/* =================================================
   Case Study Detail Page
   Mobile First Design
   ================================================= */

/* ================================================
   Page Hero & Breadcrumb
   ================================================ */
.page-hero {
  background: var(--color-bg-light);
  padding: calc(var(--spacing-xl) * 2) 0 var(--spacing-lg) 0;
  margin-top: 60px;
}

.breadcrumb {
  display: flex;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

.breadcrumb a:hover {
  color: var(--color-accent-01);
}

.breadcrumb .current {
  color: var(--color-text-primary);
}

/* ================================================
   Case Study Detail Container
   ================================================ */
.case-study-detail {
  background: var(--color-bg-white);
}

/* ================================================
   Case Study Header
   ================================================ */
.case-study-header {
  padding: var(--spacing-xl) 0 var(--spacing-lg) 0;
}

.case-study-meta {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

.case-study-category,
.case-study-service {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 20px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  background: var(--color-accent-01);
  color: var(--color-text-primary);
}

.case-study-service {
  background: var(--color-bg-white);
  border: 2px solid var(--color-accent-01);
}

.case-study-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-black);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
  word-break: keep-all;
  overflow-wrap: break-word;
  line-break: strict;
  hyphens: auto;
}

@media (min-width: 769px) {
  .case-study-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
  }
}

.case-study-client {
  padding: var(--spacing-md);
  background: var(--color-bg-light);
  border-left: 4px solid var(--color-accent-01);
  border-radius: 4px;
}

.client-name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
}

.client-info {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/* ================================================
   Case Study Image
   ================================================ */
.case-study-image {
  width: 100%;
  margin-bottom: var(--spacing-xl);
  border-radius: 8px;
  overflow: hidden;
  background: var(--color-bg-light);
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
}

.case-study-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ================================================
   Content Sections
   ================================================ */
.case-study-content {
  padding-bottom: var(--spacing-md);
}

@media (min-width: 769px) {
  .case-study-content {
    padding-bottom: var(--spacing-xl);
  }
}

.content-section {
  margin-bottom: var(--spacing-xl);
}

.content-section:last-child {
  margin-bottom: 0;
}

@media (min-width: 769px) {
  .content-section {
    margin-bottom: calc(var(--spacing-xl) * 2);
  }
}

.content-body {
  font-size: var(--font-size-base);
  line-height: 1.8;
  color: var(--color-text-primary);
}

/* ================================================
   Challenge List
   ================================================ */
.challenge-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.challenge-list li {
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  background: var(--color-bg-light);
  border-left: 4px solid var(--color-accent-02);
  border-radius: 4px;
}

.challenge-list li:last-child {
  margin-bottom: 0;
}

.challenge-list h3 {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

@media (min-width: 769px) {
  .challenge-list h3 {
    font-size: var(--font-size-xl);
  }
}

.challenge-list p {
  font-size: var(--font-size-base);
  line-height: 1.8;
  margin: 0;
  color: var(--color-text-secondary);
}

/* ================================================
   Lead Text
   ================================================ */
.lead-text {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  line-height: 1.8;
  padding: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-bg-yellow-lighter) 0%, var(--color-white) 100%);
  border-radius: 8px;
  margin-bottom: var(--spacing-lg);
}

@media (min-width: 769px) {
  .lead-text {
    font-size: var(--font-size-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
  }
}

/* ================================================
   Solution Points
   ================================================ */
.solution-points {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.solution-point {
  padding: var(--spacing-lg);
  background: var(--color-bg-white);
  border: 2px solid var(--color-bg-light);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.solution-point:hover {
  border-color: var(--color-accent-01);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.point-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-accent-01);
  color: var(--color-text-primary);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-black);
  font-family: var(--font-secondary);
  border-radius: 50%;
  margin-bottom: var(--spacing-md);
}

.solution-point h3 {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

@media (min-width: 769px) {
  .solution-point h3 {
    font-size: var(--font-size-xl);
  }
}

.solution-point p {
  font-size: var(--font-size-base);
  line-height: 1.8;
  margin: 0;
  color: var(--color-text-secondary);
}

/* ================================================
   Results Grid
   ================================================ */
.results-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.result-card {
  padding: var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-bg-yellow-lighter) 0%, var(--color-white) 100%);
  border: 2px solid var(--color-accent-01);
  border-radius: 8px;
  text-align: center;
}

.result-number {
  font-size: calc(var(--font-size-2xl) * 1.5);
  font-weight: var(--font-weight-black);
  color: var(--color-accent-01);
  font-family: var(--font-secondary);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.result-label {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.result-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/* ================================================
   Results Detail
   ================================================ */
.results-detail {
  padding: var(--spacing-md);
  background: var(--color-bg-light);
  border-radius: 8px;
}

.results-detail h3 {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

@media (min-width: 769px) {
  .results-detail {
    padding: var(--spacing-xl);
  }

  .results-detail h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
  }
}

.results-detail ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.results-detail li {
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  position: relative;
  line-height: 1.8;
}

.results-detail li:last-child {
  margin-bottom: 0;
}

.results-detail li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  background: var(--color-accent-01);
  border-radius: 50%;
}

/* ================================================
   Voice Card
   ================================================ */
.voice-card {
  padding: var(--spacing-xl);
  background: var(--color-bg-white);
  border: 2px solid var(--color-bg-light);
  border-radius: 8px;
}

.voice-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-bg-light);
}

.voice-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--color-bg-light);
  flex-shrink: 0;
}

.voice-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.voice-meta {
  flex: 1;
}

.voice-name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
}

@media (min-width: 769px) {
  .voice-name {
    font-size: var(--font-size-lg);
  }
}

.voice-title {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

.voice-content p {
  font-size: var(--font-size-base);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.voice-content p:last-child {
  margin-bottom: 0;
}

/* ================================================
   Consultant Comment
   ================================================ */
.consultant-comment {
  padding: var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-bg-blue-light) 0%, var(--color-white) 100%);
  border: 2px solid var(--color-info-lighter);
  border-radius: 8px;
}

.consultant-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-cyan-light);
}

.consultant-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--color-cyan-light);
  flex-shrink: 0;
}

.consultant-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.consultant-meta {
  flex: 1;
}

.consultant-name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
}

@media (min-width: 769px) {
  .consultant-name {
    font-size: var(--font-size-lg);
  }
}

.consultant-title {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

.consultant-content p {
  font-size: var(--font-size-base);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.consultant-content p:last-child {
  margin-bottom: 0;
}

/* ================================================
   Case Study Navigation
   ================================================ */
.case-study-nav {
  padding: var(--spacing-lg) 0;
  text-align: center;
  border-top: 2px solid var(--color-bg-light);
}

@media (min-width: 769px) {
  .case-study-nav {
    padding: var(--spacing-xl) 0;
  }
}

/* ================================================
   Tablet (768px+)
   ================================================ */
@media (min-width: 768px) {
  .page-hero {
    padding: calc(var(--spacing-2xl) * 1.5) 0 var(--spacing-xl) 0;
  }

  .results-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
  }

  .solution-points {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

/* ================================================
   Desktop (1024px+)
   ================================================ */
@media (min-width: 1024px) {
  .case-study-header {
    padding: calc(var(--spacing-2xl) * 1.5) 0 var(--spacing-xl) 0;
  }

  .solution-points {
    grid-template-columns: repeat(3, 1fr);
  }
}