.container-presentation {
    width: 100%;
    height: 100vh;
    position: relative;
    background: linear-gradient(135deg, #0D1F47, #1E355E);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.container-presentation .container {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.container-presentation .container::before {
    content: "";
    position: absolute;
    top: -50%;
    left: 50%;
    width: 100%;
    max-width: 800px;
    height: 100%;
    max-height: 800px;
    background: radial-gradient(circle, rgb(var(--primary-color)) 0%, transparent 60%);
    opacity: 0.5;
    z-index: 0;
}

.container-presentation .container::after {
    content: "";
    position: absolute;
    bottom: -50%;
    left: -50%;
    width: 100%;
    max-width: 800px;
    height: 100%;
    max-height: 800px;
    background: radial-gradient(circle, rgb(var(--primary-color)) 0%, transparent 60%);
    opacity: 0.5;
    z-index: 0;
}

.container-presentation .container-logo {
    width: 200px;
    margin: var(--margin-xxl);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.container-presentation .container-logo img {
    width: 100%;
    filter: brightness(10);
}

.container-presentation .container-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: end;
}

.container-presentation .container-content h1 {
    width: 70%;
    margin: var(--margin-xxl);
    font-size: 70px;
    font-style: italic;
    line-height: 1.2;
    font-weight: 300;
    font-family: var(--font-family);
    color: rgb(var(--background-color));
}

/* Degradé d'opacité de bas en haut sur le h1 */
.container-presentation .container-content h1 {
    position: relative;
    width: 70%;
    margin: var(--margin-xxl);
    margin-bottom: calc(var(--margin-xxl) * 2);
    font-size: 70px;
    font-style: italic;
    line-height: 1.2;
    font-weight: 300;
    color: rgb(var(--background-color));
    background: linear-gradient(to top,  rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 1) 100%);
    background-clip: border-box;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    z-index: 1;
}

.container-form {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.container-form form {
    width: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.container-form form h1 {
    margin-bottom: var(--margin-medium);
    color: rgb(var(--text-color));
    font-weight: bold;
    font-size: var(--font-size-large-h1);
    font-family: var(--font-family);
}

.container-form form label {
    margin-bottom: var(--margin-small);
    color: rgb(var(--text-color));
    font-size: var(--font-size);
    font-family: var(--font-family);
}

.container-form form .form-group {
    width: 100%;
    margin-bottom: var(--margin-small);
    display: flex;
    flex-direction: column;
}

.container-form form input {
    padding: var(--padding-small);
    margin-bottom: var(--margin-medium);
    border: 2px solid rgb(var(--border-color));
    border-radius: var(--border-radius);
    color: rgb(var(--text-color));
    font-size: var(--font-size);
    font-family: var(--font-family);
}

.container-form form a {
    text-decoration: none;
    color: rgb(var(--primary-color));
    font-size: var(--font-size);
    font-family: var(--font-family);

    &:hover {
        text-decoration: underline;
    }
}

.container-form .error {
    color: red;
    font-size: var(--font-size);
    font-family: var(--font-family);
}

.is-invalid {
    border-color: rgba(255, 0, 0, 0.2) !important;
    background-color: rgba(255, 0, 0, 0.2) !important;
}

.is-valid {
    border-color: rgba(0, 255, 0, 0.2) !important;
    background-color: rgba(0, 255, 0, 0.2) !important;
}