/* Atterbury — Editorial Dark design system */

:root {
  --bg: #0E0E0C;
  --bg-raised: #131310;
  --ink: #F2EFE6;
  --ink-70: rgba(242, 239, 230, 0.7);
  --ink-60: rgba(242, 239, 230, 0.6);
  --ink-45: rgba(242, 239, 230, 0.45);
  --ink-40: rgba(242, 239, 230, 0.4);
  --line: rgba(242, 239, 230, 0.12);
  --line-strong: rgba(242, 239, 230, 0.3);
  --accent: #C8F04A;
  --serif: 'Instrument Serif', serif;
  --sans: 'Hanken Grotesk', sans-serif;
  --pad-x: clamp(24px, 4.5vw, 64px);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}

a { color: inherit; text-decoration: none; }
img { display: block; }

.serif { font-family: var(--serif); font-weight: 400; }

/* ---------- Nav ---------- */
.at-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 26px var(--pad-x);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(14, 14, 12, 0.88);
  backdrop-filter: blur(12px);
  z-index: 50;
}
.at-wordmark { font-family: var(--serif); font-size: 26px; letter-spacing: 0.01em; }
.at-nav-links { display: flex; gap: clamp(20px, 3vw, 40px); font-size: 15px; color: rgba(242, 239, 230, 0.65); }
.at-nav-links a { padding: 4px 0; border-bottom: 1px solid transparent; transition: color 0.2s, border-color 0.2s; }
.at-nav-links a:hover { color: var(--ink); }
.at-nav-links a.active { color: var(--ink); border-bottom-color: var(--accent); }
.at-nav-cta {
  font-size: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--line-strong);
  padding: 10px 22px;
  border-radius: 99px;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  white-space: nowrap;
}
.at-nav-cta:hover { background: var(--ink); color: var(--bg); border-color: var(--ink); }

/* ---------- Type ---------- */
.at-h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(48px, 6.6vw, 96px);
  line-height: 1.02;
  letter-spacing: -0.01em;
  margin: 0;
  text-wrap: balance;
}
.at-h1 em, .at-h2 em { font-style: italic; color: var(--accent); }
.at-h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(34px, 3.6vw, 52px);
  line-height: 1.1;
  margin: 0;
  max-width: 760px;
  text-wrap: balance;
}
.at-kicker {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(242, 239, 230, 0.55);
}
.at-kicker::before { content: ''; display: block; width: 36px; height: 1px; background: var(--accent); }

/* ---------- Buttons ---------- */
.at-btn-primary {
  display: inline-block;
  background: var(--ink);
  color: var(--bg);
  font-size: 15px;
  font-weight: 600;
  padding: 16px 32px;
  border-radius: 99px;
  letter-spacing: 0.02em;
  border: 1px solid var(--ink);
  cursor: pointer;
  font-family: var(--sans);
  transition: background 0.2s, color 0.2s;
}
.at-btn-primary:hover { background: var(--accent); border-color: var(--accent); }
.at-btn-ghost {
  display: inline-block;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--sans);
  font-size: 15px;
  color: var(--ink-70);
  padding: 16px 8px;
  transition: color 0.2s;
}
.at-btn-ghost:hover { color: var(--accent); }

/* ---------- Sections ---------- */
.at-section { padding: clamp(64px, 7vw, 96px) var(--pad-x); }
.at-section-head {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  margin-bottom: clamp(40px, 5vw, 64px);
}
.at-section-label {
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  padding-top: 10px;
}
.at-raised { background: var(--bg-raised); }

/* ---------- Hero ---------- */
.at-hero { padding: clamp(70px, 8vw, 110px) var(--pad-x) clamp(60px, 7vw, 90px); }
.at-hero .at-kicker { margin-bottom: 36px; }
.at-hero-foot {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  margin-top: clamp(44px, 5vw, 72px);
  gap: 40px;
}
.at-hero-sub { font-size: clamp(17px, 1.4vw, 20px); line-height: 1.6; color: var(--ink-70); max-width: 520px; margin: 0; }
.at-hero-cta { display: flex; gap: 16px; align-items: center; flex-shrink: 0; }

/* ---------- Proof strip ---------- */
.at-logos {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  align-items: center;
  padding: 36px var(--pad-x);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.at-logos-label { font-size: 13px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-40); }
.at-logos-row { display: flex; justify-content: space-between; align-items: baseline; gap: 18px; flex-wrap: wrap; }
.at-logo-item { font-family: var(--serif); font-size: clamp(19px, 1.7vw, 24px); color: rgba(242, 239, 230, 0.85); }
@media (max-width: 980px) {
  .at-logos-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px 0; }
  .at-logo-item { text-align: center; }
}

/* ---------- Service rows ---------- */
.at-services { border-top: 1px solid var(--line); }
.at-service-row {
  display: grid;
  grid-template-columns: 90px 1fr 1.2fr;
  gap: 40px;
  align-items: baseline;
  padding: 34px 12px;
  margin: 0 -12px;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s;
}
a.at-service-row:hover { background: rgba(242, 239, 230, 0.04); }
a.at-service-row:hover .at-service-num { color: var(--accent); }
.at-service-num { font-family: var(--serif); font-size: 22px; color: var(--ink-40); font-style: italic; transition: color 0.2s; }
.at-service-name { font-family: var(--serif); font-size: clamp(24px, 2.3vw, 32px); }
.at-service-desc { font-size: 16px; line-height: 1.6; color: var(--ink-60); }

/* ---------- Track record grid ---------- */
.at-track-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.at-track-cell {
  background: var(--bg-raised);
  padding: 40px 36px;
  min-height: 230px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 22px;
  transition: background 0.2s;
}
.at-track-cell:hover { background: #181814; }
.at-track-brand { font-size: 13px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-45); }
.at-track-claim { font-family: var(--serif); font-size: clamp(22px, 1.9vw, 27px); line-height: 1.25; }

/* ---------- Portrait treatment ---------- */
.at-portrait-wrap { position: relative; }
.at-portrait {
  width: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.08) brightness(0.82) sepia(0.28) saturate(0.55);
}
.at-portrait-wrap::after {
  /* deepen shadows toward the page black so the photo sits in the layout */
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(14, 14, 12, 0.05) 55%, rgba(14, 14, 12, 0.45) 100%);
  pointer-events: none;
}
.at-portrait-caption {
  position: absolute;
  left: 0;
  bottom: -34px;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-45);
}

/* ---------- Footer / CTA ---------- */
.at-cta { text-align: center; padding: clamp(80px, 9vw, 130px) var(--pad-x); border-top: 1px solid var(--line); }
.at-cta .at-h1 { font-size: clamp(44px, 5.6vw, 80px); }
.at-cta-sub { font-size: 18px; color: var(--ink-60); margin: 28px auto 44px; max-width: 520px; line-height: 1.6; }
.at-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 28px var(--pad-x);
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-40);
}
.at-footer a:hover { color: var(--accent); }

/* ---------- Word-build scroll effect ---------- */
.at-word {
  display: inline;
  transition: opacity 0.25s ease;
  will-change: opacity;
}

/* ---------- Scroll progress bar ---------- */
.at-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
  z-index: 60;
  pointer-events: none;
  will-change: transform;
}

/* ---------- Nav condense on scroll ---------- */
.at-nav { transition: padding 0.35s ease, background 0.35s ease, border-color 0.35s ease; }
.at-nav.scrolled { padding-top: 16px; padding-bottom: 16px; background: rgba(14, 14, 12, 0.94); }

/* ---------- Hamburger (mobile only) ---------- */
.at-nav-burger {
  display: none;
  width: 44px; height: 44px;
  background: none; border: none; cursor: pointer; padding: 0;
  flex-direction: column; align-items: center; justify-content: center; gap: 6px;
  z-index: 70;
}
.at-burger-line {
  display: block; width: 24px; height: 1.5px; background: var(--ink);
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.at-nav-burger.open .at-burger-line:nth-child(1) { transform: translateY(3.75px) rotate(45deg); }
.at-nav-burger.open .at-burger-line:nth-child(2) { transform: translateY(-3.75px) rotate(-45deg); }

/* ---------- Mobile menu overlay ---------- */
.at-mobile-menu {
  display: none;
  position: fixed; inset: 0; z-index: 55;
  background: rgba(14, 14, 12, 0.98);
  backdrop-filter: blur(10px);
  opacity: 0; visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}
.at-mobile-menu.open { opacity: 1; visibility: visible; }
.at-mobile-menu-inner {
  display: flex; flex-direction: column;
  height: 100%;
  padding: 116px var(--pad-x) 40px;
}
.at-mobile-menu-inner a {
  font-family: var(--serif);
  font-size: clamp(30px, 9vw, 40px);
  color: var(--ink);
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  opacity: 0; transform: translateY(14px);
  transition: opacity 0.4s ease, transform 0.4s ease, color 0.2s ease;
}
.at-mobile-menu-inner a:active { color: var(--accent); }
.at-mobile-menu.open .at-mobile-menu-inner a { opacity: 1; transform: none; }
.at-mobile-menu.open .at-mobile-menu-inner a:nth-child(1) { transition-delay: 0.06s; }
.at-mobile-menu.open .at-mobile-menu-inner a:nth-child(2) { transition-delay: 0.10s; }
.at-mobile-menu.open .at-mobile-menu-inner a:nth-child(3) { transition-delay: 0.14s; }
.at-mobile-menu.open .at-mobile-menu-inner a:nth-child(4) { transition-delay: 0.18s; }
.at-mobile-menu.open .at-mobile-menu-inner a:nth-child(5) { transition-delay: 0.22s; }
.at-mobile-cta {
  margin-top: auto;
  font-family: var(--sans);
  font-size: 15px; letter-spacing: 0.08em; text-transform: uppercase;
  text-align: center;
  border: 1px solid var(--line-strong);
  border-radius: 99px;
  padding: 20px 0;
}
.at-mobile-menu.open .at-mobile-cta { transition-delay: 0.28s; }
body.menu-open { overflow: hidden; }

/* ---------- Reveal on scroll ---------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s cubic-bezier(0.22,0.61,0.36,1), transform 0.7s cubic-bezier(0.22,0.61,0.36,1); }
  .reveal.in { opacity: 1; transform: none; }

  /* directional variant — slide in from the left */
  .reveal-left { transform: translateX(-36px); }
  .reveal-left.in { transform: none; }

  /* staggered children inside a revealed grid */
  .at-track-grid.reveal { transform: none; }
  .at-track-grid.reveal .at-track-cell { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
  .at-track-grid.reveal.in .at-track-cell { opacity: 1; transform: none; }
  .at-track-grid.reveal.in .at-track-cell:nth-child(1) { transition-delay: 0.00s; }
  .at-track-grid.reveal.in .at-track-cell:nth-child(2) { transition-delay: 0.07s; }
  .at-track-grid.reveal.in .at-track-cell:nth-child(3) { transition-delay: 0.14s; }
  .at-track-grid.reveal.in .at-track-cell:nth-child(4) { transition-delay: 0.21s; }
  .at-track-grid.reveal.in .at-track-cell:nth-child(5) { transition-delay: 0.28s; }
  .at-track-grid.reveal.in .at-track-cell:nth-child(6) { transition-delay: 0.35s; }

  /* hero gentle parallax + fade as you scroll past it */
  .at-hero[data-parallax] { will-change: transform, opacity; }
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .at-section-head { grid-template-columns: 1fr; gap: 16px; margin-bottom: 40px; }
  .at-logos { grid-template-columns: 1fr; gap: 20px; }
  .at-service-row { grid-template-columns: 70px 1fr; }
  .at-service-row .at-service-desc { grid-column: 2; }
  .at-track-grid { grid-template-columns: 1fr 1fr; }
  .at-nav-links { display: none; }
  .at-nav-cta { display: none; }
  .at-nav-burger { display: flex; }
  .at-mobile-menu { display: block; }
}
@media (max-width: 640px) {
  .at-track-grid { grid-template-columns: 1fr; }
  .at-service-row { grid-template-columns: 1fr; gap: 10px; }
  .at-service-row .at-service-desc { grid-column: 1; }
}