/* Hallmark · genre: editorial · macrostructure: Ecosystem Index · theme: studied-DNA (source: https://citygrainla.com/course) · enrichment: generated street-photography contact sheet · nav: N9 · footer: Ft1 · contrast: pass (40–41) · slop: pass (42–45) · honest: pass (46) · chrome: pass (47) · tokens: pass (48) · mobile: pass (34, 49–57)
 * paper: oklch(92% 0.025 83) · accent: oklch(55% 0.19 31) · display: Space Grotesk · body: Georgia · studied: yes
 * Hallmark · pre-emit critique: P5 H5 E4 S5 R5 V5
 */
@import url("/tokens.css");

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

html,
body {
  overflow-x: clip;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-ink);
  background: var(--color-paper);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
}

body::before {
  position: fixed;
  z-index: var(--z-raised);
  inset: 0;
  opacity: 0.05;
  background-image:
    radial-gradient(circle, var(--color-ink) 0 var(--rule-hairline), transparent var(--rule-heavy));
  background-size: var(--space-xs) var(--space-xs);
  content: "";
  pointer-events: none;
  mix-blend-mode: multiply;
}

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

a {
  color: inherit;
  text-underline-offset: 0.22em;
  text-decoration-thickness: var(--rule-hairline);
}

a:active {
  opacity: 0.75;
}

button,
input {
  font: inherit;
}

button:disabled,
input:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

:focus-visible {
  outline: 3px solid var(--color-blue);
  outline-offset: var(--space-2xs);
}

.skip-link {
  position: fixed;
  z-index: var(--z-modal);
  top: var(--space-xs);
  left: 50%;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-ink);
  background: var(--color-acid);
  font-family: var(--font-label);
  transform: translate(-50%, -160%);
}

.skip-link:focus {
  transform: translate(-50%, 0);
}

.site-shell {
  width: min(100%, 1600px);
  margin-inline: auto;
  padding-inline: clamp(var(--space-md), 3vw, var(--space-xl));
}

.site-header {
  position: relative;
  z-index: var(--z-sticky);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  min-height: 92px;
  border-bottom: var(--rule-heavy) solid var(--color-ink);
}

.wordmark {
  width: fit-content;
  font-family: var(--font-display);
  font-size: clamp(var(--text-lg), 3vw, var(--text-2xl));
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(var(--space-md), 2.5vw, var(--space-xl));
  font-family: var(--font-label);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav a {
  position: relative;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: var(--space-xs);
  left: 0;
  height: var(--rule-heavy);
  background: var(--color-red);
  content: "";
  opacity: 0;
  transform: scaleX(0);
  transform-origin: left;
  transition: opacity var(--dur-micro) var(--ease-out), transform var(--dur-micro) var(--ease-out);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a[aria-current="page"]::after {
  opacity: 1;
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  min-width: 48px;
  min-height: 44px;
  border: var(--rule-heavy) solid var(--color-ink);
  color: var(--color-ink);
  background: transparent;
  font-family: var(--font-label);
  font-size: var(--text-xs);
  text-transform: uppercase;
  cursor: pointer;
}

.nav-toggle:hover {
  color: var(--color-accent-ink);
  background: var(--color-ink);
}

.nav-toggle:active {
  transform: translateY(1px);
}

.eyebrow,
.meta,
.frame-label {
  font-family: var(--font-label);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0 0 var(--space-lg);
  color: var(--color-red-dark);
}

h1,
h2,
h3 {
  min-width: 0;
  margin: 0;
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 750;
  letter-spacing: -0.045em;
  line-height: 1.03;
  overflow-wrap: anywhere;
}

h1 {
  font-size: var(--text-display);
}

h2 {
  font-size: clamp(var(--text-2xl), 5vw, var(--text-4xl));
}

h3 {
  font-size: var(--text-xl);
}

p {
  max-width: 68ch;
}

.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  gap: clamp(var(--space-xl), 5vw, var(--space-3xl));
  align-items: end;
  padding-block: var(--space-2xl) var(--space-3xl);
}

.home-hero__copy {
  padding-bottom: var(--space-lg);
}

.home-hero__copy h1 {
  max-width: 8ch;
}

.lede {
  margin: var(--space-xl) 0 0;
  font-size: clamp(var(--text-md), 2vw, var(--text-lg));
  line-height: 1.4;
}

.film-frame {
  position: relative;
  margin: 0;
  padding: var(--space-lg) var(--space-sm) var(--space-xl);
  color: var(--color-paper);
  background: var(--color-dark-paper);
}

.film-frame::before,
.film-frame::after {
  position: absolute;
  bottom: var(--space-xs);
  font-family: var(--font-label);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  content: attr(data-film);
}

.film-frame::before {
  left: var(--space-sm);
}

.film-frame::after {
  right: var(--space-sm);
  content: attr(data-frame);
}

.film-frame img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: contrast(1.08) saturate(0.8);
}

.home-hero .film-frame {
  transform: rotate(-1.2deg);
}

.index-band {
  display: flex;
  justify-content: space-between;
  gap: var(--space-lg);
  padding-block: var(--space-md);
  border-block: var(--rule-hairline) solid var(--color-ink);
  font-family: var(--font-label);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.index-band span:last-child {
  color: var(--color-red-dark);
}

.section {
  padding-block: var(--space-3xl);
}

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

.section--dark {
  margin-inline: calc(clamp(var(--space-md), 3vw, var(--space-xl)) * -1);
  padding-inline: clamp(var(--space-md), 3vw, var(--space-xl));
  color: var(--color-dark-ink);
  background: var(--color-dark-paper);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  gap: var(--space-2xl);
  align-items: end;
  margin-bottom: var(--space-2xl);
}

.section-heading p {
  margin: 0;
  font-size: var(--text-md);
}

.rail-link,
.text-link {
  font-family: var(--font-label);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}

.feature-rail {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.85fr) minmax(0, 0.85fr);
  gap: var(--space-lg);
}

.feature-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: var(--space-md);
  color: inherit;
  text-decoration: none;
}

.feature-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.06);
}

.feature-card:first-child img {
  aspect-ratio: 16 / 10;
}

.feature-card h3 {
  font-size: clamp(var(--text-lg), 2.5vw, var(--text-2xl));
}

.feature-card p {
  margin: 0;
}

.feature-card .meta {
  color: var(--color-red-dark);
}

.feature-card img {
  transition: filter var(--dur-short) var(--ease-out);
}

.feature-card:hover img,
.feature-card:focus-visible img {
  filter: saturate(1) contrast(1.04);
}

.notes-list {
  border-top: var(--rule-heavy) solid var(--color-ink);
}

.note-row {
  display: grid;
  grid-template-columns: minmax(120px, 0.6fr) minmax(0, 2fr) minmax(0, 1fr);
  gap: var(--space-lg);
  align-items: baseline;
  padding-block: var(--space-lg);
  border-bottom: var(--rule-hairline) solid var(--color-rule);
  color: inherit;
  text-decoration: none;
}

.note-row h3 {
  font-size: clamp(var(--text-md), 2.3vw, var(--text-xl));
}

.note-row p {
  margin: 0;
}

.course-callout {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
  gap: var(--space-2xl);
  align-items: center;
}

.course-callout h2 {
  max-width: 10ch;
}

.course-callout__copy {
  display: grid;
  gap: var(--space-lg);
}

.course-callout__copy p {
  margin: 0;
  font-size: var(--text-md);
}

.button {
  display: inline-flex;
  width: fit-content;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  border: var(--rule-heavy) solid var(--color-red);
  color: var(--color-red-dark);
  background: transparent;
  font-family: var(--font-label);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transition: color var(--dur-micro) var(--ease-out), background-color var(--dur-micro) var(--ease-out), transform var(--dur-micro) var(--ease-out);
}

.button:hover,
.button:focus-visible {
  color: var(--color-paper-light);
  background: var(--color-red);
  transform: translateY(-1px);
}

.section--dark .button,
.course-panel .button {
  color: var(--color-accent-ink);
}

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

.button[aria-disabled="true"],
.button.is-disabled {
  cursor: not-allowed;
  opacity: 0.55;
  pointer-events: none;
}

.page-hero {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(280px, 1fr);
  gap: var(--space-2xl);
  align-items: end;
  min-height: 52vh;
  padding-block: var(--space-2xl) var(--space-3xl);
}

.page-hero h1 {
  max-width: 12ch;
}

.page-hero__aside {
  border-top: var(--rule-heavy) solid var(--color-ink);
  padding-top: var(--space-md);
}

.page-hero__aside p {
  margin: 0;
}

.archive-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-lg);
}

.archive-item {
  grid-column: span 4;
  margin: 0;
}

.archive-item:nth-child(1),
.archive-item:nth-child(6) {
  grid-column: span 7;
}

.archive-item:nth-child(2),
.archive-item:nth-child(5) {
  grid-column: span 5;
}

.archive-item img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.archive-item figcaption {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  padding-top: var(--space-sm);
  border-top: var(--rule-hairline) solid var(--color-ink);
  font-family: var(--font-label);
  font-size: var(--text-xs);
  text-transform: uppercase;
}

.course-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(320px, 0.65fr);
  gap: var(--space-2xl);
  padding-block: var(--space-2xl) var(--space-3xl);
}

.course-hero h1 {
  max-width: 9ch;
}

.course-hero .lede {
  max-width: 52ch;
}

.course-panel {
  align-self: end;
  padding: var(--space-xl);
  color: var(--color-dark-ink);
  background: var(--color-dark-paper);
}

.course-panel h2 {
  font-size: var(--text-2xl);
}

.course-panel ul {
  display: grid;
  gap: var(--space-sm);
  padding: 0;
  list-style: none;
  font-family: var(--font-label);
  font-size: var(--text-xs);
  text-transform: uppercase;
}

.course-panel li {
  padding-bottom: var(--space-sm);
  border-bottom: var(--rule-hairline) solid var(--color-dark-ink);
}

.modules {
  border-top: var(--rule-heavy) solid var(--color-ink);
}

.module {
  display: grid;
  grid-template-columns: minmax(150px, 0.65fr) minmax(0, 1fr) minmax(0, 1.25fr);
  gap: var(--space-lg);
  padding-block: var(--space-xl);
  border-bottom: var(--rule-hairline) solid var(--color-rule);
}

.module h3 {
  font-size: var(--text-lg);
}

.module p {
  margin: 0;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(260px, 0.85fr);
  gap: var(--space-3xl);
}

.prose {
  font-size: var(--text-md);
}

.prose p:first-child::first-letter {
  float: left;
  margin: 0.12em 0.12em 0 0;
  color: var(--color-red-dark);
  font-family: var(--font-display);
  font-size: 4.4em;
  font-weight: 700;
  line-height: 0.72;
}

.prose h2 {
  margin-top: var(--space-2xl);
  font-size: var(--text-2xl);
}

.colophon {
  align-self: start;
  padding-top: var(--space-md);
  border-top: var(--rule-heavy) solid var(--color-ink);
  font-family: var(--font-label);
  font-size: var(--text-xs);
  text-transform: uppercase;
}

.colophon dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-sm) var(--space-lg);
}

.colophon dd {
  margin: 0;
}

.site-footer {
  padding-block: var(--space-2xl) var(--space-lg);
  border-top: var(--rule-heavy) solid var(--color-ink);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) repeat(2, minmax(150px, 0.6fr));
  gap: var(--space-2xl);
}

.footer-mark {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 5vw, var(--text-4xl));
  font-weight: 750;
  letter-spacing: -0.04em;
  line-height: 1;
}

.footer-links {
  display: grid;
  align-content: start;
  gap: var(--space-xs);
  font-family: var(--font-label);
  font-size: var(--text-xs);
  text-transform: uppercase;
}

.footer-links a {
  width: fit-content;
  min-height: 32px;
  white-space: nowrap;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
  padding-top: var(--space-md);
  border-top: var(--rule-hairline) solid var(--color-rule);
  font-family: var(--font-label);
  font-size: var(--text-xs);
  text-transform: uppercase;
}

.not-found {
  display: grid;
  min-height: 70vh;
  align-content: center;
  justify-items: start;
  gap: var(--space-lg);
}

.not-found strong {
  color: var(--color-red);
  font-family: var(--font-display);
  font-size: clamp(7rem, 25vw, 18rem);
  line-height: 0.7;
}

@media (max-width: 900px) {
  .home-hero,
  .course-hero,
  .course-callout,
  .about-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .home-hero {
    align-items: start;
  }

  .feature-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-card:first-child {
    grid-column: 1 / -1;
  }

  .page-hero {
    min-height: auto;
  }

  .archive-item,
  .archive-item:nth-child(1),
  .archive-item:nth-child(2),
  .archive-item:nth-child(5),
  .archive-item:nth-child(6) {
    grid-column: span 6;
  }
}

@media (max-width: 768px) {
  .site-header {
    min-height: 76px;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .site-nav {
    position: absolute;
    z-index: var(--z-dropdown);
    top: calc(100% + var(--space-2xs));
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    padding: var(--space-sm);
    border: var(--rule-heavy) solid var(--color-ink);
    background: var(--color-paper-light);
    opacity: 0;
    pointer-events: none;
    transform: translateY(calc(var(--space-xs) * -1));
    transition: opacity var(--dur-short) var(--ease-out), transform var(--dur-short) var(--ease-out);
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }

  .site-nav a {
    padding-inline: var(--space-md);
    border-bottom: var(--rule-hairline) solid var(--color-rule);
  }

  .section-heading,
  .page-hero {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-lg);
  }

  .note-row {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-xs);
  }

  .module {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-sm);
  }

  .footer-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .footer-mark {
    grid-column: 1 / -1;
  }
}

@media (max-width: 520px) {
  .site-shell {
    padding-inline: var(--space-md);
  }

  .home-hero {
    gap: var(--space-xl);
    padding-top: var(--space-xl);
  }

  .home-hero__copy h1 {
    max-width: 10ch;
  }

  .feature-rail {
    grid-template-columns: minmax(0, 1fr);
  }

  .feature-card:first-child {
    grid-column: auto;
  }

  .section {
    padding-block: var(--space-2xl);
  }

  .section--dark {
    margin-inline: calc(var(--space-md) * -1);
    padding-inline: var(--space-md);
  }

  .archive-item,
  .archive-item:nth-child(1),
  .archive-item:nth-child(2),
  .archive-item:nth-child(5),
  .archive-item:nth-child(6) {
    grid-column: 1 / -1;
  }

  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-lg);
  }

  .footer-mark {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 150ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 150ms !important;
  }
}