/* ==========================================================================
   Works (施工実績) page styles
   ========================================================================== */

.works-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 48px;
}

.filter-btn {
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-line);
  background: var(--color-white);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-soft);
  transition: background 0.25s var(--ease-soft), color 0.25s var(--ease-soft), border-color 0.25s var(--ease-soft);
}

.filter-btn:hover {
  border-color: var(--color-accent-strong);
}

.filter-btn.is-active {
  background: var(--color-accent-strong);
  border-color: var(--color-accent-strong);
  color: var(--color-text);
}

.works-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.works-item {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.works-item.is-hidden {
  display: none;
}

.works-item-trigger {
  display: block;
  width: 100%;
  padding: 0;
  border: none;
  background: none;
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.works-item-trigger img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease-soft);
}

.works-item-trigger:hover img {
  transform: scale(1.06);
}

.works-item-zoom {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(58, 55, 44, 0.28);
  opacity: 0;
  transition: opacity 0.3s ease;
  color: var(--color-white);
}

.works-item-zoom svg {
  width: 30px;
  height: 30px;
}

.works-item-trigger:hover .works-item-zoom {
  opacity: 1;
}

.works-item figcaption {
  padding: 20px 22px 26px;
}

.works-item h3 {
  margin-top: 10px;
  font-size: 16px;
}

.works-item p {
  margin-top: 8px;
  font-size: 13px;
  color: var(--color-text-soft);
}

.works-note {
  margin-top: 48px;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-faint);
}

@media (max-width: 900px) {
  .works-gallery {
    grid-template-columns: 1fr;
  }
}

/* ---------- lightbox ---------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  background: rgba(30, 28, 20, 0.82);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.lightbox figure {
  margin: 0;
  max-width: 900px;
  width: 100%;
}

.lightbox img {
  width: 100%;
  max-height: 74vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: #111;
}

.lightbox figcaption {
  margin-top: 16px;
  text-align: center;
  color: var(--color-white);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.lightbox-close {
  position: absolute;
  top: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-close svg {
  width: 20px;
  height: 20px;
}