/* -- CATEGORY SECTION ------------------------------ */
.section-category {
  padding: 80px 52px;
  border-bottom: 1px solid var(--line);
}

.section-category:nth-child(even) {
  background: var(--paper);
}

.section-category:nth-child(odd) {
  background: var(--warm-white);
}

.category-header {
  margin-bottom: 56px;
  display: flex;
  align-items: baseline;
  gap: 24px;
}

.category-title {
  font-family: var(--fn-serif);
  font-size: clamp(24px, 2.8vw, 36px);
  font-weight: 300;
  font-style: italic;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.category-count {
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

/* -- DRAWING GRID ---------------------------------- */
.drawing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* Medium Drawings (Category 2) - 3 columns, larger display */
.drawing-grid--medium {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

/* Bigger Drawings (Category 3) - 2 columns, massive showcase display */
.drawing-grid--large,
.drawing-grid--wide {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px;
}

.drawing-card {
  background: var(--warm-white);
  overflow: hidden;
  position: relative;
  border: 1px solid var(--line);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
  display: flex;
  flex-direction: column;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), 
              box-shadow 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.section-category:nth-child(even) .drawing-card {
  background: var(--warm-white);
}

.drawing-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(26, 25, 24, 0.06);
  border-color: rgba(26, 25, 24, 0.2);
}

.drawing-img-wrap {
  overflow: hidden;
  background: #ffffff;
  aspect-ratio: 4/5;
  position: relative;
  border-bottom: 1px solid var(--line);
  cursor: zoom-in;
  display: flex;
  align-items: center;
  justify-content: center;
}

.drawing-grid--medium .drawing-img-wrap {
  aspect-ratio: 4/5;
  min-height: 320px;
}

.drawing-grid--large .drawing-img-wrap,
.drawing-grid--wide .drawing-img-wrap {
  aspect-ratio: 16/11;
  min-height: 380px;
}

.drawing-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  padding: 14px;
  filter: drop-shadow(0 4px 14px rgba(26, 25, 24, 0.07));
  transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              filter 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.drawing-card:hover .drawing-img-wrap img {
  transform: scale(1.03);
  filter: drop-shadow(0 10px 24px rgba(26, 25, 24, 0.12));
}

.drawing-info {
  padding: 18px 20px 22px;
  background: var(--warm-white);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.drawing-title {
  font-family: var(--fn-serif);
  font-size: 18px;
  font-style: italic;
  font-weight: 300;
  color: var(--ink);
  margin-bottom: 6px;
  line-height: 1.3;
}

.drawing-grid--large .drawing-title,
.drawing-grid--wide .drawing-title {
  font-size: 22px;
}

.drawing-meta {
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.6;
}

/* -- DRAWING DESCRIPTION ACCORDION & BUTTON -- */
.drawing-desc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 10px;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--charcoal);
  font-family: var(--fn-sans);
  font-size: 8.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 6px 12px 5px;
  cursor: pointer;
  border-radius: 0;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  line-height: 1;
  font-weight: 500;
}

.drawing-desc-btn:hover {
  background: var(--paper);
  border-color: var(--ink);
  color: var(--ink);
}

.drawing-desc-btn:focus-visible {
  outline: 1px solid var(--ink);
  outline-offset: 2px;
}

.drawing-desc-btn .desc-btn-icon {
  width: 9px;
  height: 9px;
  display: block;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  flex-shrink: 0;
}

.drawing-desc-btn[aria-expanded="true"] {
  background: var(--paper);
  border-color: var(--ink);
  color: var(--ink);
}

.drawing-desc-btn[aria-expanded="true"] .desc-btn-icon {
  transform: rotate(180deg);
}

.drawing-desc-wrap {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  margin-top: 0;
}

.drawing-desc-wrap.is-open {
  grid-template-rows: 1fr;
  margin-top: 10px;
}

.drawing-desc-inner {
  overflow: hidden;
}

.drawing-desc {
  display: block;
  font-family: var(--fn-sans);
  font-size: 11.5px;
  line-height: 1.65;
  color: var(--charcoal);
  font-weight: 300;
  padding: 10px 12px 12px;
  background: var(--paper);
  border: 1px solid var(--line);
  letter-spacing: 0.01em;
}

/* -- LIGHTBOX INTERACTIVE WRAP --------------------- */
.drawing-img-wrap {
  cursor: zoom-in;
}

/* -- ANIMATIONS FOR FILTERING ----------------------- */
.drawing-card {
  opacity: 1;
  transform: scale(1);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.drawing-card.is-hidden {
  opacity: 0;
  transform: scale(0.96);
  pointer-events: none;
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  border: none;
  padding: 0;
  margin: 0;
}

.drawing-card.is-animating {
  pointer-events: none;
}

/* -- PORTFOLIO FILTERS UI -------------------------- */
.portfolio-filters {
  display: flex;
  justify-content: space-between;
  width: 320px;
  margin: 36px auto 0;
  flex-wrap: wrap;
  gap: 16px;
}

.filter-group {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

.filter-group label {
  font-size: 8.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

.select-wrapper {
  position: relative;
  width: 150px;
}

.select-wrapper select {
  width: 100%;
  background: var(--warm-white);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 10px 28px 8px 12px;
  font-family: var(--fn-sans);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  outline: none;
  cursor: pointer;
  appearance: none;
  border-radius: 0;
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.select-wrapper select:hover,
.select-wrapper select:focus {
  border-color: var(--ink);
  background-color: var(--paper);
}

.select-wrapper::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 50%;
  width: 6px;
  height: 6px;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  transform: translateY(-65%) rotate(45deg);
  pointer-events: none;
  opacity: 0.5;
  transition: opacity 0.3s ease;
}

.select-wrapper:hover::after {
  opacity: 1;
}

/* -- NO RESULTS STYLING ---------------------------- */
.portfolio-no-results {
  text-align: center;
  padding: 100px 24px;
  opacity: 0;
  transform: translateY(15px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.portfolio-no-results.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.no-results-title {
  font-family: var(--fn-serif);
  font-size: 24px;
  font-style: italic;
  font-weight: 300;
  color: var(--ink);
  margin-bottom: 10px;
}

.no-results-subtitle {
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: 0.05em;
}

/* -- RESPONSIVE ------------------------------------ */
/* -- RESPONSIVE ------------------------------------ */
@media (max-width: 1200px) {
  .drawing-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }
  .drawing-grid--medium {
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }
  .drawing-grid--large,
  .drawing-grid--wide {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }
}

@media (max-width: 992px) {
  .section-category {
    padding: 50px 24px 60px;
  }
  .drawing-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .drawing-grid--medium {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
  .drawing-grid--large,
  .drawing-grid--wide {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .drawing-grid--large .drawing-img-wrap,
  .drawing-grid--wide .drawing-img-wrap {
    aspect-ratio: 4/3;
    min-height: 260px;
  }
}

@media (max-width: 640px) {
  .section-category {
    padding: 36px 14px 44px;
  }
  .category-header {
    margin-bottom: 20px;
    gap: 12px;
  }
  .category-title {
    font-size: 22px;
  }
  .category-count {
    font-size: 9px;
  }
  .drawing-grid,
  .drawing-grid--medium {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .drawing-grid--large,
  .drawing-grid--wide {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .drawing-img-wrap {
    aspect-ratio: 4/5 !important;
    min-height: unset !important;
  }
  .drawing-grid--large .drawing-img-wrap,
  .drawing-grid--wide .drawing-img-wrap {
    aspect-ratio: 16/11 !important;
  }
  .drawing-img-wrap img {
    padding: 10px;
  }
  .drawing-info {
    padding: 12px 12px 14px;
  }
  .drawing-title {
    font-size: 15px;
    margin-bottom: 4px;
  }
  .drawing-meta {
    font-size: 8.5px;
    line-height: 1.4;
    letter-spacing: 0.12em;
  }
  .drawing-desc-btn {
    font-size: 7.5px;
    padding: 5px 9px 4px;
    gap: 4px;
    margin-top: 8px;
  }
  .drawing-desc-btn .desc-btn-icon {
    width: 7.5px;
    height: 7.5px;
  }
  .drawing-desc {
    font-size: 10.5px;
    line-height: 1.55;
    padding: 8px 10px;
  }
  .drawing-desc-wrap.is-open {
    margin-top: 8px;
  }
  .portfolio-filters {
    width: 100%;
    max-width: 320px;
    margin: 24px auto 0;
    gap: 12px;
    justify-content: center;
  }
  .select-wrapper {
    width: 145px;
  }
}

@keyframes lb-in {
  from { opacity: 0; transform: scale(0.96); }
  to   { opacity: 1; transform: scale(1); }
}