* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background: #f4f5f7;
    color: #1f2933;
}

header {
    background: #1f2933;
    color: white;
    padding: 16px 24px;
}

header h1 {
    margin: 0;
    font-size: 18px;
}

main {
    max-width: 640px;
    margin: 32px auto;
    padding: 0 16px;
}

.block {
    background: white;
    border: 1px solid #d9dde3;
    border-radius: 10px;
    padding: 24px;
}

.formular-zeile {
    margin-bottom: 16px;
}

.formular-zeile label {
    display: block;
    font-weight: 600;
    margin-bottom: 4px;
}

.formular-zeile input[type="text"],
.formular-zeile input[type="password"] {
    width: 100%;
    padding: 9px 10px;
    border: 1px solid #b0b8c1;
    border-radius: 6px;
    font-size: 14px;
}

.button-primär {
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 6px;
    padding: 10px 18px;
    cursor: pointer;
    font-size: 14px;
}

.fehlermeldung {
    color: #b42318;
    background: #fee4e2;
    border-radius: 6px;
    padding: 8px 12px;
}

.mono { font-family: "Cascadia Code", Consolas, monospace; }