/* ─────────────────────────────────────────────────────────────
   CASE STUDY — shared page styles
   Relies on home.css for :root tokens, reset, nav, footer, container
───────────────────────────────────────────────────────────── */

/* ─── PAGE HERO ─── */
.cs-page-hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
}

.cs-page-hero__bg {
  position: absolute;
  inset: 0;
}

.cs-page-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  display: block;
}

.cs-page-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0.10) 0%,
    rgba(0,0,0,0.45) 55%,
    rgba(0,0,0,0.78) 100%
  );
}

.cs-page-hero__content {
  position: relative;
  z-index: 2;
  padding-top: 40px;
  padding-bottom: clamp(48px, 8vw, 96px);
  color: #fff;
}

.cs-page-hero__back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-label);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  margin-bottom: clamp(28px, 5vw, 60px);
  transition: color 0.2s;
  text-decoration: none;
}

.cs-page-hero__back:hover { color: #fff; }

.cs-page-hero__tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.cs-page-hero__tag {
  font-family: var(--font-label);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.3);
  color: rgba(255,255,255,0.8);
}

.cs-page-hero__tag--accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #0a0818;
}

.cs-page-hero__title {
  font-family: var(--font-label);
  font-size: clamp(2.6rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 18px;
  max-width: 820px;
}

.cs-page-hero__subtitle {
  font-size: clamp(0.95rem, 1.8vw, 1.25rem);
  color: rgba(255,255,255,0.72);
  max-width: 500px;
  line-height: 1.55;
}

/* ─── OVERVIEW BAR ─── */
.cs-overview {
  border-bottom: 1px solid var(--border);
}

.cs-overview__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr) 2fr;
  gap: 0;
}

.cs-overview__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 6px;
  padding: clamp(24px, 3.5vw, 44px) clamp(24px, 3.5vw, 44px);
  border-right: 1px solid var(--border);
}

.cs-overview__num {
  font-size: clamp(1.6rem, 2.8vw, 2.6rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text);
}

.cs-overview__stat-label {
  font-family: var(--font-label);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.cs-overview__desc {
  padding: clamp(24px, 3.5vw, 44px) clamp(24px, 3.5vw, 44px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 20px;
}

.cs-overview__text {
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--muted);
  max-width: 460px;
}

.cs-overview__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
}

.cs-overview__meta-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.cs-overview__meta-key {
  font-family: var(--font-label);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.cs-overview__meta-val {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
}

/* ─── CONTENT SECTIONS ─── */
.cs-section {
  padding-block: clamp(56px, 8vw, 100px);
  border-bottom: 1px solid var(--border);
}

.cs-section:last-of-type {
  border-bottom: none;
}

.cs-section__header {
  margin-bottom: clamp(28px, 4vw, 48px);
}

.cs-section__eyebrow {
  display: block;
  font-family: var(--font-label);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.cs-section__title {
  font-family: var(--font-sans);
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  font-weight: 800;
  line-height: 1.1;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.cs-section__desc {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
  max-width: 580px;
}

/* ─── SPLIT LAYOUT ─── */
.cs-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}

.cs-split--text-right .cs-split__text { order: 2; }
.cs-split--text-right .cs-split__visual { order: 1; }

.cs-split__text {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 8px;
}

.cs-split__visual {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.cs-split__visual img {
  width: 100%;
  display: block;
}

/* ─── FULL WIDTH VISUAL ─── */
.cs-visual {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.cs-visual img {
  width: 100%;
  display: block;
}

/* ─── IMAGE GRID ─── */
.cs-grid {
  display: grid;
  gap: 16px;
}

.cs-grid--2 { grid-template-columns: 1fr 1fr; }
.cs-grid--3 { grid-template-columns: 1fr 1fr 1fr; }

.cs-grid__item {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--card-bg);
}

.cs-grid__item img {
  width: 100%;
  display: block;
}

/* ─── VIDEO THUMB ─── */
.cs-video-thumb {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #111;
  cursor: pointer;
}

.cs-video-thumb img {
  width: 100%;
  display: block;
  opacity: 0.82;
  transition: opacity 0.2s;
}

.cs-video-thumb:hover img { opacity: 1; }

.cs-video-thumb__play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.cs-video-thumb__play-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s, background 0.2s;
}

.cs-video-thumb:hover .cs-video-thumb__play-btn {
  transform: scale(1.1);
  background: var(--accent);
}

.cs-video-thumb__play-btn svg {
  width: 20px;
  height: 20px;
  fill: #0a0818;
  margin-left: 3px;
}

/* ─── EMAIL ROW ─── */
.cs-edm-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.cs-edm-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--card-bg);
}

.cs-edm-card img {
  width: 100%;
  display: block;
}

/* ─── PRESS CARDS ─── */
.cs-press-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.cs-press-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--card-bg);
}

.cs-press-card img {
  width: 100%;
  display: block;
}

/* ─── PAGE NAV ─── */
.cs-page-nav {
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.cs-page-nav__link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(24px, 4vw, 48px) clamp(20px, 5vw, 60px);
  transition: background 0.2s;
  text-decoration: none;
  color: var(--text);
}

.cs-page-nav__link:hover { background: rgba(0,0,0,0.04); }

.cs-page-nav__link--next {
  text-align: right;
  border-left: 1px solid var(--border);
}

.cs-page-nav__dir {
  font-family: var(--font-label);
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.cs-page-nav__name {
  font-size: clamp(0.95rem, 2.2vw, 1.6rem);
  font-weight: 800;
  line-height: 1.15;
  text-transform: uppercase;
}

/* ─── PLATFORM STATS ─── */
.cs-platform-stats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: clamp(28px, 4vw, 48px);
}

.cs-platform-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: clamp(28px, 4vw, 48px) 20px;
  border-right: 1px solid var(--border);
  text-align: center;
}

.cs-platform-stat:last-child { border-right: none; }

.cs-platform-stat__icon {
  width: 28px;
  height: 28px;
  color: var(--muted);
  opacity: 0.5;
}

.cs-platform-stat__icon svg {
  width: 100%;
  height: 100%;
}

.cs-platform-stat__num {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text);
}

.cs-platform-stat__label {
  font-family: var(--font-label);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.cs-platform-stat--total {
  background: var(--text);
}

.cs-platform-stat--total .cs-platform-stat__num {
  color: var(--accent);
}

.cs-platform-stat--total .cs-platform-stat__label {
  color: rgba(255,255,255,0.5);
}

@media (max-width: 640px) {
  .cs-platform-stats {
    grid-template-columns: repeat(5, 1fr);
  }
  .cs-platform-stat {
    padding: 16px 6px;
    gap: 4px;
  }
  .cs-platform-stat__icon { display: none; }
  .cs-platform-stat__num { font-size: 1rem; }
  .cs-platform-stat__label { font-size: 0.5rem; letter-spacing: 0.06em; }
}

/* ─── ACCORDION (brief / idea / result) ─── */
.cs-accordion {
  border-top: 1px solid var(--border);
}

.cs-accordion__item {
  border-bottom: 1px solid var(--border);
}

.cs-accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
}

.cs-accordion__label {
  font-family: var(--font-label);
  font-size: clamp(1rem, 1.8vw, 1.3rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--text);
}

.cs-accordion__icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s, background 0.2s;
  color: var(--text);
}

.cs-accordion__icon svg {
  width: 14px;
  height: 14px;
  transition: transform 0.3s;
}

.cs-accordion__item.is-open .cs-accordion__icon {
  background: var(--text);
  color: var(--bg);
}

.cs-accordion__item.is-open .cs-accordion__icon svg {
  transform: rotate(45deg);
}

.cs-accordion__body {
  display: none;
  padding-bottom: 28px;
  max-width: 680px;
}

.cs-accordion__item.is-open .cs-accordion__body {
  display: block;
}

.cs-accordion__body p {
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ─── META STRIP ─── */
.cs-meta-strip {
  border-bottom: 1px solid var(--border);
  padding-block: clamp(20px, 3vw, 32px);
}

.cs-meta-strip__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 32px 48px;
}

/* ─── 16:9 VIDEO EMBED ─── */
.cs-video-embed {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #111;
}

.cs-video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

/* ─── LANDSCAPE VIDEO PAIR ─── */
.cs-video-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 640px) {
  .cs-video-pair { grid-template-columns: 1fr; }
}

/* ─── LANDING PAGE CAROUSEL ─── */
.cs-lp-carousel {
  position: relative;
}

.cs-lp-wrap {
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.cs-lp-track {
  display: flex;
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.cs-lp-slide {
  flex: 0 0 100%;
}

.cs-lp-slide img {
  width: 100%;
  display: block;
}

.cs-lp-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 16px;
}

/* ─── SHORTS / PORTRAIT VIDEO GRID ─── */
.cs-shorts-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: clamp(28px, 4vw, 48px);
}

.cs-short {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 9 / 16;
  background: #111;
}

.cs-short iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

@media (max-width: 768px) {
  .cs-shorts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .cs-shorts-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
}

/* ─── SCROLLABLE PANEL (kickstarter page preview) ─── */
.cs-scroll-panel {
  max-height: 680px;
  overflow-y: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  scrollbar-width: thin;
  scrollbar-color: rgba(0,0,0,0.15) transparent;
}

.cs-scroll-panel img {
  width: 100%;
  display: block;
  border-radius: 0;
}

.cs-scroll-panel::-webkit-scrollbar { width: 4px; }
.cs-scroll-panel::-webkit-scrollbar-track { background: transparent; }
.cs-scroll-panel::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.2); border-radius: 2px; }

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .cs-overview__grid {
    grid-template-columns: 1fr 1fr;
  }

  .cs-overview__desc {
    grid-column: 1 / -1;
    border-top: 1px solid var(--border);
    padding-left: clamp(24px, 3.5vw, 44px);
  }

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

  .cs-split--text-right .cs-split__text { order: 1; }
  .cs-split--text-right .cs-split__visual { order: 2; }

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

@media (max-width: 640px) {
  .cs-overview__grid {
    grid-template-columns: 1fr 1fr;
  }

  .cs-overview__stat:nth-child(3) {
    border-right: none;
  }

  .cs-grid--3 { grid-template-columns: 1fr 1fr; }
  .cs-grid--2 { grid-template-columns: 1fr; }

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

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

  .cs-page-nav__link--next {
    border-left: none;
    border-top: 1px solid var(--border);
    text-align: left;
  }
}