/* Farben der Europa-Universität Viadrina (Hausfarben laut Websuche, nicht offiziell verifiziert) */
:root {
    --viadrina-blau: #14387F;
    --viadrina-blau-dunkel: #0E2859;
    --viadrina-gelb: #F7DB9C;
    --text: #1d1d1d;
    --grau-hell: #f4f5f8;
    --grau-linie: #d5d9e2;
    --fehler: #b00020;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    color: var(--text);
    background: var(--grau-hell);
    line-height: 1.5;
}

header {
    background: var(--viadrina-blau);
    border-bottom: 6px solid var(--viadrina-gelb);
    color: #fff;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

header a { color: #fff; text-decoration: none; font-weight: 700; font-size: 1.2rem; }

header nav { font-size: 0.95rem; }
header nav a { font-size: inherit; font-weight: 400; text-decoration: underline; }

header button {
    background: none;
    border: 1px solid #fff;
    color: #fff;
    border-radius: 4px;
    padding: 0.2rem 0.6rem;
    cursor: pointer;
}
header button:hover { background: #fff; color: var(--viadrina-blau); }

.lang-switch { display: flex; gap: 0.3rem; margin: 0; }
.lang-switch button { font-size: 0.8rem; padding: 0.15rem 0.5rem; }
.lang-switch button.active { background: #fff; color: var(--viadrina-blau); }

main {
    max-width: 900px;
    margin: 0;
    padding: 2rem;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.layout {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 1.5rem;
    max-width: 1220px;
    margin: 2rem auto;
    padding: 0 1rem;
}
.layout main { flex: 0 1 900px; min-width: 0; }

.stammdaten {
    flex: 0 0 260px;
    background: #fff;
    border-radius: 8px;
    border-top: 4px solid var(--viadrina-gelb);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    padding: 1rem 1.2rem;
    font-size: 0.92rem;
}
.stammdaten h2 { margin: 0 0 0.6rem; font-size: 1.05rem; }
.stammdaten dt { font-weight: 600; color: var(--viadrina-blau-dunkel); margin-top: 0.5rem; }
.stammdaten dd { margin: 0 0 0.2rem; word-break: break-word; }
.stammdaten a { display: inline-block; margin-top: 0.8rem; }

@media (max-width: 1000px) {
    .layout { flex-direction: column; align-items: stretch; }
    .layout main { flex: none; width: 100%; }
    .stammdaten { flex: none; }
}

h1, h2 { color: var(--viadrina-blau); }
h1 { margin-top: 0; border-bottom: 3px solid var(--viadrina-gelb); padding-bottom: 0.4rem; }

a { color: var(--viadrina-blau); }
a:hover { color: var(--viadrina-blau-dunkel); }

table { border-collapse: collapse; width: 100%; margin-top: 1rem; }
th, td { text-align: left; padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--grau-linie); }
thead th {
    background: var(--viadrina-blau);
    color: #fff;
    font-weight: 600;
}
tbody tr:nth-child(even) { background: var(--grau-hell); }

/* Formulare */
form { max-width: 640px; }
form p { margin: 0 0 1.1rem; }
form label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.3rem;
    color: var(--viadrina-blau-dunkel);
}
form input[type="text"],
form input[type="email"],
form input[type="password"],
form input[type="date"],
form input[type="number"],
form textarea,
form select {
    width: 100%;
    padding: 0.55rem 0.7rem;
    font: inherit;
    border: 1px solid var(--grau-linie);
    border-radius: 6px;
    background: #fff;
}
form textarea { min-height: 6rem; resize: vertical; }
form input:focus,
form textarea:focus,
form select:focus {
    outline: none;
    border-color: var(--viadrina-blau);
    box-shadow: 0 0 0 3px rgba(20, 56, 127, 0.2);
}
form input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
    margin-right: 0.5rem;
    vertical-align: middle;
    accent-color: var(--viadrina-blau);
}
form p:has(input[type="checkbox"]) label { display: inline; font-weight: 400; }

.helptext { display: block; font-size: 0.85rem; color: #666; margin-top: 0.25rem; }
.errorlist {
    list-style: none;
    padding: 0.4rem 0.6rem;
    margin: 0 0 0.4rem;
    background: #fdecee;
    color: var(--fehler);
    border-left: 4px solid var(--fehler);
    border-radius: 4px;
    font-size: 0.9rem;
}

button, input[type="submit"] {
    background: var(--viadrina-blau);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 0.6rem 1.2rem;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}
button:hover, input[type="submit"]:hover { background: var(--viadrina-blau-dunkel); }

form button[type="submit"] { margin-top: 0.5rem; }

/* Löschen-Button bewusst rot */
form[action*="loeschen"] button { background: var(--fehler); }
form[action*="loeschen"] button:hover { background: #7a0016; }

.info-box {
    background: #f4f7fc;
    border-left: 4px solid var(--viadrina-blau, #14387F);
    padding: 0.75rem 1rem;
    margin-bottom: 1.25rem;
}

.info-box p {
    margin: 0.25rem 0;
}