/* ============================================================
   PADDOX — Design System (v2, converged)
   Brand: dark canvas · electric blue · isometric block motif
   Type:  Geist (display/UI) · Geist Mono (labels/data)
   No glow · no decorative grid · no dot-eyebrows · filled panels
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Geist:wght@300;400;500;600;700&family=Geist+Mono:wght@400;500;600&display=swap');

:root{
  /* brand — from logo vectors */
  --blue:        #40B9FF;
  --blue-deep:   #005FCE;
  --gray-1:      #CECECE;
  --gray-2:      #5F5F5F;
  --blue-glow:   transparent;   /* glow retired — kept as token so old refs no-op */

  /* dark canvas */
  --bg:          #0B0C0E;
  --bg-2:        #101214;
  --ink:         #08090A;
  --surface:     #15171A;
  --surface-2:   #1B1E22;
  --panel:       #15171A;
  --panel-2:     #1B1E22;
  --line:        rgba(255,255,255,.10);
  --line-2:      rgba(255,255,255,.055);
  --line-strong: rgba(255,255,255,.16);

  /* text */
  --fg:          #F5F6F7;
  --fg-soft:     #C2C6CB;
  --mut:         #888E95;
  --mut-2:       #5A6068;

  /* paper (light sections) */
  --paper:       #F3F3F1;
  --paper-2:     #E9E9E6;
  --ink-on-paper:#0C0D0F;
  --mut-paper:   #6B6E72;
  --hair-paper:  rgba(12,13,15,.12);

  /* mark */
  --mark-1: var(--blue);
  --mark-2: var(--gray-1);

  /* Alura sub-brand (approximated from alura.co — violet content brand) */
  --alura:       #8B5CF6;
  --alura-deep:  #6D28D9;
  --alura-light: #C4B5FD;
  --alura-ink:   #0B0913;

  --maxw: 1280px;
  --pad: 40px;

  --f-disp: 'Geist', 'Helvetica Neue', Helvetica, Arial, system-ui, sans-serif;
  /* labels/eyebrows now use the sans family (no monospace — reads institutional, not AI) */
  --f-mono: 'Geist', 'Helvetica Neue', Helvetica, Arial, system-ui, sans-serif;
  --ease: cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--fg);
  font-family:var(--f-disp);font-weight:400;line-height:1.5;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
::selection{background:var(--blue);color:#02121f}

/* ---- type ---- */
.eyebrow{
  font-family:var(--f-mono);font-size:12px;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;color:var(--mut);
}
.eyebrow .dot{display:none}        /* retire the dot-eyebrow tell */
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.02;letter-spacing:-.03em}
.display{font-weight:600;font-size:clamp(46px,7.6vw,118px);line-height:.9;letter-spacing:-.045em}
.h-xl{font-size:clamp(34px,4.8vw,68px);letter-spacing:-.035em;line-height:1.0}
.h-lg{font-size:clamp(28px,3.2vw,46px);letter-spacing:-.03em;line-height:1.05}
.h-md{font-size:clamp(21px,2vw,28px);letter-spacing:-.022em;line-height:1.12}
.lede{font-size:clamp(17px,1.5vw,21px);line-height:1.5;color:var(--fg-soft);font-weight:400}
.muted{color:var(--mut)}
.tnum{font-variant-numeric:tabular-nums}

/* ---- layout ---- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.section{padding:clamp(72px,11vw,150px) 0}
.section-tight{padding:clamp(48px,7vw,90px) 0}
.divider{height:1px;background:var(--line);border:0;margin:0}
.hairline-grid{background:none}   /* decorative grid retired */

/* ---- mark ---- */
.mark{display:inline-block;vertical-align:middle;line-height:0;width:1.15em;height:1.15em}
.mark svg{width:100%;height:100%;display:block;overflow:visible}
.mark .pmk-1{fill:var(--blue)}
.mark .pmk-2{fill:var(--gray-1)}
.mark .pmk-3{fill:var(--blue-deep)}
.mark.solid .pmk-1,.mark.solid .pmk-2,.mark.solid .pmk-3{fill:currentColor}

/* ---- buttons (filled or solid-outline; square; no glow) ---- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--f-disp);font-weight:500;font-size:15px;letter-spacing:-.01em;
  padding:13px 20px;border:0;cursor:pointer;transition:.2s var(--ease);white-space:nowrap;
}
.btn-arrow{transition:transform .25s var(--ease)}
.btn:hover .btn-arrow{transform:translateX(3px)}
.btn-primary,.btn-solid{background:var(--fg);color:#08090a}
.btn-primary:hover,.btn-solid:hover{background:#fff}
.btn-blue{background:var(--blue-deep);color:#fff}
.btn-blue:hover{background:var(--blue);color:#04121f}
.btn-ghost,.btn-line{background:rgba(255,255,255,.04);color:var(--fg);box-shadow:inset 0 0 0 1.5px var(--line)}
.btn-ghost:hover,.btn-line:hover{background:rgba(255,255,255,.09)}

/* ---- header (sticky, theme-aware) ---- */
.nav{
  position:sticky;top:0;z-index:80;height:64px;display:flex;align-items:center;
  border-bottom:1px solid transparent;transition:background .35s var(--ease),border-color .35s var(--ease),backdrop-filter .35s var(--ease);
}
.nav.scrolled{backdrop-filter:blur(16px);background:color-mix(in oklab,var(--bg) 80%,transparent);border-bottom-color:var(--line-2)}
.nav-in{display:flex;align-items:center;gap:32px;height:64px;width:100%}
.brand{display:flex;align-items:center;gap:11px;font-weight:600;letter-spacing:-.03em;font-size:19px}
.brand .mark{width:26px;height:26px}
.nav-links{display:flex;gap:4px;margin-left:8px}
.nav-links a{
  font-size:14.5px;color:var(--mut);padding:7px 13px;white-space:nowrap;
  transition:color .16s var(--ease);letter-spacing:-.01em;
}
.nav-links a:hover{color:var(--fg)}
.nav-links a.active{color:var(--fg)}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-burger{display:none}

/* ---- nav dropdown ---- */
.nav-item{position:relative;display:inline-flex;align-items:center}
.nav-item>a{display:inline-flex;align-items:center;gap:6px}
.nav-item.has-sub>a::after{content:"";width:5px;height:5px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-1px);opacity:.45;transition:opacity .2s var(--ease)}
.nav-item.has-sub:hover>a::after,.nav-item.has-sub:focus-within>a::after{opacity:.9}
.subnav{position:absolute;top:100%;left:0;min-width:248px;padding:8px;z-index:90;
  background:var(--bg-2);border:1px solid var(--line);border-radius:13px;
  box-shadow:0 24px 64px -28px rgba(0,0,0,.85);
  display:flex;flex-direction:column;gap:2px;
  opacity:0;transform:translateY(7px);pointer-events:none;transition:opacity .2s var(--ease),transform .2s var(--ease)}
.nav-item:hover .subnav,.nav-item:focus-within .subnav{opacity:1;transform:none;pointer-events:auto}
.subnav a{display:flex;flex-direction:column;gap:3px;padding:11px 13px;border-radius:9px;color:var(--fg);background:none}
.subnav a:hover{background:rgba(255,255,255,.06)}
.subnav .sub-nm{font-size:14.5px;font-weight:500;color:var(--fg);letter-spacing:-.01em;display:flex;align-items:center;gap:8px}
.subnav .sub-ds{font-family:var(--f-mono);font-size:11px;letter-spacing:.01em;color:var(--mut)}
/* Alura wordmark used inside the Studio dropdown + studio page */
.alura-word{font-family:var(--f-disp);font-weight:600;letter-spacing:-.02em;color:#fff}
.alura-word .ad{color:var(--alura-light)}
.subnav .alura-row .sub-nm{font-size:17px;display:flex;align-items:center;gap:9px}
.alura-logo-sm{height:17px;width:auto;display:block}
.subnav .ext{color:var(--mut);font-size:13px}

/* ---- footer ---- */
.footer{border-top:1px solid var(--line-2);background:var(--ink);padding:72px 0 40px}
.footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:40px}
.footer h5{font-family:var(--f-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--mut-2);margin:0 0 18px;font-weight:500}
.footer-col a{display:block;color:var(--mut);font-size:14.5px;padding:6px 0;transition:.15s}
.footer-col a:hover{color:var(--fg)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:64px;padding-top:28px;border-top:1px solid var(--line-2);color:var(--mut-2);font-size:13px;font-family:var(--f-mono)}

/* ---- chips / tags (filled, no border, no led) ---- */
.chip{
  display:inline-flex;align-items:center;gap:7px;
  font-family:var(--f-mono);font-size:12px;letter-spacing:.01em;
  padding:6px 11px;border-radius:7px;color:var(--fg-soft);background:rgba(255,255,255,.05);
}
.chip .led{display:none}

/* ---- light / paper sections (mix into the dark site) ---- */
.paper{background:var(--paper);color:var(--ink-on-paper)}
.paper-2{background:var(--paper-2);color:var(--ink-on-paper)}
.paper .eyebrow,.paper-2 .eyebrow{color:var(--mut-paper)}
.paper .muted,.paper-2 .muted{color:var(--mut-paper)}
.paper .lede,.paper-2 .lede{color:#3a3d41}
.paper .divider,.paper-2 .divider{background:var(--hair-paper)}
.paper .btn-ghost,.paper .btn-line,.paper-2 .btn-ghost,.paper-2 .btn-line{color:var(--ink-on-paper);background:rgba(12,13,15,.04);box-shadow:inset 0 0 0 1.5px var(--hair-paper)}
.paper .btn-ghost:hover,.paper-2 .btn-ghost:hover{background:rgba(12,13,15,.08)}
.paper .btn-solid,.paper .btn-primary,.paper-2 .btn-solid,.paper-2 .btn-primary{background:var(--ink);color:#fff}
.paper .chip,.paper-2 .chip{color:var(--ink-on-paper);background:rgba(12,13,15,.06)}
.paper .text-blue,.paper-2 .text-blue{color:var(--blue-deep)}
.paper .mark .pmk-2,.paper-2 .mark .pmk-2{fill:var(--gray-2)}

/* paper variants for the panel components (so any section can go light) */
.paper .pillars,.paper .vals,.paper .ptab,.paper .control-list{background:var(--hair-paper)}
.paper .pillar-c,.paper .val,.paper .ptab .pt-row>div,.paper .control-list li{background:#fff}
.paper .ptab .pt-head>div{background:var(--paper-2)}
.paper .pillar-c:hover,.paper .val:hover{background:#fafafa}
.paper .pillar-c p,.paper .val p,.paper .ptab .old,.paper .control-list li{color:var(--mut-paper)}
.paper .pillar-c h3,.paper .val h4,.paper .ptab .new,.paper .control-list li b{color:var(--ink-on-paper)}
.paper .val .n,.paper .pillar-c .pno{color:#a6a9ad}
.paper .ind{border-bottom-color:var(--hair-paper)}
.paper .ind:hover{background:rgba(12,13,15,.02)}
.paper .ind .ix .nmt{color:var(--ink-on-paper)}
.paper .ind .desc{color:#3a3d41}

/* ---- Alura sub-brand theming (scoped) ---- */
.alura-theme{--blue:var(--alura);--blue-deep:var(--alura-deep);--mark-1:var(--alura);--mark-2:var(--alura-light)}
.alura-theme .text-blue{color:var(--alura)}

/* ---- reveal-on-scroll ---- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1!important;transform:none!important}}

/* ---- utility ---- */
.row{display:flex;align-items:center}
.gap-s{gap:10px}.gap-m{gap:18px}.gap-l{gap:32px}
.col{display:flex;flex-direction:column}
.grid{display:grid}
.glow-blue{box-shadow:none}
.text-blue{color:var(--blue)}

/* ---- responsive ---- */
@media (max-width:880px){
  :root{--pad:22px}
  .nav-links{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:14px;align-items:flex-start}
}