/* ============================================================
   Portfolio / Case Study styles
   Requires main.css tokens to be loaded first
   ============================================================ */

/* --- Portfolio index page ---------------------------------- */
.portfolio-hero {
  padding-top: var(--space-15);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid var(--color-border);
}

.portfolio-hero__label {
  font-size: var(--text-label);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.portfolio-hero__title {
  font-family: var(--font-serif);
  font-size: var(--text-h1);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-3);
}

.portfolio-hero__desc {
  max-width: 560px;
  font-size: var(--text-body-lg);
  line-height: 1.7;
  color: var(--color-secondary);
}

.portfolio-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  padding: var(--space-2) 0;
}

.portfolio-card {
  display: block;
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
}

.portfolio-card:last-child {
  border-bottom: none;
}

.portfolio-card__category {
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}

.portfolio-card__title {
  font-family: var(--font-serif);
  font-size: var(--text-h2);
  font-weight: 500;
  color: var(--color-primary);
  line-height: 1.3;
  margin-bottom: 8px;
  transition: color 0.12s;
}

.portfolio-card:hover .portfolio-card__title {
  color: var(--color-accent);
}

.portfolio-card__desc {
  font-size: var(--text-body-md);
  color: var(--color-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-2);
  max-width: 640px;
}

.portfolio-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.portfolio-card__tag {
  font-size: var(--text-caption);
  font-weight: 500;
  color: var(--color-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
}

/* --- Case study article ------------------------------------ */
.cs-article {
  max-width: 680px;
  margin-inline: auto;
  padding: var(--space-10) var(--space-3) var(--space-15);
}

.cs-breadcrumb {
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--space-3);
}

.cs-breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
}

.cs-breadcrumb a:hover {
  text-decoration: underline;
}

.cs-title {
  font-family: var(--font-serif);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-2);
}

.cs-subtitle {
  font-size: var(--text-body-lg);
  color: var(--color-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.cs-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  padding: var(--space-3) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}

.cs-meta__item {
  font-size: var(--text-caption);
}

.cs-meta__label {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  font-weight: 600;
  margin-bottom: 4px;
}

.cs-meta__value {
  color: var(--color-primary);
  font-weight: 500;
  font-size: var(--text-label);
}

.cs-callout {
  background: var(--color-accent-bg);
  border-left: 3px solid var(--color-accent);
  padding: var(--space-3) var(--space-4);
  margin: var(--space-5) 0;
}

.cs-callout__label {
  font-size: var(--text-caption);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.cs-callout p {
  font-size: var(--text-body-md);
  line-height: 1.7;
  color: var(--color-primary);
  margin: 0;
}

.cs-section-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-accent);
}

.cs-body p {
  font-size: var(--text-body-md);
  line-height: 1.75;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.cs-finding {
  margin: var(--space-4) 0;
  padding: var(--space-3) var(--space-4);
  border-left: 3px solid var(--color-border);
  background: var(--color-surface);
}

.cs-finding__number {
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 6px;
}

.cs-finding__title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.cs-finding p {
  font-size: var(--text-body-md);
  line-height: 1.7;
  color: var(--color-secondary);
  margin: 0;
}

.cs-resources {
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-10);
  padding-top: var(--space-5);
}

.cs-resources__title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.cs-resources__list {
  list-style: none;
}

.cs-resources__item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
}

.cs-resources__item:last-child {
  border-bottom: none;
}

.cs-resources__link {
  font-size: var(--text-body-md);
  font-weight: 500;
  color: var(--color-accent);
  text-decoration: none;
}

.cs-resources__link:hover {
  text-decoration: underline;
}

.cs-resources__type {
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

@media (max-width: 640px) {
  .portfolio-hero {
    padding-top: var(--space-10);
    padding-bottom: var(--space-8);
  }

  .cs-article {
    padding: var(--space-6) var(--space-2) var(--space-10);
  }

  .cs-title {
    font-size: 24px;
  }
}