/* ============================================================
   TerraBytes Surveys — v14 design system
   Direction: refined deep-navy, authoritative & technical,
   moderate rounding, instrument-grade detailing.
   ============================================================ */

:root{
  --ink:#0a1a2f;
  --navy:#071a33;
  --navy2:#0d2a4d;
  --navy-soft:#12365f;
  --steel:#3f5f86;
  --accent:#2f81f7;
  --accent-bright:#5aa2ff;
  --accent-ink:#0b4fa8;
  --signal:#37d39a;
  --paper:#ffffff;
  --paper-2:#f4f8fd;
  --paper-3:#eaf1fa;
  --text:#16263b;
  --muted:#5a6e87;
  --muted-light:#9fb4cc;
  --line:#dce7f3;
  --radius:14px;
  --radius-lg:20px;
  --radius-sm:10px;
  --shadow:0 10px 30px rgba(8,26,51,.08);
  --shadow-lg:0 24px 60px rgba(8,26,51,.16);
  --maxw:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:Inter,"Segoe UI",system-ui,Arial,sans-serif;color:var(--text);
  background:var(--paper);line-height:1.62;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%}
h1,h2,h3{letter-spacing:-.022em;line-height:1.1}
.wrap{width:min(var(--maxw),92vw);margin-inline:auto}
.mono{font-family:ui-monospace,Menlo,Consolas,monospace}

.eyebrow{display:inline-flex;align-items:center;gap:.55rem;font-family:ui-monospace,Menlo,Consolas,monospace;
  text-transform:uppercase;letter-spacing:.22em;font-size:.7rem;font-weight:600;color:var(--accent-bright);margin-bottom:1rem}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);display:inline-block}
.section:not(.dark) .eyebrow{color:var(--accent-ink)}

/* NAV */
.nav{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.86);
  backdrop-filter:saturate(140%) blur(12px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand img{height:46px;width:auto;display:block}
.menu{display:flex;gap:1.5rem;align-items:center;font-weight:550;font-size:.93rem;color:var(--ink)}
.menu a{position:relative;padding:.2rem 0;color:#274057;transition:color .2s}
.menu a:not(.btn)::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease)}
.menu a:not(.btn):hover{color:var(--ink)}
.menu a:not(.btn):hover::after{transform:scaleX(1)}
.nav .mobile{display:none;border:0;cursor:pointer}

.btn{display:inline-flex;align-items:center;gap:.5rem;background:var(--accent);color:#fff;padding:.72rem 1.3rem;
  border-radius:999px;font-weight:600;font-size:.94rem;border:1px solid transparent;cursor:pointer;
  box-shadow:0 8px 22px rgba(47,129,247,.28);transition:transform .2s var(--ease),box-shadow .2s,background .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(47,129,247,.36);background:#2374ec}
.btn.secondary{background:transparent;color:#fff;border-color:rgba(255,255,255,.4);box-shadow:none}
.btn.secondary:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.7)}
.btn.dark{background:var(--ink);box-shadow:0 8px 22px rgba(10,26,47,.28)}
.btn.dark:hover{background:#13283f}
.btn.ghost{background:transparent;color:var(--accent-ink);border-color:var(--line);box-shadow:none}
.btn.ghost:hover{background:var(--paper-2);border-color:var(--accent)}
.btn .arrow{transition:transform .2s var(--ease)}
.btn:hover .arrow{transform:translateX(3px)}

/* HERO */
.hero{position:relative;color:#eaf2fc;overflow:hidden;
  background:radial-gradient(900px 500px at 88% -5%,rgba(47,129,247,.30),transparent 60%),
    radial-gradient(700px 600px at 5% 110%,rgba(55,211,154,.12),transparent 55%),
    linear-gradient(160deg,#06182f 0%,#0a2241 55%,#0c2a4d 100%)}
.hero::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:46px 46px;-webkit-mask-image:radial-gradient(circle at 50% 30%,#000,transparent 80%);mask-image:radial-gradient(circle at 50% 30%,#000,transparent 80%);pointer-events:none}
.hero .wrap{position:relative;padding:4.2rem 0 4.6rem}
.hero .grid{display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center}
.hero h1{font-size:clamp(2.1rem,4.3vw,3.5rem);font-weight:680;margin:.2rem 0 1.2rem;letter-spacing:-.03em}
.hero h1 .acc{color:var(--accent-bright)}
.lead{font-size:clamp(1.02rem,1.4vw,1.16rem);color:#bcd3ef;max-width:36rem;margin:0 0 1rem;font-weight:380}
.hero .lead{margin-bottom:.9rem}
.actions{display:flex;gap:.85rem;flex-wrap:wrap;margin-top:1.7rem}

.hero-media{position:relative}
.hero-shot{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid rgba(120,170,230,.28);
  box-shadow:var(--shadow-lg);background:#04101f}
.hero-shot>img{display:block;width:100%}
.shot-bar{display:flex;align-items:center;gap:.5rem;padding:.6rem .85rem;
  background:linear-gradient(180deg,#0a1f3a,#08182e);border-bottom:1px solid rgba(120,170,230,.18)}
.shot-bar .dots{display:flex;gap:.4rem}
.shot-bar .dots i{width:9px;height:9px;border-radius:50%;display:block;background:#26405f}
.shot-bar .tag{margin-left:auto;font-family:ui-monospace,monospace;font-size:.66rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--signal);display:flex;align-items:center;gap:.4rem}
.shot-bar .tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--signal);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(55,211,154,.5)}70%{box-shadow:0 0 0 7px rgba(55,211,154,0)}100%{box-shadow:0 0 0 0 rgba(55,211,154,0)}}
.shot-cap{position:absolute;left:0;right:0;bottom:0;padding:1.6rem 1rem .9rem;
  background:linear-gradient(transparent,rgba(4,16,31,.85));font-size:.82rem;color:#cfe0f4}
.shot-cap strong{color:#fff;font-weight:600}

.hero-video-card{position:relative;border-radius:var(--radius-lg);padding:.55rem;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.13);box-shadow:var(--shadow-lg);backdrop-filter:blur(8px)}
.hero-video{width:100%;aspect-ratio:16/9;object-fit:cover;display:block;border-radius:var(--radius);background:#000}
.video-caption{position:absolute;left:1.2rem;right:1.2rem;top:1.2rem;display:flex;justify-content:space-between;
  gap:1rem;align-items:center;background:rgba(6,19,38,.55);color:#fff;border:1px solid rgba(255,255,255,.14);
  border-radius:10px;padding:.42rem .7rem;backdrop-filter:blur(6px)}
.video-caption span{font-family:ui-monospace,monospace;font-size:.62rem;text-transform:uppercase;letter-spacing:.14em;color:var(--accent-bright);font-weight:600}
.video-caption strong{font-size:.78rem;font-weight:500}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:2.4rem;
  border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);overflow:hidden;background:rgba(255,255,255,.03)}
.stat{padding:1rem 1.1rem;border-right:1px solid rgba(255,255,255,.1)}
.stat:last-child{border-right:0}
.stat strong{display:block;font-size:1.15rem;font-weight:680;color:#fff;letter-spacing:-.01em}
.stat span{color:#a7c2e2;font-size:.82rem;line-height:1.4;display:block;margin-top:.15rem}

/* SECTIONS */
.section{padding:5rem 0}
.section.tight{padding:3.4rem 0}
.section.alt{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section.dark{background:radial-gradient(700px 400px at 90% 0%,rgba(47,129,247,.18),transparent 60%),linear-gradient(165deg,#071a33,#0c2a4d);color:#eaf2fc}
.section.dark h2{color:#fff}
.section h2{font-size:clamp(1.7rem,3.1vw,2.6rem);font-weight:680;margin:.2rem 0 1rem}
.section h2.small{font-size:clamp(1.45rem,2.4vw,2rem)}
.intro{font-size:1.1rem;color:var(--muted);max-width:54rem;font-weight:380}
.dark .intro{color:#bcd3ef}
.section-head{max-width:60rem;margin-bottom:1rem}
.section-head.center{margin-inline:auto;text-align:center}
.section-head.center .eyebrow{justify-content:center}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;margin-top:2.4rem}
.cards.two{grid-template-columns:repeat(2,1fr)}
.card{position:relative;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.6rem;box-shadow:var(--shadow);transition:transform .25s var(--ease),box-shadow .25s,border-color .25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#c2d7ef}
.card h3{margin:.7rem 0 .5rem;font-size:1.18rem;font-weight:620}
.card p{color:var(--muted);margin:0;font-size:.97rem}
.card ul{margin:.6rem 0 0;padding-left:1.1rem;color:var(--muted);font-size:.95rem}
.card ul li{margin:.25rem 0}
.card .ic{width:42px;height:42px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,#eaf2ff,#dbe9fc);color:var(--accent-ink);border:1px solid #d3e3f8}
.card .ic svg{width:22px;height:22px}
.card .num{font-family:ui-monospace,monospace;font-size:.74rem;color:var(--accent);letter-spacing:.1em;font-weight:600}
.dark .card{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.12);box-shadow:none}
.dark .card:hover{border-color:rgba(120,170,230,.4);background:rgba(255,255,255,.07)}
.dark .card p{color:#c4d6ec}
.dark .card .ic{background:rgba(47,129,247,.16);border-color:rgba(120,170,230,.3);color:var(--accent-bright)}

.split{display:grid;grid-template-columns:1fr 1fr;gap:2.6rem;align-items:center}
.split.wide{grid-template-columns:1.12fr .88fr}
.split.wide-r{grid-template-columns:.88fr 1.12fr}
.panel{border-radius:var(--radius-lg);background:var(--paper);border:1px solid var(--line);padding:1.9rem;box-shadow:var(--shadow)}
.panel.navy{background:linear-gradient(155deg,#0a2140,#0d2a4d);color:#fff;border-color:rgba(120,170,230,.2)}
.panel.navy h3{color:#fff}
.panel.navy p{color:#c4d6ec}
.panel h3{margin-top:0}

.check{list-style:none;padding:0;margin:1.3rem 0 0}
.check li{padding:.5rem 0 .5rem 2rem;position:relative;color:inherit}
.check li::before{content:"";position:absolute;left:.15rem;top:.7rem;width:13px;height:8px;
  border-left:2px solid var(--signal);border-bottom:2px solid var(--signal);transform:rotate(-45deg)}

.workflow{display:grid;grid-template-columns:repeat(6,1fr);gap:0;margin-top:2.8rem;border-top:1px solid var(--line)}
.wf{position:relative;padding:1.6rem 1.1rem 0;border-right:1px solid var(--line)}
.wf:last-child{border-right:0}
.wf::before{content:"";position:absolute;top:-5px;left:1.1rem;width:9px;height:9px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 4px rgba(47,129,247,.14)}
.wf .num{font-family:ui-monospace,monospace;font-size:.72rem;color:var(--accent);letter-spacing:.12em;font-weight:600}
.wf h3{margin:.4rem 0 .4rem;font-size:1.05rem;font-weight:620}
.wf p{margin:0;color:var(--muted);font-size:.9rem;line-height:1.5}

.deliverables{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;margin-top:2.4rem}
.deliverables .card h3{display:flex;align-items:center;gap:.5rem}
.deliverables ul{list-style:none;padding:0;margin:.8rem 0 0}
.deliverables ul li{padding:.34rem 0 .34rem 1.4rem;position:relative;color:var(--muted);font-size:.95rem;border-bottom:1px solid var(--paper-3)}
.deliverables ul li:last-child{border-bottom:0}
.deliverables ul li::before{content:"›";position:absolute;left:0;color:var(--accent);font-weight:700}

.media{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:#04101f}
.media img{display:block;width:100%;height:100%;object-fit:cover}
.media.framed{padding:.5rem;background:linear-gradient(155deg,#0a2140,#0d2a4d);border-color:rgba(120,170,230,.25)}
.media.framed img{border-radius:calc(var(--radius-lg) - 6px)}
.media .badge{position:absolute;left:.9rem;top:.9rem;display:flex;align-items:center;gap:.4rem;
  background:rgba(6,19,38,.74);border:1px solid rgba(255,255,255,.16);border-radius:8px;padding:.34rem .6rem;
  font-family:ui-monospace,monospace;font-size:.64rem;letter-spacing:.12em;text-transform:uppercase;color:var(--signal);backdrop-filter:blur(6px)}
.media .badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--signal)}

.ph{position:relative;border-radius:var(--radius-lg);min-height:300px;display:grid;place-items:center;text-align:center;padding:2rem;
  border:1px solid var(--line);overflow:hidden;
  background:repeating-linear-gradient(135deg,rgba(47,129,247,.04) 0 12px,transparent 12px 24px),linear-gradient(160deg,#0a2140,#0d2a4d)}
.ph.light{background:repeating-linear-gradient(135deg,rgba(47,129,247,.045) 0 12px,transparent 12px 24px),linear-gradient(160deg,#eef5fd,#e3edf9);border-color:var(--line)}
.ph .ph-inner{position:relative;z-index:1;max-width:30rem}
.ph .ph-ic{width:48px;height:48px;margin:0 auto .8rem;border-radius:12px;display:grid;place-items:center;
  background:rgba(47,129,247,.15);border:1px solid rgba(120,170,230,.35);color:var(--accent-bright)}
.ph.light .ph-ic{background:#dbe9fc;border-color:#c5dbf6;color:var(--accent-ink)}
.ph .ph-label{font-family:ui-monospace,monospace;text-transform:uppercase;letter-spacing:.16em;font-size:.68rem;font-weight:600;color:var(--accent-bright);display:block;margin-bottom:.45rem}
.ph.light .ph-label{color:var(--accent-ink)}
.ph .ph-desc{color:#bcd3ef;font-size:.95rem;line-height:1.5}
.ph.light .ph-desc{color:var(--muted)}
.ph::after{content:"";position:absolute;inset:.55rem;border:1px dashed rgba(120,170,230,.3);border-radius:calc(var(--radius-lg) - 5px);pointer-events:none}
.ph.light::after{border-color:rgba(47,129,247,.25)}

.video-panel{padding:.55rem;border-radius:var(--radius-lg);background:linear-gradient(155deg,#0a2140,#0d2a4d);border:1px solid rgba(120,170,230,.25);box-shadow:var(--shadow)}
.video-panel video{width:100%;display:block;border-radius:var(--radius);background:#000}

.page-hero{position:relative;color:#eaf2fc;overflow:hidden;
  background:radial-gradient(700px 400px at 85% -10%,rgba(47,129,247,.26),transparent 60%),linear-gradient(160deg,#06182f,#0c2a4d)}
.page-hero::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:44px 44px;-webkit-mask-image:radial-gradient(circle at 70% 20%,#000,transparent 78%);mask-image:radial-gradient(circle at 70% 20%,#000,transparent 78%)}
.page-hero .wrap{position:relative;padding:3.6rem 0}
.page-hero .hero-split{display:grid;grid-template-columns:1.1fr .9fr;gap:2.6rem;align-items:center}
.page-hero h1{font-size:clamp(2rem,3.6vw,3rem);font-weight:680;margin:.3rem 0 1rem}
.page-hero .lead{margin-bottom:0}
.page-hero .media,.page-hero .ph{min-height:260px}
.page-hero .media{height:100%}

.metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.9rem}
.metric{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:1.15rem}
.metric strong{display:block;font-size:1.3rem;color:var(--accent-ink);font-weight:680}
.metric span{color:var(--muted);font-size:.9rem}

.contact-section{padding:4rem 0 4.6rem}
.contact-grid{display:grid;grid-template-columns:1fr .82fr;gap:2.6rem;align-items:start}
.contact-copy h2{margin-top:0}
.contact-copy .intro{font-size:1.04rem;max-width:40rem}
.contact-details{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin-top:1.6rem}
.contact-detail{border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem;background:var(--paper);box-shadow:var(--shadow)}
.contact-detail strong{display:block;margin-bottom:.3rem;color:var(--ink);font-family:ui-monospace,monospace;font-size:.7rem;letter-spacing:.14em;text-transform:uppercase}
.contact-detail a{color:var(--accent-ink);font-weight:550}
.section-media{margin-top:1.6rem}
.contact-form{padding:1.7rem;border-radius:var(--radius-lg)}
.contact-form h3{margin:0 0 1.1rem;font-size:1.2rem;font-weight:620}
.form-row{margin-bottom:.95rem}
.form-row label{display:block;font-weight:550;font-size:.88rem;margin-bottom:.35rem;color:var(--ink)}
.form-row input,.form-row textarea,.form-row select{width:100%;padding:.74rem .85rem;border:1px solid var(--line);
  border-radius:var(--radius-sm);font:inherit;background:var(--paper);color:var(--text);transition:border-color .2s,box-shadow .2s}
.form-row input:focus,.form-row textarea:focus,.form-row select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(47,129,247,.15)}
.form-row textarea{min-height:120px;resize:vertical}
.form-status{margin:.85rem 0 0;font-weight:600;font-size:.93rem;min-height:1.2em}
.form-status.ok{color:#0a7a46}.form-status.err{color:#c0392b}
.hp{position:absolute;left:-9999px}

.cta{position:relative;overflow:hidden;border-radius:var(--radius-lg);padding:3rem 2.6rem;margin:2.5rem auto;
  background:radial-gradient(600px 300px at 85% 10%,rgba(55,211,154,.22),transparent 60%),linear-gradient(150deg,#0b4fa8,#0c2a4d);color:#fff}
.cta::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:40px 40px;-webkit-mask-image:radial-gradient(circle at 80% 0%,#000,transparent 70%);mask-image:radial-gradient(circle at 80% 0%,#000,transparent 70%)}
.cta>*{position:relative}
.cta h2{margin-top:0;color:#fff;font-weight:680}
.cta p{max-width:46rem;color:#dbeafe;margin-bottom:1.6rem}

.footer{background:linear-gradient(180deg,#061325,#040d1a);color:#aebfd4;padding:3.4rem 0 1.6rem}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2.5rem}
.footer img{height:62px;width:auto;background:#fff;border-radius:10px;padding:.35rem .5rem}
.footer p{font-size:.95rem;max-width:26rem;margin:.9rem 0 0}
.footer h3{font-family:ui-monospace,monospace;font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:#7e95b3;margin:0 0 .8rem}
.footer a{color:#cdddf0;display:inline-block;padding:.18rem 0;transition:color .2s}
.footer a:hover{color:#fff}
.footer .small{font-size:.86rem;color:#6f86a4;margin-top:1.4rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:2.4rem;padding-top:1.3rem;display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.84rem;color:#6f86a4}

@media(prefers-reduced-motion:no-preference){
  .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
  .reveal.in{opacity:1;transform:none}
}

@media(max-width:1040px){
  .workflow{grid-template-columns:repeat(3,1fr)}
  .wf:nth-child(3){border-right:0}
  .wf:nth-child(n+4){border-top:1px solid var(--line)}
}
@media(max-width:920px){
  .hero .grid,.split,.split.wide,.split.wide-r,.page-hero .hero-split,.contact-grid,.footer-grid{grid-template-columns:1fr}
  .cards,.cards.two,.deliverables{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(n+3){border-top:1px solid rgba(255,255,255,.1)}
  .menu{display:none}
  .menu.open{display:flex;position:absolute;top:68px;right:4vw;left:4vw;flex-direction:column;align-items:stretch;
    background:#fff;padding:1rem;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-lg);gap:.3rem}
  .menu.open a{padding:.7rem .6rem;border-radius:8px}
  .menu.open a:hover{background:var(--paper-2)}
  .menu.open a:not(.btn)::after{display:none}
  .menu.open .btn{justify-content:center;margin-top:.4rem}
  .nav .mobile{display:inline-flex}
  .contact-details{grid-template-columns:1fr}
  .page-hero .media,.page-hero .ph{min-height:220px}
}
@media(max-width:560px){
  .workflow{grid-template-columns:1fr}
  .wf{border-right:0;border-top:1px solid var(--line)}
  .wf:first-child{border-top:0}
  .metric-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .stat{border-right:0;border-top:1px solid rgba(255,255,255,.1)}
  .stat:first-child{border-top:0}
  .cta{padding:2.2rem 1.5rem}
}

/* case-study image fallback */
.media.is-ph{background:repeating-linear-gradient(135deg,rgba(47,129,247,.05) 0 12px,transparent 12px 24px),linear-gradient(160deg,#0a2140,#0d2a4d)}
.media.is-ph img{display:none}
.media.is-ph::before{content:"Add image";position:absolute;inset:0;display:grid;place-items:center;color:#7fa8d6;font-family:ui-monospace,monospace;font-size:.78rem;letter-spacing:.1em;text-transform:uppercase}