/* ==========================================================================
   CASE STUDY LAYOUT — v4.0
   Extends portfolio-v4.css with case-specific components
   ========================================================================== */

/* ─── CASE HERO ─────────────────────────────────────────────────────────────── */
.case-hero {
  min-height: 100svh;
  display: grid;
  grid-template-rows: 1fr auto;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--muted-line);
}

.case-hero-bg {
  position: absolute; inset: 0;
  z-index: 0;
}
.case-hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(0.42) contrast(106%);
  transform: scale(1.03);
}
.case-hero-bg::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(8,8,8,0.92) 0%,
    rgba(8,8,8,0.60) 35%,
    rgba(8,8,8,0.85) 75%,
    var(--void) 100%
  );
}
:root.light-mode .case-hero-bg img {
  filter: brightness(0.85) contrast(102%);
}
:root.light-mode .case-hero-bg::after {
  background: linear-gradient(
    to bottom,
    rgba(242,242,238,0.94) 0%,
    rgba(242,242,238,0.65) 35%,
    rgba(242,242,238,0.90) 75%,
    var(--void) 100%
  );
}

.case-hero-body {
  position: relative; z-index: 1;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 0 var(--gutter) clamp(40px,5vw,80px);
}

.case-back {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--text-secondary); margin-bottom: 40px;
  transition: color .2s ease, gap .3s var(--ease-out-expo);
}
.case-back:hover { color: var(--ultra); gap: 14px }
.case-back .arrow { transition: transform .3s var(--ease-out-expo) }
.case-back:hover .arrow { transform: translateX(-4px) }

.case-category {
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 2px; text-transform: uppercase;
  color: var(--ultra-text); margin-bottom: 16px;
  display: flex; align-items: center; gap: 12px;
}
.case-category::before { content: ''; display: block; width: 32px; height: 1px; background: var(--ultra) }

.case-headline {
  font-family: var(--font-display);
  font-size: clamp(3rem,8vw,10rem);
  font-weight: 800; line-height: .9; letter-spacing: -.04em;
  text-transform: uppercase; color: var(--bone);
  margin-bottom: clamp(24px,3vw,48px);
}

.case-meta-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--muted-line);
  border-top: 1px solid var(--muted-line);
  margin: 0 calc(-1 * var(--gutter));
}
.case-meta-col {
  padding: 24px var(--gutter);
  background: var(--void);
  display: flex; flex-direction: column; gap: 6px;
}
.case-meta-label {
  font-family: var(--font-mono); font-size: 9px;
  letter-spacing: 2px; text-transform: uppercase; color: var(--text-dim);
}
.case-meta-val { font-size: 14px; font-weight: 600; color: var(--text-primary) }

/* ─── CASE BODY ─────────────────────────────────────────────────────────────── */
.case-body { padding-bottom: clamp(80px,10vw,160px) }

/* Intro block */
.case-intro {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: clamp(48px,6vw,120px);
  padding: clamp(48px,6vw,96px) 0;
  border-bottom: 1px solid var(--muted-line);
}
.case-intro-label {
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 2px; text-transform: uppercase; color: var(--ultra-text);
  padding-top: 6px;
}
.case-intro-text {
  font-size: clamp(1rem,1.8vw,1.3rem); font-weight: 400;
  color: var(--text-secondary); line-height: 1.75;
}
.case-intro-text strong { color: var(--text-primary); font-weight: 600 }

/* Section divider */
.case-section {
  padding: clamp(48px,6vw,96px) 0;
  border-bottom: 1px solid var(--muted-line);
}
.case-section:last-child { border-bottom: none }

.case-section-eyebrow {
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 2px; text-transform: uppercase; color: var(--ultra-text);
  margin-bottom: 16px; display: flex; align-items: center; gap: 12px;
}
.case-section-eyebrow::before { content: ''; display: block; width: 24px; height: 1px; background: var(--ultra) }
.case-section-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem,3vw,3rem); font-weight: 800;
  letter-spacing: -.03em; text-transform: uppercase; color: var(--bone);
  line-height: 1.05; margin-bottom: 24px;
}
.case-section-body {
  font-size: clamp(14px,1.2vw,16px); color: var(--text-secondary); line-height: 1.75;
  max-width: 680px;
}
.case-section-body p + p { margin-top: 1em }
.case-section-body strong { color: var(--text-primary); font-weight: 600 }

/* 2-col text layout */
.case-cols-2 {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(32px,4vw,80px); align-items: start;
  margin-top: 32px;
}

/* Full-bleed image */
.case-image-full {
  position: relative;
  background: var(--carbon);
  margin: 32px 0;
  border: 1px solid var(--muted-line);
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.case-image-full img {
  width: 100%;
  height: auto;
  display: block;
  filter: none;
}
.case-image-full .img-caption {
  padding: 14px var(--gutter);
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 1px; text-transform: uppercase;
  color: var(--text-dim);
  border-top: 1px solid var(--muted-line);
}

/* 2-col & 3-col image grids — matching frame dimensions */
.case-image-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  align-items: stretch;
  gap: 24px;
  background: transparent;
  margin-top: 36px;
}
.case-image-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: stretch;
  gap: 20px;
  background: transparent;
  margin-top: 36px;
}
@media(max-width: 768px) {
  .case-image-grid-2,
  .case-image-grid-3 {
    grid-template-columns: 1fr;
  }
}
.case-img-cell {
  background: var(--carbon);
  position: relative;
  border: 1px solid var(--muted-line);
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 0;
}
.case-img-cell.wide { aspect-ratio: auto }
.case-img-cell.tall { aspect-ratio: auto }

/* Uniform frame: image fills the entire frame without changing proportions or frame dimension */
.case-img-cell img {
  width: 100% !important;
  height: 340px !important;
  max-height: 340px !important;
  min-height: 340px !important;
  object-fit: cover !important;
  object-position: center !important;
  display: block !important;
  filter: none !important;
  transition: transform .35s var(--ease-out-expo);
}
@media(max-width: 900px) {
  .case-img-cell img {
    height: 240px !important;
    max-height: 240px !important;
    min-height: 240px !important;
  }
}
.case-img-cell:hover img { transform: scale(1.03) }
.case-img-cell .img-caption {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  padding: 14px 18px !important;
  margin: 0 !important;
  border-top: 1px solid var(--muted-line) !important;
  font-family: var(--font-mono) !important;
  font-size: 11px !important;
  line-height: 1.5 !important;
  color: var(--text-dim) !important;
  background: rgba(14, 18, 24, 0.65) !important;
}

/* Quote / insight block */
.case-quote {
  border-left: 2px solid var(--ultra);
  padding: 24px 0 24px 32px; margin: 40px 0;
}
.case-quote-text {
  font-family: var(--font-display);
  font-size: clamp(1.2rem,2vw,2rem); font-weight: 800;
  letter-spacing: -.03em; color: var(--bone); line-height: 1.2;
}
.case-quote-author {
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--text-dim); margin-top: 12px;
}

/* Insight pill row */
.case-insights {
  display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px;
}
.case-insight {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--muted-line); padding: 10px 16px;
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 1px; text-transform: uppercase; color: var(--text-secondary);
  transition: border-color .2s ease, color .2s ease;
}
.case-insight:hover { border-color: var(--ultra); color: var(--ultra) }
.case-insight::before { content: '↳'; color: var(--ultra) }

/* Spec table */
.case-specs {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 1px; background: var(--muted-line);
  margin-top: 32px;
}
.spec-row {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 16px 24px; background: var(--void);
}
.spec-key { font-family: var(--font-mono); font-size: 10px; letter-spacing: 1px; text-transform: uppercase; color: var(--text-dim) }
.spec-val { font-size: 14px; font-weight: 600; color: var(--text-primary) }

/* ─── CASE NAV (prev/next) ──────────────────────────────────────────────────── */
.case-nav {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 1px; background: var(--muted-line);
  border-top: 1px solid var(--muted-line);
}
.case-nav-item {
  background: var(--void); padding: 40px var(--gutter);
  display: flex; flex-direction: column; gap: 12px;
  text-decoration: none; color: inherit;
  transition: background .3s ease;
}
.case-nav-item:hover { background: var(--ultra-dim) }
.case-nav-dir {
  font-family: var(--font-mono); font-size: 9px;
  letter-spacing: 2px; text-transform: uppercase; color: var(--text-dim);
}
.case-nav-name {
  font-family: var(--font-display);
  font-size: clamp(1.2rem,2vw,2rem); font-weight: 800;
  letter-spacing: -.03em; text-transform: uppercase; color: var(--bone);
}
.case-nav-item.next { text-align: right }

/* ─── RESPONSIVE ────────────────────────────────────────────────────────────── */
@media(max-width:1024px){
  .case-meta-row { grid-template-columns: repeat(2,1fr) }
  .case-intro { grid-template-columns: 1fr }
  .case-cols-2 { grid-template-columns: 1fr }
  .case-image-grid-3 { grid-template-columns: 1fr 1fr }
  .case-specs { grid-template-columns: 1fr }
}
@media(max-width:768px){
  .case-meta-row { grid-template-columns: 1fr 1fr }
  .case-image-grid-2 { grid-template-columns: 1fr }
  .case-image-grid-3 { grid-template-columns: 1fr }
  .case-nav { grid-template-columns: 1fr }
  .case-headline { font-size: clamp(2.5rem,10vw,5rem) }
}

/* ─── 3D WEBGL INTERACTIVE VIEWPORT ────────────────────────────────────────── */
.viewer-3d-wrapper {
  position: relative;
  width: 100%;
  height: clamp(450px, 60vh, 640px);
  background: #080a0e;
  border: 1px solid var(--muted-line);
  margin: 32px 0 48px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}
.viewer-3d-canvas {
  width: 100%;
  height: 100%;
  display: block;
}
.viewer-3d-hud {
  position: absolute;
  top: 16px; left: 20px; right: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
  z-index: 10;
}
.viewer-3d-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(14, 18, 24, 0.85);
  border: 1px solid rgba(0, 210, 255, 0.3);
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: #00d2ff;
  backdrop-filter: blur(8px);
}
.viewer-3d-badge .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #00d2ff;
  box-shadow: 0 0 8px #00d2ff;
  animation: pulse 2s infinite ease-in-out;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}
.viewer-3d-toolbar {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(14, 18, 24, 0.88);
  border: 1px solid var(--muted-line);
  padding: 6px 10px;
  backdrop-filter: blur(12px);
  z-index: 10;
  max-width: 95%;
  flex-wrap: wrap;
  justify-content: center;
}
.btn-3d {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 8px 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-3d:hover {
  border-color: var(--ultra);
  color: var(--ultra);
  background: rgba(0, 210, 255, 0.06);
}
.btn-3d.active {
  border-color: #00d2ff;
  color: #000;
  background: #00d2ff;
  font-weight: 600;
}
.color-swatches-group {
  display: flex;
  align-items: center;
  gap: 6px;
  padding-left: 8px;
  border-left: 1px solid var(--muted-line);
}
.color-swatch-btn {
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.color-swatch-btn:hover { transform: scale(1.18); }
.color-swatch-btn.active { border-color: #ffffff; transform: scale(1.15); box-shadow: 0 0 10px rgba(255,255,255,0.4); }

/* ─── THESIS DATA & COMPARATIVE CARDS ───────────────────────────────────────── */
.thesis-deep-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 32px 0 48px;
}
@media(max-width: 900px) {
  .thesis-deep-grid { grid-template-columns: 1fr; }
}
.thesis-deep-card {
  background: var(--void);
  border: 1px solid var(--muted-line);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.25s ease;
}
.thesis-deep-card:hover { border-color: var(--ultra); }
.thesis-card-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--ultra);
}
.thesis-card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--bone);
  line-height: 1.2;
}
.thesis-card-body {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-secondary);
}
.thesis-card-meta {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--muted-line);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* ─── PRESS & EDITORIAL FEATURE (YANKO DESIGN & MEDIA) ──────────────────────── */
.press-feature-card {
  background: var(--carbon);
  border: 1px solid var(--muted-line);
  position: relative;
  overflow: hidden;
  margin: 32px 0 48px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.press-feature-card:hover {
  border-color: var(--ultra);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
}
.press-feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--ultra);
}
.press-card-inner {
  padding: clamp(24px, 4vw, 44px);
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 36px;
  align-items: center;
}
@media (max-width: 960px) {
  .press-card-inner {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}
.press-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}
.press-brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--bone);
  background: var(--deep);
  border: 1px solid var(--muted-line);
  padding: 6px 14px;
}
.press-brand-badge .brand-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ultra);
  box-shadow: 0 0 8px var(--ultra);
}
.press-date-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-dim);
}
.press-article-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.4vw, 2.2rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--bone);
  margin-bottom: 20px;
}
.press-quote-box {
  background: var(--deep);
  border-left: 2px solid var(--ultra);
  padding: 18px 20px;
  margin-bottom: 20px;
}
.press-quote-text {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
  font-style: italic;
}
.press-quote-author {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--ultra-text);
  margin-top: 10px;
  display: block;
}
.press-narrative {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.press-cta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.press-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--ultra);
  color: #ffffff !important;
  padding: 12px 22px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.press-cta-btn:hover {
  background: #0000ff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(26,26,255,0.35);
  color: #ffffff !important;
}
.press-secondary-link {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s ease;
}
.press-secondary-link:hover {
  color: var(--bone);
  text-decoration: underline;
}
.press-card-media {
  position: relative;
  background: var(--void);
  border: 1px solid var(--muted-line);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.press-card-media img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s var(--ease-out-expo);
}
.press-feature-card:hover .press-card-media img {
  transform: scale(1.04);
}
.press-media-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 14px 18px;
  background: linear-gradient(to top, rgba(8,8,8,0.92) 0%, rgba(8,8,8,0.5) 70%, transparent 100%);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--bone);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.press-media-overlay span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}