body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f0f4f8;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.back-button {
    position: fixed;
    top: 20px;
    left: 20px;
    background-color: #6c757d;
    color: white !important;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 14px;
    font-weight: bold;
    z-index: 9999;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.container {
    background-color: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    width: 90%;
    max-width: 600px;
    text-align: center;
}

h1 { color: #0056b3; margin-bottom: 10px; }
p { color: #666; margin-bottom: 30px; }

.input-box { background-color: #f8f9fa; border: 1px solid #e0e0e0; text-align: left; padding: 20px; border-radius: 10px; }
.output-box { background-color: #f1f7fd; border: 1px dashed #007bff; margin-top: 25px; text-align: left; padding: 20px; border-radius: 10px; }

label { font-weight: bold; display: block; margin-bottom: 5px; color: #444; }
input { width: 100%; padding: 12px; border: 2px solid #e0e0e0; border-radius: 8px; box-sizing: border-box; font-size: 1rem; }

.action-btn { width: 100%; padding: 15px; border-radius: 8px; border: none; font-weight: bold; cursor: pointer; margin-top: 20px; transition: 0.3s; }
.primary { background-color: #28a745; color: white; font-size: 1.1rem; }
.primary:hover { background-color: #218838; }

/* Tabelle für Ergebnisse */
.result-table { width: 100%; border-collapse: collapse; margin-top: 10px; }
.result-table td { padding: 8px 0; border-bottom: 1px solid #dce9f5; color: #333; }
.result-table td:first-child { font-weight: bold; color: #555; width: 45%; }