/* ============================================================================
   Inteople v2 — Work / Case Studies
   Hub (filter + card grid) and detail template (snapshot, problem/solution,
   tech, implementation timeline, impact, metrics, visuals, quote).
   Reuses page-hero/breadcrumb (about.css), frames (products.css), cta/footer.
   ========================================================================== */

/* ============================ HUB: FILTER ============================ */
.work-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-7);
}

.work-filter button {
  padding: 0.5rem 1rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink-2);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  transition:
    border-color var(--dur) var(--ease),
    background var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.work-filter button:hover {
  border-color: var(--brand-3);
}

.work-filter button[aria-pressed="true"] {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}

/* ============================ HUB: CARD GRID ============================ */
.case-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-5);
}

.case-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition:
    transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease),
    opacity var(--dur) var(--ease);
}

.case-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.case-card.is-hidden {
  display: none;
}

.case-card-media {
  position: relative;
  background: var(--bg-2);
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.case-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease);
}

.case-card:hover .case-card-media img {
  transform: scale(1.04);
}

.case-card-tagrow {
  position: absolute;
  top: var(--sp-3);
  left: var(--sp-3);
  display: flex;
  gap: var(--sp-2);
}

.case-card-tagrow .badge {
  background: rgba(14, 22, 38, 0.82);
  backdrop-filter: blur(6px);
}

.case-card-body {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  padding: var(--sp-5);
  flex: 1;
}

.case-card-domain {
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-ink);
}

.case-card h3 {
  font-size: var(--fs-h4);
}

.case-card p {
  font-size: var(--fs-sm);
}

.case-card-metrics {
  display: flex;
  gap: var(--sp-5);
  margin-top: auto;
  padding-top: var(--sp-4);
  border-top: 1px solid var(--line);
}

.case-card-metrics .m b {
  display: block;
  font-size: 1.3rem;
  font-weight: var(--fw-black);
  letter-spacing: -0.02em;
  color: var(--ink);
}

.case-card-metrics .m span {
  font-size: var(--fs-xs);
  color: var(--muted);
}

.case-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: var(--fw-semibold);
  font-size: var(--fs-sm);
  color: var(--accent-ink);
}

.case-card-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--dur) var(--ease);
}

.case-card:hover .case-card-link svg {
  transform: translateX(4px);
}

.work-empty {
  display: none;
  padding: var(--sp-7);
  text-align: center;
  color: var(--muted);
}

.work-empty.show {
  display: block;
}

@media (max-width: 820px) {
  .case-cards {
    grid-template-columns: 1fr;
  }
}

/* ============================ HUB: RESULTS BAND ============================ */
.results-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
  text-align: center;
}

.results-band .stat b {
  display: block;
  font-size: clamp(2rem, 1.4rem + 2vw, 3rem);
  font-weight: var(--fw-black);
  letter-spacing: -0.03em;
  color: #fff;
}

.results-band .stat span {
  font-size: var(--fs-sm);
  color: var(--on-dark-muted);
}

@media (max-width: 760px) {
  .results-band {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================ DETAIL: SNAPSHOT BAR ============================ */
.cs-snapshot {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
  padding: var(--sp-5);
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
  margin-top: calc(-1 * clamp(40px, 6vw, 72px));
  position: relative;
  z-index: 5;
}

.cs-snapshot .s b {
  display: block;
  font-size: clamp(1.6rem, 1.2rem + 1.4vw, 2.2rem);
  font-weight: var(--fw-black);
  letter-spacing: -0.03em;
  color: var(--ink);
}

.cs-snapshot .s span {
  font-size: var(--fs-xs);
  color: var(--muted);
}

.cs-snapshot .s + .s {
  border-left: 1px solid var(--line);
  padding-left: var(--sp-4);
}

@media (max-width: 760px) {
  .cs-snapshot {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-5) var(--sp-4);
  }

  .cs-snapshot .s + .s {
    border-left: 0;
    padding-left: 0;
  }
}

/* ============================ DETAIL: META ROW ============================ */
.cs-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-5);
  padding-bottom: var(--sp-6);
  margin-bottom: var(--sp-6);
  border-bottom: 1px solid var(--line);
}

.cs-meta .mi {
  min-width: 120px;
}

.cs-meta .mi .k {
  display: block;
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 2px;
}

.cs-meta .mi .v {
  font-weight: var(--fw-semibold);
  color: var(--ink);
}

/* ============================ DETAIL: PROBLEM / SOLUTION ============================ */
.cs-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
}

.cs-block {
  padding: var(--sp-6);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--surface);
}

.cs-block.problem {
  border-top: 4px solid var(--danger);
}

.cs-block.solution {
  border-top: 4px solid var(--accent);
}

.cs-block .label {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-eyebrow);
  font-weight: var(--fw-bold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--sp-4);
}

.cs-block.problem .label {
  color: var(--danger);
}

.cs-block.solution .label {
  color: var(--accent-ink);
}

.cs-block h3 {
  margin-bottom: var(--sp-3);
}

.cs-block p + p {
  margin-top: var(--sp-3);
}

.cs-list {
  display: grid;
  gap: var(--sp-3);
  margin-top: var(--sp-4);
}

.cs-list li {
  position: relative;
  padding-left: var(--sp-6);
  font-size: var(--fs-sm);
  color: var(--ink-2);
}

.cs-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 4px;
}

.cs-block.problem .cs-list li::before {
  background: color-mix(in srgb, var(--danger) 18%, transparent);
  box-shadow: inset 0 0 0 2px var(--danger);
}

.cs-block.solution .cs-list li::before {
  background: var(--accent-soft);
  box-shadow: inset 0 0 0 2px var(--accent);
}

@media (max-width: 820px) {
  .cs-split {
    grid-template-columns: 1fr;
  }
}

/* ============================ DETAIL: TECH GRID ============================ */
.cs-tech {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--sp-4);
}

.cs-tech-group {
  padding: var(--sp-5);
  border-radius: var(--r);
  background: var(--dark-surface);
  border: 1px solid var(--dark-line);
}

.cs-tech-group h4 {
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--on-dark-muted);
  margin-bottom: var(--sp-4);
}

.cs-tech-group .chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.cs-tech-group .chips span {
  font-size: var(--fs-xs);
  font-family: var(--font-mono);
  padding: 0.35rem 0.7rem;
  border-radius: var(--r-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--dark-line);
  color: var(--on-dark);
}

/* ============================ DETAIL: IMPLEMENTATION TIMELINE ============================ */
.cs-timeline {
  display: grid;
  gap: var(--sp-5);
  position: relative;
  padding-left: clamp(28px, 4vw, 48px);
}

.cs-timeline::before {
  content: "";
  position: absolute;
  left: clamp(8px, 1.2vw, 14px);
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--line));
}

.cs-phase {
  position: relative;
}

.cs-phase::before {
  content: "";
  position: absolute;
  left: calc(-1 * clamp(28px, 4vw, 48px) + clamp(4px, 1.2vw, 10px));
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px var(--accent-soft);
}

.cs-phase .step-k {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  color: var(--accent-ink);
  letter-spacing: 0.04em;
}

.cs-phase h4 {
  margin: 2px 0 var(--sp-2);
}

.cs-phase p {
  font-size: var(--fs-sm);
  max-width: 640px;
}

/* ============================ DETAIL: IMPACT + METRICS ============================ */
.cs-impact {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}

.cs-impact-body p + p {
  margin-top: var(--sp-4);
}

.cs-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
}

.cs-metric {
  padding: var(--sp-5);
  border-radius: var(--r);
  background: var(--dark-surface);
  border: 1px solid var(--dark-line);
  text-align: center;
}

.cs-metric b {
  display: block;
  font-size: clamp(1.8rem, 1.3rem + 1.8vw, 2.6rem);
  font-weight: var(--fw-black);
  letter-spacing: -0.03em;
  color: #fff;
  background: var(--grad-text);
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.cs-metric span {
  font-size: var(--fs-sm);
  color: var(--on-dark-muted);
}

@media (max-width: 820px) {
  .cs-impact {
    grid-template-columns: 1fr;
  }
}

/* ============================ DETAIL: VISUALS ============================ */
.cs-visuals {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--sp-4);
  align-items: center;
}

.cs-visuals .phone-wrap {
  display: flex;
  justify-content: center;
}

.cs-figcap {
  margin-top: var(--sp-3);
  font-size: var(--fs-xs);
  color: var(--muted);
}

@media (max-width: 820px) {
  .cs-visuals {
    grid-template-columns: 1fr;
  }

  .cs-visuals .phone-wrap {
    display: none;
  }
}

/* ============================ DETAIL: QUOTE ============================ */
.cs-quote {
  max-width: 780px;
  margin-inline: auto;
  text-align: center;
}

.cs-quote svg {
  width: 38px;
  height: 38px;
  color: var(--accent);
  opacity: 0.45;
  margin: 0 auto var(--sp-4);
}

.cs-quote p {
  font-size: clamp(1.2rem, 1rem + 0.9vw, 1.6rem);
  font-weight: var(--fw-semibold);
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.cs-quote .who {
  margin-top: var(--sp-5);
  font-size: var(--fs-sm);
  color: var(--muted);
}

.cs-quote .who b {
  color: var(--ink);
}

/* ---- next-case nav ---- */
.cs-next {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-6);
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--line);
}

.cs-next span {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.cs-next b {
  display: block;
  font-size: var(--fs-h4);
  color: var(--ink);
  margin-top: 2px;
}