:root {
    --bg: #ffffff;
    --text: #212529;
    --primary: #003366;
    --secondary: #0066cc;
    --danger: #dc3545;
    --success: #28a745;
    --light: #f8f9fa;
    --border: #dee2e6;
    --card: #fafafa;
    --link: #0066cc;
    --focus: #0056b3;
}
* { box-sizing: border-box; }
body {
    font-family: Arial, Helvetica, sans-serif;
    color: var(--text);
    background: var(--bg);
    margin: 0;
    line-height: 1.5;
}
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.skip-link {
    position: absolute; top: -40px; left: 0;
    background: var(--primary); color: #fff; padding: 8px 16px; z-index: 100;
    text-decoration: none;
}
.skip-link:focus { top: 0; }

a { color: var(--link); }

/* App-Leiste */
.app-bar {
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px; padding: 12px 20px;
    background: var(--primary); color: #fff;
}
.app-title { font-weight: bold; font-size: 1.1rem; }
.app-nav { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.app-nav a { color: #fff; }
.app-user { opacity: 0.9; font-size: 0.9rem; }

.container { max-width: 1100px; margin: 0 auto; padding: 24px 20px 60px; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

h1 { font-size: 1.6rem; }
h2 { font-size: 1.25rem; margin-top: 32px; }

.muted { color: #666; }

/* Buttons */
.btn {
    display: inline-block; padding: 9px 16px; border: 1px solid var(--border);
    background: var(--light); color: var(--text); border-radius: 4px;
    cursor: pointer; font-size: 0.95rem; text-decoration: none; line-height: 1.2;
}
.btn:hover { background: var(--secondary); color: #fff; }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--secondary); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover { background: #b02a37; }
.btn-small { padding: 5px 10px; font-size: 0.85rem; }

/* Login */
.auth-page { display: flex; min-height: 100vh; align-items: center; justify-content: center; background: var(--light); }
.auth-card {
    background: #fff; border: 1px solid var(--border); border-radius: 8px;
    padding: 32px; width: 100%; max-width: 380px; box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.auth-card h1 { margin: 0 0 4px; font-size: 1.4rem; }
.auth-sub { margin: 0 0 20px; color: #666; }

.field { margin-bottom: 16px; }
.field label { display: block; font-weight: bold; margin-bottom: 5px; }
.field input, .field select {
    width: 100%; padding: 9px 10px; border: 1px solid var(--border);
    border-radius: 4px; font-size: 1rem; background: #fff; color: var(--text);
}
.checkbox-label { font-weight: normal; display: flex; align-items: center; gap: 8px; }
.checkbox-label input { width: auto; }

.alert { padding: 10px 14px; border-radius: 4px; margin-bottom: 16px; }
.alert-error { background: #f8d7da; color: #721c24; border: 1px solid #f5c2c7; }
.alert-success { background: #d4edda; color: #155724; border: 1px solid #badbcc; }

/* Test-Kacheln */
.test-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; margin-top: 12px; }
.test-card {
    border: 1px solid var(--border); border-radius: 8px; padding: 16px;
    background: var(--card); display: flex; flex-direction: column; gap: 10px;
}
.test-card h3 { margin: 0; font-size: 1.05rem; }
.test-card .meta { font-size: 0.82rem; color: #666; }
.test-card .badge {
    display: inline-block; font-size: 0.72rem; padding: 2px 8px; border-radius: 10px;
    background: #e7f0fb; color: #084298; margin-left: 6px;
}
.test-card .card-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }

/* Tabellen */
.data-table { width: 100%; border-collapse: collapse; margin-top: 16px; }
.data-table th, .data-table td { border: 1px solid var(--border); padding: 9px 10px; text-align: left; }
.data-table th { background: var(--primary); color: #fff; }
.data-table tr:nth-child(even) td { background: var(--light); }

/* Dialoge */
dialog {
    border: 1px solid var(--border); border-radius: 8px; padding: 24px;
    max-width: 480px; width: 92%; color: var(--text);
}
dialog::backdrop { background: rgba(0,0,0,0.45); }
dialog h2 { margin-top: 0; }
.dialog-buttons { display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px; }
.share-list { list-style: none; padding: 0; }
.share-list li { display: flex; justify-content: space-between; align-items: center; padding: 6px 0; border-bottom: 1px solid var(--border); }