/* =========================================================================
   STUDIO NINE — WORK INDEX
   ========================================================================= */

.s9-work-hero {
  padding-top: calc(var(--s9-header-h) + clamp(4rem, 8vw, 7rem));
  padding-bottom: clamp(2rem, 4vw, 4rem);
}
.s9-work-hero__title {
  font-family: var(--s9-font-display);
  font-weight: 700;
  font-size: clamp(3rem, 9vw, 8.5rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  padding-block: 0.08em;
}
.s9-work-hero__sub {
  display: flex; gap: var(--s9-gutter);
  align-items: end;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: var(--s9-space-5);
  border-top: 1px solid var(--s9-line);
}
.s9-work-hero__lead {
  font-size: var(--s9-size-xl);
  line-height: 1.4;
  color: var(--s9-fg-mute);
  max-width: 50ch;
}

/* Filters */
.s9-filters {
  display: flex;
  gap: var(--s9-space-2);
  flex-wrap: wrap;
  padding-block: var(--s9-space-5);
  border-bottom: 1px solid var(--s9-line);
  margin-bottom: clamp(2rem, 4vw, 4rem);
}
.s9-filter {
  padding: 0.5rem 1rem;
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--s9-line);
  border-radius: var(--s9-r-pill);
  color: var(--s9-fg-mute);
  cursor: pointer;
  transition: all var(--s9-d-fast) var(--s9-ease);
  background: transparent;
}
.s9-filter:hover { border-color: var(--s9-fg-mute); color: var(--s9-fg); }
.s9-filter.is-active {
  background: var(--s9-accent);
  color: var(--s9-accent-ink);
  border-color: var(--s9-accent-text);
}

/* Work grid */
.s9-work-grid {
  display: flex; flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--s9-line);
}
.s9-work-row {
  display: grid;
  grid-template-columns: 80px 1fr 200px 220px 80px;
  gap: var(--s9-gutter);
  align-items: center;
  padding-block: clamp(1.25rem, 2vw, 2rem);
  border-bottom: 1px solid var(--s9-line);
  transition: padding var(--s9-d-base) var(--s9-ease);
  position: relative;
  cursor: pointer;
  text-decoration: none;
  color: var(--s9-fg);
}
.s9-work-row:hover { padding-left: var(--s9-space-4); }
.s9-work-row:hover .s9-work-row__title { color: var(--s9-accent-text); }
.s9-work-row:hover .s9-work-row__arrow { transform: translateX(0); opacity: 1; }
.s9-work-row:hover .s9-work-row__preview { opacity: 1; visibility: visible; transform: translate(-50%, -50%) scale(1); }

.s9-work-row__num {
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-sm);
  color: var(--s9-mute);
  letter-spacing: 0.05em;
}
.s9-work-row__title {
  font-family: var(--s9-font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 2.6vw, 2.25rem);
  letter-spacing: -0.025em;
  line-height: 1.05;
  transition: color var(--s9-d-base) var(--s9-ease);
  padding-block: 0.04em;
}
.s9-work-row__industry {
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--s9-mute);
}
.s9-work-row__tags {
  display: flex; flex-wrap: wrap;
  gap: var(--s9-space-2);
}
.s9-work-row__arrow {
  font-size: var(--s9-size-2xl);
  color: var(--s9-accent-text);
  transform: translateX(-12px);
  opacity: 0;
  transition: transform var(--s9-d-base) var(--s9-ease), opacity var(--s9-d-base) var(--s9-ease);
  text-align: right;
}
@media (max-width: 900px) {
  .s9-work-row {
    grid-template-columns: 60px 1fr;
    grid-template-rows: auto auto auto;
    gap: var(--s9-space-2) var(--s9-space-4);
  }
  .s9-work-row__industry,
  .s9-work-row__tags { grid-column: 2 / 3; }
  .s9-work-row__arrow { display: none; }
}

/* Floating preview image (desktop only) */
.s9-work-row__preview {
  position: fixed;
  top: 50%; left: 50%;
  width: 480px;
  aspect-ratio: 4 / 3;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -50%) scale(0.95);
  transition: opacity var(--s9-d-base) var(--s9-ease), transform var(--s9-d-base) var(--s9-ease), visibility var(--s9-d-base) var(--s9-ease);
  border-radius: var(--s9-r-md);
  overflow: hidden;
  z-index: 5;
  box-shadow: 0 30px 100px rgba(0,0,0,0.6);
}
@media (max-width: 900px) {
  .s9-work-row__preview { display: none; }
}

/* Hidden state for filters */
.s9-work-row.is-hidden { display: none; }