/* Flumetra Beta: loop-telemetry storytelling. One motion system, orchestrated. */
:root{
  --bg:#0A111C; --panel:#111D2E; --ink:#E9F0F7; --mut:#94B2D1; --dim:#7C90A6;
  --cyan:#4FD6EC; --cyan-dim:rgba(79,214,236,.16); --amber:#F0A63C;
  --ease-out:cubic-bezier(0.23,1,0.32,1); --ease-in-out:cubic-bezier(0.77,0,0.175,1);
  --wrap:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.02rem/1.65 Archivo,system-ui,sans-serif;-webkit-font-smoothing:antialiased}
::selection{background:var(--cyan);color:#06222b}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:2px}
body::-webkit-scrollbar{width:12px}
body::-webkit-scrollbar-track{background:var(--bg)}
body::-webkit-scrollbar-thumb{background:#1c3049;border-radius:6px;border:3px solid var(--bg)}
body::-webkit-scrollbar-thumb:hover{background:#2a4666}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}
.mono{font-family:"IBM Plex Mono",monospace}
a{color:var(--cyan)}

/* flow progress: coolant travelled = page read */
.flowbar{position:fixed;inset:0 0 auto 0;height:3px;z-index:60;pointer-events:none}
.flowbar-line{position:absolute;inset:0;background:linear-gradient(90deg,var(--cyan),#7ce4f5);transform-origin:0 50%;transform:scaleX(var(--p,0))}
.flowbar-dot{position:absolute;top:-2.5px;left:0;width:8px;height:8px;border-radius:50%;background:#d9f7fd;box-shadow:0 0 10px 2px rgba(79,214,236,.75);transform:translateX(calc(var(--p,0)*100vw - 4px))}

.nav{position:fixed;top:3px;left:0;right:0;z-index:50;display:flex;justify-content:space-between;align-items:center;padding:14px 28px;background:linear-gradient(180deg,rgba(10,17,28,.92),rgba(10,17,28,0));backdrop-filter:blur(8px)}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:700;font-size:1.08rem;letter-spacing:.01em}
.brand svg{width:30px;height:30px}
.beta-tag{font:600 .62rem/1 Archivo,system-ui,sans-serif;letter-spacing:.18em;text-transform:uppercase;color:var(--mut);border:1px solid rgba(148,178,209,.4);border-radius:999px;padding:4px 8px 3px;margin-left:2px}
.btn{display:inline-block;background:var(--cyan);color:#06222b;font-weight:600;text-decoration:none;padding:12px 22px;border-radius:10px;transition:transform .16s var(--ease-out),box-shadow .16s var(--ease-out)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid #2a4260}
@media (hover:hover) and (pointer:fine){
  .btn:hover{transform:translateY(-2px);box-shadow:0 6px 22px -6px rgba(79,214,236,.45)}
  .btn.ghost:hover{box-shadow:0 6px 22px -8px rgba(148,178,209,.35)}
}

/* hero */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;overflow:hidden;padding:120px 0 80px}
body:not(.js) .hero{min-height:700px}
.hero-loop{position:absolute;inset:0;width:100%;height:100%;z-index:0;opacity:.55;-webkit-mask-image:linear-gradient(100deg,rgba(0,0,0,.12) 34%,#000 62%);mask-image:linear-gradient(100deg,rgba(0,0,0,.12) 34%,#000 62%)}
.loop-cold,.loop-warm{fill:none;stroke-width:3;stroke-linecap:round}
.loop-cold{stroke:var(--cyan);stroke-dasharray:14 22;animation:flow 2.6s linear infinite;filter:drop-shadow(0 0 6px rgba(79,214,236,.35))}
.loop-warm{stroke:rgba(240,166,60,.5);stroke-dasharray:10 26;animation:flow 3.4s linear infinite reverse}
.loop-nodes circle{fill:var(--bg);stroke:var(--cyan);stroke-width:2;animation:node-pulse 3s var(--ease-in-out) infinite}
.loop-nodes circle:nth-child(2){animation-delay:1s}
.loop-nodes circle:nth-child(3){animation-delay:2s}
@keyframes flow{to{stroke-dashoffset:-36}}
@keyframes node-pulse{0%,100%{stroke-opacity:.4}50%{stroke-opacity:1}}
.hero-in{position:relative;z-index:1}
.hero-in::before{content:"";position:absolute;inset:-60px -80px -50px -60px;background:radial-gradient(ellipse at 32% 42%,rgba(10,17,28,.88) 30%,rgba(10,17,28,0) 72%);z-index:-1;pointer-events:none}
h1{text-shadow:0 2px 26px rgba(10,17,28,.85)}
h1{font-size:clamp(2.5rem,5.6vw,4.4rem);line-height:1.08;font-weight:600;letter-spacing:-0.02em;margin:0 0 22px;font-stretch:112%;text-wrap:balance}
.accent{color:var(--cyan)}
.lede{font-size:clamp(1.05rem,1.6vw,1.25rem);color:var(--mut);max-width:56ch;margin:0 0 30px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{display:flex;gap:14px;flex-wrap:wrap;margin:24px 0 0}
.hero-meta .mono{font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--dim);border:1px solid rgba(148,178,209,.22);border-radius:8px;padding:6px 11px}
.telemetry{position:absolute;right:36px;bottom:34px;z-index:1;display:flex;gap:26px;margin:0;padding:16px 22px;background:rgba(17,29,46,.72);border:1px solid rgba(79,214,236,.18);border-radius:14px;backdrop-filter:blur(6px)}
.telemetry>div{display:flex;flex-direction:column;gap:2px}
.telemetry dt{font:500 .6rem/1 "IBM Plex Mono",monospace;letter-spacing:.16em;color:var(--dim)}
.telemetry dd{margin:0;font:600 1.25rem/1 "IBM Plex Mono",monospace;color:var(--cyan);font-variant-numeric:tabular-nums}
.telemetry-note{position:absolute;right:10px;bottom:-20px;font:italic 400 .68rem/1 Archivo,system-ui,sans-serif;color:var(--dim);letter-spacing:.04em}

/* connectors: the loop line running between sections; overlaps section padding so the line touches both */
.connector{display:flex;justify-content:center;height:240px;margin:-48px 0;position:relative;z-index:0;pointer-events:none}
.connector svg{height:100%;overflow:visible}
.conn-path{stroke:var(--cyan);stroke-width:2.5;fill:none;stroke-linecap:round;stroke-dasharray:480;stroke-dashoffset:0;transition:stroke-dashoffset 1.1s var(--ease-out)}
.conn-node{fill:var(--bg);stroke:var(--cyan);stroke-width:2;opacity:1;transition:opacity .4s var(--ease-out) .7s}
.conn-core{fill:var(--cyan)}
.conn-tag{font:500 9.5px "IBM Plex Mono",monospace;fill:var(--dim);letter-spacing:.08em}
.js .connector:not(.drawn) .conn-path{stroke-dashoffset:480}
.js .connector:not(.drawn) .conn-node{opacity:0}
.js .connector:not(.drawn) .conn-core,.js .connector:not(.drawn) .conn-tag{opacity:0}
.conn-core,.conn-tag{transition:opacity .4s var(--ease-out) .7s}

/* acts */
.act{padding:70px 0}
h2{font-size:clamp(1.7rem,3.4vw,2.5rem);line-height:1.08;font-weight:600;letter-spacing:-0.02em;margin:0 0 20px;font-stretch:108%;text-wrap:balance}
h3{font-weight:600;letter-spacing:-0.01em}
.body-max{max-width:68ch;color:var(--mut);font-size:1.06rem}

.signals{list-style:none;margin:40px 0 0;padding:0;display:flex;flex-direction:column;gap:2px}
.signals li{display:grid;grid-template-columns:200px 1fr 170px;gap:22px;align-items:center;padding:18px 20px;background:var(--panel);border-bottom:1px solid rgba(148,178,209,.09)}
.signals li:first-child{border-radius:12px 12px 0 0}
.signals li:last-child{border-radius:0 0 12px 12px;border-bottom:none}
.sig-name{font-weight:600}
.sig-track{height:4px;background:rgba(148,178,209,.14);border-radius:2px;overflow:hidden}
.sig-fill{display:block;height:100%;background:var(--cyan);border-radius:2px;transform:scaleX(var(--fill,1));transform-origin:0 50%;transition:transform 1.3s var(--ease-out) .15s}
.sig-fill.warn{background:var(--amber)}
.js .sig-fill{transform:scaleX(0)}
.js .in-view .sig-fill{transform:scaleX(var(--fill,1))}
.sig-read{font-size:.78rem;color:var(--amber);text-align:right;letter-spacing:.04em}
.sig-caption{color:var(--dim);font-size:.92rem;max-width:60ch;margin-top:18px}

.steps{list-style:none;counter-reset:step;margin:44px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:34px}
.steps li{position:relative;padding-top:14px;border-top:2px solid rgba(79,214,236,.25)}
.step-n{position:absolute;top:-16px;left:0;background:var(--bg);padding-right:12px;font-family:Archivo,system-ui,sans-serif;font-size:1.5rem;font-weight:600;color:var(--cyan)}
.steps h3{margin:14px 0 8px;font-size:1.22rem;letter-spacing:-0.01em}
.steps p{margin:0;color:var(--mut);font-size:.98rem}

/* services: calm card grid, same pattern as the live site's "Six services" section */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:38px}
.svc{display:flex;flex-direction:column;background:var(--panel);border:1px solid rgba(148,178,209,.14);border-radius:14px;padding:24px 24px 20px;color:var(--ink);text-decoration:none;transition:border-color .18s var(--ease-out),transform .18s var(--ease-out)}
.svc-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.svc-ico{color:var(--dim);transition:color .18s var(--ease-out)}
.svc-ico svg{width:24px;height:24px;display:block}
.svc-code{font-size:.74rem;font-weight:500;letter-spacing:.08em;color:var(--cyan)}
.svc h3{margin:0 0 8px;font-size:1.14rem}
.svc p{margin:0 0 18px;color:var(--mut);font-size:.94rem;line-height:1.55;flex:1}
.svc-more{font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);display:inline-flex;align-items:center;gap:7px;transition:color .18s var(--ease-out)}
.svc-more svg{width:14px;height:14px;transition:transform .18s var(--ease-out)}
@media (hover:hover) and (pointer:fine){
  .svc:hover{border-color:rgba(79,214,236,.55);transform:translateY(-3px)}
  .svc:hover .svc-ico,.svc:hover .svc-more{color:var(--cyan)}
  .svc:hover .svc-more svg{transform:translateX(3px)}
}
.proof{margin-top:34px;font-size:1.14rem;color:var(--mut)}
.proof strong{color:var(--ink);font-weight:700}

/* faq */
.faq-list{margin-top:26px;border-top:1px solid rgba(79,214,236,.16);max-width:820px}
.faq-item{border-bottom:1px solid rgba(79,214,236,.16)}
.faq-item summary{cursor:pointer;padding:18px 42px 18px 0;font-weight:600;font-size:1.05rem;list-style:none;position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"";position:absolute;right:8px;top:50%;width:14px;height:14px;transform:translateY(-50%);background:linear-gradient(#4FD6EC,#4FD6EC) center/14px 2.5px no-repeat,linear-gradient(#4FD6EC,#4FD6EC) center/2.5px 14px no-repeat;transition:transform .2s var(--ease-out)}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-item p{margin:0 0 18px;color:var(--mut);max-width:70ch}

/* close */
.close{padding:90px 20px 100px;text-align:left}
.close .wrap{background:linear-gradient(135deg,#0f2233,#123043);border:1px solid rgba(79,214,236,.22);border-radius:20px;padding:56px 48px}
.close p{color:var(--mut);max-width:52ch;margin:0 0 26px}
footer{border-top:1px solid rgba(148,178,209,.12);padding:26px 0}
.nowrap{white-space:nowrap}

/* reveal system: visible by default, animated when JS arms it */
.js .rv{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
.js .in-view .rv,.js .rv.in-view{opacity:1;transform:none}
.js .in-view .rv:nth-child(2){transition-delay:.06s}
.js .in-view .rv:nth-child(3){transition-delay:.12s}
.js .in-view .rv:nth-child(4){transition-delay:.18s}
.js .in-view .signals li:nth-child(2){transition-delay:.08s}
.js .in-view .signals li:nth-child(3){transition-delay:.16s}
.js .in-view .steps li:nth-child(2){transition-delay:.08s}
.js .in-view .steps li:nth-child(3){transition-delay:.16s}
.js .in-view .svc-grid .svc:nth-child(2){transition-delay:.05s}
.js .in-view .svc-grid .svc:nth-child(3){transition-delay:.1s}
.js .in-view .svc-grid .svc:nth-child(4){transition-delay:.15s}
.js .in-view .svc-grid .svc:nth-child(5){transition-delay:.2s}
.js .in-view .svc-grid .svc:nth-child(6){transition-delay:.25s}

@media (max-width:620px){
  .nav{padding:12px 14px}
  .brand{font-size:.98rem;gap:7px}
  .brand svg{width:26px;height:26px}
  .beta-tag{display:none}
  .btn{padding:10px 14px;font-size:.88rem}
}
@media (max-width:900px){
  .hero{flex-direction:column;align-items:stretch;min-height:auto;padding-top:110px}
  .hero + .connector{margin-top:-36px}
  .hero-loop{opacity:.32;-webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.1) 22%,#000 72%);mask-image:linear-gradient(180deg,rgba(0,0,0,.1) 22%,#000 72%)}
  .signals li{grid-template-columns:1fr;gap:10px;padding:16px}
  .sig-read{text-align:left}
  .steps{grid-template-columns:1fr;gap:30px}
  .svc-grid{grid-template-columns:1fr 1fr;gap:14px}
  .telemetry{position:static;margin:34px 28px 0;width:fit-content}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .loop-cold,.loop-warm,.loop-nodes circle{animation:none}
  .js .rv{opacity:1;transform:none;transition:opacity .3s ease}
  .conn-path{stroke-dashoffset:0;transition:none}
  .conn-node{opacity:1;transition:none}
  .sig-fill{transform:scaleX(var(--fill,1));transition:none}
  .flowbar-dot{box-shadow:none}
}

/* full header + footer (beta parity with the live shell) */
.nav-links{display:flex;gap:24px;flex-wrap:wrap}
.nav-links a{color:var(--ink);text-decoration:none;font-weight:500;font-size:.94rem;border-bottom:2px solid transparent;padding-bottom:2px;transition:border-color .16s var(--ease-out)}
@media (hover:hover) and (pointer:fine){.nav-links a:hover{border-color:var(--cyan)}}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px;padding:44px 28px 22px}
.foot-grid h4{font:600 .7rem/1 Archivo,system-ui,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);margin:0 0 14px}
.foot-grid ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.foot-grid a{color:var(--mut);text-decoration:none;font-size:.92rem}
@media (hover:hover) and (pointer:fine){.foot-grid a:hover{color:var(--ink)}}
.foot-brand{color:var(--ink);text-decoration:none;font-weight:700;display:inline-flex;align-items:center;gap:9px;margin-bottom:12px}
.foot-note{color:var(--dim);font-size:.88rem;max-width:34ch;margin:0}
.foot-dim{color:var(--dim);font-size:.92rem}
.foot-legal{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--dim);font-size:.84rem;padding:16px 28px 4px;border-top:1px solid rgba(148,178,209,.12)}
.foot-legal a{color:var(--mut)}

@media (max-width:900px){
  .nav{flex-wrap:wrap;row-gap:8px;padding-bottom:10px;background:rgba(10,17,28,.94)}
  .nav-links{order:3;width:100%;gap:16px;overflow-x:auto;padding:4px 2px 2px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .nav-links::-webkit-scrollbar{display:none}
  .nav-links a{font-size:.86rem;white-space:nowrap}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:620px){
  .foot-grid{grid-template-columns:1fr}
  .svc-grid{grid-template-columns:1fr}
  .close .wrap{padding:44px 26px}
}