/* =========================================================
   OliveTree Technologies — main stylesheet
   Editorial / corporate consulting design system
   ========================================================= */

:root{
  /* Brand colour, sampled from the OliveTree logo */
  --olive-deep:  #3f4d22;   /* primary brand green            */
  --olive:       #51622d;   /* logo leaf green                 */
  --khaki:       #8b8946;   /* muted gold-olive accent         */
  --khaki-light: #a5a253;   /* lighter accent, sparingly used  */
  --parchment:   #e7e3d2;   /* olive-fruit cream, section bg   */
  --paper:       #f6f4ec;   /* main warm off-white background  */
  --ink:         #201f18;   /* near-black, warm undertone      */
  --ink-soft:    #514f42;   /* secondary text                  */
  --line:        #cdc7ab;   /* hairline rule colour             */
  --white:       #ffffff;

  --font-display: 'Newsreader', Georgia, 'Times New Roman', serif;
  --font-body:    'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --measure: 62ch;
  --gutter: clamp(1.5rem, 4vw, 4rem);
}

/* -------------------- Reset -------------------- */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family: inherit; }
h1,h2,h3,h4{ font-family: var(--font-display); font-weight:500; margin:0; color: var(--ink); }
p{ margin:0; }

:focus-visible{
  outline: 2px solid var(--olive-deep);
  outline-offset: 3px;
}

.wrap{
  max-width: 1180px;
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.rule{
  border: none;
  border-top: 1px solid var(--line);
  margin: 0;
}

.eyebrow{
  font-family: var(--font-body);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--olive-deep);
  font-weight: 600;
}

/* -------------------- Masthead -------------------- */
.masthead{
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
}
.masthead__bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 1.1rem var(--gutter);
  max-width: 1180px;
  margin: 0 auto;
}
.masthead__brand{
  display:flex;
  align-items:center;
  gap: 0.65rem;
}
.masthead__brand img{ height: 50px; width:auto; }
.masthead__brand .brand-word{
  font-family: var(--font-display);
  font-size: 1.28rem;
  color: var(--olive-deep);
  letter-spacing: 0.01em;
}
.masthead__brand .brand-word b{ font-weight: 600; }
.masthead__brand small{
  display:block;
  font-family: var(--font-body);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
  margin-top: 0.1rem;
}

.nav-primary ul{
  display:flex;
  gap: 2.1rem;
  align-items:center;
}
.nav-primary a{
  font-size: 0.93rem;
  color: var(--ink);
  position:relative;
  padding: 0.3rem 0;
}
.nav-primary a::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:0;
  height:1px;
  background: var(--olive-deep);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}
.nav-primary a:hover::after,
.nav-primary a[aria-current="page"]::after{ transform: scaleX(1); }
.nav-primary .btn{ margin-left: 0.4rem; }

.nav-toggle{
  display:none;
  background:none;
  border: 1px solid var(--ink);
  width: 40px; height: 40px;
  align-items:center; justify-content:center;
  cursor:pointer;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:"";
  display:block;
  width: 18px; height:1px;
  background: var(--ink);
  position:relative;
}
.nav-toggle span::before{ position:absolute; top:-6px; }
.nav-toggle span::after{ position:absolute; top:6px; }

/* -------------------- Buttons -------------------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:0.5rem;
  padding: 0.72rem 1.35rem;
  border: 1px solid var(--olive-deep);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--olive-deep);
  background: transparent;
  transition: background .2s ease, color .2s ease;
}
.btn:hover{ background: var(--olive-deep); color: var(--white); }
.btn--solid{
  background: var(--olive-deep);
  color: var(--white);
}
.btn--solid:hover{ background: var(--ink); border-color: var(--ink); }

/* -------------------- Hero -------------------- */
.hero{
  padding: clamp(3rem, 8vw, 6.5rem) 0 clamp(2.5rem, 6vw, 4rem);
  border-bottom: 1px solid var(--line);
}
.hero__grid{
  display:grid;
  grid-template-columns: 1.5fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items:end;
}
.hero__kicker{
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  color: var(--olive-deep);
  font-weight: 600;
  margin-bottom: 1.1rem;
}
.hero h1{
  font-size: clamp(2.2rem, 4.4vw, 3.5rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  max-width: 22ch;
}
.hero__lede{
  margin-top: 1.6rem;
  font-size: 1.12rem;
  color: var(--ink-soft);
  max-width: 46ch;
  line-height: 1.65;
}
.hero__cta{
  margin-top: 2.1rem;
  display:flex;
  gap: 1rem;
  flex-wrap:wrap;
}
.hero__facts{
  border-left: 1px solid var(--line);
  padding-left: clamp(1.5rem, 3vw, 2.5rem);
}
.hero__facts dl{
  display:grid;
  grid-template-columns: auto 1fr;
  gap: 0.6rem 1.2rem;
}
.hero__facts dt{
  font-size: 0.78rem;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}
.hero__facts dd{
  margin:0;
  font-family: var(--font-display);
  font-size: 1.02rem;
  color: var(--ink);
  text-align:right;
}

/* -------------------- Section shell -------------------- */
.section{ padding: clamp(3rem, 7vw, 5.5rem) 0; }
.section--alt{ background: var(--parchment); }
.section__head{
  display:grid;
  grid-template-columns: 0.9fr 1.4fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  margin-bottom: clamp(2rem, 5vw, 3.2rem);
  align-items:end;
  padding-bottom: 1.6rem;
  border-bottom: 1px solid var(--line);
}
.section__head h2{
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  line-height: 1.12;
}
.section__head p{
  color: var(--ink-soft);
  max-width: 52ch;
}

/* -------------------- Two column intro (About) -------------------- */
.split{
  display:grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 5vw, 4.5rem);
}
.split p + p{ margin-top: 1.1rem; }
.split .lede{
  font-family: var(--font-display);
  font-size: 1.3rem;
  line-height: 1.45;
  color: var(--ink);
}
.split--reverse{ grid-template-columns: 1.15fr 0.85fr; }

/* -------------------- What we do (two blocks) -------------------- */
.pillars{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}
.pillar{
  padding: 2.3rem clamp(1rem, 3vw, 2.6rem) 2.3rem 0;
  border-bottom: 1px solid var(--line);
}
.pillar + .pillar{
  padding-left: clamp(1.5rem, 3vw, 2.6rem);
  border-left: 1px solid var(--line);
}
.pillar__index{
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--khaki);
  margin-bottom: 0.9rem;
  display:block;
}
.pillar h3{
  font-size: 1.5rem;
  margin-bottom: 0.9rem;
}
.pillar p{ color: var(--ink-soft); }

/* -------------------- Capabilities index list -------------------- */
.index-list{ border-top: 1px solid var(--line); }
.index-item{
  display:grid;
  grid-template-columns: 2fr 3fr;
  gap: clamp(1.2rem, 4vw, 3rem);
  padding: 1.8rem 0;
  border-bottom: 1px solid var(--line);
}
.index-item h3{
  font-size: 1.35rem;
  color: var(--olive-deep);
}
.index-item p{ color: var(--ink-soft); }

/* -------------------- Commitment list -------------------- */
.commit-grid{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.6rem 3rem;
}
.commit-item{
  padding-top: 1.1rem;
  border-top: 1px solid var(--khaki);
}
.commit-item h4{
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
}
.commit-item p{ color: var(--ink-soft); font-size: 0.96rem; }

/* -------------------- CTA band -------------------- */
.cta-band{
  background: var(--olive-deep);
  color: var(--parchment);
  padding: clamp(2.6rem, 6vw, 4rem) 0;
}
.cta-band__inner{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap: 2rem;
  flex-wrap:wrap;
}
.cta-band h2{
  color: var(--white);
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  max-width: 20ch;
}
.cta-band .btn{
  border-color: var(--parchment);
  color: var(--parchment);
}
.cta-band .btn:hover{ background: var(--parchment); color: var(--olive-deep); }

/* -------------------- Contact -------------------- */
.contact-grid{
  display:grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
}
.contact-info dt{
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--olive-deep);
  margin-top: 1.6rem;
}
.contact-info dt:first-child{ margin-top:0; }
.contact-info dd{
  margin: 0.3rem 0 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.form-row{ margin-bottom: 1.3rem; }
.form-row label{
  display:block;
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-bottom: 0.4rem;
}
.form-row input,
.form-row textarea{
  width:100%;
  border: none;
  border-bottom: 1px solid var(--line);
  background: transparent;
  padding: 0.6rem 0.1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
}
.form-row input:focus,
.form-row textarea:focus{
  outline:none;
  border-bottom-color: var(--olive-deep);
}
.form-row textarea{ resize: vertical; min-height: 110px; }
.form-notice{
  margin-bottom: 1.4rem;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--olive-deep);
  font-size: 0.92rem;
}
.form-notice--error{ border-color: #8a3b25; color:#8a3b25; }

/* -------------------- Page hero (interior pages) -------------------- */
.page-hero{
  padding: clamp(2.6rem, 6vw, 4.2rem) 0 clamp(2rem, 5vw, 3rem);
  border-bottom: 1px solid var(--line);
}
.page-hero__kicker{
  font-size: 0.85rem;
  color: var(--olive-deep);
  font-weight: 600;
  margin-bottom: 0.8rem;
}
.page-hero h1{
  font-size: clamp(2.1rem, 4.4vw, 3.2rem);
  max-width: 18ch;
}
.page-hero p{
  margin-top: 1.2rem;
  max-width: 56ch;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

/* -------------------- Footer -------------------- */
.site-footer{
  border-top: 1px solid var(--line);
  padding: clamp(2.4rem, 5vw, 3.2rem) 0 1.6rem;
  background: var(--paper);
}
.footer-grid{
  display:grid;
  grid-template-columns: 1.3fr 0.9fr 0.9fr;
  gap: 2.5rem;
  padding-bottom: 2rem;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap: 0.6rem;
  margin-bottom: 0.9rem;
}
.footer-brand img{ height: 32px; }
.footer-brand span{
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--olive-deep);
}
.site-footer p{ color: var(--ink-soft); font-size: 0.93rem; max-width: 40ch; }
.footer-col h5{
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
  margin-bottom: 0.9rem;
  font-weight:600;
}
.footer-col ul li{ margin-bottom: 0.55rem; }
.footer-col a:hover{ color: var(--olive-deep); }
.footer-bottom{
  border-top: 1px solid var(--line);
  padding-top: 1.3rem;
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap: 0.8rem;
  font-size: 0.82rem;
  color: var(--ink-soft);
}

/* -------------------- Responsive -------------------- */
@media (max-width: 900px){
  .hero__grid, .split, .split--reverse, .contact-grid{ grid-template-columns: 1fr; }
  .hero__facts{ border-left:none; border-top: 1px solid var(--line); padding-left:0; padding-top: 1.5rem; }
  .section__head{ grid-template-columns: 1fr; }
  .pillars{ grid-template-columns: 1fr; }
  .pillar + .pillar{ border-left:none; border-top: 1px solid var(--line); padding-left:0; }
  .index-item{ grid-template-columns: 1fr; gap: 0.5rem; }
  .commit-grid{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; gap: 1.8rem; }
}

@media (max-width: 760px){
  .nav-primary{
    display:none;
    position:absolute;
    top: 100%; left:0; right:0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 1.2rem var(--gutter) 1.6rem;
  }
  .nav-primary.is-open{ display:block; }
  .nav-primary ul{ flex-direction:column; align-items:flex-start; gap: 1rem; }
  .nav-toggle{ display:flex; }
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  .nav-primary a::after{ transition:none; }
}