:root{
    --black-color: #263238;
    --base-color: #BAEF00;
    --base-color-hover: #D9FF56;
    --base-color-active: #A3D200;   
    --border-color: #E3E3E3;
    --placeholder-color: #8D8D8D;
    --placeholder-color-opacity: #b9b8b8;
    --transition-duration: .3s;
    --price-color: #6C6C6C;
}


html{
    box-sizing: border-box;
}

*,
::after,
::before{
    box-sizing: inherit;
}

body{
    font-size: 16px;
    font-family: "Open Sans";
    margin: 0;
    color: var(--black-color);
    background-color: white;
}

img{
    max-width: 100%;
}


a{
    text-decoration: none;
}


/* Container */
.container{
    max-width: 1200px;
    margin: 0 auto;
    padding: 0px 15px;
}


/* Header */

.header{
    background-color: var(--black-color);
}

.header__container{
    display: flex;
    justify-content: space-between;
    align-items: center;
}


.header__logo{
    display: block;
    padding: 22px;
    background-color: var(--base-color);
    transition: opacity var(--transition-duration), background-color var(--transition-duration);
}

.header__logo:focus-visible{
    opacity: .8;
}

.header__logo:hover{
    background-color: var(--base-color-hover);
}

.header__logo:active{
    background-color: var(--base-color-active);
}

/* Hero */
.hero__container{
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 80px;
    padding-bottom: 80px;
    gap: 30px;
}

.hero__container::after{
    content: "";
    display: block;
    flex-basis: 450px;
    height: 375px;
    background-image: url(../img/hero.svg);
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.hero__content{
    flex-basis: 484px;
}

.hero__title{
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 34px;
}

.hero__desc{
    max-width: 360px;
    font-size: 20px;
    margin-top: 0;
    margin-bottom: 48px;
}

/* Feedback Form */
.callback{
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.callback::before{
    content: "";
    display: block;
    background-image: url(../img/callback-left.png);
    background-size: cover;
    background-position: center;
}

.callback__right{
    color: white;
    padding: 72px 50px;
    display: block;
    background-image: linear-gradient(90deg,rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0.5) 100%), url(../img/callback-right.png);
    background-size: cover;
    background-position: center;
}

.callback__title{
    font-size: 0;
    position: absolute;
    width: 0;
    height: 0;
    opacity: 0;
}

.callback__desc{
    max-width: 424px;
    font-size: 20px;
    margin-bottom: 26px;
    margin-top: 0;
}

/* Catalog Shop */
.catalog{
    padding: 80px 0;
}


.subtitle.catalog__subtitle{
    margin-bottom: 60px ;
}


.catalog__list{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin: 0;
    padding: 0;
    list-style-type: none;
}

.catalog__item_big-card{
    grid-column: span 2;
}

.catalog__card{
    height: 100%;
}

.catalog__item-promo{
    outline: 2.5px solid #6ba000;
    border-radius: 18px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 5px #416002;
}

.catalog__item-promo::before{
    content: "DISCOUNT";
    position: absolute;
    top: 0; /* прижмем к верху карточки */
    left: 50%; /* середина */
    transform: translateX(-50%); /* корректируем смещение */
    background-color: #6ba000;
    border-bottom-right-radius: 10px;
    border-bottom-left-radius: 10px;
    padding: 10px 30px;
    color: white;
    font-weight: 700;
    box-shadow: 0 0 2px #416002;
}

.catalog__item{
    transition: all var(--transition-duration);
}

.catalog__item:hover{
    transform: scale(1.05);
}

/* Footer logo */
.footer{
    display: flex;
    justify-content: center;
    padding: 23px 15px;
    background-color: var(--border-color);
}

.footer__logo{
    opacity: .5;
}


/* Link */
.default-link{
    color: var(--black-color);
    text-decoration: underline;
    transition: color var(--transition-duration), background-color var(--transition-duration);
}

.default-link:focus-visible{
    outline: none;
    background-color: var(--base-color);
}

.default-link:hover{
    color: var(--base-color-hover);
}

.default-link:active{
    background-color: var(--base-color-active);
}

/* Button */
.default-btn{
    display: inline-block;
    padding: 11px 47px;
    color: var(--black-color); 
    background-color: var(--base-color);   
    border-radius: 12px;
    border: none;
    outline: 1px solid transparent;
    outline-offset: 2px;
    transition: outline var(--transition-duration), background-color var(--transition-duration);
    cursor: pointer;
}

.default-btn:focus-visible{
    outline-color: var(--base-color);
}

.default-btn:hover{
    background-color: var(--base-color-hover);
}


/* Text Field */
.text-field{
    padding: 11px 16px 11px 16px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    outline: none;
    transition: border-color var(--transition-duration);
}

.text-field::placeholder{
    color: var(--placeholder-color);
}

.text-field:focus{
    border-color: var(--base-color);
}

/* Subtitle */
.subtitle{
    margin: 0;
    text-align: center;
    font-weight: 700;
    font-size: 34px;
}

/* Logo */
.logo{
    width: 154px;
    display: block;
}

/* Meny NAV */
.menu__list{
    display: flex;
    align-items: center;
    gap: 50px;
    list-style: none;
    margin: 0;
    padding-left: 0;
}

.menu__link{
    color: white;
    outline: none;
    transition: color var(--transition-duration);
}

.menu__link:focus-visible{
    outline: none;
    color: var(--black-color);
    background-color: var(--base-color);
}

.menu__link:hover{
    color: var(--base-color-hover);
}

.menu__link:active{
    background-color: var(--base-color-active);
}
 
/* Form Input */
.callback-form{
    display: flex;
    gap: 16px;
}

.callback-form__input{
    flex-basis: 288px;

}

/* Product  Card BMX Bike */
.product-card{
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    background-color: white;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.product-card__body{
    padding: 15px;
    display: flex;
    flex-basis: 100%;
    flex-direction: column;
    justify-content: space-between;
}

.product-card__title{
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 21px;
    font-weight: 700;

}

.product-card__price{
    font-size: 18px;
    color: var(--price-color);
    font-weight: 700;
}

.product-card__upper-body{
    margin-bottom: 22px;
}

.product-card__btn{
    width: 100%;
}

.product-card__img{
    display: block;
    flex-shrink: 0;
    height: 180px;
    width: 100%;
    object-fit: contain;
    border-top-right-radius: 12px;
    border-top-left-radius: 12px;
}

/* Layered Big Card (modifications) */
.product-card_layered-card{
    position: relative;
    height: 350px;  
    border: none;
}

.product-card__img-layered-card{
    height: 100%;
    border-radius: 12px;
    object-fit: cover;
}

.product-card__body_layered-card{
    position: absolute;
    bottom: 0;
    width: 100%;
    background-color: rgba(0, 0, 0, .5);
    border-radius: 12px;
    color: white;
    align-items: flex-start;
}

.product-card__price_layered-card{
    color: white;
}

.product-card__btn_layered-card{
    width: initial;
}


/* Media Request (mobile) */
@media (max-width: 920px){
    /* Form Input */
    .callback-form{
        flex-direction: column;
    }

    .callback-form__input{
        flex-basis: initial;
    }

    /* Product  Card BMX Bike */
    .product-card__body{
        padding: 10px; 
    }

    .product-card__title{
        font-size: 14px;
        
    }

    .product-card__upper-body{
        margin-bottom: 22px;
    }

    .product-card__img{
        height: 90px;
    }

    .product-card__price{
        font-size: 14px;
    }

    /* Layered Card */

    .product-card__img-layered-card{
        height: 100%;
    }

    .product-card__btn_layered-card{
        width: 100%;
    }
    
    /* Header */

    .header__container{
        display: block;
        padding-left: 0;
        padding-right: 0;
    }
    
    .header__logo{
        display: flex;
        justify-content: center;
    }

    .header__menu{
        padding: 20px;
        width: 100%;
        overflow-x: scroll;
    }

    .header__menu-list{
        padding-left: 15px;
        padding-right: 15px;
        width: fit-content;
    }

    /* Hero */

    .hero__container{
        padding-top: 40px;
        padding-bottom: 40px;
    }

    .hero__container::after{
        display: none;
    }

    .hero__title{
        font-size: 28px;
    }


    /* Feedback Form */
    .callback{
        display: block;
    }

    .callback__right{
        padding-left: 15px;
        padding-right: 15px;
    }



    .callback::before{
        content: "";
        display: none;
    }  

    /* Catalog */

    .catalog{
        padding: 40px 0;
    }

    .subtitle.catalog__subtitle{
        margin-bottom: 30px;
    }

    .catalog__list{
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }


    /* Promo */


    .catalog__item-promo::before{
        padding: 5px 10px;
        font-size: 12px;
    }
}