body
{
   margin: 0;
   padding: 0;
   font-family: Arial, Helvetica, sans-serif;
   font-weight: bold;
   background-color: #0B0F14;
}

header
{
    background-color: #141B24;
    display: flex;
    justify-content: space-between;
    border: 1px solid #1F2A37;
    min-height: 75px;
    align-items: center;
    padding: 0 20px;
    box-sizing: border-box;
    flex-wrap: wrap;
}

.logo img
{
    width: 75px;
    height: auto;
}

.logo
{
    display: flex;
    align-items: center;
}

footer
{
    text-align: center;
    background-color: black;
    color: white;
    padding: 20px;
    margin-top: 50px;
}

.mrc
{
    font-weight: bold;
}

footer a 
{
    color: #2ea043;
}

.centrale 
{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 20px;
}

.centrale h1 
{
    color: white;
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(1.8rem, 4vw, 3rem);
}

.Chiffrer
{
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 40px;
    border: 1px solid rgba(46, 160, 67, 0.4); 
    border-radius: 8px; 
    padding: 30px; 
    background-color: rgba(22, 27, 34, 0.6); 
    box-shadow: 0 0 15px rgba(46, 160, 67, 0.15); 
    transition: 0.3s ease; 
    width: 100%;
    max-width: 450px;
    box-sizing: border-box;
}

.Chiffrer h2
{
    color: white;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    text-align: center;
}

.Chiffrer img
{
   width: 100%;
   max-width: 400px;
   height: auto;
}

.Dechiffrer
{
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 40px;
    border: 1px solid rgba(46, 160, 67, 0.4); 
    border-radius: 8px; 
    padding: 30px; 
    background-color: rgba(22, 27, 34, 0.6); 
    box-shadow: 0 0 15px rgba(46, 160, 67, 0.15);
    transition: 0.3s ease;
    width: 100%;
    max-width: 450px;
    box-sizing: border-box;
}

.Dechiffrer h2
{
    color: white;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    text-align: center;
}

.Dechiffrer img
{
   width: 100%;
   max-width: 400px;
   height: auto;
}

.lien
{
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 40px;
    padding: 0 20px;
}

.Chiffrer:hover
{
    border-color: #2ea043;
    box-shadow: 0 0 25px rgba(46, 160, 67, 0.4);
}

.Dechiffrer:hover
{
    border-color: #2ea043;
    box-shadow: 0 0 25px rgba(46, 160, 67, 0.4);
}

a 
{
    text-decoration: none;
}

.chiffrement-container 
{
    width: 90%;
    max-width: 600px;
    margin: 40px auto;
    padding: 30px;
    background-color: rgba(22, 27, 34, 0.8);
    border: 1px solid rgba(46, 160, 67, 0.4);
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(46, 160, 67, 0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    box-sizing: border-box;
}

.chiffrement-container h2 
{
    color: #ffffff;
    font-family: 'Orbitron', sans-serif;
    margin-bottom: 10px;
    text-align: center;
    font-size: 1.3rem;
}

.chiffrement-container textarea 
{
    width: 100%;
    height: 120px;
    background-color: #0d1117;
    border: 1px solid #30363d;
    border-radius: 6px;
    color: #ffffff;
    padding: 12px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
    resize: vertical;
    box-sizing: border-box;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.chiffrement-container textarea:focus 
{
    outline: none;
    border-color: #2ea043;
    box-shadow: 0 0 10px rgba(46, 160, 67, 0.4);
}

.chiffrement-container button 
{
    background-color: #238636;
    color: #ffffff;
    border: none;
    border-radius: 6px;
    padding: 10px 25px;
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s;
}

.chiffrement-container button:hover 
{
    background-color: #2ea043;
    box-shadow: 0 0 15px rgba(46, 160, 67, 0.6);
}

.copy-btn 
{
    background-color: #30363d;
    color: #c9d1d9;
    border: 1px solid #484f58;
    border-radius: 6px;
    padding: 8px 16px;
    font-family: 'Orbitron', sans-serif;
    font-size: 12px;
    cursor: pointer;
    margin-top: 5px;
    transition: all 0.3s ease;
}

.copy-btn:hover 
{
    background-color: #2ea043;
    color: #ffffff;
    border-color: #2ea043;
    box-shadow: 0 0 10px rgba(46, 160, 67, 0.4);
}

.Texte
{
    text-align: center;
    color: aliceblue;
    margin: 80px auto 40px auto;
    padding: 0 20px;
    max-width: 800px;
}

.Texte h2 {
    font-size: 1.15rem;
    line-height: 1.6;
    margin-bottom: 25px;
}

.Texte h3
{
    margin-top: 50px;
    text-align: center;
    font-size: 1rem;
    color: #2ea043;
}

.rapide
{
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
    align-items: center;
    justify-content: center;
}

.rapide a {
    font-family: 'Orbitron', sans-serif;
    font-size: 1rem;
    color: #c9d1d9;
    transition: color 0.3s, text-shadow 0.3s;
}

.rapide a:hover {
    color: #2ea043;
    text-shadow: 0 0 10px rgba(46, 160, 67, 0.6);
}

/* --- ADAPTATION MOBILE FLUIDE --- */
@media screen and (max-width: 768px) {
    header {
        flex-direction: column;
        padding: 15px;
        gap: 15px;
    }

    .rapide {
        gap: 15px;
    }

    .rapide a {
        font-size: 0.9rem;
    }

    .lien {
        flex-direction: column;
        gap: 25px;
    }

    .Chiffrer, .Dechiffrer {
        max-width: 100%;
        min-height: auto;
        padding: 20px;
    }

    .Texte {
        margin-top: 40px;
    }
}
```[cite: 14]