/* =============================================
     SHOP SECTION — Section 4
     CIALDINI: Social Proof — "Most Popular" label
     CIALDINI: Scarcity — "Only X copies left"
     CIALDINI: Authority — expert author credentials
     CIALDINI: Contrast — expensive item anchoring
  ============================================= */
  .shop {
    padding: 7rem 8vw;
    background: var(--ivory);
  }

  .shop-header {
    text-align: center;
    margin-bottom: 4rem;
  }

  .shop-header .section-headline em { color: var(--sage-dark); }

  .shop-subhead {
    font-size: 1rem;
    font-weight: 300;
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.8;
  }

  /* CIALDINI: Social Proof filter — "most popular" sort */
  .shop-filters {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
  }

  .filter-btn {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--slate);
    border: 1px solid var(--ivory-dark);
    background: transparent;
    padding: 0.5rem 1.2rem;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.2s;
  }

  .filter-btn.active, .filter-btn:hover {
    background: var(--forest);
    color: var(--ivory);
    border-color: var(--forest);
  }

  .products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
  }

  .product-card {
    background: var(--white);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 2px 20px rgba(44,62,45,0.06);
    transition: transform 0.25s, box-shadow 0.25s;
    position: relative;
    cursor: pointer;
  }

  .product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(44,62,45,0.12);
  }

  /* CIALDINI: Social Proof — badge on most popular */
  .product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    z-index: 2;
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    padding: 0.3rem 0.8rem;
    border-radius: 2px;
  }

  .badge-popular { background: var(--forest); color: var(--ivory); }
  .badge-new     { background: var(--rose); color: var(--white); }
  /* CIALDINI: Scarcity badge */
  .badge-few     { background: var(--gold); color: var(--forest); }

  .product-cover {
    height: 220px;
    overflow: hidden;
    background: #f5f1ea;
  }
  
  .product-cover img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    transition: transform 0.4s ease;
  }
  
  .product-card:hover .product-cover img {
    transform: scale(1.04);
  }

  .product-cover.green  { background: linear-gradient(135deg, #C8D9C4 0%, #8FA68A 100%); }
  .product-cover.rose   { background: linear-gradient(135deg, #EDD5CE 0%, #C4897A 100%); }
  .product-cover.slate  { background: linear-gradient(135deg, #D0D8E0 0%, #5A6472 100%); }
  .product-cover.forest { background: linear-gradient(135deg, #8FA68A 0%, #2C3E2D 100%); }
  .product-cover.gold   { background: linear-gradient(135deg, #F0DDB0 0%, #C9A96E 100%); }
  .product-cover.ivory  { background: linear-gradient(135deg, #F7F3EC 0%, #C8D9C4 100%); }

  .product-info {
    padding: 1.5rem 1.5rem 2rem;
  }

  .product-category {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--sage-dark);
    margin-bottom: 0.5rem;
  }

  .product-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--forest);
    margin-bottom: 0.5rem;
    line-height: 1.3;
  }

  .product-desc {
    font-size: 0.88rem;
    font-weight: 300;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 1.2rem;
  }

  /* CIALDINI: Authority — expert credential line */
  .product-author {
    font-size: 0.78rem;
    color: var(--slate-light);
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
  }

  .product-author::before {
    content: '✦';
    font-size: 0.6rem;
    color: var(--gold);
  }

  .product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
  }

  .product-price-wrap { display: flex; flex-direction: column; }

  /* CIALDINI: Contrast Principle — show old price before new */
  .product-price-old {
    font-size: 0.8rem;
    color: var(--slate-light);
    text-decoration: line-through;
    line-height: 1;
    margin-bottom: 0.15rem;
  }

  .product-price {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 400;
    color: var(--forest);
    line-height: 1;
  }

  /* CIALDINI: Scarcity — copies remaining */
  .product-stock {
    font-size: 0.72rem;
    color: var(--rose);
    font-weight: 400;
    margin-top: 0.3rem;
  }

  .btn-buy {
    background: var(--forest);
    color: var(--ivory);
    padding: 0.75rem 1.4rem;
    font-family: var(--font-body);
    font-size: 0.82rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    border: none;
    border-radius: 2px;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s;
    flex-shrink: 0;
  }

  .btn-buy:hover { background: var(--sage-dark); }