/* ==========================================================================
   case-study.css — Shared styles for all case study pages (DS v4)
   ========================================================================== */

/* Ensure content layers above star canvas */
.case-hero,
.case-body,
.case-nav,
.cta-section,
.footer { position: relative; z-index: 1; }

/* --------------------------------------------------------------------------
   Case Hero
   -------------------------------------------------------------------------- */
.case-hero {
  padding-top: 64px;
}

.case-hero__content {
  padding-top: var(--sp-16);
  padding-bottom: var(--sp-12);
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}

.case-hero__tags {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.case-hero__title {
  font-family: var(--display);
  font-size: clamp(56px, 8vw, 110px);
  line-height: .93;
  letter-spacing: .01em;
  text-transform: uppercase;
  color: var(--t1);
}

.case-hero__subtitle {
  color: var(--t2);
  max-width: 600px;
}

.case-hero__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
  color: var(--t3);
}

.case-hero__meta-sep {
  color: var(--b1);
}

.case-hero__image {
  width: 100%;
  aspect-ratio: 16/7;
  overflow: hidden;
  background: var(--bg1);
}

.case-hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 2-column split hero: text left, image right */
@media (min-width: 768px) {
  .case-hero--split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
    padding-top: 0;
    min-height: 90vh;
  }

  .case-hero--split .case-hero__content {
    max-width: none;
    margin: 0;
    padding-inline: clamp(32px, 6vw, 80px);
    padding-top: calc(64px + var(--sp-16));
    padding-bottom: var(--sp-16);
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .case-hero--split .case-hero__image {
    aspect-ratio: unset;
    height: 100%;
  }
}

/* --------------------------------------------------------------------------
   Case Body Blocks
   -------------------------------------------------------------------------- */
.case-body {
  padding-block: var(--sp-16);
  display: flex;
  flex-direction: column;
  gap: var(--sp-16);
}

@media (min-width: 1024px) {
  .case-body {
    padding-block: var(--sp-32);
    gap: var(--sp-24);
  }
}

/* BlockText */
.block-text__inner {
  max-width: 680px;
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
}

.block-text__inner h2 { color: var(--t1); }
.block-text__inner p  { color: var(--t2); }

/* BlockImage */
.block-image {
  width: 100%;
  overflow: hidden;
}

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

/* BlockImageGrid */
.block-image-grid {
  display: grid;
  gap: var(--sp-4);
}

@media (min-width: 640px) {
  .block-image-grid { grid-template-columns: repeat(2, 1fr); }
}

.block-image-grid img {
  width: 100%;
  height: auto;
  background: var(--bg1);
}

/* --------------------------------------------------------------------------
   Case Section — 2-column text + image, alternating
   -------------------------------------------------------------------------- */
.case-section {
  display: grid;
  gap: var(--sp-10);
  align-items: center;
}

@media (min-width: 768px) {
  .case-section {
    grid-template-columns: minmax(0, 380px) 1fr;
    gap: var(--sp-12);
    align-items: start;
  }
  .case-section--flip {
    grid-template-columns: 1fr minmax(0, 380px);
  }
  .case-section--flip .case-section__media { order: -1; }
}

.case-section__text {
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}

.case-section__text h2 { color: var(--t1); }
.case-section__text p  { color: var(--t2); }

.case-section__media {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.case-section__media img {
  width: 100%;
  height: auto;
  display: block;
}

.case-section__media-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
}

.case-section__media-grid img {
  width: 100%;
  height: auto;
  display: block;
}

/* --------------------------------------------------------------------------
   Case Carousel
   -------------------------------------------------------------------------- */
.case-carousel {
  width: 100%;
}

.case-carousel__track {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none;
  border-radius: 8px;
  overflow-y: hidden;
}

.case-carousel__track::-webkit-scrollbar { display: none; }

.case-carousel__track img {
  flex: 0 0 100%;
  width: 100%;
  height: auto;
  scroll-snap-align: start;
  display: block;
}

.case-carousel__ui {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-4);
  margin-top: var(--sp-4);
}

.case-carousel__btn {
  background: transparent;
  border: 1px solid var(--b1);
  color: var(--t2);
  width: 32px;
  height: 32px;
  min-height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color .2s, color .2s;
  padding: 0;
}

.case-carousel__btn:hover { border-color: var(--y); color: var(--y); }
.case-carousel__btn:disabled { opacity: .3; cursor: default; }

.case-carousel__dots {
  display: flex;
  gap: 8px;
  align-items: center;
}

.case-carousel__dot {
  width: 6px;
  height: 6px;
  min-height: 0;
  border-radius: 50%;
  background: var(--b2);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: background .2s, transform .2s;
}

.case-carousel__dot.is-active {
  background: var(--y);
  transform: scale(1.5);
}

/* BlockQuote */
.block-quote {
  border-left: 3px solid var(--y);
  padding-left: var(--sp-6);
  max-width: 720px;
  margin-inline: auto;
}

.block-quote__text {
  font-family: var(--display);
  font-size: var(--text-3xl);
  text-transform: uppercase;
  color: var(--t1);
  line-height: 1.1;
}

.block-quote__source {
  margin-top: var(--sp-4);
  font-family: var(--mono);
  font-size: var(--text-xs);
  color: var(--t3);
  letter-spacing: .08em;
  text-transform: uppercase;
}

/* BlockStats */
.block-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-12);
  justify-content: center;
  padding: var(--sp-16) 0;
}

.block-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  text-align: center;
}

.block-stat__number {
  font-family: var(--display);
  font-size: var(--text-6xl);
  color: var(--y);
  line-height: 1;
}

.block-stat__label {
  font-family: var(--mono);
  font-size: var(--text-xs);
  color: var(--t3);
  letter-spacing: .08em;
  text-transform: uppercase;
  max-width: 160px;
  line-height: 1.4;
  text-align: center;
}

/* --------------------------------------------------------------------------
   Case Navigation (prev/next)
   -------------------------------------------------------------------------- */
.case-nav {
  border-top: 1px solid var(--b0);
  display: grid;
  grid-template-columns: auto 1fr;
}

@media (max-width: 639px) {
  .case-nav { grid-template-columns: 1fr; }
}

.case-nav__back {
  color: var(--t3);
  display: flex;
  align-items: center;
  padding: var(--sp-8) var(--sp-8);
  border-right: 1px solid var(--b0);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .12em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s;
}

@media (max-width: 639px) {
  .case-nav__back {
    border-right: none;
    border-bottom: 1px solid var(--b0);
  }
}

.case-nav__back:hover { color: var(--y); }
.case-nav__back:focus-visible { outline: 2px solid var(--y); outline-offset: 3px; }

.case-nav__adjacent {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

@media (max-width: 639px) {
  .case-nav__adjacent { grid-template-columns: 1fr; }
}

.case-nav__item {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  padding: var(--sp-10) var(--sp-8);
  background: var(--bg);
  text-decoration: none;
  color: inherit;
  transition: background .3s;
  border-left: 1px solid var(--b0);
}

.case-nav__item:first-child { border-left: none; }
.case-nav__item:only-child  { grid-column: 1 / -1; }
.case-nav__item:hover { background: var(--bg1); }
.case-nav__item:focus-visible { outline: 2px solid var(--y); outline-offset: -2px; }

.case-nav__item--next { text-align: right; }

.case-nav__direction { color: var(--t3); }
.case-nav__title     { color: var(--t1); }

/* ==========================================================================
   MedMe cs-* components (DS v4)
   ========================================================================== */

/* Container */
.cs-container {
  max-width: 900px;
  margin-inline: auto;
  padding-inline: var(--gap);
}

@media (max-width: 1100px) { .cs-container { padding-inline: 32px; } }
@media (max-width: 640px)  { .cs-container { padding-inline: 20px; } }

/* --------------------------------------------------------------------------
   cs-hero — 2-column split (content left, image right)
   -------------------------------------------------------------------------- */
.cs-hero {
  border-bottom: 1px solid var(--b0);
  display: grid;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .cs-hero {
    grid-template-columns: 1fr 1fr;
    min-height: 100vh;
  }
}

.cs-hero__left {
  padding-top: calc(64px + var(--sp-16));
  padding-bottom: var(--sp-12);
  padding-inline: clamp(20px, 6vw, 80px);
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
  justify-content: center;
}

.cs-hero__right {
  background: var(--bg1);
  overflow: hidden;
  min-height: 320px;
}

.cs-hero__right img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.cs-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--t3);
}

.cs-eyebrow--muted { opacity: .6; }

.cs-hero__title {
  font-family: var(--display);
  font-size: clamp(36px, 4.5vw, 72px);
  line-height: .95;
  letter-spacing: .01em;
  text-transform: uppercase;
  color: var(--t1);
}

.cs-lead {
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--t2);
}

/* Impact grid — 3 cols hairline border */
.cs-impact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--b0);
  border: 1px solid var(--b0);
  border-radius: 8px;
  overflow: hidden;
}

@media (max-width: 640px) {
  .cs-impact-grid { grid-template-columns: 1fr; }
}

.cs-impact-cell {
  background: var(--bg1);
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.cs-impact-num {
  font-family: var(--display);
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1;
  letter-spacing: .01em;
  color: var(--t1);
}

.cs-impact-label {
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.5;
  color: var(--t3);
  letter-spacing: .05em;
}

.cs-accent { color: var(--y); }

/* Meta grid — 4 cols hairline border */
.cs-meta-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--b0);
  border: 1px solid var(--b0);
  border-radius: 8px;
  overflow: hidden;
}

@media (max-width: 640px) {
  .cs-meta-grid { grid-template-columns: repeat(2, 1fr); }
}

.cs-meta-cell {
  background: var(--bg);
  padding: var(--sp-5) var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.cs-meta-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--t3);
}

.cs-meta-value {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--t1);
}

/* --------------------------------------------------------------------------
   Current state
   -------------------------------------------------------------------------- */
.cs-current-state {
  padding-block: var(--sp-12);
  background: var(--bg1);
  border-bottom: 1px solid var(--b0);
}

.cs-current-state .cs-container {
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}

/* --------------------------------------------------------------------------
   Diagram
   -------------------------------------------------------------------------- */
.cs-diagram {
  width: 100%;
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg1);
  border: 1px solid var(--b0);
  padding: var(--sp-4);
  overflow-x: auto;
}

.cs-diagram svg {
  display: block;
  width: 100%;
  height: auto;
  min-width: 480px;
}

/* Caption */
.cs-caption {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--t3);
  letter-spacing: .05em;
}

figcaption.cs-caption { margin-top: var(--sp-2); }

/* --------------------------------------------------------------------------
   Layout — TOC sidebar + content
   -------------------------------------------------------------------------- */
.cs-layout {
  display: grid;
  grid-template-columns: 1fr;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--gap);
}

@media (max-width: 1100px) { .cs-layout { padding-inline: 32px; } }
@media (max-width: 640px)  { .cs-layout { padding-inline: 20px; } }

@media (min-width: 1024px) {
  .cs-layout {
    grid-template-columns: 180px 1fr;
    gap: var(--sp-16);
    align-items: start;
  }
}

/* TOC */
.cs-toc { display: none; }

@media (min-width: 1024px) {
  .cs-toc {
    display: block;
    position: sticky;
    top: 96px;
  }
}

.cs-toc__inner {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cs-toc__item {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--t3);
  padding: 6px 0 6px var(--sp-3);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color .2s, border-color .2s;
  white-space: nowrap;
}

.cs-toc__item:hover { color: var(--t2); }

.cs-toc__item.is-active {
  color: var(--y);
  border-left-color: var(--y);
}

/* Content area */
.cs-content {
  padding-block: var(--sp-16);
  min-width: 0;
}

/* --------------------------------------------------------------------------
   Sections
   -------------------------------------------------------------------------- */
.cs-section {
  padding-block: var(--sp-12);
  border-bottom: 1px solid var(--b0);
}

.cs-section:first-child { padding-top: 0; }
.cs-section:last-child { border-bottom: none; }

.cs-section__header {
  display: flex;
  align-items: baseline;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}

.cs-section__num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--t3);
  flex-shrink: 0;
}

.cs-section__title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--t1);
  line-height: 1.2;
}

.cs-section__body {
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
}

.cs-section__body > p {
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--t2);
}

/* Pull quote */
.cs-pullquote {
  border-left: 3px solid var(--y);
  padding-left: var(--sp-6);
  margin: 0;
  font-size: var(--text-lg);
  line-height: 1.5;
  color: var(--t1);
  font-style: italic;
}

/* --------------------------------------------------------------------------
   Fear cards
   -------------------------------------------------------------------------- */
.cs-fear-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--b0);
  border: 1px solid var(--b0);
  border-radius: 8px;
  overflow: hidden;
}

@media (max-width: 680px) {
  .cs-fear-cards { grid-template-columns: 1fr; }
}

.cs-fear-card {
  background: var(--bg1);
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.cs-fear-card__label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--y);
}

.cs-fear-card__title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--t1);
  line-height: 1.3;
}

.cs-fear-card__body {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--t2);
}

/* --------------------------------------------------------------------------
   Compare
   -------------------------------------------------------------------------- */
.cs-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--b0);
  border: 1px solid var(--b0);
  border-radius: 8px;
  overflow: hidden;
}

@media (max-width: 640px) {
  .cs-compare { grid-template-columns: 1fr; }
}

.cs-compare > div {
  background: var(--bg1);
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.cs-compare__label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--t3);
}

.cs-compare__text {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--t2);
}

/* --------------------------------------------------------------------------
   Rejected approach
   -------------------------------------------------------------------------- */
.cs-rejected {
  background: rgba(127, 32, 32, .07);
  border: 1px solid rgba(127, 32, 32, .25);
  border-radius: 8px;
  padding: var(--sp-5) var(--sp-6);
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--t2);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.cs-rejected__label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #f87060;
  opacity: .7;
}

/* --------------------------------------------------------------------------
   Edge cases
   -------------------------------------------------------------------------- */
.cs-edge-cases {
  border: 1px solid var(--b0);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.cs-edge-cases__label {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--t3);
  padding: var(--sp-3) var(--sp-5);
  background: var(--bg1);
  border-bottom: 1px solid var(--b0);
}

.cs-edge-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5);
  border-bottom: 1px solid var(--b0);
  align-items: start;
}

.cs-edge-row:last-child { border-bottom: none; }

.cs-edge-condition {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--t2);
}

.cs-edge-arrow {
  color: var(--t3);
  font-size: 14px;
  flex-shrink: 0;
  padding-top: 1px;
}

.cs-edge-response {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--t2);
}

@media (max-width: 560px) {
  .cs-edge-row { grid-template-columns: 1fr; }
  .cs-edge-arrow { display: none; }
}

/* --------------------------------------------------------------------------
   Addresses
   -------------------------------------------------------------------------- */
.cs-addresses {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-5);
  background: rgba(243, 176, 46, .04);
  border: 1px solid rgba(243, 176, 46, .14);
  border-radius: 8px;
}

.cs-addresses__label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--y);
  flex-shrink: 0;
}

.cs-addresses__metric {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--t2);
}

/* --------------------------------------------------------------------------
   Screens — mobile mockup containers
   -------------------------------------------------------------------------- */
.cs-screens {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.cs-screen-wrap {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.cs-screen-placeholder {
  background: var(--bg1);
  border: 1px solid var(--b0);
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 9 / 19;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cs-screen-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (min-width: 560px) {
  .cs-screens--1 {
    flex-direction: row;
    justify-content: center;
  }
  .cs-screens--1 .cs-screen-wrap { flex: 0 0 260px; }

  .cs-screens--2 {
    flex-direction: row;
    justify-content: center;
    gap: var(--sp-5);
  }
  .cs-screens--2 .cs-screen-wrap { flex: 0 0 220px; }

  .cs-screens--3 {
    flex-direction: row;
    justify-content: center;
    gap: var(--sp-4);
  }
  .cs-screens--3 .cs-screen-wrap { flex: 0 0 180px; }

  .cs-screens--4 {
    flex-direction: row;
    justify-content: center;
    gap: var(--sp-3);
  }
  .cs-screens--4 .cs-screen-wrap { flex: 0 0 140px; }

  .cs-screens--5 {
    flex-direction: row;
    justify-content: center;
    gap: var(--sp-2);
  }
  .cs-screens--5 .cs-screen-wrap { flex: 0 0 110px; }
}

/* --------------------------------------------------------------------------
   Benchmark grid
   -------------------------------------------------------------------------- */
.cs-benchmark-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--b0);
  border: 1px solid var(--b0);
  border-radius: 8px;
  overflow: hidden;
}

@media (max-width: 640px) {
  .cs-benchmark-grid { grid-template-columns: 1fr; }
}

.cs-benchmark-card {
  background: var(--bg1);
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.cs-benchmark-num {
  font-family: var(--display);
  font-size: clamp(36px, 4vw, 56px);
  line-height: 1;
  color: var(--t1);
}

.cs-benchmark-desc {
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--t2);
}

.cs-benchmark-source {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .08em;
  color: var(--t3);
  margin-top: var(--sp-2);
}

/* --------------------------------------------------------------------------
   Trust pills
   -------------------------------------------------------------------------- */
.cs-trust-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.cs-trust-pill {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--t2);
  background: var(--bg1);
  border: 1px solid var(--b1);
  border-radius: 100px;
  padding: 6px var(--sp-4);
}