:root {
  --white: #ffffff;
  --ink: #111111;
  --grey: #a0a0a0;
  --serif: Didot, "Playfair Display", Georgia, serif;
  --sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  /* Swap for a real photo, e.g. url("hero.jpg"). Rendered greyscale either way. */
  --hero-image: url("hero.png");
  --nav-h: 64px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; border-radius: 0; }

html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }

body {
  background: var(--white);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

body.menu-open { overflow: hidden; }

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* Links with left-to-right underline */
.link {
  position: relative;
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  line-height: 1.6;
}
.link::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.link:hover::after, .link:focus-visible::after { transform: scaleX(1); }
.link--cta { margin-top: 2.5rem; }

/* Nav */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: var(--white);
  border-bottom: 1px solid transparent;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 clamp(1.25rem, 3vw, 3rem);
  z-index: 100;
  transition: border-color 0.4s ease;
}
.nav.scrolled { border-bottom-color: var(--ink); }
.nav__side { display: flex; gap: 2.2rem; }
.nav__right { justify-content: flex-end; }

.wordmark {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.15rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  white-space: nowrap;
  padding-left: 0.4em; /* optically centre trailing letter-spacing */
}

.burger { display: none; }

/* Mobile menu */
.menu {
  position: fixed; inset: 0;
  background: var(--white);
  z-index: 90;
  display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  gap: 1.5rem;
  opacity: 0; visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s;
}
.menu.open { opacity: 1; visibility: visible; }
.menu__link {
  font-family: var(--serif);
  font-size: 2.6rem;
  line-height: 1.2;
}

/* Hero */
.hero {
  position: relative;
  height: 100vh; height: 100svh;
  min-height: 520px;
  overflow: hidden;
  color: var(--white);
}
.hero__bg {
  position: absolute; inset: 0;
  background: #111 var(--hero-image) center / cover no-repeat;
  filter: grayscale(100%);
}
.hero__overlay { position: absolute; inset: 0; background: rgba(0, 0, 0, 0.45); }
.hero__content {
  position: absolute; left: 0; right: 0; bottom: 8vh;
  display: flex; flex-direction: column; align-items: center;
  gap: 2.5rem;
  text-align: center;
  padding: 0 1.5rem;
}
.hero__motto {
  font-size: 12px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  font-variant: small-caps;
}
.hero__discover {
  display: flex; flex-direction: column; align-items: center; gap: 0.8rem;
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}
.hero__discover svg { transition: transform 0.4s ease; }
.hero__discover:hover svg { transform: translateY(5px); }

/* Sections */
.section { padding: 12rem 0; }
.container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 clamp(1.25rem, 4vw, 4rem); }
.container--narrow { max-width: 820px; }

.rule { border: 0; border-top: 1px solid var(--ink); max-width: 1280px; margin: 0 auto; width: calc(100% - 2 * clamp(1.25rem, 4vw, 4rem)); }

.label {
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--grey);
  margin-bottom: 2rem;
}
.heading {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.2rem, 4.5vw, 4rem);
  line-height: 1.15;
  letter-spacing: 0.01em;
  margin-bottom: 3rem;
}
.body { max-width: 34rem; margin-bottom: 1.25rem; }

/* Services */
.service {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 2rem;
  padding: 5rem 0 0;
  margin-top: 5rem;
  border-top: 1px solid var(--ink);
}
.service__num { font-family: var(--serif); font-weight: 400; font-size: 1.6rem; }
.service__name {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.4rem, 5.5vw, 5rem);
  line-height: 1.1;
  margin-bottom: 2rem;
}

/* JustFund */
.section--dark { background: var(--ink); color: var(--white); }
.section--dark .label { color: var(--grey); }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 8rem; align-items: start; }
.contact .heading { margin-bottom: 2rem; }

.field { margin-bottom: 2.2rem; display: flex; flex-direction: column; }
.field label {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--grey);
}
.field input, .field select, .field textarea {
  font: inherit;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--ink);
  border-radius: 0;
  padding: 0.7rem 0;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  resize: none;
}
.field input:focus, .field select:focus, .field textarea:focus { border-bottom-width: 2px; padding-bottom: calc(0.7rem - 1px); }

.btn {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--ink);
  padding: 1.1rem 2.8rem;
  cursor: pointer;
  transition: background 0.3s ease, color 0.3s ease;
}
.btn:hover, .btn:focus-visible { background: var(--ink); color: var(--white); }

/* Footer */
.footer { border-top: 1px solid var(--ink); padding: 6rem 0 3rem; }
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 5rem; }
.footer__mark {
  font-family: var(--serif);
  font-size: 1.1rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.footer__ack { max-width: 32rem; font-size: 13px; line-height: 1.8; }
.footer li { margin-bottom: 0.8rem; }
.footer .label { margin-bottom: 1.5rem; }
.footer__copy {
  margin-top: 6rem;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--grey);
}

/* Fade in */
.fade { opacity: 1; }
.js .fade { opacity: 0; transform: translateY(24px); transition: opacity 1s ease, transform 1s ease; }
.fade.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fade { opacity: 1; transform: none; transition: none; }
}

/* Responsive */
@media (max-width: 900px) {
  .nav { grid-template-columns: 1fr auto 1fr; }
  .nav__side { display: none; }
  .wordmark { grid-column: 2; font-size: 1rem; letter-spacing: 0.3em; }
  .burger {
    display: flex; flex-direction: column; justify-content: center; gap: 7px;
    grid-column: 3; justify-self: end;
    width: 32px; height: 32px;
    background: none; border: 0; cursor: pointer;
  }
  .burger span { display: block; width: 24px; height: 1px; background: var(--ink); margin-left: auto; transition: transform 0.3s ease; }
  .burger.open span:first-child { transform: translateY(4px) rotate(45deg); }
  .burger.open span:last-child { transform: translateY(-4px) rotate(-45deg); }

  .section { padding: 7rem 0; }
  .service { grid-template-columns: 1fr; gap: 1rem; padding-top: 3rem; margin-top: 3rem; }
  .contact { grid-template-columns: 1fr; gap: 4rem; }
  .footer__grid { grid-template-columns: 1fr; gap: 3rem; }
}