@charset "UTF-8";

/* ==========================================================================
   EnChord Project - Works Catalog Architecture
   (Scoped to .page-works for strict isolation and consistent Noto Sans UI)
   ========================================================================== */

/* 1. BASE SETTINGS for WORKS PAGE */
body.page-works {
  background-color: var(--c-bg-base);
  color: var(--c-black);
}

/* ==========================================================================
   2. WORKS HERO (Editorial Title)
   ========================================================================== */
.works-hero {
  padding: clamp(80px, 12vh, 140px) 0 clamp(40px, 6vh, 60px);
  background-color: var(--c-bg-base);
}

.works-hero-inner {
  max-width: var(--max-w-base);
  margin: 0 auto;
}

.page-works .eyebrow {
  font-family: var(--font-accent); /* DM Serif Display for accent */
  font-size: clamp(0.8rem, 2vw, 1rem);
  color: var(--theme-accent);
  letter-spacing: 0.15em;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  font-weight: 500;
}

.page-works .display-title {
  font-family: var(--font-display); /* Noto Sans JP Bold */
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--c-black);
  margin-bottom: 2rem;
}

.page-works .hero-subtext {
  font-size: clamp(1rem, 2vw, 1.1rem);
  line-height: 1.8;
  color: var(--c-text-muted);
  max-width: 720px; /* Roomy layout to prevent 1-character drop */
  font-weight: 500;
}

/* ==========================================================================
   3. STICKY FILTER NAVIGATION (User-First UI)
   ========================================================================== */
.works-filter-sticky {
  position: sticky;
  top: var(--header-height);
  z-index: 900;
  background-color: rgba(249, 249, 246, 0.9); /* global base color with alpha */
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(14, 14, 14, 0.05);
  margin-bottom: 60px;
}

.works-filter {
  padding: 1.5rem 0;
}

.filter-list {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 12px;
  overflow-x: auto; /* SPでの横スクロール確保 */
  white-space: nowrap;
  -ms-overflow-style: none; /* IE/Edge */
  scrollbar-width: none; /* Firefox */
}
.filter-list::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

.filter-btn {
  padding: 10px 24px;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid var(--c-border);
  background: var(--c-white);
  color: var(--c-text-muted);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.filter-btn:hover {
  border-color: var(--theme-primary);
  color: var(--theme-primary);
}

.filter-btn.active {
  background: var(--theme-primary);
  color: var(--c-white);
  border-color: var(--theme-primary);
  box-shadow: 0 4px 12px rgba(91, 124, 153, 0.2);
}

/* ==========================================================================
   4. WORKS CATALOG GRID
   ========================================================================== */
.works-catalog {
  padding-bottom: 120px;
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr); /* 2列カタログ形式 */
  gap: 60px 40px;
  transition: opacity 0.4s ease;
}

.works-item {
  display: block;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

/* フィルタリング時のアニメーションクラス */
.works-item.fade-out {
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
}

.works-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.works-thumb {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10; /* アスペクト比固定によるCLS防止 */
  background-color: #EEE;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.works-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.works-link:hover .works-thumb img {
  transform: scale(1.05);
}

.works-meta {
  margin-bottom: 12px;
}

.works-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--theme-primary);
  background-color: var(--c-blue-pale);
  padding: 4px 12px;
  border-radius: 4px;
}

.works-title {
  font-family: var(--font-display); /* Noto Sans JP Bold */
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-black);
  margin-bottom: 16px;
  transition: color 0.3s;
}

.works-link:hover .works-title {
  color: var(--theme-primary);
}

.view-detail {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--c-text-muted);
  transition: gap 0.3s, color 0.3s;
}

.view-detail .arrow {
  transition: transform 0.3s;
}

.works-link:hover .view-detail {
  color: var(--theme-accent);
  gap: 12px;
}

.works-link:hover .view-detail .arrow {
  transform: translateX(4px);
}

/* ==========================================================================
   5. EMPTY STATE & UTILITIES
   ========================================================================== */
.empty-state {
  text-align: center;
  padding: 100px 0;
}

.empty-state p {
  font-size: 1.1rem;
  color: var(--c-text-muted);
  margin-bottom: 24px;
  font-weight: 500;
}

/* ==========================================================================
   6. RESPONSIVE ADJUSTMENTS
   ========================================================================== */
@media (max-width: 900px) {
  .works-grid {
    grid-template-columns: 1fr; /* タブレット以下は1列で大きく見せる */
    gap: 48px;
  }
  
  .works-hero {
    padding-top: calc(var(--header-height) + 40px);
  }
}

@media (max-width: 640px) {
  .works-hero {
    text-align: left;
  }
  
  .works-filter-sticky {
    margin-bottom: 40px;
  }

  .works-title {
    font-size: 1.15rem;
  }
  
  .filter-btn {
    padding: 8px 18px;
    font-size: 0.8rem;
  }
}