255,.18)}
/* re-assert the gradient: .btn:hover's background shorthand outranks .btn-primary */
.btn-primary:hover{background:var(--grad);filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 14px 34px -12px rgba(25,195,234,.75)}
.btn-ghost{background:transparent}
.btn-sm{padding:.45em .8em;font-size:.8rem}
.btn-lg{padding:.85em 1.5em;font-size:1rem}
.btn-icon{padding:.5em;border-radius:10px}
.btn[disabled]{opacity:.5;pointer-events:none}

/* ---------- form controls ---------- */
.field{display:inline-flex;flex-direction:column;gap:5px}
.field > label,.control-label{
  font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--dim);font-weight:600;
}
.input,select.input,input[type=text].input,input[type=email].input,input[type=password].input{
  font-family:inherit;font-size:.9rem;color:var(--text);
  padding:.55em .75em;border-radius:var(--r-sm);border:1px solid var(--stroke-2);
  background:rgba(5,8,15,.6);transition:border-color .2s,box-shadow .2s;min-width:0;
}
.input:focus{outline:0;border-color:var(--teal);box-shadow:0 0 0 3px rgba(25,195,234,.2)}
select.input{appearance:none;-webkit-appearance:none;padding-right:2em;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2393a3ba'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right .4em center;background-size:1.2em}
select.input option{background:#0b1120;color:var(--text)}

/* toggle checkbox */
.check{display:inline-flex;align-items:center;gap:8px;font-size:.82rem;color:var(--muted);cursor:pointer;user-select:none}
.check input{position:absolute;opacity:0;width:0;height:0}
.check .box{width:38px;height:21px;border-radius:999px;background:var(--surface-3);border:1px solid var(--stroke-2);position:relative;transition:background .25s}
.check .box::after{content:"";position:absolute;top:1.5px;left:2px;width:16px;height:16px;border-radius:50%;background:var(--muted);transition:transform .25s var(--ease),background .25s}
.check input:checked + .box{background:var(--grad);border-color:transparent}
.check input:checked + .box::after{transform:translateX(16px);background:#04121a}
.check input:focus-visible + .box{box-shadow:0 0 0 3px rgba(25,195,234,.25)}

/* range slider */
input[type=range].slider{-webkit-appearance:none;appearance:none;height:5px;border-radius:5px;background:var(--surface-3);outline:none;cursor:pointer}
input[type=range].slider::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--teal);box-shadow:0 0 10px rgba(25,195,234,.8);border:0}
input[type=range].slider::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--teal);border:0;box-shadow:0 0 10px rgba(25,195,234,.8)}

/* ---------- glass surfaces ---------- */
.card{background:var(--surface);border:1px solid var(--stroke);border-radius:var(--r);box-shadow:var(--shadow)}
.glass{background:linear-gradient(160deg,rgba(16,24,40,.7),rgba(10,15,28,.55));backdrop-filter:blur(16px);border:1px solid var(--stroke-2)}

.kicker{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-display);font-size:.72rem;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--teal);padding:5px 11px;border:1px solid var(--stroke);border-radius:999px;background:var(--surface)}

/* status pill */
.pill{display:inline-flex;align-items:center;gap:6px;font-size:.72rem;font-weight:600;padding:3px 9px;border-radius:999px;border:1px solid var(--stroke-2);background:var(--surface)}
.pill .dot{width:7px;height:7px;border-radius:50%;background:var(--dim)}
.pill.ok{color:var(--lime);border-color:rgba(158,222,63,.35)} .pill.ok .dot{background:var(--lime);box-shadow:0 0 8px var(--lime)}
.pill.warn{color:var(--amber);border-color:rgba(254,188,46,.35)} .pill.warn .dot{background:var(--amber);box-shadow:0 0 8px var(--amber)}
.pill.bad{color:var(--red);border-color:rgba(255,107,87,.35)} .pill.bad .dot{background:var(--red);box-shadow:0 0 8px var(--red)}
.pill.live .dot{background:var(--lime);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(158,222,63,.5)}70%{box-shadow:0 0 0 7px rgba(158,222,63,0)}100%{box-shadow:0 0 0 0 rgba(158,222,63,0)}}

/* KPI stat tiles (shared by Pulse + Alerts page heads) */
.kpis{display:flex;gap:12px;flex-wrap:wrap}
.kpi{
  display:flex;flex-direction:column;gap:2px;min-width:118px;
  padding:12px 16px;border-radius:var(--r);background:var(--surface);border:1px solid var(--stroke);
}
.kpi b{font-family:var(--font-display);font-size:1.45rem;font-weight:700;line-height:1.1;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.kpi span{font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--dim)}
.kpi.warn b{background:none;-webkit-text-fill-color:var(--amber);color:var(--amber)}
.kpi.good b{background:none;-webkit-text-fill-color:var(--lime);color:var(--lime)}

/* severity rollup badges — hot/cool-spot counts (shared by Pulse + Map) */
.sev-badge{
  display:inline-flex;align-items:center;gap:5px;
  font-family:var(--font-display);font-size:.7rem;font-weight:700;color:var(--c);
  padding:2px 8px;border-radius:999px;line-height:1.4;
  border:1px solid color-mix(in srgb, var(--c) 45%, transparent);
  background:color-mix(in srgb, var(--c) 13%, transparent);
}
.sev-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--c);box-shadow:0 0 6px var(--c)}
.sev-badge.ok{--c:#9ede3f;padding:2px 7px}

/* entity picker popover — device switcher (sensor) + location switcher (dashboard) */
.dev-pick{
  position:absolute;top:calc(100% + 10px);left:0;z-index:60;width:min(440px,92vw);
  padding:12px;background:rgba(10,15,28,.97);backdrop-filter:blur(18px);
}
.dev-pick .input{width:100%;margin-bottom:8px}
.dev-pick-list{max-height:340px;overflow-y:auto}
.dev-pick-group h4{
  font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--dim);
  margin:10px 4px 4px;font-weight:600;
}
.dev-pick-item{
  display:flex;align-items:center;gap:9px;width:100%;text-align:left;cursor:pointer;
  font-family:inherit;font-size:.86rem;color:var(--text);
  padding:8px 10px;border:0;border-radius:10px;background:none;transition:background .15s;
}
.dev-pick-item:hover{background:var(--surface-2)}
.dev-pick-item.active{background:var(--surface-2);outline:1px solid var(--teal)}
.dev-pick-dot{width:8px;height:8px;border-radius:50%;flex:none}
.dev-pick-dot.online{background:var(--lime);box-shadow:0 0 7px var(--lime)}
.dev-pick-dot.stale{background:var(--amber)}
.dev-pick-dot.offline{background:var(--red);opacity:.7}
.dev-pick-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dev-pick-mac{font-size:.68rem;color:var(--dim)}
.dev-pick-ago{font-size:.7rem;color:var(--dim);white-space:nowrap}
.dev-pick-none{color:var(--dim);font-size:.85rem;text-align:center;margin:14px 0}

/* analyte / filter chip row (shared by Pulse + Alerts) */
.analyte-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.an-chip{
  display:inline-flex;align-items:center;gap:7px;cursor:pointer;
  font-family:var(--font-display);font-size:.8rem;font-weight:500;color:var(--muted);
  padding:7px 13px;border-radius:999px;border:1px solid var(--stroke);background:var(--surface);
  transition:color .2s,border-color .2s,background .2s;
}
.an-chip:hover{color:var(--text);border-color:var(--stroke-2)}
.an-chip.active{color:#04121a;background:var(--grad);border-color:transparent;font-weight:600}
.an-chip.active .sensortype-icon{filter:brightness(.2) saturate(0)}

/* ============================================================
   BRAND MARK (reusable SVG-friendly wrapper)
   ============================================================ */
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{display:grid;place-items:center;filter:drop-shadow(0 0 10px rgba(25,195,234,.45))}
.brand-word{display:flex;flex-direction:column;line-height:1}
.brand-word b{font-family:var(--font-display);font-size:1.15rem;font-weight:700;letter-spacing:-.01em}
.brand-word em{font-style:normal;font-size:.52rem;letter-spacing:.32em;text-transform:uppercase;color:var(--muted);margin-top:3px}
.mark-arc{transform-origin:50% 50%;animation:spin 6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============================================================
   TOP NAV (app shell)
   ============================================================ */
.appnav{
  position:fixed;top:0;left:0;right:0;z-index:120;height:var(--nav-h);
  display:flex;align-items:center;gap:22px;padding:0 clamp(14px,3vw,26px);
  background:rgba(6,9,16,.72);backdrop-filter:blur(18px) saturate(160%);
  border-bottom:1px solid var(--stroke);
}
.appnav .brand-word b{font-size:1.05rem}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-item{position:relative}
.nav-link{display:inline-flex;align-items:center;gap:6px;font-size:.88rem;font-weight:500;color:var(--muted);
  padding:8px 12px;border-radius:10px;cursor:pointer;transition:color .2s,background .2s}
.nav-link:hover{color:var(--text);background:var(--surface)}
.nav-item.active > .nav-link{color:var(--text)}
.nav-item.active > .nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--grad);border-radius:2px}
.nav-link .caret{width:14px;height:14px;opacity:.7;transition:transform .2s}
.nav-item.open .nav-link .caret{transform:rotate(180deg)}
.dropdown{
  position:absolute;top:calc(100% + 8px);left:0;min-width:220px;padding:8px;
  background:rgba(10,15,28,.96);backdrop-filter:blur(18px);border:1px solid var(--stroke-2);
  border-radius:var(--r);box-shadow:var(--shadow);
  opacity:0;transform:translateY(-6px);pointer-events:none;transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.nav-item.open .dropdown{opacity:1;transform:none;pointer-events:auto}
.dropdown a{display:block;padding:9px 12px;border-radius:10px;font-size:.86rem;color:var(--muted);transition:background .18s,color .18s}
.dropdown a:hover{background:var(--surface-2);color:var(--text)}
.nav-spacer{margin-left:auto}
.nav-tools{display:flex;align-items:center;gap:10px}
.nav-search{position:relative;display:flex;align-items:center;gap:6px;background:var(--surface);border:1px solid var(--stroke);border-radius:999px;padding:5px 12px}
.nav-search input{background:none;border:0;outline:0;color:var(--text);font-family:inherit;font-size:.84rem;width:130px;transition:width .25s var(--ease)}
.nav-search input:focus{width:190px}
.nav-search input::placeholder{color:var(--dim)}
.nav-search svg{width:15px;height:15px;color:var(--dim)}

/* nav sensor search — global autocomplete dropdown (components/SensorSearch.js) */
.nsr-drop{
  position:absolute;top:calc(100% + 10px);right:0;width:340px;max-height:min(70vh,520px);
  overflow-y:auto;padding:8px;display:none;z-index:130;
  background:rgba(10,15,28,.97);backdrop-filter:blur(18px);
  border:1px solid var(--stroke-2);border-radius:var(--r);box-shadow:var(--shadow);
  text-align:left;cursor:auto;
}
.nsr-drop.open{display:block}
.nsr-item{
  display:flex;align-items:center;gap:10px;width:100%;padding:9px 10px;
  border:0;border-radius:10px;background:none;color:var(--text);
  font-family:inherit;text-align:left;cursor:pointer;transition:background .15s;
}
.nsr-item:hover,.nsr-item.active{background:var(--surface-2)}
.nsr-item .nsr-go{color:var(--dim);font-size:1rem}
.nsr-dot{width:8px;height:8px;border-radius:50%;flex:none;background:var(--dim)}
.nsr-dot.online{background:var(--lime);box-shadow:0 0 7px var(--lime)}
.nsr-dot.stale{background:var(--amber)}
.nsr-main{flex:1;min-width:0}
.nsr-name{display:block;font-weight:600;font-size:.86rem;line-height:1.3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nsr-sub{display:block;font-size:.72rem;color:var(--dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nsr-empty{padding:10px 12px;margin:0;color:var(--dim);font-size:.82rem;text-align:center}
.nsr-back{
  display:block;border:0;background:none;color:var(--teal);cursor:pointer;
  font-family:var(--font-display);font-size:.78rem;font-weight:600;padding:4px 10px 8px;
}
.nsr-head{display:flex;align-items:center;gap:10px;padding:0 10px 10px;border-bottom:1px solid var(--stroke)}
.nsr-head .pill{flex:none}
.nsr-vals{display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:10px}
.nsr-val{
  --c:var(--stroke-2);
  display:flex;align-items:center;gap:7px;padding:7px 9px;border-radius:10px;
  border:1px solid color-mix(in srgb, var(--c) 45%, transparent);
  background:color-mix(in srgb, var(--c) 10%, transparent);font-size:.78rem;
}
.nsr-val-label{flex:1;min-width:0;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nsr-val b{font-family:var(--font-display);font-variant-numeric:tabular-nums}
.nsr-val b i{font-style:normal;font-size:.66rem;color:var(--muted);font-weight:500;margin-left:2px}
.nsr-actions{display:flex;gap:8px;flex-wrap:wrap;padding:2px 10px 6px}

.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px;margin-left:auto}
.nav-toggle span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:.3s}

/* account chip */
.acct{display:inline-flex;align-items:center;gap:8px;padding:4px 6px 4px 12px;border-radius:999px;border:1px solid var(--stroke);background:var(--surface);cursor:pointer}
.acct .avatar{width:26px;height:26px;border-radius:50%;background:var(--grad);display:grid;place-items:center;color:#04121a;font-weight:700;font-size:.78rem;font-family:var(--font-display)}
.acct .name{font-size:.82rem;color:var(--muted)}

/* ============================================================
   PAGE LAYOUT
   ============================================================ */
.app-main{max-width:var(--maxw);margin:0 auto;padding:calc(var(--nav-h) + 26px) clamp(16px,2.5vw,40px) 60px}
.page-head{display:flex;align-items:flex-end;gap:20px;flex-wrap:wrap;margin-bottom:22px}
.page-head .titles{flex:1;min-width:240px}
.page-head h1{font-size:clamp(1.7rem,3.4vw,2.5rem)}
.page-head .subtitle{color:var(--muted);margin-top:6px;font-size:.98rem}
.page-head .head-aside{display:flex;align-items:center;gap:10px}

/* ============================================================
   MODAL (base, reusable)
   ============================================================ */
.modal-scrim{
  position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:20px;
  background:rgba(3,6,12,.72);backdrop-filter:blur(6px);
  opacity:0;pointer-events:none;transition:opacity .25s var(--ease);
}
.modal-scrim.open{opacity:1;pointer-events:auto}
.modal{
  width:100%;max-width:440px;border-radius:var(--r-lg);overflow:hidden;
  background:linear-gradient(160deg,rgba(16,24,40,.96),rgba(8,12,22,.96));
  border:1px solid var(--stroke-2);box-shadow:var(--shadow);
  transform:translateY(14px) scale(.98);transition:transform .3s var(--ease);
}
.modal-scrim.open .modal{transform:none}
.modal-head{position:relative;padding:22px 24px 0;text-align:center}
.modal-head h3{font-size:1.35rem}
.modal-head .modal-sub{color:var(--muted);font-size:.9rem;margin-top:6px}
.modal-close{position:absolute;top:14px;right:16px;background:var(--surface);border:1px solid var(--stroke);
  color:var(--muted);width:32px;height:32px;border-radius:50%;cursor:pointer;font-size:1.1rem;line-height:1;transition:.2s}
.modal-close:hover{color:var(--text);border-color:var(--stroke-2);transform:rotate(90deg)}
.modal-body{padding:22px 24px}
.modal-foot{padding:0 24px 24px}

.form-note{font-size:.85rem;min-height:1.2em;margin:10px 0 0;text-align:center}
.form-note.err{color:var(--red)} .form-note.ok{color:var(--lime)}
.btn-text{background:none;border:0;padding:0;color:var(--teal);cursor:pointer;font:inherit;font-size:.85rem}
.btn-text:hover{text-decoration:underline}
.btn-text:disabled{color:var(--dim);cursor:default;text-decoration:none}

/* input with leading icon */
.input-icon{position:relative;display:block;margin-bottom:16px}
.input-icon svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:17px;height:17px;color:var(--dim)}
.input-icon input{width:100%;padding-left:40px}
.input-icon input{font-family:inherit;font-size:.95rem;color:var(--text);padding-top:.7em;padding-bottom:.7em;
  border-radius:var(--r-sm);border:1px solid var(--stroke-2);background:rgba(5,8,15,.6);transition:border-color .2s,box-shadow .2s}
.input-icon input:focus{outline:0;border-color:var(--teal);box-shadow:0 0 0 3px rgba(25,195,234,.2)}
.input-icon input:focus + svg,.input-icon:focus-within svg{color:var(--teal)}

/* ============================================================
   FOOTER
   ============================================================ */
.appfoot{border-top:1px solid var(--stroke);margin-top:40px;padding:34px clamp(14px,3vw,28px);
  color:var(--dim);font-size:.82rem;background:linear-gradient(180deg,transparent,rgba(10,15,28,.5))}
.appfoot .foot-inner{max-width:var(--maxw);margin:0 auto;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
.appfoot a{color:var(--muted)}.appfoot a:hover{color:var(--teal)}
.appfoot .foot-links{display:flex;gap:18px;flex-wrap:wrap}

/* ---------- page boot veil ----------
   Static markup in the page HTML (paints before any JS), removed by the page
   controller at first real paint via bootDone() (core/dom.js). Sits under the
   nav (z 120) and modals (z 200) so the shell stays visible and login can
   surface above it. */
.page-boot{
  position:fixed;inset:0;z-index:100;display:flex;flex-direction:column;gap:16px;
  align-items:center;justify-content:center;background:var(--bg);
}
.pb-ring{
  width:46px;height:46px;border-radius:50%;
  background:conic-gradient(from 0deg,var(--teal),var(--lime),transparent 70%);
  -webkit-mask:radial-gradient(farthest-side,transparent calc(100% - 4px),#000 calc(100% - 3.5px));
  mask:radial-gradient(farthest-side,transparent calc(100% - 4px),#000 calc(100% - 3.5px));
  animation:pb-spin .9s linear infinite;
}
.pb-label{color:var(--dim);font-size:.85rem;letter-spacing:.08em;animation:pb-pulse 1.8s ease-in-out infinite}
@keyframes pb-spin{to{transform:rotate(1turn)}}
@keyframes pb-pulse{50%{opacity:.45}}

/* ---------- utility ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

@media(max-width:920px){
  .nav-menu,.nav-search{display:none}
  .nav-toggle{display:flex}
  .appnav{gap:12px;flex-wrap:wrap}
  /* hamburger panel: nav menu becomes a full-width vertical sheet under the bar */
  .appnav.mobile-open{height:auto;padding-bottom:14px;background:rgba(6,9,16,.97)}
  .appnav.mobile-open .nav-menu{
    display:flex;flex-direction:column;align-items:stretch;gap:2px;
    order:10;width:100%;margin:6px 0 0;padding-top:10px;border-top:1px solid var(--stroke);
  }
  .appnav.mobile-open .nav-link{padding:13px 12px;font-size:1rem;border-radius:10px}
  .appnav.mobile-open .dropdown{
    position:static;min-width:0;opacity:1;transform:none;pointer-events:auto;
    display:none;background:transparent;border:0;box-shadow:none;padding:0 0 4px 22px;
  }
  .appnav.mobile-open .nav-item.open .dropdown{display:block}
  .appnav.mobile-open .nav-item.active > .nav-link::after{display:none}
  .appnav.mobile-open .nav-tools{order:11;width:100%;justify-content:flex-start;flex-wrap:wrap}
  /* sensor search comes back inside the hamburger panel */
  .appnav.mobile-open .nav-search{display:flex;flex:1;min-width:100%;flex-wrap:wrap;border-radius:18px}
  .appnav.mobile-open .nav-search input{flex:1;width:auto}
  .appnav.mobile-open .nsr-drop{
    position:static;width:100%;max-height:55vh;margin-top:6px;
    border:0;box-shadow:none;background:none;backdrop-filter:none;padding:4px 0 0;
  }
  .nav-toggle{order:5}
  .appnav.mobile-open + * , .appnav.mobile-open ~ main{transition:none}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.12s!important}
  .reveal{opacity:1;transform:none}
}