/* =====================================================
 * DecryptCode INC — Case Study Styles
 * Full case study page layout, metrics, arch diagrams
 * Last Updated: February 21, 2026
 * ===================================================== */

/* ═══════════════════════════════════════════
 * CASE STUDY LIST PAGE
 * ═══════════════════════════════════════════ */

.cases-featured {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}

.cases-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

/* ═══════════════════════════════════════════
 * CASE STUDY — Hero / Header
 * Supports both .case-hero and .case-study__hero
 * ═══════════════════════════════════════════ */

.case-hero,
.case-study__hero {
  padding-top: calc(64px + var(--space-10));
  padding-bottom: var(--space-10);
  border-bottom: 1px solid var(--border-subtle);
}

.case-study__hero-content {
  max-width: 720px;
}

.case-hero__tags,
.case-study__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.case-hero__title {
  font-size: var(--text-3xl);
  max-width: 700px;
  margin-bottom: var(--space-4);
}

.case-study__hero h1,
.case-hero h1 {
  font-size: var(--text-4xl);
  max-width: 700px;
  margin-bottom: var(--space-4);
}

.case-hero__subtitle,
.case-study__subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  line-height: var(--leading-normal);
  margin-bottom: var(--space-6);
}

/* ── Case Study Hero Image ── */
.case-study__hero-img {
  margin-top: var(--space-8);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  max-width: 900px;
}

.case-study__hero-img img {
  width: 100%;
  height: auto;
  display: block;
}

/* Hero metric strip — key results */
.case-hero__metrics,
.case-study__metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  max-width: 600px;
  padding: var(--space-5);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.case-hero__metric,
.case-study__metric {
  padding: var(--space-2);
}

.case-hero__metric-value,
.case-study__metric-value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--weight-extrabold);
  color: var(--text-accent);
  line-height: 1;
}

.case-hero__metric-label,
.case-study__metric-label {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-top: var(--space-1);
}

/* ═══════════════════════════════════════════
 * CASE STUDY — Info Sidebar
 * ═══════════════════════════════════════════ */

.case-sidebar {
  position: sticky;
  top: calc(64px + var(--space-6));
}

.case-sidebar__card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-4);
}

.case-sidebar__title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--text-tertiary);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--border-subtle);
}

.case-sidebar__item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-block: var(--space-2);
}

.case-sidebar__item + .case-sidebar__item {
  border-top: 1px solid var(--border-subtle);
}

.case-sidebar__label {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.case-sidebar__value {
  font-size: var(--text-sm);
  color: var(--text-primary);
  font-weight: var(--weight-medium);
}

.case-sidebar__tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ═══════════════════════════════════════════
 * CASE STUDY — Content Sections
 * ═══════════════════════════════════════════ */

/* Top spacing between hero and content body */
.case-study > .container {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

.case-content {
  max-width: 720px;
}

/* Section blocks inside case study */
.case-section,
.case-study__section {
  margin-bottom: var(--space-10);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid var(--border-subtle);
}

.case-section:last-of-type,
.case-study__section:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}

.case-section__title,
.case-study__section h2 {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  margin-bottom: var(--space-5);
  color: var(--text-primary);
}

.case-section__number {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent-primary);
  opacity: 0.7;
}

.case-section__body,
.case-study__section p {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.case-section__body p,
.case-study__section p {
  margin-bottom: var(--space-4);
}

.case-study__section p:last-child {
  margin-bottom: 0;
}

.case-section__body ul,
.case-section__body ol,
.case-study__section ul,
.case-study__section ol {
  list-style: disc;
  padding-left: var(--space-6);
  margin-bottom: var(--space-5);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.case-section__body ol,
.case-study__section ol {
  list-style: decimal;
}

.case-section__body li,
.case-study__section li {
  margin-bottom: var(--space-3);
  padding-left: var(--space-1);
}

.case-section__body li::marker,
.case-study__section li::marker {
  color: var(--accent-primary);
}

.case-study__section strong {
  color: var(--text-primary);
  font-weight: var(--weight-semibold);
}

/* ═══════════════════════════════════════════
 * ARCHITECTURE DIAGRAM
 * CSS-only flow diagram
 * ═══════════════════════════════════════════ */

.arch-diagram {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-block: var(--space-8);
  overflow-x: auto;
}

.arch-diagram__title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--text-tertiary);
  margin-bottom: var(--space-4);
}

.arch-diagram__flow {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.arch-diagram__node {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  min-width: 100px;
  text-align: center;
}

.arch-diagram__node-name {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-primary);
  font-weight: var(--weight-medium);
}

.arch-diagram__node-desc {
  font-size: 0.625rem;
  color: var(--text-tertiary);
  margin-top: var(--space-1);
}

.arch-diagram__arrow {
  color: var(--accent-primary);
  font-size: var(--text-lg);
  flex-shrink: 0;
  opacity: 0.5;
}

/* Vertical variant */
.arch-diagram__flow--vertical {
  flex-direction: column;
}

.arch-diagram__flow--vertical .arch-diagram__arrow {
  transform: rotate(90deg);
}

/* ═══════════════════════════════════════════
 * RESULTS / METRICS GRID
 * ═══════════════════════════════════════════ */

.results-grid,
.case-study__results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-block: var(--space-6);
}

.result-card,
.case-study__result {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  text-align: center;
  transition: border-color var(--transition-base);
}

.result-card:hover,
.case-study__result:hover {
  border-color: var(--accent-border);
}

.result-card__value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--weight-extrabold);
  color: var(--text-accent);
  line-height: 1;
}

.result-card__label {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  margin-top: var(--space-2);
}

.result-card__context {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--text-tertiary);
  margin-top: var(--space-1);
}

/* Before / After comparison */
.result-before-after {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

.result-before,
.case-study__result-before {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  text-decoration: line-through;
}

.result-after,
.case-study__result-after {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--success);
}

.case-study__result-arrow {
  color: var(--accent-primary);
  font-size: var(--text-lg);
  flex-shrink: 0;
  opacity: 0.5;
}

.case-study__result-label {
  width: 100%;
  font-size: var(--text-xs);
  color: var(--text-secondary);
  margin-top: var(--space-1);
}

/* ═══════════════════════════════════════════
 * RELATED SERVICES (case study detail)
 * ═══════════════════════════════════════════ */

.case-study__related {
  margin-top: var(--space-12);
  padding-top: var(--space-10);
  border-top: 1px solid var(--border-subtle);
}

.case-study__related h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  margin-bottom: var(--space-6);
}

/* ═══════════════════════════════════════════
 * CASE STUDY CTA (bottom)
 * ═══════════════════════════════════════════ */

.case-cta {
  background: var(--bg-secondary);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  margin-top: var(--space-12);
}

.case-cta__title {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  margin-bottom: var(--space-3);
}

.case-cta__desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: var(--space-6);
}

/* ═══════════════════════════════════════════
 * RESPONSIVE
 * ═══════════════════════════════════════════ */

@media (min-width: 640px) {
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-hero__metrics,
  .case-study__metrics {
    grid-template-columns: repeat(3, 1fr);
  }

  .results-grid,
  .case-study__results-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .cases-featured {
    grid-template-columns: repeat(2, 1fr);
  }
}