/* amplio.css — Amplio case study page styles.
   All values come from the design tokens in styles.css (source of
   truth: DESIGN_SYSTEM.md). No hardcoded colors/sizes/spacing/radius. */

.case-page {
  background: var(--color-bg);
  scroll-behavior: smooth;
}

/* ── Scroll progress bar ─────────────────────────────────────── */
.case-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--space-1);
  z-index: 1100;
  background: var(--surface-veil);
}

.case-progress__bar {
  height: 100%;
  width: 100%;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left center;
  will-change: transform;
}

/* ── Left rail: back link + section tracker + back to top ───── */
.case-rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  padding: var(--space-12) 0 var(--space-12) var(--space-8);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  background: var(--surface-veil);
  backdrop-filter: blur(10px);
}

.case-rail__back {
  font-family: var(--font-sans);
  font-size: var(--fs-supporting);
  line-height: var(--lh-snug);
  letter-spacing: 0.08em;
  color: var(--color-text-primary);
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.2s ease;
}

.case-rail__back:hover {
  opacity: 0.7;
}

.case-rail__toc {
  list-style: none;
  margin: auto 0; /* vertically centers the tracker between back/top */
  padding: var(--space-8) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  overflow-y: auto;
  scrollbar-width: none;
}

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

.case-rail__toc a {
  font-family: var(--font-sans);
  font-size: var(--fs-caption);
  line-height: var(--lh-caption);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, opacity 0.2s ease;
}

.case-rail__toc a:hover {
  color: var(--color-text-primary);
}

/* Reached section: tech-green with a leading dot */
.case-rail__toc a.is-active {
  color: var(--color-accent);
  position: relative;
}

.case-rail__toc a.is-active::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-4));
  top: 50%;
  transform: translateY(-50%);
  width: var(--space-1);
  height: var(--space-1);
  border-radius: var(--radius-round);
  background: var(--color-accent);
}

/* Mobile-only slim bar (rail is hidden on small screens) */
.case-mobile-bar {
  display: none;
}

/* ── Main column ─────────────────────────────────────────────── */
.case-main {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: var(--space-16) var(--space-6) var(--space-24);
}

/* Reading column narrower than media breaks (per Figma layout) */
.case-section {
  max-width: var(--case-text-width);
  margin: 0 auto var(--space-24);
  scroll-margin-top: var(--space-16);
}

/* Wide media breaks out of the reading column */
.case-wide {
  max-width: var(--content-max-width);
  margin-left: auto;
  margin-right: auto;
}

/* ── Hero ────────────────────────────────────────────────────── */
/* Media corners match the Home page project thumbnails (--radius-md) */
.case-hero {
  margin: 0 auto var(--space-16);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
}

.case-hero img {
  display: block;
  width: 100%;
  aspect-ratio: var(--ratio-case-media);
  object-fit: cover;
}

/* ── Type styles ─────────────────────────────────────────────── */
.case-overline {
  font-family: var(--font-sans);
  font-size: var(--fs-caption);
  line-height: var(--lh-caption);
  font-weight: var(--fw-regular);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.case-title {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  line-height: var(--lh-h1);
  font-weight: var(--fw-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-6);
}

.case-heading {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  line-height: var(--lh-h2);
  font-weight: var(--fw-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-6);
}

.case-subheading {
  font-family: var(--font-sans);
  font-size: var(--fs-h3);
  line-height: var(--lh-h3);
  font-weight: var(--fw-semibold);
  color: var(--color-text-primary);
  margin: var(--space-8) 0 var(--space-3);
}

.case-body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-base);
  font-weight: var(--fw-regular);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.case-em {
  color: var(--color-text-primary);
  font-weight: var(--fw-semibold);
}

/* Standout single-line statements (pull quotes / key phrases) */
.case-callout {
  font-family: var(--font-sans);
  font-size: var(--fs-h3);
  line-height: var(--lh-snug);
  font-weight: var(--fw-medium);
  color: var(--color-text-primary);
  border-left: 2px solid var(--color-text-secondary);
  padding: var(--space-2) 0 var(--space-2) var(--space-6);
  margin: var(--space-8) 0;
}

/* Big standalone statement (User Problem) */
.case-statement {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  line-height: var(--lh-snug);
  font-weight: var(--fw-medium);
  color: var(--color-text-primary);
}

.case-list {
  list-style: none;
  margin: 0 0 var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.case-list li {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-snug);
  color: var(--color-text-secondary);
  padding-left: var(--space-6);
  position: relative;
}

.case-list li::before {
  content: '';
  position: absolute;
  left: var(--space-1);
  top: 0.55em;
  width: var(--space-2);
  height: var(--space-1);
  border-radius: var(--radius-pill);
  background: var(--color-accent);
}

/* ── Overview meta grid ──────────────────────────────────────── */
.case-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-8) var(--space-6);
  margin: var(--space-8) 0 var(--space-12);
}

.case-meta__label {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-snug);
  font-weight: var(--fw-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.case-meta__value {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-snug);
  font-weight: var(--fw-regular);
  color: var(--color-text-secondary);
}

/* ── Impact stat cards ───────────────────────────────────────── */
/* Three equal cards; the 40% card leads through its oversized number,
   reading order: 40% faster → 100+ components → 150+ screens */
.case-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.case-stat {
  background: var(--color-surface);
  border: 1px solid var(--glass-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}

.case-stat__number {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  line-height: var(--lh-h1);
  font-weight: var(--fw-medium);
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

/* Supporting stat on the 40% card — same scale as the card titles */
.case-stat__support {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-snug);
  font-weight: var(--fw-regular);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.case-stat__title {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: var(--fw-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.case-stat__desc {
  font-family: var(--font-sans);
  font-size: var(--fs-supporting);
  line-height: var(--lh-snug);
  color: var(--color-text-secondary);
}

/* ── Ecosystem flow ──────────────────────────────────────────── */
.case-flow {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-8) auto;
}

.case-flow__step {
  flex: 1;
  background: var(--color-surface);
  border: 1px solid var(--glass-bg);
  border-radius: var(--radius-md);
  padding: var(--space-6) var(--space-4);
  text-align: center;
  font-family: var(--font-sans);
  font-size: var(--fs-supporting);
  font-weight: var(--fw-semibold);
  color: var(--color-text-primary);
}

.case-flow__step--focus {
  border-color: var(--color-accent);
}

.case-flow__arrow {
  color: var(--color-accent);
  font-size: var(--fs-body);
  flex-shrink: 0;
}

/* ── Media & placeholders ────────────────────────────────────── */
.case-media {
  margin: var(--space-8) auto;
}

.case-media-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
  margin: var(--space-8) auto;
}

.case-media-grid figure {
  margin: 0;
}

/* Real media inside case figures — same frame as the placeholders.
   Full image shown (no crop); videos autoplay muted on a loop. */
.case-media img,
.case-media video,
.case-media-grid img,
.case-media-grid video {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-bg);
  background: var(--color-surface);
}

/* Clicking any photo/video/placeholder opens the lightbox (amplio.js) */
.case-hero img,
.case-media img,
.case-media video,
.case-media-grid img,
.case-media-grid video,
.case-placeholder__box {
  cursor: zoom-in;
}

.case-placeholder__box {
  aspect-ratio: var(--ratio-case-media);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px dashed var(--glass-border);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: var(--fs-supporting);
  color: var(--color-text-secondary);
}

.case-caption {
  font-family: var(--font-sans);
  font-size: var(--fs-caption);
  line-height: var(--lh-snug);
  color: var(--color-text-secondary);
  margin-top: var(--space-3);
  text-align: center;
}

.case-caption strong {
  color: var(--color-text-primary);
  font-weight: var(--fw-semibold);
}

/* ── Validation comparison bars ──────────────────────────────── */
.case-compare {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin: var(--space-12) 0;
}

.case-compare__label {
  font-family: var(--font-sans);
  font-size: var(--fs-supporting);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.case-compare__track {
  background: var(--surface-veil);
  border-radius: var(--radius-pill);
  overflow: hidden;
}

.case-compare__bar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-size: var(--fs-supporting);
  font-weight: var(--fw-semibold);
}

/* Bar lengths encode the 15 min vs 9 min result (9/15 = 60%) */
.case-compare__bar--legacy {
  width: 100%;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--glass-bg);
}

.case-compare__bar--redesign {
  width: 60%;
  background: var(--color-accent);
  color: var(--color-bg);
}

/* ── Testimonial: quote left, linked photo right ─────────────── */
.case-testimonial {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-8);
  align-items: start;
  margin-top: var(--space-8);
}

.case-testimonial__quote {
  margin: 0;
  border-left: 2px solid var(--color-text-secondary);
  padding-left: var(--space-6);
}

.case-testimonial__text {
  margin: 0 0 var(--space-6);
  font-family: var(--font-sans);
  font-size: var(--fs-h3);
  line-height: var(--lh-snug);
  font-weight: var(--fw-medium);
  color: var(--color-text-primary);
}

.case-testimonial__cite {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  font-style: normal;
}

.case-testimonial__name {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: var(--fw-semibold);
  color: var(--color-text-primary);
}

.case-testimonial__role,
.case-testimonial__org {
  font-family: var(--font-sans);
  font-size: var(--fs-supporting);
  line-height: var(--lh-snug);
  color: var(--color-text-secondary);
}

.case-testimonial__media {
  display: block;
  text-decoration: none;
}

/* Show the whole image — no crop, so the column follows its ratio */
.case-testimonial__media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-bg);
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.case-testimonial__media:hover img {
  border-color: var(--color-accent);
}

.case-testimonial__link {
  display: block;
  margin-top: var(--space-3);
  font-family: var(--font-sans);
  font-size: var(--fs-supporting);
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
}

.case-testimonial__media:hover .case-testimonial__link {
  color: var(--color-accent);
}

/* ── Reflection lessons: two columns, top-aligned ────────────── */
.case-lessons {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-8);
  margin: var(--space-8) 0;
  align-items: start;
}

/* The first subheading in each column sits flush with the row top */
.case-lesson .case-subheading {
  margin-top: 0;
}

.case-lesson .case-body:last-child {
  margin-bottom: 0;
}

/* ── End-of-page back-to-top arrow (right side of the content) ── */
.case-end {
  max-width: var(--case-text-width);
  margin: 0 auto;
  display: flex;
  justify-content: flex-end;
}

.case-to-top {
  width: var(--space-12);
  height: var(--space-12);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-round);
  color: var(--color-text-primary);
  transition: background 0.2s ease, transform 0.2s ease;
}

.case-to-top:hover {
  background: var(--glass-bg-strong);
  transform: translateY(calc(-1 * var(--space-1)));
}

.case-to-top svg {
  width: var(--space-6);
  height: var(--space-6);
}

/* ── Lightbox: enlarged media view ───────────────────────────── */
/* display:flex below beats the UA's [hidden]{display:none}, so the
   closed state must be restated explicitly — without this the invisible
   overlay covers the page and swallows every click */
.case-lightbox[hidden] {
  display: none;
}

.case-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  background: var(--color-scrim);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  opacity: 0;
  transition: opacity var(--duration-page) ease;
}

.case-lightbox.is-open {
  opacity: 1;
}

.case-lightbox__content {
  transform: scale(0.92);
  transition: transform var(--duration-page) ease;
  max-width: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-lightbox.is-open .case-lightbox__content {
  transform: scale(1);
}

.case-lightbox__media {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: var(--radius-md);
  object-fit: contain;
  cursor: default;
}

/* Enlarged placeholder blocks keep their shape at lightbox size */
.case-lightbox__media.case-placeholder__box {
  width: min(90vw, var(--content-max-width));
  height: auto;
}

.case-lightbox__close {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  width: var(--space-12);
  height: var(--space-12);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-round);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: background 0.2s ease;
}

.case-lightbox__close:hover {
  background: var(--glass-bg-strong);
}

.case-lightbox__close svg {
  width: var(--space-6);
  height: var(--space-6);
}

/* ── Rail clearance: keep content clear of the fixed rail ────── */
@media (min-width: 1101px) {
  .case-main {
    padding-left: calc(var(--sidebar-width) + var(--space-8));
    padding-right: var(--space-8);
  }
}

/* Tablet: rail becomes tighter, content keeps clearance */
@media (min-width: 769px) and (max-width: 1100px) {
  .case-rail {
    padding-left: var(--space-6);
  }

  .case-main {
    padding-left: calc(var(--sidebar-width) + var(--space-6));
    padding-right: var(--space-6);
  }
}

/* ── Mobile ──────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .case-rail {
    display: none;
  }

  .case-mobile-bar {
    display: block;
    position: fixed;
    top: var(--space-1); /* clears the progress bar */
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-bg);
    padding: var(--space-4);
  }

  .case-main {
    padding: var(--space-16) var(--space-4) var(--space-16);
  }

  .case-section {
    margin-bottom: var(--space-16);
  }

  .case-meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .case-flow {
    flex-direction: column;
    align-items: stretch;
  }

  .case-flow__arrow {
    transform: rotate(90deg);
    text-align: center;
    align-self: center;
  }

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

  .case-lessons {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .case-testimonial {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .case-statement {
    font-size: var(--fs-h3);
  }
}