/**
 * Case study pages — Framer-style clean layout
 * Shared with portfolio-page.css design tokens; loaded after it.
 */

:root {
  --cs-bg: #fbf9f5;
  --cs-surface: #ffffff;
  --cs-soft: #f4f1ea;
  --cs-text: #111111;
  --cs-muted: #5b5b5b;
  --cs-border: rgba(0, 0, 0, 0.1);
  --cs-accent: #1a1a1a;
  --cs-radius: 18px;
  --cs-radius-sm: 12px;
  --cs-shadow: 0 18px 44px rgba(0, 0, 0, 0.08);
  --cs-max: 1080px;
  --cs-pad-x: clamp(1.25rem, 4vw, 2.5rem);
  --cs-section-gap: clamp(3rem, 7vw, 5.5rem);
}

/* Layout */
.cs-main {
  width: 100%;
  max-width: var(--cs-max);
  margin: 0 auto;
  padding: 0 var(--cs-pad-x) 6rem;
}

.cs-section {
  margin-top: var(--cs-section-gap);
}

.cs-eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cs-muted);
}

.cs-h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.55rem, 3.4vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.cs-h3 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.cs-p {
  margin: 0 0 1rem;
  font-size: 1rem;
  line-height: 1.65;
  color: #2a2a2a;
}

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

.cs-bullets {
  margin: 0;
  padding-left: 1.1rem;
  list-style: disc;
  color: #2a2a2a;
}

.cs-bullets li {
  margin: 0 0 0.6rem;
  line-height: 1.6;
}

.cs-bullets li:last-child {
  margin-bottom: 0;
}

/* Hero */
.cs-hero {
  padding-top: clamp(2.5rem, 7vw, 4.5rem);
}

.cs-hero__top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 1rem 2rem;
  margin-bottom: 1.5rem;
}

.cs-hero__back {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--cs-muted);
}

.cs-hero__back:hover {
  color: var(--cs-text);
}

.cs-hero__back::before {
  content: "← ";
}

.cs-hero__title {
  margin: 0 0 0.85rem;
  font-size: clamp(2.4rem, 6.5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.04;
}

.cs-hero__lead {
  margin: 0 0 1.75rem;
  max-width: 42rem;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.55;
  color: #2a2a2a;
}

.cs-hero__image {
  width: 100%;
  border-radius: var(--cs-radius);
  overflow: hidden;
  background: var(--cs-soft);
  box-shadow: var(--cs-shadow);
  border: 1px solid var(--cs-border);
}

.cs-hero__image img {
  width: 100%;
  height: auto;
  display: block;
}

/* Meta chips: Year · Role · Position */
.cs-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  margin-top: 1.5rem;
}

.cs-meta__chip {
  background: var(--cs-surface);
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius-sm);
  padding: 0.85rem 1rem;
  text-align: left;
}

.cs-meta__label {
  display: block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cs-muted);
  margin: 0 0 0.25rem;
}

.cs-meta__value {
  display: block;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cs-text);
}

/* Two-column row: image | text  (alternating sides) */
.cs-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1.25rem, 3vw, 2.25rem);
  align-items: center;
}

.cs-row--reverse .cs-row__media {
  order: 2;
}

.cs-row__media {
  width: 100%;
  border-radius: var(--cs-radius);
  overflow: hidden;
  background: var(--cs-soft);
  border: 1px solid var(--cs-border);
}

.cs-row__media img {
  width: 100%;
  height: auto;
  display: block;
}

.cs-row__body {
  min-width: 0;
}

/* Block: full-bleed text + image */
.cs-block {
  padding: clamp(1.5rem, 3vw, 2.25rem);
  background: var(--cs-surface);
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
  box-shadow: var(--cs-shadow);
}

.cs-block--soft {
  background: var(--cs-soft);
  box-shadow: none;
}

/* Centered title section (e.g. "Where Does X Step In?") */
.cs-center {
  text-align: center;
}

.cs-center .cs-h2 {
  margin-left: auto;
  margin-right: auto;
  max-width: 42rem;
}

.cs-center__image {
  margin: 1.5rem auto 0;
  border-radius: var(--cs-radius);
  overflow: hidden;
  border: 1px solid var(--cs-border);
  background: var(--cs-soft);
  max-width: 100%;
}

.cs-center__image img {
  width: 100%;
  height: auto;
  display: block;
}

/* Step grid (Where Does ATS Step In) */
.cs-step-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(0.85rem, 2vw, 1.25rem);
  margin-top: 1.75rem;
}

.cs-step {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.cs-step__media {
  aspect-ratio: 3 / 4;
  border-radius: var(--cs-radius-sm);
  overflow: hidden;
  background: linear-gradient(165deg, #f4f3f0 0%, #e8e6e1 100%);
  border: 1px solid var(--cs-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.cs-step__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.cs-step__label {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 600;
  text-align: center;
  color: var(--cs-text);
  line-height: 1.4;
}

/* Two-up image+caption panels */
.cs-panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 1.5rem);
  margin-top: 1.5rem;
}

.cs-panel {
  margin: 0;
  background: linear-gradient(165deg, #f4f3f0 0%, #e8e6e1 100%);
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
  padding: clamp(0.75rem, 1.6vw, 1rem);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.cs-panel img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--cs-radius-sm);
  object-fit: contain;
}

.cs-panel__caption {
  margin: 0;
  text-align: center;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--cs-text);
  padding: 0 0.25rem 0.2rem;
}

/* Escalation — wide single image with caption */
.cs-escalation {
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem);
  background: linear-gradient(165deg, #f4f3f0 0%, #e8e6e1 100%);
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
  padding: clamp(1rem, 2.4vw, 1.5rem);
}

.cs-escalation img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--cs-radius-sm);
}

.cs-escalation__title {
  margin: 1rem 0 0;
  text-align: center;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* Demo video */
.cs-video-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--cs-radius);
  overflow: hidden;
  background: #000;
  box-shadow: var(--cs-shadow);
  border: 1px solid var(--cs-border);
}

.cs-video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Tech strip image (ATS) */
.cs-tech-strip {
  margin-top: 1.5rem;
  border-radius: var(--cs-radius);
  overflow: hidden;
  border: 1px solid var(--cs-border);
  background: var(--cs-surface);
  box-shadow: var(--cs-shadow);
}

.cs-tech-strip img {
  width: 100%;
  height: auto;
  display: block;
}

/* Research 3-column */
.cs-research-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 1.75rem);
  margin-top: 1.5rem;
}

.cs-research-col {
  background: var(--cs-surface);
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
  padding: clamp(1rem, 2vw, 1.4rem);
}

.cs-research-col__title {
  margin: 0 0 0.5rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cs-text);
}

.cs-research-col__meta {
  margin: 0 0 0.75rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: #333;
}

.cs-research-col__body {
  margin: 0;
  font-size: 0.95rem;
  color: #2a2a2a;
  line-height: 1.6;
}

.cs-research-col blockquote {
  margin: 0;
  padding-left: 0.85rem;
  border-left: 3px solid rgba(0, 0, 0, 0.15);
  font-style: italic;
  color: #333;
  line-height: 1.6;
}

.cs-research-col blockquote p {
  margin: 0;
}

/* Solution mantra (Das Lot "How Can We Create An Engaged Community") */
.cs-mantra {
  text-align: center;
  padding: clamp(1.5rem, 4vw, 2.5rem) clamp(1rem, 3vw, 2rem);
  background: linear-gradient(165deg, #f4f3f0 0%, #e8e6e1 100%);
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
}

.cs-mantra__line {
  margin: 0 auto;
  max-width: 36rem;
  font-size: clamp(1.4rem, 3.5vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--cs-text);
}

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

/* Up next + back footer */
.cs-next {
  margin-top: var(--cs-section-gap);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  padding: clamp(1.25rem, 3vw, 2rem);
  background: var(--cs-surface);
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.cs-next:hover {
  transform: translateY(-2px);
  border-color: rgba(0, 0, 0, 0.18);
}

.cs-next__eyebrow {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cs-muted);
  margin: 0 0 0.25rem;
}

.cs-next__title {
  margin: 0;
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.cs-next__cta {
  font-weight: 600;
  font-size: 0.95rem;
}

.cs-next__cta::after {
  content: " →";
}

/* Responsive */
@media (max-width: 860px) {
  .cs-row {
    grid-template-columns: 1fr;
  }

  .cs-row--reverse .cs-row__media {
    order: 0;
  }

  .cs-meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .cs-step-grid {
    grid-template-columns: 1fr;
    max-width: 22rem;
    margin-left: auto;
    margin-right: auto;
  }

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

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

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

@media (prefers-reduced-motion: reduce) {
  .cs-next {
    transition: none;
  }
  .cs-next:hover {
    transform: none;
  }
}