/* =========================================================
   Porfolio-css.css — Case Study Pages
   Inherits all tokens from style.css which is loaded first.
   This file adds case-study-specific overrides only.
   ========================================================= */

/* Case study pages use a lighter body bg to let images pop */
.case-study-page {
  background-color: var(--color-bg);
}

/* Wider content column for case study reading comfort */
.case-study-body .container {
  max-width: 860px;
}

/* Paragraph spacing in case study body */
.case-study-body p + p {
  margin-top: var(--space-4);
}

/* Sub-section heading rhythm */
.case-study-body h2 {
  font-size: var(--font-size-lg);
  font-family: var(--font-heading);
  font-weight: var(--font-weight-heading);
  color: var(--color-text-primary);
  margin-top: var(--space-12);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.case-study-body h2:first-of-type {
  margin-top: 0;
}

/* Images in case study — full-bleed with shadow */
.case-study-body img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-card);
  margin-block: var(--space-8);
  box-shadow: var(--shadow-card);
  display: block;
}

/* Back link */
.case-study-body .back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-accent);
  font-weight: var(--font-weight-subheading);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-12);
  text-decoration: none;
  transition: gap var(--transition-fast);
}

.case-study-body .back-link:hover {
  gap: var(--space-3);
}

.case-study-body .back-link:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 4px;
  border-radius: 2px;
}

/* Case study bullet lists */
.cs-list {
  list-style: disc;
  padding-left: 1.5rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.cs-list li {
  margin-bottom: var(--space-2);
  line-height: var(--line-height-body);
}

/* Case study process step headings */
.cs-step {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-subheading);
  color: var(--color-accent);
  margin-bottom: var(--space-2);
  margin-top: var(--space-6);
  font-family: var(--font-heading);
}

/* Research findings — highlighted insight bullets */
.cs-research-findings {
  list-style: none;
  padding: 0;
  margin-bottom: var(--space-6);
}

.cs-research-findings li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-3);
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border-left: 3px solid var(--color-accent);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-body);
}

.cs-research-findings li::before {
  content: '→';
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* Before / After comparison grid */
.cs-before-after {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-block: var(--space-8);
}

.cs-before-after__col {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
}

.cs-before-after__label {
  display: block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-subheading);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-eyebrow);
  margin-bottom: var(--space-4);
}

.cs-before-after__col--before .cs-before-after__label {
  color: #9CA3AF;
}

.cs-before-after__col--after .cs-before-after__label {
  color: var(--color-accent);
}

.cs-before-after__list {
  list-style: none;
  padding: 0;
}

.cs-before-after__list li {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
  line-height: 1.55;
}

.cs-before-after__list li:last-child {
  border-bottom: none;
}

.cs-before-after__col--before .cs-before-after__list li::before {
  content: '✕ ';
  color: #9CA3AF;
  font-size: 0.65rem;
  vertical-align: 1px;
}

.cs-before-after__col--after .cs-before-after__list li::before {
  content: '✓ ';
  color: var(--color-accent);
  font-size: 0.65rem;
  vertical-align: 1px;
}

/* Mobile adjustments */
@media (max-width: 767px) {
  .case-study-body .container {
    padding-inline: var(--container-padding);
  }

  .cs-before-after {
    grid-template-columns: 1fr;
  }
}