body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; margin: 0; }
.nav { display: flex; gap: 1rem; padding: 1rem; border-bottom: 1px solid #ddd; align-items: center; }
.nav a { text-decoration: none; color: #007bff; padding-bottom: 2px; }
.nav a:hover { color: #0056b3; }
.nav-active { font-weight: 600; color: #333 !important; border-bottom: 2px solid #007bff; }
.nav-auth { margin-left: auto; display: flex; gap: 1rem; align-items: center; }
.nav-auth span { color: #666; }
.container { padding: 1.5rem; }
.footer { padding: 1rem; border-top: 1px solid #ddd; margin-top: 2rem; }

/* Auth Forms */
.auth-container { max-width: 400px; margin: 2rem auto; padding: 2rem; border: 1px solid #ddd; border-radius: 8px; }
.auth-container h1 { margin-top: 0; text-align: center; color: #333; }
.auth-form { display: flex; flex-direction: column; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 0.3rem; }
.form-group label { font-weight: 600; color: #333; }
.form-group input { padding: 0.75rem; border: 1px solid #ccc; border-radius: 4px; font-size: 1rem; }
.form-group input:focus { outline: none; border-color: #007bff; box-shadow: 0 0 0 2px rgba(0,123,255,0.25); }
.form-group .help-text { font-size: 0.8rem; color: #666; }
.form-group .error { color: #dc3545; font-size: 0.85rem; }
.btn { padding: 0.75rem 1.5rem; border: none; border-radius: 4px; cursor: pointer; font-size: 1rem; text-decoration: none; display: inline-block; text-align: center; }
.btn-primary { background-color: #007bff; color: white; }
.btn-primary:hover { background-color: #0056b3; }
.btn-secondary { background-color: #6c757d; color: white; }
.btn-secondary:hover { background-color: #545b62; }
.auth-link { text-align: center; margin-top: 1rem; }
.auth-link a { color: #007bff; }

/* Logout-Button als Link */
.nav-logout-btn { background: none; border: none; color: #007bff; cursor: pointer; font: inherit; padding: 0; text-decoration: underline; }
.nav-logout-btn:hover { color: #0056b3; }

/* Account */
.account-readonly { margin: 0; color: #555; padding: 0.5rem 0; }
.account-divider { border: none; border-top: 1px solid #ddd; margin: 1.5rem 0; }
.account-meta { margin-bottom: 1rem; }

/* Home Cards */
.card-grid { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 30px; }
.card { flex: 1; min-width: 300px; padding: 20px; border-radius: 10px; }
.card-green { border: 2px solid #2ecc71; background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%); }
.card-purple { border: 2px solid #667eea; background: linear-gradient(135deg, #e8eaf6 0%, #c5cae9 100%); }
.card-title-green { color: #27ae60; }
.card-title-purple { color: #5e35b1; }
.card-text { color: #555; }
.card-btn { display: inline-block; margin-top: 10px; padding: 10px 20px; color: white; text-decoration: none; border-radius: 5px; font-weight: bold; }
.card-btn-green { background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%); }
.card-btn-green:hover { background: linear-gradient(135deg, #27ae60 0%, #1e8449 100%); }
.card-btn-purple { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.card-btn-purple:hover { background: linear-gradient(135deg, #5a6fd6 0%, #6a4190 100%); }

/* Hint Box */
.hint-box { margin-top: 40px; padding: 20px; background: #fff3cd; border-left: 4px solid #ffc107; border-radius: 5px; }
.hint-box h3 { color: #856404; margin-top: 0; }
.hint-box p, .hint-box ol { color: #856404; }
.hint-box p:last-child { margin-bottom: 0; }

/* Alerts */
.alert { padding: 0.75rem 1rem; border-radius: 4px; margin-bottom: 1rem; }
.alert-success { background-color: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.alert-error { background-color: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
.alert-info { background-color: #d1ecf1; color: #0c5460; border: 1px solid #bee5eb; }