body {
    margin: 0;
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: #fff;
    font-family: var(--font-family);
    font-weight: 300;
    padding: 0;
    box-sizing: border-box;
    color: #333;
}

a{
    text-decoration: none;
    color: var(--secondary)
}
a:hover{ text-decoration: underline; }

h1, h2, h3, h4, h5, h6{
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
}


#logo_wrapper {
    display: flex;
    padding: 20px;
    justify-content: center;
}

#logo_spark {
    display: block;
    width: 220px;

}

/* Lettres cachées au départ */
#logo_spark path,
#logo_spark polygon,
#logo_spark rect {
    opacity: 0;
    transform: scale(0.8);
}

/* Effet d'apparition progressive, avec délai entre chaque lettre */
#logo_spark .classS { animation: appear 0.3s forwards ease-out 0s; }
#logo_spark .classP { animation: appear 0.3s forwards ease-out 0.1s; }
#logo_spark .classA { animation: appear 0.3s forwards ease-out 0.2s; }
#logo_spark .classR { animation: appear 0.3s forwards ease-out 0.3s; }
#logo_spark .classl { animation: appear 0.3s forwards ease-out 0.4s; }
#logo_spark .classK { animation: appear 0.3s forwards ease-out 0.5s; }
#logo_spark .classPoint { animation: appear 0.3s forwards ease-out 0.6s; }

@keyframes appear {
    from { opacity: 0; transform: scale(0.8); }
    to   { opacity: 1; transform: scale(1); }
}




.btn-fill{
    position: relative;
    display: inline-block;
    padding: 20px 40px;
    color: white;
    background-color: var(--primary);
    border-radius: var(--btn-border-radius);
    border: none;
    overflow: hidden;
    cursor: pointer;
    font-weight: 400;
    font-size: 15px;
    transition: background-color 0.3s ease;
    text-align: center;
    user-select: none;
}
.btn-fill:hover{
    text-decoration: none;
    background-color: var(--secondary);
}
.btn-fill.btn-fill-secondary{
    background-color: var(--secondary);
}
.btn-fill.btn-fill-secondary:hover{
    background-color: var(--primary);
}
.btn-fill-small{
    padding: 10px 20px;
}


input{
    border: 1px solid var(--secondary);
    font-weight: 400;
    padding: 15px 20px;
    border-radius: 4px;
    font-family: var(--font-family);
}