/* ============================================================
   TerraFirm Development Group — terrafirmdg.com
   Design system: annual-report editorial. Navy / copper-gold /
   warm paper. Archivo display · Source Serif 4 body · Plex Mono meta.
   ============================================================ */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
img, svg { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; }

/* ---------- Tokens ---------- */
:root {
  --ink:      #0A1622;   /* deep navy — dark bands            */
  --ink-2:    #0E1D2C;   /* raised navy panel                 */
  --slate:    #2A353E;   /* logo navy — text on paper         */
  --paper:    #F7F5F1;   /* warm off-white — light bands      */
  --paper-2:  #EFECE5;   /* recessed paper panel              */
  --gold:     #9D7F4C;   /* logo gold — rules, quiet accents  */
  --copper:   #C4884B;   /* card copper — labels, CTAs        */
  --copper-2: #D69A5C;   /* copper hover                      */
  --mist:     #94A3B1;   /* muted text on navy                */
  --stone:    #6B6F6A;   /* muted text on paper               */
  --line-d:   rgba(157, 127, 76, .28);  /* hairline on dark   */
  --line-l:   rgba(42, 53, 62, .18);    /* hairline on light  */

  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Source Serif 4", Georgia, serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;

  --measure: 62ch;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --band-pad: clamp(4.5rem, 10vw, 8.5rem);
  --chev: 14px; /* chevron notch depth */
}

/* ---------- Base ---------- */
body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.72;
  color: var(--slate);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--copper); color: var(--ink); }

.wrap {
  width: min(1180px, 100% - var(--gutter) * 2);
  margin-inline: auto;
}

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--copper); color: var(--ink);
  padding: .6rem 1rem; z-index: 200; font-family: var(--font-mono);
}
.skip-link:focus { left: 0; }

/* ---------- Type ---------- */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 640;
  font-stretch: 108%;
  line-height: 1.06;
  letter-spacing: -.015em;
  text-wrap: balance;
}

.display-xl { font-size: clamp(2.6rem, 7.2vw, 5.1rem); }
.display-lg { font-size: clamp(2rem, 4.6vw, 3.3rem); }
.display-md { font-size: clamp(1.45rem, 2.6vw, 2rem); }

.lede {
  font-size: clamp(1.1rem, 1.7vw, 1.3rem);
  line-height: 1.6;
  max-width: var(--measure);
}

/* Eyebrow: mono label with leading rule — the system's signature */
.eyebrow {
  display: flex; align-items: center; gap: .9rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 1.4rem;
}
.eyebrow::before {
  content: ""; width: 2.2rem; height: 1px;
  background: var(--gold); flex: none;
}

.gold-dot { color: var(--copper); }

/* ---------- Bands ---------- */
.band { padding-block: var(--band-pad); position: relative; }
.band--dark { background: var(--ink); color: var(--paper); }
.band--dark .eyebrow { color: var(--copper); }
.band--dark .muted { color: var(--mist); }
.band--paper { background: var(--paper); }
.band--paper2 { background: var(--paper-2); }
.muted { color: var(--stone); }

/* Blueprint hairlines on dark bands */
.band--dark.band--grid::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    repeating-linear-gradient(to right,
      rgba(247,245,241,.035) 0, rgba(247,245,241,.035) 1px,
      transparent 1px, transparent calc(100% / 6));
}

/* Ghost monogram watermark (matches card back) */
.ghost-mark {
  position: absolute; right: -4%; bottom: -6%;
  width: min(56vw, 640px); opacity: .05; pointer-events: none;
  color: var(--paper);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--ink);
  border-bottom: 1px solid var(--line-d);
}
.site-header__in {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem; min-height: 76px;
}
.brand { display: flex; align-items: center; gap: .9rem; text-decoration: none; color: var(--paper); }
.brand svg, .brand img { height: 34px; width: auto; color: var(--paper); }
.brand__name { display: flex; flex-direction: column; line-height: 1.25; }
.brand__name b {
  font-family: var(--font-display); font-weight: 620; font-stretch: 106%;
  font-size: .98rem; letter-spacing: .3em; text-transform: uppercase;
}
.brand__name span {
  font-family: var(--font-mono); font-size: .56rem;
  letter-spacing: .34em; text-transform: uppercase; color: var(--copper);
}

.site-nav { display: flex; align-items: center; gap: clamp(1.1rem, 2.5vw, 2.2rem); }
.site-nav a {
  font-family: var(--font-mono); font-size: .8rem; letter-spacing: .14em;
  text-transform: uppercase; text-decoration: none; color: var(--mist);
  padding: .4rem 0; border-bottom: 1px solid transparent;
  transition: color .18s, border-color .18s;
}
.site-nav a:hover { color: var(--paper); }
.site-nav a[aria-current="page"] { color: var(--paper); border-bottom-color: var(--copper); }

.nav-toggle {
  display: none; background: none; border: 1px solid var(--line-d);
  color: var(--paper); padding: .55rem .8rem; cursor: pointer;
  font-family: var(--font-mono); font-size: .75rem; letter-spacing: .18em;
  text-transform: uppercase;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; text-decoration: none; cursor: pointer;
  font-family: var(--font-mono); font-size: .82rem; font-weight: 500;
  letter-spacing: .16em; text-transform: uppercase;
  padding: .95rem 1.7rem; border: 1px solid var(--copper);
  transition: background .18s, color .18s, border-color .18s;
  /* chevron-cut corner — echoes the business card */
  clip-path: polygon(0 0, calc(100% - var(--chev)) 0, 100% var(--chev), 100% 100%, 0 100%);
}
.btn--solid { background: var(--copper); color: var(--ink); }
.btn--solid:hover { background: var(--copper-2); border-color: var(--copper-2); }
.btn--ghost { background: transparent; color: var(--copper); }
.btn--ghost:hover { background: var(--copper); color: var(--ink); }
.band--paper .btn--ghost, .band--paper2 .btn--ghost { color: var(--slate); border-color: var(--slate); }
.band--paper .btn--ghost:hover, .band--paper2 .btn--ghost:hover { background: var(--slate); color: var(--paper); }

/* ---------- Hero (home) ---------- */
.hero {
  background: var(--ink); color: var(--paper);
  padding-block: clamp(5rem, 13vw, 10.5rem) clamp(5rem, 12vw, 9rem);
  overflow: hidden;
}
.hero .wrap { position: relative; z-index: 1; }
.hero__mark { height: clamp(58px, 9vw, 92px); width: auto; color: var(--paper); margin-bottom: 2.6rem; }
.hero h1 { max-width: 12ch; }
.hero .lede { margin-top: 1.8rem; color: var(--mist); }
.hero__cta { margin-top: 2.8rem; display: flex; gap: 1rem; flex-wrap: wrap; }
.hero__meta {
  margin-top: clamp(3rem, 7vw, 5rem); padding-top: 1.4rem;
  border-top: 1px solid var(--line-d);
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .2em;
  text-transform: uppercase; color: var(--mist);
}
.hero__meta b { color: var(--copper); font-weight: 500; }

/* ---------- Split layout ---------- */
.split {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(2rem, 6vw, 5.5rem); align-items: start;
}
.split__body p + p { margin-top: 1.2em; }
.split__aside { position: sticky; top: 110px; }

/* ---------- Service index rows (home) ---------- */
.svc-index { border-top: 1px solid var(--line-l); margin-top: 3rem; }
.svc-index__row {
  display: grid; grid-template-columns: 4rem 1fr auto; gap: 1.5rem;
  align-items: baseline; padding: 1.6rem 0;
  border-bottom: 1px solid var(--line-l);
  text-decoration: none; transition: padding-left .22s;
}
.svc-index__row:hover { padding-left: .8rem; }
.svc-index__num { font-family: var(--font-mono); font-size: .8rem; color: var(--copper); }
.svc-index__name {
  font-family: var(--font-display); font-weight: 600; font-stretch: 106%;
  font-size: clamp(1.25rem, 2.6vw, 1.9rem); letter-spacing: -.01em;
}
.svc-index__hint {
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .16em;
  text-transform: uppercase; color: var(--stone);
  opacity: 0; transform: translateX(-6px); transition: opacity .22s, transform .22s;
}
.svc-index__row:hover .svc-index__hint { opacity: 1; transform: none; color: var(--copper); }

/* ---------- Process rail ---------- */
.process { margin-top: 3.5rem; }
.process ol {
  list-style: none; display: grid;
  grid-template-columns: repeat(6, 1fr); gap: 0;
  counter-reset: step;
}
.process li {
  counter-increment: step; position: relative;
  padding: 1.5rem 1.2rem 0 0; border-top: 1px solid var(--line-d);
}
.process li::before {
  content: "0" counter(step);
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .18em;
  color: var(--copper); display: block; margin-bottom: .55rem;
}
.process li::after { /* tick mark on the rail */
  content: ""; position: absolute; top: -1px; left: 0;
  width: 1px; height: 9px; background: var(--gold);
}
.process h3 {
  font-size: 1.02rem; font-weight: 620; letter-spacing: .04em;
  text-transform: uppercase; margin-bottom: .4rem;
}
.process p { font-size: .88rem; line-height: 1.55; color: var(--mist); }
.band--paper .process li, .band--paper2 .process li { border-top-color: var(--line-l); }
.band--paper .process p, .band--paper2 .process p { color: var(--stone); }

/* ---------- Statement band ---------- */
.statement { text-align: left; }
.statement h2 { max-width: 18ch; }
.statement .lede { margin-top: 1.6rem; }

/* ---------- CTA band ---------- */
.cta-band { border-top: 1px solid var(--line-d); }
.cta-band .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 2rem; flex-wrap: wrap;
}
.cta-band h2 { max-width: 16ch; }
.cta-band .muted { margin-top: .8rem; font-family: var(--font-mono); font-size: .8rem; letter-spacing: .18em; text-transform: uppercase; }

/* ---------- Page hero (subpages) ---------- */
.page-hero {
  background: var(--ink); color: var(--paper);
  padding-block: clamp(3.5rem, 8vw, 6rem);
  border-bottom: 1px solid var(--line-d);
  overflow: hidden;
}
.page-hero h1 { max-width: 16ch; }
.page-hero .lede { margin-top: 1.4rem; color: var(--mist); }

/* ---------- Services detail ---------- */
.svc-detail { border-top: 1px solid var(--line-l); }
.svc-detail__row {
  display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  gap: clamp(1.5rem, 5vw, 4.5rem);
  padding-block: clamp(2.2rem, 5vw, 3.6rem);
  border-bottom: 1px solid var(--line-l);
}
.svc-detail__row h2 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); }
.svc-detail__num {
  font-family: var(--font-mono); font-size: .78rem; color: var(--copper);
  display: block; margin-bottom: .7rem;
}
.svc-detail__row p { max-width: var(--measure); }
.svc-detail__row p + p { margin-top: 1em; }

/* ---------- Approach steps ---------- */
.step-list { border-top: 1px solid var(--line-l); }
.step {
  display: grid; grid-template-columns: 7rem minmax(0, 1fr);
  gap: clamp(1.2rem, 4vw, 3rem);
  padding-block: clamp(2rem, 4.5vw, 3rem);
  border-bottom: 1px solid var(--line-l);
}
.step__num {
  font-family: var(--font-mono); font-size: .82rem; letter-spacing: .14em;
  color: var(--copper); padding-top: .45rem;
}
.step h2 {
  font-size: clamp(1.3rem, 2.2vw, 1.7rem);
  text-transform: uppercase; letter-spacing: .05em; margin-bottom: .7rem;
}
.step p { max-width: var(--measure); }

/* ---------- Projects ---------- */
.doc-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; background: var(--line-l);
  border: 1px solid var(--line-l); margin-top: 3rem;
}
.doc-grid__cell { background: var(--paper); padding: 2rem 1.6rem 2.4rem; }
.doc-grid__cell h3 {
  font-size: 1.02rem; text-transform: uppercase; letter-spacing: .05em;
  margin-bottom: .7rem;
}
.doc-grid__cell p { font-size: .95rem; color: var(--stone); }
.doc-grid__k {
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .18em;
  color: var(--copper); display: block; margin-bottom: 1.1rem;
}

.portfolio-note {
  margin-top: 3.5rem; padding: 2rem 2.2rem;
  border: 1px solid var(--line-l); border-left: 3px solid var(--gold);
  background: var(--paper-2); max-width: 46rem;
}
.portfolio-note p { font-size: .98rem; }

/* Future project cards (template ships commented-out in projects.html) */
.project-card { border: 1px solid var(--line-l); margin-top: 2.5rem; }
.project-card img { width: 100%; height: auto; }
.project-card__body { padding: 1.8rem 2rem 2.2rem; }
.project-card__meta {
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .18em;
  text-transform: uppercase; color: var(--copper); margin-bottom: .8rem;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(2.5rem, 6vw, 5rem); align-items: start;
}
.contact-direct { display: grid; gap: 1.6rem; margin-top: 2.4rem; }
.contact-direct div { border-top: 1px solid var(--line-l); padding-top: 1rem; }
.contact-direct dt {
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .2em;
  text-transform: uppercase; color: var(--copper); margin-bottom: .3rem;
}
.contact-direct dd a { text-decoration: none; }
.contact-direct dd a:hover { color: var(--copper); }

.form { display: grid; gap: 1.4rem; grid-template-columns: 1fr 1fr; }
.form .field--full { grid-column: 1 / -1; }
.field label {
  display: block; font-family: var(--font-mono); font-size: .72rem;
  letter-spacing: .18em; text-transform: uppercase; color: var(--slate);
  margin-bottom: .45rem;
}
.field label small { color: var(--stone); letter-spacing: .1em; }
.field input, .field select, .field textarea {
  width: 100%; background: #FFFFFF; border: 1px solid var(--line-l);
  padding: .8rem .9rem; font-family: var(--font-body); font-size: 1rem;
  border-radius: 0; transition: border-color .15s, box-shadow .15s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--gold);
  box-shadow: 0 0 0 1px var(--gold);
}
.field textarea { min-height: 9rem; resize: vertical; }
.field input[type="file"] { padding: .6rem .9rem; font-family: var(--font-mono); font-size: .8rem; }
.form__submit { grid-column: 1 / -1; margin-top: .4rem; }
.form__fineprint {
  grid-column: 1 / -1; font-size: .85rem; color: var(--stone);
  font-style: italic;
}
.hidden { display: none !important; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink); color: var(--mist);
  padding-block: clamp(3.5rem, 7vw, 5.5rem) 2.2rem;
  position: relative; overflow: hidden;
  border-top: 1px solid var(--line-d);
}
.site-footer .wrap { position: relative; z-index: 1; }
.footer-grid {
  display: grid; grid-template-columns: minmax(0, 2fr) 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem); padding-bottom: 3rem;
}
.footer-brand svg, .footer-brand img { height: 44px; width: auto; color: var(--paper); margin-bottom: 1.1rem; }
.footer-brand p { font-size: .92rem; max-width: 30ch; }
.footer-tagline {
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .26em;
  text-transform: uppercase; color: var(--copper); margin-bottom: 1rem;
}
.footer-col h3 {
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .22em;
  text-transform: uppercase; color: var(--paper); font-weight: 500;
  margin-bottom: 1.1rem;
}
.footer-col ul { list-style: none; display: grid; gap: .55rem; }
.footer-col a { text-decoration: none; font-size: .95rem; }
.footer-col a:hover { color: var(--copper); }
.footer-legal {
  border-top: 1px solid var(--line-d); padding-top: 1.6rem;
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: .7rem; letter-spacing: .14em;
  text-transform: uppercase;
}

/* ---------- Reveal animations (JS-gated: no-JS visitors see everything) ---------- */
html.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
html.js .reveal.is-in { opacity: 1; transform: none; }
html.js .reveal[data-delay="1"] { transition-delay: .12s; }
html.js .reveal[data-delay="2"] { transition-delay: .24s; }
html.js .reveal[data-delay="3"] { transition-delay: .36s; }

/* Hero entrance on page load */
@keyframes rise { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: none; } }
html.js .hero .reveal.is-in { animation: rise .8s ease both; transition: none; }
html.js .hero .reveal.is-in[data-delay="1"] { animation-delay: .12s; }
html.js .hero .reveal.is-in[data-delay="2"] { animation-delay: .24s; }
html.js .hero .reveal.is-in[data-delay="3"] { animation-delay: .36s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation: none !important; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .split, .contact-grid { grid-template-columns: 1fr; }
  .split__aside { position: static; }
  .process ol { grid-template-columns: repeat(2, 1fr); gap: 0 2rem; }
  .doc-grid { grid-template-columns: 1fr; }
  .svc-detail__row { grid-template-columns: 1fr; gap: 1rem; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--ink-2); border-bottom: 1px solid var(--line-d);
    display: none; padding: .6rem 0 1rem;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: .85rem var(--gutter); border-bottom: none; }
  .site-nav a[aria-current="page"] { color: var(--copper); }
  .site-nav .btn { margin: .8rem var(--gutter) 0; text-align: center; }
  .brand__name b { font-size: .85rem; letter-spacing: .22em; }
  .form { grid-template-columns: 1fr; }
  .step { grid-template-columns: 1fr; gap: .5rem; }
  .process ol { grid-template-columns: 1fr; }
  .process li { padding-right: 0; }
  .svc-index__row { grid-template-columns: 3rem 1fr; }
  .svc-index__hint { display: none; }
}