/* Case study — premium portfolio layout */

.case-stats {
  padding: 48px var(--container-padding);
  background: var(--color-primary);
  color: #fff;
}

.case-stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: var(--container-max);
  margin: 0 auto;
}

.case-stats__item {
  text-align: center;
  padding: 20px 12px;
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: background var(--transition), transform var(--transition);
}

.case-stats__item:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.case-stats__value {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  color: #fff;
}

.case-stats__label {
  display: block;
  margin-top: 10px;
  font-size: 0.8125rem;
  line-height: 1.45;
  color: rgba(255, 255, 255, 0.72);
  font-weight: 500;
}

.case-stats__item.reveal--visible .case-stats__value {
  animation: case-stat-pop 0.55s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes case-stat-pop {
  0% {
    opacity: 0;
    transform: scale(0.88);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.case-section__intro {
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}

.case-strategy__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 28px;
}

.case-strategy__card {
  padding: 24px 22px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
}

.case-section--surface .case-strategy__card {
  background: var(--color-surface);
}

.case-strategy__name {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.case-strategy__desc {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--color-muted);
}

.case-ux__principles {
  list-style: none;
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.case-ux__principles li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--color-primary);
}

.case-ux__principles li::before {
  content: "";
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  background: var(--color-accent);
  border-radius: 50%;
}

.case-solution__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
  margin-top: 28px;
}

.case-solution__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.case-solution__list li {
  display: flex;
  gap: 14px;
  padding: 18px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-button);
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-primary);
}

.case-solution__list li strong {
  display: block;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-accent);
  min-width: 72px;
}

.case-outcome__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 28px;
}

.case-outcome__card {
  padding: 28px 24px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
  text-align: center;
}

.case-section--surface .case-outcome__card {
  background: var(--color-surface);
}

.case-outcome__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(124, 58, 237, 0.08);
  color: var(--color-accent);
  margin-bottom: 16px;
}

.case-outcome__icon svg {
  width: 22px;
  height: 22px;
  display: block;
}

.case-outcome__title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.case-outcome__text {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--color-muted);
}

.case-ui__frame {
  margin-top: 28px;
  border-radius: var(--radius-mockup);
  border: 1px solid var(--color-border);
  background: #1a1a1a;
  padding: 14px 14px 0;
  box-shadow: var(--shadow-mockup);
  overflow: hidden;
}

.case-ui__frame.reveal--visible {
  animation: case-mockup-rise 0.75s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes case-mockup-rise {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.case-ui__frame img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px 10px 0 0;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top;
}

.case-ui__frame::after {
  content: "";
  display: block;
  height: 12px;
  background: #2a2a2a;
  border-radius: 0 0 8px 8px;
  margin: 0 -14px;
}

.case-mockup-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 28px;
}

.case-mockup-row .case-ui__frame {
  margin-top: 0;
}

.case-responsive__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  margin-top: 28px;
}

.case-responsive__text p + p {
  margin-top: 16px;
}

.case-responsive__preview {
  border-radius: var(--radius-mockup);
  border: 1px solid var(--color-border);
  background: #1a1a1a;
  padding: 10px 10px 0;
  box-shadow: var(--shadow-soft);
  max-width: 360px;
  margin-left: auto;
  margin-right: auto;
}

.case-responsive__preview.reveal--visible {
  animation: case-mockup-rise 0.75s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.case-responsive__preview img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px 8px 0 0;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top;
}

.case-responsive__preview::after {
  content: "";
  display: block;
  height: 10px;
  background: #2a2a2a;
  border-radius: 0 0 6px 6px;
  margin: 0 -10px;
}

.case-responsive__caption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--color-muted);
  text-align: center;
}

.case-learned {
  border-top: 1px solid var(--color-border);
}

.case-learned__list {
  list-style: none;
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.case-learned__list li {
  position: relative;
  padding-left: 20px;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--color-muted);
}

.case-learned__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

.case-collab__facts {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.case-collab__row {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 12px 20px;
  padding: 16px 20px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-button);
}

.case-section--surface .case-collab__row {
  background: var(--color-surface);
}

.case-collab__row dt {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-accent);
}

.case-collab__row dd {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--color-muted);
}

.case-collab__note {
  margin-top: 14px;
  font-size: 0.8125rem;
  color: var(--color-muted);
}

.case-collab__link-wrap {
  margin-top: 20px;
}

.case-collab__link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-accent);
}

.case-collab__link:hover,
.case-collab__link:focus-visible {
  color: var(--color-primary);
}

.case-live__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 28px;
}

.case-sticky-cta {
  display: block;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  padding: 12px 24px calc(12px + env(safe-area-inset-bottom, 0));
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -4px 24px rgba(17, 24, 39, 0.08);
}

.case-page .footer {
  padding-bottom: calc(88px + env(safe-area-inset-bottom, 0));
}

.case-page .case-cta {
  padding-bottom: calc(88px + 48px + env(safe-area-inset-bottom, 0));
}

@media (max-width: 1024px) {
  .case-stats__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

@media (max-width: 768px) {
  .case-stats {
    padding: 32px var(--container-padding);
  }

  .case-stats__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--mobile-gap);
  }

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

  .case-responsive__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .case-responsive__preview {
    max-width: 100%;
  }

  .case-collab__row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .case-sticky-cta {
    padding: 12px 16px calc(12px + env(safe-area-inset-bottom, 0));
  }
}

@media (min-width: 769px) {
  .case-sticky-cta {
    left: auto;
    right: 24px;
    bottom: 24px;
    width: auto;
    max-width: 320px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    box-shadow: 0 8px 32px rgba(17, 24, 39, 0.12);
  }

  .case-sticky-cta .btn {
    width: 100%;
  }

  .case-page .footer {
    padding-bottom: 48px;
  }

  .case-page .case-cta {
    padding-bottom: 88px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .case-stats__item.reveal--visible .case-stats__value,
  .case-ui__frame.reveal--visible,
  .case-responsive__preview.reveal--visible {
    animation: none;
  }

  .case-stats__item:hover {
    transform: none;
  }
}

/* Consulting report layout */

.case-hero__type {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.case-report-meta {
  padding: 0 var(--container-padding) 48px;
  background: var(--color-bg);
}

.case-report-meta__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 24px 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
}

.case-report-meta__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.case-report-meta__key {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.case-report-meta__val {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.4;
}

.case-report-toc {
  padding: 0 var(--container-padding) 56px;
  background: var(--color-bg);
}

.case-report-toc__inner {
  max-width: 820px;
  margin: 0 auto;
  padding: 28px 32px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-surface);
}

.case-report-toc__title {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.case-report-toc__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.case-report-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition);
}

.case-report-toc__list li:last-child a {
  border-bottom: none;
}

.case-report-toc__list a:hover,
.case-report-toc__list a:focus-visible {
  color: var(--color-accent);
}

.case-report-toc__num {
  flex-shrink: 0;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  min-width: 1.5rem;
}

.case-finding {
  margin-top: 24px;
  padding: 22px 24px;
  background: rgba(124, 58, 237, 0.05);
  border: 1px solid rgba(124, 58, 237, 0.15);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-button);
}

.case-finding__label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.case-finding__text {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-primary);
}

.case-findings-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.case-findings-grid .case-finding {
  margin-top: 0;
}

.case-rationale__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 24px;
}

.case-rationale__item {
  padding: 22px 24px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
}

.case-section--surface .case-rationale__item {
  background: var(--color-surface);
}

.case-rationale__q {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.case-rationale__a {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.case-process {
  margin-top: 28px;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.case-process::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: var(--color-border);
}

.case-process__step {
  position: relative;
  padding: 0 0 28px 36px;
}

.case-process__step:last-child {
  padding-bottom: 0;
}

.case-process__step::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-bg);
  box-shadow: 0 0 0 1px var(--color-border);
}

.case-section--surface .case-process__step::before {
  border-color: var(--color-surface);
}

.case-process__when {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.case-process__name {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.case-process__desc {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.case-effect-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 28px;
}

.case-effect-col {
  padding: 24px;
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
}

.case-effect-col--before {
  background: var(--color-bg);
}

.case-effect-col--after {
  background: rgba(124, 58, 237, 0.04);
  border-color: rgba(124, 58, 237, 0.2);
}

.case-effect-col__label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.case-effect-col--before .case-effect-col__label {
  color: var(--color-muted);
}

.case-effect-col--after .case-effect-col__label {
  color: var(--color-accent);
}

.case-effect-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.case-effect-col li {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-primary);
  padding-left: 16px;
  position: relative;
}

.case-effect-col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-muted);
}

.case-effect-col--after li::before {
  background: var(--color-accent);
}

.case-next__list {
  list-style: none;
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.case-next__list li {
  padding: 18px 22px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-button);
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--color-muted);
}

.case-section--surface .case-next__list li {
  background: var(--color-surface);
}

.case-next__list strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.case-appendix {
  padding-top: 0;
}

.case-appendix .case-ui__frame {
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 1024px) {
  .case-report-meta__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-findings-grid,
  .case-effect-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .case-report-meta {
    padding-bottom: 32px;
  }

  .case-report-meta__grid {
    grid-template-columns: 1fr 1fr;
    padding: 20px;
    gap: 14px;
  }

  .case-report-toc {
    padding-bottom: 40px;
  }

  .case-report-toc__inner {
    padding: 20px;
  }
}