main{
    display:flex;
    min-height:100vh;
}

/* zone contenu */
.logiciel-wrapper{
    flex:1;

    display:flex;
    justify-content:center;
    align-items:center;

    padding:40px;

    background:
        radial-gradient(
            circle at center,
            rgba(0,90,180,0.10),
            transparent 60%
        );
}

/* carte */
.logiciel-card{
    width:100%;
    max-width:750px;

    padding:70px 60px;

    border-radius:30px;

    text-align:center;

    background:
        linear-gradient(
            145deg,
            rgba(15,15,15,0.94),
            rgba(20,30,45,0.92)
        );

    border:1px solid rgba(0,195,255,0.15);

    box-shadow:
        0 0 35px rgba(0,0,0,0.45),
        0 0 25px rgba(0,140,255,0.10);

    backdrop-filter:blur(6px);
}

/* titre */
.logiciel-card h3{
    font-size:72px;

    line-height:0.95;

    margin-bottom:40px;

    text-transform:uppercase;
    letter-spacing:5px;

    color:#8ed8ff;
}

/* texte */
.logiciel-text{
    font-size:24px;

    line-height:1.8;

    color:#d0d0d0;

    margin-bottom:50px;
}

/* progression */
.progress-box{
    width:100%;
    max-width:500px;

    height:26px;

    margin:0 auto;

    background:rgba(255,255,255,0.08);

    border-radius:50px;

    overflow:hidden;
}

.progress-bar{
    width:20%;
    height:100%;

    border-radius:50px;

    background:
        linear-gradient(
            90deg,
            #0077ff,
            #00d5ff
        );

    box-shadow:
        0 0 15px rgba(0,213,255,0.7);
}

.progress-text{
    margin-top:18px;

    margin-bottom:45px;

    color:#8f8f8f;

    font-size:16px;

    letter-spacing:1px;
}

/* bouton */
.retour-btn{
    display:inline-block;

    padding:18px 40px;

    border-radius:15px;

    background:
        linear-gradient(
            90deg,
            #005eff,
            #00bfff
        );

    color:white;

    font-size:18px;
    font-weight:bold;

    text-decoration:none;

    transition:0.25s;
}

.retour-btn:hover{
    transform:translateY(-3px);

    box-shadow:
        0 0 20px rgba(0,191,255,0.5);
}

@media screen and (max-width: 768px){

    .logiciel-wrapper{
        padding:25px 15px;
        align-items:flex-start;
    }

    .logiciel-card{
        padding:40px 25px;
        border-radius:20px;
    }

    .logiciel-card h3{
        font-size:52px;
        line-height:0.95;

        margin-bottom:30px;

        letter-spacing:2px;
    }

    .logiciel-text{
        font-size:18px;
        line-height:1.6;

        margin-bottom:35px;
    }

    .progress-box{
        height:20px;
    }

    .progress-text{
        font-size:14px;
        margin-bottom:35px;
    }

    .retour-btn{
        width:100%;

        padding:16px 20px;

        font-size:17px;
    }

}

@media screen and (max-width: 480px){

    .logiciel-card h3{
        font-size:42px;
    }

    .logiciel-text{
        font-size:16px;
    }

}