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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            color: #e0e0e0;
            min-height: 100vh;
        }

        header {
            background: linear-gradient(90deg, #0f3460 0%, #16213e 100%);
            padding: 2rem;
            text-align: center;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
        }

        h1 {
            color: #00d4ff;
            font-size: 2.5rem;
            margin-bottom: 0.5rem;
            text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
        }

        .tagline {
            color: #a0a0a0;
            font-style: italic;
        }

        nav {
            background: #0f3460;
            padding: 1rem;
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }

        .nav-btn {
            background: #16213e;
            color: #00d4ff;
            border: 2px solid #00d4ff;
            padding: 0.8rem 1.5rem;
            cursor: pointer;
            border-radius: 5px;
            font-size: 1rem;
            transition: all 0.3s ease;
        }

        .nav-btn:hover {
            background: #00d4ff;
            color: #16213e;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 212, 255, 0.4);
        }

        .nav-btn.active {
            background: #00d4ff;
            color: #16213e;
        }

        .container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
        }

        .section {
            display: none;
            animation: fadeIn 0.5s ease;
        }

        .section.active {
            display: block;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .search-box {
            width: 100%;
            padding: 1rem;
            margin-bottom: 2rem;
            background: #16213e;
            border: 2px solid #00d4ff;
            border-radius: 5px;
            color: #e0e0e0;
            font-size: 1rem;
        }

        .search-box:focus {
            outline: none;
            box-shadow: 0 0 15px rgba(0, 212, 255, 0.5);
        }

        .card {
            background: #16213e;
            border: 2px solid #0f3460;
            border-radius: 10px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            transition: all 0.3s ease;
        }

        .card:hover {
            border-color: #00d4ff;
            box-shadow: 0 4px 12px rgba(0, 212, 255, 0.3);
            transform: translateY(-5px);
        }

        .card h3 {
            color: #00d4ff;
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1.5rem;
        }

        .stat {
            display: flex;
            justify-content: space-between;
            padding: 0.5rem 0;
            border-bottom: 1px solid #0f3460;
        }

        .stat:last-child {
            border-bottom: none;
        }

        .stat-label {
            color: #a0a0a0;
        }

        .stat-value {
            color: #00d4ff;
            font-weight: bold;
        }

        .tag {
            display: inline-block;
            background: #0f3460;
            color: #00d4ff;
            padding: 0.3rem 0.8rem;
            border-radius: 15px;
            font-size: 0.9rem;
            margin: 0.2rem;
        }

        .upgrade-path {
            background: #0f3460;
            padding: 1rem;
            border-radius: 5px;
            margin-top: 1rem;
        }

        .map-container {
            background: #0f3460;
            padding: 1.5rem;
            border-radius: 10px;
            text-align: center;
        }

        .map-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 0.5rem;
            margin-top: 1rem;
        }

        .map-cell {
            background: #16213e;
            padding: 1rem;
            border: 1px solid #00d4ff;
            border-radius: 5px;
            font-size: 0.9rem;
        }

        .danger-high { border-color: #ff4444; color: #ff4444; }
        .danger-medium { border-color: #ffaa00; color: #ffaa00; }
        .danger-low { border-color: #00ff88; color: #00ff88; }

        .tip-box {
            background: #0f3460;
            border-left: 4px solid #00d4ff;
            padding: 1rem;
            margin: 1rem 0;
            border-radius: 5px;
        }

        .tip-box strong {
            color: #00d4ff;
        }

        .no-results {
            text-align: center;
            color: #a0a0a0;
            padding: 2rem;
            font-size: 1.2rem;
        }