/* ==========================================================================
   Tralon Digital Agency — work page (work.php)
   Depends on assets/css/style.css (tokens, keyframes, .band--*, .cta, .page-hero, .card).
   1. Filters             3. Case study detail
   2. Project grid + cards
   ========================================================================== */


/* 1. Filters
   Real links: they filter server-side with JS off and are upgraded by
   portfolio.js. The active one carries aria-current="true".
   ========================================================================== */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.filter {
  min-height: 2.75rem;
  padding: 0.5rem 1.15rem;
  font-size: var(--fs-sm);
}

a.filter:hover {
  color: var(--text);
  border-color: var(--border-strong);
}

.filter[aria-current="true"] {
  color: var(--accent-3);
  border-color: var(--border-hover);
  background: rgb(254 123 1 / 0.08);
}

.filter__count {
  font-size: var(--fs-xs);
  font-variant-numeric: tabular-nums;
  opacity: 0.7;
}

.work-status {
  margin-top: var(--sp-4);
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

.work-section {
  padding-bottom: var(--sp-5);
}


/* 2. Project grid and cards
   The overlay appears on hover and keyboard focus. On touch screens there is
   no hover, so it stays on as a compact caption showing the key result.
   ========================================================================== */
.work-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 21rem), 1fr));
}

.work-card {
  --card-pad: 0;
  display: flex;
  flex-direction: column;
}

/* Cards that re-enter after a filter change. "backwards" so that the hover lift is not overridden afterwards. */
.work-card.is-entering {
  animation: scale-in 0.5s var(--ease-out) var(--enter-delay, 0ms) backwards;
}

/* Art area: an image, or a generated category illustration */
.work-art {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  border-radius: calc(var(--r-lg) - 1px) calc(var(--r-lg) - 1px) 0 0;
  background: linear-gradient(165deg, var(--primary-dark), #0F0420);
  background:
    radial-gradient(120% 90% at 25% 15%, color-mix(in srgb, var(--band) 38%, transparent), transparent 60%),
    linear-gradient(rgb(255 255 255 / 0.045) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(90deg, rgb(255 255 255 / 0.045) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(165deg, var(--primary-dark), #0F0420);
}

.work-glyph {
  position: absolute;
  inset: 0;
  width: 52%;
  height: auto;
  max-height: 70%;
  margin: auto;
  color: var(--band);
  transition: transform var(--dur-3) var(--ease-out);
}

.work-card:hover .work-glyph,
.work-card:focus-within .work-glyph {
  transform: scale(1.06);
}

.work-art__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.work-card__tags {
  position: absolute;
  top: 0.85rem;
  right: 0.85rem;
  left: 0.85rem;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  pointer-events: none;
}

.work-card__tags .chip {
  background: rgb(20 8 45 / 0.6);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: var(--text);
}

.work-card__tags .chip:first-child {
  border-color: var(--border-strong);
  border-color: color-mix(in srgb, var(--band) 60%, transparent);
}

/* Hover preview overlay */
.work-card__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 0.5rem;
  padding: 3.25rem 1.15rem 1.05rem;
  background: linear-gradient(180deg, rgb(20 8 45 / 0.35) 0%, rgb(11 4 32 / 0.94) 70%);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity var(--dur-2) var(--ease-out);
}

.work-card__overlay > * {
  transform: translateY(0.6rem);
  transition: transform var(--dur-3) var(--ease-out);
}

.work-card__overlay > :nth-child(2) { transition-delay: 0.04s; }
.work-card__overlay > :nth-child(3) { transition-delay: 0.08s; }
.work-card__overlay > :nth-child(4) { transition-delay: 0.12s; }

.work-card:hover .work-card__overlay,
.work-card:focus-within .work-card__overlay {
  opacity: 1;
}

.work-card:hover .work-card__overlay > *,
.work-card:focus-within .work-card__overlay > * {
  transform: none;
}

.work-card__label {
  font-size: var(--fs-xs);
  line-height: 1.3;
  color: var(--text-muted);
}

.work-card__result {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.015em;
}

.work-card__stack {
  display: flex;
  gap: 0.35rem;
  overflow: hidden;
}

.work-card__stack li {
  flex: none;
  padding: 0.15rem 0.6rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--text-muted);
}

.work-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.15rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--accent);
}

/* Card text */
.work-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0.45rem;
  padding: 1.25rem 1.4rem 1.5rem;
}

.work-card__meta {
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.work-card__title {
  font-size: 1.25rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

/* The title link stretches over the whole card so the entire card is clickable */
.work-card__link::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  border-radius: var(--r-lg);
}

.work-card__link:focus-visible {
  outline: none;
}

.work-card__link:focus-visible::after {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.work-card__summary {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

@media (hover: none) {
  .work-glyph { inset: 0 0 26% 0; }

  .work-card__overlay {
    padding-top: 1.5rem;
    background: linear-gradient(180deg, transparent 0%, rgb(11 4 32 / 0.92) 65%);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    opacity: 1;
  }

  .work-card__overlay > * { transform: none; }
  .work-card__stack,
  .work-card__cta { display: none; }
}


/* 3. Case study detail
   ========================================================================== */
.case-head {
  padding-block: clamp(2.5rem, 2rem + 3vw, 4.5rem) var(--sp-7);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--sp-5);
  font-size: var(--fs-sm);
  color: var(--text-muted);
  transition: color var(--dur-1) var(--ease-out);
}

.back-link::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-bottom: 2px solid currentColor;
  border-left: 2px solid currentColor;
  transform: rotate(45deg);
}

.back-link:hover {
  color: var(--accent);
}

.case__title {
  max-width: 22ch;
  letter-spacing: -0.035em;
  text-shadow: 0 2px 24px rgb(29 10 54 / 0.08);
}

.case__chips {
  margin-top: var(--sp-4);
}

.case__lead {
  max-width: 58ch;
  margin-top: var(--sp-4);
}

.work-art--wide {
  aspect-ratio: 21 / 9;
  margin-top: var(--sp-6);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
}

.work-art--wide .work-glyph {
  width: 30%;
  max-height: 72%;
}

.case__grid {
  display: grid;
  gap: var(--sp-6);
  align-items: start;
}

@media (min-width: 60rem) {
  .case__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 21rem);
    gap: var(--sp-8);
  }

  .case__aside {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }
}

.case__main > section + section {
  margin-top: var(--sp-7);
}

.case__main h2 {
  font-size: var(--fs-lg);
}

.case__main p {
  margin-top: var(--sp-3);
}

.case__list {
  display: grid;
  gap: 0.75rem;
  margin-top: var(--sp-4);
}

.case__list li {
  position: relative;
  max-width: 60ch;
  padding-left: 1.4rem;
  color: var(--text-muted);
}

.case__list li::before {
  content: "";
  position: absolute;
  top: 0.6em;
  left: 0;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 2px;
  background: var(--band);
  transform: rotate(45deg);
}

.case__aside {
  --card-pad: 1.5rem;
  border-top: 2px solid var(--band);
}

.case-fact + .case-fact {
  margin-top: 1.4rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border);
}

.case-fact__label {
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.case-fact__value {
  margin-top: 0.35rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.case-fact__stack {
  margin-top: 0.6rem;
  --cluster-gap: 0.4rem;
}

.case-fact__link {
  display: inline-block;
  margin-top: 0.35rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.work-related__title {
  margin-bottom: var(--sp-5);
  font-size: var(--fs-lg);
}