body{
    font-family: "Karla", sans-serif;
    margin: 0;
    line-height: 1.5;
    font-size: 16px;
}

/* Menu */
.header__menu--toggle{
    cursor: pointer;
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 20;
    background-color: #E99CA5;
    border-radius: 15px;
    padding: 10px;
    border: none;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}
.menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 35%;
    height: 100%;
    background-color: #E99CA5;
    z-index: 10;
    transform: translateX(100%);
    transition: transform 0.7s ease;
}
.menu.menu--open {
    transform: translateX(0);
}
.menu a{
    color: black;
    text-decoration: none;
}
.menu__el--active a {
    text-decoration: underline;
    color: #4762ac;
}
ul {
    list-style: none;
}
.menu__liste{
    padding: 20px;
    margin-top: 50px;
}
.menu__el{
    margin: 10px;
}

/* Main page index */
.main__number {
    color: #E99CA5;
    font-weight: bold;
    margin-right: 6px;
}
.main__title, .casestudy__title{
    display: flex;
    justify-content: center;
    margin-top: 50px;
    font-size: 45px;
}
.main__subtitle{
    padding: 0px 20px;
    font-size: 32px;
}
.main__description{
    margin: 30px 0px;
    padding: 10px 20px;
    background-color: #E99CA5;
}
.main__desc{
    padding: 0px 20px;
}


/* Section projet page index */
.project {
    background-color: #fAFAFA;
    border-radius: 16px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 0 20px 50px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}
.project__title{
    font-size: 23px;
}
.project__btn{
    display: inline-block;
    padding: 5px 0px;
    background: #E99CA5;
    text-decoration: none;
    border-radius: 6px;
    text-align: center;
    margin: 0px 60px; 
    color: black;
}
.project__title, .project__desc{
    margin: 0;
}
.project__image{
    display: block;     
    margin: 10px auto;  
    width: 70%;         
}

/* Footer */
.footer {
  position: relative;
  padding: 10px 16px 16px;  
  text-align: center;       
}
.footer a{
    color: black;
    text-decoration: none;
}
.footer::before {
    content: "";
    display: block;
    width: 200px;              
    height: 4px;               
    background-color: #E99CA5; 
    margin: 0 auto 15px auto;  
    border-radius: 5px;        
}
.footer__social {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 16px;              
    margin-bottom: 16px;
    flex-wrap: wrap;  
}

/* Timeline */
.casestudy__timeline {
    position: relative;
    max-width: 100%;
    margin: 30px auto;
    padding-left: 40px; 
}
.casestudy__timeline::before {
    content: "";
    position: absolute;
    left: 20px;
    top: 0;
    width: 4px;
    height: 100%;
    background-color: #e8a1a6;
}
.casestudy__item {
    position: relative;
    margin-bottom: 60px;
    opacity: 1;            
    transform: none;        
}
.casestudy__step {
    position: absolute;
    left: -35px;            
    top: 0;
    width: 35px;
    height: 35px;
    background-color: #e8a1a6;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    transform: scale(1);     
    transition: none;       
}
.casestudy__content {
    width: 100%;
    box-sizing: border-box; 
    padding-right: 20px;    
    padding-left: 20px;    
}
.casestudy__subtitle {
    font-size: 23px;
    margin-bottom: 10px;
}
.casestudy__subtitle--left {
    font-size: 23px;
    padding-left: 20px;
}
.casestudy__image {
    width: 60%;
    margin: 50px auto;
    display: block;
}
.casestudy__image--small{
    max-width: 50%;
    border-radius: 10px;
    margin-top: 10px;
}
.casestudy__text--center, .casestudy__desc{
    padding: 0px 20px;
}
.casestudy__list{
    padding-left: 20px;
}
.casestudy__el::before{
    content: "\2713";
    color: #E99CA5;
    font-weight: bold;
    margin-right: 10px;
}

/* Slider */
.slider__list {
    display: flex;
    gap: 30px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    margin: 20px 0px;
    list-style: none;
    justify-content: start;
}   
.slider {
    width: 100%;
    overflow: hidden;
    padding-left: 10%;   
    padding-right: 10%;
    box-sizing: border-box;
}
.slider__el {
    min-width: 80%;
    flex-shrink: 0;
    scroll-snap-align: center;
    background: #fafafa;
    margin-right: 1rem;
    padding: 1rem;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}
.slider__controls {
    display: none;
}
.slider__btn{
    background-color: #E99CA5;
    color: black;
    text-decoration: none;
    border-radius: 6px;
    text-align: center;
    margin: 10px 60px;
    padding: 8px 10px;
}
.slider__text{
    margin: 0 0 20px 0;
}
.slider__subtitle{
    margin: 0;
}
.casestudy__image--petit{
    max-width: 50%;
    border-radius: 20px;
    margin-top: 30px;
    padding-left: 60px;
}
.casestudy__subtitle--gauche{
    padding-left: 50px;
}

@media (min-width: 700px){
    body{
        font-size: 18px;
    }

    /* Menu */
    .menu a:hover{
        color: #4762ac;
    }
    .menu__el a {
        display: inline-block;
        padding: 6px 12px;
        border-radius: 6px;
        text-decoration: none;
        color: black;
        transition: background-color 0.3s ease, color 0.3s ease;
    }
    .menu__el--active a {
        background-color: #fAFAFA;
        color: #4762ac;
        box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    }
    .menu {
        width: 100%;
        height: 60px;
        display: flex;
        align-items: center;
        justify-content: center;
        transform: none;
        left: 0;
    }
    .menu__liste {
        display: flex;
        gap: 20px;
        padding: 0;
        margin: 0;
        list-style: none;
        font-size: 18px;
    }
    .header__menu--toggle {
        display: none;
    }

    /* Main index */
    .main__title{
        margin-top: 90px;
        font-size: 51px;
    }
    .main__subtitle{
        padding: 0px 40px;
        font-size: 36px;
    }
    .main__description{
        padding: 20px 40px;
    }
    .main__desc{
        padding: 0px 40px;
    }
    /* Section projet page index */
    .project {
        display: grid;
        grid-template-columns: 1fr 1fr; 
        grid-template-rows: 1fr 1fr 1fr; 
        gap: 24px;
        padding: 24px 40px;
    }
    .project__title {
        font-size: 25px;
        grid-column: 1 / 2;
        grid-row: 1;
        text-align: left;
    }
    .project__desc {
        grid-column: 1 / 2;
        grid-row: 2;
        text-align: left;
    }
    .project__btn {
        grid-column: 1 / 2;
        grid-row: 3;
        width: fit-content;
        margin: 0;
        padding: 10px 10px;
    }
    .project__btn:hover{
        color: #FFFFFF;
    }
    .project__image {
        grid-column: 2 / 3;
        grid-row: 1 / 4; 
        width: 100%;
        max-width: 300px;
        height: auto;
        margin: 0;
        border-radius: 8px;
        justify-self: end; 
        align-self: center; 
    }

    /* Footer */
    .footer::before{
        width: 400px;
    }
    .footer a:hover{
        color: #E99CA5;
    }

    /* Intro */
    .casestudy__intro{
        display: grid;
        grid-template-columns: repeat(7, 1fr);
        grid-template-rows: repeat(9, 90px);
        gap: 10px;
        align-items: start;
        max-width: 680px;
        margin: 0 auto;
        padding-top: 80px;
    }
    .casestudy__title{
        grid-column: 1 / -1;
        grid-row: 1;
        font-size: 51px;
        margin: 0;
    }
    .casestudy__desc:nth-of-type(1){
        grid-column: 1 / 5;
        grid-row: 2;
        margin-top: 30px;
    }
    .casestudy__desc:nth-of-type(2){
        grid-column: 1 / 5;
        grid-row: 3;
        margin: 0;
    }
    .casestudy__image{
        grid-column: 5 / 8;
        grid-row: 2 / 4;
        width: 70%;
        margin-top: 20px;
        padding: 0;
    }
    .casestudy__subtitle--left{
        grid-column: 1 / 5;
        grid-row: 4;
        margin-top: 40px;
        font-size: 25px;
    }
    .casestudy__intro > p.casestudy__text--center:nth-of-type(3){
        grid-column: 1 / 5;
        grid-row: 5 / 7;
    }
    .casestudy__intro > p.casestudy__text--center:nth-of-type(4){
        grid-column: 1 / 5;
        grid-row: 7 / 9;
    }
    .casestudy__subtitle--left:nth-of-type(2){
        grid-column: 5 / 8;
        grid-row: 5;
    }
    .casestudy__list{
        grid-column: 5 / 8;
        grid-row: 6 / 9;
        background-color: #fAFAFA;
        border-radius: 10px;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        padding: 20px;
    }
    .casestudy__subtitle{
        font-size: 25px;
    }

    /* Slider */
    .slider {
        max-width: 600px;   
        margin: 0 auto;
        position: relative;
    }
    .slider__el {
        display: none;          
        text-align: center;
        padding: 20px;
        background: #fafafa;
        border-radius: 12px;
        box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    }
    .slider__el--show {
        display: block;        
    }
    .slider__nav {
        display: flex;
        justify-content: space-evenly;
        align-items: center;
        margin: 15px 0px;
    }
    .slider__controls {
        display: flex;
        gap: 0;
        padding: 0;
        list-style: none;
        margin: 0;
    }
    .slider__btn {
        padding: 8px 16px;
        border: none;
        background-color: #E99CA5;
        color: #000;
        border-radius: 8px;
        cursor: pointer;
        margin: 0;
    }
    .slider__pagination {
        display: flex;
        justify-content: center;
        gap: 10px;
        padding: 0;
        list-style: none;
        margin: 0;
    }
    .slider__dot {
        width: 12px;
        height: 12px;
        background: #ccc;
        border-radius: 50%;
        cursor: pointer;
    }
    .slider__dot--active {
        background: #000;
    }

    /* Timeline anim */
    .casestudy__item--hidden {
        opacity: 0;
        transform: translateY(40px);
    }
    .casestudy__content{
        padding-right: 150px;
    }
    .casestudy__timeline{
        padding-left: 150px;
    }
    .casestudy__text{
        margin: 15px 40px 15px 0;
    }
    .show {
        opacity: 1;
        transform: translateY(0);
        transition: all 0.6s ease-out;
    }
    .casestudy__step {
        transform: scale(0);
        transition: transform 0.4s ease-out;
        left: -25px;
    }
    .show .casestudy__step {
        transform: scale(1);
    }
    .casestudy__timeline::before {
        content: "";
        position: absolute;
        left: 140px;
        top: 0;
        width: 4px;
        height: 0;
        background-color: #e8a1a6;
        animation: draw-line 1.5s ease-out forwards;
    }
    @keyframes draw-line {
        to {
            height: 100%;
        }
    }
    .casestudy__image--small{
        max-width: 40%;
        border-radius: 20px;
        margin-top: 40px;
    }
    .casestudy__image--petit{
        max-width: 25%;
        border-radius: 20px;
        margin-top: 40px;
        padding-left: 150px;
    }
    .casestudy__subtitle--gauche{
        padding-left: 150px;
    }

}
@media (min-width: 1200px){
    body{
        font-size: 20px;
    }

    /* Menu */
    .menu a{
        font-size: 22px;
    }
    .menu {
        width: 100%;
        height: 60px;
        display: flex;
        align-items: center;
        justify-content: center;
        transform: none;
        left: 0;
    }
    .menu__liste {
        display: flex;
        gap: 40px;
        padding: 0;
        margin: 0;
        list-style: none;
        font-size: 18px;
    }
    .header__menu--toggle {
        display: none;
    }

    /* Main index */
    .main__title{
        margin-top: 130px;
        font-size: 57px;
    }
    .main__subtitle{
        padding: 0px 250px;
        font-size: 40px;
    }
    .main__description{
        padding: 40px 250px;
        margin: 80px 0px;
    }
    .main__desc{
        padding: 0px 250px;
    }

    /* Section projet index */
    .project {
        margin: 0 250px 100px;
    }
    .project__title {
        font-size: 28px;
    }
    .project__btn {
        margin: 0;
        padding: 8px 10px 6px 10px;
        height: 35px;
        transition: transform 0.3s ease, background-color 0.3s ease;
    }
    .project__btn:hover {
        transform: scale(1.1);
        background-color: #b8787f;
    }
    .project__image {
        max-width: 400px; 
    }

    /* Timeline */
    .casestudy__image{
        margin: 0;
        grid-column: 5 / 8;
    }
    .casestudy__intro{
        max-width: 1100px;
        gap: 40px;
        grid-template-rows: repeat(7, 90px);
    }
    .casestudy__item--hidden {
        opacity: 0;
        transform: translateY(40px);
    }
    .casestudy__text{
        margin: 15px 0px;
    }
    .show {
        opacity: 1;
        transform: translateY(0);
        transition: all 0.6s ease-out;
    }
    .casestudy__step {
        transform: scale(0);
        transition: transform 0.4s ease-out;
        left: -25px;
    }
    .show .casestudy__step {
        transform: scale(1.3);
    }
    .casestudy__timeline{
        padding-left: 200px;
    }
    .casestudy__timeline::before {
        content: "";
        position: absolute;
        left: 190px;
        top: 0;
        width: 4px;
        height: 0;
        background-color: #e8a1a6;
        animation: draw-line 1.5s ease-out forwards;
    }
    .casestudy__subtitle, .casestudy__subtitle--left{
        font-size: 28px;
    }
    .casestudy__text--center{
        margin: 0;
    }
    .casestudy__intro > p.casestudy__text--center:nth-of-type(4){
        grid-column: 1 / 4;
        grid-row: 6 / 8;
    }
    .casestudy__list{
        grid-column: 5 / 8;
        grid-row: 5 / 7;
        background-color: #fAFAFA;
        border-radius: 10px;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        padding: 20px;
    }
    .casestudy__subtitle--left:nth-of-type(2){
        grid-column: 5 / 8;
        grid-row: 4;
    }
    .casestudy__subtitle--gauche{
        padding-left: 200px;
    }
    .casestudy__content{
        padding-right: 300px;
    }
    @keyframes draw-line {
        to {
            height: 100%;
        }
    }
    /* Footer */
    .footer::before{
        width: 700px;
    }
    .slider{
        width: 100%;
        max-width: 1100px;
        margin: 0 auto;
        position: relative;
    }
    .slider__list{
        padding: 0px 150px;
        display: block;
    }
    .slider__el--show{
        margin: 0;
    }
    .casestudy__image--small{
        max-width: 50%;
        border-radius: 20px;
        margin-top: 40px;
    }
    .casestudy__image--petit{
        max-width: 30%;
        border-radius: 20px;
        margin-top: 40px;
        padding-left: 200px;
    }
    
}