/* ==========================================================
   WK Networks - styles.css (tema claro)
   Tipos: Archivo (display) · IBM Plex Sans (texto) · IBM Plex Mono (rótulos)
   ========================================================== */

:root{
  --bg:#F7F9FB;
  --bg-alt:#EEF3F7;
  --surface:#FFFFFF;
  --text:#16233A;
  --muted:#5B6B82;
  --line:#DEE6EE;
  --line-strong:#C8D4E0;
  --scan:#0E78AC;
  --scan-bright:#1593CF;
  --scan-tint:#E3F1F8;
  --block:#E04A42;
  --radius:4px;
  --maxw:1180px;
  --shadow:0 10px 30px rgba(22,35,58,.08);
  --font-display:"Archivo",system-ui,sans-serif;
  --font-body:"IBM Plex Sans",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  font-size:16px;line-height:1.6;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;display:block}
a{color:inherit}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.mono{font-family:var(--font-mono)}
.accent{color:var(--scan)}

h1,h2,h3{font-family:var(--font-display);line-height:1.12;letter-spacing:-.015em}
h1{font-size:clamp(2.1rem,4.6vw,3.4rem);font-weight:700}
h2{font-size:clamp(1.7rem,3.2vw,2.4rem);font-weight:700}
h3{font-size:1.15rem;font-weight:600}

.eyebrow{
  font-family:var(--font-mono);
  font-size:.74rem;letter-spacing:.22em;
  color:var(--scan);margin-bottom:14px;
}

/* ---------- botões ---------- */
.btn{
  display:inline-block;padding:13px 26px;border-radius:var(--radius);
  font-family:var(--font-display);font-weight:600;font-size:.95rem;
  text-decoration:none;border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,border-color .18s ease,color .18s ease,transform .12s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--scan);color:#FFFFFF}
.btn-primary:hover{background:var(--scan-bright)}
.btn-ghost{border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--scan);color:var(--scan)}
.btn-block{width:100%}
:focus-visible{outline:2px solid var(--scan);outline-offset:3px;border-radius:2px}

/* ==========================================================
   HEADER
   ========================================================== */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(247,249,251,.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:32px;height:68px}
.brand{display:flex;align-items:center;text-decoration:none}
.brand-logo{height:42px;width:auto;display:block}
.nav{display:flex;gap:26px;margin-left:auto}
.nav a{
  text-decoration:none;color:var(--muted);font-size:.92rem;font-weight:500;
  padding:4px 0;border-bottom:1px solid transparent;transition:color .15s,border-color .15s;
}
.nav a:hover{color:var(--text);border-color:var(--scan)}
.header-cta{padding:10px 18px;font-size:.85rem}
.nav-toggle{display:none;background:none;border:0;width:40px;height:40px;cursor:pointer;flex-direction:column;justify-content:center;gap:6px;align-items:center}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--text);transition:transform .2s,opacity .2s}
.nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(4px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-4px) rotate(-45deg)}

/* ==========================================================
   HERO + DIAGRAMA
   ========================================================== */
.hero{
  background:
    radial-gradient(1100px 480px at 80% 0%, rgba(21,147,207,.10), transparent 60%),
    linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  padding:84px 0 64px;
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:minmax(0,46%) minmax(0,54%);gap:48px;align-items:center}
.lead{color:var(--muted);font-size:1.08rem;margin:20px 0 28px;max-width:46ch}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}

.hero-visual{min-width:0}
#flowSvg{width:100%;height:auto}
.lanes path{fill:none;stroke:var(--line-strong);stroke-width:1.5}
.node rect{fill:var(--surface);stroke:var(--line-strong);stroke-width:1}
.node text{fill:var(--muted);font-size:11px;letter-spacing:.12em}
.gate-ring-outer{fill:none;stroke:rgba(14,120,172,.20);stroke-width:1}
.gate-ring{
  fill:none;stroke:var(--scan);stroke-width:1.5;
  stroke-dasharray:6 10;stroke-linecap:round;
  transform-origin:360px 200px;
  animation:spin 14s linear infinite;
}
.gate-core{fill:var(--surface);stroke:var(--line-strong)}
.gate-label{fill:var(--text);font-size:17px;font-weight:700;letter-spacing:.08em}
.gate-caption{fill:var(--muted);font-size:10px;letter-spacing:.18em}
.gate-flash{fill:none;stroke:var(--block);stroke-width:2;opacity:0;pointer-events:none}
.gate-flash.on{animation:flash .45s ease-out}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes flash{0%{opacity:.9}100%{opacity:0}}

/* ==========================================================
   FAIXA DE DISCIPLINAS
   ========================================================== */
.strip{background:var(--surface);border-bottom:1px solid var(--line)}
.strip-inner{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 22px;
  padding:14px 24px;font-size:.72rem;letter-spacing:.2em;color:var(--muted);
}

/* ==========================================================
   SEÇÕES
   ========================================================== */
.section{padding:92px 0}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:680px;margin-bottom:52px}
.section-head-center{margin-left:auto;margin-right:auto;text-align:center}
.section-lead{margin-top:16px;font-size:1.05rem;color:var(--muted)}

/* ==========================================================
   SOLUÇÕES (constelação radial)
   ========================================================== */
.radial-wrap{position:relative}
#radialSvg{width:100%;height:auto}

#radialSvg .r-group-label{fill:var(--muted);font-family:var(--font-mono);font-size:11px;letter-spacing:.26em}
#radialSvg .r-group-rule{stroke:var(--line-strong);stroke-width:1}

#radialSvg .hub-ring-outer{fill:none;stroke:rgba(14,120,172,.18);stroke-width:1}
#radialSvg .hub-ring{
  fill:none;stroke:var(--scan);stroke-width:1.5;
  stroke-dasharray:5 9;stroke-linecap:round;
  transform-box:fill-box;transform-origin:center;
  animation:spin 18s linear infinite;
}
#radialSvg .hub-core{fill:var(--surface);stroke:var(--line-strong)}
#radialSvg .hub-name{fill:var(--text);font-family:var(--font-display);font-size:20px;font-weight:700;letter-spacing:-.01em}
#radialSvg .hub-sub{fill:var(--scan);font-family:var(--font-mono);font-size:8.5px;letter-spacing:.24em}

#radialSvg .link{
  fill:none;stroke:var(--line-strong);stroke-width:1.2;
  stroke-dasharray:1;stroke-dashoffset:1;
  transition:stroke .2s ease,stroke-width .2s ease;
}
.radial-wrap.in #radialSvg .link{animation:drawin .9s ease forwards}
@keyframes drawin{to{stroke-dashoffset:0}}
#radialSvg .rnode{cursor:default}
#radialSvg .rnode circle{fill:var(--scan);transition:r .2s ease}
#radialSvg .rnode.g1 circle{fill:var(--text)}
#radialSvg .rnode text{
  fill:var(--text);font-family:var(--font-display);
  font-size:16.5px;font-weight:600;letter-spacing:-.01em;
  transition:fill .2s ease;
}
#radialSvg .rnode.hot text{fill:var(--scan)}
#radialSvg .link.hot{
  stroke:var(--scan);stroke-width:2;
  stroke-dasharray:.035 .05;
  animation:flowdash 1.1s linear infinite;
}
@keyframes flowdash{from{stroke-dashoffset:0}to{stroke-dashoffset:-.085}}

/* ==========================================================
   PARCEIROS (grafo de conexões)
   ========================================================== */
.graph-wrap{position:relative}
#graphSvg{width:100%;height:auto}
.graph-hint{
  text-align:center;font-size:.66rem;letter-spacing:.22em;
  color:var(--muted);margin-top:6px;
}

#graphSvg .edge{
  fill:none;stroke:var(--line-strong);stroke-width:1.3;opacity:.55;
  stroke-dasharray:1;stroke-dashoffset:1;
  transition:opacity .25s ease,stroke .25s ease,stroke-width .25s ease;
}
.graph-wrap.in #graphSvg .edge{animation:drawin .9s ease forwards}
#graphSvg.focus .edge{opacity:.10}
#graphSvg.focus .edge.hl{
  opacity:1;stroke:var(--scan);stroke-width:2.2;
  stroke-dasharray:.016 .0265;
  animation:flowdash 1.1s linear infinite;
}

#graphSvg .gnode{cursor:pointer}
#graphSvg .gnode circle{fill:var(--scan)}
#graphSvg .gnode.cap circle{fill:var(--text)}
#graphSvg .v-name{
  fill:var(--text);font-family:var(--font-display);
  font-size:18px;font-weight:700;letter-spacing:-.01em;
}
#graphSvg .v-products{
  fill:var(--muted);font-family:var(--font-mono);
  font-size:10.5px;letter-spacing:.08em;
}
#graphSvg .c-name{
  fill:var(--text);font-family:var(--font-mono);
  font-size:12.5px;letter-spacing:.14em;
}
#graphSvg .gnode text,#graphSvg .gnode circle{transition:opacity .25s ease,fill .25s ease}
#graphSvg.focus .gnode{opacity:.28}
#graphSvg.focus .gnode.hl{opacity:1}
#graphSvg.focus .gnode.hl .v-name,
#graphSvg.focus .gnode.hl .c-name{fill:var(--scan)}
#graphSvg .col-label{
  fill:var(--muted);font-family:var(--font-mono);
  font-size:10.5px;letter-spacing:.26em;
}

/* ==========================================================
   FALLBACK TIPOGRÁFICO (mobile / sem JS)
   ========================================================== */
.flow-list{display:block}
.graph-on > .flow-list{display:none}
.graph-on .graph-hint{display:block}
.graph-wrap:not(.graph-on) .graph-hint{display:none}

.solutions-flow{display:flex;gap:64px;flex-wrap:wrap}
.flow-group{flex:1 1 280px}
.flow-label{
  font-size:.7rem;letter-spacing:.26em;color:var(--muted);
  font-weight:500;margin-bottom:18px;
}
.flow-group ul{list-style:none}
.flow-group li{
  font-family:var(--font-display);font-weight:600;font-size:1.25rem;
  padding:13px 0 13px 22px;position:relative;
  border-bottom:1px solid var(--line);
}
.flow-group li::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:7px;height:7px;border-radius:50%;background:var(--scan);
}
.flow-group:last-child li::before{background:var(--text)}

.partners-flow{display:flex;flex-direction:column}
.pf-vendor{padding:22px 0;border-bottom:1px solid var(--line)}
.pf-vendor h3{font-size:1.3rem;margin-bottom:6px}
.pf-products{font-size:.72rem;letter-spacing:.1em;color:var(--muted);margin-bottom:4px}
.pf-caps{font-size:.72rem;letter-spacing:.1em;color:var(--scan)}

/* ==========================================================
   METODOLOGIA
   ========================================================== */
.steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{border-top:2px solid var(--text);padding-top:22px}
.step-num{font-size:.78rem;letter-spacing:.2em;color:var(--scan)}
.step h3{margin:10px 0 8px}
.step p{color:var(--muted);font-size:.93rem}

/* ==========================================================
   CLIENTES (esteira de logos)
   ========================================================== */
.section-clients{padding:64px 0;border-top:1px solid var(--line)}
.section-clients .section-head{margin-bottom:44px}

.clients-marquee{
  overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
          mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
}
.clients-track{
  display:flex;width:max-content;
  animation:clientsScroll 32s linear infinite;
}
.clients-marquee:hover .clients-track{animation-play-state:paused}
.clients-set{
  display:flex;align-items:center;gap:84px;
  list-style:none;padding-right:84px;
}
.clients-set img{
  height:46px;width:auto;max-width:170px;object-fit:contain;
  opacity:.6;filter:grayscale(1);
  transition:opacity .25s ease,filter .25s ease;
}
.clients-set li:hover img{opacity:1;filter:none}
@keyframes clientsScroll{to{transform:translateX(-50%)}}

/* ==========================================================
   CONTATO
   ========================================================== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.contact-info{list-style:none;margin-top:34px;display:flex;flex-direction:column;gap:14px;font-size:.85rem}
.contact-info li{display:flex;gap:16px;align-items:baseline}
.contact-info span{color:var(--scan);font-size:.68rem;letter-spacing:.2em;min-width:110px}
.contact-info a{color:var(--text);text-decoration:none;border-bottom:1px solid var(--line-strong)}
.contact-info a:hover{border-color:var(--scan)}

.contact-form{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:34px 30px;display:flex;flex-direction:column;gap:18px;
}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.18em;color:var(--muted);text-transform:uppercase}
.field input,.field textarea{
  background:var(--bg);border:1px solid var(--line-strong);border-radius:var(--radius);
  padding:12px 14px;color:var(--text);font-family:var(--font-body);font-size:.95rem;
  transition:border-color .15s ease;resize:vertical;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--scan)}
.form-status{font-size:.74rem;letter-spacing:.08em;color:var(--scan);min-height:1em}

/* ==========================================================
   FOOTER
   ========================================================== */
.site-footer{background:var(--surface);border-top:1px solid var(--line);padding:26px 0}
.footer-inner{display:flex;justify-content:center;font-size:.74rem;letter-spacing:.1em;color:var(--muted)}

/* ==========================================================
   WHATSAPP: botão flutuante + modal de confirmação
   ========================================================== */
:root{--wa:#25D366;--wa-deep:#1EBE5A}

.wa-fab{
  position:fixed;right:24px;bottom:24px;z-index:80;
  width:58px;height:58px;border-radius:50%;border:0;cursor:pointer;
  background:var(--wa);color:#FFFFFF;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 24px rgba(22,35,58,.25);
  transition:transform .15s ease,background .15s ease,box-shadow .15s ease;
}
.wa-fab svg{width:32px;height:32px}
.wa-fab:hover{background:var(--wa-deep);transform:translateY(-2px);box-shadow:0 12px 28px rgba(22,35,58,.3)}
.wa-fab:active{transform:translateY(0)}

.wa-overlay{
  position:fixed;inset:0;z-index:90;
  background:rgba(22,35,58,.45);
  backdrop-filter:blur(3px);
  display:flex;align-items:center;justify-content:center;
  padding:24px;
  opacity:0;transition:opacity .2s ease;
}
.wa-overlay.open{opacity:1}
.wa-overlay[hidden]{display:none}

.wa-modal{
  position:relative;background:#FFFFFF;border-radius:18px;
  box-shadow:0 24px 60px rgba(22,35,58,.30);
  width:100%;max-width:480px;padding:34px 36px 30px;
  transform:translateY(10px) scale(.97);
  transition:transform .2s ease;
}
.wa-overlay.open .wa-modal{transform:none}

.wa-close{
  position:absolute;top:14px;right:18px;
  background:none;border:0;cursor:pointer;
  font-size:1.5rem;line-height:1;color:var(--muted);
  padding:6px;
}
.wa-close:hover{color:var(--text)}

.wa-head{display:flex;align-items:center;gap:16px;margin-bottom:16px}
.wa-badge{
  flex:0 0 auto;width:46px;height:46px;border-radius:50%;
  border:2px solid var(--wa);color:var(--wa);
  display:flex;align-items:center;justify-content:center;
}
.wa-badge svg{width:26px;height:26px}
.wa-modal h3{font-size:1.3rem;font-weight:700}
.wa-modal p{color:var(--muted);font-size:.98rem}

.wa-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:26px}
.wa-btn{
  font-family:var(--font-display);font-weight:600;font-size:.95rem;
  border:0;cursor:pointer;border-radius:10px;padding:12px 24px;
  transition:background .15s ease,color .15s ease,transform .12s ease;
}
.wa-btn:active{transform:translateY(1px)}
.wa-cancel{background:transparent;color:var(--text)}
.wa-cancel:hover{background:var(--bg-alt)}
.wa-continue{background:var(--wa);color:#FFFFFF}
.wa-continue:hover{background:var(--wa-deep)}

@media (max-width:720px){
  .wa-fab{right:16px;bottom:16px;width:54px;height:54px}
  .wa-modal{padding:28px 24px 24px}
}

/* ==========================================================
   REVEAL
   ========================================================== */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ==========================================================
   RESPONSIVO
   ========================================================== */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr;gap:44px}
}
@media (max-width:760px){
  /* abaixo deste ponto, os grafos dão lugar à versão tipográfica */
  #radialSvg,#graphSvg,.graph-hint{display:none !important}
  .graph-on > .flow-list{display:block}
  .graph-on > .solutions-flow{display:flex}
}
@media (max-width:720px){
  .header-cta{display:none}
  .nav-toggle{display:flex}
  .nav{
    position:absolute;top:68px;left:0;right:0;
    flex-direction:column;gap:0;background:var(--surface);
    border-bottom:1px solid var(--line);
    max-height:0;overflow:hidden;transition:max-height .25s ease;
  }
  .nav.open{max-height:340px}
  .nav a{padding:16px 24px;border-bottom:1px solid var(--line)}
  .brand-logo{height:34px}
  .hero{padding:56px 0 44px}
  .section{padding:64px 0}
  .section-clients{padding:48px 0}
  .clients-set{gap:48px;padding-right:48px}
  .clients-set img{height:34px;max-width:130px}
  .steps{grid-template-columns:1fr}
  .solutions-flow{gap:36px}
  .flow-group li{font-size:1.1rem}
}

/* ==========================================================
   MOVIMENTO REDUZIDO
   ========================================================== */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .gate-ring,#radialSvg .hub-ring{animation:none}
  #radialSvg .link,#graphSvg .edge{stroke-dashoffset:0 !important;animation:none !important}
  #radialSvg .link.hot,#graphSvg.focus .edge.hl{stroke-dasharray:none;animation:none !important}
  .reveal{opacity:1;transform:none;transition:none}
  .clients-track{animation:none;width:auto;flex-wrap:wrap;justify-content:center}
  .clients-set{flex-wrap:wrap;justify-content:center;padding-right:0}
  .clients-set[aria-hidden="true"]{display:none}
  .clients-marquee{-webkit-mask-image:none;mask-image:none}
  *{transition:none !important}
}