/* ═══════════════════════════════════════════════════════════════
   work-page.css  — Premium interactive portfolio page
   Version: 1.3.0.0
   ═══════════════════════════════════════════════════════════════ */

/* ─── Screen-reader only utility ─────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   HERO
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.wk-hero {
  padding-top: clamp(7rem, 12vw, 9rem);
  padding-bottom: var(--sp-20);
  background: linear-gradient(170deg, #F0F4FF 0%, #FFFFFF 60%);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  overflow: hidden;
  position: relative;
}

.wk-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(99, 102, 241, 0.07) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(59, 130, 246, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.wk-hero__inner {
  position: relative;
  max-width: 760px;
}

.wk-hero__kicker {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-accent-primary);
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.18);
  padding: 5px 14px;
  border-radius: var(--r-full);
  margin-bottom: var(--sp-6);
}

.wk-hero__title {
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: var(--fw-bold);
  line-height: 1.08;
  color: var(--clr-gray-900);
  letter-spacing: -0.03em;
  margin-bottom: var(--sp-6);
}

.wk-hero__sub {
  font-size: var(--fs-xl);
  color: var(--clr-gray-600);
  line-height: 1.6;
  max-width: 600px;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   STATS BAR
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.wk-stats {
  background: #0F172A;
  padding-block: var(--sp-10);
}

.wk-stats__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: var(--sp-6);
  text-align: center;
}

.wk-stat__num {
  display: block;
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  color: #818CF8;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.wk-stat__lbl {
  display: block;
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: rgba(255, 255, 255, 0.55);
  margin-top: var(--sp-2);
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   SECTION LABELS
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.wk-label {
  display: block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-accent-primary);
  margin-bottom: var(--sp-2);
}

.wk-section-title {
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  color: var(--clr-gray-900);
  letter-spacing: -0.02em;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   METRICS TABLE
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.wk-proof {
  padding-block: var(--sp-16);
  background: #ffffff;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.wk-proof__hd { margin-bottom: var(--sp-8); }

.wk-proof__scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 16px;
  border: 1px solid rgba(226, 232, 240, 0.9);
  background: #fff;
  box-shadow: 0 4px 24px rgba(0,0,0,0.04);
}

.wk-proof__table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: var(--fs-sm);
}

.wk-proof__table th,
.wk-proof__table td {
  padding: var(--sp-4) var(--sp-5);
  text-align: left;
  border-bottom: 1px solid #F1F5F9;
}

.wk-proof__table tbody tr:last-child td { border-bottom: none; }

.wk-proof__table th {
  background: #F8FAFC;
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--clr-gray-500);
  font-weight: var(--fw-semibold);
}

.wk-proof__table tbody tr {
  transition: background 0.15s ease;
}
.wk-proof__table tbody tr:hover { background: #F8FAFC; }

.wk-proof__link {
  color: var(--clr-gray-900);
  font-weight: var(--fw-medium);
  text-decoration: none;
}
.wk-proof__link:hover { color: var(--clr-accent-primary); }

.wk-proof__metric {
  font-weight: var(--fw-bold);
  color: var(--clr-accent-primary);
}

.wk-proof__cta {
  color: var(--clr-accent-primary);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-xs);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.15s;
}
.wk-proof__cta:hover { color: var(--clr-gray-900); }

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   PORTFOLIO SECTION
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.wk-portfolio-section {
  background: #F8FAFC;
  padding-bottom: calc(var(--sp-24) + 5rem);
}

/* ─── Search ──────────────────────────────────────────────────── */
.wk-search-wrap {
  position: relative;
  max-width: 600px;
  margin: 0 auto var(--sp-8);
}

.wk-search__icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--clr-gray-400);
  pointer-events: none;
  display: flex;
  align-items: center;
}

.wk-search {
  width: 100%;
  padding: 14px 48px 14px 50px;
  border-radius: var(--r-full);
  border: 1.5px solid rgba(226, 232, 240, 0.9);
  background: #ffffff;
  font-size: var(--fs-base);
  color: var(--clr-gray-900);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  -webkit-appearance: none;
}

.wk-search::placeholder { color: var(--clr-gray-400); }

.wk-search:focus {
  border-color: var(--clr-accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12), 0 2px 8px rgba(0,0,0,0.04);
}

.wk-search__clear {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--clr-gray-400);
  display: flex;
  align-items: center;
  padding: 4px;
  border-radius: 50%;
  transition: color 0.15s, background 0.15s;
}
.wk-search__clear:hover { color: var(--clr-gray-700); background: #F1F5F9; }

/* ─── Controls row ────────────────────────────────────────────── */
.wk-controls {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}

/* ─── Filter groups ───────────────────────────────────────────── */
.wk-filter-group {
  background: #fff;
  border: 1.5px solid rgba(226, 232, 240, 0.9);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,0.03);
}

.wk-accordion-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: none;
  border: none;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-gray-700);
  cursor: pointer;
  transition: color 0.15s;
  text-align: left;
}
.wk-accordion-toggle:hover { color: var(--clr-gray-900); }

.wk-accordion-icon {
  transition: transform 0.25s ease;
  flex-shrink: 0;
}
.wk-accordion-toggle[aria-expanded="true"] .wk-accordion-icon {
  transform: rotate(180deg);
}

.wk-filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 16px 16px;
  transition: all 0.25s ease;
}

.wk-filter-pills--collapsed {
  display: none;
}

/* ─── Pills ───────────────────────────────────────────────────── */
.wk-pill {
  padding: 7px 16px;
  border-radius: var(--r-full);
  border: 1.5px solid rgba(226, 232, 240, 0.9);
  background: #F8FAFC;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-gray-600);
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
  line-height: 1;
}

.wk-pill:hover {
  border-color: rgba(99, 102, 241, 0.4);
  color: var(--clr-gray-900);
  background: #fff;
}

.wk-pill.active {
  background: var(--clr-accent-primary);
  border-color: var(--clr-accent-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
}

.wk-pill--tech.active:not([data-tech="all"]) {
  background: #0F172A;
  border-color: #0F172A;
}

/* ─── Sort ────────────────────────────────────────────────────── */
.wk-sort-wrap {
  position: relative;
  width: fit-content;
}

.wk-sort {
  appearance: none;
  -webkit-appearance: none;
  padding: 10px 40px 10px 16px;
  border: 1.5px solid rgba(226, 232, 240, 0.9);
  border-radius: var(--r-full);
  background: #fff;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-gray-700);
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s;
  box-shadow: 0 1px 4px rgba(0,0,0,0.03);
}

.wk-sort:focus {
  border-color: var(--clr-accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

.wk-sort__chevron {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--clr-gray-400);
  pointer-events: none;
}

/* ─── Active filter bar ───────────────────────────────────────── */
.wk-active {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-5);
  background: rgba(99, 102, 241, 0.05);
  border: 1px solid rgba(99, 102, 241, 0.12);
  border-radius: 12px;
  margin-bottom: var(--sp-8);
  font-size: var(--fs-sm);
}

.wk-active__count {
  font-weight: var(--fw-semibold);
  color: var(--clr-gray-700);
  white-space: nowrap;
}

.wk-active__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  flex: 1;
}

.wk-active__tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--r-full);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  color: var(--clr-accent-primary);
  cursor: pointer;
  transition: background 0.15s;
}
.wk-active__tag:hover { background: rgba(99, 102, 241, 0.18); }

.wk-active__clear {
  margin-left: auto;
  background: none;
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: var(--r-full);
  padding: 4px 14px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--clr-accent-primary);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s;
}
.wk-active__clear:hover { background: var(--clr-accent-primary); color: #fff; }

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   PORTFOLIO GRID
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.wk-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--sp-8);
  align-items: start;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   CARD
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.wk-card {
  background: #ffffff;
  border: 1.5px solid rgba(226, 232, 240, 0.8);
  border-radius: 20px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.28s ease,
              border-color 0.28s ease;
  position: relative;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.wk-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px -8px rgba(0,0,0,0.12), 0 4px 8px rgba(0,0,0,0.04);
  border-color: rgba(99, 102, 241, 0.3);
}

/* ─── Thumbnail ───────────────────────────────────────────────── */
.wk-card__thumb {
  display: block;
  position: relative;
  overflow: hidden;
  height: 210px;
  text-decoration: none;
}

.wk-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.45s ease;
}

.wk-card:hover .wk-card__img {
  transform: scale(1.04);
}

.wk-card__thumb-grad {
  width: 100%;
  height: 100%;
}

.wk-card__cat-badge {
  position: absolute;
  bottom: 12px;
  left: 14px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--r-full);
  font-size: 11px;
  font-weight: var(--fw-bold);
  color: var(--clr-gray-800);
  padding: 4px 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ─── Body ────────────────────────────────────────────────────── */
.wk-card__body {
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.wk-card__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-3);
  font-size: var(--fs-xs);
}

.wk-card__industry {
  color: var(--clr-accent-primary);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.wk-card__reading {
  color: var(--clr-gray-400);
}

.wk-card__reading::before { content: '·'; margin-right: 8px; }

.wk-card__title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--clr-gray-900);
  line-height: 1.3;
  letter-spacing: -0.015em;
  margin-bottom: var(--sp-3);
}

.wk-card__title-link {
  color: inherit;
  text-decoration: none;
  transition: color 0.18s;
}
.wk-card__title-link:hover { color: var(--clr-accent-primary); }

.wk-card__desc {
  font-size: var(--fs-sm);
  color: var(--clr-gray-600);
  line-height: 1.65;
  margin-bottom: var(--sp-4);
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ─── Tags ────────────────────────────────────────────────────── */
.wk-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: var(--sp-4);
}

.wk-card__tag {
  font-size: 10px;
  letter-spacing: 0.04em;
  font-weight: var(--fw-bold);
  background: #F1F5F9;
  border: 1px solid #E2E8F0;
  color: var(--clr-gray-600);
  padding: 3px 9px;
  border-radius: 6px;
}

/* ─── Impact metrics toggle ───────────────────────────────────── */
.wk-card__impact-wrap {
  margin-bottom: var(--sp-4);
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: 12px;
  overflow: hidden;
}

.wk-card__impact-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 14px;
  background: #F8FAFC;
  border: none;
  cursor: pointer;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--clr-gray-700);
  text-align: left;
  transition: background 0.15s, color 0.15s;
}

.wk-card__impact-toggle:hover,
.wk-card__impact-toggle.is-open {
  background: rgba(99, 102, 241, 0.06);
  color: var(--clr-accent-primary);
}

.wk-card__impact-chevron {
  margin-left: auto;
  transition: transform 0.22s ease;
  flex-shrink: 0;
}
.wk-card__impact-toggle.is-open .wk-card__impact-chevron { transform: rotate(180deg); }

.wk-card__impact-panel {
  padding: 12px 14px 14px;
  background: #fff;
  animation: wk-panel-open 0.22s ease forwards;
}

@keyframes wk-panel-open {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.wk-card__impact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.wk-card__impact-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: var(--fs-xs);
  color: var(--clr-gray-700);
  line-height: 1.5;
}

.wk-card__impact-item svg {
  flex-shrink: 0;
  color: #10B981;
  margin-top: 2px;
}

.wk-card__impact-client {
  margin-top: 10px;
  font-size: var(--fs-xs);
  color: var(--clr-gray-400);
  border-top: 1px solid #F1F5F9;
  padding-top: 8px;
}

/* ─── Card footer ─────────────────────────────────────────────── */
.wk-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--sp-4);
  border-top: 1px solid #F1F5F9;
  margin-top: auto;
}

.wk-card__duration {
  font-size: var(--fs-xs);
  color: var(--clr-gray-400);
  font-weight: var(--fw-medium);
}

.wk-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-accent-primary);
  text-decoration: none;
  transition: gap 0.2s ease, color 0.18s;
}
.wk-card:hover .wk-card__cta,
.wk-card__cta:hover { gap: 9px; color: var(--clr-gray-900); }

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   EMPTY / NO RESULTS
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.wk-empty,
.wk-no-results {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-20) var(--sp-8);
  background: #fff;
  border: 1.5px dashed rgba(99, 102, 241, 0.2);
  border-radius: 20px;
  text-align: center;
  color: var(--clr-gray-400);
}

.wk-no-results {
  max-width: 480px;
  margin: 0 auto;
}

.wk-no-results__title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--clr-gray-700);
  margin: 0;
}

.wk-no-results__sub {
  font-size: var(--fs-sm);
  color: var(--clr-gray-400);
  margin: 0;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   RESPONSIVE
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

/* ── Tablet & up: accordion toggles become labels only ─────────  */
@media (min-width: 768px) {
  .wk-controls {
    flex-direction: row;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--sp-4);
  }

  .wk-filter-group {
    flex: 1;
    min-width: 0;
  }

  .wk-accordion-toggle {
    cursor: default;
    pointer-events: none;
  }

  .wk-filter-pills--collapsed {
    display: flex; /* always visible on tablet+ */
  }

  .wk-accordion-icon {
    display: none;
  }

  .wk-sort-wrap {
    flex-shrink: 0;
    align-self: center;
  }
}

/* ── Large desktop ─────────────────────────────────────────────── */
@media (min-width: 1200px) {
  .wk-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ── Mobile tweaks ─────────────────────────────────────────────── */
@media (max-width: 767px) {
  .wk-hero {
    padding-top: var(--sp-24);
    padding-bottom: var(--sp-12);
  }

  .wk-hero__title {
    font-size: 2.4rem;
  }

  .wk-hero__sub {
    font-size: var(--fs-base);
  }

  .wk-grid {
    grid-template-columns: 1fr;
  }

  .wk-active {
    flex-direction: column;
    align-items: flex-start;
  }

  .wk-active__clear {
    margin-left: 0;
  }

  .wk-sort-wrap {
    width: 100%;
  }

  .wk-sort {
    width: 100%;
  }
}