:root {
            --primary: #4a90e2;
            --secondary: #2d3748;
            --accent: #e74c3c;
            --success: #10b981;
            --warning: #f59e0b;
            --lightBg: #f8fafc;
            --cardBg: #ffffff;
            --borderColor: #e2e8f0;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadowHover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--lightBg);
            color: var(--secondary);
            line-height: 1.6;
            padding-bottom: 3rem;
        }

        /* Navbar */
        .navbar {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            box-shadow: var(--shadow);
            padding: 1rem 0;
        }

        .navbar-brand {
            font-weight: 700;
            color: white !important;
            font-size: 1.5rem;
        }

        .navbar-brand span {
            font-weight: 300;
        }

        /* Header Section */
        .header-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 3rem 0;
            margin-bottom: 2rem;
        }

        .header-section h1 {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
        }

        .header-section p {
            font-size: 1.1rem;
            opacity: 0.9;
        }

        .property-count {
            background: rgba(255, 255, 255, 0.2);
            padding: 0.5rem 1.5rem;
            border-radius: 25px;
            font-weight: 600;
            display: inline-block;
            margin-top: 1rem;
        }

        /* Stats Cards */
        .stats-section {
            margin-bottom: 3rem;
        }

        .stat-card {
            background: var(--cardBg);
            border-radius: 12px;
            padding: 1.5rem;
            box-shadow: var(--shadow);
            text-align: center;
            border: 1px solid var(--borderColor);
        }

        .stat-card h3 {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 0.5rem;
        }

        .stat-card p {
            color: #64748b;
            font-size: 0.9rem;
            margin: 0;
        }

        /* Property Grid */
        .property-grid {
            display: grid;
            gap: 2rem;
            margin-bottom: 3rem;
        }

        /* Responsive Grid */
        @media (min-width: 1400px) {
            .property-grid {
                grid-template-columns: repeat(5, 1fr);
            }
        }

        @media (min-width: 1200px) and (max-width: 1399px) {
            .property-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        @media (min-width: 992px) and (max-width: 1199px) {
            .property-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        /* Tablet: 2 Spalten */
        @media (min-width: 768px) and (max-width: 991px) {
            .property-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* Smartphone: 1 Spalte */
        @media (max-width: 767px) {
            .property-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Property Card */
        .property-card {
            background: var(--cardBg);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            border: 1px solid var(--borderColor);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .property-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadowHover);
            border-color: var(--primary);
        }

        /* Card Image */
        .card-image {
            position: relative;
            padding-top: 75%; /* 4:3 Aspect Ratio */
            overflow: hidden;
            background: #e2e8f0;
        }

        .card-image img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .property-card:hover .card-image img {
            transform: scale(1.05);
        }

        .card-image-placeholder {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
            color: #9ca3af;
            font-size: 3rem;
        }

        /* Card Content */
        .card-content {
            padding: 1.25rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .card-price {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--success);
            margin-bottom: 0.5rem;
            line-height: 1.2;
        }

        .card-price span {
            font-size: 1rem;
            font-weight: 400;
            color: #64748b;
        }

        .card-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 1rem;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 0.75rem;
            margin-bottom: 1rem;
        }

        .meta-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: #475569;
        }

        .meta-icon {
            font-size: 1.1rem;
            color: var(--primary);
        }

        .card-footer {
            margin-top: auto;
            padding-top: 1rem;
            border-top: 1px solid var(--borderColor);
        }

        .card-source {
            font-size: 0.75rem;
            color: #64748b;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        /* Empty State */
        .empty-state {
            text-align: center;
            padding: 4rem 2rem;
            background: var(--cardBg);
            border-radius: 16px;
            box-shadow: var(--shadow);
        }

        .empty-icon {
            font-size: 5rem;
            margin-bottom: 1.5rem;
        }

        .empty-state h2 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: var(--secondary);
        }

        .empty-state p {
            color: #64748b;
            margin-bottom: 1.5rem;
        }

        .error-message {
            background: #fee2e2;
            border: 1px solid #fecaca;
            color: #dc2626;
            padding: 1rem 1.5rem;
            border-radius: 12px;
            margin-bottom: 2rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .error-code {
            font-size: 1.5rem;
            font-weight: bold;
        }

        /* Responsive Adjustments */
        @media (max-width: 767px) {
            .header-section h1 {
                font-size: 1.75rem;
            }

            .header-section {
                padding: 2rem 0;
            }

            .card-price {
                font-size: 1.5rem;
            }

            .card-meta {
                grid-template-columns: 1fr 1fr;
                gap: 0.5rem;
            }

            .property-grid {
                gap: 1rem;
            }
        }

        /* Loading Animation */
        @keyframes shimmer {
            0% {
                background-position: -468px 0;
            }
            100% {
                background-position: 468px 0;
            }
        }

        .skeleton {
            background: linear-gradient(to right, #f0f0f0 8%, #e0e0e0 18%, #f0f0f0 33%);
            background-size: 800px 104px;
            animation: shimmer 2s linear infinite forwards;
        }