/* Studio Elwick visual system.
   Stuart: update brand colours, font stacks, spacing and pattern assets in this :root block. */
:root {
  --old-paper: #f4ecd9;
  --paper: #fff9ec;
  --paper-deep: #e9ddc7;
  --archive: #d8c5a0;
  --oxblood: #7f302a;
  --rust: #9b4a32;
  --olive: #59653e;
  --olive-dark: #343b28;
  --ultramarine: #3157c8;
  --plaster-pink: #d99b91;
  --ink: #29221f;
  --brown: #4a372c;
  --muted: #75685c;
  --rule: #cdbb99;
  --rule-dark: #8a765e;
  --focus: var(--ultramarine);
  --shadow: 0 20px 50px rgba(43, 36, 31, 0.13);
  --section-space: clamp(3.5rem, 7vw, 7rem);
  --gutter: clamp(1rem, 5vw, 4rem);
  --border-fine: 1px solid var(--rule);
  --pattern-opacity: 0.12;
  --pattern-opacity-strong: 0.2;
  --pattern-rule-height: 18px;
  --pattern-border: url("/assets/img/patterns/studio-elwick-horizontal-border-oxblood.png");
  --pattern-border-olive: url("/assets/img/patterns/studio-elwick-horizontal-border-olive.png");
  --pattern-border-faint: url("/assets/img/patterns/studio-elwick-horizontal-border-faint.png");
  --pattern-vertical: url("/assets/img/patterns/vertical-floral-stripe.svg");
  --pattern-geometric: url("/assets/img/patterns/architectural-geometric-repeat.svg");
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", serif;
  --sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

/* Preserve native hidden behaviour when a component also defines display. */
[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--old-paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.72;
}

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

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

p {
  margin: 0 0 1rem;
}

h1,
h2,
h3,
h4 {
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.06;
  margin: 0;
}

h1 {
  font-size: clamp(3rem, 8vw, 6.8rem);
}

h2 {
  font-size: clamp(2rem, 4.3vw, 4.1rem);
}

h3 {
  font-size: clamp(1.35rem, 2.4vw, 2.1rem);
}

h4 {
  font-size: 1.08rem;
}

.skip-link {
  background: var(--ink);
  color: var(--paper);
  left: 1rem;
  padding: 0.7rem 1rem;
  position: fixed;
  top: -4rem;
  z-index: 50;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  align-items: center;
  background: rgba(243, 234, 216, 0.96);
  border-bottom: 1px solid rgba(138, 118, 94, 0.38);
  display: grid;
  gap: 1rem;
  grid-template-columns: auto 1fr auto;
  left: 0;
  padding: 0.85rem clamp(1rem, 4vw, 3.4rem);
  position: sticky;
  right: 0;
  top: 0;
  z-index: 20;
}

.brand {
  align-items: center;
  display: inline-flex;
  gap: 0.72rem;
  text-decoration: none;
}

.brand-mark {
  align-items: center;
  border: 1px solid var(--olive);
  color: var(--olive-dark);
  display: inline-flex;
  font-family: var(--serif);
  font-size: 0.86rem;
  height: 2.5rem;
  justify-content: center;
  line-height: 1;
  width: 2.5rem;
}

.brand-name {
  font-family: var(--serif);
  font-size: 1.42rem;
  line-height: 1;
}

.site-nav {
  align-items: center;
  display: flex;
  gap: clamp(0.8rem, 2vw, 1.5rem);
  justify-content: end;
}

.site-nav a,
.instagram-link {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 760;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav a[aria-current="page"],
.site-nav a:hover,
.instagram-link:hover {
  color: var(--ultramarine);
}

.instagram-link {
  border-left: 1px solid var(--rule);
  padding-left: 1rem;
}

.menu-toggle {
  align-items: center;
  background: transparent;
  border: 1px solid var(--rule-dark);
  color: var(--ink);
  cursor: pointer;
  display: none;
  height: 2.55rem;
  justify-content: center;
  padding: 0;
  position: relative;
  width: 2.55rem;
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  background: currentColor;
  content: "";
  display: block;
  height: 2px;
  position: absolute;
  width: 1.15rem;
}

.menu-toggle::before {
  transform: translateY(-6px);
}

.menu-toggle::after {
  transform: translateY(6px);
}

.container {
  margin: 0 auto;
  max-width: 1180px;
}

.narrow {
  max-width: 760px;
}

.section {
  padding: var(--section-space) var(--gutter);
}

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

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

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

.section.ink h2,
.section.ink h3,
.section.ink p,
.section.ink .eyebrow,
.section.ink .section-kicker {
  color: var(--paper);
}

.eyebrow,
.section-kicker,
.article-meta,
.meta,
.archive-label {
  color: var(--oxblood);
  display: block;
  font-size: 0.72rem;
  font-weight: 820;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.archive-label {
  color: var(--muted);
}

.hero-editorial {
  border-bottom: 1px solid var(--rule);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  min-height: min(82vh, 820px);
}

.hero-copy-panel {
  align-content: end;
  display: grid;
  padding: clamp(4rem, 9vw, 8rem) clamp(1rem, 6vw, 5rem) clamp(3rem, 7vw, 5rem);
}

.hero-copy-panel h1 {
  font-size: clamp(3.3rem, 5.8vw, 6.2rem);
  letter-spacing: -0.05em;
  margin-bottom: 1.1rem;
}

.hero-copy-panel h1 em {
  color: var(--oxblood);
  font-weight: inherit;
}

.hero-statement {
  font-family: var(--serif);
  font-size: clamp(1.45rem, 3vw, 2.55rem);
  line-height: 1.18;
  max-width: 850px;
}

.hero-support {
  color: var(--muted);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  max-width: 660px;
}

.hero-media {
  background: var(--ink);
  display: grid;
  min-height: 34rem;
  overflow: hidden;
  position: relative;
}

.hero-media img {
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
  width: 100%;
}

.pattern-hero-media {
  background: var(--paper);
  min-height: 30rem;
}

.pattern-hero-media img {
  align-self: center;
  height: auto;
  justify-self: center;
  max-width: none;
  object-fit: contain;
  opacity: 0.95;
  padding: clamp(1rem, 4vw, 3rem);
  width: min(1100px, 115%);
}

.hero-media .archive-caption {
  background: rgba(251, 245, 232, 0.92);
  border: 1px solid var(--rule-dark);
  bottom: 1.2rem;
  color: var(--brown);
  font-size: 0.78rem;
  font-weight: 700;
  left: 1.2rem;
  padding: 0.55rem 0.68rem;
  position: absolute;
  right: 1.2rem;
  text-transform: uppercase;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.6rem;
}

.notes-coming-soon {
  align-self: center;
  border-left: 1px solid var(--rule-dark);
  padding-left: clamp(1.25rem, 3vw, 2.5rem);
}

.notes-coming-soon p {
  color: var(--brown);
  max-width: 34rem;
}

.button {
  align-items: center;
  border: 1px solid var(--ink);
  display: inline-flex;
  font-size: 0.82rem;
  font-weight: 820;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.7rem 1rem;
  text-decoration: none;
  text-transform: uppercase;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.button.primary {
  background: var(--oxblood);
  border-color: var(--oxblood);
  color: var(--paper);
}

.button.secondary {
  background: var(--paper);
  color: var(--ink);
}

.button.ghost {
  background: transparent;
  color: var(--ink);
}

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

.button.primary:hover {
  background: var(--ultramarine);
  border-color: var(--ultramarine);
}

.button.secondary:hover,
.button.ghost:hover {
  border-color: var(--ultramarine);
  color: var(--ultramarine);
}

.section-head {
  align-items: end;
  border-bottom: 1px solid var(--rule);
  display: grid;
  gap: 1.4rem;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.52fr);
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
}

.section-head p {
  color: var(--muted);
  max-width: 620px;
}

.intro-grid,
.two-column,
.newsletter,
.work-grid,
.pattern-intro,
.article-layout {
  display: grid;
  gap: clamp(2rem, 5vw, 4.5rem);
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.82fr);
}

.intro-copy {
  font-family: var(--serif);
  font-size: clamp(1.55rem, 3vw, 2.55rem);
  line-height: 1.2;
}

.formula-grid {
  counter-reset: formula;
  display: grid;
  gap: 0.8rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 2rem;
}

.formula-step {
  background: var(--paper);
  border: 1px solid var(--rule);
  min-height: 12rem;
  padding: 1rem;
  position: relative;
}

.formula-step::before {
  color: var(--oxblood);
  content: counter(formula, decimal-leading-zero);
  counter-increment: formula;
  display: block;
  font-family: var(--serif);
  font-size: 1.8rem;
  line-height: 1;
  margin-bottom: 1.5rem;
}

.formula-step h3 {
  font-size: 1.35rem;
  margin-bottom: 0.6rem;
}

.formula-step p {
  color: var(--muted);
  font-size: 0.95rem;
}

.image-frame {
  background: var(--paper);
  border: 1px solid var(--rule-dark);
  box-shadow: var(--shadow);
  padding: 0.45rem;
}

.image-frame img {
  aspect-ratio: 4 / 3;
  height: 100%;
  object-fit: cover;
  width: 100%;
}

/* Pattern usage:
   Emma's actual horizontal border PNG is the primary site motif.
   Swap it by changing --pattern-border / --pattern-border-olive / --pattern-border-faint above.
   Adjust --pattern-opacity values to make trims quieter or stronger.
   Pattern Studies can use the vertical stripe and geometric repeat more visibly. */
.pattern-rule,
.pattern-footer-strip {
  background-image: var(--pattern-border);
  background-position: center;
  background-repeat: repeat-x;
  background-size: auto 100%;
  height: var(--pattern-rule-height);
  opacity: var(--pattern-opacity-strong);
}

.pattern-rule {
  background-color: var(--old-paper);
  border-bottom: var(--border-fine);
}

.pattern-footer-strip {
  background-image: var(--pattern-border-olive);
}

.article-ending-divider {
  padding: 2rem var(--gutter) 0;
}

.pattern-divider {
  align-items: center;
  color: var(--oxblood);
  display: flex;
  gap: 0.8rem;
  margin: 1.5rem 0;
}

.pattern-divider::before,
.pattern-divider::after {
  background-image: var(--pattern-border);
  background-position: center;
  background-repeat: repeat-x;
  background-size: auto 100%;
  content: "";
  flex: 1;
  height: 14px;
  opacity: var(--pattern-opacity-strong);
}

.study-grid,
.post-grid,
.related-grid,
.pattern-grid {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.study-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.study-card,
.post-card,
.link-card,
.notice-card {
  background: var(--paper);
  border: 1px solid var(--rule);
  box-shadow: 0 1px 0 rgba(43, 36, 31, 0.06);
}

.study-card {
  display: flex;
  flex-direction: column;
  min-height: 18rem;
  padding: 1rem;
  position: relative;
  text-decoration: none;
}

.study-card::before {
  background: var(--oxblood);
  content: "";
  height: 3px;
  left: 1rem;
  position: absolute;
  right: 1rem;
  top: 1rem;
}

/* One clear colour interruption keeps the six-part index from feeling like a
   conventional oxblood-and-olive heritage system. */
.study-card:nth-child(5)::before {
  background: var(--ultramarine);
}

.study-card .number {
  color: var(--muted);
  display: block;
  font-family: var(--serif);
  font-size: 2.1rem;
  margin: 2rem 0 auto;
}

.study-card p,
.post-card p,
.link-card p,
.notice-card p {
  color: var(--muted);
}

.post-card {
  display: grid;
  grid-template-rows: auto 1fr;
}

.post-card[hidden] {
  display: none;
}

.post-card img {
  aspect-ratio: 4 / 3;
  border-bottom: 1px solid var(--rule);
  object-fit: cover;
  padding: 0.35rem;
  width: 100%;
}

.post-card-body {
  display: flex;
  flex-direction: column;
  padding: 1.05rem;
}

.post-card h3 {
  font-size: 1.55rem;
  margin-bottom: 0.6rem;
}

.read-link {
  color: var(--ultramarine);
  font-size: 0.78rem;
  font-weight: 850;
  margin-top: auto;
  text-decoration: none;
  text-transform: uppercase;
}

.read-link:hover {
  text-decoration: underline;
}

.pattern-panel {
  background: var(--olive-dark);
  color: var(--paper);
  overflow: hidden;
  position: relative;
}

.pattern-panel::before {
  background-image: var(--pattern-border-faint);
  background-position: center top;
  background-repeat: repeat-x;
  background-size: auto 42px;
  content: "";
  inset: 0;
  opacity: 1;
  pointer-events: none;
  position: absolute;
}

.pattern-panel::after {
  border: 1px solid rgba(251, 245, 232, 0.22);
  content: "";
  inset: 1.2rem;
  pointer-events: none;
  position: absolute;
}

.pattern-panel > * {
  position: relative;
  z-index: 1;
}

.pattern-panel h2,
.pattern-panel p,
.pattern-panel .section-kicker {
  color: var(--paper);
}

.pattern-studies-hero {
  overflow: hidden;
  position: relative;
}

.pattern-studies-hero::before {
  background-image: var(--pattern-vertical);
  background-position: left top;
  background-repeat: repeat-y;
  background-size: 116px auto;
  bottom: 0;
  content: "";
  left: 0;
  opacity: var(--pattern-opacity);
  pointer-events: none;
  position: absolute;
  top: 0;
  width: min(18vw, 170px);
}

.pattern-studies-hero::after {
  background-image: var(--pattern-geometric);
  background-position: right top;
  background-repeat: repeat;
  background-size: 110px 110px;
  bottom: 0;
  content: "";
  opacity: 0.07;
  pointer-events: none;
  position: absolute;
  right: 0;
  top: 0;
  width: min(24vw, 260px);
}

.pattern-studies-hero > * {
  position: relative;
  z-index: 1;
}

.pattern-list {
  display: grid;
  gap: 0.7rem;
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.pattern-list li,
.feature-list li,
.credits-list li {
  border-top: 1px solid rgba(138, 118, 94, 0.5);
  padding-top: 0.7rem;
}

.newsletter {
  align-items: center;
}

.newsletter h2 {
  max-width: 760px;
}

.newsletter-form,
.contact-form {
  display: grid;
  gap: 0.75rem;
}

label {
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
}

input,
textarea,
select {
  background: var(--paper);
  border: 1px solid var(--rule-dark);
  color: var(--ink);
  font: inherit;
  min-height: 3rem;
  padding: 0.78rem 0.9rem;
  width: 100%;
}

textarea {
  min-height: 9rem;
  resize: vertical;
}

.form-row {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 1fr 1fr;
}

.form-note,
.prototype-message {
  color: var(--muted);
  font-size: 0.88rem;
  margin: 0;
}

.prototype-message {
  color: var(--olive-dark);
  font-weight: 760;
  min-height: 1.5rem;
}

.page-hero,
.article-hero {
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  padding: clamp(3.2rem, 7vw, 6rem) clamp(1rem, 5vw, 4rem);
}

.page-hero .container {
  align-items: end;
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.44fr);
}

.page-hero p,
.article-subtitle {
  color: var(--muted);
  font-size: clamp(1.05rem, 1.8vw, 1.28rem);
  max-width: 760px;
}

.article-hero .container {
  max-width: 980px;
}

.article-title {
  margin: 0.35rem 0 1rem;
}

.article-image {
  margin: 2rem auto 0;
  max-width: 1180px;
}

.article-image img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
  width: 100%;
}

.article-image figcaption,
.caption {
  color: var(--muted);
  font-size: 0.78rem;
  margin-top: 0.5rem;
  text-transform: uppercase;
}

.article-layout {
  grid-template-columns: minmax(0, 1fr) 295px;
}

.article-body {
  font-size: 1.06rem;
}

.article-body h2 {
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  margin: 2.25rem 0 0.75rem;
}

.pull-quote {
  border-left: 5px solid var(--oxblood);
  color: var(--oxblood);
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.18;
  margin: 2rem 0;
  padding-left: 1.2rem;
}

.notice-card {
  margin: 2rem 0;
  padding: 1.2rem;
}

.notice-card h2 {
  font-size: clamp(1.35rem, 2.2vw, 1.9rem);
  margin-top: 0;
}

.notice-card ul,
.aside-box ul,
.feature-list,
.credits-list,
.start-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
}

.notice-card li + li,
.aside-box li + li,
.start-list a + a {
  border-top: 1px solid var(--rule);
  margin-top: 0.65rem;
  padding-top: 0.65rem;
}

.article-aside {
  align-self: start;
  display: grid;
  gap: 1rem;
  position: sticky;
  top: 5.8rem;
}

.aside-box,
.credits-box {
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 1rem;
}

.aside-box h3,
.credits-box h3 {
  font-size: 1.25rem;
  margin-bottom: 0.6rem;
}

.aside-box a,
.start-list a {
  color: var(--ultramarine);
  font-weight: 820;
  text-decoration: none;
}

.affiliate-note {
  color: var(--muted);
  font-size: 0.85rem;
}

.image-block {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr 1fr;
  margin: 2rem 0;
}

.image-block img {
  aspect-ratio: 1 / 1;
  border: 1px solid var(--rule);
  object-fit: cover;
  padding: 0.35rem;
  width: 100%;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 1.4rem 0 2rem;
}

.filter-status {
  color: var(--muted);
  font-size: 0.82rem;
  margin: -1rem 0 1.5rem;
}

#source-led-edits {
  scroll-margin-top: 6rem;
}

.filter-button {
  background: var(--paper);
  border: 1px solid var(--rule-dark);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: 0.76rem;
  font-weight: 820;
  min-height: 2.35rem;
  padding: 0.45rem 0.72rem;
  text-transform: uppercase;
}

.filter-button[aria-pressed="true"] {
  background: var(--ultramarine);
  border-color: var(--ultramarine);
  color: var(--paper);
}

.site-footer {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(2.5rem, 6vw, 5rem) clamp(1rem, 5vw, 4rem) 2rem;
}

.site-footer .pattern-footer-strip {
  margin: -1.8rem 0 2rem;
}

.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1.15fr 0.85fr 1fr;
}

.site-footer h2,
.site-footer h3,
.site-footer p,
.site-footer a,
.site-footer label {
  color: var(--paper);
}

.footer-links {
  display: grid;
  gap: 0.45rem;
}

.footer-links a {
  color: rgba(251, 245, 232, 0.76);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--paper);
}

.copyright {
  border-top: 1px solid rgba(251, 245, 232, 0.22);
  color: rgba(251, 245, 232, 0.72);
  font-size: 0.82rem;
  margin-top: 2.5rem;
  padding-top: 1.1rem;
}

@media (max-width: 1100px) {
  .study-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .hero-editorial,
  .intro-grid,
  .two-column,
  .newsletter,
  .work-grid,
  .pattern-intro,
  .article-layout,
  .page-hero .container,
  .footer-grid,
  .section-head {
    grid-template-columns: 1fr;
  }

  .post-grid,
  .related-grid,
  .pattern-grid,
  .formula-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-media {
    min-height: 25rem;
  }

  .article-aside {
    position: static;
  }

  .notes-coming-soon {
    border-left: 0;
    border-top: 1px solid var(--rule-dark);
    padding-left: 0;
    padding-top: 1.5rem;
  }
}

@media (max-width: 760px) {
  .site-header {
    grid-template-columns: auto auto;
  }

  .js .menu-toggle {
    display: inline-flex;
    justify-self: end;
  }

  .instagram-link {
    border-left: 0;
    padding-left: 0;
  }

  .site-nav {
    background: var(--old-paper);
    border-bottom: 1px solid var(--rule);
    flex-direction: column;
    grid-column: 1 / -1;
    justify-self: stretch;
    padding: 0.8rem 0 0.2rem;
  }

  .site-nav a {
    min-height: 44px;
    padding: 0.65rem 0;
  }

  .js .site-nav {
    display: none;
  }

  .js .site-header[data-open="true"] .site-nav {
    display: flex;
  }

  .hero-copy-panel {
    padding-top: 3.2rem;
  }

  .study-grid,
  .post-grid,
  .related-grid,
  .pattern-grid,
  .formula-grid,
  .form-row,
  .image-block {
    grid-template-columns: 1fr;
  }

  .study-card {
    min-height: auto;
  }

  .study-card .number {
    margin-bottom: 1rem;
  }
}

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

  .button {
    transition: none;
  }
}