/* =========================================================================
   RETHINKABLES TECHNOLOGY
   Instruments for government. Premium institutional identity.
   Palette reads as a well-produced white paper: deep green authority,
   ink on warm paper, gold used with deliberate scarcity.
   ========================================================================= */

:root{
  /* ---- colour ---- */
  --paper:#F4F1E8;          /* warm off-white, the page */
  --paper-2:#EDE9DD;        /* slightly deeper panel */
  --ink:#141A17;            /* near-black text, high contrast */
  --ink-soft:#4A544E;       /* body secondary */
  --green:#0A3F31;          /* deep institutional green — authority */
  --green-2:#0E5140;        /* lighter green for dark sections */
  --gold:#B57E1F;           /* accent — used sparingly, 3 places */
  --line:#DBD5C6;           /* hairlines */
  --line-dark:rgba(244,241,232,.16);

  /* ---- type ---- */
  --serif:'Newsreader',Georgia,'Times New Roman',serif;
  --sans:'Plus Jakarta Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',system-ui,sans-serif;
  --mono:'Space Mono',ui-monospace,Menlo,monospace;

  /* ---- metrics ---- */
  --container:1080px;
  --gutter:clamp(20px,5vw,56px);
  --section-y:clamp(64px,8vw,104px);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

html{scroll-behavior:smooth;background:var(--paper)}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--paper);
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

.container{width:min(100% - 2*var(--gutter),var(--container));margin-inline:auto}

/* shared type atoms ------------------------------------------------------- */
.eyebrow{
  font-family:var(--mono);font-size:.72rem;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;color:var(--green);
  margin-bottom:1.1rem;
}
.eyebrow.light{color:var(--gold)}
.lead-h{
  font-family:var(--serif);font-weight:500;
  font-size:clamp(1.9rem,3.6vw,2.9rem);line-height:1.14;
  letter-spacing:-.015em;color:var(--ink);max-width:20ch;
}
.lead-h.ondark{color:var(--paper)}
.serif-em{color:var(--green);font-style:italic;font-weight:400}
.prose{max-width:60ch;margin-top:1.6rem}
.prose p{font-size:clamp(1.02rem,1.4vw,1.18rem);color:var(--ink-soft);margin-bottom:1.15rem;line-height:1.72}
.prose .prose-close{color:var(--ink);font-family:var(--serif);font-style:italic;font-size:clamp(1.12rem,1.6vw,1.32rem);line-height:1.6;margin-top:.4rem}

/* buttons ----------------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--sans);font-weight:600;font-size:.96rem;letter-spacing:.005em;
  padding:.85rem 1.6rem;border-radius:3px;cursor:pointer;text-decoration:none;
  border:1px solid transparent;transition:transform .16s ease,background .2s,color .2s,border-color .2s;
}
.btn-solid{background:var(--green);color:var(--paper);border-color:var(--green)}
.btn-solid:hover{background:#0c4c3a;transform:translateY(-1px)}
.btn-quiet{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-quiet:hover{border-color:var(--green);color:var(--green)}
.btn-gold{background:var(--gold);color:#fff;border-color:var(--gold)}
.btn-gold:hover{background:#9d6c19;transform:translateY(-1px)}
.btn-full{width:100%;margin-top:.4rem}

/* =========================================================================
   NAV
   ========================================================================= */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:60;
  padding:1.1rem 0;transition:background .3s,box-shadow .3s,padding .3s;
}
.nav.scrolled{
  background:rgba(244,241,232,.9);backdrop-filter:saturate(140%) blur(10px);
  box-shadow:0 1px 0 var(--line);padding:.7rem 0;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none}
.brand-mark{display:block;flex:none}
.brand-word{font-weight:700;font-size:1.12rem;letter-spacing:-.02em;color:var(--ink);line-height:1}
.brand-sub{display:block;font-family:var(--sans);font-weight:700;font-size:.58rem;letter-spacing:.28em;color:var(--ink-soft);margin-top:3px}
.nav-links{display:flex;align-items:center;gap:2rem}
.nav-links a:not(.nav-cta){text-decoration:none;color:var(--ink);font-size:.92rem;font-weight:500;opacity:.8;transition:opacity .2s}
.nav-links a:not(.nav-cta):hover{opacity:1}
.nav-cta{
  font-family:var(--sans);font-size:.9rem;font-weight:600;
  color:var(--green);background:transparent;border:1px solid var(--green);
  padding:.5rem 1.05rem;border-radius:3px;cursor:pointer;text-decoration:none;transition:background .2s,color .2s;
}
.nav-cta:hover{background:var(--green);color:var(--paper)}

/* =========================================================================
   HERO
   ========================================================================= */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden}
#field{position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.hero-inner{position:relative;z-index:2;padding-top:8rem;padding-bottom:5rem}
.kicker{
  font-family:var(--mono);font-size:.74rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--green);margin-bottom:1.8rem;
}
.hero-h{
  font-family:var(--serif);font-weight:500;
  font-size:clamp(2.4rem,5.4vw,4.3rem);line-height:1.06;letter-spacing:-.022em;
  color:var(--ink);max-width:17ch;
}
.hero-sub{
  margin-top:1.8rem;max-width:56ch;
  font-size:clamp(1.04rem,1.5vw,1.24rem);color:var(--ink-soft);line-height:1.66;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:.9rem;margin-top:2.4rem}
.hero-foot{
  margin-top:1.8rem;font-family:var(--mono);font-size:.78rem;color:var(--ink-soft);letter-spacing:.02em;
}
.scroll-cue{
  position:absolute;bottom:1.6rem;left:50%;transform:translateX(-50%);z-index:2;
  font-family:var(--mono);font-size:.62rem;letter-spacing:.3em;text-transform:uppercase;
  color:var(--ink-soft);writing-mode:vertical-rl;opacity:.6;
}
.scroll-cue::after{content:"";display:block;width:1px;height:30px;background:var(--ink-soft);opacity:.5;margin:8px auto 0}

/* =========================================================================
   SECTIONS (shared)
   ========================================================================= */
.section{padding:var(--section-y) 0;position:relative}

/* PROBLEM ----------------------------------------------------------------- */
.problem{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* WHAT WE BUILD ----------------------------------------------------------- */
.work-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin-top:2.6rem;background:var(--line);border:1px solid var(--line);border-radius:5px;overflow:hidden}
.work-card{background:var(--paper);padding:2rem 1.75rem;display:flex;flex-direction:column;transition:background .25s}
.work-card:hover{background:#fff}
.wc-badge{
  align-self:flex-start;font-family:var(--mono);font-size:.66rem;font-weight:700;
  letter-spacing:.06em;padding:.28rem .6rem;border-radius:2px;margin-bottom:1.3rem;
}
.badge-live{background:var(--green);color:var(--paper)}
.badge-road{background:transparent;color:var(--ink-soft);border:1px solid var(--line)}
.wc-title{font-family:var(--serif);font-weight:600;font-size:1.7rem;letter-spacing:-.01em;margin-bottom:.7rem;color:var(--ink)}
.wc-title .accent{color:var(--gold)}
.wc-body{font-size:.97rem;color:var(--ink-soft);line-height:1.62;margin-bottom:1.5rem;flex:1}
.wc-link{
  align-self:flex-start;font-family:var(--mono);font-size:.8rem;font-weight:700;
  color:var(--green);background:none;border:none;cursor:pointer;padding:0;transition:opacity .2s;
}
.wc-link:hover{opacity:.65}

/* HOW IT WORKS (dark) ----------------------------------------------------- */
.how{background:var(--ink);color:var(--paper)}
.steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);margin-top:2.6rem}
.step{padding:0 1.5rem;border-left:1px solid var(--line-dark)}
.step:first-child{padding-left:0;border-left:none}
.step-n{font-family:var(--mono);font-size:.8rem;font-weight:700;color:var(--gold);letter-spacing:.08em;display:block;margin-bottom:1.2rem}
.step h3{font-family:var(--serif);font-weight:500;font-size:1.35rem;color:var(--paper);margin-bottom:.6rem;letter-spacing:-.01em}
.step p{font-size:.92rem;color:rgba(244,241,232,.66);line-height:1.6}

/* CREDIBILITY ------------------------------------------------------------- */
.credibility{background:var(--green);color:var(--paper);padding:clamp(40px,5vw,60px) 0}
.credibility .eyebrow{color:rgba(244,241,232,.6)}
.cred-list{list-style:none;display:grid;grid-template-columns:repeat(2,1fr);gap:1rem 3rem;margin-top:.4rem}
.cred-list li{font-size:1rem;color:rgba(244,241,232,.85);padding-left:1.1rem;position:relative;line-height:1.5}
.cred-list li::before{content:"";position:absolute;left:0;top:.62em;width:5px;height:5px;background:var(--gold);border-radius:1px}
.cred-list strong{color:var(--paper);font-weight:600}

/* VISION ------------------------------------------------------------------ */
.vision{background:var(--paper)}

/* PRINCIPLES (dark) ------------------------------------------------------- */
.principles{background:var(--ink);color:var(--paper)}
.principle-list{display:grid;grid-template-columns:repeat(3,1fr);gap:2.4rem;margin-top:.4rem}
.principle{padding-top:1.4rem;border-top:2px solid var(--gold)}
.principle h3{font-family:var(--serif);font-weight:500;font-size:1.32rem;color:var(--paper);margin-bottom:.7rem;letter-spacing:-.01em;line-height:1.2}
.principle p{font-size:.95rem;color:rgba(244,241,232,.68);line-height:1.62}

/* CONTACT ----------------------------------------------------------------- */
.contact{background:var(--green);color:var(--paper);text-align:center}
.contact-inner{max-width:640px;margin-inline:auto}
.contact .eyebrow{color:var(--gold)}
.contact-sub{margin:1.4rem auto 2rem;max-width:46ch;font-size:1.08rem;color:rgba(244,241,232,.82);line-height:1.6}
.contact-alt{margin-top:1.5rem;font-family:var(--mono);font-size:.82rem;color:rgba(244,241,232,.6)}
.contact-alt a{color:var(--paper);text-decoration:none;border-bottom:1px solid rgba(244,241,232,.35)}
.contact-alt a:hover{border-color:var(--gold)}

/* FOOTER ------------------------------------------------------------------ */
.footer{background:#0a1512;color:rgba(244,241,232,.66);padding:2rem 0}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:1.2rem;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:.7rem;font-weight:600;color:var(--paper);font-size:.92rem}
.footer-meta{font-family:var(--mono);font-size:.74rem;letter-spacing:.02em;color:rgba(244,241,232,.5)}

/* =========================================================================
   MODAL
   ========================================================================= */
.modal-overlay{
  position:fixed;inset:0;z-index:9999;display:none;
  align-items:center;justify-content:center;padding:1rem;
  background:rgba(10,20,16,.82);backdrop-filter:blur(6px);
}
.modal-overlay.active{display:flex}
.modal-card{
  background:var(--paper);border-radius:5px;padding:clamp(1.75rem,4vw,2.5rem);
  max-width:600px;width:100%;position:relative;max-height:92vh;overflow-y:auto;
  box-shadow:0 30px 70px rgba(0,0,0,.35);border:1px solid var(--line);
}
.modal-close{position:absolute;top:.9rem;right:1.1rem;background:none;border:none;font-size:1.9rem;cursor:pointer;color:var(--ink);line-height:1}
.modal-h{font-family:var(--serif);font-weight:600;font-size:1.7rem;letter-spacing:-.01em;margin:.2rem 0 .5rem}
.modal-sub{color:var(--ink-soft);font-size:.98rem;line-height:1.55;margin-bottom:1.6rem}
.form-group{display:flex;flex-direction:column;gap:.35rem;margin-bottom:1rem}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.form-group label{font-family:var(--mono);font-size:.72rem;font-weight:700;letter-spacing:.04em;color:var(--ink)}
.form-group input,.form-group select,.form-group textarea{
  padding:.7rem .8rem;border:1px solid var(--line);background:#fff;border-radius:3px;
  font-family:var(--sans);font-size:.92rem;color:var(--ink);width:100%;
}
.form-group textarea{resize:vertical}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:2px solid var(--green);outline-offset:1px;border-color:var(--green)}

/* =========================================================================
   REVEAL
   ========================================================================= */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.active{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* =========================================================================
   RESPONSIVE
   ========================================================================= */
@media (max-width:880px){
  .nav-links{gap:1.1rem}
  .nav-links a:not(.nav-cta){display:none}
  .work-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr);gap:2.2rem 0}
  .step{border-left:none;padding-left:0}
  .step:nth-child(odd){padding-right:1.5rem}
  .principle-list{grid-template-columns:1fr;gap:1.8rem}
  .cred-list{grid-template-columns:1fr;gap:.8rem}
}
@media (max-width:560px){
  .steps{grid-template-columns:1fr;gap:1.8rem}
  .form-grid{grid-template-columns:1fr}
  .brand-sub{display:none}
}