*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root{
    --primaire:#10B981;
    --secondaire:#047857;
    --tertiaire:#FBBF24;
    --quaternaire:#020617;
    --hauteur-entete: 90px;
}
::selection{
    background: var(--primaire);
    color: white;
}
html{
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}
body{
    font-family: sans-serif;
    background-color: #F4FBF7 ;
    color: #64748B ;
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
}
/* AJOUT : toutes les pages commencent sous le header fixe. */
body:not(.page-simple) > main{
    padding-top: var(--hauteur-entete);
}
section{
    padding: 50px 5%;
}
h1{
    margin-bottom: 20px;
    animation: entrer 0.6s ease-out both;
    font-size: clamp(2.2rem, 6vw, 3.5rem);
}
h2{
    font-size: clamp(1.9rem, 5vw, 3rem);
}
img{
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

span{
    display: inline-block;
}
hr{
    width: 80px;
    height: 4px;
    border: none;
    border-radius: 20px;
    background: linear-gradient(to right,#047857,#10B981);
    margin: 20px auto;
}
.btn{
    font-size: 1.2rem;
    display: inline-block;
    padding: 15px 20px;
    border-radius: 25px;
    background: var(--secondaire);
    color: white;
    font-weight: 600;
    transition:transform 0.5s ;
    transition:background 0.5s ;
}
.btn:hover{
    transform: translateY(-5px);
    background: var(--primaire);

}
.fond{    
    border: 1px solid;
    background: rgba(255, 255, 255, 0.3);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}
.fond:hover{
    background: rgba(255, 255, 255, 0.6);
}
nav span{
    color: #10B981;
}
ul{
    list-style: none;
}
a{
    text-decoration: none;
    
}


.skip-link{
    position: fixed;
    top: -80px;
    left: 15px;
    z-index: 2000;
    padding: 12px 18px;
    border-radius: 0 0 8px 8px;
    background: var(--quaternaire);
    color: white;
    font-weight: bold;
}

header{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    min-height: var(--hauteur-entete);
    background: rgba(255, 255, 255, 0.8);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    padding: 0 2%;
    z-index: 1000;
}

.logo-text{
    font-size: 1.8rem;
    color: var(--secondaire);
    font-weight: bold;
}
.logo-img{
    width: 8.4375rem; 
    height: auto;
    object-fit: cover;
}
nav ul{
    display: flex;
    align-items: center;
    gap: 16px; 
} 
nav a{
    font-size: 14px; 
    color: var(--quaternaire);
    font-weight: bold;
    transition: color 0.3s;
}
nav ul a:hover{
    color: var(--primaire);
}
.btn-don{
    font-size: 1.2rem;
    display: inline-block;
    background: var(--tertiaire);
    border-radius: 10px;
    padding: 15px 20px;
    color: white;
    font-weight: bold;
    transition: transform 0.5s;
    transition: background 0.5s ;
}
.btn-don:hover{
    transform: scale(1.1);
    background: var(--primaire);
}

.card{
    max-width:  100%;
    background: white;
    padding: 50px 20px;
    border-radius: 10px;
    box-shadow: 0px 2px 6px rgba(0,0,0,0.2);
    transition: transform 0.3s;
}
.card:hover{
    transform: translateY(-5px);
}


.insigne{
    font-size: 14px; 
    font-weight: 600; 
    color:var(--primaire);
    border-radius: 10px;
    background:rgb(16, 185, 129,0.1);        
    padding: 5px 15px;
    margin-bottom: 20px;
}

.devoile{
    overflow: hidden;
    position: relative;
    border-radius: 15px;
}
.devoile p{
    position:absolute;
    inset: 0;
    display:flex;
    justify-content:center;
    align-items:center;
    background:rgba(0,0,0,0.5);
    color:white;
    font-weight: bold;
    font-size: 16px;
    opacity:0;
    transition: 0.5s;
}
.devoile:hover p{
    opacity: 1;
}
.devoile:hover img{
    transform: scale(1.2);
}


.invite{
    padding: 110px 5%;
    width: 95%;
    margin: 30px auto 130px auto;
    background:var(--quaternaire) ;
    border-radius: 30px;
    color: white;

}
.invite h2{
    margin-bottom: 35px;
}
.invite p{
    font-size: 17px;
    max-width: 650px;
    line-height: 1.5;
    margin-bottom: 20px;
}


.flex{
    display: flex;
    gap: 15px;
}
.flex1{
    display: flex;
    justify-content: space-between;
    gap: 15px;
}
.flex-between{
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.flex2{
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
}
.flex3{
    display: flex;
    align-items: center;
}





footer{
    padding: 100px 100px 0 100px;
    background:var(--quaternaire);
}
footer span{
    color: #FBBF24;
}
.footer{
    display: flex;
    justify-content: space-between;
    padding-bottom: 100px;
}

.footer h2{
    color: var(--tertiaire);
    font-weight: 600;
    margin-bottom: 20px;
}
.footer h3{
    font-size: 16px;
    color: white;
    margin-top: 20px;
    margin-bottom: 30px;

}
.footer a,.footer p{
    color: #475569;
    font-size: 17px;
    transition: color 0.3s;
}
.footer a:hover{
    color: var(--tertiaire);
    
}
.footer p{
    font-size: 16px;
    max-width: 380px;
    line-height: 1.5;
}
.footer ul{
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.footer-icon{
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 20px;
    margin-top: 40px;
    color: white;
}
.footer-icon a,.footer-icon a:hover{color: white;}
.footer-icon i{
    border: 1px solid #ddd;
    border-radius: 50%;
    padding: 10px;
    transition: background 0.3s;
}
.footer-icon i:hover{
    background: var(--primaire);
    
}

.copy-right{
    padding: 35px 0px 50px 0px;
    border-top: 1px solid #64748B;
}
.copy-right p{
    font-size: 1rem;
}



@keyframes entrer{
    from{
        opacity: 0;
        transform: translateY(30px);
    }
    to{
        opacity: 1;
        transform: translateY(0);
    }
}
.animationEntrer{
    animation: entrer 0.8s ease-out both;
}
@media (max-width: 560px){
    html{
        font-size: 14px;
    }
}

@media (max-width:985px){
    .flex1{
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 20px;
    }
    .reverse{
        flex-direction: column-reverse;
    }
    .flex{
        flex-wrap: wrap;
    }
}
@media (max-width:1005px){
    html{
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
    }
    .footer,.copy-right{
        flex-direction: column;
        gap: 25px;
    }
    footer{
        padding: 100px 20px 0 50px;
    }
}



/* Pages de confirmation et d’erreur. */
.page-simple{
    background: linear-gradient(135deg, #f4fbf7, #d1fae5);
}
.message-page{
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 35px 20px;
}
.message-logo{
    width: 150px;
    height: auto;
    margin-bottom: -45px;
    z-index: 1;
}
.message-carte{
    width: min(680px, 100%);
    padding: 75px 35px 45px;
    text-align: center;
    border-radius: 25px;
    background: white;
    box-shadow: 0 15px 45px rgba(2, 6, 23, 0.12);
}
.message-carte h1{
    color: var(--secondaire);
}
.message-carte p{
    max-width: 550px;
    margin: 0 auto 30px;
    font-size: 1.05rem;
}
.message-actions{
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
}
.fond-clair{
    color: var(--secondaire);
    background: #ecfdf5;
    border: 1px solid var(--primaire);
}

@media (max-width: 720px){
    section{
        padding-left: 6%;
        padding-right: 6%;
    }
    nav ul{
        justify-content: center;
        flex-wrap: wrap;
    }
    .btn-don,.btn{
        padding: 10px 14px;
        font-size: 1rem;
    }
    footer{
        padding-left: 25px;
        padding-right: 25px;
    }
    .footer{
        padding-bottom: 55px;
    }
    .message-carte{
        padding-left: 20px;
        padding-right: 20px;
    }
}

@media (prefers-reduced-motion: reduce){
    *, *::before, *::after{
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}


.navigation-principale{
    display: flex;
    align-items: center;
    gap: 24px;
}
.menu-burger{
    display: none;
    width: 44px;
    height: 44px;
    padding: 9px;
    border: 1px solid rgba(4, 120, 87, 0.25);
    border-radius: 10px;
    background: white;
    cursor: pointer;
}
.menu-burger span{
    display: block;
    width: 100%;
    height: 3px;
    border-radius: 5px;
    background: var(--secondaire);
    transition: transform 0.3s, opacity 0.3s;
}
.menu-burger.actif span:nth-child(1){
    transform: translateY(12px) rotate(45deg);
}
.menu-burger.actif span:nth-child(2){
    opacity: 0;
}
.menu-burger.actif span:nth-child(3){
    transform: translateY(-8px) rotate(-45deg);
}

@media (max-width: 1005px){
    header{
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        flex-direction: initial;
        gap: 0 12px;
        padding: 8px 15px;
    }
    header .flex3{
        min-width: 0;
    }
    header .logo-img{
        width: 7rem;
    }
    header .logo-text{
        font-size: clamp(1.1rem, 4vw, 1.6rem);
        white-space: nowrap;
    }
    .menu-burger{
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        align-self: center;
    }
    .navigation-principale{
        grid-column: 1 / -1;
        width: 100%;
        max-height: 0;
        overflow: hidden;
        visibility: hidden;
        opacity: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        transition: max-height 0.35s ease, opacity 0.25s ease;
    }
    .navigation-principale.ouvert{
        max-height: 430px;
        visibility: visible;
        opacity: 1;
        padding: 10px 0 12px;
    }
    .navigation-principale ul{
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        flex-wrap: nowrap;
        gap: 0;
    }
    .navigation-principale li{
        width: 100%;
    }
    .navigation-principale a:not(.btn-don){
        display: block;
        width: 100%;
        padding: 12px;
        text-align: center;
        border-bottom: 1px solid rgba(100, 116, 139, 0.18);
    }
    .navigation-principale .btn-don{
        align-self: center;
        margin-top: 12px;
    }
}