* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background: #111;
    color: white;
}

.hero {
    min-height: 420px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.hero h1 {
    font-size: 64px;
    letter-spacing: 5px;
}

.hero p {
    margin-top: 15px;
    font-size: 22px;
}

.categories {
    padding: 50px 8%;
    text-align: center;
}

.categories h2 {
    font-size: 36px;
    margin-bottom: 35px;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.category-card {
    background: #1f1f1f;
    padding: 45px 20px;
    border-radius: 18px;
    transition: 0.3s;
}

.category-card:hover {
    transform: translateY(-8px);
}

.category-card h3 {
    font-size: 24px;
    margin-bottom: 12px;
}

.category-card p {
    line-height: 1.6;
    color: #ccc;
}

@media (max-width: 900px) {
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 500px) {
    .category-grid {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 42px;
    }
}

.category-card img {
    width: 100%;
    height: 750px;
    object-fit: cover;
    border-radius: 14px;
    margin-bottom: 18px;
}
.preworkout-hero {
    width: 100%;
    height: 750px;
    object-fit: cover;
    border-radius: 14px;
    margin-bottom: 18px;
}.preworkout-hero {
    width: 100%;
    height: 750px;
    object-fit: cover;
    border-radius: 14px;
    margin-bottom: 18px;
}
.muscle-hero {
    width: 100%;
    height: 750px;
    object-fit: cover;
    border-radius: 14px;
    margin-bottom: 18px;
}
.greenresetdetox-hero {
    width: 100%;
    height: 750px;
    object-fit: cover;
    border-radius: 14px;
    margin-bottom: 18px;
}

.explore-btn {
    display: inline-block;
    margin-top: 20px;
    padding: 18px 34px;
    background: #b7ff00;
    color: #000;
    text-decoration: none;
    font-size: 20px;
    font-weight: 700;
    border-radius: 18px;
    transition: 0.3s ease;
}

.explore-btn:hover {
    transform: translateY(-3px);
    background: #d0ff4d;
}

.logo-card {
    width: 100%;
    text-align: center;
    background: transparent;
    padding: 20px;
    overflow: visible;
}

.logo-hero {
    width: 80%;
    max-width: 1500px;
    height: auto;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

/* ===================================
   VITAMIN RUSH PRODUCT CATALOGUE
=================================== */

.catalogue-header {
    text-align: center;
    padding: 45px 20px 30px;
    background: #111;
}

.catalogue-header h1 {
    font-size: 46px;
    letter-spacing: 3px;
    margin-bottom: 10px;
}

.catalogue-header p {
    color: #bbb;
    font-size: 18px;
    margin-bottom: 20px;
}

.back-home {
    display: inline-block;
    color: #b7ff00;
    text-decoration: none;
    font-weight: bold;
    margin-top: 10px;
}


/* Catalogue Grid */

.product-catalogue {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: 30px;

    max-width: 1450px;

    margin: 0 auto;

    padding: 35px;
}


/* Product Card */

.product-item {
    background: #1c1c1c;

    border: 2px solid transparent;

    border-radius: 22px;

    padding: 16px;

    text-align: center;

    transition: 0.3s ease;

    overflow: hidden;
}


.product-item:hover {
    transform: translateY(-5px);
}


.product-item.selected {
    border-color: #b7ff00;

    box-shadow:
        0 0 0 2px rgba(183,255,0,0.12);
}


/* Product Images */

.product-item img {
    width: 100%;

    height: 850px;

    object-fit: cover;

    border-radius: 17px;

    display: block;
}


/* Product Name */

.product-item h2 {
    margin-top: 20px;

    font-size: 28px;

    color: white;
}


/* Ingredients */

.ingredients {
    margin-top: 8px;

    min-height: 48px;

    color: #bbb;

    font-size: 16px;

    line-height: 1.5;
}


/* SELECT ME Button */

.select-btn {
    margin-top: 20px;

    padding: 15px 30px;

    width: 100%;

    border: none;

    border-radius: 15px;

    background: #b7ff00;

    color: black;

    font-size: 18px;

    font-weight: 800;

    cursor: pointer;

    transition: 0.25s ease;
}


.select-btn:hover {
    transform: translateY(-2px);
}


.product-item.selected .select-btn {
    background: white;
}


/* ===================================
   CHECKOUT PANEL
=================================== */

.checkout-panel {

    max-width: 900px;

    margin: 20px auto 70px;

    padding: 35px;

    border-radius: 24px;

    background: #1c1c1c;

    text-align: center;

}


.selected-label {

    font-size: 13px;

    letter-spacing: 2px;

    color: #999;

}


#selected-product {

    margin: 10px 0 25px;

    font-size: 30px;

    color: white;

}


/* PAY BUTTON */

.pay-btn {

    display: inline-block;

    padding: 18px 42px;

    background: #b7ff00;

    color: black;

    text-decoration: none;

    font-size: 21px;

    font-weight: 900;

    border-radius: 18px;

    transition: 0.25s ease;

}


.pay-btn:hover {

    transform: translateY(-3px);

}


.pay-btn.disabled {

    pointer-events: none;

    opacity: 0.35;

}


/* ===================================
   MOBILE
=================================== */

@media (max-width: 750px) {

    .product-catalogue {

        grid-template-columns: 1fr;

        padding: 18px;

        gap: 22px;

    }


    .product-item img {

        height: auto;

    }


    .catalogue-header h1 {

        font-size: 34px;

    }


    .checkout-panel {

        margin: 20px 18px 50px;

        padding: 25px 18px;

    }


    .pay-btn {

        width: 100%;

    }

}