/* ============================================================
   Case study page layout — vertical long-form
   Linked by work/*.html (after site.css).
   ============================================================ */

.cs-main { display: block; }

/* Wilvetica web font — used by the type sandbox (loads only where applied) */
@font-face {
  font-family: 'Wilvetica';
  src: url('../assets/fonts/wilvetica.woff') format('woff');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* Type sandbox — thin inline control bar above a large editable specimen */
.cs-font-download {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--fg);
  border: 1px solid var(--fg);
  padding: 0.6rem 1rem;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.cs-font-download:hover { background: var(--accent); border-color: var(--accent); color: var(--bg); }
.cs-font-download-arrow { font-size: 0.95em; }

/* Centered download prompt below the sandbox */
.tt-download {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
  text-align: center;
  margin-top: 3rem;
}
.tt-download-text {
  font-family: var(--font-body);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  max-width: 36ch;
}

/* Framed tester card (dark by default; Invert → light) */
.tt {
  display: flex;
  flex-direction: column;
  min-height: 60vh;
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 2rem;
  background: #0d0d0d;
  color: #fff;
  transition: background 0.35s var(--ease), color 0.35s var(--ease);
}
.tt:last-of-type { margin-bottom: 0; }
.tt.is-light { background: var(--bg); color: var(--fg); box-shadow: inset 0 0 0 1px var(--border); }

.tt-input {
  flex: 1;
  font-family: 'Wilvetica', var(--font-display);
  font-weight: 400;
  font-size: 96px; /* synced by JS */
  line-height: 1.05;
  letter-spacing: -0.01em;
  padding: 2.5rem;
  outline: none;
  word-break: break-word;
  overflow-wrap: break-word;
  cursor: text;
}
.tt[data-mode="body"] .tt-input { line-height: 1.4; font-size: 22px; }
.tt-input:empty::before { content: attr(data-placeholder); opacity: 0.4; }

/* Control bar inside the frame */
.tt-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  border-top: 1px solid rgba(255,255,255,0.34);
}
.tt.is-light .tt-bar { border-top-color: var(--border); }

.tt-field, .tt-btn {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.85rem 1.1rem;
  border-right: 1px solid rgba(255,255,255,0.34);
  font-family: var(--font-body);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
}
.tt.is-light .tt-field, .tt.is-light .tt-btn { border-right-color: var(--border); }
.tt-bar > *:last-child { border-right: none; }

.tt-field { color: rgba(255,255,255,0.85); }
.tt.is-light .tt-field { color: var(--muted); }
.tt-val { color: #fff; min-width: 2.5ch; text-align: right; }
.tt.is-light .tt-val { color: var(--fg); }
.tt-field--slider { flex: 1 1 200px; min-width: 170px; }

.tt-size-range, .tt-track-range {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 1px;
  background: rgba(255,255,255,0.5);
  cursor: pointer;
}
.tt.is-light .tt-size-range, .tt.is-light .tt-track-range { background: var(--border); }
.tt-size-range::-webkit-slider-thumb,
.tt-track-range::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--accent); cursor: pointer;
}
.tt-size-range::-moz-range-thumb,
.tt-track-range::-moz-range-thumb {
  width: 12px; height: 12px; border: none; border-radius: 50%;
  background: var(--accent); cursor: pointer;
}

.tt-btn {
  background: transparent;
  border: none;
  border-right: 1px solid rgba(255,255,255,0.34);
  color: #fff;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.tt.is-light .tt-btn { color: var(--fg); }
.tt-btn:hover, .tt-btn[aria-pressed="true"] { background: var(--accent); color: #fff; }
.tt.is-light .tt-btn:hover, .tt.is-light .tt-btn[aria-pressed="true"] { color: var(--bg); }

/* Alignment group */
.tt-align { gap: 0.45rem; }
.tt-align-btn {
  background: transparent; border: none; padding: 0.25rem; cursor: pointer;
  color: rgba(255,255,255,0.72); line-height: 0;
  transition: color 0.2s var(--ease);
}
.tt.is-light .tt-align-btn { color: var(--muted); }
.tt-align-btn[aria-pressed="true"], .tt-align-btn:hover { color: var(--accent); }
.tt-align-btn svg { display: block; }

.cs-typetester { padding-top: 4.5rem; padding-bottom: 4.5rem; }

/* Hero */
.cs-hero {
  position: relative;
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2.5rem;
  overflow: hidden;
  color: var(--bg);
}

.cs-hero .img-frame {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.cs-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(to top, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.15) 40%, rgba(0,0,0,0) 70%);
  pointer-events: none;
}

.cs-hero > .cs-hero-inner { position: relative; z-index: 2; }

.cs-hero-eyebrow {
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  margin-bottom: 1.25rem;
}

.cs-hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3rem, 9vw, 8rem);
  line-height: 0.9;
  letter-spacing: -0.025em;
}

/* When the hero image hasn't loaded, fall back to dark bg + dark text */
.cs-hero.no-image { color: var(--fg); }
.cs-hero.no-image::after { background: none; }
.cs-hero.no-image .cs-hero-eyebrow { color: var(--muted); }

/* Overview */
.cs-overview {
  padding: 7rem 2.5rem;
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 1.85fr;
  gap: 5rem;
  align-items: start;
}

.cs-overview-head { position: sticky; top: 6rem; }

.cs-overview-head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 3.8vw, 3rem);
  line-height: 0.95;
  letter-spacing: -0.025em;
  text-transform: uppercase;
}

.cs-overview-body {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  max-width: 68ch;
}

.cs-overview-lead {
  font-family: var(--font-read);
  font-size: clamp(0.92rem, 1.2vw, 1.05rem);
  line-height: 1.65;
  color: var(--fg);
}

.cs-overview-block h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.15rem, 2vw, 1.6rem);
  letter-spacing: -0.015em;
  line-height: 1.1;
  margin-bottom: 0.7rem;
}

.cs-overview-block p {
  font-family: var(--font-read);
  font-size: clamp(0.92rem, 1.2vw, 1.05rem);
  line-height: 1.65;
  color: var(--fg);
}

.cs-overview-block p + p { margin-top: 1rem; }

.cs-meta {
  display: grid;
  gap: 1.75rem;
  border-top: 1px solid var(--border);
  padding-top: 1.75rem;
  margin-top: 2.5rem;
}

/* Horizontal meta row above the intro lead (hybrid layout) */
.cs-intro-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem 3.5rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--border);
}

.cs-meta-item label {
  display: block;
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.4rem;
}

.cs-meta-item span {
  font-size: 0.85rem;
  letter-spacing: 0.01em;
}

/* Section heading shared by process / deliverables */
.cs-section {
  padding: 0 2.5rem 7rem;
}

.cs-section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  margin-bottom: 3rem;
}

.cs-section-head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 3.8vw, 3rem);
  letter-spacing: -0.025em;
  text-transform: uppercase;
  line-height: 0.95;
}

/* Process — alternating asymmetric rows */
.cs-process-rows {
  display: flex;
  flex-direction: column;
  gap: 6rem;
}

.cs-process-row {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

/* Flip every second row */
.cs-process-row:nth-child(even) {
  grid-template-columns: 1fr 1.55fr;
}
.cs-process-row:nth-child(even) .cs-process-figure { order: 2; }
.cs-process-row:nth-child(even) .cs-process-text  { order: 1; }

.cs-process-figure .img-frame {
  aspect-ratio: 16 / 10;
  border-radius: 2px;
}

/* Size variation for rhythm */
.cs-process-row:nth-child(2) .cs-process-figure .img-frame { aspect-ratio: 4 / 5; }
.cs-process-row:nth-child(3) .cs-process-figure .img-frame { aspect-ratio: 5 / 4; }

.cs-process-figure .img-frame::after {
  content: 'IMG';
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.65rem; letter-spacing: 0.15em; color: var(--muted);
}
.cs-process-figure .img-frame.image-loaded::after { display: none; }

.cs-process-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.25rem, 5vw, 4rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--border);
  margin-bottom: 0.5rem;
  transition: color 0.6s var(--ease);
}
.cs-process-row.visible .cs-process-num { color: var(--accent); }

.cs-process-label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.15rem, 1.9vw, 1.65rem);
  letter-spacing: -0.015em;
  line-height: 1.1;
  margin-bottom: 0.8rem;
}

.cs-process-copy {
  font-family: var(--font-read);
  font-size: clamp(0.9rem, 1.1vw, 1rem);
  line-height: 1.65;
  color: var(--fg);
  max-width: 44ch;
}

/* Directional slide-in (paired with .reveal in site.css) */
.cs-process-row.from-left  { transform: translateX(-48px); }
.cs-process-row.from-right { transform: translateX(48px); }
.cs-process-row.visible    { transform: none; }

.cs-caption {
  padding-top: 0.85rem;
  font-size: 0.68rem;
  line-height: 1.65;
  color: var(--muted);
}

/* Full-bleed media band in the Process section (e.g. a motion specimen) */
.cs-process-media {
  position: relative;
  margin-top: 5rem;
  aspect-ratio: 16 / 9;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.cs-process-media video,
.cs-process-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.cs-process-media::after {
  content: 'VIDEO · 16:9';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--muted);
}
.cs-process-media:has(video, img)::after { display: none; }

/* Deliverables — editorial figure system */
.cs-figures {
  counter-reset: fig;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 4.5rem 1.75rem;
}

.cs-figure { counter-increment: fig; margin: 0; }

.cs-figure-img { border-radius: 2px; }

.cs-figure-img::after {
  content: 'DELIVERABLE';
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.65rem; letter-spacing: 0.15em; color: var(--muted);
}
.cs-figure-img.image-loaded::after { display: none; }

.cs-figure-cap {
  display: flex;
  gap: 0.9rem;
  padding-top: 1rem;
}

.cs-fig-no {
  font-family: var(--font-body);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  white-space: nowrap;
  padding-top: 0.2rem;
}
.cs-fig-no::before { content: 'Fig. ' counter(fig, decimal-leading-zero); }

.cs-fig-text {
  font-family: var(--font-read);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--muted);
  max-width: 46ch;
}

/* Variants */
.cs-figure--hero {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 2.4fr 1fr;
  gap: 2.5rem;
  align-items: end;
}
.cs-figure--hero .cs-figure-img { aspect-ratio: 16 / 9; }
.cs-figure--hero .cs-figure-cap {
  flex-direction: column;
  gap: 0.6rem;
  padding: 0 0 0.4rem;
}

.cs-figure--wide { grid-column: 1 / -1; }
.cs-figure--wide .cs-figure-img { aspect-ratio: 16 / 9; }

.cs-figure--half { grid-column: span 6; }
.cs-figure--half .cs-figure-img { aspect-ratio: 4 / 3; }

.cs-figure--tall { grid-column: span 6; }
.cs-figure--tall .cs-figure-img { aspect-ratio: 3 / 4; }

/* Clickable figure linking to a live site */
.cs-figure-img-link { display: block; cursor: pointer; }
.cs-figure-img-link:hover .cs-figure-img img.loaded { transform: scale(1.03); }

.cs-live-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  width: fit-content;
  font-family: var(--font-body);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}
.cs-live-link:hover { border-bottom-color: var(--accent); }

/* Large standalone CTA (e.g. link to a live project) */
.cs-cta {
  display: block;
  margin-top: 4.5rem;
  padding: 3.5rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--fg);
  transition: color 0.3s var(--ease), padding-left 0.4s var(--ease);
}
.cs-cta:hover { color: var(--accent); padding-left: 0.75rem; }

.cs-cta-label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.cs-cta-headline {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.cs-cta-arrow { transition: transform 0.4s var(--ease); }
.cs-cta:hover .cs-cta-arrow { transform: translate(0.6rem, -0.6rem); }

.cs-cta-url {
  display: block;
  margin-top: 1.5rem;
  font-family: var(--font-body);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* Outcome — closing statement */
.cs-outcome {
  border-top: 1px solid var(--border);
  padding: 7rem 2.5rem;
}
.cs-outcome .section-label { display: block; margin-bottom: 1.75rem; }
.cs-outcome-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 3.6vw, 2.9rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  max-width: 26ch;
}

/* Next project */
.cs-next {
  border-top: 1px solid var(--border);
  padding: 5rem 2.5rem;
}

.cs-next a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  text-decoration: none;
  color: var(--fg);
  transition: color 0.3s var(--ease), padding-left 0.4s var(--ease);
}

.cs-next a:hover { color: var(--accent); padding-left: 0.5rem; }

.cs-next-label {
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.75rem;
  display: block;
}

.cs-next-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 5vw, 3.5rem);
  letter-spacing: -0.02em;
}

.cs-next-arrow {
  font-size: 1.5rem;
  color: var(--muted);
  transition: transform 0.35s var(--ease), color 0.3s;
}
.cs-next a:hover .cs-next-arrow { transform: translateX(8px); color: var(--accent); }

/* Responsive */
@media (max-width: 1024px) {
  .cs-hero { padding: 1.5rem; }
  .cs-overview { padding: 5rem 1.5rem; gap: 3rem; }
  .cs-section { padding: 0 1.5rem 5rem; }
  .cs-process-rows { gap: 4.5rem; }
  .cs-process-row { gap: 2.5rem; }
  .cs-next { padding: 4rem 1.5rem; }
}

@media (max-width: 768px) {
  .cs-hero { padding: 1.25rem; height: 80vh; }
  .cs-overview {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding: 3.5rem 1.25rem;
  }
  .cs-overview-head { position: static; }
  .cs-meta { margin-top: 1.75rem; }
  .cs-section { padding: 0 1.25rem 3.5rem; }

  /* Process rows stack: image on top, text below, in source order */
  .cs-process-rows { gap: 3.5rem; }
  .cs-process-row,
  .cs-process-row:nth-child(even) { grid-template-columns: 1fr; gap: 1.25rem; }
  .cs-process-row:nth-child(even) .cs-process-figure { order: 1; }
  .cs-process-row:nth-child(even) .cs-process-text  { order: 2; }
  .cs-process-figure .img-frame,
  .cs-process-row:nth-child(2) .cs-process-figure .img-frame,
  .cs-process-row:nth-child(3) .cs-process-figure .img-frame { aspect-ratio: 3 / 2; }
  .cs-process-num { margin-bottom: 0.6rem; }
  .cs-process-row.from-left,
  .cs-process-row.from-right { transform: translateY(28px); }
  .cs-process-media { margin-top: 3rem; }

  /* Figures stack full-width */
  .cs-figures { grid-template-columns: 1fr; gap: 2.75rem; }
  .cs-figure--hero { grid-template-columns: 1fr; gap: 1rem; align-items: start; }
  .cs-figure--hero .cs-figure-img { aspect-ratio: 16 / 10; }
  .cs-figure--hero .cs-figure-cap { flex-direction: row; padding-top: 0.85rem; }
  .cs-figure--half, .cs-figure--tall, .cs-figure--wide { grid-column: 1 / -1; }
  .cs-figure--half .cs-figure-img,
  .cs-figure--tall .cs-figure-img { aspect-ratio: 4 / 3; }

  .cs-outcome { padding: 4rem 1.25rem; }
  .cs-typetester { padding-top: 3rem; padding-bottom: 3rem; }
  .tt { min-height: 48vh; }
  .tt-input { padding: 1.5rem; }
  .cs-next { padding: 3rem 1.25rem; }
}

@media (max-width: 480px) {
  .cs-hero { padding: 1rem; }
  .cs-overview { padding: 3rem 1rem; }
  .cs-section { padding: 0 1rem 3rem; }
  .cs-outcome { padding: 3.5rem 1rem; }
}