@import url('https://fonts.googleapis.com/css2?family=Source+Sans+3:wght@400;500;600&family=Source+Serif+4:opsz,wght@8..60,400;8..60,500&display=swap');

/* =========================================
   VARIABLES
========================================= */

:root {
  --background: #f2f0ea;
  --surface: #f7f6f2;
  --text: #171717;
  --muted: #706e68;
  --line: #cbc8bf;
  --accent: #147b7c;

  --serif: "Source Serif 4", Georgia, serif;
  --sans: "Source Sans 3", Arial, sans-serif;

  --content-width: 1450px;
  --page-gutter: 5rem;
  --mobile-gutter: 2rem;

  --number-column: 65px;
  --number-gap: 1.25rem;
}


/* =========================================
   BASE
========================================= */

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.5;
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

img {
  display: block;
  width: 100%;
}


/* =========================================
   SHARED PAGE WIDTHS
========================================= */

.site-header,
.home-hero,
.home-section,
.site-footer,
.interior-hero,
.interior-section,
.project-hero,
.project-detail-section,
.project-media-item,
.learning-intro-section,
.about-main,
.about-contact {
  width: min(
    calc(100% - var(--page-gutter)),
    var(--content-width)
  );

  margin-left: auto;
  margin-right: auto;
}


/* =========================================
   HEADER
========================================= */

.site-header {
  padding: 1.4rem 0;

  display: flex;
  align-items: center;
  justify-content: space-between;

  gap: 2rem;

  border-bottom: 1px solid var(--line);
}

.site-name {
  font-family: var(--sans);
  font-size: .95rem;
  font-weight: 600;
  text-decoration: none;
}

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

.site-nav a {
  font-family: var(--sans);
  font-size: .85rem;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus {
  color: var(--accent);
}


/* =========================================
   SMALL LABELS
========================================= */

.eyebrow,
.section-label,
.work-type {
  margin: 0;

  font-family: var(--sans);
  font-size: .68rem;
  font-weight: 600;

  letter-spacing: .15em;

  color: var(--muted);
}


/* =========================================
   HOME HERO
========================================= */

.home-hero {
  margin-top: 2.5rem;

  min-height: 550px;

  display: grid;
  grid-template-columns:
    minmax(0, .95fr)
    minmax(0, 1.35fr);

  background: var(--surface);
}

.hero-copy {
  padding: clamp(2.5rem, 5vw, 5rem);

  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-copy h1 {
  margin: 1.2rem 0 1.75rem;

  font-size: clamp(3.15rem, 5.2vw, 5.6rem);
  font-weight: 400;
  line-height: .98;
  letter-spacing: -.035em;
}

.hero-intro {
  max-width: 560px;

  margin: 0;

  font-size: clamp(1.05rem, 1.5vw, 1.4rem);
  line-height: 1.4;
}

.hero-image {
  min-height: 550px;
  overflow: hidden;
}

.hero-image img {
  height: 100%;
  object-fit: cover;
  object-position: center;
}


/* =========================================
   HOME SECTIONS
========================================= */

.home-section {
  padding: clamp(3.5rem, 6vw, 5.75rem) 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns:
    var(--number-column)
    minmax(0, 1fr);

  gap: var(--number-gap);

  align-items: baseline;

  margin-bottom: 2.5rem;
}

.section-heading h2 {
  margin: 0;

  font-size: clamp(2rem, 3.3vw, 3.6rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -.025em;
}

.section-heading.stacked-heading {
  display: block;
}

.section-heading.stacked-heading .section-label {
  margin-bottom: .7rem;
}


/* =========================================
   HOME BOOKS
========================================= */

.book-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.5rem, 3vw, 3rem);
}

.book-card img {
  aspect-ratio: 3 / 4;
  object-fit: contain;
  background: rgba(255, 255, 255, .3);
}

.book-info {
  padding-top: 1.25rem;
}

.book-info h3 {
  margin: .4rem 0 .2rem;

  font-size: clamp(1.45rem, 2.1vw, 2.1rem);
  font-weight: 400;
}

.book-info p:last-child {
  margin: 0;

  font-family: var(--sans);
  font-size: .9rem;

  color: var(--muted);
}


/* =========================================
   HOME FEATURE ROWS
========================================= */

.feature-row {
  display: grid;
  grid-template-columns:
    minmax(220px, .8fr)
    minmax(0, 2fr);

  gap: clamp(3rem, 6vw, 7rem);
}

.feature-row .section-heading {
  display: block;
  margin: 0;
}

.feature-row .section-label {
  margin-bottom: .7rem;
}

.feature-content {
  max-width: 900px;
}

.feature-copy h3 {
  margin: .45rem 0 1.25rem;

  font-size: clamp(2.25rem, 3.7vw, 3.9rem);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -.025em;
}

.feature-copy > p:not(.work-type),
.large-copy {
  max-width: 800px;

  font-size: clamp(1.15rem, 1.75vw, 1.55rem);
  line-height: 1.4;
}

.feature-copy a,
.section-link,
.about-teaser a {
  font-family: var(--sans);
  font-size: .85rem;
  text-decoration: none;
  color: var(--accent);
}

.feature-copy a:hover,
.feature-copy a:focus,
.section-link:hover,
.section-link:focus,
.about-teaser a:hover,
.about-teaser a:focus {
  text-decoration: underline;
  text-underline-offset: .25em;
}


/* =========================================
   HOME COLLAGE PREVIEW
========================================= */

.collage-preview {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));

  gap: .5rem;

  margin-bottom: 1.75rem;
}

.collage-preview img {
  aspect-ratio: 1 / 1;
  object-fit: cover;
}


/* =========================================
   HOME ABOUT TEASER
========================================= */

.about-teaser {
  display: grid;
  grid-template-columns:
    minmax(220px, .8fr)
    minmax(0, 2fr);

  gap: clamp(3rem, 6vw, 7rem);
}

.about-teaser .section-heading {
  display: block;
  margin: 0;
}

.about-teaser-copy {
  max-width: 850px;
}


/* =========================================
   FOOTER
========================================= */

.site-footer {
  padding: 1.75rem 0 3rem;

  border-top: 1px solid var(--line);

  display: flex;
  justify-content: space-between;

  gap: 2rem;

  font-family: var(--sans);
  font-size: .75rem;

  color: var(--muted);
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  text-decoration: none;
}


/* =========================================
   INTERIOR HERO
========================================= */

.interior-hero {
  padding:
    clamp(4rem, 7vw, 7rem)
    0
    clamp(3.5rem, 6vw, 6rem);
}

.interior-hero h1 {
  margin: .75rem 0 1.25rem;

  font-size: clamp(3rem, 5vw, 5.2rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -.035em;
}

.interior-intro {
  max-width: 650px;

  margin: 0;

  font-size: clamp(1.15rem, 1.8vw, 1.5rem);
  line-height: 1.4;
}


/* =========================================
   INTERIOR SECTIONS
========================================= */

.interior-section {
  padding: clamp(3.5rem, 6vw, 5.75rem) 0;
  border-top: 1px solid var(--line);
}


/* =========================================
   BOOKS & WRITING
========================================= */

.book-list {
  max-width: 1100px;
  margin-left: auto;
}

.book-row {
  display: grid;
  grid-template-columns:
    minmax(180px, 300px)
    minmax(0, 1fr);

  gap: clamp(2.5rem, 6vw, 6rem);

  align-items: center;

  padding: 3rem 0;

  border-top: 1px solid var(--line);
}

.book-row:last-child {
  border-bottom: 1px solid var(--line);
}

.book-row-image img {
  width: 100%;
  max-height: 420px;
  object-fit: contain;
}

.book-row-copy {
  max-width: 650px;
}

.book-row-copy h3 {
  margin: .4rem 0 .3rem;

  font-size: clamp(2rem, 3vw, 3.2rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -.025em;
}

.book-publisher {
  margin: 0 0 1.5rem;

  font-family: var(--sans);
  font-size: .9rem;

  color: var(--muted);
}

.book-description {
  max-width: 620px;

  margin: 0 0 1.5rem;

  font-size: clamp(1rem, 1.35vw, 1.2rem);
  line-height: 1.55;
}

.text-link {
  font-family: var(--sans);
  font-size: .85rem;
  color: var(--accent);
  text-decoration: none;
}

.text-link:hover,
.text-link:focus {
  text-decoration: underline;
  text-underline-offset: .25em;
}


/* =========================================
   PUBLICATION LIST
========================================= */

.publication-list {
  max-width: 1100px;

  margin-left: auto;

  border-top: 1px solid var(--line);
}

.publication-item {
  display: grid;
  grid-template-columns:
    minmax(0, 1.7fr)
    minmax(150px, .8fr)
    30px;

  gap: 2rem;

  align-items: center;

  padding: 1.4rem 0;

  border-bottom: 1px solid var(--line);

  text-decoration: none;
}

.publication-title {
  font-size: clamp(1.2rem, 1.8vw, 1.55rem);
}

.publication-journal {
  font-family: var(--sans);
  font-size: .85rem;
  color: var(--muted);
}

.publication-arrow {
  font-family: var(--sans);
  color: var(--accent);
  text-align: right;
}

.publication-item:hover .publication-title,
.publication-item:focus .publication-title {
  color: var(--accent);
}


/* =========================================
   COLLAGE PAGE
========================================= */

.collage-gallery {
  width: 100%;

  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));

  gap: 12px;
}

.collage-gallery-item {
  display: block;
  width: 100%;
  overflow: hidden;
  text-decoration: none;
}

.collage-gallery-item img {
  display: block;

  width: 100%;
  height: auto;

  aspect-ratio: 1 / 1;

  object-fit: cover;

  transition:
    transform 300ms ease,
    opacity 300ms ease;
}

.collage-gallery-item:hover img,
.collage-gallery-item:focus img {
  transform: scale(1.02);
  opacity: .86;
}


/* =========================================
   PROJECT INDEX
========================================= */

.project-feature {
  display: grid;
  grid-template-columns:
    var(--number-column)
    minmax(0, 1fr);

  gap: var(--number-gap);

  max-width: 1200px;
}

.project-number {
  padding-top: .35rem;

  font-family: var(--sans);
  font-size: .7rem;
  font-weight: 600;

  letter-spacing: .15em;

  color: var(--muted);
}

.project-feature-copy {
  max-width: 900px;
}

.project-feature-copy h2 {
  margin: .45rem 0 1.25rem;

  font-size: clamp(2.7rem, 4.3vw, 4.6rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -.03em;
}

.project-summary {
  max-width: 750px;

  margin: 0 0 2rem;

  font-size: clamp(1.2rem, 1.8vw, 1.6rem);
  line-height: 1.4;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
}


/* =========================================
   PROJECT VIDEO WORK
========================================= */

.project-media-item {
  padding: clamp(3.5rem, 6vw, 6rem) 0;
  border-top: 1px solid var(--line);
}

.project-media-heading {
  display: grid;
  grid-template-columns:
    var(--number-column)
    minmax(0, 1fr);

  gap: var(--number-gap);

  align-items: start;

  margin-bottom: 2rem;
}

.project-media-heading h2 {
  margin: .4rem 0 0;

  font-size: clamp(2.2rem, 3.8vw, 4rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -.025em;
}

/*
  Align the video with the project title rather than the page edge.
  This keeps 01, 02, and 03 on the same visual grid.
*/
.video-embed {
  position: relative;

  width: min(
    calc(100% - var(--number-column) - var(--number-gap)),
    900px
  );

  margin-left: calc(
    var(--number-column) + var(--number-gap)
  );

  aspect-ratio: 16 / 9;

  overflow: hidden;

  background: #111;
}

.video-embed iframe {
  position: absolute;
  inset: 0;

  width: 100%;
  height: 100%;

  border: 0;
}


/* =========================================
   PROJECT DETAIL
========================================= */

.project-hero {
  padding: clamp(4rem, 8vw, 8rem) 0;
}

.project-hero h1 {
  max-width: 1100px;

  margin: .8rem 0 1.75rem;

  font-size: clamp(3.8rem, 7vw, 7rem);
  font-weight: 400;
  line-height: .91;
  letter-spacing: -.04em;
}

.project-deck {
  max-width: 720px;

  margin: 0 0 2.5rem;

  font-size: clamp(1.25rem, 2vw, 1.7rem);
  line-height: 1.4;
}

.project-launch {
  display: inline-block;

  padding: .9rem 1.2rem;

  border: 1px solid var(--text);

  font-family: var(--sans);
  font-size: .85rem;

  text-decoration: none;

  transition:
    background 200ms ease,
    color 200ms ease;
}

.project-launch:hover,
.project-launch:focus {
  background: var(--text);
  color: var(--background);
}

.project-detail-section {
  padding: clamp(3.5rem, 6vw, 6rem) 0;

  border-top: 1px solid var(--line);

  display: grid;
  grid-template-columns:
    minmax(220px, .7fr)
    minmax(0, 2fr);

  gap: clamp(3rem, 7vw, 8rem);
}

.project-detail-label h2 {
  margin: .65rem 0 0;

  font-size: clamp(1.8rem, 2.8vw, 2.8rem);
  font-weight: 400;
  line-height: 1.05;
}

.project-detail-copy {
  max-width: 800px;
}

.project-detail-copy > p {
  margin: 0 0 1.5rem;

  font-size: clamp(1.05rem, 1.4vw, 1.2rem);
  line-height: 1.65;
}

.project-detail-copy .large-copy {
  font-size: clamp(1.3rem, 2vw, 1.7rem);
  line-height: 1.45;
}

.project-aside {
  margin-top: 2.5rem !important;

  padding-left: 1.5rem;

  border-left: 2px solid var(--accent);
}

.project-note {
  margin-top: 2.5rem !important;

  font-family: var(--sans);
  font-size: .8rem !important;

  color: var(--muted);
}

.secondary-launch {
  margin-top: .5rem;
}


/* =========================================
   LEARNING DESIGN INTRO
========================================= */

.learning-intro-section {
  padding: clamp(3.5rem, 6vw, 6rem) 0;

  border-top: 1px solid var(--line);

  display: grid;
  grid-template-columns:
    minmax(180px, .6fr)
    minmax(0, 2fr);

  gap: clamp(3rem, 7vw, 8rem);
}

.learning-intro-copy {
  max-width: 900px;
}

.learning-intro-copy > p {
  max-width: 760px;

  margin: 0 0 1.4rem;

  font-size: clamp(1.05rem, 1.35vw, 1.2rem);
  line-height: 1.6;
}

.learning-intro-copy .learning-lead {
  max-width: 850px;

  margin-bottom: 2rem;

  font-size: clamp(1.55rem, 2.6vw, 2.4rem);
  line-height: 1.25;
  letter-spacing: -.02em;
}


/* =========================================
   LEARNING DESIGN STRENGTHS
========================================= */

.strength-grid {
  margin-top: 3rem;

  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));

  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.strength-item {
  padding: 1.75rem;

  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.strength-item h3 {
  margin: 0 0 .75rem;

  font-size: clamp(1.25rem, 1.8vw, 1.7rem);
  font-weight: 400;
  line-height: 1.15;
}

.strength-item p {
  max-width: 360px;

  margin: 0;

  font-family: var(--sans);
  font-size: .85rem;
  line-height: 1.55;

  color: var(--muted);
}


/* =========================================
   SELECTED LEARNING DESIGN WORK
========================================= */

.learning-work-list {
  max-width: 1100px;

  margin-left: auto;

  border-top: 1px solid var(--line);
}

.learning-work-item {
  display: grid;
  grid-template-columns:
    70px
    minmax(0, 1fr);

  gap: clamp(1.5rem, 4vw, 4rem);

  padding: 2.25rem 0;

  border-bottom: 1px solid var(--line);
}

.learning-work-number {
  padding-top: .3rem;

  font-family: var(--sans);
  font-size: .68rem;
  font-weight: 600;

  letter-spacing: .14em;

  color: var(--muted);
}

.learning-work-copy {
  max-width: 780px;
}

.learning-work-copy h3 {
  margin: .4rem 0 .9rem;

  font-size: clamp(1.8rem, 2.7vw, 2.8rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -.025em;
}

.learning-work-copy > p:not(.work-type):not(.learning-meta) {
  max-width: 700px;

  margin: 0;

  font-size: clamp(1rem, 1.25vw, 1.15rem);
  line-height: 1.55;
}

.learning-meta {
  margin: 1rem 0 0 !important;

  font-family: var(--sans);
  font-size: .76rem !important;
  line-height: 1.4 !important;

  color: var(--muted);

  letter-spacing: .025em;
}


/* =========================================
   ABOUT
========================================= */

.about-main {
  padding: clamp(3.5rem, 6vw, 6rem) 0;

  border-top: 1px solid var(--line);

  display: grid;
  grid-template-columns:
    minmax(0, 1fr)
    minmax(320px, .9fr);

  gap: clamp(3rem, 7vw, 8rem);

  align-items: start;
}

.about-copy {
  max-width: 700px;
}

.about-copy p {
  margin: 0 0 1.5rem;

  font-size: clamp(1.05rem, 1.3vw, 1.18rem);
  line-height: 1.65;
}

.about-copy .about-lead {
  margin-bottom: 2rem;

  font-size: clamp(1.5rem, 2.4vw, 2.2rem);
  line-height: 1.3;
  letter-spacing: -.02em;
}

.about-image img {
  width: 100%;
  max-height: 720px;

  object-fit: cover;
  object-position: center;
}


/* =========================================
   CONTACT
========================================= */

.about-contact {
  padding: clamp(3.5rem, 6vw, 6rem) 0;

  border-top: 1px solid var(--line);

  display: grid;
  grid-template-columns:
    minmax(180px, .6fr)
    minmax(0, 2fr);

  gap: clamp(3rem, 7vw, 8rem);
}

.about-contact-copy {
  max-width: 700px;
}

.about-contact-copy h2 {
  margin: 0 0 1.25rem;

  font-size: clamp(2rem, 3.2vw, 3.5rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -.025em;
}

.about-contact-copy p {
  max-width: 520px;

  margin: 0 0 1.5rem;

  font-size: 1.05rem;
  line-height: 1.55;
}

.contact-email {
  font-family: var(--sans);
  font-size: clamp(1rem, 1.4vw, 1.2rem);

  color: var(--accent);

  text-decoration: none;
}

.contact-email:hover,
.contact-email:focus {
  text-decoration: underline;
  text-underline-offset: .25em;
}


/* =========================================
   TABLET / MOBILE
========================================= */

@media (max-width: 800px) {

  :root {
    --page-gutter: var(--mobile-gutter);
    --number-column: 40px;
    --number-gap: 1rem;
  }

  .site-header {
    align-items: flex-start;
    gap: 1rem;
  }

  .site-nav {
    justify-content: flex-end;
    gap: .6rem 1rem;
  }

  .home-hero {
    grid-template-columns: 1fr;

    min-height: 0;

    margin-top: 1.5rem;
  }

  .hero-image {
    min-height: 390px;
  }

  .hero-copy {
    padding: 3rem 2rem;
  }

  .hero-copy h1 {
    font-size: clamp(3rem, 13vw, 4.6rem);
  }

  .hero-intro {
    font-size: 1.1rem;
  }

  .book-grid {
    grid-template-columns: 1fr;
  }

  .feature-row,
  .about-teaser,
  .learning-intro-section,
  .project-detail-section,
  .about-main,
  .about-contact {
    grid-template-columns: 1fr;
  }

  .feature-row,
  .about-teaser,
  .learning-intro-section {
    gap: 1.5rem;
  }

  .project-detail-section,
  .about-main,
  .about-contact {
    gap: 2rem;
  }

  .collage-preview,
  .collage-gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .section-heading {
    margin-bottom: 2rem;
  }

  .section-heading h2 {
    font-size: clamp(2rem, 10vw, 3rem);
  }

  .feature-copy h3 {
    font-size: clamp(2rem, 9vw, 3rem);
  }

  .feature-copy > p:not(.work-type),
  .large-copy {
    font-size: 1.1rem;
  }

  .interior-hero {
    padding: 3.5rem 0;
  }

  .interior-hero h1 {
    font-size: clamp(2.8rem, 13vw, 4.2rem);
  }

  .book-list,
  .publication-list,
  .learning-work-list {
    margin-left: 0;
  }

  .book-row {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .book-row-image img {
    max-width: 320px;
  }

  .publication-item {
    grid-template-columns:
      minmax(0, 1fr)
      25px;

    gap: .5rem 1rem;
  }

  .publication-journal {
    grid-column: 1;
    grid-row: 2;
  }

  .publication-arrow {
    grid-column: 2;
    grid-row: 1 / span 2;
  }

  .project-feature {
    grid-template-columns:
      var(--number-column)
      minmax(0, 1fr);

    gap: var(--number-gap);
  }

  .project-hero h1 {
    font-size: clamp(3.3rem, 15vw, 5.5rem);
  }

  .video-embed {
    width: calc(
      100% - var(--number-column) - var(--number-gap)
    );

    margin-left: calc(
      var(--number-column) + var(--number-gap)
    );
  }

  .strength-grid {
    grid-template-columns: 1fr;
  }

  .learning-work-item {
    grid-template-columns:
      var(--number-column)
      minmax(0, 1fr);
  }

  .about-image {
    max-width: 600px;
  }
}


/* =========================================
   SMALL PHONE
========================================= */

@media (max-width: 520px) {

  .collage-gallery {
    grid-template-columns: 1fr;
  }

  .project-media-heading,
  .project-feature,
  .learning-work-item {
    grid-template-columns: 1fr;
    gap: .75rem;
  }

  .video-embed {
    width: 100%;
    margin-left: 0;
  }
}