body {
    margin: 0;
    min-height: 100vh;

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

    font-family: "Helvetica Neue", Arial, sans-serif;

    background-image: url("Fond_site.svg");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}


.logo {
    padding-top: 40px;
    width: 160px;
    height: auto;
    display: block;
    margin: 0 0 0px;
    margin-bottom: 30px;
    
}

p {
    font-size: 20px;
    text-align: center;

}


h1 {
    margin-bottom: 20px;
}

form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

input[type="file"] {
    font-size: 16px;
}

button,
.btn-file {
    box-sizing: border-box;
    display: flex;
    justify-content: center;
    align-items: center;

    width: 200px;
    height: 40px;

    margin: 8px auto;
    font-size: 16px;
    cursor: pointer;

    background-color: #be1825;
    color: white;

    border: none;
    outline: none;
}


ol {
    max-width: 800px;
    font-size: 18px;
    line-height: 1.6;
    padding-left: 0;
    list-style-position: inside;
    text-align: center;
}

ol li {
    margin-bottom: 12px;
}

/* Transition hover pour les boutons */

button,
.btn-file {
    transition: background-color 0.2s ease;
}

button:hover,
.btn-file:hover {
    background-color: #99121e; /* version plus sombre de #457b9d */
}

.buttons-row {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap; /* évite de casser sur petit écran */
}