/* ---------------------------------- */
/* case study — page shell             */
/* ---------------------------------- */

.case-study-body {
  background-color: var(--bg-0);
}

.cs-header {
  background-color: var(--bg-1);
  border-bottom: 1px solid var(--border);
  padding: 2rem 1.25rem 2.5rem;
}

.cs-header-inner {
  max-width: 760px;
  margin: 0 auto;
}

.cs-back-link {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--text-2);
  margin-bottom: 1.5rem;
}

.cs-back-link:hover {
  color: var(--orange);
}

.cs-kicker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--orange);
  margin-bottom: 0.5rem;
}

.cs-title {
  font-family: var(--font-header);
  font-weight: 500;
  font-size: 2.1rem;
  line-height: 1.15;
  color: var(--text-1);
  margin-bottom: 1rem;

  @media (min-width: 640px) {
    font-size: 2.7rem;
  }
}

.cs-lede {
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text-2);
  max-width: 65ch;
  margin-bottom: 2rem;
}

.cs-stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
}

.cs-stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.cs-stat-value {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.4rem;
  color: var(--text-1);
}

.cs-stat-label {
  font-size: 0.8rem;
  color: var(--text-3);
}

.cs-main {
  max-width: 760px;
  margin: 0 auto;
  padding: 3rem 1.25rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
}

.cs-section-title {
  font-family: var(--font-header);
  font-weight: 500;
  font-size: 1.5rem;
  color: var(--text-1);
  margin-bottom: 0.85rem;

  @media (min-width: 640px) {
    font-size: 1.75rem;
  }
}

.cs-section-body {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-2);
  max-width: 68ch;
  margin-bottom: 0.9rem;
}

.cs-section-body:last-of-type {
  margin-bottom: 1.25rem;
}

.cs-section-body code,
.cs-section-body :is(p, li) code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  color: var(--text-1);
  background-color: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.05em 0.35em;
}

/* ---------------------------------- */
/* before/after compare slider         */
/* ---------------------------------- */

.compare-slider {
  position: relative;
  max-width: 100%;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  border-radius: 2px;
  cursor: ew-resize;
  user-select: none;
  touch-action: none;
}

.compare-slider:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.compare-slider-mobile {
  max-width: 320px;
}

.compare-img {
  display: block;
  width: 100%;
  height: auto;
  pointer-events: none;
}

.compare-img-before {
  position: relative;
}

.compare-img-after {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  clip-path: inset(0 50% 0 0);
}

.compare-handle {
  position: absolute;
  top: 0;
  left: 50%;
  height: 100%;
  width: 2px;
  background-color: var(--orange);
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.compare-handle svg {
  width: 2rem;
  height: 2rem;
  padding: 0.4rem;
  color: #16130f;
  background-color: var(--orange);
  border-radius: 999px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
}

.compare-tag {
  position: absolute;
  top: 0.6rem;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-1);
  background-color: rgba(18, 19, 22, 0.75);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
  pointer-events: none;
}

.compare-tag-before {
  left: 0.6rem;
}

.compare-tag-after {
  right: 0.6rem;
}

/* ---------------------------------- */
/* data coverage table                 */
/* ---------------------------------- */

.cs-data-table {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.cs-data-row {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1.4fr;
  gap: 0.75rem;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--text-2);
}

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

.cs-data-head {
  background-color: var(--bg-1);
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text-3);
  font-size: 0.8rem;
}

.cs-data-mono {
  font-family: var(--font-mono);
  color: var(--text-1);
}

.cs-data-highlight {
  color: var(--text-1);
  font-weight: 600;
}

/* ---------------------------------- */
/* callout                             */
/* ---------------------------------- */

.cs-callout {
  border: 1px solid var(--border-strong);
  border-radius: 2px;
  padding: 1rem 1.15rem;
  background-color: var(--bg-1);
}

.cs-callout-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--orange);
  margin-bottom: 0.4rem;
}

.cs-callout-body {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text-2);
}

.cs-callout-body code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  color: var(--text-1);
  background-color: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.05em 0.35em;
}

/* ---------------------------------- */
/* bug list                            */
/* ---------------------------------- */

.cs-bug-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  counter-reset: bug;
}

.cs-bug {
  position: relative;
  padding: 1rem 1.15rem 1rem 3.25rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  counter-increment: bug;
}

.cs-bug::before {
  content: counter(bug);
  position: absolute;
  left: 1.05rem;
  top: 1rem;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-3);
}

.cs-bug-title {
  font-family: var(--font-header);
  font-weight: 500;
  font-size: 1.1rem;
  color: var(--text-1);
  margin-bottom: 0.4rem;
}

.cs-bug-body {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text-2);
}

.cs-bug-body code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  color: var(--text-1);
  background-color: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.05em 0.35em;
}

/* ---------------------------------- */
/* critique score                      */
/* ---------------------------------- */

.cs-score-panel {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  border: 1px solid var(--border-strong);
  border-radius: 2px;
  padding: 1.25rem 1.5rem;
  flex-wrap: wrap;
}

.cs-score-value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 2.75rem;
  color: var(--orange);
  line-height: 1;
  flex-shrink: 0;
}

.cs-score-max {
  font-size: 1.4rem;
  color: var(--text-3);
  font-weight: 500;
}

.cs-score-band {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 0.3rem;
}

.cs-score-issues {
  font-size: 0.88rem;
  color: var(--text-2);
  line-height: 1.55;
  max-width: 45ch;
}

/* ---------------------------------- */
/* feature grid                        */
/* ---------------------------------- */

.cs-feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;

  @media (min-width: 640px) {
    grid-template-columns: repeat(3, 1fr);
  }
}

.cs-feature {
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 1rem 1.1rem;
}

.cs-feature-title {
  font-family: var(--font-header);
  font-weight: 500;
  font-size: 1rem;
  color: var(--text-1);
  margin-bottom: 0.4rem;
}

.cs-feature-body {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text-2);
}

.cs-feature-body code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  color: var(--text-1);
  background-color: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.05em 0.3em;
}

.cs-feature-cut {
  border-style: dashed;
  border-color: var(--border-strong);
}

.cs-feature-cut .cs-feature-title {
  color: var(--text-3);
}

/* ---------------------------------- */
/* footer                              */
/* ---------------------------------- */

.cs-footer {
  border-top: 1px solid var(--border);
  background-color: var(--bg-1);
  text-align: center;
  padding: 2rem 1.25rem;
}

.cs-footer p + p {
  margin-top: 0.5rem;
}

.cs-footer-note {
  font-size: 0.82rem;
  color: var(--text-3);
  max-width: 55ch;
  margin: 0.6rem auto 0;
}