/* ==========================================================================
   Components: buttons, ornaments, frames, reveals, gallery, steps, form,
   lightbox, preview and the intro
   ========================================================================== */

/* ---------- Buttons ---------- */

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.7em;
  min-height: 3.25rem;
  padding: 0 1.75rem;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-caps);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  text-decoration: none;
  transition: background-color var(--duration) ease, color var(--duration) ease, border-color var(--duration) ease;
}

.btn--primary {
  background: var(--color-parchment);
  color: var(--color-ink);
}

.btn--primary:hover {
  background: var(--color-text-bright);
  color: var(--color-ink);
}

.btn--ghost {
  border-color: var(--color-line-strong);
  background: transparent;
  color: var(--color-text);
}

.btn--ghost:hover {
  border-color: var(--color-copper);
  color: var(--color-text-bright);
}

.btn--small {
  min-height: 2.25rem;
  padding: 0 1rem;
  font-size: 0.625rem;
}

.btn[disabled] {
  opacity: 0.6;
  cursor: progress;
}

/* ---------- Ornaments ---------- */

.flourish {
  width: min(100%, 37.5rem);
  height: auto;
  fill: none;
  stroke: var(--color-copper);
  stroke-width: 1.2;
  stroke-linecap: round;
  overflow: visible;
}

#flourish-rule .fill {
  fill: var(--color-copper);
  stroke: none;
}

/* ---------- Copy blocks ---------- */

.lead {
  max-width: 34ch;
  font-size: var(--fs-lead);
  line-height: 1.25;
  color: var(--color-text-bright);
  text-indent: 2.5em;
}

/* Words light up one by one as the lead scrolls through (js/motion.js). */
.lead .w {
  opacity: 0.25;
  transition: opacity 400ms ease;
}

.lead .w.is-lit {
  opacity: 1;
}

.prose > * + * {
  margin-top: var(--space-md);
}

.prose p {
  color: var(--color-text);
}

/* ---------- Framed images (copper double rule, like the banner) ---------- */

.frame {
  position: relative;
}

.frame__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  background: var(--color-surface);
}

.frame__media::after {
  content: "";
  position: absolute;
  inset: 0.6rem;
  border: 1px solid rgb(217 142 63 / 0.55);
  outline: 1px solid rgb(217 142 63 / 0.25);
  outline-offset: 4px;
  pointer-events: none;
}

.frame__media img {
  width: 100%;
  height: 115%;
  object-fit: cover;
  filter: sepia(0.25) saturate(0.7) contrast(1.05);
  will-change: transform;
}

.frame figcaption {
  margin-top: var(--space-sm);
  color: var(--color-text-muted);
}

/* ---------- Reveal on scroll (js/motion.js adds .is-in) ---------- */

.js [data-reveal]:not([data-reveal="heading"]) {
  opacity: 0;
  transform: translateY(2.5rem);
  transition: opacity 1100ms var(--ease-out), transform 1100ms var(--ease-out);
}

.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* Headings rise line by line out of a mask. */
.line {
  display: block;
  overflow: hidden;
  padding-bottom: 0.12em;
  margin-bottom: -0.12em;
}

.line__inner {
  display: block;
  transform: translateY(110%);
  transition: transform 1300ms var(--ease-out);
}

[data-reveal="heading"].is-in .line__inner {
  transform: none;
}

[data-reveal="heading"].is-in .line:nth-child(2) .line__inner { transition-delay: 120ms; }
[data-reveal="heading"].is-in .line:nth-child(3) .line__inner { transition-delay: 240ms; }

/* Letter-split words (hero and footer wordmarks). */
.ch {
  display: inline-block;
  will-change: transform, opacity;
}

/* ---------- Facts table ---------- */

.facts {
  border-top: 1px solid var(--color-line);
}

.facts__row {
  display: grid;
  grid-template-columns: minmax(8rem, 40%) 1fr;
  gap: var(--space-md);
  align-items: baseline;
  padding-block: 0.9rem;
  border-bottom: 1px solid var(--color-line);
}

.facts dt {
  color: var(--color-text-muted);
}

/* ---------- Motifs (sparkle bullets, as on the banner's sword) ---------- */

.motifs {
  display: grid;
  gap: 0.5rem 1.5rem;
  grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr));
  margin-top: var(--space-lg);
}

.motifs li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text-bright);
}

.motifs li::before {
  content: "";
  flex: none;
  width: 0.7rem;
  height: 0.7rem;
  background: var(--color-copper);
  clip-path: polygon(50% 0, 60% 40%, 100% 50%, 60% 60%, 50% 100%, 40% 60%, 0 50%, 40% 40%);
}

/* ---------- Gallery ---------- */

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.filter-btn {
  display: inline-flex;
  align-items: flex-start;
  gap: 0.35em;
  min-height: 2.5rem;
  padding: 0 1.1rem;
  align-items: center;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-pill);
  background: transparent;
  font-family: var(--font-caps);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: border-color var(--duration) ease, color var(--duration) ease;
}

.filter-btn sup {
  font-size: 0.75em;
  color: var(--color-copper);
}

.filter-btn:hover,
.filter-btn[aria-pressed="true"] {
  border-color: var(--color-copper);
  color: var(--color-text-bright);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl) var(--space-md);
}

@media (min-width: 48em) {
  .gallery {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 64em) {
  .gallery {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2xl) var(--space-lg);
  }
}

.gallery__link {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  border: 1px solid var(--color-copper-deep);
  background: var(--color-surface);
}

.gallery__link::after {
  content: "";
  position: absolute;
  inset: 0.45rem;
  border: 1px solid rgb(217 142 63 / 0.35);
  pointer-events: none;
  transition: inset var(--duration) var(--ease-out), border-color var(--duration) ease;
}

.gallery__link img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: sepia(0.25) saturate(0.65) brightness(0.85);
  transition: transform 1200ms var(--ease-out), filter 600ms ease;
}

.gallery__link:hover img,
.gallery__link:focus-visible img {
  transform: scale(1.05);
  filter: sepia(0.1) saturate(0.9) brightness(1);
}

.gallery__link:hover::after {
  inset: 0.75rem;
  border-color: rgb(217 142 63 / 0.7);
}

.gallery__figure figcaption {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0 var(--space-sm);
  margin-top: var(--space-sm);
  font-size: var(--fs-sm);
  line-height: 1.4;
  color: var(--color-text);
}

.gallery__plate {
  font-family: var(--font-caps);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--color-copper);
}

/* ---------- Bigger photo preview (js/gallery.js) ---------- */

/* Mouse: a large copy trails the cursor. */
.preview {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 80;
  width: min(32rem, 40vw, calc((100vh - 7rem) * 0.75));
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 350ms ease, visibility 0s linear 350ms;
}

.preview.is-on {
  opacity: 1;
  visibility: visible;
  transition: opacity 350ms ease;
}

.preview__media {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border: 1px solid var(--color-copper);
  outline: 1px solid var(--color-copper-deep);
  outline-offset: 5px;
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  transform: scale(0.88);
  transition: transform 550ms var(--ease-out);
}

.preview.is-on .preview__media {
  transform: none;
}

.preview__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: sepia(0.1) saturate(0.9);
}

.preview__caption {
  margin-top: 0.9rem;
  font-size: var(--fs-sm);
  font-style: italic;
  color: var(--color-text-bright);
  text-shadow: 0 1px 8px var(--color-bg-deep);
}

.preview__caption .gallery__plate {
  margin-right: 0.6em;
  font-style: normal;
}

/* ---------- Steps and policies ---------- */

/* Booking chapters: Contact, Design, Arrival */
.chapters {
  border-top: 1px solid var(--color-line);
}

.chapter {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: var(--space-sm) var(--space-md);
  padding-block: var(--space-xl);
  border-bottom: 1px solid var(--color-line);
}

.chapter > :not(.chapter__num) {
  grid-column: 2;
}

.chapter__num {
  grid-row: 1;
  padding-top: 1.1rem;
  color: var(--color-copper);
}

.chapter__title {
  grid-row: 1;
  margin-bottom: var(--space-sm);
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 2rem + 3vw, 4.5rem);
  font-weight: 400;
  line-height: 1;
}

.chapter__lead {
  color: var(--color-text-muted);
  font-style: italic;
}

.chapter__motto {
  font-style: italic;
  color: var(--color-copper-bright);
}

.motifs--stack {
  grid-template-columns: 1fr;
  gap: 0.6rem;
  margin-top: var(--space-sm);
}

.motifs--stack li {
  align-items: baseline;
  color: var(--color-text);
}

.motifs--stack li::before {
  transform: translateY(0.05rem);
}

.policies {
  margin-top: var(--space-2xl);
  padding: var(--space-lg);
  border: 1px solid var(--color-copper-deep);
  outline: 1px solid var(--color-line);
  outline-offset: 5px;
}

.policies__title {
  margin-bottom: var(--space-lg);
  font-family: var(--font-caps);
  font-size: var(--fs-xs);
  color: var(--color-copper);
}

.policy-list {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 48em) {
  .policy-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 64em) {
  .policies {
    padding: var(--space-xl);
  }

  .policy-list {
    grid-template-columns: repeat(4, 1fr);
  }
}

.policy-list h4 {
  margin: 0 0 0.4rem;
  font-size: var(--fs-md);
  font-weight: 500;
  color: var(--color-text-bright);
}

.policy-list p {
  font-size: 1rem;
  color: var(--color-text-muted);
}

.policies__note {
  max-width: none;
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-line);
  font-style: italic;
  text-align: center;
  color: var(--color-text);
}

/* ---------- Form ---------- */

.request-form {
  display: grid;
  gap: var(--space-xl);
}

.request-form fieldset {
  display: grid;
  gap: var(--space-lg);
  margin: 0;
  padding: 0;
  border: 0;
}

.request-form legend {
  margin-bottom: var(--space-lg);
  padding: 0;
  font-family: var(--font-caps);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--color-copper);
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field-row {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 40em) {
  .field-row {
    grid-template-columns: 1fr 1fr;
  }
}

.field__label {
  font-family: var(--font-caps);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text);
}

.field__optional {
  color: var(--color-text-muted);
  text-transform: none;
  letter-spacing: 0;
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.95rem;
}

.field__hint {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.field__error {
  font-size: 0.95rem;
  color: var(--color-danger);
}

.field__error:empty {
  display: none;
}

.input {
  width: 100%;
  min-height: var(--tap-min);
  padding: 0.6rem 0;
  border: 0;
  border-bottom: 1px solid var(--color-line-strong);
  border-radius: 0;
  background: transparent;
  font-size: var(--fs-md);
  color: var(--color-text-bright);
  transition: border-color var(--duration) ease;
}

.input:focus {
  outline: none;
  border-bottom-color: var(--color-copper-bright);
}

.input:focus-visible {
  box-shadow: 0 1px 0 var(--color-copper-bright);
}

.input[aria-invalid="true"] {
  border-bottom-color: var(--color-danger);
}

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

select.input {
  appearance: none;
  padding-right: 2rem;
  background-image: linear-gradient(45deg, transparent 50%, var(--color-copper) 50%), linear-gradient(135deg, var(--color-copper) 50%, transparent 50%);
  background-position: calc(100% - 12px) 55%, calc(100% - 7px) 55%;
  background-size: 5px 5px;
  background-repeat: no-repeat;
}

select.input option {
  background: var(--color-surface);
  color: var(--color-text);
}

.dropzone {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 0.35rem;
  padding: var(--space-lg);
  border: 1px dashed var(--color-line-strong);
  text-align: center;
  color: var(--color-text-muted);
  transition: border-color var(--duration) ease, background-color var(--duration) ease;
}

.dropzone strong {
  color: var(--color-text-bright);
  font-weight: 500;
}

.dropzone:hover,
.dropzone[data-dragging="true"],
.dropzone:focus-within {
  border-color: var(--color-copper);
  background: rgb(184 112 43 / 0.06);
}

.dropzone__input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.icon {
  width: 1.5rem;
  height: 1.5rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.dropzone .icon {
  color: var(--color-copper);
}

.file-list {
  display: grid;
  gap: var(--space-sm);
  margin: var(--space-sm) 0 0;
  padding: 0;
  list-style: none;
}

.file-list:empty {
  display: none;
}

.file-list li {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm);
  border: 1px solid var(--color-line);
}

.file-list img {
  width: 3rem;
  height: 3rem;
  object-fit: cover;
}

.file-list span {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.95rem;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  min-height: var(--tap-min);
  cursor: pointer;
}

.checkbox input {
  width: 1.25rem;
  height: 1.25rem;
  accent-color: var(--color-copper);
}

.form-status {
  padding: var(--space-md);
  border: 1px solid var(--color-line-strong);
}

.form-status[data-state="success"] {
  border-color: var(--color-copper);
}

.form-status[data-state="error"] {
  border-color: var(--color-danger);
  color: var(--color-danger);
}

/* ---------- Studio info ---------- */

.studio-info {
  display: grid;
  gap: var(--space-xl);
  align-content: start;
}

.info-block h3 {
  margin-bottom: var(--space-md);
  font-family: var(--font-caps);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--color-copper);
}

.info-block > * + * {
  margin-top: 0.35rem;
}

.hours {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.35rem var(--space-lg);
}

.hours dt {
  color: var(--color-text-muted);
}

.map-placeholder {
  display: grid;
  justify-items: center;
  gap: var(--space-sm);
  padding: var(--space-xl) var(--space-lg);
  border: 1px solid var(--color-copper-deep);
  outline: 1px solid var(--color-line);
  outline-offset: 4px;
  text-align: center;
  color: var(--color-text-muted);
}

.map-placeholder .icon {
  color: var(--color-copper);
}

/* Map card: a dark snapshot of the streets with a copper marker on the studio. */
.map-card {
  position: relative;
  border: 1px solid var(--color-copper-deep);
  outline: 1px solid var(--color-line);
  outline-offset: 4px;
}

.map-link {
  position: relative;
  display: grid;
  align-content: end;
  justify-items: center;
  min-height: 17rem;
  padding: var(--space-lg);
  overflow: hidden;
  text-align: center;
  text-decoration: none;
  color: var(--color-text-bright);
  background:
    linear-gradient(to top, var(--color-bg-deep) 0%, rgb(13 13 11 / 0.6) 35%, transparent 70%),
    image-set(url("../assets/img/studio-map.webp") type("image/webp"), url("../assets/img/studio-map.jpg") type("image/jpeg")) center / cover no-repeat,
    var(--color-surface);
  transition: background-size 1200ms var(--ease-out);
}

/* Older browsers without image-set() */
@supports not (background-image: image-set(url("a.webp") type("image/webp"))) {
  .map-link {
    background:
      linear-gradient(to top, var(--color-bg-deep) 0%, rgb(13 13 11 / 0.6) 35%, transparent 70%),
      url("../assets/img/studio-map.jpg") center / cover no-repeat,
      var(--color-surface);
  }
}

/* Copper marker on the studio, at the centre of the map. */
.map-link__pin {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 14px;
  margin: -7px 0 0 -7px;
  border: 2px solid var(--color-bg-deep);
  border-radius: 50%;
  background: var(--color-copper-bright);
  box-shadow: 0 0 0 0 var(--color-copper-glow);
  animation: pulse 2.4s ease-out infinite;
}

.map-link__text {
  position: relative;
  display: grid;
  gap: 0.35rem;
}

.map-link__name {
  font-size: var(--fs-md);
}

.map-link .caps {
  color: var(--color-copper-bright);
}

.map-link:hover .caps,
.map-link:focus-visible .caps {
  color: var(--color-text-bright);
}

.map-card__credit {
  position: absolute;
  top: 0.4rem;
  right: 0.6rem;
  max-width: none;
  font-size: 0.7rem;
  color: var(--color-text-muted);
}

.map-card__credit a {
  color: inherit;
}

.social-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-lg);
}

.social-link {
  color: var(--color-text);
  text-decoration: none;
}

.social-link:hover {
  color: var(--color-copper-bright);
}

/* ---------- Lightbox ---------- */

.lightbox {
  width: 100%;
  max-width: none;
  height: 100%;
  max-height: none;
  margin: 0;
  padding: var(--space-md) var(--gutter);
  border: 0;
  background: var(--color-overlay);
  color: var(--color-text);
}

.lightbox[open] {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: var(--space-md);
  animation: fade-in 400ms var(--ease-out);
}

.lightbox::backdrop {
  background: transparent;
}

.lightbox__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.lightbox__count {
  color: var(--color-text-muted);
}

/* Photo in the middle with an arrow on each side; on phones the arrows sit over the photo's edges. */
.lightbox__stage {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  justify-items: center;
  gap: var(--space-md);
  min-height: 0;
  height: 100%;
}

.lightbox__img {
  grid-column: 2;
  grid-row: 1;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  min-height: 0;
  object-fit: contain;
  border: 1px solid var(--color-copper-deep);
  box-shadow: var(--shadow-lg);
}

.lightbox__img.is-changing {
  animation: fade-in 350ms ease;
}

.lightbox__arrow {
  grid-row: 1;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 3.5rem;
  height: 3.5rem;
  border: 1px solid var(--color-copper);
  border-radius: 50%;
  background: rgb(13 13 11 / 0.65);
  color: var(--color-text-bright);
  transition: background-color var(--duration) ease, color var(--duration) ease, transform var(--duration) var(--ease-out);
}

.lightbox__arrow--prev {
  grid-column: 1;
}

.lightbox__arrow--next {
  grid-column: 3;
}

.lightbox__arrow:hover {
  background: var(--color-copper);
  color: var(--color-bg-deep);
}

.lightbox__arrow--prev:hover {
  transform: translateX(-3px);
}

.lightbox__arrow--next:hover {
  transform: translateX(3px);
}

.lightbox__arrow .icon {
  width: 1.4rem;
  height: 1.4rem;
}

@media (max-width: 47.99em) {
  .lightbox__stage {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }

  .lightbox__img,
  .lightbox__arrow--prev,
  .lightbox__arrow--next {
    grid-column: 1;
  }

  .lightbox__arrow {
    width: 2.9rem;
    height: 2.9rem;
  }

  .lightbox__arrow--prev {
    justify-self: start;
    margin-left: 0.5rem;
  }

  .lightbox__arrow--next {
    justify-self: end;
    margin-right: 0.5rem;
  }
}

.lightbox__caption {
  max-width: none;
  text-align: center;
  font-style: italic;
  color: var(--color-text-bright);
}

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: var(--tap-min);
  height: var(--tap-min);
  border: 1px solid var(--color-line-strong);
  border-radius: 50%;
  background: transparent;
  color: var(--color-text);
  transition: border-color var(--duration) ease;
}

.icon-btn:hover {
  border-color: var(--color-copper);
}

@keyframes fade-in {
  from { opacity: 0; }
}

/* ---------- Intro: parchment sheet that burns away (js/intro.js) ---------- */

.intro {
  display: none;
}

.is-intro .intro {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding-inline: var(--gutter);
  color: var(--color-ink);
}

/* Parchment: warm base, burnt-edge vignette and a soft light in the middle. */
.intro__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background:
    radial-gradient(ellipse at center, var(--color-sheen), transparent 60%),
    radial-gradient(ellipse at center, transparent 45%, var(--color-vignette) 100%),
    var(--color-parchment);
}

/* Mottled fibres. One cover-sized image (no tiling, so no seams); js/intro.js paints it again on canvas. */
.intro__bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='800' height='500'%3E%3Cfilter id='m'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.008 0.012' numOctaves='4' seed='7'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23m)'/%3E%3C/svg%3E");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  mix-blend-mode: multiply;
  opacity: 0.45;
}

/* Fine grain. */
.intro__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23g)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
  opacity: 0.35;
}

.intro__burn {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* Thin double rule around the sheet, like the banner's frame. */
.intro__frame {
  position: absolute;
  inset: clamp(0.75rem, 2.5vw, 2rem);
  width: calc(100% - 2 * clamp(0.75rem, 2.5vw, 2rem));
  height: calc(100% - 2 * clamp(0.75rem, 2.5vw, 2rem));
  fill: none;
  stroke: var(--color-copper-deep);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
  overflow: visible;
}

.intro__frame rect {
  vector-effect: non-scaling-stroke;
}

.intro__mark {
  position: relative;
  max-width: none;
  font-size: 22vw; /* js/intro.js fits it to the width once the font has loaded */
}

.intro__word {
  display: inline-block;
  font-family: var(--font-display);
  line-height: 1.1;
  white-space: nowrap;
  opacity: 0;
}

.intro__count,
.intro__caption {
  position: absolute;
  bottom: clamp(1.75rem, 4vw, 3.25rem);
  color: var(--color-ink);
}

.intro__count {
  left: clamp(1.75rem, 4vw, 3.5rem);
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
}

.intro__caption {
  right: clamp(1.75rem, 4vw, 3.5rem);
}