:root { 
            --jamie-green: #1B4332; 
            --jamie-green-hover: #2D6A4F; 
            --bg-color: #F4F6F9; 
            --surface-color: #FFFFFF; 
            --text-main: #1A1A1A; 
            --text-muted: #5C6B8A; 
            --border-color: #D1D9E6; 
            --font-heading: 'Playfair Display', serif; 
            --font-body: 'DM Sans', sans-serif; 
            --transition: all 0.3s ease; 
            --container-width: 1200px;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: var(--font-body); background-color: var(--bg-color); color: var(--text-main); line-height: 1.6; display: flex; flex-direction: column; min-height: 100vh; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        ul { list-style: none; }

        /* --- HEADER --- */
        header { background-color: white; border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 1000; padding: 1.2rem 2rem; }
        .header-inner { max-width: var(--container-width); margin: 0 auto; display: flex; justify-content: space-between; align-items: center; }
        .logo { font-family: var(--font-heading); font-size: 1.8rem; font-weight: 700; color: var(--jamie-green); }
        .main-nav { display: flex; gap: 2rem; font-weight: 500; font-size: 0.95rem; color: var(--text-muted); }
        .main-nav a:hover, .main-nav a.active { color: var(--jamie-green); }
        .utility-nav { display: flex; gap: 1.5rem; align-items: center; font-weight: 500; font-size: 0.95rem; }
        .cart-btn { background-color: var(--jamie-green); color: white; padding: 0.6rem 1.2rem; border-radius: 50px; font-weight: 700; font-size: 0.85rem; }
        .cart-btn:hover { background-color: var(--jamie-green-hover); transform: translateY(-2px); }

        /* --- BREADCRUMBS --- */
        .breadcrumbs { max-width: var(--container-width); margin: 2rem auto 0; padding: 0 2rem; font-size: 0.85rem; color: var(--text-muted); }
        .breadcrumbs span { margin: 0 0.5rem; }
        .breadcrumbs a:hover { color: var(--jamie-green); }

        /* --- MAIN CONTENT --- */
        .main-wrapper { flex-grow: 1; max-width: var(--container-width); margin: 0 auto; padding: 3rem 2rem 6rem; width: 100%; }
        .product-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start; }
        .product-image-large { width: 100%; aspect-ratio: 4/5; background-color: #E2E8F0; border-radius: 12px; overflow: hidden; box-shadow: 0 10px 30px rgba(27, 67, 50, 0.08); }
        .product-image-large img { width: 100%; height: 100%; object-fit: cover; display: block; }
        .product-details { padding-top: 1rem; }
        .product-details h1 { font-family: var(--font-heading); font-size: 3rem; margin-bottom: 1rem; color: var(--jamie-green); line-height: 1.15; }
        .product-price { font-size: 1.5rem; font-weight: 700; margin-bottom: 2rem; }
        .product-description { color: var(--text-muted); font-size: 1.05rem; margin-bottom: 2.5rem; border-bottom: 1px solid var(--border-color); padding-bottom: 2rem; }
        .option-group { margin-bottom: 2rem; }
        .option-group label { display: block; font-size: 0.85rem; font-weight: 700; text-transform: uppercase; margin-bottom: 0.8rem; }
        .size-options { display: flex; gap: 0.8rem; flex-wrap: wrap; }
        .size-btn { padding: 0.8rem 1.5rem; border: 1px solid var(--border-color); border-radius: 6px; background-color: var(--surface-color); cursor: pointer; font-weight: 600; transition: var(--transition); }
        .size-btn:hover, .size-btn.active { border-color: var(--jamie-green); background-color: var(--jamie-green); color: white; transform: translateY(-2px); }
        .btn-add-cart { display: block; width: 100%; background-color: var(--jamie-green); color: white; padding: 1.2rem; font-weight: 700; text-transform: uppercase; border-radius: 8px; text-align: center; cursor: pointer; transition: var(--transition); box-shadow: 0 4px 12px rgba(27, 67, 50, 0.2); border: none; font-family: inherit; font-size: 1rem; }
        .btn-add-cart:hover { background-color: var(--jamie-green-hover); transform: translateY(-3px); box-shadow: 0 8px 20px rgba(27, 67, 50, 0.3); }
        .product-meta { margin-top: 2.5rem; font-size: 0.95rem; color: var(--text-muted); background-color: var(--surface-color); padding: 1.5rem; border-radius: 8px; border: 1px solid var(--border-color); }
        .product-meta p { margin-bottom: 0.8rem; display: flex; align-items: center; gap: 0.8rem; }
        .product-meta p:last-child { margin-bottom: 0; }

        /* --- 404 STATE --- */
        .not-found { text-align: center; padding: 5rem 2rem; }
        .not-found h1 { font-family: var(--font-heading); font-size: 2.5rem; color: var(--jamie-green); margin-bottom: 1rem; }
        .not-found p { color: var(--text-muted); margin-bottom: 2rem; }
        .not-found a { display: inline-block; background-color: var(--jamie-green); color: white; padding: 1rem 2rem; border-radius: 50px; font-weight: 700; text-transform: uppercase; font-size: 0.9rem; }

        /* --- FOOTER --- */
        footer { background-color: var(--jamie-green); color: white; padding: 5rem 2rem 2rem; margin-top: auto; }
        .footer-grid { max-width: var(--container-width); margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 4rem; margin-bottom: 3rem; }
        .footer-brand h2 { font-family: var(--font-heading); font-size: 1.8rem; margin-bottom: 1rem; }
        .footer-brand p { color: #A0AEC0; font-size: 0.95rem; max-width: 300px; }
        .footer-col h3 { font-size: 0.85rem; text-transform: uppercase; margin-bottom: 1.5rem; }
        .footer-col ul li { margin-bottom: 1rem; }
        .footer-col ul li a { color: #A0AEC0; font-size: 0.95rem; }
        .footer-col ul li a:hover { color: white; }
        .footer-bottom { max-width: var(--container-width); margin: 0 auto; padding-top: 2rem; border-top: 1px solid #2D6A4F; text-align: center; font-size: 0.85rem; color: #A0AEC0; }

        @media (max-width: 1024px) { .product-layout { grid-template-columns: 1fr; gap: 3rem; } }
        @media (max-width: 768px) { .header-inner { flex-direction: column; gap: 1rem; } .main-nav { display: none; } .footer-grid { grid-template-columns: 1fr; } .product-details h1 { font-size: 2.2rem; } }