/* ============================================================
   jeremysherlock.com
   White / black / grey. No webfonts, no external requests.
   ============================================================ */

:root {
  color-scheme: light;
  --white: #ffffff;
  --paper: #f6f6f6;
  --mist: #ececec;
  --line: #dedede;
  --grey: #8a8a8a;
  --slate: #5c5c5c;
  --ink: #111111;
  --black: #0a0a0a;

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, monospace;

  --container: 1200px;
  --gutter: clamp(1.25rem, 4.5vw, 3rem);
  --section: clamp(4.5rem, 10vw, 8rem);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --fill-ease: cubic-bezier(0.785, 0.135, 0.15, 0.86);
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 { margin: 0; line-height: 1.02; text-wrap: balance; letter-spacing: -0.035em; }

h1 { font-size: clamp(2.75rem, 1.5rem + 6vw, 6.5rem); font-weight: 800; }
h2 { font-size: clamp(2.25rem, 1.4rem + 3.4vw, 4.25rem); font-weight: 800; }
h3 { font-size: clamp(1.5rem, 1.15rem + 1.4vw, 2.25rem); font-weight: 700; letter-spacing: -0.025em; }

p { margin: 0 0 1rem; }

a { color: inherit; }

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

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

ul { margin: 0; padding: 0; list-style: none; }

svg { display: inline-block; vertical-align: middle; }

.container { max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }

.lead {
  font-size: clamp(1.0625rem, 1rem + 0.4vw, 1.3125rem);
  font-weight: 300;
  line-height: 1.65;
  color: var(--slate);
  max-width: 56ch;
}

.lead strong { font-weight: 600; color: var(--ink); }

.skip {
  position: absolute;
  top: -100%;
  left: var(--gutter);
  z-index: 50;
  padding: 0.6rem 1rem;
  background: var(--ink);
  color: var(--white);
  font-weight: 700;
}

.skip:focus { top: 0.75rem; }

/* ------------------------------------------------------------
   Reveal on scroll (progressive: readable without JS)
   ------------------------------------------------------------ */

.js [data-reveal] { opacity: 0; transform: translateY(22px); }

.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.8s var(--ease), transform 0.9s var(--ease);
  transition-delay: var(--delay, 0ms);
}

@media (prefers-reduced-motion: reduce) {
  .js [data-reveal] { opacity: 1 !important; transform: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ------------------------------------------------------------
   Arrow fill button (CSS port of the arrow-fill-button component)
   ------------------------------------------------------------ */

.afb {
  --afb-bg: var(--ink);
  --afb-text: var(--white);
  --afb-fill: var(--white);
  --afb-fill-text: var(--ink);
  --circle: 2.6rem;
  --gap: 0.3rem;
  --pad: 1.6rem;
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 3.35rem;
  padding: 0 calc(var(--circle) + var(--gap) + 1.1rem) 0 var(--pad);
  border: 1px solid var(--afb-bg);
  border-radius: 999px;
  background: var(--afb-bg);
  color: var(--afb-text);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1;
  white-space: nowrap;
  text-decoration: none;
  overflow: hidden;
  isolation: isolate;
}

.afb--ghost { --afb-bg: var(--white); --afb-text: var(--ink); --afb-fill: var(--ink); --afb-fill-text: var(--white); border-color: var(--ink); }

.afb__label { position: relative; z-index: 1; padding-bottom: 1px; }

.afb__fill {
  position: absolute;
  z-index: 2;
  inset: calc((100% - var(--circle)) / 2) var(--gap) calc((100% - var(--circle)) / 2) calc(100% - var(--gap) - var(--circle));
  border-radius: 999px;
  background: var(--afb-fill);
  transition: inset 0.45s var(--fill-ease);
}

.afb__ghost {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  padding: 0 calc(var(--circle) + var(--gap) + 1.1rem) 0 var(--pad);
  color: var(--afb-fill-text);
  clip-path: inset(calc((100% - var(--circle)) / 2) var(--gap) calc((100% - var(--circle)) / 2) calc(100% - var(--gap) - var(--circle)) round 999px);
  transition: clip-path 0.45s var(--fill-ease);
}

.afb__icon {
  position: absolute;
  right: var(--gap);
  top: 50%;
  z-index: 3;
  width: var(--circle);
  height: var(--circle);
  transform: translateY(-50%);
  border-radius: 999px;
  color: var(--afb-fill-text);
  overflow: hidden;
}

.afb__icon svg {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 1.1rem;
  height: 1.1rem;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 0.45s var(--fill-ease);
}

.afb__icon svg:first-child { transform: translate(-170%, -50%) scale(0); }
.afb__icon svg:last-child { transform: translate(-50%, -50%); }

.afb:hover .afb__fill,
.afb:focus-visible .afb__fill { inset: 0; }
.afb:hover .afb__ghost,
.afb:focus-visible .afb__ghost { clip-path: inset(0 0 0 0 round 999px); }
.afb:hover .afb__icon svg:first-child,
.afb:focus-visible .afb__icon svg:first-child { transform: translate(-50%, -50%) scale(1); }
.afb:hover .afb__icon svg:last-child,
.afb:focus-visible .afb__icon svg:last-child { transform: translate(70%, -50%) scale(0); }

.afb:active { transform: translateY(1px); }

@media (prefers-reduced-motion: reduce) {
  .afb__fill, .afb__ghost, .afb__icon svg { transition: none; }
}

/* ------------------------------------------------------------
   Hero
   ------------------------------------------------------------ */

.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--white);
}

.hero__aurora,
.hero__aurora::after {
  --bands: repeating-linear-gradient(100deg, var(--white) 0%, var(--white) 7%, transparent 10%, transparent 12%, var(--white) 16%);
  --aurora: repeating-linear-gradient(100deg, #1a1a1a 10%, #9a9a9a 15%, #3c3c3c 20%, #e2e2e2 25%, #2a2a2a 30%);
  background-image: var(--bands), var(--aurora);
  background-size: 300% 200%;
  background-position: 50% 50%;
}

.hero__aurora {
  position: absolute;
  inset: -10px;
  pointer-events: none;
  opacity: 0.45;
  filter: blur(14px) invert(1);
  mask-image: radial-gradient(ellipse at 100% 0%, #000 10%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 100% 0%, #000 10%, transparent 70%);
  will-change: transform;
}

.hero__aurora::after {
  content: "";
  position: absolute;
  inset: 0;
  background-size: 200% 100%;
  background-attachment: fixed;
  mix-blend-mode: difference;
  animation: aurora 60s linear infinite;
}

@keyframes aurora {
  from { background-position: 50% 50%, 50% 50%; }
  to { background-position: 350% 50%, 350% 50%; }
}

@media (prefers-reduced-motion: reduce) {
  .hero__aurora::after { animation: none; }
}

.hero__nav {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
  padding-block: 1.75rem;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  font-size: 1.125rem;
  letter-spacing: -0.03em;
  text-decoration: none;
  line-height: 1;
}

.brand b { font-weight: 800; }
.brand span { font-weight: 300; color: var(--slate); }

.navlinks { display: flex; gap: 1.75rem; }

@media (max-width: 480px) { .navlinks { gap: 1rem; } .navlinks a { letter-spacing: 0.08em; } }

.navlinks a,
.mininav a,
.footer__nav a {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--slate);
  padding-block: 0.3rem;
  border-bottom: 2px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.navlinks a:hover,
.mininav a:hover,
.mininav a.is-active,
.footer__nav a:hover { color: var(--ink); border-bottom-color: var(--ink); }

.hero__body {
  position: relative;
  z-index: 2;
  flex: 1;
  display: grid;
  align-content: center;
  padding-block: clamp(2rem, 6vw, 4rem) clamp(4rem, 10vw, 7rem);
}

.hero__title { max-width: 14ch; }

.hero__title em { font-style: normal; font-weight: 300; color: var(--slate); display: block; font-size: 0.5em; letter-spacing: -0.02em; margin-top: 0.35em; }

.hero__cta { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2.25rem; }

.platform { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; margin-top: 2.25rem; }

.platform a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--slate);
  transition: color 0.25s var(--ease);
}

.platform a:hover { color: var(--ink); }

.platform svg { width: 16px; height: 16px; fill: currentColor; flex: 0 0 16px; }


.hero__aside { display: none; }

@media (min-width: 992px) {
  .hero__body { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); align-items: end; gap: 3rem; }
  .hero__aside { display: block; justify-self: end; }
}

.hero__card {
  width: min(22rem, 100%);
  margin: 0;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  backdrop-filter: blur(8px);
  box-shadow: 0 30px 60px -40px rgba(0, 0, 0, 0.35);
}

.hero__card dt { font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--grey); margin-top: 1rem; }
.hero__card dt:first-child { margin-top: 0; }
.hero__card dd { margin: 0.2rem 0 0; font-weight: 600; }

/* ------------------------------------------------------------
   Floating mini nav
   ------------------------------------------------------------ */

.mininav {
  position: fixed;
  top: 1rem;
  left: 50%;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.6rem 1.25rem;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--line);
  border-radius: 999px;
  backdrop-filter: blur(10px);
  box-shadow: 0 20px 40px -30px rgba(0, 0, 0, 0.4);
  transform: translate(-50%, -140%);
  opacity: 0;
  transition: transform 0.5s var(--ease), opacity 0.5s var(--ease);
}

.mininav.is-visible { transform: translate(-50%, 0); opacity: 1; }

.mininav a { border-bottom: 0; }

.mininav .brand { font-size: 0.9375rem; }

@media (max-width: 640px) {
  .mininav { gap: 0.9rem; padding: 0.5rem 0.9rem; }
  .mininav .brand span { display: none; }
}

/* ------------------------------------------------------------
   Marquee
   ------------------------------------------------------------ */

.marquee {
  overflow: hidden;
  border-block: 1px solid var(--line);
  background: var(--paper);
  padding-block: 1rem;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.marquee__track { display: flex; width: max-content; animation: marquee 38s linear infinite; }

.marquee__track ul { display: flex; gap: 2.5rem; padding-right: 2.5rem; }

.marquee li {
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 2.5rem;
}

.marquee li::after { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--grey); }

@keyframes marquee { to { transform: translateX(-50%); } }

@media (prefers-reduced-motion: reduce) { .marquee__track { animation: none; flex-wrap: wrap; width: auto; } }

/* ------------------------------------------------------------
   Sections
   ------------------------------------------------------------ */

.section { padding-block: var(--section); }

.section--paper { background: var(--paper); }

.section__head { margin-bottom: clamp(2.5rem, 5vw, 4rem); }

.section__head .lead { margin-top: 1.25rem; }

.split { display: grid; grid-template-columns: minmax(0, 1fr); gap: 2.5rem; align-items: center; }

@media (min-width: 900px) { .split { grid-template-columns: 5fr 7fr; gap: 5rem; } }

/* Placeholder media: locked aspect, holds the layout until assets land */

figure {
  position: relative;
  margin: 0;
  background: var(--mist);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  color: var(--grey);
  font-size: 0.8125rem;
}

figure img { width: 100%; height: 100%; object-fit: cover; }

figure.is-portrait { aspect-ratio: 4 / 5; max-width: 26rem; }

figcaption { padding: 0.6rem 0; font-size: 0.8125rem; color: var(--slate); }

/* About */

.about__facts { display: grid; gap: 0; margin-top: 2rem; }

.about__facts li { display: grid; grid-template-columns: 8.5rem 1fr; gap: 1rem; padding-block: 0.85rem; border-top: 1px solid var(--line); font-size: 0.9375rem; }

.about__facts li span:first-child { font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--grey); padding-top: 0.2rem; }

/* Work: zig-zag */

.work { display: grid; grid-template-columns: minmax(0, 1fr); gap: 2rem; align-items: center; padding-block: clamp(2.5rem, 5vw, 4rem); border-top: 1px solid var(--line); }

.work:first-of-type { border-top: 0; padding-top: 0; }

.work figure { transition: transform 0.6s var(--ease); }

.work:hover figure { transform: scale(1.015); }

.work figure.is-contain { background: #0a0a0a; }

.work figure.is-contain img { object-fit: contain; padding: 1.5rem; }


.work__meta { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--slate); margin: 0.9rem 0 1.1rem; }

.work__copy .lead { margin-bottom: 1.25rem; }

.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1.75rem; }

.tags li { font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.1em; text-transform: uppercase; padding: 0.3rem 0.65rem; border: 1px solid var(--line); border-radius: 999px; color: var(--slate); }

@media (min-width: 900px) {
  .work { grid-template-columns: 5fr 7fr; gap: 4rem; }
  .work--flip { grid-template-columns: 7fr 5fr; }
  .work--flip .work__copy { order: 2; }
  .work figure img { clip-path: polygon(0 0, 100% 0, 100% 100%, 10% 100%); }
  .work--flip figure img { clip-path: polygon(0 0, 90% 0, 100% 100%, 0 100%); }
}

/* Timeline */

.timeline { display: grid; gap: 0; border-top: 1px solid var(--line); }

.timeline li { display: grid; grid-template-columns: minmax(0, 1fr); gap: 0.35rem 2rem; padding-block: 1.5rem; border-bottom: 1px solid var(--line); }

@media (min-width: 700px) { .timeline li { grid-template-columns: 11rem 1fr auto; align-items: baseline; } }

.timeline__when { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--grey); }
.timeline__what { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; }
.timeline__where { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--slate); }

/* Education */

.edu { display: grid; gap: 1rem; }

@media (min-width: 720px) { .edu { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

.edu li { padding: 1.75rem; background: var(--white); border: 1px solid var(--line); }

.edu__when { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--grey); margin-bottom: 0.5rem; }
.edu h3 { font-size: 1.375rem; margin-bottom: 0.35rem; }
.edu p { color: var(--slate); margin: 0; font-weight: 300; }

/* Contact block */

.contact { background: var(--black); color: var(--white); }

.contact .lead { color: #bdbdbd; }
.contact .lead strong { color: var(--white); }

.contact .afb { --afb-bg: var(--white); --afb-text: var(--ink); --afb-fill: var(--ink); --afb-fill-text: var(--white); border-color: var(--white); }

.contact__grid { display: grid; gap: 3rem; }

@media (min-width: 900px) { .contact__grid { grid-template-columns: 7fr 5fr; align-items: end; } }

.contact__links { display: grid; gap: 0; border-top: 1px solid #2c2c2c; }

.contact__links a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding-block: 1.1rem;
  border-bottom: 1px solid #2c2c2c;
  text-decoration: none;
  font-weight: 600;
  transition: padding-left 0.35s var(--ease), color 0.35s var(--ease);
}

.contact__links a:hover { padding-left: 0.5rem; color: #d6d6d6; }

.contact__links span:last-child { font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--grey); }

.contact :focus-visible { outline-color: var(--white); }

/* Footer */

.footer { padding-block: 2.5rem; border-top: 1px solid var(--line); }

.footer .container { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem 2rem; }

.footer__nav { display: flex; flex-wrap: wrap; gap: 1.5rem; }

/* ------------------------------------------------------------
   Case study pages
   ------------------------------------------------------------ */

.case-hero { position: relative; overflow: hidden; min-height: auto; }

.case-hero .hero__body { display: block; padding-block: clamp(3rem, 8vw, 6rem) clamp(2.5rem, 6vw, 4rem); }

.case-hero h1 { font-size: clamp(2.25rem, 1.4rem + 4vw, 4.75rem); max-width: 18ch; }

.case-hero .tags { margin-top: 1.5rem; margin-bottom: 0; }

.case-section { padding-block: clamp(3rem, 7vw, 5.5rem); border-top: 1px solid var(--line); }

.case-section .split { align-items: start; }

.case-section h2 { font-size: clamp(1.5rem, 1.2rem + 1.4vw, 2.25rem); }

.case-section figure { margin-top: 1.5rem; aspect-ratio: auto; }

.case-section figure img { aspect-ratio: auto; height: auto; object-fit: contain; }

.case-section figcaption { padding: 0.6rem 0.9rem; border-top: 1px solid var(--line); background: var(--white); }

.case-list { list-style: disc; padding-left: 1.25rem; margin-bottom: 1rem; }

.case-list li { margin-bottom: 0.5rem; }

.case-facts { margin-top: 1.5rem; }

.case-facts li { grid-template-columns: 10rem 1fr; }

.case-nav { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem 2rem; padding-block: clamp(2.5rem, 6vw, 4rem); border-top: 1px solid var(--line); }