/* =============================================
   HALVE CAMPAIGN CASE STUDY — Scoped to .halve-cs
   ============================================= */

/* Google Fonts for design system samples only */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500&family=Space+Grotesk:wght@600;700&display=swap');

/* ── Layout ── */
.halve-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
}

/* ── Section label (shared pattern) ── */
.halve-section-label {
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: lowercase;
  color: #666;
  margin-bottom: 1.6rem;
}

/* ── Hero ── */
.halve-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: calc(var(--header-height, 64px) + 3rem);
  padding-bottom: 2.5rem;
  text-align: center;
}
.halve-hero > .halve-back {
  align-self: flex-start;
}

.halve-back {
  display: inline-block;
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: lowercase;
  color: #888;
  text-decoration: none;
  padding: 0.35rem 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.04);
  opacity: 0.7;
  transition: opacity 0.3s ease, border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}
.halve-back:hover {
  opacity: 1;
  color: #C2410C;
  border-color: rgba(194, 65, 12, 0.4);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(194, 65, 12, 0.08);
}

.halve-kicker {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: lowercase;
  color: #666;
  margin-top: 1.5rem;
  margin-bottom: 0.6rem;
}

.halve-title {
  --cs-flow-p: 0;
  font-size: clamp(2.6rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  text-transform: lowercase;
  color: color-mix(in srgb, #ffffff calc((1 - var(--cs-flow-p)) * 100%), var(--page-accent, #C2410C));
  text-shadow:
    0 0 calc(10px * var(--cs-flow-p)) rgba(194, 65, 12, 0.45),
    0 0 calc(28px * var(--cs-flow-p)) rgba(194, 65, 12, 0.15);
  transition: color 0.4s ease, text-shadow 0.4s ease;
  margin-bottom: 1rem;
}

.halve-subtitle {
  font-size: clamp(0.95rem, 1.4vw, 1.1rem);
  line-height: 1.6;
  color: #999;
  max-width: 640px;
  margin: 0 auto 2rem;
}

/* ── Meta grid ── */
.halve-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  max-width: 700px;
  margin: 0 auto;
}

.halve-meta-item {
  padding: 1rem 1.2rem;
  border: 1px solid #222;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.02);
  text-align: left;
}

.halve-meta-label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: lowercase;
  color: #666;
  margin-bottom: 0.35rem;
}

.halve-meta-value {
  display: block;
  font-size: 0.9rem;
  color: #ccc;
  line-height: 1.45;
}

/* ── Overview ── */
.halve-overview {
  padding: 3rem 0;
  border-top: 1px solid #1a1a1a;
}

.halve-overview-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 3rem;
  align-items: start;
}

.halve-overview-text h2 {
  font-size: clamp(1.4rem, 2.2vw, 1.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 1rem;
}

.halve-overview-text p {
  font-size: 0.95rem;
  line-height: 1.65;
  color: #999;
}

.halve-overview-stats {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.halve-stat {
  padding: 1rem 1.2rem;
  border: 1px solid #222;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.02);
}

.halve-stat-number {
  display: block;
  font-size: 1.8rem;
  font-weight: 700;
  color: #C2410C;
  line-height: 1;
  margin-bottom: 0.3rem;
}

.halve-stat-label {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: lowercase;
  color: #888;
}

/* ── Design system strip ── */
.halve-system {
  padding: 3rem 0;
  border-top: 1px solid #1a1a1a;
}

.halve-system-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.halve-swatches {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.halve-swatch {
  flex: 1 1 120px;
  min-width: 100px;
  padding: 1.2rem 1rem 0.8rem;
  border-radius: 10px;
  border: 1px solid #2a2a2a;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 80px;
}

.halve-swatch span:first-child {
  font-size: 0.82rem;
  font-weight: 600;
}

.halve-swatch span:last-child {
  font-size: 0.72rem;
  opacity: 0.7;
  margin-top: 0.5rem;
}

/* ── Light swatch contrast ── */
.halve-swatch.is-light { color: #1C1917; }
.halve-swatch.is-light span:last-child { opacity: 0.5; }

/* ── Swatch hover lift ── */
.halve-swatch {
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.halve-swatch:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

/* ── Swatch stagger reveal ── */
.halve-system .halve-swatch {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease-out, transform 0.4s ease-out, box-shadow 0.25s ease;
}
.halve-system.is-in .halve-swatch:nth-child(1) { opacity: 1; transform: translateY(0); transition-delay: 0ms; }
.halve-system.is-in .halve-swatch:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 60ms; }
.halve-system.is-in .halve-swatch:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 120ms; }
.halve-system.is-in .halve-swatch:nth-child(4) { opacity: 1; transform: translateY(0); transition-delay: 180ms; }
.halve-system.is-in .halve-swatch:nth-child(5) { opacity: 1; transform: translateY(0); transition-delay: 240ms; }

.halve-type-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.halve-type-sample {
  padding: 1.2rem;
  border: 1px solid #222;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.02);
}

.halve-type-label {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: lowercase;
  color: #666;
  margin-bottom: 0.8rem;
}

.halve-type-preview {
  display: block;
  color: #ddd;
}

/* ── Campaign walkthrough ── */
.halve-walkthrough {
  padding: 3rem 0;
  border-top: 1px solid #1a1a1a;
}

.halve-touchpoint {
  margin-bottom: 4rem;
}
.halve-touchpoint:last-child {
  margin-bottom: 0;
}

.halve-touchpoint-header {
  display: flex;
  gap: 1.2rem;
  align-items: flex-start;
  margin-bottom: 2rem;
}

.halve-touchpoint-number {
  font-size: 1.6rem;
  font-weight: 700;
  color: #C2410C;
  line-height: 1;
  flex-shrink: 0;
  min-width: 2.2rem;
}

.halve-touchpoint-title {
  font-size: clamp(1.1rem, 1.6vw, 1.3rem);
  font-weight: 700;
  color: #fff;
  text-transform: lowercase;
  letter-spacing: 0.02em;
  margin-bottom: 0.4rem;
}

.halve-touchpoint-desc {
  font-size: 0.9rem;
  line-height: 1.55;
  color: #888;
}

/* ── Mockup frames ── */
.halve-touchpoint-media {
  width: 100%;
}

.halve-mockup-pair {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  justify-content: center;
}

.halve-mockup {
  border: 1px solid #333;
  border-radius: 10px;
  overflow: hidden;
  background: #111;
}

.halve-mockup img {
  width: 100%;
  height: auto;
  display: block;
}

.halve-mockup--desktop {
  flex: 0 1 65%;
  max-width: 700px;
}

.halve-mockup--mobile {
  flex: 0 1 25%;
  max-width: 260px;
}

.halve-mockup--centered {
  max-width: 600px;
  margin: 0 auto;
}

/* Scrollable artifact frame — tall emails and landing pages */
.halve-mockup--scroll {
  max-height: 600px;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
}

.halve-mockup--scroll img {
  width: 100%;
  height: auto;
  display: block;
  max-height: none;
  object-fit: unset;
}

/* Subtle full-view link */
.halve-fullview {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: lowercase;
  color: #C2410C;
  text-decoration: none;
  border-bottom: 1px solid rgba(194, 65, 12, 0.3);
  transition: border-color 0.2s ease;
}
.halve-fullview:hover {
  border-color: #C2410C;
}

/* Social ad pair */
.halve-mockup-pair--social {
  gap: 2rem;
  justify-content: center;
}

.halve-mockup--story {
  flex: 0 0 auto;
  width: 240px;
}

.halve-mockup--feed {
  flex: 0 0 auto;
  width: 320px;
}

/* ── Campaign flow ── */
.halve-flow {
  padding: 3rem 0;
  border-top: 1px solid #1a1a1a;
}

.halve-flow-media {
  border: 1px solid #333;
  border-radius: 10px;
  overflow: hidden;
  background: #111;
}

.halve-flow-media img {
  width: 100%;
  height: auto;
  display: block;
}

/* ── Production notes ── */
.halve-notes {
  padding: 3rem 0;
  border-top: 1px solid #1a1a1a;
}

.halve-notes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.halve-note {
  padding: 1.4rem 1.3rem;
  border: 1px solid #222;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.02);
}

.halve-note h4 {
  font-size: 0.88rem;
  font-weight: 600;
  color: #fff;
  text-transform: lowercase;
  margin-bottom: 0.5rem;
}

.halve-note p {
  font-size: 0.85rem;
  line-height: 1.55;
  color: #888;
}

/* ── Footer / back ── */
.halve-footer {
  padding: 3rem 0 4rem;
  border-top: 1px solid #1a1a1a;
  text-align: center;
}

.halve-back--bottom {
  font-size: 0.9rem;
}

/* ── Expand button (scrollable frames) ── */
.halve-mockup--scroll {
  position: relative;
}

.halve-expand {
  position: sticky;
  top: 0;
  float: right;
  z-index: 2;
  margin: 0.85rem 0.85rem 0 0;
  padding: 0.35rem 0.9rem;
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: lowercase;
  color: #ddd;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 100px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  opacity: 0.45;
  transition: opacity 0.25s ease, border-color 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

.halve-mockup--scroll:hover .halve-expand,
.halve-expand:focus-visible {
  opacity: 1;
}

.halve-expand:hover {
  color: #C2410C;
  border-color: rgba(194, 65, 12, 0.4);
  box-shadow: 0 2px 12px rgba(194, 65, 12, 0.12);
}

.halve-expand:focus-visible {
  outline: 2px solid #C2410C;
  outline-offset: 2px;
}

/* ── Clickable static frames ── */
.halve-mockup--clickable {
  cursor: pointer;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.halve-mockup--clickable:hover {
  border-color: rgba(194, 65, 12, 0.35);
  box-shadow: 0 4px 20px rgba(194, 65, 12, 0.08);
}

/* ── Lightbox ── */
.halve-lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(12px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.halve-lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.halve-lightbox-panel {
  position: relative;
  max-width: 90vw;
  max-height: 88vh;
}

.halve-lightbox-img {
  display: block;
  max-width: 90vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: 6px;
}

.halve-lightbox-close {
  position: absolute;
  top: -2.2rem;
  right: -0.5rem;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  padding: 0.5rem;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.halve-lightbox-close:hover {
  opacity: 1;
}

.halve-lightbox-close:focus-visible {
  outline: 2px solid #C2410C;
  outline-offset: 2px;
}

/* ── Comet activation (--cs-flow-p driven) ── */
/* Gray-base: muted labels that blend from #666 → rust */
.halve-cs .halve-section-label,
.halve-cs .halve-type-label.halve-flow-target {
  --cs-flow-p: 0;
  color: color-mix(in srgb, #666 calc((1 - var(--cs-flow-p)) * 100%), var(--page-accent, #C2410C));
  text-shadow:
    0 0 calc(10px * var(--cs-flow-p)) rgba(194, 65, 12, 0.45),
    0 0 calc(28px * var(--cs-flow-p)) rgba(194, 65, 12, 0.15);
  transition: color 0.4s ease, text-shadow 0.4s ease;
}

/* White-base: headings/titles that blend from #fff → rust */
.halve-cs .halve-touchpoint-title,
.halve-cs .halve-flow-target:not(.halve-type-label) {
  --cs-flow-p: 0;
  color: color-mix(in srgb, #ffffff calc((1 - var(--cs-flow-p)) * 100%), var(--page-accent, #C2410C));
  text-shadow:
    0 0 calc(10px * var(--cs-flow-p)) rgba(194, 65, 12, 0.45),
    0 0 calc(28px * var(--cs-flow-p)) rgba(194, 65, 12, 0.15);
  transition: color 0.4s ease, text-shadow 0.4s ease;
}

/* Production note card titles glow on hover (not comet stops) */
.halve-cs .halve-note:hover h4.halve-flow-target {
  --cs-flow-p: 1;
}

/* ── Hero entrance animation ── */
@keyframes halveReveal {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

.halve-hero > .halve-back    { opacity: 0; animation: halveReveal 0.7s 0.2s ease-out forwards; }
.halve-hero > .halve-kicker  { opacity: 0; animation: halveReveal 0.7s 0.35s ease-out forwards; }
.halve-hero > .halve-title   { opacity: 0; animation: halveReveal 0.8s 0.5s cubic-bezier(0.22, 1, 0.36, 1) forwards; }
.halve-hero > .halve-subtitle{ opacity: 0; animation: halveReveal 0.8s 0.7s ease-out forwards; }
.halve-hero > .halve-meta    { opacity: 0; animation: halveReveal 0.8s 0.9s ease-out forwards; }

/* ── Section scroll reveal ── */
.halve-overview,
.halve-system,
.halve-walkthrough,
.halve-flow,
.halve-notes {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.halve-overview.is-in,
.halve-system.is-in,
.halve-walkthrough.is-in,
.halve-flow.is-in,
.halve-notes.is-in {
  opacity: 1;
  transform: translateY(0);
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  .halve-hero > .halve-back,
  .halve-hero > .halve-kicker,
  .halve-hero > .halve-title,
  .halve-hero > .halve-subtitle,
  .halve-hero > .halve-meta {
    opacity: 1;
    animation: none;
  }

  .halve-overview,
  .halve-system,
  .halve-walkthrough,
  .halve-flow,
  .halve-notes {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .halve-back {
    transition: none;
  }

  .halve-lightbox {
    transition: none;
  }

  .halve-expand {
    opacity: 0.7;
    transition: none;
  }

  .halve-mockup--clickable {
    transition: none;
  }

  .halve-swatch {
    transition: none;
  }
  .halve-swatch:hover {
    transform: none;
    box-shadow: none;
  }
  .halve-system .halve-swatch {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* =============================================
   RESPONSIVE
   ============================================= */

@media (max-width: 768px) {
  .halve-meta {
    grid-template-columns: 1fr;
  }

  .halve-overview-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .halve-type-row {
    grid-template-columns: 1fr;
  }

  .halve-mockup-pair {
    flex-direction: column;
    align-items: center;
  }

  .halve-mockup--desktop {
    flex: none;
    width: 100%;
    max-width: none;
  }

  .halve-mockup--mobile {
    flex: none;
    width: 60%;
    max-width: 260px;
  }

  .halve-mockup--scroll {
    max-height: none;
    overflow: visible;
  }

  .halve-expand {
    position: absolute;
    top: 0.85rem;
    right: 0.85rem;
    float: none;
    opacity: 0.6;
  }

  .halve-mockup-pair--social {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }

  .halve-mockup--story {
    width: 40%;
    min-width: 160px;
  }

  .halve-mockup--feed {
    width: 50%;
    min-width: 200px;
  }

  .halve-notes-grid {
    grid-template-columns: 1fr;
  }

  .halve-touchpoint-header {
    flex-direction: column;
    gap: 0.6rem;
  }
}

@media (max-width: 480px) {
  .halve-hero {
    padding-top: calc(var(--header-height, 64px) + 2rem);
  }

  .halve-swatches {
    gap: 0.5rem;
  }

  .halve-swatch {
    flex: 1 1 80px;
    min-width: 70px;
    padding: 0.8rem 0.6rem 0.6rem;
    min-height: 60px;
  }

  .halve-swatch span:first-child {
    font-size: 0.7rem;
  }

  .halve-swatch span:last-child {
    font-size: 0.62rem;
  }
}