/* ============================================================
   PAPERBIT — components
   Consumes tokens.css semantic tokens only.
   ============================================================ */

* { box-sizing: border-box; }

img,
video { max-width: 100%; }

::selection {
  background: var(--pb-paper-300);
  color: var(--pb-fg);
}

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

a {
  transition: color 160ms ease;
}

/* ---------- shared primitives ---------- */

.pb-label {
  font-family: var(--pb-font-mono);
  font-size: var(--pb-text-2xs);
  font-weight: 600;
  letter-spacing: var(--pb-tracking-label);
  text-transform: uppercase;
  color: var(--pb-fg-muted);
}

.pb-label--signal {
  color: var(--pb-accent);
  font-family: var(--pb-font-body);
  font-size: var(--pb-text-xs);
  font-weight: 400;
  letter-spacing: 0.015em;
  text-transform: none;
}

.pb-rule-title {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: baseline;
  gap: var(--pb-space-4);
  border-top: 1px solid var(--pb-rule-strong);
  padding-top: var(--pb-space-4);
}

.pb-rule-title .pb-index {
  font-family: var(--pb-font-mono);
  font-size: var(--pb-text-2xs);
  color: var(--pb-fg-muted);
}

/* registration cross, field-manual corner mark */
.pb-cross {
  position: relative;
}
.pb-cross::before {
  content: "+";
  position: absolute;
  top: -0.7em;
  left: -1em;
  font-family: var(--pb-font-mono);
  font-size: var(--pb-text-xs);
  color: var(--pb-fg-faint);
}

/* ---------- proof band (homepage) ---------- */
/* Sits inside the exported Framer page: full width, page-cream
   ground, no hard frame — reads as one more native section. */

.pb-band {
  width: 100%;              /* framer-root is a centered flex column */
  background: var(--pb-bg);
  padding: var(--pb-space-16) var(--pb-page-pad);
}

.pb-band__inner {
  max-width: var(--pb-page-max);
  margin: 0 auto;
}

.pb-band__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--pb-space-4);
  margin-bottom: var(--pb-space-8);
}

/* section heading, styled like the shell's card kickers */
.pb-band__label {
  font-family: var(--pb-font-body);
  font-size: 1.125rem;
  font-weight: 400;
  color: var(--pb-fg-muted);
}

.pb-proof {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.pb-proof__cell {
  padding: var(--pb-space-2) var(--pb-space-6) var(--pb-space-4);
}
.pb-proof__cell:first-child { padding-left: 0; }
.pb-proof__cell + .pb-proof__cell { border-left: 1px solid var(--pb-rule); }

.pb-proof__num {
  font-family: var(--pb-font-display);
  font-size: var(--pb-text-2xl);
  line-height: var(--pb-leading-tight);
  color: var(--pb-fg);
  margin: 0 0 var(--pb-space-2);
  font-variant-numeric: lining-nums;
  white-space: nowrap;
}

.pb-proof__line {
  font-family: var(--pb-font-body);
  font-size: var(--pb-text-sm);
  line-height: var(--pb-leading-body);
  color: var(--pb-fg-muted);
  margin: 0 0 var(--pb-space-3);
}

@media (max-width: 1053px) {
  .pb-proof { grid-template-columns: 1fr 1fr; }
  .pb-proof__cell { padding-top: var(--pb-space-4); border-bottom: 1px solid var(--pb-rule); }
  .pb-proof__cell:nth-child(odd) { border-left: none; padding-left: 0; }
  .pb-proof__cell:nth-last-child(-n+2) { border-bottom: none; }
}
@media (max-width: 599px) {
  .pb-proof { grid-template-columns: 1fr; }
  .pb-proof__cell { border-left: none !important; padding-left: 0; }
  .pb-proof__cell:nth-last-child(-n+2) { border-bottom: 1px solid var(--pb-rule); }
  .pb-proof__cell:last-child { border-bottom: none; }
}

/* ---------- next-up strip (homepage) ---------- */

.pb-next {
  margin-top: var(--pb-space-8);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--pb-space-12);
}
@media (max-width: 809px) { .pb-next { grid-template-columns: 1fr; gap: var(--pb-space-8); } }

/* unboxed, like the shell's "Other Work" entries */
.pb-next__card {
  display: block;
  text-decoration: none;
  transition: transform 180ms ease;
}
.pb-next__card:hover { transform: translateY(-2px); }
.pb-next__card:hover .pb-next__title { color: var(--pb-accent); }
.pb-next__card:hover .pb-next__title::after { transform: translateX(4px); }

.pb-next__title {
  font-family: var(--pb-font-display);
  font-size: var(--pb-text-xl);
  line-height: var(--pb-leading-tight);
  color: var(--pb-fg);
  margin: var(--pb-space-2) 0 var(--pb-space-2);
  transition: color 120ms ease;
}
.pb-next__title::after {
  content: "→";
  display: inline-block;
  margin-left: 0.25em;
  transition: transform 120ms ease;
  color: var(--pb-accent);
}

.pb-next__line {
  font-family: var(--pb-font-body);
  font-size: var(--pb-text-sm);
  line-height: var(--pb-leading-body);
  color: var(--pb-fg-muted);
  margin: 0;
}

/* ---------- case-study template ---------- */

.pb-page {
  background: var(--pb-bg);
  color: var(--pb-fg-body);
  font-family: var(--pb-font-body);
  font-size: var(--pb-text-md);
  line-height: var(--pb-leading-body);
  margin: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.pb-shell {
  max-width: var(--pb-page-max);
  margin: 0 auto;
  padding: 0 var(--pb-page-pad);
}

/* top nav */
.pb-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 88px;
  padding: 20px 0;
  border-bottom: var(--pb-hairline-faint);
}
.pb-nav__mark {
  display: inline-flex;
  align-items: center;
  color: var(--pb-fg);
  text-decoration: none;
}
.pb-nav__mark img { width: 152px; height: auto; display: block; transform: rotate(1.5deg); }
.pb-nav__links { display: flex; gap: var(--pb-space-6); }
.pb-nav__links a {
  font-family: var(--pb-font-display);
  font-size: 17px;
  color: var(--pb-fg-muted);
  text-decoration: none;
  text-decoration-color: color-mix(in srgb, var(--pb-accent) 50%, transparent);
  text-underline-offset: 5px;
}
.pb-nav__links a:hover {
  color: var(--pb-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
}

/* header */
.pb-cs-header { padding: 104px 0 72px; }
.pb-cs-header .pb-label { display: block; margin-bottom: var(--pb-space-4); }

.pb-cs-title {
  font-family: var(--pb-font-display);
  font-weight: 400;
  font-size: var(--pb-text-3xl);
  line-height: 1.02;
  color: var(--pb-fg);
  margin: 0 0 var(--pb-space-6);
  max-width: 24ch;
}

.pb-cs-standfirst {
  font-size: var(--pb-text-lg);
  line-height: 1.42;
  color: var(--pb-fg-muted);
  max-width: 56ch;
  margin: 0;
}

/* spec table: role / team / timeline / stack */
.pb-spec {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  border-top: 1px solid var(--pb-rule-strong);
  border-bottom: 1px solid var(--pb-rule);
  margin: 40px 0 96px;
}
.pb-spec > div {
  padding: 18px 22px 20px;
}
.pb-spec > div:first-child { padding-left: 0; }
.pb-spec > div + div { border-left: 1px solid var(--pb-rule); }
.pb-spec dt { margin: 0 0 var(--pb-space-1); }
.pb-spec dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--pb-fg-body);
}

.pb-spec--with-media {
  margin-bottom: 44px;
}

.pb-figure--lead {
  margin-top: 0;
  margin-bottom: 0;
}

/* prose section */
.pb-section { margin: 0 0 96px; }
.pb-section__head { margin-bottom: var(--pb-space-8); }
.pb-section h2 {
  font-family: var(--pb-font-display);
  font-weight: 400;
  font-size: clamp(34px, 3.2vw, 42px);
  line-height: var(--pb-leading-tight);
  color: var(--pb-fg);
  margin: 0;
}
.pb-section p {
  max-width: var(--pb-measure);
  margin: 0 0 20px;
  font-size: var(--pb-text-md);
  line-height: var(--pb-leading-body);
}

/* ---------- annotation system: field-manual callouts ----------
   A figure with numbered pins over the image and a keyed list of
   decisions beneath. Pins mark WHERE; the key explains WHY.      */

.pb-figure { margin: 44px 0 52px; }

.pb-figure__stage {
  position: relative;
  border: 1px solid var(--pb-rule);
  border-radius: var(--pb-radius-media);
  overflow: hidden;
  background: var(--pb-bg-raised);
  box-shadow: var(--pb-shadow-media);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

@media (hover: hover) and (pointer: fine) {
  .pb-figure__stage:hover {
    border-color: color-mix(in srgb, var(--pb-accent) 32%, var(--pb-rule));
    box-shadow: 0 20px 52px rgba(51, 43, 27, 0.11);
  }
}
.pb-figure__stage img,
.pb-figure__stage video {
  display: block;
  width: 100%;
  height: auto;
}

/* placeholder stage while artwork is in progress */
.pb-figure__stage--empty {
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    repeating-linear-gradient(45deg,
      transparent 0 10px,
      color-mix(in srgb, var(--pb-ink-900) 5%, transparent) 10px 11px);
}

.pb-pin {
  position: absolute;
  transform: translate(-50%, -50%);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--pb-accent);
  color: var(--pb-paper-050);
  font-family: var(--pb-font-mono);
  font-size: var(--pb-text-2xs);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 2px var(--pb-paper-050);
}

.pb-figure__key {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--pb-rule-strong);
}
.pb-figure__key li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: var(--pb-space-3);
  padding: var(--pb-space-3) 0;
  border-bottom: var(--pb-rule-dotted);
  max-width: var(--pb-measure);
}
.pb-figure__key .pb-key-num {
  font-family: var(--pb-font-mono);
  font-size: var(--pb-text-xs);
  font-weight: 700;
  color: var(--pb-accent);
}
.pb-figure__key .pb-key-body {
  font-size: var(--pb-text-sm);
  color: var(--pb-fg-body);
}
.pb-figure__key .pb-key-body strong {
  color: var(--pb-fg);
  font-weight: 600;
}

.pb-figcaption {
  margin-top: var(--pb-space-3);
  display: flex;
  justify-content: space-between;
  gap: var(--pb-space-4);
}

.pb-figcaption__body {
  max-width: var(--pb-measure);
  color: var(--pb-fg-muted);
  font-size: var(--pb-text-sm);
  line-height: 1.55;
  text-align: right;
}

/* inline margin note */
.pb-note {
  border-left: 2px solid var(--pb-accent);
  padding: 18px 20px 18px 22px;
  margin: var(--pb-space-8) 0;
  max-width: var(--pb-measure);
  background: var(--pb-bg-recessed);
}
.pb-note .pb-label { display: block; margin-bottom: var(--pb-space-1); }
.pb-note p { margin: 0; font-size: var(--pb-text-sm); }

/* wip banner */
.pb-wip {
  display: inline-flex;
  align-items: center;
  gap: var(--pb-space-2);
  border: 1px solid var(--pb-accent);
  color: var(--pb-accent);
  font-family: var(--pb-font-mono);
  font-size: var(--pb-text-2xs);
  letter-spacing: var(--pb-tracking-label);
  text-transform: uppercase;
  padding: var(--pb-space-1) var(--pb-space-3);
  border-radius: var(--pb-radius-plate);
}

/* footer */
.pb-footer {
  border-top: 1px solid var(--pb-rule);
  margin-top: var(--pb-space-24);
  padding: var(--pb-space-8) 0 var(--pb-space-16);
  display: flex;
  justify-content: space-between;
  gap: var(--pb-space-4);
  flex-wrap: wrap;
}
.pb-footer a { color: var(--pb-fg-body); text-decoration: none; font-size: var(--pb-text-sm); }
.pb-footer a:hover { color: var(--pb-accent); }
.pb-footer nav { display: flex; gap: var(--pb-space-6); }

/* ---------- migrated case-study content patterns ---------- */

/* in-section subhead */
.pb-subhead {
  font-family: var(--pb-font-display);
  font-weight: 400;
  font-size: clamp(24px, 2vw, 28px);
  color: var(--pb-fg);
  margin: 48px 0 var(--pb-space-3);
  max-width: var(--pb-measure);
}

/* testimonial quotes */
.pb-quote-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--pb-space-4) var(--pb-space-8);
  margin: var(--pb-space-6) 0;
}
@media (max-width: 809px) { .pb-quote-grid { grid-template-columns: 1fr; } }
.pb-quote {
  border-left: 2px solid var(--pb-rule-strong);
  padding: var(--pb-space-1) 0 var(--pb-space-1) var(--pb-space-4);
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  font-style: italic;
  color: var(--pb-fg-body);
}

/* multi-image figures */
.pb-figure__media--grid2,
.pb-figure__media--grid3 {
  display: grid;
  gap: var(--pb-space-4);
}
.pb-figure__media--grid2 { grid-template-columns: 1fr 1fr; }
.pb-figure__media--grid3 { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 599px) {
  .pb-figure__media--grid2, .pb-figure__media--grid3 { grid-template-columns: 1fr; }
}

/* end-of-page cta strip */
.pb-endcta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--pb-space-4);
  flex-wrap: wrap;
  border-top: 1px solid var(--pb-rule);
  padding-top: var(--pb-space-8);
  margin-top: 96px;
}
.pb-endcta a {
  font-family: var(--pb-font-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--pb-accent);
  text-decoration: none;
  transition: color 160ms ease, transform 160ms ease;
}
.pb-endcta a:hover {
  color: var(--pb-accent-strong);
  transform: translateX(2px);
}

/* three-column footer, matching the home footer */
.pb-footer--cols {
  border-top: 1px solid var(--pb-rule);
  margin-top: 104px;
  padding: 56px 0 40px;
  display: grid;
  grid-template-columns: repeat(3, minmax(140px, 220px));
  gap: var(--pb-space-8);
}
@media (max-width: 599px) { .pb-footer--cols { grid-template-columns: 1fr; } }
.pb-footer__title {
  font-family: var(--pb-font-display);
  font-weight: 400;
  font-size: 24px;
  color: var(--pb-fg-muted);
  margin: 0 0 var(--pb-space-3);
}
.pb-footer--cols ul { list-style: none; margin: 0; padding: 0; }
.pb-footer--cols li { margin: 0 0 var(--pb-space-2); }
.pb-footer--cols a {
  font-family: var(--pb-font-body);
  font-size: var(--pb-text-sm);
  color: var(--pb-fg-body);
  text-decoration: none;
}
.pb-footer--cols a:hover { color: var(--pb-accent); }
.pb-footer__legal {
  border-top: 1px solid var(--pb-rule);
  padding: var(--pb-space-4) 0 var(--pb-space-12);
}

@media (max-width: 720px) {
  .pb-nav {
    min-height: 74px;
    gap: 12px;
    padding: 18px 0;
  }

  .pb-nav__mark img {
    width: clamp(112px, 34vw, 136px);
  }

  .pb-nav__links {
    gap: clamp(10px, 3vw, 17px);
  }

  .pb-nav__links a {
    font-size: clamp(13px, 4vw, 16px);
  }

  .pb-cs-header {
    padding: 64px 0 48px;
  }

  .pb-cs-title {
    font-size: clamp(48px, 14vw, 64px);
  }

  .pb-cs-standfirst {
    font-size: 19px;
  }

  .pb-spec {
    grid-template-columns: 1fr;
    margin: 32px 0 72px;
  }

  .pb-spec > div,
  .pb-spec > div:first-child {
    padding: 16px 0;
  }

  .pb-spec > div + div {
    border-top: 1px solid var(--pb-rule);
    border-left: 0;
  }

  .pb-section {
    margin-bottom: 72px;
  }

  .pb-rule-title {
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 10px;
  }

  .pb-section h2 {
    font-size: 34px;
  }

  .pb-section p {
    font-size: 16px;
  }

  .pb-figure {
    margin: 32px 0 40px;
  }

  .pb-figcaption {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .pb-figcaption__body {
    text-align: left;
  }

  .pb-footer--cols {
    margin-top: 80px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* prose lists */
.pb-section ul {
  max-width: var(--pb-measure);
  margin: 0 0 var(--pb-space-4);
  padding-left: 1.3em;
}
.pb-section li { margin-bottom: var(--pb-space-2); }
.pb-section li::marker { color: var(--pb-accent); }