form {
    display: block;
    float: left;
    height: auto;
    margin: auto;
    width: 100%;
}

form div {
    display: block;
    float: left;
    position: relative;
    margin-top: 0.5em;
    width: 100%;
}

form div div {
    border-radius: 0 0 0 0.5em;
    background-color: var(--main-on-color);
    color: var(--main-bg-color);
    display: block;
    font-size: 1.0em;
    height: 2.0em;
    line-height: 2.0em;
    position: absolute;
    top: -0.5em;
    text-align: center;
    vertical-align: bottom;
    width: 2.0em;
    z-index: 300;
}

form label {
    color: var(--main-txt-color);
    position: absolute;
    font-size: 1.0em;
    height: 2.0em;
    line-height: 2.0em;
    cursor: text;
    left: calc(2.5em + 5px);
    padding: 0;
    top: 0;
    transition: all 0.5s ease;
    width: auto;
    text-align: left;
}

form input:focus + label,
form input:not(:placeholder-shown) + label {
    top: -0.5em;
    font-size: 0.8em;
    width: auto;
}

input[type=submit] {
    background-color: var(--main-on-color);
    border: none;
    border-radius: 0 0.4em;
    cursor: pointer;
    color: var(--main-bg-color);
    display: block;
    float: left;
    font-size: 1.0em;
    font-weight: bold;
    height: calc(2.0em + 2px);
    padding: 0 2.0em;
    outline: none;
    text-align: center;
    transition: all 0.3s ease;
    width: 100%;
}

input[type=submit]:hover,
input[type=submit]:focus {
    background-color: var(--main-io-color);
    color: var(--main-txt-color);
    box-shadow: 0 0 6px var(--main-io-color);
}

input[type=submit]:disabled {
    background-color: var(--main-bd-color);     /* Grauer Hintergrund */
    color: var(--main-txt-color);               /* Graue Schrift */
    cursor: not-allowed;                        /* Zeigt an, dass der Button nicht klickbar ist */
    opacity: 1.0;                               /* Leicht transparent für ausgegrauten Effekt */
}

input::placeholder {
    color: Transparent;
    opacity: 0;
}

input[type=text],
input[type=password],
textarea {
    background-color: var(--main-bgt-color);
    backdrop-filter: blur(120px) saturate(0);
    border: solid 1px var(--main-on-color);
    border-radius: 0 0.4em;
    display: block;
    float: left;
    font-family: var(--font-default);
    font-size: 1.0em;
    height: calc(2.0em - 2px);
    margin: 0;
    top: 0.5em;
    opacity: 1.0;
    outline: none;
    padding: 0;
    padding-left: 2.5em;
    padding-right: 2.5em;
    text-align: center;
    transition: all 0.3s ease;
    vertical-align: middle;
    width: calc(100% - 5.0em);
}

textarea {
    box-sizing: border-box;
    field-sizing: content;
    resize: vertical;
    overflow: hidden;
    padding-top: 12px;
    width: 100%;
}

input[type=text]:focus,
input[type=password]:focus {
    box-shadow: 0 0 6px var(--main-on-color);
}

input[type=text]:disabled,
input[type=password]:disabled {
    border: solid 1px var(--main-bd-color);
}

input[readonly] {
    background-color: var(--main-bgtro-color);
    backdrop-filter: blur(240px) saturate(0);
    cursor: not-allowed;
}

input[readonly]:focus {
    box-shadow: 0 0 6px var(--main-txt-color);
}