/* ============================================
   PROJECTS PAGE
   ============================================ */

.pj-main {
  padding-top: 100px;
}

/* ---------- HERO ---------- */
.pj-hero {
  padding: 60px 40px 80px;
}
.pj-hero-title {
  font-family: 'Switzer', sans-serif;
  font-weight: 600;
  font-size: clamp(32px, 6.5vw, 110px);
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: var(--black);
  text-transform: uppercase;
}
.pj-line {
  display: block;
  overflow: hidden;
}
.pj-word {
  display: inline-block;
  transform: translateY(110%);
  opacity: 0;
  animation: pjWordUp 0.7s var(--transition) forwards;
}
.pj-line:nth-child(1) .pj-word { animation-delay: 0.2s; }
.pj-line:nth-child(2) .pj-word { animation-delay: 0.32s; }
@keyframes pjWordUp {
  to { transform: translateY(0); opacity: 1; }
}

.pj-hero-sub {
  font-family: 'Pretendard Variable', Pretendard, sans-serif;
  font-size: clamp(13px, 1.3vw, 17px);
  font-weight: 400;
  line-height: 1.8;
  opacity: 0.6;
  margin-top: 24px;
}

/* ---------- FILTER ---------- */
.pj-filter-wrap {
  border-top: 1px solid var(--black);
  border-bottom: 1px solid var(--black);
  padding: 0 40px;
  display: flex;
  align-items: stretch;
  gap: 0;
}
.pj-filter {
  display: flex;
  flex: 1;
  gap: 0;
  overflow-x: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.pj-filter::-webkit-scrollbar { display: none; }

/* view toggle */
.pj-view-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
  border-left: 1px solid rgba(0,0,0,0.15);
  padding-left: 20px;
  flex-shrink: 0;
}
.pj-view-btn {
  appearance: none;
  background: transparent;
  border: none;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
  opacity: 0.3;
  transition: opacity 0.25s ease, background 0.25s ease;
  cursor: pointer;
}
.pj-view-btn svg { width: 18px; height: 18px; }
.pj-view-btn:hover { opacity: 0.6; }
.pj-view-btn.active { opacity: 1; background: rgba(0,0,0,0.06); }

.pj-filter-btn {
  appearance: none;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--black);
  padding: 18px 20px;
  font-family: 'Switzer', sans-serif;
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.18em;
  cursor: pointer;
  opacity: 0.4;
  transition: opacity 0.3s ease, border-bottom-color 0.3s ease;
  white-space: nowrap;
  flex-shrink: 0;
}
.pj-filter-btn:first-child { padding-left: 0; }
.pj-filter-btn:hover { opacity: 0.75; }
.pj-filter-btn.active {
  opacity: 1;
  border-bottom-color: var(--black);
}

/* ---------- PROJECT LIST ---------- */
.pj-list {
  border-top: 1px solid var(--black);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
}
.pj-item:nth-child(odd) {
  border-right: 1px solid var(--black);
}
.pj-row {
  grid-column: 1 / -1;
}

.pj-item {
  display: block;
  text-decoration: none;
  color: var(--black);
  border-bottom: 1px solid var(--black);
  overflow: hidden;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--transition), transform 0.7s var(--transition);
}
.pj-item.in-view {
  opacity: 1;
  transform: translateY(0);
}

.pj-item-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--black);
}
.pj-item-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.8s var(--transition);
}
.pj-item:hover .pj-item-img img {
  transform: scale(1.03);
}
.pj-item-img-placeholder {
  width: 100%;
  height: 100%;
  background: #111;
}

.pj-item-info {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 22px 40px 30px;
  gap: 20px;
}
.pj-item-name {
  font-family: 'Switzer', sans-serif;
  font-weight: 600;
  font-size: clamp(16px, 2vw, 24px);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 6px;
  text-transform: uppercase;
}
.pj-item-desc {
  font-size: 13px;
  opacity: 0.6;
  letter-spacing: 0.01em;
  font-family: 'Pretendard Variable', Pretendard, sans-serif;
}
.pj-item-cat {
  font-family: 'Switzer', sans-serif;
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  white-space: nowrap;
  padding-top: 4px;
  flex-shrink: 0;
}

.pj-empty {
  padding: 80px 40px;
  font-size: 12px;
  letter-spacing: 0.25em;
  font-weight: 600;
  opacity: 0.4;
}

/* ---------- LIST VIEW ---------- */
.pj-row {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0 40px;
  min-height: 76px;
  border-bottom: 1px solid var(--black);
  text-decoration: none;
  color: var(--black);
  position: relative;
  isolation: isolate;
  overflow: hidden;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--transition), transform 0.6s var(--transition), color 0.4s var(--transition);
}
.pj-row.in-view { opacity: 1; transform: translateY(0); }
.pj-row::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--black);
  clip-path: inset(0 0 100% 0);
  z-index: -1;
}
.pj-row:hover::before {
  clip-path: inset(0 0 0% 0);
  transition: clip-path 0.5s var(--transition);
}
.pj-row:hover { color: var(--white); }

.pj-row-num {
  font-family: 'Switzer', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  opacity: 0.35;
  width: 48px;
  flex-shrink: 0;
}
.pj-row-name {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 32px 0 0;
}
.pj-row-en {
  font-family: 'Switzer', sans-serif;
  font-weight: 600;
  font-size: clamp(14px, 1.6vw, 20px);
  letter-spacing: -0.02em;
  text-transform: uppercase;
  line-height: 1.1;
}
.pj-row-ko {
  font-family: 'Pretendard Variable', Pretendard, sans-serif;
  font-size: 12px;
  font-weight: 400;
  opacity: 0.5;
  letter-spacing: 0;
}
.pj-row-cat {
  font-family: 'Switzer', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.5;
  width: 130px;
  flex-shrink: 0;
}
.pj-row-loc {
  font-family: 'Switzer', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  opacity: 0.45;
  width: 90px;
  flex-shrink: 0;
  text-align: right;
}
.pj-row-year {
  font-family: 'Switzer', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  opacity: 0.45;
  width: 54px;
  flex-shrink: 0;
  text-align: right;
}
.pj-row:hover .pj-row-num,
.pj-row:hover .pj-row-ko,
.pj-row:hover .pj-row-cat,
.pj-row:hover .pj-row-loc,
.pj-row:hover .pj-row-year { opacity: 0.65; }

@media (max-width: 768px) {
  .pj-list { grid-template-columns: 1fr; }
  .pj-item:nth-child(odd) { border-right: none; }
  .pj-main { padding-top: 65px; }
  .pj-hero { padding: 24px 20px 50px; }
  .pj-item-name { font-size: 15px; }
  .pj-item-desc { font-size: 11px; }
  .pj-filter-wrap { padding: 0 20px; }
  .pj-filter-btn { padding: 16px 14px; font-size: 10px; letter-spacing: 0.05em; }
  .pj-item-info { padding: 8px 20px 12px; flex-direction: column; gap: 4px; }
  .pj-row { padding: 0 20px; min-height: 68px; }
  .pj-row-cat, .pj-row-loc, .pj-row-year { display: none; }
  .pj-item-cat { display: none; }
  .pj-view-toggle { display: none; }
  .pj-view-toggle { padding-left: 12px; }
}