/* FORMA Build — Construction · Design · Development · Strategy
   Palette: charcoal #1C1C1C · off-white #F5F4F1 · orange #FF5C00
            concrete #9B9A96 · blueprint #DEDDD8
   Type: Archivo (head) + Inter (body) + IBM Plex Mono (data)
   Signature: sharp corners, hairline rules, index numbering, monospace metadata
*/

:root {
  --charcoal: #1C1C1C;
  --offwhite: #F5F4F1;
  --orange: #FF5C00;
  --concrete: #9B9A96;
  --blueprint: #DEDDD8;
  --ink-on-dark: #FFFFFF;

  --sp-1: 8px;
  --sp-2: 16px;
  --sp-3: 24px;
  --sp-4: 32px;
  --sp-5: 48px;
  --sp-6: 64px;
  --sp-7: 96px;
  --sp-8: 128px;

  --font-head: 'Archivo', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --transition: 300ms var(--ease-out);
}

* { box-sizing: border-box; border-radius: 0; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--charcoal);
  background: var(--offwhite);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3 {
  font-family: var(--font-head);
  color: var(--charcoal);
  margin: 0 0 0.5em;
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 800;
}

h1 { font-size: clamp(48px, 8vw, 96px); }
h2 { font-size: clamp(32px, 5vw, 56px); }
h3 { font-size: 24px; font-weight: 700; }

p { margin: 0 0 1em; }

.mono { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.02em; }

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 300;
  background: var(--orange);
  color: var(--offwhite);
  padding: 12px 18px;
}
.skip-link:focus { left: 0; }

/* Layout */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 var(--sp-3);
}

.section { padding: var(--sp-8) 0; }
.section--dark { background: var(--charcoal); color: var(--offwhite); }
.section--dark h2, .section--dark h3 { color: var(--offwhite); }

.section__head { max-width: 720px; margin-bottom: var(--sp-6); }
.section__head--row {
  max-width: none;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--sp-3);
}

.section__label {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
  margin: 0 0 var(--sp-2);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}
.section__label::before {
  content: "";
  width: var(--sp-4);
  height: 1px;
  background: var(--orange);
  display: inline-block;
}
.section__label--dark { color: var(--orange); }

.section__count { color: var(--concrete); margin: 0; }

.section--dark .section__count { color: var(--concrete); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
  padding: 15px 28px;
  border: 1px solid transparent;
  cursor: pointer;
  text-transform: uppercase;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
  text-decoration: none;
}
.btn:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }

.btn--orange { background: var(--orange); color: var(--offwhite); }
.btn--orange:hover { background: #e65300; color: var(--offwhite); transform: translateY(-2px); }

.btn--dark { background: var(--charcoal); color: var(--offwhite); }
.btn--dark:hover { background: var(--orange); color: var(--offwhite); transform: translateY(-2px); }

.btn--lg { padding: 18px 36px; font-size: 16px; }

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: transparent;
  color: var(--offwhite);
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.site-header.is-solid {
  background: var(--charcoal);
  border-bottom-color: rgba(222, 221, 216, 0.2);
  box-shadow: 0 12px 30px -18px rgba(0, 0, 0, 0.6);
}

.site-header__inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: var(--sp-2) var(--sp-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
}

.brand { display: inline-flex; align-items: baseline; gap: 10px; }
.brand:hover { color: inherit; }
.brand__word {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 26px;
  letter-spacing: 0.06em;
  color: inherit;
}
.brand__mark { color: var(--orange); font-size: 14px; margin-left: 2px; vertical-align: middle; }
.brand__sub {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--concrete);
}

.site-nav__close { display: none; }

.site-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}
.site-nav__list a {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: inherit;
  padding: 6px 0;
  position: relative;
}
.site-nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--orange);
  transition: width var(--transition);
}
.site-nav__list a:hover::after,
.site-nav__list a:focus-visible::after { width: 100%; }

.site-nav__cta { display: none; }

.site-header__actions { display: flex; align-items: center; gap: var(--sp-3); }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 12px;
  background: transparent;
  border: 1px solid var(--offwhite);
  cursor: pointer;
}
.hamburger:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }
.hamburger span { display: block; height: 2px; background: currentColor; transition: transform var(--transition), opacity var(--transition); }
.hamburger.is-open span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  color: var(--offwhite);
  background: var(--charcoal);
}
.hero__imgwrap { position: absolute; inset: 0; overflow: hidden; }
.hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(18%) contrast(1.04);
  animation: heroZoom 14s var(--ease-out) forwards;
}
@keyframes heroZoom { from { transform: scale(1.08); } to { transform: scale(1); } }
.hero__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(28, 28, 28, 0.35) 0%, rgba(28, 28, 28, 0.45) 40%, rgba(28, 28, 28, 0.88) 100%);
}

.hero__content {
  position: relative;
  max-width: 1240px;
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--sp-3) var(--sp-6);
}
.hero__index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--concrete);
  margin-bottom: var(--sp-4);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}
.hero__index .mono { color: var(--orange); }
.hero h1 { color: var(--offwhite); max-width: 900px; }
.hero__lede { max-width: 560px; font-size: 18px; color: #d6d5d0; margin: var(--sp-3) 0 var(--sp-5); }

.hero__foot {
  position: relative;
  display: flex;
  justify-content: space-between;
  gap: var(--sp-3);
  max-width: 1240px;
  width: 100%;
  margin: 0 auto;
  padding: var(--sp-3);
  border-top: 1px solid rgba(222, 221, 216, 0.25);
  color: var(--concrete);
}
.hero__foot-meta { color: var(--concrete); }

/* Pillars */
.pillars {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--blueprint);
}
.pillar { border-right: 1px solid var(--blueprint); }
.pillar:last-child { border-right: none; }

.pillar__link {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: var(--sp-4);
  background: var(--offwhite);
  transition: background var(--transition), color var(--transition);
}
.pillar__link:hover { background: var(--charcoal); color: var(--offwhite); text-decoration: none; }
.pillar__link:hover h3 { color: var(--offwhite); }
.pillar__link:hover .pillar__cta { color: var(--orange); }

.pillar__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-5);
}
.pillar__num { color: var(--orange); }
.pillar__arrow { color: var(--concrete); transition: color var(--transition), transform var(--transition); }
.pillar__link:hover .pillar__arrow { color: var(--orange); transform: translateX(4px); }

.pillar h3 { margin-bottom: var(--sp-2); }
.pillar p { font-size: 15px; color: var(--concrete); flex: 1; }
.pillar__link:hover p { color: #b9b8b3; }

.pillar__cta {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: var(--sp-4);
  color: var(--charcoal);
}

/* Projects */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border: 1px solid var(--blueprint);
  margin-bottom: var(--sp-5);
  width: max-content;
  max-width: 100%;
}
.filter {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: transparent;
  color: var(--concrete);
  border: none;
  padding: 12px 22px;
  cursor: pointer;
  border-right: 1px solid var(--blueprint);
  transition: background var(--transition), color var(--transition);
}
.filter:last-child { border-right: none; }
.filter:hover { color: var(--offwhite); background: var(--charcoal); }
.filter.is-active { background: var(--orange); color: var(--offwhite); }

.projects {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-5);
}

.project { transition: opacity var(--transition), transform var(--transition); }
.project.is-hidden { display: none; }

.project__link { display: block; text-decoration: none; }
.project__link:hover .project__figure img { transform: scale(1.03); }
.project__link:hover .project__name { color: var(--orange); }

.project__figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(222, 221, 216, 0.25);
}
.project__figure img {
  width: 100%;
  height: 460px;
  object-fit: cover;
  filter: grayscale(18%) contrast(1.03);
  transition: transform 600ms var(--ease-out);
}

.project__meta { padding-top: var(--sp-3); border-top: 1px solid var(--blueprint); margin-top: var(--sp-3); display: flex; flex-direction: column; gap: 6px; }
.project__name { color: var(--offwhite); margin: 0; transition: color var(--transition); }
.project__spec { color: var(--concrete); margin: 0; }

/* Process */
.process {
  list-style: none;
  margin: 0 0 var(--sp-4);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--blueprint);
}
.process__step {
  padding: var(--sp-4) var(--sp-3) var(--sp-4) 0;
  border-bottom: 1px solid var(--blueprint);
  border-right: 1px solid var(--blueprint);
  padding-right: var(--sp-3);
}
.process__step:last-child { border-right: none; }
.process__num { display: block; color: var(--orange); margin-bottom: var(--sp-3); }
.process h3 { margin-bottom: var(--sp-2); }
.process p { font-size: 15px; color: var(--concrete); margin: 0; }

.process__note { color: var(--concrete); }

/* Stats */
.stats { background: var(--charcoal); color: var(--offwhite); padding: var(--sp-7) 0; border-top: 1px solid rgba(222, 221, 216, 0.2); border-bottom: 1px solid rgba(222, 221, 216, 0.2); }
.stats__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-left: 1px solid rgba(222, 221, 216, 0.25);
}
.stat { padding: var(--sp-3); border-right: 1px solid rgba(222, 221, 216, 0.25); display: flex; flex-direction: column; gap: var(--sp-1); }
.stat__num { font-size: clamp(28px, 4vw, 44px); color: var(--orange); }
.stat__label { font-size: 14px; color: var(--concrete); letter-spacing: 0.04em; }

/* About */
.about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-7);
  align-items: center;
  margin-bottom: var(--sp-8);
}
.about__media { position: relative; }
.about__media img { width: 100%; height: 520px; object-fit: cover; filter: grayscale(20%); }
.about__caption { position: absolute; left: 0; bottom: var(--sp-3); background: var(--charcoal); color: var(--concrete); padding: 8px 14px; margin: 0; }
.about__lede { font-size: 20px; color: var(--charcoal); }
.about__body { color: var(--concrete); }

.about__values { list-style: none; margin: var(--sp-4) 0 0; padding: 0; }
.about__values li {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 12px 0;
  border-bottom: 1px solid var(--blueprint);
  font-family: var(--font-head);
  font-weight: 600;
}
.about__value { color: var(--orange); }

/* Team */
.team { margin-top: var(--sp-8); }
.team__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
}
.team__member { position: relative; }
.team__member img { width: 100%; height: 460px; object-fit: cover; filter: grayscale(1); transition: filter var(--transition); }
.team__member:hover img { filter: grayscale(0); }
.team__meta { padding-top: var(--sp-2); border-top: 1px solid var(--blueprint); margin-top: var(--sp-2); display: flex; flex-direction: column; gap: 4px; }
.team__meta h3 { font-size: 20px; margin: 0; }
.team__meta .mono { color: var(--concrete); margin: 0; }

/* CTA */
.cta { background: var(--charcoal); color: var(--offwhite); padding: var(--sp-8) 0; text-align: center; border-top: 1px solid rgba(222, 221, 216, 0.2); }
.cta h2 { color: var(--offwhite); font-size: clamp(44px, 7vw, 80px); }
.cta__lede { max-width: 560px; margin: 0 auto var(--sp-5); color: var(--concrete); font-size: 18px; }
.cta .section__label { justify-content: center; }
.cta .section__label::before { display: none; }

/* Contact */
.contact {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--sp-6);
  align-items: start;
}

.form { background: var(--offwhite); border: 1px solid var(--blueprint); padding: var(--sp-4); }
.form__grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-3); }
.form__field { display: flex; flex-direction: column; }
.form__field--full { grid-column: 1 / -1; }

.form label {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--charcoal);
  margin-bottom: 8px;
}
.form__opt { color: var(--concrete); text-transform: none; letter-spacing: 0; }

.form input[type="text"],
.form input[type="email"],
.form input[type="tel"],
.form select,
.form textarea {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--charcoal);
  background: var(--offwhite);
  border: 1px solid var(--blueprint);
  padding: 12px 14px;
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form input:focus-visible,
.form select:focus-visible,
.form textarea:focus-visible {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 92, 0, 0.18);
}
.form textarea { resize: vertical; min-height: 110px; }
.form select { appearance: auto; }

.form__actions { margin-top: var(--sp-4); display: flex; align-items: center; gap: var(--sp-3); flex-wrap: wrap; }
.form__note { color: var(--concrete); margin: 0; }

.form__error { display: none; font-family: var(--font-mono); font-size: 12.5px; color: var(--orange); margin-top: 6px; }
.form__field.is-invalid input,
.form__field.is-invalid select,
.form__field.is-invalid textarea { border-color: var(--orange); }
.form__field.is-invalid .form__error { display: block; }

.form__done { margin-top: var(--sp-4); padding: var(--sp-4); background: var(--charcoal); color: var(--offwhite); }
.form__done h3 { color: var(--offwhite); margin-bottom: 8px; }
.form__done p { color: var(--concrete); margin: 0; }
.form__done[hidden] { display: none; }

.contact__info { border-top: 1px solid var(--blueprint); }
.contact__row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: var(--sp-2);
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--blueprint);
}
.contact__label { color: var(--orange); margin: 0; }
.contact__value { margin: 0; font-size: 15px; }
.contact__value a { text-decoration: underline; text-underline-offset: 3px; }
.contact__value a:hover { color: var(--orange); }

.contact__map { margin-top: var(--sp-4); border: 1px solid var(--blueprint); line-height: 0; }
.contact__map iframe { width: 100%; height: 300px; border: 0; }

/* Footer */
.footer { background: var(--charcoal); color: var(--concrete); padding: var(--sp-7) 0 0; font-size: 15px; }
.footer h3 {
  color: var(--offwhite);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-bottom: var(--sp-3);
}
.footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer a { color: inherit; }
.footer a:hover { color: var(--orange); }

.footer__grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr 1.2fr;
  gap: var(--sp-5);
  padding-bottom: var(--sp-6);
  border-bottom: 1px solid rgba(222, 221, 216, 0.2);
}
.footer__ctacol { display: flex; flex-direction: column; align-items: flex-start; gap: var(--sp-3); }
.footer__note { margin: 0; color: var(--concrete); }

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-2);
  flex-wrap: wrap;
  padding: var(--sp-3) 0;
  font-size: 13px;
  border-bottom: 1px solid rgba(222, 221, 216, 0.2);
}
.footer__bottom p { margin: 0; }
.footer__legal { color: var(--concrete); margin: 0; }

.footer__wordmark {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(72px, 18vw, 220px);
  line-height: 1;
  letter-spacing: 0.02em;
  text-align: center;
  color: transparent;
  -webkit-text-stroke: 1px rgba(222, 221, 216, 0.35);
  margin: var(--sp-5) 0 0;
  user-select: none;
}

/* Reveal */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 400ms var(--ease-out), transform 400ms var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: none; }

/* Responsive */
@media (max-width: 1024px) {
  .pillars { grid-template-columns: repeat(2, 1fr); }
  .pillar:nth-child(2) { border-right: none; }
  .pillar:nth-child(-n+2) { border-bottom: 1px solid var(--blueprint); }
  .process { grid-template-columns: repeat(2, 1fr); }
  .process__step:nth-child(2) { border-right: none; }
  .process__step:nth-child(-n+2) { border-bottom: 1px solid var(--blueprint); }
  .team__grid { grid-template-columns: repeat(2, 1fr); }
  .stats__list { grid-template-columns: repeat(2, 1fr); }
  .about { grid-template-columns: 1fr; gap: var(--sp-5); }
  .contact { grid-template-columns: 1fr; }
}

@media (max-width: 820px) {
  .section { padding: var(--sp-6) 0; }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 250;
    background: var(--charcoal);
    color: var(--offwhite);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--sp-4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
  }
  .site-nav.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
  .site-nav__close {
    display: inline-flex;
    position: absolute;
    top: var(--sp-3);
    right: var(--sp-3);
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid rgba(222, 221, 216, 0.3);
    color: var(--offwhite);
    font-size: 24px;
    cursor: pointer;
  }
  .site-nav__list { flex-direction: column; gap: var(--sp-2); }
  .site-nav__list a { font-size: 26px; padding: 10px 20px; }
  .site-nav__cta { display: inline-flex; }

  .hamburger { display: flex; }
  .site-header__cta { display: none; }
  body.nav-locked { overflow: hidden; }
}

@media (max-width: 640px) {
  .pillars { grid-template-columns: 1fr; }
  .pillar { border-right: none; border-bottom: 1px solid var(--blueprint); }
  .pillar:last-child { border-bottom: none; }
  .process { grid-template-columns: 1fr; }
  .process__step { border-right: none; }
  .projects { grid-template-columns: 1fr; }
  .project__figure img { height: 340px; }
  .team__grid { grid-template-columns: 1fr; }
  .stats__list { grid-template-columns: 1fr; }
  .form__grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .hero__foot-meta { display: none; }
  .section__head--row { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .footer__grid { grid-template-columns: 1fr; }
  .filters { width: 100%; }
  .filter { flex: 1; border-right: 1px solid var(--blueprint); border-bottom: 1px solid var(--blueprint); }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .hero__img { animation: none; }
  .reveal { opacity: 1; transform: none; }
}