/* Case-study pages (website/projects/*.html). Builds on tp-hero (pages.css)
   and the Home closing band (css/home/06-next.css). */

.tp-case-page h2,
.tp-case-page h3 { text-transform: none; }

/* Hero: client name large over the photo. */
.tp-case-hero { min-height: max(560px, min(78svh, 820px)); }
.tp-case-hero .tp-hero-copy { max-width: 1060px; }
.tp-case-hero .tp-hero-title {
  font-size: clamp(3rem, 7.4vw, 7.2rem);
  line-height: .94;
  overflow-wrap: anywhere;
}
.tp-case-hero .tp-hero-lead { max-width: 620px; font-size: clamp(1.05rem, 1.3vw, 1.25rem); }
.tp-case-back {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: rgba(255, 255, 255, .45);
  padding-block: 6px;
}
.tp-case-back:hover { text-decoration-color: #fff; }
.tp-case-back:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
.tp-case-tags.tp-hero-meta { gap: 8px; }
.tp-case-tags span {
  padding: 7px 12px;
  border: 1px solid rgba(255, 255, 255, .38);
  border-radius: 999px;
  background: rgba(16, 18, 24, .35);
  color: #fff;
  line-height: 1;
}

/* Overview and facts. */
.tp-case-intro { padding-block: clamp(72px, 9vw, 128px) clamp(40px, 5vw, 72px); background: #fff; }
.tp-case-intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: clamp(40px, 6vw, 96px);
  align-items: start;
}
.tp-case-intro .tm-eyebrow { margin-bottom: 20px; }
.tp-case-standfirst {
  margin: 0;
  color: var(--tm-ink);
  font: 500 clamp(2rem, 3.8vw, 3.4rem)/1.05 Gellix, Arial, sans-serif;
  letter-spacing: -.035em;
  text-wrap: balance;
}
.tp-case-summary {
  max-width: 62ch;
  margin: 28px 0 0;
  color: var(--tm-text);
  font-size: 1.12rem;
  line-height: 1.7;
}
.tp-case-facts { margin: 0; border-top: 1px solid var(--tm-ink); }
.tp-case-facts div {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--tm-line);
}
.tp-case-facts dt {
  color: var(--tm-text);
  font: .68rem/1.9 var(--tm-mono);
  letter-spacing: .1em;
  text-transform: uppercase;
}
.tp-case-facts dd { margin: 0; color: var(--tm-ink); font-size: .98rem; line-height: 1.55; }

/* The story: numbered chapters on a clean editorial column. */
.tp-case-story { padding-block: 0 clamp(72px, 9vw, 120px); background: #fff; }
.tp-case-chapter {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2.2fr);
  gap: clamp(20px, 5vw, 96px);
  padding-block: clamp(40px, 5vw, 64px);
  border-top: 1px solid var(--tm-line);
}
.tp-case-num {
  margin: 0;
  color: var(--tm-blue);
  font: 500 .8rem/1.6 var(--tm-mono);
  letter-spacing: .12em;
}
.tp-case-chapter-body { max-width: 760px; }
.tp-case-chapter-title {
  margin: 0;
  color: var(--tm-ink);
  font: 500 clamp(1.7rem, 2.6vw, 2.4rem)/1.1 Gellix, Arial, sans-serif;
  letter-spacing: -.025em;
}
.tp-case-lede {
  margin: 20px 0 0;
  color: var(--tm-ink);
  font: 400 clamp(1.2rem, 1.6vw, 1.45rem)/1.45 Gellix, Arial, sans-serif;
  letter-spacing: -.01em;
}
.tp-case-text { margin: 18px 0 0; color: var(--tm-text); font-size: 1.04rem; line-height: 1.75; }

/* The result: dark ink band for emphasis. */
.tp-case-result {
  padding-block: clamp(80px, 10vw, 140px);
  background: radial-gradient(90% 120% at 90% 0%, #1d2f6b 0%, var(--tm-ink) 62%);
  color: #fff;
}
.tp-case-result-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2.2fr);
  gap: clamp(20px, 5vw, 96px);
}
.tp-case-result-num { color: #8fa9ff; }
.tp-case-result-title {
  margin: 0;
  color: #8fa9ff;
  font: 500 .8rem/1.6 var(--tm-mono);
  letter-spacing: .14em;
  text-transform: uppercase;
}
.tp-case-page .tp-case-result-title { text-transform: uppercase; }
.tp-case-result-line {
  margin: 20px 0 0;
  color: #fff;
  font: 500 clamp(2rem, 4.2vw, 3.8rem)/1.06 Gellix, Arial, sans-serif;
  letter-spacing: -.035em;
  text-wrap: balance;
}
.tp-case-result-text {
  max-width: 62ch;
  margin: 32px 0 0;
  color: rgba(255, 255, 255, .78);
  font-size: 1.06rem;
  line-height: 1.75;
}

/* More work: a photo-card rail, same treatment as the Home work bento. */
.tp-case-more { padding-block: clamp(72px, 9vw, 120px) 40px; background: #fff; overflow: hidden; }
.tp-case-more-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px 40px;
  margin-bottom: clamp(28px, 3.5vw, 44px);
}
.tp-case-more-title {
  margin: 0;
  color: var(--tm-ink);
  font: 500 clamp(2rem, 1.4rem + 2vw, 3rem)/1.08 Gellix, Arial, sans-serif;
  letter-spacing: -.02em;
}
.tp-case-more-tools { display: flex; align-items: center; gap: 12px; }
.tp-case-more-tools .tm-text-link { margin-right: 12px; }
.tp-case-rail-btn {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--tm-line);
  border-radius: 50%;
  background: #fff;
  color: var(--tm-ink);
  font: 1.15rem/1 Arial, sans-serif;
  cursor: pointer;
  transition: background-color .25s, color .25s, border-color .25s;
}
.tp-case-rail-btn:hover { background: var(--tm-ink); border-color: var(--tm-ink); color: #fff; }
.tp-case-rail-btn:focus-visible { outline: 3px solid var(--tm-blue); outline-offset: 3px; }
.tp-case-rail {
  display: flex;
  gap: clamp(12px, 1.4vw, 20px);
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}
.tp-case-rail::-webkit-scrollbar { display: none; }
.tp-case-rail-item { flex: 0 0 calc((100% - 2 * clamp(12px, 1.4vw, 20px)) / 3.15); scroll-snap-align: start; }
.tp-case-card {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  border-radius: 18px;
  background: var(--tm-ink);
  color: #fff;
  text-decoration: none;
  isolation: isolate;
}
.tp-case-card-photo {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .7s cubic-bezier(.16, 1, .3, 1);
}
.tp-case-card::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(16, 18, 24, .45) 0%, rgba(16, 18, 24, 0) 24%),
    linear-gradient(0deg, rgba(16, 18, 24, .94) 0%, rgba(16, 18, 24, .66) 38%, rgba(16, 18, 24, 0) 68%);
}
.tp-case-card-tag {
  position: absolute;
  top: 20px;
  left: 22px;
  padding: 7px 12px;
  border: 1px solid rgba(255, 255, 255, .38);
  border-radius: 999px;
  background: rgba(16, 18, 24, .35);
  font: 500 .64rem/1 var(--tm-mono);
  letter-spacing: .12em;
  text-transform: uppercase;
}
.tp-case-card-body {
  position: absolute;
  inset: auto 22px 22px;
  display: grid;
  gap: 10px;
  padding-right: 52px;
}
.tp-case-card-client {
  font: 600 clamp(1.6rem, 2.2vw, 2.2rem)/1 Gellix, Arial, sans-serif;
  letter-spacing: -.04em;
}
.tp-case-card-line { color: rgba(255, 255, 255, .86); font-size: .92rem; line-height: 1.45; }
.tp-case-card-go {
  position: absolute;
  right: 22px;
  bottom: 22px;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #fff;
  color: var(--tm-ink);
  font: 1.1rem/1 Arial, sans-serif;
  transition: transform .4s cubic-bezier(.16, 1, .3, 1), background-color .3s, color .3s;
}
.tp-case-card:hover .tp-case-card-photo,
.tp-case-card:focus-visible .tp-case-card-photo { transform: scale(1.04); }
.tp-case-card:hover .tp-case-card-go,
.tp-case-card:focus-visible .tp-case-card-go { transform: translateX(4px); background: var(--tm-blue); color: #fff; }
.tp-case-card:focus-visible { outline: 3px solid var(--tm-blue); outline-offset: -3px; }

/* Sticky CTA bar: appears after the hero, hides at the closing band and footer. */
.tp-case-sticky {
  position: fixed;
  inset: auto 0 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px max(20px, calc((100vw - 1200px) / 2));
  background: rgba(16, 18, 24, .96);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-top: 1px solid rgba(255, 255, 255, .12);
  transform: translateY(100%);
  visibility: hidden;
  transition: transform .3s cubic-bezier(.16, 1, .3, 1), visibility 0s .3s;
}
.tp-case-sticky.is-visible { transform: none; visibility: visible; transition-delay: 0s; }
.tp-case-sticky-text { margin: 0; color: #fff; font: 500 1rem/1.3 Gellix, Arial, sans-serif; }
.tp-case-sticky-text span {
  margin-left: 12px;
  color: rgba(255, 255, 255, .6);
  font: .66rem/1 var(--tm-mono);
  letter-spacing: .1em;
  text-transform: uppercase;
}
.tp-case-sticky-btn.tm-btn { background: #fff; color: var(--tm-ink); min-height: 44px; }
.tp-case-sticky-btn.tm-btn:hover { background: #e6ecfb; color: var(--tm-ink); }
.tp-case-sticky-btn.tm-btn:focus-visible { outline: 3px solid #afc3ff; outline-offset: 3px; }

@media (max-width: 991px) {
  .tp-case-rail-item { flex-basis: 46%; }
}
@media (max-width: 800px) {
  .tp-case-hero { min-height: max(560px, 86svh); }
  .tp-case-intro-grid,
  .tp-case-chapter,
  .tp-case-result-grid { grid-template-columns: minmax(0, 1fr); }
  .tp-case-chapter { gap: 14px; }
  .tp-case-result-grid { gap: 14px; }
  .tp-case-facts div { grid-template-columns: 96px minmax(0, 1fr); }
  .tp-case-rail-btn { display: none; }
  .tp-case-rail { margin-inline: -20px; padding-inline: 20px; scroll-padding-inline: 20px; }
  .tp-case-rail-item { flex-basis: 80%; }
}
@media (max-width: 640px) {
  .tp-case-sticky { justify-content: center; }
  .tp-case-sticky-text { display: none; }
  .tp-case-sticky-btn.tm-btn { width: 100%; justify-content: space-between; }
}
@media (prefers-reduced-motion: reduce) {
  .tp-case-card-photo,
  .tp-case-card-go,
  .tp-case-sticky { transition: none; }
  .tp-case-card:hover .tp-case-card-photo,
  .tp-case-card:focus-visible .tp-case-card-photo,
  .tp-case-card:hover .tp-case-card-go,
  .tp-case-card:focus-visible .tp-case-card-go { transform: none; }
}