* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #1976d2;
            --primary-dark: #1565c0;
            --secondary-color: #388e3c;
            --accent-color: #ff9800;
            --surface: #ffffff;
            --surface-variant: #f5f5f5;
            --on-surface: #212121;
            --on-surface-variant: #757575;
            --shadow: rgba(0, 0, 0, 0.12);
            --container-bg: linear-gradient(145deg, #ffffff 0%, #f8fafc 30%, #f1f5f9 70%, #e2e8f0 100%);
            --container-shadow: 0 25px 50px -12px rgba(25, 118, 210, 0.25), 0 0 0 1px rgba(25, 118, 210, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.1);
        }
        [data-theme="dark"] {
            --primary-color: #64b5f6;
            --primary-dark: #42a5f5;
            --secondary-color: #81c784;
            --accent-color: #ffb74d;
            --surface: #1e1e1e;
            --surface-variant: #2d2d2d;
            --on-surface: #ffffff;
            --on-surface-variant: #b0b0b0;
            --shadow: rgba(0, 0, 0, 0.3);
            --container-bg: linear-gradient(145deg, #1e1e1e 0%, #2d2d2d 30%, #3d3d3d 70%, #4d4d4d 100%);
            --container-shadow: 0 25px 50px -12px rgba(100, 181, 246, 0.15), 0 0 0 1px rgba(100, 181, 246, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.05);
        }
        body {
            font-family: 'Roboto', sans-serif;
            line-height: 1.6;
            color: var(--on-surface);
            background-color: var(--surface-variant);
            background-image: url('https://www.duisburg-laar.de/assets/img/background.jpg');
            background-attachment: fixed;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(245, 245, 245, 0.5);
            z-index: -1;
            pointer-events: none;
        }
        .container {
            display: grid;
            grid-template-columns: 280px 1fr;
            grid-template-rows: auto 1fr auto;
            min-height: calc(100vh - 48px);
            max-width: 1440px;
            margin: 24px auto;
            gap: 24px;
            padding: 32px;
            background: var(--container-bg);
            border-radius: 24px;
            box-shadow: var(--container-shadow);
        }
        /* Header */
        header {
            grid-column: 1 / -1;
            background: var(--surface);
            border-radius: 16px;
            box-shadow: 0 2px 8px var(--shadow);
            padding: 16px 24px;
            margin-top: 0;
            position: sticky;
            top: 24px;
            z-index: 100;
        }
        .header-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 24px;
            font-weight: 500;
            color: var(--primary-color);
        }
        .logo .material-icons {
            font-size: 32px;
        }
        .search-bar {
            flex: 1;
            max-width: 600px;
            position: relative;
        }
        .search-input {
            width: 100%;
            padding: 12px 16px 12px 48px;
            border: 2px solid transparent;
            border-radius: 24px;
            background: var(--surface-variant);
            font-size: 16px;
            transition: all 0.2s ease;
        }
        .search-input:focus {
            outline: none;
            border-color: var(--primary-color);
            background: var(--surface);
        }
        .search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--on-surface-variant);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .theme-toggle {
            width: 48px;
            height: 48px;
            border: none;
            background: none;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background-color 0.2s ease;
            color: var(--on-surface-variant);
        }
        .theme-toggle:hover {
            background-color: var(--surface-variant);
        }
        .btn-icon {
            width: 48px;
            height: 48px;
            border: none;
            background: none;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background-color 0.2s ease;
        }
        .btn-icon:hover {
            background-color: var(--surface-variant);
        }
        /* Sidebar Navigation */
        .sidebar {
            background: var(--surface);
            border-radius: 16px;
            padding: 24px 0;
            box-shadow: 0 2px 8px var(--shadow);
            height: fit-content;
            top: 120px;
        }
        /* Spacing between navigation and info widget */
        .info-widget {
            margin-top: 24px;
        }
        .nav-section {
            margin-bottom: 32px;
        }
        .nav-title {
            padding: 0 24px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--on-surface-variant);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .nav-item {
            display: flex;
            align-items: center;
            padding: 12px 24px;
            color: var(--on-surface);
            text-decoration: none;
            transition: all 0.2s ease;
            cursor: pointer;
        }
        .nav-item:hover {
            background-color: var(--surface-variant);
        }
        .nav-item.active {
            background-color: var(--primary-color);
            color: var(--surface);
        }
        .nav-item .material-icons {
            margin-right: 16px;
            font-size: 20px;
        }
        /* Widget Styles */
        .widget {
            background: var(--surface);
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 2px 8px var(--shadow);
        }
        .widget-title {
            display: flex;
            align-items: center;
            margin-bottom: 16px;
            font-size: 18px;
            font-weight: 500;
        }
        .widget-title .material-icons {
            margin-right: 12px;
            color: var(--primary-color);
        }
        /* Main Content Area */
        main {
            background: var(--surface);
            border-radius: 16px;
            box-shadow: 0 2px 8px var(--shadow);
            overflow: hidden;
        }
        .hero {
            position: relative;
            height: 200px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--surface);
            text-align: center;
        }
        .hero-content h1 {
            font-size: 36px;
            font-weight: 300;
            margin-bottom: 8px;
        }
        .hero-content p {
            font-size: 16px;
            opacity: 0.9;
        }
        .content-area {
            padding: 48px;
            max-width: none;
        }
        .content-area h2 {
            font-size: 32px;
            font-weight: 300;
            margin-bottom: 24px;
            color: var(--primary-color);
            border-bottom: 2px solid var(--surface-variant);
            padding-bottom: 16px;
        }
        .content-area h3 {
            font-size: 24px;
            font-weight: 400;
            margin: 32px 0 16px 0;
            color: var(--primary-color);
        }
        .content-area h4 {
            font-size: 20px;
            font-weight: 500;
            margin: 24px 0 12px 0;
            color: var(--on-surface);
        }
        .content-area p {
            margin-bottom: 16px;
            line-height: 1.7;
            color: var(--on-surface);
        }
        .content-area ul, .content-area ol {
            margin-bottom: 16px;
            padding-left: 32px;
        }
        .content-area li {
            margin-bottom: 8px;
            line-height: 1.6;
        }
        .content-area table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            background: var(--surface);
        }
        .content-area th, .content-area td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid var(--surface-variant);
        }
        .content-area th {
            background: var(--surface-variant);
            font-weight: 500;
            color: var(--primary-color);
        }
        .content-area .highlight-box {
            background: var(--surface-variant);
            border-left: 4px solid var(--primary-color);
            padding: 20px;
            margin: 24px 0;
            border-radius: 0 8px 8px 0;
        }
        .content-area .highlight-box h4 {
            margin-top: 0;
            color: var(--primary-color);
        }
        .content-area .contact-info {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
            margin: 32px 0;
        }
        .content-area .contact-card {
            background: var(--surface-variant);
            padding: 24px;
            border-radius: 12px;
        }
        .content-area .contact-card h4 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .content-area .contact-card .material-icons {
            color: var(--primary-color);
        }
        /* Footer */
        footer {
            grid-column: 1 / -1;
            background: var(--surface);
            border-radius: 16px;
            box-shadow: 0 2px 8px var(--shadow);
            padding: 32px;
            margin-bottom: 0;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 32px;
        }
        .footer-section h4 {
            margin-bottom: 16px;
            color: var(--primary-color);
        }
        .footer-section ul {
            list-style: none;
        }
        .footer-section li {
            margin-bottom: 8px;
        }
        .footer-section a {
            color: var(--on-surface-variant);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        .footer-section a:hover {
            color: var(--primary-color);
        }
        @media (max-width: 1200px) {
            .container {
                grid-template-columns: 1fr;
                grid-template-rows: auto auto 1fr auto;
            }
            .sidebar {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
                gap: 16px;
            }
            .header-content {
                flex-wrap: wrap;
            }
            .search-bar {
                order: 3;
                flex-basis: 100%;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .content-area {
                padding: 32px 24px;
            }
            .content-area .contact-info {
                grid-template-columns: 1fr;
            }
        }

.news-item {
            display: block;
            background: var(--surface);
            border-radius: 12px;
            margin-bottom: 16px;
            box-shadow: 0 2px 8px var(--shadow);
            cursor: pointer;
            transition: all 0.2s ease;
            overflow: hidden;
        }
        .news-item:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 16px var(--shadow);
        }
        .news-header {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 16px;
        }
        .news-image {
            width: 80px;
            height: 80px;
            border-radius: 8px;
            background: var(--surface-variant);
            object-fit: cover;
            flex-shrink: 0;
        }
        .news-content {
            flex: 1;
        }
        .news-content h4 {
            margin-bottom: 8px;
            font-size: 18px;
            font-weight: 500;
            line-height: 1.3;
        }
        .news-content p {
            color: var(--on-surface-variant);
            line-height: 1.4;
            margin-bottom: 0;
        }
        .news-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 16px;
            background: var(--surface-variant);
            border-top: 1px solid rgba(0, 0, 0, 0.06);
            font-size: 14px;
        }
        [data-theme="dark"] .news-footer {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            color: var(--on-surface-variant);
        }
        .news-author {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .news-date-footer {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .news-readmore {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 4px;
            transition: opacity 0.2s ease;
        }
        .news-readmore:hover {
            opacity: 0.8;
        }
.login-card {
    background: var(--surface);
    max-width: 420px;
    margin: 80px auto;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 4px 16px var(--shadow);
    text-align: center;
}
.login-card h2 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 24px;
}
.input-field {
    display: flex;
    align-items: center;
    background: var(--surface-variant);
    border-radius: 12px;
    padding: 10px 16px;
    margin-bottom: 16px;
    position: relative;
}
.input-field input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 16px;
    padding-left: 8px;
    color: var(--on-surface);
}
.input-field input:focus {
    outline: none;
}
.input-field .material-icons {
    color: var(--on-surface-variant);
}
.toggle-password {
    position: absolute;
    right: 12px;
    cursor: pointer;
    color: var(--on-surface-variant);
}
.login-btn {
    width: 100%;
    padding: 12px 16px;
    border: none;
    background: var(--primary-color);
    color: var(--surface);
    font-size: 16px;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background-color 0.2s ease;
}
.login-btn:hover {
    background: var(--primary-dark);
}
.error-box {
    background: #ffebee;
    color: #b71c1c;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 16px;
}
/* --- Account-Icon-Link im Header --- */
.header-actions a.btn-icon {
    text-decoration: none;        /* entfernt Unterstreichung */
    color: inherit;               /* übernimmt Text/Icon-Farbe aus Umgebung */
    display: flex;                /* für zentrierte Icons */
    align-items: center;
    justify-content: center;
}

.header-actions a.btn-icon:hover {
    background-color: var(--surface-variant); /* gleicher Hover wie Buttons */
    border-radius: 50%;
}