/* ============================================
   Case Study Detail Page Styles
   ============================================ */

/* ====== BACK LINK ====== */
.detail-back {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--gray-400);
  text-decoration: none;
  padding: 48px var(--content-pad) 32px;
  max-width: var(--content-max);
  margin: 0 auto;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.2s ease;
}

.detail-back:hover {
  color: var(--blue);
}

.detail-back:focus-visible {
  outline: 3px solid rgba(21, 101, 192, 0.35);
  outline-offset: 3px;
  border-radius: 8px;
}

.detail-back svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ====== HERO ====== */
.detail-hero {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--content-pad) 48px;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 48px;
  align-items: end;
}

.detail-hero-label {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 16px;
}

.detail-hero-left {
  min-width: 0;
}

.detail-hero-title {
  font-size: clamp(40px, 5.5vw, 72px);
  font-weight: 300;
  letter-spacing: -2px;
  line-height: 1.05;
  color: var(--gray-900);
}

.detail-hero-title strong {
  font-weight: 800;
}

.detail-hero-summary {
  font-size: 17px;
  color: var(--gray-600);
  line-height: 1.7;
  border-left: 4px solid var(--blue);
  padding-left: 24px;
  font-weight: 500;
  min-width: 0;
}

/* ====== FULL IMAGE ====== */
.detail-image {
  width: 100%;
  height: 50vh;
  min-height: 360px;
  position: relative;
  overflow: hidden;
}

.detail-image-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.detail-image-placeholder {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--gray-200), var(--gray-100));
}

.detail-image-label {
  position: absolute;
  bottom: 20px;
  right: 24px;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-500);
  background: var(--white);
  padding: 7px 16px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

/* ====== STATS BAR — OVERLAPPING ====== */
.detail-stats {
  max-width: 900px;
  margin: -44px auto 80px;
  position: relative;
  z-index: 10;
  background: var(--gray-900);
  color: var(--white);
  border-radius: var(--radius);
  padding: 0;
  display: flex;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.12);
}

.detail-stat {
  flex: 1;
  text-align: center;
  padding: 32px 20px;
}

.detail-stat + .detail-stat {
  border-left: 1px solid rgba(255, 255, 255, 0.08);
}

.detail-stat-value {
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--white);
  margin-bottom: 6px;
}

.detail-stat-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--gray-400);
}

/* ====== CHALLENGE — EDITORIAL ====== */
.detail-challenge {
  max-width: 840px;
  margin: 0 auto 100px;
  padding: 0 var(--content-pad);
}

.detail-section-heading {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.detail-section-heading::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--gray-200);
}

.detail-challenge-text {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.8;
  color: var(--gray-700);
}


/* ====== COMPARISON ====== */
.detail-comparison {
  max-width: 1100px;
  margin: 0 auto 100px;
  padding: 0 var(--content-pad);
}

.comp-grid {
  display: flex;
  align-items: stretch;
}

/* Traditional — muted, smaller */
.comp-old {
  width: 42%;
  min-width: 0;
  background: var(--gray-50);
  border-radius: var(--radius) 0 0 var(--radius);
  padding: 40px 36px;
  border: 1px solid var(--gray-200);
  border-right: none;
  opacity: 0.85;
}

.comp-old-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--gray-500);
  margin-bottom: 28px;
}

.comp-old-icon-wrap {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.comp-old-icon-wrap svg {
  width: 14px;
  height: 14px;
  color: var(--gray-500);
}

.comp-old ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.comp-old ul li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.6;
}

.comp-icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.comp-icon svg {
  width: 14px;
  height: 14px;
  color: var(--gray-400);
}

.comp-old ul li strong {
  color: var(--gray-600);
}

/* Our solution — elevated */
.comp-new {
  width: 58%;
  min-width: 0;
  background: var(--white);
  border-radius: var(--radius);
  padding: 48px 44px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.07);
  border: 1px solid var(--gray-100);
  position: relative;
  z-index: 2;
  margin-left: -24px;
}

.comp-new-title {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 22px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 32px;
}

.comp-new-icon-wrap {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--blue-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.comp-new-icon-wrap svg {
  width: 20px;
  height: 20px;
  color: var(--blue);
}

.comp-sol-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.comp-sol-item h5 {
  font-size: 15px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.comp-sol-item p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.6;
}

/* ====== VIDEO SECTION ====== */
.detail-video {
  max-width: 900px;
  margin: 0 auto 100px;
  padding: 0 var(--content-pad);
  display: none;
}

.detail-video-player {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--gray-900);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.detail-video-player-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0a1628, #1a2a4a);
}

.detail-video-play-btn {
  position: relative;
  z-index: 2;
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
}

.detail-video-play-btn:hover {
  transform: scale(1.08);
}

.detail-video-play-btn::after {
  content: '';
  width: 0;
  height: 0;
  border-left: 22px solid var(--blue);
  border-top: 13px solid transparent;
  border-bottom: 13px solid transparent;
  margin-left: 5px;
}

/* ====== TESTIMONIAL ====== */
.detail-testimonial {
  max-width: 840px;
  margin: 0 auto 100px;
  padding: 0 var(--content-pad);
  text-align: center;
  display: none;
}

.detail-testimonial-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--blue-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 28px;
}

.detail-testimonial-icon svg {
  width: 22px;
  height: 22px;
  color: var(--blue);
}

.detail-testimonial-quote {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 400;
  line-height: 1.6;
  color: var(--gray-800);
  margin-bottom: 24px;
}

.detail-testimonial-author {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--gray-400);
}

/* ====== CTA ====== */
.detail-cta {
  background: var(--gray-900);
  color: var(--white);
  padding: 80px var(--content-pad);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.detail-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(21, 101, 192, 0.08), transparent 70%);
}

.detail-cta-heading {
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.detail-cta-desc {
  font-size: 16px;
  color: var(--gray-400);
  margin-bottom: 32px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

.detail-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  min-height: 44px;
  border-radius: 100px;
  background: var(--white);
  color: var(--gray-900);
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  border: none;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: background-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
  position: relative;
  z-index: 1;
}

.detail-cta-btn:hover {
  background: var(--gray-100);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.detail-cta-btn svg {
  width: 18px;
  height: 18px;
}

.detail-cta-btn:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.6);
  outline-offset: 3px;
}

/* ====== NOT FOUND / ERROR ====== */
.detail-not-found,
.detail-error {
  text-align: center;
  padding: 120px 20px;
  font-size: 18px;
  color: var(--gray-500);
}

.detail-not-found a {
  display: inline-block;
  margin-top: 16px;
  color: var(--blue);
  font-weight: 600;
  text-decoration: none;
}

.detail-not-found a:hover {
  text-decoration: underline;
}

.detail-error {
  color: #C62828;
  background: #FFEBEE;
  border-radius: var(--radius);
  max-width: 600px;
  margin: 80px auto;
  padding: 40px;
}

/* ====== TOUCH DEVICE HOVER RESETS ====== */
@media (hover: none) {
  .detail-back:hover { color: var(--gray-400); }
  .detail-video-play-btn:hover { transform: none; }
  .detail-cta-btn:hover {
    background: var(--white);
    transform: none;
    box-shadow: none;
  }
}

/* ====== RESPONSIVE ====== */

@media (max-width: 1024px) {
  .detail-hero { gap: 36px; }
  .detail-stats { margin: -36px 36px 64px; }
}

@media (max-width: 860px) {
  .detail-hero {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-bottom: 36px;
  }

  .detail-hero-title {
    font-size: 38px;
    letter-spacing: -1px;
  }

  .detail-hero-summary {
    font-size: 16px;
  }

  .detail-image {
    height: 40vh;
    min-height: 280px;
  }

  .detail-stats {
    flex-direction: column;
    margin: -32px 24px 56px;
  }

  .detail-stat + .detail-stat {
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .comp-grid {
    flex-direction: column;
  }

  .comp-old {
    width: 100%;
    border-radius: var(--radius) var(--radius) 0 0;
    border-right: 1px solid var(--gray-200);
    border-bottom: none;
  }

  .comp-new {
    width: 100%;
    margin-left: 0;
    margin-top: -12px;
    border-radius: 0 0 var(--radius) var(--radius);
  }

  .comp-sol-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

@media (max-width: 640px) {
  .detail-back {
    padding: 32px var(--content-pad) 20px;
    font-size: 11px;
  }

  .detail-hero-title {
    font-size: 30px;
  }

  .detail-image {
    height: 32vh;
    min-height: 220px;
  }

  .detail-stats {
    margin: -28px 20px 48px;
  }

  .detail-stat {
    padding: 24px 16px;
  }

  .detail-stat-value { font-size: 28px; }

  .detail-challenge,
  .detail-comparison,
  .detail-video,
  .detail-testimonial {
    margin-bottom: 64px;
  }

  .comp-old { padding: 28px 24px; }
  .comp-new { padding: 32px 24px; }
  .comp-new-title { font-size: 18px; }

  .detail-cta { padding: 60px var(--content-pad); }
  .detail-cta-heading { font-size: 26px; }
  .detail-cta-desc { font-size: 15px; }
}

@media (max-width: 480px) {
  .detail-hero-title { font-size: 26px; }
  .detail-hero-summary { font-size: 15px; padding-left: 20px; }
  .detail-stat-value { font-size: 24px; }
  .detail-stat-label { font-size: 10px; letter-spacing: 1.5px; }
  .detail-video-play-btn { width: 60px; height: 60px; }
  .detail-testimonial-quote { font-size: 18px; }
}