/* ============================================================
   CASE STUDY — Shared Layout
   ============================================================ */

/* Hero */
.cs-hero {
  padding: 160px var(--gutter) 60px;
  position: relative;
}

.cs-breadcrumb {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-3);
  margin-bottom: clamp(60px, 8vw, 100px);
}

.cs-breadcrumb a:hover { color: var(--ink); }

.cs-num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--ink-3);
  margin-bottom: 32px;
}

.cs-title {
  font-family: var(--serif);
  font-size: clamp(56px, 9vw, 160px);
  line-height: 0.92;
  letter-spacing: -0.025em;
  font-weight: 400;
  margin-bottom: clamp(48px, 8vw, 100px);
  max-width: 1400px;
}

.cs-title em { font-style: italic; color: var(--ink-3); }

.cs-meta-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--rule);
}

@media (max-width: 820px) {
  .cs-meta-grid { grid-template-columns: 1fr 1fr; gap: 28px 24px; }
}

.cs-meta-item .label {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  margin-bottom: 12px;
}

.cs-meta-item .value {
  font-family: var(--serif);
  font-size: clamp(22px, 1.9vw, 26px);
  line-height: 1.3;
  color: var(--ink);
}

/* Big visual hero */
.cs-cover {
  height: clamp(360px, 64vh, 760px);
  margin: 0 var(--gutter);
  position: relative;
}

.cs-cover .placeholder { height: 100%; }

.cs-cover-meta {
  position: absolute;
  bottom: 24px;
  left: 24px;
  right: 24px;
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(244, 241, 236, 0.7);
  z-index: 2;
}

/* Section blocks */
.cs-section {
  padding: calc(var(--section) / 2) 0;
}

.cs-section-header {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  margin-bottom: 24px;
}

@media (max-width: 820px) {
  .cs-section-header { grid-template-columns: 1fr; gap: 12px; }
}

.cs-section-num {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  padding-top: 8px;
  padding-left: 24px;
}

.cs-section-title {
  font-family: var(--serif);
  font-size: clamp(36px, 5vw, 76px);
  line-height: 1;
  letter-spacing: -0.02em;
  font-weight: 400;
}

.cs-section-title em { font-style: italic; color: var(--accent); }

.cs-prose {
  display: grid;
  grid-template-columns: 200px 1fr 1fr;
  gap: 32px;
  padding-left: 24px;
  padding-right: 24px;
}

@media (max-width: 820px) {
  .cs-prose { grid-template-columns: 1fr; gap: 16px; }
}

.cs-prose .col-label {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-3);
}

.cs-prose p {
  font-family: var(--serif);
  font-size: clamp(24px, 1.9vw, 31px);
  line-height: 1.45;
  color: var(--ink-2);
  margin-bottom: 18px;
}

.cs-prose p:last-child { margin-bottom: 0; }

.cs-prose p strong { font-weight: 400; color: var(--ink); }
.cs-prose p em { font-style: italic; color: var(--accent); }

/* Quote / pull-quote */
.cs-pullquote {
  padding: calc(var(--section) / 2) 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.cs-pullquote blockquote {
  font-family: var(--serif);
  font-size: clamp(28px, 4.4vw, 64px);
  line-height: 1.18;
  letter-spacing: -0.015em;
  max-width: 1280px;
}

.cs-pullquote blockquote em { font-style: italic; color: var(--accent); }

.cs-pullquote cite {
  display: block;
  margin-top: 32px;
  font-style: normal;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-3);
}

/* Visual block — full-bleed */
.cs-visual {
  margin: 0 var(--gutter);
  position: relative;
}

.cs-visual.full-bleed {
  margin: 0;
}

.cs-visual .caption {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  display: flex;
  justify-content: space-between;
}

.cs-visual-tall { height: clamp(420px, 78vh, 880px); }
.cs-visual-med { height: clamp(360px, 56vh, 640px); }
.cs-visual-short { height: clamp(280px, 42vh, 480px); }

/* Two-up & three-up grids */
.cs-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 0 var(--gutter);
}

.cs-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 0 var(--gutter);
}

@media (max-width: 820px) {
  .cs-grid-2, .cs-grid-3 { grid-template-columns: 1fr; gap: 16px; margin: 0 var(--gutter); }
}

.cs-grid-2 .placeholder,
.cs-grid-3 .placeholder { height: clamp(300px, 44vh, 540px); }

/* Before / After */
.cs-ba {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 0 var(--gutter);
  position: relative;
}

@media (max-width: 820px) {
  .cs-ba { grid-template-columns: 1fr; }
}

/* Single, full-width image — wider proportional padding inside the plane. */
.cs-ba.is-solo { grid-template-columns: 1fr; }
.cs-ba.is-solo .cs-ba-img { --pad: clamp(40px, 7vw, 96px); }
.cs-ba.is-solo .cs-ba-item .placeholder { height: clamp(420px, 64vh, 720px); }

.cs-ba-item .label {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 12px;
  color: var(--ink-3);
}

.cs-ba-item .label strong { font-weight: 400; color: var(--ink); }

.cs-ba-item .placeholder { height: clamp(360px, 56vh, 620px); }

.cs-ba-img {
  --pad: 24px;
  position: absolute;
  inset: var(--pad);
  width: calc(100% - (var(--pad) * 2));
  height: calc(100% - (var(--pad) * 2));
  object-fit: contain;
  object-position: center;
  filter: drop-shadow(0 12px 28px rgba(0, 0, 0, 0.22)) drop-shadow(0 4px 8px rgba(0, 0, 0, 0.08));
  z-index: 1;
}

/* Metric cards */
.cs-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  /* Invisible leading "cs-section-num / col-label" gutter (≈200px col + 32px
     header gap, minus the 24px the first metric pads internally) so the first
     metric's number lines up with the section <h2>. */
  padding-left: 208px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

@media (max-width: 820px) {
  .cs-metrics { grid-template-columns: 1fr 1fr; padding-left: 36px; }
}

.cs-metric {
  padding: 48px 24px 48px 24px;
  gap: 24px;
  border-right: 1px solid var(--rule);
}

.cs-metric:last-child { border-right: 0; padding-right: 0; }

@media (max-width: 820px) {
  .cs-metric:nth-child(2) { border-right: 0; padding-right: 0; }
  .cs-metric { border-bottom: 1px solid var(--rule); padding: 32px 16px 32px 16px; }
  .cs-metric:nth-child(odd) { padding-left: 16px; }
  .cs-metric:nth-last-child(-n+2) { border-bottom: 0; }
}

.cs-metric .num {
  font-family: var(--serif);
  /* Scale the whole metric up: same clamp as .hero-title so .m-val matches it,
     and m-arrow/m-unit (0.5em) scale proportionally off this. */
  font-size: clamp(64px, 13.5vw, 240px);
  line-height: 0.88;
  letter-spacing: -0.025em;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
}

.cs-metric .num .m-val {
  font-size: clamp(64px, 13.5vw, 240px);
  line-height: 0.88;
  font-weight: 200;
  color: var(--accent);
}

.cs-metric .num .m-arrow,
.cs-metric .num .m-unit {
  font-size: 0.3em;
  line-height: 1;
  font-style: italic;
  color: var(--accent);
  margin-top: 0.05em;
}

.cs-metric .lbl {
  font-family: var(--mono);
  /* Bumped proportionally to the nearest defined size token (.cs-prose p). */
  font-size: clamp(18px, 1.2vw, 24px);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  line-height: 1.6;
}

/* Process list */
.cs-process {
  display: flex;
  flex-direction: column;
}

.cs-process-step {
  display: grid;
  grid-template-columns: 80px 200px 1fr;
  gap: 32px;
  padding: 36px 0 36px 24px;
  border-top: 1px solid var(--rule);
  align-items: start;
}

.cs-process-step:last-child { border-bottom: 1px solid var(--rule); }

@media (max-width: 820px) {
  .cs-process-step { grid-template-columns: 1fr; gap: 12px; padding: 28px 0 28px 16px; }
}

.cs-process-step .step-num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ink-3);
}

.cs-process-step .step-title {
  font-family: var(--serif);
  font-size: clamp(29px, 2.9vw, 43px);
  line-height: 1.05;
  letter-spacing: -0.01em;
}

.cs-process-step .step-body {
  font-size: 18px;
  line-height: 1.6;
  color: var(--ink-2);
  max-width: 640px;
}

/* Next case */
.cs-next {
  padding: calc(var(--section) / 2) var(--gutter);
  border-top: 1px solid var(--rule);
}

.cs-next-link {
  display: block;
  position: relative;
  width: max-content;
  max-width: 100%;
  margin-left: auto;
  text-align: right;
  padding-right: clamp(8px, 4vw, 64px);
}

.cs-next-link .label {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  margin-bottom: 12px;
  display: flex;
  justify-content: flex-end;
  gap: 16px;
}

.cs-next-link h3 {
  font-family: var(--serif);
  font-size: clamp(28px, 5vw, 84px);
  line-height: 0.92;
  letter-spacing: -0.025em;
  font-weight: 400;
  transition: transform 0.6s var(--ease), color 0.6s var(--ease);
}

.cs-next-link:hover h3 {
  transform: translateX(-16px);
  font-style: italic;
  color: var(--accent);
}

/* Inline UI mockup chrome — drawn placeholders w/ structure */
.mock-window {
  width: 88%;
  max-width: 1100px;
  margin: 0 auto;
  position: absolute;
  inset: 0;
  margin: auto;
  background: var(--paper);
  border-radius: 8px;
  box-shadow: 0 40px 100px rgba(0,0,0,0.18);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.mock-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--rule);
  background: var(--paper-2);
  flex: 0 0 auto;
}

.mock-titlebar .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--rule); }
.mock-titlebar .url {
  flex: 1;
  text-align: center;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.06em;
}

.mock-body {
  flex: 1;
  padding: 24px;
  overflow: hidden;
  position: relative;
}

/* ============================================================
   Content slices — long-page screenshots, stacked
   ============================================================ */

.cs-slices {
  max-width: 1280px;
  margin: 48px auto 0;
  padding: 0 var(--gutter);
  display: flex;
  flex-direction: column;
  gap: 48px;
}

@media (max-width: 880px) {
  .cs-slices { gap: 28px; margin-top: 28px; }
}

.cs-slice {
  /* Each slice is an editorial figure */
  display: block;
}

.cs-slice-caption {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 16px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.cs-slice-caption strong {
  font-weight: 500;
  color: var(--ink-2);
  letter-spacing: 0.04em;
  text-transform: none;
  font-family: var(--mono);
}

.cs-slice-caption .num {
  font-variant-numeric: tabular-nums;
}

.cs-slice-figure {
  position: relative;
  display: block;
  border: 1px solid var(--rule);
  border-radius: 6px;
  overflow: hidden;
  background: var(--paper-2);
  /* Soft shadow that suggests depth without being decorative */
  box-shadow:
    0 1px 2px rgba(14, 14, 12, 0.04),
    0 8px 24px -8px rgba(14, 14, 12, 0.08);
}

/* Reveal animation handled by the existing .reveal-img class on the figure */

.cs-slice-figure img {
  display: block;
  width: 100%;
  height: auto;
  /* Slight color depth so light cream backgrounds in screenshots don't disappear */
}

/* Footer slice gets a slightly different treatment — narrower, marked as closing */
.cs-slice.is-closing .cs-slice-figure {
  max-width: 80%;
  margin: 0 auto;
}

@media (max-width: 880px) {
  .cs-slice.is-closing .cs-slice-figure { max-width: 100%; }
  .cs-slice-caption { font-size: 11px; }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  .cs-slice-figure {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ============================================================
   Video slice — mirrors .cs-slice for motion content
   ============================================================ */

.cs-video-figure {
  position: relative;
  display: block;
  border: 1px solid var(--rule);
  border-radius: 6px;
  overflow: hidden;
  background: var(--paper-2);
  box-shadow:
    0 1px 2px rgba(14, 14, 12, 0.04),
    0 8px 24px -8px rgba(14, 14, 12, 0.08);
}

.cs-video-figure video {
  display: block;
  width: 100%;
  height: auto;
}

/* ============================================================
   Back to top button
   ============================================================ */

.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: rgba(14, 14, 12, 0.1);
  color: var(--ink);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 250ms ease;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  background: rgba(14, 14, 12, 0.18);
}

@media (max-width: 700px) {
  .back-to-top { bottom: 24px; right: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  .back-to-top { transition: none; }
}

/* ============================================================
   Competitor matrix table
   ============================================================ */

.cs-matrix-wrap {
  max-width: 1280px;
  margin: 24px auto 0;
  padding: 0 var(--gutter);
}

@media (max-width: 700px) {
  .cs-matrix-wrap { overflow-x: auto; }
}

.cs-matrix {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.cs-matrix thead th {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  padding: 12px 16px;
  text-align: center;
  border-bottom: 1px solid var(--rule);
  white-space: nowrap;
}

.cs-matrix thead th:first-child {
  text-align: left;
}

.cs-matrix tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--rule);
  text-align: center;
  vertical-align: middle;
}

.cs-matrix tbody td:first-child {
  text-align: left;
  font-family: var(--body);
  color: var(--ink);
  white-space: nowrap;
}

.cs-matrix tbody tr:nth-child(even) {
  background: var(--paper-2);
}

.cs-matrix .check {
  color: var(--ink);
  font-size: 16px;
}

.cs-matrix .cross {
  color: var(--ink-4);
  font-size: 16px;
}

.cs-matrix-caption {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 var(--gutter);
}