:root {
            --bg-color: #BCD9A2;
            --bg-hover: #A7C58B;
            --bg-darker: #4A5D3B;
            --text-black: #000000;
            --white: #ffffff;
            --accent: #8BA875;
            --transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        
        body { 
            font-family: "Xanh Mono", monospace; 
            background-color: var(--bg-color);
            color: var(--text-black);
            overflow-x: hidden;
            line-height: 1.6;
            scroll-behavior: smooth;
        }

        h1, h2, h3, h4, .italic { font-style: italic; }
        p { font-weight: 400; }

        /* --- UI COMPONENTS --- */
        .btn {
            padding: 15px 35px;
            background: var(--white);
            color: var(--text-black);
            border: 1px solid var(--text-black);
            cursor: pointer;
            transition: var(--transition);
            text-transform: uppercase;
            font-size: 0.8rem;
            display: inline-block;
            text-decoration: none;
            letter-spacing: 2px;
        }
        .btn:hover { background: var(--text-black); color: var(--white); transform: translateY(-3px); }

        .container { max-width: 1400px; margin: 0 auto; padding: 0 5%; }

        /* --- HEADER --- */
        header {
            background: var(--bg-color);
            height: 100px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 5%;
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(0,0,0,0.1);
        }
        .logo img { height: 150px; cursor: pointer; }
        nav { display: flex; gap: 50px; }
        nav a { 
            text-decoration: none; 
            color: var(--text-black); 
            font-size: 0.9rem;
            cursor: pointer;
            position: relative;
            padding-bottom: 5px;
        }
        nav a::after {
            content: ''; position: absolute; bottom: 0; left: 0;
            width: 0; height: 1px; background: var(--text-black);
            transition: width 0.3s ease;
        }
        nav a:hover::after { width: 100%; }

        .header-right { display: flex; align-items: center; gap: 30px; }

        /* --- HERO: 2-PART SPLIT --- */
        .hero {
            display: flex;
            height: calc(100vh - 100px);
            width: 100%;
        }
        .hero-left {
            width: 50%;
            position: relative;
            background: #000;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            border-right: 1px solid var(--text-black);
        }
        .slideshow-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0;
            transition: opacity 1.5s ease-in-out;
            transform: scale(1.05);
        }
        .slideshow-img.active { opacity: 0.6; transform: scale(1); transition: opacity 1.5s ease, transform 10s linear; }
        
        .hero-text-center {
            position: relative;
            z-index: 10;
            color: var(--white);
            text-align: center;
            padding: 50px;
            max-width: 80%;
        }
        .hero-text-center h1 { font-size: 4.5rem; line-height: 1; margin-bottom: 20px; text-shadow: 0 10px 30px rgba(0,0,0,0.5); }
        
        .hero-right { width: 50%; background: #000; }
        .hero-right video { width: 100%; height: 100%; object-fit: cover; }

        /* --- SECTIONS --- */
        .section-split { display: flex; min-height: 90vh; background: var(--white); }
        .ss-video { width: 50%; overflow: hidden; }
        .ss-video video { width: 100%; height: 100%; object-fit: cover; }
        .ss-content { 
            width: 50%; 
            padding: 100px; 
            display: flex; 
            flex-direction: column; 
            justify-content: center;
            background: #fdfdfd;
        }

        .parallax-section { display: flex; background: var(--bg-color); }
        .px-fixed { width: 50%; height: 100vh; position: sticky; top: 100px; overflow: hidden; }
        .px-fixed img { width: 100%; height: 100%; object-fit: cover; }
        .px-scroll { width: 50%; padding: 150px 10%; }
        .scroll-block { margin-bottom: 400px; }
        .scroll-block h2 { font-size: 3rem; margin-bottom: 30px; border-left: 5px solid var(--text-black); padding-left: 20px; }

        /* --- SHOP --- */
        .shop-layout { display: flex; gap: 50px; padding: 100px 5%; min-height: 100vh; }
        .shop-sidebar { width: 280px; flex-shrink: 0; }
        .filter-group { margin-bottom: 40px; }
        .filter-group h4 { margin-bottom: 15px; text-transform: uppercase; letter-spacing: 1px; }
        .filter-item { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; cursor: pointer; }
        
        .product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 40px; flex-grow: 1; }
        .product-card { 
            background: var(--white); 
            border: 1px solid var(--text-black); 
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .product-card:hover { transform: translateY(-10px); box-shadow: 15px 15px 0 var(--accent); }
        .p-img-box { height: 350px; overflow: hidden; border-bottom: 1px solid #eee; position: relative; }
        .p-img-box img { width: 100%; height: 100%; object-fit: cover; transition: 0.5s; }
        .product-card:hover .p-img-box img { transform: scale(1.1); }
        .p-info { padding: 30px; }
        .p-tag { font-size: 0.7rem; text-transform: uppercase; opacity: 0.5; margin-bottom: 5px; }

        /* --- AUTH --- */
        .auth-container { min-height: 80vh; display: flex; align-items: center; justify-content: center; padding: 50px; }
        .auth-card { background: var(--white); padding: 60px; border: 1px solid #000; width: 500px; box-shadow: 30px 30px 0 var(--text-black); }
        .input-group { margin-bottom: 25px; }
        .input-group label { display: block; margin-bottom: 10px; font-weight: bold; }
        .auth-input { width: 100%; padding: 15px; border: 1px solid #000; font-family: inherit; }

        /* --- MODAL --- */
        .modal { position: fixed; inset: 0; background: rgba(0,0,0,0.85); z-index: 2000; display: none; align-items: center; justify-content: center; padding: 20px; }
        .modal.active { display: flex; }
        .modal-inner { background: var(--bg-color); max-width: 1100px; width: 100%; display: grid; grid-template-columns: 1fr 1fr; border: 1px solid #000; overflow: hidden; max-height: 90vh; }
        .modal-media { background-size: cover; background-position: center; min-height: 500px; }
        .modal-content { padding: 60px; overflow-y: auto; }

        /* --- CART SIDEBAR --- */
        #cartSidebar {
            position: fixed; right: -450px; top: 0; width: 450px; height: 100vh;
            background: var(--white); z-index: 3000; transition: 0.5s;
            border-left: 2px solid #000; padding: 50px;
        }
        #cartSidebar.active { right: 0; }
        .cart-item { display: flex; gap: 20px; margin-bottom: 25px; padding-bottom: 20px; border-bottom: 1px solid #eee; }
        .cart-item img { width: 80px; height: 80px; object-fit: cover; border: 1px solid #000; }

        /* --- FOOTER --- */
        footer { background: var(--bg-darker); color: var(--white); padding: 100px 5% 50px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 80px; margin-bottom: 80px; }
        .footer-col h3 { font-size: 1.5rem; margin-bottom: 30px; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 10px; }
        .footer-col ul { list-style: none; }
        .footer-col li { margin-bottom: 15px; }
        .footer-col a { color: rgba(255,255,255,0.7); text-decoration: none; transition: 0.3s; font-size: 0.9rem; cursor: pointer; }
        .footer-col a:hover { color: var(--white); padding-left: 10px; }

        /* --- MISC --- */
        .page { display: none; }
        .page.active { display: block; }
        .fade-in { opacity: 0; transform: translateY(30px); transition: 1s ease-out; }
        .fade-in.visible { opacity: 1; transform: translateY(0); }