/* ============================================================
   CASE STUDY PAGES
   (Tokens are defined in tokens.css — loaded before this file.)
   ============================================================ */

/* Restore original container widths for case study pages */
:root {
  --container-max: 1240px;
  --container-px:  var(--space-13);
}

@media (max-width: 1200px) {
  :root { --container-px: var(--space-11); }
}

@media (max-width: 768px) {
  :root { --container-px: var(--space-8); }
}

/* Project navigation (prev / next) */
.cs-project-nav {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  gap: var(--space-sm);
  padding: var(--space-xl) 0 var(--space-lg);
  margin-top: var(--space-xl);
}
.cs-project-nav__prev,
.cs-project-nav__next {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  flex: 1;
  padding: 0;
  border: var(--border-1) solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
  overflow: hidden;
  transition: border-color var(--ease), box-shadow var(--ease);
}

.cs-project-nav__thumb {
  width: 100%;
  height: 350px;
  object-fit: cover;
  object-position: center;
  display: block;
  flex-shrink: 0;
}

.cs-project-nav__prev .cs-project-nav__thumb { object-position: center; }
.cs-project-nav__thumb.cs-project-nav__thumb--locate-alpha { object-position: center 67%; }

.cs-project-nav__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-6) var(--space-6) var(--space-sm);
  order: -1;
}
.cs-project-nav__prev:hover,
.cs-project-nav__next:hover {
  border-color: var(--color-accent);
  box-shadow: 0 var(--border-3) 12px var(--color-shadow-sm);
}
.cs-project-nav__next .cs-project-nav__info { align-items: flex-start; text-align: left; }
.cs-project-nav__label {
  font-size: var(--text-2xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-caps-md);
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.cs-project-nav__title {
  font-size: clamp(18px, 2.5vw, 26px);
  font-family: var(--font-serif);
  font-weight: var(--weight-regular);
  color: var(--color-text);
  transition: color var(--ease);
}
.cs-project-nav__prev:hover .cs-project-nav__title,
.cs-project-nav__next:hover .cs-project-nav__title {
  color: var(--color-accent);
}

.cs-hero {
  padding-top: calc(var(--nav-h) + calc(var(--space-xl) * 0.25));
  padding-bottom: var(--space-lg);
}

/* Hero two-column split */
.cs-hero__split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-14);
  align-items: center;
  margin-bottom: 0;
}

.cs-hero__right .cs-cover__img {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}

.cs-hero__right .cs-cover__img img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cs-hero__right .card__thumb {
  aspect-ratio: 4 / 3;
}

.cs-hero__right .card__thumb img {
  top: auto;
  bottom: 0;
  left: 0;
  transform: none;
  width: 92%;
}

/* Side-by-side media grid */
.cs-media-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}
.cs-media-row .cs-media {
  margin: 0;
}
.cs-media-row figcaption {
  text-align: left;
}

.cs-gif-container {
  background: var(--color-warm);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1 / 1;
  overflow: hidden;
}
.cs-gif-container img {
  max-width: 55%;
  height: auto;
  border-radius: var(--radius-md);
}

/* Two-image side-by-side variant */
.cs-gif-container--row {
  gap: var(--space-sm);
}
.cs-gif-container--row img {
  max-width: 38%;
  height: auto;
  border-radius: var(--radius-md);
}

/* No background — used when inside an outer tan container */
.cs-gif-container--no-bg {
  background: transparent;
  aspect-ratio: unset;
  padding: 0;
}
.cs-gif-container--no-bg img {
  width: 100%;
  height: auto;
  max-width: none;
  border-radius: var(--radius-md);
}

/* Grayscale step image box — square gray container */
.cs-step-img-box {
  aspect-ratio: 4 / 3;
  background: var(--color-off-white);
  border: var(--border-1) solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
}
.cs-step-img-box img {
  max-width: 38%;
  max-height: 100%;
  height: auto;
  width: auto;
  border-radius: var(--radius-sm);
  border: var(--border-1) solid var(--color-border);
}

/* Iteration phone screenshots */
.cs-iter-row {
  margin-top: var(--space-md);
}
.cs-iter-phones {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  height: 400px;
  overflow: hidden;
}
.cs-iter-phones img,
.cs-iter-phones .cs-media-placeholder {
  flex: 1;
  min-width: 0;
  height: 100%;
  object-fit: contain;
  object-position: center;
  border-radius: var(--radius-md);
}
.cs-iter-placeholder {
  aspect-ratio: 9 / 16;
  flex-shrink: 0;
}

/* Final style guide phone gallery */
.cs-style-phones {
  background: var(--color-off-white);
  border: var(--border-1) solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  padding: var(--space-lg);
  margin-top: var(--space-md);
  overflow: hidden;
}
.cs-style-phones img {
  height: 420px;
  width: auto;
  border-radius: var(--radius-md);
  display: block;
}

/* Ideation / Crazy 8s container — gray, two images side by side */
.cs-ideation-container {
  background: var(--color-off-white);
  border-radius: var(--radius-lg);
  border: var(--border-1) solid var(--color-border);
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-lg);
}
.cs-ideation-container img {
  width: 45%;
  height: auto;
  border-radius: var(--radius-md);
}

/* Outer tan container wrapping a full cs-split */
.cs-features-wrap {
  background: var(--color-warm);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-top: var(--space-md);
}
.cs-split--centered {
  align-items: center !important;
  margin-top: 0;
}

/* Generic two-column content split */
.cs-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: start;
  margin-top: var(--space-md);
}

.cs-split--3-2 {
  grid-template-columns: 3fr 2fr;
}

.cs-split__left,
.cs-split__right {
  min-width: 0;
}

.cs-back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  transition: color var(--ease);
}
.cs-back:hover { color: var(--color-accent); }

.cs-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-md);
}

.cs-hero__title {
  font-size: clamp(32px, 5vw, 60px);
  font-family: var(--font-serif);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-tighter);
  line-height: var(--leading-tight);
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.cs-hero__sub {
  font-size: clamp(var(--text-base), 2vw, var(--text-md));
  font-weight: var(--weight-light);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 680px;
  margin-bottom: var(--space-lg);
}

.cs-meta {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
  padding-top: var(--space-lg);
  border-top: var(--border-1) solid var(--color-border);
}

.cs-meta--cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
  border-top: none;
  padding-top: var(--space-lg);
}

.cs-meta--cards .cs-meta__item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-md);
  background: var(--color-white);
  border: var(--border-1) solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 var(--border-3) 6px var(--color-shadow-xs);
}

.cs-meta__item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.cs-meta__label {
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-caps-md);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.cs-meta__value {
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  color: var(--color-text);
}

/* Cover image */
.cs-cover {
  padding: var(--space-lg) 0;
}

.cs-cover__img {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  position: relative;
}

.cs-cover__img img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}

/* reuse card gradient placeholders */
.cs-cover__img--1 { background: linear-gradient(135deg, #ccd9f5 0%, var(--color-accent) 100%); }
.cs-cover__img--2 { background: linear-gradient(135deg, #d6eaaf 0%, #7aaa2e 100%); }
.cs-cover__img--3 { background: linear-gradient(135deg, var(--color-light-blue) 0%, var(--color-accent-dark) 100%); }
.cs-cover__img--4 { background: linear-gradient(135deg, #f0f3fb 0%, #4a70c4 100%); }

/* Body / content area */
.cs-body {
  padding: var(--space-xl) 0 var(--space-2xl);
}

.cs-container {
  max-width: var(--container-max);
}

.cs-sidenav {
  position: fixed;
  left: var(--space-md);
  top: calc(var(--nav-h) + var(--space-11));
  display: flex;
  flex-direction: column;
  gap: var(--border-3);
  z-index: 50;
}

.cs-sidenav__link {
  font-size: var(--text-2xs);
  font-weight: var(--weight-regular);
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-1) 0 var(--space-1) var(--space-3);
  border-left: var(--border-3) solid transparent;
  transition: color var(--ease-fast), border-color var(--ease-fast);
  line-height: var(--leading-base);
  white-space: nowrap;
}

.cs-sidenav__link--overview {
  font-weight: var(--weight-medium);
  color: var(--color-text);
  margin-bottom: var(--space-2);
  padding-bottom: var(--space-3);
  border-bottom: var(--border-1) solid var(--color-border);
  border-left: none !important;
}

.cs-sidenav__link:hover {
  color: var(--color-text);
}

.cs-sidenav__link.active {
  color: var(--color-text);
  border-left-color: var(--color-accent);
  font-weight: var(--weight-medium);
}

@media (max-width: 1440px) {
  .cs-sidenav {
    display: none;
  }
}

.cs-placeholder {
  font-size: var(--text-md);
  font-weight: var(--weight-light);
  color: var(--color-text-muted);
  padding: var(--space-xl) 0;
  border-top: var(--border-1) solid var(--color-border);
}

/* Content sections — use these when adding case study content */
.cs-section {
  margin-bottom: var(--space-xl);
}

.cs-section h2 {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.cs-section h3 {
  font-size: var(--text-lg);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

/* Lennar + Mark Spain page: eyebrow h2 + large h3 heading pattern */
.lennar-page .cs-section h2,
.markspain-page .cs-section h2 {
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-caps-lg);
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.lennar-page .cs-section h3,
.markspain-page .cs-section h3 {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-snug);
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

/* Sub-headings that should stay small even on lennar-page */
.lennar-page .cs-section h3.cs-h3-sub,
.markspain-page .cs-section h3.cs-h3-sub,
.cs-h3-sub {
  font-size: var(--text-lg);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-snug);
  line-height: var(--leading-normal);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

/* Keep step sub-headings at normal size */
.lennar-page .cs-step h3,
.markspain-page .cs-step h3 {
  font-size: var(--text-lg);
  letter-spacing: var(--tracking-snug);
  line-height: var(--leading-normal);
  margin-bottom: var(--space-2);
}

.cs-section p {
  font-size: var(--text-md);
  font-weight: var(--weight-light);
  color: var(--color-text-muted);
  line-height: var(--leading-looser);
  margin-bottom: var(--space-md);
}

.cs-image {
  width: 100%;
  border-radius: var(--radius-md);
  margin: var(--space-lg) 0;
}

.cs-image img {
  width: 100%;
  border-radius: var(--radius-md);
}

.cs-image figcaption {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  text-align: center;
}

/* Stat callouts */
.cs-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}

.cs-stat {
  background: var(--color-off-white);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  text-align: center;
}

.cs-stat__number {
  font-size: var(--text-2xl);
  font-weight: var(--weight-semibold);
  color: var(--color-accent);
  letter-spacing: var(--tracking-tighter);
  display: block;
  margin-bottom: var(--space-1);
}

.cs-stat__label {
  font-size: var(--text-sm);
  font-weight: var(--weight-light);
  color: var(--color-text-muted);
}

/* Quote / pull quote */
.cs-quote {
  border-left: var(--border-4) solid var(--color-accent);
  margin: var(--space-3) 0;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-style: italic;
  font-weight: var(--weight-light);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

/* Feature / insight cards grid */
.cs-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5h);
  margin: var(--space-lg) 0;
}
.cs-card {
  background: var(--color-off-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.cs-card__img .cs-media-placeholder {
  aspect-ratio: 3 / 4;
  border-radius: 0;
  border: none;
}
.cs-card__img .cs-gif-container {
  border-radius: 0;
}
.cs-card__body {
  padding: var(--space-md);
}
.cs-card h4 {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.cs-card p {
  font-size: var(--text-sm);
  font-weight: var(--weight-light);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  margin: 0;
}

/* Bullet list */
.cs-list {
  list-style: none;
  padding: 0;
  margin: var(--space-sm) 0 var(--space-md);
}
.cs-list li {
  font-size: var(--text-md);
  font-weight: var(--weight-light);
  color: var(--color-text-muted);
  line-height: var(--leading-loose);
  padding-left: var(--space-5q);
  position: relative;
  margin-bottom: var(--space-2);
}
.cs-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* Numbered step rows */
.cs-steps { margin: var(--space-lg) 0; }
.cs-step {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-top: var(--border-1) solid var(--color-border);
  align-items: center;
}
.cs-step__num {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-widest);
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--space-2);
}
.cs-step h3 { margin-bottom: var(--space-2); }
.cs-step p  { margin-bottom: 0; }
.cs-step__media { margin: 0; }

/* Media / image block */
.cs-media {
  margin: var(--space-lg) 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}
.cs-media img {
  width: 100%;
  display: block;
  border-radius: var(--radius-md);
}
.cs-media figcaption {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  text-align: center;
  font-style: italic;
}
.cs-step-img-box--portrait {
  align-items: center;
  justify-content: center;
  padding-bottom: 0;
}
.cs-step-img-box--portrait img {
  max-width: 92%;
  width: 92%;
  height: auto;
  max-height: none;
  border-radius: 0;
  border: none;
}

.cs-step-img-box--wide {
  display: block;
  position: relative;
  padding: 0;
  aspect-ratio: 2.43;
}
.cs-step-img-box--wide img {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 75%;
  max-width: 75%;
  height: auto;
  border: none;
  border-radius: 0;
}

/* Flex variant for bottom-aligned images that need top padding */
.cs-step-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border: none;
  border-radius: 0;
}

.cs-step-img-box--wide-flex {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: var(--space-16) var(--space-md) 0;
  aspect-ratio: unset;
  min-height: 560px;
  background: var(--color-off-white);
  border: var(--border-2) solid var(--color-border-dark);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.cs-step-img-box--wide-flex img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  border: none;
  border-radius: 0;
}

.cs-img-frame {
  background: var(--color-off-white);
  border: var(--border-1) solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.cs-img-frame img {
  width: 100%;
  display: block;
}

.cs-img-placeholder {
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-off-white);
  border: var(--border-1) solid var(--color-border);
  border-radius: var(--radius-md);
}

.cs-step-img-box.cs-img-placeholder {
  min-height: 400px;
}

.cs-img-placeholder__label {
  font-size: var(--text-2xs);
  font-weight: var(--weight-regular);
  color: var(--color-placeholder);
  letter-spacing: var(--tracking-wide);
}

.cs-img-placeholder--tall {
  min-height: 480px;
}

.cs-2col-imgs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.cs-2col-imgs .cs-img-frame {
  height: 380px;
  overflow: hidden;
}

.cs-2col-imgs .cs-img-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.cs-2col-imgs .cs-img-frame:first-child img {
  object-position: left top;
}

@media (max-width: 640px) {
  .cs-2col-imgs { grid-template-columns: 1fr; }
  .cs-2col-imgs .cs-img-frame { height: 280px; }
}

.cs-2col-text {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 var(--space-11);
  margin-bottom: var(--space-md);
}

.cs-2col-text p {
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .cs-2col-text {
    grid-template-columns: 1fr;
  }
}

.cs-media-placeholder {
  width: 100%;
  aspect-ratio: 16 / 7;
  background: var(--color-off-white);
  border: var(--border-1) dashed var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
  padding: var(--space-md);
  box-sizing: border-box;
}

/* Closing cloud decoration */
.cs-closing-cloud {
  padding-top: var(--space-xl);
}
.cs-closing-cloud img {
  display: block;
  margin: 0 auto;
  width: 220px;
  opacity: 0.85;
}

@media (max-width: 768px) {
  .cs-hero__split { grid-template-columns: 1fr; gap: var(--space-lg); }
  .cs-hero__right { order: -1; }
  .cs-split { grid-template-columns: 1fr; gap: var(--space-lg); }
  .cs-media-row { grid-template-columns: 1fr; }
  .cs-gif-container--row { flex-direction: column; }
  .cs-gif-container--row img { max-width: 80%; }
  .cs-ideation-container { flex-direction: column; }
  .cs-ideation-container img { width: 80%; }
  .cs-iter-row--swap .cs-split__right { order: -1; }
  .cs-style-phones { flex-direction: column; align-items: center; }
  .cs-style-phones img { height: auto; width: 80%; max-width: 320px; }
}

@media (max-width: 640px) {
  .cs-meta { gap: var(--space-8); }
  .cs-meta--cards { grid-template-columns: 1fr 1fr; }
  .cs-stats { grid-template-columns: 1fr; }
  .cs-cards { grid-template-columns: 1fr; }
  .cs-step  { grid-template-columns: 1fr; }
  .cs-step__media { margin: var(--space-sm) 0 0; }
}