/* Case / blog detail — /blog/{slug}/ */

:root {
  --color-pill-bg: #EAEFF2;
  --color-border-subtle-light: #E1E5E8;
}

.case-detail {
  overflow-x: clip;
}

.case-header {
  position: relative;
  padding: clamp(2rem, 5vw, 3.5rem) 0 clamp(1.75rem, 3.5vw, 2.35rem);
  background:
    radial-gradient(ellipse 58% 68% at 90% 10%, rgba(181, 0, 0, 0.07), transparent 55%),
    linear-gradient(165deg, #F7F9FB 0%, var(--color-bg-light) 50%, #E8EEF2 100%);
}

.case-header::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(140, 156, 163, 0.5), transparent);
}

.case-header__grid {
  align-items: start;
}

.case-header__copy {
  min-width: 0;
}

.case-header__visual {
  position: relative;
  margin: 0;
  width: 100%;
  max-width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 16px;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(181, 0, 0, 0.12), transparent 50%),
    linear-gradient(145deg, #d7dee3 0%, #eff2f5 55%, #cfd8de 100%);
  box-shadow: 0 12px 32px rgba(61, 79, 92, 0.1);
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
}

.case-header__visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.case-header__placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: rgba(61, 79, 92, 0.35);
}

.case-header__placeholder::after {
  content: "";
  position: absolute;
  inset: 18%;
  border: 1px solid rgba(61, 79, 92, 0.12);
  border-radius: 0.75rem;
  -webkit-transform: rotate(-6deg);
  transform: rotate(-6deg);
}

.top-nav-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  margin-bottom: 1.15rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--color-slate-muted);
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  transition: color 0.25s var(--ease);
}

.back-link__arrow {
  display: inline-block;
  transition: transform 0.25s var(--ease);
}

.back-link:hover,
.back-link:focus-visible {
  color: var(--color-accent-red);
  outline: none;
}

.back-link:hover .back-link__arrow,
.back-link:focus-visible .back-link__arrow {
  transform: translateX(-4px);
}

.badge {
  display: inline-flex;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  background: var(--color-accent-red-soft);
  color: var(--color-accent-red);
  border: 1px solid rgba(181, 0, 0, 0.12);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.badge--news {
  background: rgba(61, 79, 92, 0.08);
  color: var(--color-deep-steel);
  border-color: rgba(61, 79, 92, 0.14);
}

.badge--tips {
  background: rgba(140, 156, 163, 0.16);
  color: var(--color-deep-steel);
  border-color: rgba(140, 156, 163, 0.35);
}

.badge--featured {
  background: var(--color-accent-red, #B50000);
  color: var(--color-white, #FFFFFF);
  border-color: var(--color-accent-red, #B50000);
}

.case-title {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.8vw, 3rem);
  font-weight: 600;
  line-height: 1.15;
  color: var(--color-deep-steel);
  letter-spacing: -0.02em;
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  margin: 0 0 1.05rem;
  color: var(--color-slate-muted);
  font-size: 0.92rem;
}

.case-meta .dot {
  opacity: 0.7;
}

.case-meta .author {
  color: var(--color-slate-muted);
}

.case-lead {
  margin: 0;
  color: var(--color-text-main);
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 2vw, 1.15rem);
  font-weight: 500;
  line-height: 1.65;
}

.case-body {
  padding-top: clamp(1.75rem, 4vw, 2.75rem);
  padding-bottom: clamp(2.5rem, 6vw, 4rem);
  background: var(--color-bg-light);
}

.case-layout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: clamp(1.35rem, 3.5vw, 2.25rem);
  align-items: start;
}

.case-layout-grid.case-header__grid {
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 380px);
}

.case-content-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border-subtle-light);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(61, 79, 92, 0.05);
  padding: clamp(1.35rem, 3.2vw, 2.15rem);
  color: var(--color-text-main);
  line-height: 1.7;
}

.case-content-card.prose > * + * {
  margin-top: 1.15rem;
}

.case-content-card.prose p {
  margin: 0;
}

.case-content-card.prose h2,
.case-content-card.prose h3 {
  margin-top: 1.75rem;
  font-family: var(--font-display);
  color: var(--color-deep-steel);
  line-height: 1.25;
}

.case-content-card.prose a {
  color: var(--color-accent-red);
}

.case-content-card.prose img,
.case-header__visual img {
  cursor: zoom-in;
}

.case-content-card.prose img {
  display: block;
  width: 100%;
  height: auto;
  margin: 1.1rem 0;
  border-radius: 0.75rem;
  border: 1px solid var(--color-border-subtle-light);
}

.case-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: sticky;
  top: calc(var(--header-h) + 1rem);
}

.sidebar-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border-subtle-light);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(61, 79, 92, 0.05);
  padding: 1.2rem 1.25rem;
}

.sidebar-title {
  display: block;
  margin: 0 0 0.85rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-deep-steel);
}

.share-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.share-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: var(--color-pill-bg);
  color: var(--color-deep-steel);
  font-weight: 600;
  font-size: 0.88rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition:
    transform 0.22s var(--ease),
    background-color 0.22s var(--ease),
    color 0.22s var(--ease),
    box-shadow 0.22s var(--ease);
}

.share-pill:hover,
.share-pill:focus-visible,
.share-pill:active {
  transform: translateY(-2px);
  background: var(--color-accent-red, #B50000);
  color: var(--color-white, #FFFFFF);
  outline: none;
  box-shadow: 0 8px 18px rgba(181, 0, 0, 0.22);
  text-decoration: none;
}

.cta-desc {
  margin: 0 0 1.1rem;
  color: var(--color-muted-text);
  font-size: 0.95rem;
  line-height: 1.55;
}

.btn-cta-primary {
  position: relative;
  appearance: none;
  -webkit-appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 48px;
  padding: 0.8rem 1.25rem;
  border: 0;
  border-radius: 999px;
  background: var(--color-accent-red, #B50000);
  color: var(--color-white, #FFFFFF);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  overflow: hidden;
  box-shadow: var(--shadow-btn-red, 0 8px 20px rgba(181, 0, 0, 0.28));
  transition:
    transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  -webkit-tap-highlight-color: rgba(181, 0, 0, 0.14);
}

.btn-cta-primary__label {
  position: relative;
  z-index: 1;
  color: var(--color-white, #FFFFFF);
}

.btn-cta-primary__ripple {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--rx, 50%) var(--ry, 50%), rgba(255, 255, 255, 0.35), transparent 55%);
  opacity: 0;
  transform: scale(0.6);
  pointer-events: none;
}

.btn-cta-primary:focus-visible {
  background: var(--color-accent-red-hover, #DC2626);
  color: var(--color-white, #FFFFFF);
  outline: none;
}

.btn-cta-primary:active {
  background: var(--color-accent-red-hover, #DC2626);
  color: var(--color-white, #FFFFFF);
  transform: translateY(-2px) scale(0.98);
  box-shadow: 0 6px 16px -4px var(--color-accent-red-glow, rgba(220, 38, 38, 0.4));
  outline: none;
}

@media (hover: hover) and (pointer: fine) {
  .btn-cta-primary:hover {
    background: var(--color-accent-red-hover, #DC2626);
    color: var(--color-white, #FFFFFF);
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-btn-red-hover, 0 10px 25px -5px rgba(220, 38, 38, 0.4));
    outline: none;
  }
}

.btn-cta-primary:hover .btn-cta-primary__label,
.btn-cta-primary:focus-visible .btn-cta-primary__label,
.btn-cta-primary:active .btn-cta-primary__label {
  color: var(--color-white, #FFFFFF);
}

.btn-cta-primary:active .btn-cta-primary__ripple,
.btn-cta-primary.is-rippling .btn-cta-primary__ripple {
  opacity: 1;
  transform: scale(1.35);
  transition: opacity 0.35s var(--ease), transform 0.45s var(--ease);
}

@media (max-width: 991.98px) {
  .case-layout-grid,
  .case-layout-grid.case-header__grid {
    grid-template-columns: 1fr;
  }

  .case-header__grid {
    gap: 1.25rem;
  }

  .case-header__visual {
    max-width: 28rem;
    margin-inline: auto;
  }

  .case-sidebar {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
  }
}

@media (max-width: 767.98px) {
  .case-sidebar {
    grid-template-columns: 1fr;
  }

  .case-content-card {
    padding: 1.15rem;
  }

  .case-header__visual {
    max-width: none;
    border-radius: 12px;
  }

  .share-pill:hover {
    transform: none;
  }
}

@supports (-webkit-touch-callout: none) {
  .case-header__visual {
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
  }
}

@media (prefers-reduced-motion: reduce) {
  .back-link__arrow,
  .share-pill,
  .btn-cta-primary {
    transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
  }

  .back-link:hover .back-link__arrow,
  .share-pill:hover,
  .btn-cta-primary:hover,
  .btn-cta-primary:active {
    transform: none;
  }
}