*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --gruen: #55c951;
    --gruen-dunkel: #3da93a;
    --gruen-text: #2b8228;
    --gruen-hell: #eef8ed;
    --gruen-verlauf: linear-gradient(135deg, #6fd96b 0%, #3da93a 100%);
    --tief: #24572c;
    --tief-text: #d7ead8;
    --tinte: #1d2a1f;
    --grau-text: #5b675c;
    --linie: #d9e3d9;
    --papier: #f3f6f3;
    --weiss: #ffffff;
    --bernstein: #a8650f;
    --bernstein-hell: #fdf4e6;
    --radius: 13.5px;
    --radius-gross: 22px;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    color: var(--tinte);
    background: var(--papier);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

a { color: var(--gruen-text); }

:focus-visible {
    outline: 3px solid var(--gruen);
    outline-offset: 2px;
}

.anmeldung {
    display: grid;
    grid-template-columns: 5fr 7fr;
    width: min(960px, 100%);
    min-height: 600px;
    background: var(--weiss);
    border-radius: var(--radius-gross);
    overflow: hidden;
    box-shadow: 0 18px 50px rgba(29, 42, 31, 0.1);
}

/* Linke Seite: für wen die Seite ist, und der Weg für Schüler */

.seite {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 36px;
    padding: 36px 34px 40px;
    background: var(--tief);
    color: var(--weiss);
}

.seite__marke {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--weiss);
    font-size: 17px;
    font-weight: bold;
    text-decoration: none;
}

.seite__marke img {
    padding: 4px;
    background: var(--weiss);
    border-radius: 9px;
    box-sizing: content-box;
    width: 26px;
    height: 26px;
}

.seite__titel {
    font-size: 32px;
    line-height: 1.15;
    letter-spacing: -0.5px;
    margin-bottom: 12px;
}

.seite__beschreibung {
    color: var(--tief-text);
    max-width: 30ch;
}

/* Kleine Zugangskarte im Stil des Schüler-Logins */

.schuelerkarte {
    display: block;
    max-width: 290px;
    background: var(--weiss);
    color: var(--tinte);
    border-radius: 18px;
    overflow: hidden;
    text-decoration: none;
    transform: rotate(-2.5deg);
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.25);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.schuelerkarte:hover,
.schuelerkarte:focus-visible {
    transform: rotate(0deg) translateY(-3px);
    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.3);
}

.schuelerkarte:focus-visible { outline-color: var(--weiss); }

.schuelerkarte__kopf {
    position: relative;
    display: block;
    padding: 24px 18px 16px;
    background: var(--gruen-verlauf);
    color: var(--weiss);
    font-size: 17px;
    font-weight: bold;
}

.schuelerkarte__kopf::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 10px;
    background: radial-gradient(circle at 5px 10px, var(--weiss) 4px, transparent 4.5px) 0 0 / 15px 10px repeat-x;
}

.schuelerkarte__loch {
    position: absolute;
    top: 9px;
    left: 50%;
    width: 30px;
    height: 7px;
    margin-left: -15px;
    border-radius: 999px;
    background: var(--tief);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3);
}

.schuelerkarte__koerper {
    display: block;
    padding: 14px 18px 18px;
}

.schuelerkarte__frage {
    display: block;
    font-weight: bold;
    margin-bottom: 4px;
}

.schuelerkarte__aktion {
    display: block;
    color: var(--gruen-text);
    font-size: 15px;
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* Rechte Seite: Formulare */

.formular {
    padding: 40px 44px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.reiter {
    display: flex;
    gap: 4px;
    padding: 4px;
    margin-bottom: 30px;
    background: var(--papier);
    border-radius: var(--radius);
}

.reiter__knopf {
    flex: 1;
    padding: 10px 12px;
    border: none;
    border-radius: calc(var(--radius) - 3px);
    background: transparent;
    color: var(--grau-text);
    font: inherit;
    font-size: 15px;
    cursor: pointer;
}

.reiter__knopf[aria-selected="true"] {
    background: var(--weiss);
    color: var(--tinte);
    font-weight: bold;
    box-shadow: 0 1px 6px rgba(29, 42, 31, 0.1);
}

.formular__teil[hidden] { display: none; }

.formular__titel {
    font-size: 24px;
    letter-spacing: -0.3px;
    margin-bottom: 4px;
}

.formular__hinweis {
    color: var(--grau-text);
    margin-bottom: 24px;
}

.formular__klein {
    margin-top: 14px;
    font-size: 13px;
    color: var(--grau-text);
    text-align: center;
}

.feld { margin-bottom: 16px; }

.feld label {
    display: block;
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 6px;
}

.feld__zeile {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.feld__link { font-size: 13px; }

.feld input {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--linie);
    border-radius: var(--radius);
    background: var(--weiss);
    color: var(--tinte);
    font: inherit;
    font-size: 15px;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.feld input::placeholder { color: #a3aea4; }

.feld input:focus {
    outline: none;
    border-color: var(--gruen);
    box-shadow: 0 0 0 4px rgba(85, 201, 81, 0.18);
}

.feld-paar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.passwort { position: relative; }

.passwort input { padding-right: 92px; }

.passwort__zeigen {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    padding: 6px 10px;
    border: none;
    border-radius: 9px;
    background: transparent;
    color: var(--gruen-text);
    font: inherit;
    font-size: 13px;
    font-weight: bold;
    cursor: pointer;
}

.passwort__zeigen:hover { background: var(--gruen-hell); }

.staerke {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
    font-size: 12.5px;
    color: var(--grau-text);
}

.staerke__balken {
    position: relative;
    flex: 1;
    height: 4px;
    border-radius: 99px;
    background: var(--linie);
    overflow: hidden;
}

.staerke__balken::after {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: 0;
    background: var(--gruen);
    transition: width 0.2s, background 0.2s;
}

.staerke[data-staerke="1"] .staerke__balken::after { width: 25%; background: #d64545; }
.staerke[data-staerke="2"] .staerke__balken::after { width: 50%; background: #e0912b; }
.staerke[data-staerke="3"] .staerke__balken::after { width: 75%; background: var(--gruen); }
.staerke[data-staerke="4"] .staerke__balken::after { width: 100%; background: var(--gruen-dunkel); }

.avv {
    margin: 4px 0 20px;
    padding: 12px 14px;
    background: var(--gruen-hell);
    border-radius: var(--radius);
    font-size: 14px;
}

.avv--hervorgehoben {
    background: var(--bernstein-hell);
    border-left: 4px solid var(--bernstein);
}

.avv__hinweis {
    margin-bottom: 8px;
    color: var(--tinte);
}

.avv__auswahl {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
}

.avv__auswahl input {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    margin-top: 1px;
    accent-color: var(--gruen-dunkel);
}

.knopf {
    width: 100%;
    padding: 13px;
    border: none;
    border-radius: var(--radius);
    background: var(--gruen);
    color: var(--weiss);
    font: inherit;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.15s;
}

.knopf:hover { background: var(--gruen-dunkel); }

@media (max-width: 760px) {
    body {
        display: block;
        padding: 0;
        background: var(--weiss);
    }

    .anmeldung {
        grid-template-columns: 1fr;
        min-height: 100vh;
        border-radius: 0;
        box-shadow: none;
    }

    .seite {
        gap: 18px;
        padding: 22px 20px 26px;
    }

    .seite__titel { font-size: 24px; margin-bottom: 0; }

    .seite__beschreibung { display: none; }

    .schuelerkarte {
        max-width: none;
        transform: none;
    }

    .schuelerkarte:hover,
    .schuelerkarte:focus-visible { transform: none; }

    .formular { padding: 28px 20px 36px; }

    .feld-paar {
        grid-template-columns: 1fr;
        gap: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .schuelerkarte,
    .staerke__balken::after { transition: none; }
}