/* ============================================================
   AJM Engineering: styles
   Minimal. Sharp corners, restrained display type, one muted accent.
   ============================================================ */

:root {
  --bg:        #ffffff;
  --surface:   #f3f3ee;
  --text:      #0a0a0a;
  --text-dim:  #57574f;
  --line:      #e2e2da;
  --accent:    #2f4bb8;
  --accent-ink:#ffffff;

  --max: 1140px;
  --pad-x: clamp(1.25rem, 5vw, 4rem);
  --section-y: clamp(3.25rem, 8vw, 5.5rem);

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

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #0a0a0a;
    --surface:   #151515;
    --text:      #f4f4ee;
    --text-dim:  #9a9a90;
    --line:      #272724;
    --accent:    #8b9bdc;
    --accent-ink:#0a0a0a;
  }
}

/* ---------- reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 { font-family: var(--font-display); font-weight: 700; line-height: 1; margin: 0; }
p { margin: 0; }
a { color: inherit; }
img { max-width: 100%; display: block; }
ul, ol { margin: 0; padding: 0; list-style: none; }

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

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

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 1rem; top: -3rem;
  background: var(--text); color: var(--bg);
  padding: 0.6rem 1rem; font-family: var(--font-mono); font-size: 0.8rem;
  z-index: 100; transition: top 0.15s ease;
}
.skip-link:focus { top: 1rem; }

/* ---------- layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.section { padding-block: var(--section-y); }
.section--alt { background: var(--surface); border-block: 1px solid var(--line); }

.section__head { max-width: 46rem; margin-bottom: clamp(2.5rem, 6vw, 4rem); }
.section__title {
  font-size: clamp(2rem, 1.2rem + 3vw, 2.9rem);
  letter-spacing: -0.015em;
  margin-top: 0.75rem;
}
.section__intro { color: var(--text-dim); margin-top: 1.25rem; max-width: 42rem; }

/* ---------- kicker (mono label) ---------- */
.kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0;
}

/* ---------- header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.site-header.is-scrolled { border-bottom-color: var(--line); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.5rem;
}

.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  text-decoration: none;
  font-family: var(--font-display);
}
.wordmark__mark {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  background: var(--text);
  color: var(--bg);
  padding: 0.15em 0.4em;
}
.wordmark__label {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-dim);
  letter-spacing: 0.02em;
}

.nav { display: flex; align-items: center; }
.nav__menu {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2.25rem);
}
.nav__menu a {
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  transition: color 0.15s ease;
}
.nav__menu a:hover { color: var(--text); }
.nav__cta {
  color: var(--text) !important;
  border: 1px solid var(--text);
  padding: 0.55rem 0.95rem;
}
.nav__cta:hover { background: var(--text); color: var(--bg) !important; }

.nav__toggle {
  display: none;
  width: 2.75rem; height: 2.75rem;
  background: none; border: 1px solid var(--line);
  cursor: pointer;
  position: relative;
}
.nav__toggle-bar,
.nav__toggle-bar::before,
.nav__toggle-bar::after {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 1.1rem; height: 2px;
  background: var(--text);
  transform: translate(-50%, -50%);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav__toggle-bar::before { transform: translate(-50%, -7px); }
.nav__toggle-bar::after  { transform: translate(-50%, 5px); }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar { background: transparent; }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar::before { transform: translate(-50%, -50%) rotate(45deg); }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar::after  { transform: translate(-50%, -50%) rotate(-45deg); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.045em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.95rem 1.6rem;
  border: 1px solid var(--text);
  transition: transform 0.12s ease, background-color 0.15s ease, color 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn--primary:hover { background: var(--text); border-color: var(--text); color: var(--bg); }
.btn--ghost { background: transparent; color: var(--text); }
.btn--ghost:hover { background: var(--text); color: var(--bg); }
.btn--lg { padding: 1.15rem 2rem; font-size: 0.95rem; }

/* ---------- hero ---------- */
.hero { padding-block: clamp(3.5rem, 10vw, 8rem) clamp(3rem, 8vw, 6rem); }
.hero__title {
  font-size: clamp(2.6rem, 1rem + 6.5vw, 4.75rem);
  letter-spacing: -0.02em;
  margin: 1.5rem 0 0;
  max-width: 18ch;
}
.hero__title .accent { color: var(--accent); }
.hero__lede {
  margin-top: 1.75rem;
  max-width: 46rem;
  color: var(--text-dim);
  font-size: clamp(1.05rem, 1rem + 0.35vw, 1.3rem);
}
.hero__actions {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ---------- cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.cards--3 { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--bg);
  padding: clamp(1.75rem, 4vw, 2.75rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: background-color 0.15s ease;
}
.section--alt .card { background: var(--surface); }
.card:hover { background: color-mix(in srgb, var(--accent) 4%, var(--bg)); }
.section--alt .card:hover { background: color-mix(in srgb, var(--accent) 4%, var(--surface)); }

.card--feature { position: relative; }
.card--feature::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 2px;
  background: var(--accent);
}

.card__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}
.card__title {
  font-size: clamp(1.2rem, 1rem + 0.9vw, 1.6rem);
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.card__body { color: var(--text-dim); font-size: 0.98rem; }

/* ---------- about ---------- */
.about__cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 17rem;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.about__body { max-width: 44rem; display: flex; flex-direction: column; gap: 1.4rem; }
.about__body strong { font-weight: 600; color: var(--text); }

.facts {
  margin: 0;
  border-top: 1px solid var(--line);
}
.facts > div {
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--line);
}
.facts dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 0.4rem;
}
.facts dd { margin: 0; font-size: 0.92rem; line-height: 1.45; }

.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}
.stack li {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.03em;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  color: var(--text-dim);
}

.link-arrow {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
  color: var(--text);
  transition: color 0.15s ease, border-color 0.15s ease;
}
.link-arrow::after { content: " \2192"; color: var(--accent); }
.link-arrow:hover { color: var(--accent); }

/* ---------- track record ---------- */
.proof { display: flex; flex-direction: column; }
.proof__item {
  display: grid;
  grid-template-columns: 16rem 1fr;
  gap: clamp(1rem, 4vw, 3rem);
  padding-block: clamp(1.75rem, 4vw, 2.75rem);
  border-top: 1px solid var(--line);
}
.proof__item:last-child { border-bottom: 1px solid var(--line); }

.proof__label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.proof__body {
  color: var(--text-dim);
  font-size: 0.98rem;
  max-width: 44rem;
}

/* ---------- availability ---------- */
.availability__note {
  margin-top: 2rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  color: var(--text-dim);
}
.availability__note strong { color: var(--text); font-weight: 500; }

/* ---------- contact ---------- */
.contact { text-align: left; }
.contact__title {
  font-size: clamp(2.2rem, 1rem + 4vw, 3.4rem);
  letter-spacing: -0.018em;
  margin: 1rem 0 0;
  max-width: 20ch;
}
.contact__lede {
  margin: 1.5rem 0 2.5rem;
  max-width: 40rem;
  color: var(--text-dim);
}
.contact__alt { margin-top: 2rem; font-size: 0.95rem; color: var(--text-dim); }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 2.5rem;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.footer-inner__copy {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  letter-spacing: 0.03em;
}
.footer-inner__top {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-decoration: none;
  color: var(--text-dim);
  letter-spacing: 0.03em;
}
.footer-inner__top:hover { color: var(--text); }
.wordmark--sm .wordmark__mark { font-size: 0.95rem; }
.wordmark--sm .wordmark__label { font-size: 0.85rem; }

/* ---------- reveal animation ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 860px) {
  .cards, .cards--3 { grid-template-columns: 1fr; }
  .proof__item { grid-template-columns: 1fr; }
  .about__cols { grid-template-columns: 1fr; }

  .nav__toggle { display: block; z-index: 60; }
  .nav__menu {
    position: fixed;
    inset: 4.5rem 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem var(--pad-x) 1.5rem;
    transform: translateY(-120%);
    transition: transform 0.25s ease;
  }
  .nav__menu.is-open { transform: translateY(0); }
  .nav__menu li { width: 100%; }
  .nav__menu a {
    display: block;
    width: 100%;
    padding: 1rem 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--line);
  }
  .nav__menu li:last-child a { border-bottom: 0; }
  .nav__cta {
    background: var(--accent);
    border: 1px solid var(--accent);
    color: var(--accent-ink) !important;
    margin-top: 1rem;
    padding: 1rem;
    text-align: center;
  }
  .nav__cta:hover { background: var(--accent); border-color: var(--accent); }
}

@media (max-width: 460px) {
  .hero__actions .btn { width: 100%; }
}