/* Editorial case-study layout for service-business owners.
   DESIGN_VARIANCE: 6; MOTION_INTENSITY: 4; VISUAL_DENSITY: 3.
   Preserves SemDev's existing brand and uses real project screenshots. */
.case-study {
  --case-space: clamp(4.5rem, 8vw, 7rem);
  --case-surface: linear-gradient(135deg, #102033, #0d1a2a 45%, #0b1624);
  --case-shadow: 0 18px 40px -24px rgb(0 0 0 / 65%);
  --case-card-padding: clamp(1.75rem, 3.5vw, 2.75rem);
  background: var(--ink);
}

.case-study main > section {
  padding: var(--case-space) 1.25rem;
}

.case-study main h1 {
  font-size: clamp(2.15rem, 4.2vw, 3.5rem);
  line-height: 1.08;
}

.case-study main h2 {
  max-width: 22ch;
  font-size: clamp(2rem, 3.4vw, 3.25rem);
  line-height: 1.08;
}

.case-study main h3 {
  font-size: clamp(1.2rem, 1.7vw, 1.4rem);
  line-height: 1.2;
}

.case-study main :is(h1, h2, h3) {
  letter-spacing: -0.035em;
  text-wrap: balance;
  overflow-wrap: anywhere;
}

.case-study main .brand-accent { text-shadow: none; }

.case-study main :is(.case-hero__layout, .case-brief__layout, .case-detail__layout, .case-results__layout, .case-feedback__layout) > * {
  min-width: 0;
}

.case-study main section[id] { scroll-margin-top: 7rem; }

.case-study main p {
  line-height: 1.7;
}

.case-study a:not(.cta-button):not(.button) {
  text-underline-offset: 0.25em;
}

.case-copy > * + * {
  margin-top: var(--space-sm);
}

.case-copy > p {
  max-width: 64ch;
}

.case-inline-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--brand);
  transition: color 0.3s ease;
}

.case-inline-link:hover {
  color: var(--white);
}

.case-label {
  margin-bottom: var(--space-sm);
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.case-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: var(--space-smmd);
}

.case-study .cta-button {
  font-size: 1rem;
}

/* Opening project view */
.case-study main > .case-hero {
  padding-top: calc(var(--header-height) + 2.5rem);
  padding-bottom: 3rem;
  background: radial-gradient(ellipse at 8% 42%, rgb(25 200 255 / 4%), transparent 44%), var(--ink);
}

.case-breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  list-style: none;
  margin-bottom: var(--space-smmd);
  font-size: 0.85rem;
}

.case-breadcrumbs li {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--muted);
}

.case-breadcrumbs li + li::before {
  content: "/";
  padding-right: 0.6rem;
  color: var(--muted);
}

.case-breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.3s ease;
}

.case-breadcrumbs a:hover {
  color: var(--brand);
}

.case-hero__layout {
  display: grid;
  gap: var(--space-smmd);
  align-items: center;
}

.case-hero__intro {
  margin-top: var(--space-sm);
  max-width: 42ch;
  font-size: clamp(1rem, 1.3vw, 1.1rem);
}

.case-stage {
  min-width: 0;
}
.case-stage__mockup {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0;
  padding: 0;
  background: transparent;
}

/* Results summary, separate from the hero */
.case-study main > .case-summary {
  padding-top: 2rem;
  padding-bottom: 2.5rem;
}

.case-summary__metrics {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  padding: 2rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.case-summary__metrics dt {
  color: var(--brand);
  font-family: var(--headerFont);
  font-weight: 600;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.035em;
}

.case-summary__metrics dd {
  margin-top: 0.6rem;
  font-size: 1rem;
  color: var(--text);
}

.case-summary__note {
  margin-top: var(--space-sm);
  color: var(--muted);
  font-size: 0.95rem;
}

/* A single reported outcome, with its attribution kept alongside it. */
.case-outcome {
  display: grid;
  gap: 1.5rem;
  align-items: center;
  padding-block: 2rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.case-study main .case-outcome__number {
  color: var(--brand);
  font-family: var(--headerFont);
  font-size: clamp(4rem, 9vw, 7rem);
  font-weight: 600;
  line-height: 1;
}

.case-outcome__title {
  margin-bottom: 0.5rem;
  color: var(--white);
  font-size: 1.2rem;
  font-weight: 600;
}

.case-outcome > div {
  max-width: 50ch;
}

.case-evidence-note {
  color: var(--muted);
  font-size: 0.9rem;
}

/* The brief and its local audience */
.case-brief {
  background: #08101b;
}

.case-brief__layout {
  display: grid;
  gap: var(--space-md);
}

.case-facts {
  display: grid;
  align-content: start;
  gap: 1.5rem;
  padding: var(--case-card-padding);
  border: 0;
  border-radius: 16px;
  background: var(--case-surface);
  box-shadow: var(--case-shadow);
}

.case-facts > div + div {
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.case-facts dt {
  color: var(--muted);
  font-size: 0.85rem;
}

.case-facts dd {
  margin-top: 0.4rem;
  color: var(--white);
  font-size: 1rem;
  line-height: 1.6;
}

/* Real website imagery, kept legible and available at full resolution */
.case-figure {
  min-width: 0;
  margin: 0;
}

.case-figure__canvas {
  display: block;
  padding: 0;
  overflow: hidden;
  border-radius: 16px;
  background: transparent;
  transition: box-shadow 350ms ease;
}

.case-figure__canvas img {
  width: 100%;
  display: block;
  border-radius: inherit;
}

.case-figure figcaption {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.case-design__image {
  margin-top: var(--space-smmd);
}

.case-comparison {
  display: grid;
  gap: 2rem;
  margin-top: var(--space-smmd);
}

.case-comparison__viewport {
  aspect-ratio: 1440 / 1000;
}

.case-comparison__label {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  margin-bottom: 1rem;
}

.case-study main .case-comparison__label h3 {
  font-size: clamp(1.4rem, 2.3vw, 1.8rem);
}

.case-comparison__label p {
  color: var(--muted);
  font-size: 0.95rem;
}

.case-comparison__label--after h3 {
  color: var(--brand);
}

.case-comparison__viewport img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.case-decisions {
  display: grid;
  gap: 2rem;
  margin-top: var(--space-smmd);
  padding: var(--case-card-padding);
  border-radius: 16px;
  background: var(--case-surface);
  box-shadow: var(--case-shadow);
}

.case-decisions > div + div {
  border-top: 1px solid var(--line);
  padding-top: 1.75rem;
}

.case-decisions p {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Treatment information and the route to an enquiry */
.case-detail {
  background: #08101b;
}

.case-detail__layout {
  display: grid;
  align-items: start;
  gap: var(--space-smmd);
}

.case-detail__copy {
  align-self: center;
}

.case-journey__visuals {
  display: grid;
  gap: var(--space-sm);
  align-items: start;
  margin-top: var(--space-smmd);
}

.case-journey__visuals .case-figure__canvas {
  padding: 0;
}

.case-journey__form {
  max-width: 22rem;
  margin-inline: auto;
}

/* Phone screenshots show the actual social landing-page journey. */
.case-flow {
  display: grid;
  gap: 2rem;
  align-items: start;
  margin-top: var(--space-smmd);
}

.case-flow__screen {
  width: 100%;
  max-width: 24rem;
  margin-inline: auto;
}

.case-flow__link {
  margin-top: 2rem;
}

/* Evidence and measured results */
.case-results {
  background: #08101b;
}

.case-results__layout {
  display: grid;
  align-items: start;
  gap: var(--space-smmd);
  margin-top: var(--space-smmd);
}

.case-results__figure a {
  display: block;
  padding: 0;
  border-radius: 16px;
  background: transparent;
}

.case-results__figure img {
  width: 100%;
  display: block;
  border-radius: inherit;
}

.case-results__detail {
  border: 0;
  padding: var(--case-card-padding);
  border-radius: 16px;
  background: var(--case-surface);
  box-shadow: var(--case-shadow);
  color: var(--muted);
  font-size: 0.95rem;
}

.case-results__detail p + p {
  margin-top: var(--space-sm);
}

.case-results__detail strong {
  color: var(--white);
}

.case-performance {
  margin-top: var(--space-lg);
  padding: var(--case-card-padding);
  border-radius: 16px;
  background: var(--case-surface);
  box-shadow: var(--case-shadow);
}

.case-performance__scores {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem 4rem;
  margin-top: var(--space-smmd);
}

.case-performance__scores dt {
  font-family: var(--headerFont);
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1;
  font-weight: 600;
  color: var(--brand);
  font-variant-numeric: tabular-nums;
}

.case-performance__scores dd {
  margin-top: 0.7rem;
  color: var(--text);
}

.case-performance__note {
  max-width: 70ch;
  margin-top: var(--space-sm);
  color: var(--muted);
  font-size: 0.9rem;
}

/* Client experience */
.case-feedback__layout {
  display: grid;
  gap: var(--space-md);
  align-items: start;
}

.case-feedback blockquote p {
  max-width: none;
  color: var(--white);
  font-family: var(--headerFont);
  font-size: clamp(1.25rem, 1.7vw, 1.65rem);
  line-height: 1.4;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.case-feedback figure {
  margin: 0;
  padding: var(--case-card-padding);
  border-radius: 16px;
  background: var(--case-surface);
  box-shadow: var(--case-shadow);
}

.case-feedback figcaption {
  margin-top: var(--space-sm);
  color: var(--brand);
  font-size: 1rem;
}

.case-feedback figcaption span {
  display: block;
  color: var(--muted);
}

/* Match the shared homepage close without double-insetting its shell. */
.case-study main > .final-cta { padding-inline: 0; }
.case-study .final-actions { gap: 1rem; }
.case-study .final-actions .button-ghost {
  justify-content: center;
  gap: 8px;
  padding: 0.625rem 1rem;
}
.case-study .button-avatar {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

@media (hover: hover) and (pointer: fine) {
  .case-figure__canvas:hover { box-shadow: 0 12px 28px -18px rgb(0 0 0 / 75%); }
  .case-decisions > div h3 { transition: color 300ms ease; }
  .case-decisions > div:hover h3 { color: var(--brand); }
}

/* Every multi-column composition has an explicit small-screen fallback. */
@media (min-width: 768px) {
  .case-outcome {
    grid-template-columns: auto 1fr;
    column-gap: 3rem;
  }

  .case-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .case-hero__layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 3rem;
  }

  .case-brief__layout,
  .case-feedback__layout {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 5rem;
  }

  .case-decisions {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .case-decisions > div + div {
    border-top: 0;
    border-left: 1px solid var(--line);
    padding-top: 0;
    padding-left: 2rem;
  }

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

  .case-detail__layout {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 4rem;
  }

  .case-journey__visuals {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 0.65fr);
    gap: 2rem;
  }

  .case-results__layout {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.7fr);
    gap: 3rem;
  }
}

@media (max-width: 767px) {
  .case-summary__metrics {
    column-gap: 1rem;
  }

  .case-summary__metrics dd {
    font-size: 0.95rem;
    line-height: 1.5;
  }

  .case-study .case-hero__intro {
    font-size: 1rem;
  }

  .case-hero .case-actions .cta-button {
    width: 100%;
  }

  .case-journey__form {
    width: min(100%, 19rem);
    margin-top: 1.5rem;
  }
}

@media (max-width: 359px) {
  .case-summary__metrics {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .case-hero__copy {
    animation: case-enter 600ms var(--ease) both;
  }

  @keyframes case-enter {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
  }
}