/* lockedown.com — data-hall elevation theme
   Palette: graphite ground, steel neutrals biased toward the signal blue,
   amber reserved exclusively for status/activity LEDs. Single-theme on
   purpose: the subject is a dark room. */

:root{
  --ink:#0a0e12;
  --deck:#111821;
  --deck-2:#151f29;
  --rail:#1e2b36;
  --rail-hole:#070b0e;
  --text:#e6edf3;
  --muted:#8697a6;
  --dim:#5d6d7b;
  --signal:#47b6d8;
  --signal-dp:#2a8db0;
  --power:#f5a524;
  --wrap:1140px;
  --sans:"IBM Plex Sans",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --disp:"Saira",var(--sans);
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--ink);color:var(--text);
  font-family:var(--sans);font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img,svg,canvas{max-width:100%}
a{color:var(--signal);text-decoration:none}
a:hover{color:#6fcbe8}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:3px}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding-inline:24px}
@media (max-width:560px){.wrap{padding-inline:18px}}

/* ── type ─────────────────────────────────────────────────────────────── */
h1,h2,h3{font-family:var(--disp);font-weight:700;letter-spacing:-.02em;
         line-height:1.08;margin:0;text-wrap:balance}
h1{font-size:clamp(34px,5.6vw,60px)}
h2{font-size:clamp(26px,3.4vw,38px)}
h3{font-size:19px;letter-spacing:-.01em}
p{margin:0}
.lede{font-size:clamp(16px,1.6vw,19px);line-height:1.7;color:var(--muted);max-width:60ch}
.eyebrow{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.22em;
         text-transform:uppercase;color:var(--signal);margin:0}
.stack{display:flex;flex-direction:column;gap:18px;align-items:flex-start}

/* ── scroll reveal ────────────────────────────────────────────────────── */
.rv{opacity:0;transform:translateY(16px);
    transition:opacity .75s cubic-bezier(.22,.8,.3,1),transform .75s cubic-bezier(.22,.8,.3,1)}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
}

/* ── status LED ───────────────────────────────────────────────────────── */
.led{width:7px;height:7px;border-radius:50%;flex:0 0 7px;background:var(--dim)}
.led.on{background:var(--power);box-shadow:0 0 8px rgba(245,165,36,.65);
        animation:blink 3.2s ease-in-out infinite}
@keyframes blink{0%,44%,100%{opacity:1}52%,66%{opacity:.28}}

/* ── animated data bus divider ────────────────────────────────────────── */
.bus{height:2px;border:0;margin:0;background-repeat:repeat-x;background-size:210px 2px;
     background-image:repeating-linear-gradient(90deg,
       rgba(71,182,216,0) 0 12px,rgba(71,182,216,.5) 12px 26px,rgba(71,182,216,0) 26px 52px);
     animation:bus 3s linear infinite;opacity:.75}
@keyframes bus{to{background-position:210px 0}}

/* ── header ───────────────────────────────────────────────────────────── */
.topbar{border-bottom:1px solid var(--rail);background:rgba(10,14,18,.92);
        backdrop-filter:blur(8px);position:sticky;top:0;z-index:40}
.topbar .wrap{display:flex;align-items:center;gap:20px;min-height:68px}
.brand{display:flex;align-items:center;gap:11px;color:var(--text);flex:0 0 auto}
.brand .mark{width:31px;height:31px;color:var(--signal);flex:0 0 31px}
.brand .mark .pulse{animation:markpulse 2.4s ease-in-out infinite}
@keyframes markpulse{0%,100%{opacity:1}50%{opacity:.25}}
.brand b{font-family:var(--disp);font-size:19px;font-weight:700;letter-spacing:.08em;
         text-transform:uppercase}
.brand b i{font-style:normal;color:var(--signal)}
.nav{display:flex;gap:26px;margin-left:auto;align-items:center}
.nav a{font-size:14px;color:var(--muted)}
.nav a:hover,.nav a[aria-current]{color:var(--text)}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--rail);
        border-radius:7px;width:40px;height:36px;cursor:pointer;padding:9px}
.burger span{display:block;height:1.6px;background:var(--text);border-radius:2px}
.burger span+span{margin-top:4.4px}
.mnav{display:none;border-bottom:1px solid var(--rail);background:var(--deck)}
.mnav.open{display:block}
.mnav a{display:block;padding:13px 24px;color:var(--text);font-size:15px;
        border-top:1px solid var(--rail)}
@media (max-width:820px){.nav{display:none}.burger{display:block}}

/* ── buttons ──────────────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;gap:9px;font-size:14.5px;font-weight:600;
     padding:12px 22px;border-radius:8px;border:1px solid var(--rail);color:var(--text);
     background:transparent;cursor:pointer;font-family:var(--sans);
     transition:border-color .18s ease,background .18s ease,transform .18s ease}
.btn:hover{border-color:var(--signal-dp);color:var(--text);transform:translateY(-1px)}
.btn-primary{background:var(--signal);border-color:var(--signal);color:#04161d}
.btn-primary:hover{background:#64c6e4;border-color:#64c6e4;color:#04161d}
.btns{display:flex;flex-wrap:wrap;gap:12px}

/* ── sections ─────────────────────────────────────────────────────────── */
.band{border-bottom:1px solid var(--rail);padding-block:clamp(56px,7vw,88px)}
.band-head{display:flex;flex-direction:column;gap:14px;margin-bottom:38px;max-width:64ch}

/* ── hero ─────────────────────────────────────────────────────────────── */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--rail);
      padding-block:clamp(52px,8vw,96px);
      background:
        radial-gradient(900px 420px at 88% -8%,rgba(71,182,216,.13),transparent 62%),
        radial-gradient(560px 300px at 4% 104%,rgba(245,165,36,.07),transparent 66%)}
.hero .wrap{position:relative;z-index:1;
            display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);
            gap:clamp(34px,5vw,64px);align-items:center}
@media (max-width:900px){.hero .wrap{grid-template-columns:1fr}}

canvas.field{position:absolute;inset:0;width:100%;height:100%;display:block;z-index:0;
  opacity:.5;pointer-events:none;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 14%,#000 86%,transparent);
          mask-image:linear-gradient(90deg,transparent,#000 14%,#000 86%,transparent)}
@media (max-width:900px){canvas.field{opacity:.26}}

/* ── cabinet elevation ────────────────────────────────────────────────── */
.cab{border:1px solid var(--rail);border-radius:12px;background:var(--deck);overflow:hidden}
.cab-head{display:flex;align-items:center;justify-content:space-between;gap:14px;
          padding:13px 16px;border-bottom:1px solid var(--rail);background:var(--deck-2);
          font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase}
.cab-head .t{color:var(--text);font-weight:600}
.cab-head .m{color:var(--dim)}
.cab-body{display:flex;align-items:stretch;position:relative}
.cab-body::after{content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(71,182,216,0) 0%,rgba(71,182,216,.13) 46%,
             rgba(71,182,216,.2) 50%,rgba(71,182,216,.13) 54%,rgba(71,182,216,0) 100%);
  background-size:100% 44%;background-repeat:no-repeat;
  animation:scan 4.6s linear infinite}
@keyframes scan{0%{background-position:0 -60%}100%{background-position:0 160%}}
.railstrip{flex:0 0 13px;border-inline:1px solid var(--rail);
  background:repeating-linear-gradient(to bottom,
    transparent 0 9px,var(--rail-hole) 9px 14px,transparent 14px 23px)}
.ustack{flex:1 1 auto;list-style:none;margin:0;padding:0;min-width:0}
.ustack li{display:flex;align-items:center;gap:12px;padding:15px 16px;
           border-bottom:1px solid var(--rail)}
.ustack li:last-child{border-bottom:0}
.ustack .u{font-family:var(--mono);font-size:11.5px;font-weight:600;color:var(--signal);
           letter-spacing:.06em;flex:0 0 32px;font-variant-numeric:tabular-nums}
.ustack .lbl{flex:1 1 auto;font-size:14.5px;color:var(--text);min-width:0}
.ustack .bar{flex:0 0 52px;height:4px;border-radius:2px;
             background:rgba(134,151,166,.14);overflow:hidden}
.ustack .bar i{display:block;height:100%;border-radius:2px;width:18%;
  background:linear-gradient(90deg,var(--signal-dp),var(--signal));
  animation:meter 3.8s ease-in-out infinite}
@keyframes meter{0%,100%{width:16%}30%{width:88%}55%{width:44%}78%{width:70%}}
.ustack li.idle .lbl{color:var(--dim)}
.ustack li.idle .bar i{animation:none;width:0}
.ustack li:nth-child(2) .bar i,.ustack li:nth-child(2) .led{animation-delay:-.9s}
.ustack li:nth-child(3) .bar i,.ustack li:nth-child(3) .led{animation-delay:-1.9s}
.ustack li:nth-child(4) .bar i,.ustack li:nth-child(4) .led{animation-delay:-2.7s}
.ustack li:nth-child(2) .bar i{animation-duration:3.1s}
.ustack li:nth-child(3) .bar i{animation-duration:4.4s}
.ustack li:nth-child(4) .bar i{animation-duration:2.7s}
@media (max-width:560px){.ustack .bar{display:none}.ustack li{padding:13px 12px}}

/* ── data-hall canvas ─────────────────────────────────────────────────── */
.hallwrap{border:1px solid var(--rail);border-radius:12px;background:var(--deck);overflow:hidden}
.hallhead{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;justify-content:space-between;
  padding:13px 16px;border-bottom:1px solid var(--rail);background:var(--deck-2);
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim)}
.hallhead .t{color:var(--text);font-weight:600}
.hallhead .flow b{color:var(--signal);font-weight:600}
.hallhead .flow s{text-decoration:none;color:var(--power)}
.hall{display:block;width:100%;height:auto;aspect-ratio:1120/520;background:transparent}
@media (max-width:760px){.hall{aspect-ratio:5/6}}
.halllegend{display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;
  padding:12px 16px;border-top:1px solid var(--rail);
  font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim)}
.halllegend i{display:inline-block;width:8px;height:8px;border-radius:2px;
              margin-right:7px;vertical-align:-1px}
.halllegend .cap{margin-left:auto;text-transform:none;letter-spacing:.02em;font-style:italic}

/* ── cards ────────────────────────────────────────────────────────────── */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
@media (max-width:900px){.cards{grid-template-columns:1fr}}
.card{position:relative;border:1px solid var(--rail);border-radius:12px;background:var(--deck);
      padding:26px 24px 28px;display:flex;flex-direction:column;gap:12px;overflow:hidden;
      transition:border-color .2s ease,transform .2s ease}
.card:hover{border-color:var(--signal-dp);transform:translateY(-2px)}
.card::after{content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--signal),transparent);
  opacity:0;transition:opacity .25s ease}
.card:hover::after{opacity:.9}
.card .ico{width:34px;height:34px;color:var(--signal)}
.card .tag{font-family:var(--mono);font-size:10.5px;letter-spacing:.2em;
           text-transform:uppercase;color:var(--dim)}
.card p{color:var(--muted);font-size:14.6px;line-height:1.68}

/* ── process ──────────────────────────────────────────────────────────── */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
       background:var(--rail);border:1px solid var(--rail);border-radius:12px;overflow:hidden}
@media (max-width:980px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.steps{grid-template-columns:1fr}}
.step{position:relative;background:var(--deck);padding:28px 22px 26px;
      display:flex;flex-direction:column;gap:10px}
.step::before{content:"";position:absolute;left:0;top:0;height:2px;width:0;
  background:linear-gradient(90deg,var(--signal),var(--power));
  transition:width 1s cubic-bezier(.22,.8,.3,1)}
.steps.in .step::before{width:100%}
.steps.in .step:nth-child(2)::before{transition-delay:.18s}
.steps.in .step:nth-child(3)::before{transition-delay:.36s}
.steps.in .step:nth-child(4)::before{transition-delay:.54s}
@media (prefers-reduced-motion:reduce){.step::before{width:100%;transition:none}}
.step .n{font-family:var(--mono);font-size:12px;font-weight:600;color:var(--power);
         letter-spacing:.14em;font-variant-numeric:tabular-nums}
.step h3{font-size:17px}
.step p{color:var(--muted);font-size:14.3px;line-height:1.66}

/* ── spec table ───────────────────────────────────────────────────────── */
.specwrap{overflow-x:auto;border:1px solid var(--rail);border-radius:12px;background:var(--deck)}
.spec{width:100%;border-collapse:collapse;min-width:560px}
.spec th,.spec td{text-align:left;padding:15px 18px;border-bottom:1px solid var(--rail);
                  vertical-align:middle}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:0}
.spec tr:hover th,.spec tr:hover td{background:rgba(71,182,216,.045)}
.spec th{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
         color:var(--signal);font-weight:500;white-space:nowrap;width:1%}
.spec th span{display:flex;align-items:center;gap:11px}
.spec th svg{width:19px;height:19px;flex:0 0 19px}
.spec td{color:var(--muted);font-size:14.6px}

/* ── contact ──────────────────────────────────────────────────────────── */
.cgrid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);
       gap:clamp(26px,4vw,52px);align-items:start}
@media (max-width:900px){.cgrid{grid-template-columns:1fr}}
.form{display:flex;flex-direction:column;gap:16px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:560px){.row2{grid-template-columns:1fr}}
.field-g{display:flex;flex-direction:column;gap:7px;min-width:0}
.field-g label{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;
               text-transform:uppercase;color:var(--dim)}
.field-g input,.field-g select,.field-g textarea{
  width:100%;background:var(--deck);color:var(--text);border:1px solid var(--rail);
  border-radius:8px;padding:12px 13px;font-family:var(--sans);font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease}
.field-g textarea{min-height:142px;resize:vertical;line-height:1.6}
.field-g input:focus,.field-g select:focus,.field-g textarea:focus{
  outline:none;border-color:var(--signal);box-shadow:0 0 0 3px rgba(71,182,216,.13)}
.field-g input::placeholder,.field-g textarea::placeholder{color:#4e5d69}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.note{font-size:13px;color:var(--dim)}
.msg{display:none;border-radius:8px;padding:13px 15px;font-size:14.5px;border:1px solid}
.msg.show{display:block}
.msg.ok{border-color:#2f6f4f;background:rgba(47,111,79,.16);color:#8fe0b4}
.msg.bad{border-color:#7a3b3b;background:rgba(122,59,59,.16);color:#f0a9a9}

.panel{border:1px solid var(--rail);border-radius:12px;background:var(--deck);padding:26px 24px}
.panel h3{margin-bottom:4px}
.dl{margin:0;display:flex;flex-direction:column;gap:16px}
.dl .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;
       text-transform:uppercase;color:var(--dim);margin-bottom:3px}
.dl .v{font-size:15px;color:var(--text);word-break:break-word}

/* ── footer ───────────────────────────────────────────────────────────── */
.foot{padding-block:34px;color:var(--dim);font-size:13.5px}
.foot .wrap{display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center;
            justify-content:space-between}
.foot a{color:var(--muted)}
.foot a:hover{color:var(--text)}

/* ── any section that hosts an ambient field canvas ───────────────────── */
.fieldhost{position:relative;overflow:hidden}
.fieldhost > .wrap{position:relative;z-index:1}