/* ============================================================
   NB Technologies — shared base
   Tokens, type, nav, buttons, footer. Loaded by index.html and
   every case-study page. Colours follow the brand kit: Electric
   Blue, Deep Navy, White — greys are tints of navy, light
   surfaces are tints of blue.
   ============================================================ */
@font-face{
  font-family:"Outfit";
  src:url("fonts/Outfit-Variable.woff2") format("woff2-variations"),
      url("fonts/Outfit-Variable.ttf") format("truetype");
  font-weight:100 900;font-style:normal;font-display:swap}

:root{
  --blue:#1258EB;
  --navy:#030E31;
  --white:#FFFFFF;
  --blue-deep:#0E47C9;          /* pressed / hover state of blue */
  --blue-10:#E7EEFD;            /* brand-approved tints */
  --blue-20:#D0DEFB;
  --navy-70:rgba(3,14,49,.70);
  --navy-55:rgba(3,14,49,.55);
  --navy-30:rgba(3,14,49,.30);
  --navy-14:rgba(3,14,49,.14);
  --navy-8:rgba(3,14,49,.08);
  --navy-4:rgba(3,14,49,.04);
  --white-70:rgba(255,255,255,.70);
  --white-40:rgba(255,255,255,.40);
  --white-16:rgba(255,255,255,.16);
  --white-8:rgba(255,255,255,.08);
  /* legacy aliases used by the hero animation + older blocks */
  --pulse:var(--blue);
  --ink:var(--navy);
  --paper:var(--white);
  --mist:#CDCFD6;               /* navy 20% on white */
  --haze:#E6E7EA;               /* navy 10% on white */
  --ink-70:var(--navy-70);
  --paper-60:var(--white-70);
  --paper-16:var(--white-16);
  --shell:min(1400px,100%);
  --pad:clamp(24px,4vw,64px);
  --font:"Outfit","Inter","Poppins",ui-sans-serif,system-ui,sans-serif;
  --ease:cubic-bezier(.3,.8,.3,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{overflow-x:clip}
html,body{background:var(--white);color:var(--navy);
  font-family:var(--font);-webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
button{font:inherit}
:focus-visible{outline:2.5px solid var(--blue);outline-offset:3px;
  border-radius:8px}
::selection{background:var(--blue);color:#fff}

.shell-x{width:var(--shell);margin:0 auto;
  padding-left:var(--pad);padding-right:var(--pad)}

/* ================= brand glyph: the slat from the mark ================= */
/* one blade of the NB mark. Used as label marker, bullet, and tick. */
.slat,.eyebrow::before,.tick::before{
  display:inline-block;width:8px;height:18px;background:var(--blue);
  clip-path:polygon(100% 0,100% 73%,0 100%,0 27%)}
.slat.r{clip-path:polygon(0 0,0 73%,100% 100%,100% 27%)}

/* ================= type ================= */
.eyebrow{display:inline-flex;align-items:center;gap:11px;
  font-size:13px;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--navy)}
.eyebrow::before{content:"";flex:none}
.on-dark .eyebrow,.eyebrow.light{color:#fff}
.h-xl{font-weight:700;letter-spacing:-.035em;line-height:1.02;
  font-size:clamp(2.7rem,6vw,5.2rem)}
.h-lg{font-weight:700;letter-spacing:-.03em;line-height:1.05;
  font-size:clamp(2rem,4vw,3.3rem)}
.h-md{font-weight:700;letter-spacing:-.025em;line-height:1.1;
  font-size:clamp(1.5rem,2.6vw,2.2rem)}
.dot,.hl{color:var(--blue)}
.lede{font-size:clamp(1rem,1.2vw,1.15rem);line-height:1.65;
  color:var(--navy-70);font-weight:400}
.on-dark .lede{color:var(--white-70)}
.sec-head{display:flex;align-items:end;justify-content:space-between;
  gap:24px;flex-wrap:wrap;margin-bottom:clamp(40px,6vh,64px)}
.sec-head .lede{max-width:46ch;padding-bottom:6px}
.sec-head .h-lg{margin-top:14px}

/* ================= buttons ================= */
.btn{display:inline-flex;align-items:center;gap:10px;
  border-radius:999px;padding:15px 28px;font-size:15.5px;font-weight:600;
  letter-spacing:-.005em;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,
    transform .2s ease}
.btn:active{transform:scale(.97)}
.btn svg{flex:none;transition:transform .2s ease}
.btn:hover svg{transform:translateX(4px)}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:var(--navy)}
.on-dark .btn-blue:hover{background:#fff;color:var(--navy)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--blue)}
.btn-white{background:#fff;color:var(--navy)}
.btn-white:hover{background:var(--navy);color:#fff}
.btn-ghost{border:1.5px solid var(--navy-14);color:var(--navy)}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}
.on-dark .btn-ghost{border-color:var(--white-16);color:#fff}
.on-dark .btn-ghost:hover{border-color:#fff}
.btn-lg{padding:18px 34px;font-size:16.5px}
.btn-sm{padding:12px 22px;font-size:14.5px}

/* ================= nav ================= */
.site-nav{display:flex;align-items:center;justify-content:space-between;
  gap:24px;padding-top:22px;padding-bottom:14px}
.brand{display:inline-flex;align-items:center;flex:none}
.brand img{height:44px;width:auto}
.brand .brand-mark{display:none;height:34px}
.nav-links{display:flex;align-items:center;gap:clamp(18px,2.6vw,36px)}
/* :not(.btn) — a bare `.nav-links a` colour rule outranks `.btn-blue`
   on specificity and would paint the button's label navy on blue */
.nav-links a:not(.btn){font-size:15px;font-weight:500;color:var(--navy);
  transition:color .15s ease}
.nav-links a:not(.btn):hover{color:var(--blue)}
.nav-links .btn{padding:12px 24px;font-size:14.5px}
@media (max-width:1020px){.nav-links a:not(.btn){display:none}}
@media (max-width:560px){
  .brand .brand-full{display:none}
  .brand .brand-mark{display:block}
  .site-nav{padding-top:18px}
}

/* ================= footer ================= */
.foot{position:relative;background:var(--navy);color:#fff;overflow:hidden}
.foot::after{ /* the mark, ghosted in the corner */
  content:"";position:absolute;right:-2%;bottom:-8%;width:clamp(220px,26vw,380px);
  aspect-ratio:208/280;background:url("brand/mark-white.svg") no-repeat
    center/contain;opacity:.045;pointer-events:none}
.foot-grid{position:relative;display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  gap:clamp(32px,4vw,56px);padding-top:clamp(52px,7vh,80px);
  padding-bottom:clamp(44px,6vh,64px)}
.foot .brand img{height:46px}
.foot-tag{margin-top:20px;font-size:15px;line-height:1.6;
  color:var(--white-70);max-width:30ch}
.foot-col h4{font-size:12.5px;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--white-40);margin-bottom:18px}
.foot-col ul{list-style:none;display:grid;gap:12px}
.foot-col a,.foot-col span{font-size:15px;font-weight:500}
.foot-col a{transition:color .18s ease}
.foot-col a:hover{color:var(--blue)}
.foot-col span{color:var(--white-70)}
.foot-bottom{position:relative;display:flex;align-items:center;
  justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--white-16);padding-top:24px;padding-bottom:30px;
  font-size:13.5px;color:var(--white-70)}
.foot-top{display:inline-flex;align-items:center;gap:8px;font-weight:600;
  color:#fff;transition:color .18s ease}
.foot-top:hover{color:var(--blue)}
@media (max-width:900px){.foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.foot-grid{grid-template-columns:1fr}}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .btn,.btn:active{transform:none}
}