/* BASE STYLES: NORDISCHER LOOK (Tiefes Meer & Eisblau) */
        :root {
            --color-dark-bg: #2C3E50; 
            --color-content-bg: #34495E; 
            --color-text-light: #ECF0F1; 
            --color-accent-blue: #3498DB; 
            --color-secondary-grey: #5D6D7E; 
            --color-admin: #E74C3C; 
        }
        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--color-dark-bg);
            color: var(--color-text-light);
            line-height: 1.7;
        }
        .container {
            max-width: 1000px;
            margin: 0 auto;
            padding: 20px;
            background-color: var(--color-content-bg);
            box-shadow: 0 0 15px rgba(0, 0, 0, 0.4);
            border-radius: 10px;
        }
        h1, h2 {
            color: var(--color-accent-blue);
            border-bottom: 2px solid var(--color-accent-blue);
            padding-bottom: 8px;
            margin-top: 35px;
            text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
        }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.0rem; }
        hr { border-top: 1px solid rgba(52, 152, 219, 0.3); margin: 50px 0; }
        
        /* TERMIN-HIGHLIGHT */
        .highlight-date {
            font-size: 2.5rem; 
            font-weight: 900;
            color: var(--color-text-light);
            padding: 1.5rem;
            background-color: var(--color-content-bg);
            border-radius: 10px;
            text-align: center; 
            text-shadow: 0 0 10px #A8DADC, 0 0 20px #A8DADC; 
            border: 4px solid var(--color-accent-blue); 
            margin: 20px auto 30px auto; 
            display: block; 
        }

        /* NAVIGATION STYLING */
        nav {
            background-color: #243447; 
            border-radius: 8px 8px 0 0;
            padding: 10px 20px;
            margin-bottom: 20px;
        }
        nav a, nav span { /* nav span für den Anzeigenamen */
            color: var(--color-text-light);
            padding: 8px 15px;
            text-decoration: none;
            font-weight: 600;
            transition: color 0.2s, background-color 0.2s;
            border-radius: 5px;
            white-space: nowrap; 
        }
        nav a:hover {
            color: var(--color-accent-blue);
            background-color: #3B5066;
        }
        /* Style für den Logout Button */
        #navAdminLogout:hover {
            background-color: #C0392B;
        }


        /* BUTTONS */
        .btn {
            background-color: var(--color-accent-blue);
            color: white !important;
            padding: 18px 35px;
            text-decoration: none;
            font-weight: bold;
            border-radius: 5px;
            margin: 15px;
            display: inline-block;
            transition: background-color 0.3s, transform 0.1s;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
            white-space: nowrap; 
        }
        .btn-secondary {
            background-color: var(--color-secondary-grey);
            padding: 10px 20px; 
            font-size: 0.9rem;
        }
        .btn-lang {
            padding: 6px 15px;
            font-size: 0.8rem;
            background-color: #5D6D7E;
            min-width: 100px; 
            text-align: center;
            border-radius: 3px;
        }
        .btn-lang:hover {
            background-color: #7289DA;
        }
        .btn:hover {
            background-color: #2980B9;
            transform: translateY(-1px);
            box-shadow: 0 6px 8px rgba(0, 0, 0, 0.3);
        }
        .btn-admin-approve {
            background-color: #2ECC71; 
            padding: 8px 15px;
        }
        .btn-admin-reject {
            background-color: #E74C3C; 
            padding: 8px 15px;
        }
        .btn-admin-delete { /* NEU: Lösch-Button */
            background-color: #95A5A6; 
            padding: 8px 15px;
        }

        /* FORM STYLING */
        .form-input {
            width: 100%;
            padding: 12px;
            margin-bottom: 1rem;
            border: 1px solid var(--color-accent-blue);
            background-color: #496078;
            color: var(--color-text-light);
            border-radius: 5px;
        }

        /* KARTE / IFRAME RESPONSIVENESS */
        .iframe-wrapper {
            position: relative;
            height: 0;
            padding-bottom: 75%; 
            overflow: hidden;
            margin-top: 20px;
            border: 1px solid var(--color-accent-blue);
            border-radius: 8px;
        }
        .iframe-wrapper iframe {
            position: absolute;
            top: 0;
            left: 0;
            width: 100% !important; 
            height: 100% !important;
        }
        
        /* Admin Section Styling */
        #admin-view {
            border: 2px solid var(--color-admin);
            border-radius: 10px;
            background-color: #222e3b;
            padding: 20px;
        }
        .admin-entry {
            background-color: #34495E;
            border-radius: 5px;
            padding: 15px;
            margin-bottom: 10px;
            border-left: 5px solid var(--color-admin);
        }

        /* Responsive Footer Grid */
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }