/* ==========================================================================
   Build Event — design tokens
   Palette:  ink #14171A · concrete #EDEAE2 · paper #F7F5F0
             steel #33526E · brass #B98A46 · brass-light #D9B87C
   Type:     Display  — "Space Grotesk"  (architectural, geometric)
             Body     — "Inter"
             Utility  — "IBM Plex Mono"  (blueprint annotations, specs)
   Signature: blueprint grid + drawing-style annotation tags
   ========================================================================== */

:root {
  --ink: #14171A;
  --ink-soft: #1E2226;
  --concrete: #EDEAE2;
  --paper: #F7F5F0;
  --steel: #33526E;
  --steel-light: #4C7096;
  --brass: #B98A46;
  --brass-light: #D9B87C;
  --line: rgba(20, 23, 26, 0.12);
  --line-dark: rgba(247, 245, 240, 0.14);

  --font-display: "Space Grotesk", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --container: 1180px;
  --radius: 2px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brass);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--brass);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.05;
  margin: 0;
  letter-spacing: -0.01em;
}

h2.section-title {
  font-size: clamp(28px, 3.6vw, 44px);
  max-width: 640px;
}

p { margin: 0; }
.lede {
  font-size: 17px;
  color: rgba(20,23,26,0.68);
  max-width: 480px;
  margin-top: 14px;
}

.btn {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 26px;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  transition: background .2s ease, color .2s ease, transform .2s ease;
}
.btn:hover { background: var(--brass); border-color: var(--brass); transform: translateY(-1px); }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--ink); color: var(--paper); }
.btn.on-dark { border-color: var(--line-dark); color: var(--paper); background: transparent; }
.btn.on-dark:hover { background: var(--brass); border-color: var(--brass); color: var(--ink); }

/* ---------------------------------------------------------------- header */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 22px 0;
  transition: background .25s ease, padding .25s ease, border-color .25s ease;
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(20,23,26,0.92);
  backdrop-filter: blur(8px);
  padding: 14px 0;
  border-color: var(--line-dark);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; }

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--paper);
  letter-spacing: -0.01em;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.logo span { color: var(--brass); }

nav.main-nav { display: flex; gap: 34px; }
nav.main-nav a {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(247,245,240,0.72);
  transition: color .2s ease;
}
nav.main-nav a:hover { color: var(--brass-light); }

/* ------------------------------------------------------------------ hero */
.hero {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  padding: 168px 0 96px;
  overflow: hidden;
}
.hero-photo {
  position: absolute;
  inset: 0;
  background: url("https://images.unsplash.com/photo-1535732759880-bbd5c7265e3f?auto=format&fit=crop&w=1800&q=80") center/cover no-repeat;
  opacity: 0.42;
}
.hero-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(20,23,26,0.55) 0%, rgba(20,23,26,0.92) 78%, var(--ink) 100%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.5;
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 2; }

.hero-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  border-bottom: 1px solid var(--line-dark);
  padding-bottom: 36px;
}
.hero-heading {
  font-size: clamp(48px, 7.4vw, 96px);
  max-width: 780px;
}
.hero-heading em {
  font-style: normal;
  color: var(--brass-light);
}
.hero-coords {
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(247,245,240,0.55);
  text-align: right;
  line-height: 1.7;
  white-space: nowrap;
}

.hero-bottom {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  padding-top: 40px;
  align-items: end;
}
.hero-bottom .lede { max-width: 460px; color: rgba(247,245,240,0.72); }
.hero-actions { display: flex; gap: 14px; margin-top: 28px; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-left: 1px solid var(--line-dark);
}
.hero-stat { padding: 0 18px; }
.hero-stat .num {
  font-family: var(--font-display);
  font-size: 30px;
  color: var(--brass-light);
}
.hero-stat .lab {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: rgba(247,245,240,0.55);
  margin-top: 4px;
}

/* --------------------------------------------------------------- marquee */
.marquee {
  background: var(--brass);
  color: var(--ink);
  overflow: hidden;
  white-space: nowrap;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.marquee-track {
  display: inline-flex;
  animation: scroll 28s linear infinite;
}
.marquee-track span {
  font-family: var(--font-mono);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 12px 28px;
  display: inline-flex;
  align-items: center;
  gap: 28px;
}
.marquee-track span::after { content: "◆"; font-size: 9px; opacity: .6; }
@keyframes scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
}

/* ------------------------------------------------------------- sections */
section { padding: 108px 0; }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  margin-bottom: 56px;
}

/* --------------------------------------------------------------services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.service-card {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 40px 32px;
  transition: background .2s ease;
}
.service-card:hover { background: rgba(185,138,70,0.08); }
.service-card .code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--brass);
}
.service-card h3 {
  font-size: 21px;
  margin: 22px 0 12px;
}
.service-card p {
  font-size: 14.5px;
  color: rgba(20,23,26,0.65);
}

/* --------------------------------------------------------------- process */
.process {
  background: var(--ink);
  color: var(--paper);
}
.process .section-title, .process .eyebrow { color: var(--paper); }
.process .eyebrow { color: var(--brass-light); }
.process-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  position: relative;
}
.process-list::before {
  content: "";
  position: absolute;
  top: 13px;
  left: 0; right: 0;
  height: 1px;
  background: var(--line-dark);
}
.process-step { position: relative; padding-top: 40px; }
.process-step .dot {
  position: absolute;
  top: 6px; left: 0;
  width: 15px; height: 15px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--brass);
}
.process-step .step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--brass-light);
}
.process-step h4 { font-size: 17px; margin: 12px 0 8px; }
.process-step p { font-size: 13.5px; color: rgba(247,245,240,0.6); }

/* -------------------------------------------------------------- projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  background: var(--line);
}
.project-card {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--ink);
}
.project-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.project-card:hover img { transform: scale(1.06); }
.project-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(20,23,26,0.9) 0%, rgba(20,23,26,0.05) 55%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 26px;
  color: var(--paper);
}
.project-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--brass-light);
  margin-bottom: 8px;
}
.project-overlay h3 { font-size: 20px; }
.project-loc { font-size: 12.5px; color: rgba(247,245,240,0.65); margin-top: 6px; }

/* ------------------------------------------------------------------ about */
.about {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 70px;
  align-items: center;
}
.about-figure {
  position: relative;
  border: 1px solid var(--line);
  padding: 18px;
}
.about-figure img { aspect-ratio: 3/4; object-fit: cover; }
.about-figure .frame-tag {
  position: absolute;
  bottom: -1px; left: -1px;
  background: var(--ink);
  color: var(--brass-light);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 8px 14px;
  letter-spacing: 0.05em;
}
.about-body .lede { max-width: 100%; font-size: 17px; color: rgba(20,23,26,0.72); }
.about-points {
  margin-top: 32px;
  display: grid;
  gap: 18px;
}
.about-point {
  display: flex;
  gap: 16px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.about-point .mk { font-family: var(--font-mono); color: var(--brass); font-size: 12px; padding-top: 3px; }
.about-point h4 { font-size: 16px; margin-bottom: 4px; }
.about-point p { font-size: 14px; color: rgba(20,23,26,0.6); }

/* ---------------------------------------------------------------- contact */
.contact {
  background: var(--concrete);
  border-top: 1px solid var(--line);
}
.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 70px;
}
.contact-info .lede { color: rgba(20,23,26,0.68); }
.contact-detail { margin-top: 34px; }
.contact-detail .k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brass);
}
.contact-detail .v { font-size: 20px; margin-top: 6px; font-family: var(--font-display); font-weight: 700; }
.contact-detail + .contact-detail { margin-top: 24px; }

.contact-form {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 40px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(20,23,26,0.55);
  margin-bottom: 8px;
}
.field-input {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 13px 14px;
  font-family: var(--font-body);
  font-size: 14.5px;
  color: var(--ink);
  border-radius: var(--radius);
}
.field-input:focus {
  outline: none;
  border-color: var(--brass);
  box-shadow: 0 0 0 3px rgba(185,138,70,0.18);
}
textarea.field-input { resize: vertical; }

.alert {
  padding: 14px 16px;
  font-size: 14px;
  margin-bottom: 20px;
  border-left: 3px solid var(--brass);
  background: rgba(185,138,70,0.1);
}
.alert.error { border-color: #B3453D; background: rgba(179,69,61,0.08); }

/* ----------------------------------------------------------------- footer */
footer {
  background: var(--ink);
  color: rgba(247,245,240,0.6);
  padding: 56px 0 28px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line-dark);
}
.footer-brand .logo { margin-bottom: 12px; }
.footer-brand p { font-size: 13.5px; max-width: 300px; }
.footer-cols { display: flex; gap: 70px; }
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brass-light);
  margin-bottom: 14px;
}
.footer-col a, .footer-col p { display: block; font-size: 13.5px; margin-bottom: 8px; color: rgba(247,245,240,0.62); }
.footer-col a:hover { color: var(--brass-light); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 24px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
}

/* ----------------------------------------------------------- scroll fx */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* --------------------------------------------------------------- mobile */
@media (max-width: 940px) {
  nav.main-nav { display: none; }
  .hero-top { flex-direction: column; align-items: flex-start; gap: 20px; }
  .hero-coords { text-align: left; }
  .hero-bottom { grid-template-columns: 1fr; gap: 32px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); row-gap: 22px; border-left: none; }
  .services-grid { grid-template-columns: 1fr; }
  .process-list { grid-template-columns: 1fr; gap: 30px; }
  .process-list::before { display: none; }
  .projects-grid { grid-template-columns: 1fr; }
  .about { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-top { flex-direction: column; gap: 36px; }
  .footer-cols { gap: 40px; flex-wrap: wrap; }
  section { padding: 76px 0; }
  .hero { padding: 140px 0 64px; }
}