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

        body {
            background: url('/assets/img/bg.png') no-repeat center center fixed;
            background-size: cover;
            min-height: 100vh;
            padding: 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .container {
            width: 100%;
            max-width: 1400px;
            margin-top: 40px;
        }

        .tools-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 25px;
            margin-bottom: 80px;
        }

        .tool-card {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(30px) saturate(120%);
            -webkit-backdrop-filter: blur(30px) saturate(120%);
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 30px;
            transition: all 0.3s ease;
            cursor: pointer;
            position: relative;
            overflow: hidden;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .tool-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
        }

        .tool-card:hover {
            transform: translateY(-5px);
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
        }

        .tool-category {
            display: inline-block;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            font-weight: 500;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 15px;
            padding: 6px 14px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            align-self: flex-start;
        }

        .tool-name {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 500;
            margin-bottom: 20px;
            line-height: 1.4;
            flex-grow: 1;
        }

        .tool-link {
            color: rgba(255, 255, 255, 0.9);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.2s ease;
            align-self: flex-start;
            margin-top: auto;
        }

        .tool-link:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: rgba(255, 255, 255, 0.2);
        }

        .tool-link::after {
            content: '→';
            font-size: 1.1rem;
            opacity: 0.8;
        }

        .loading {
            color: rgba(255, 255, 255, 0.8);
            text-align: center;
            font-size: 1.2rem;
            padding: 60px;
            grid-column: 1 / -1;
        }

        .error {
            color: #ff6b6b;
            text-align: center;
            font-size: 1.2rem;
            padding: 60px;
            grid-column: 1 / -1;
            background: rgba(255, 107, 107, 0.1);
            border-radius: 20px;
            border: 1px solid rgba(255, 107, 107, 0.2);
        }

        .category-section {
            margin-bottom: 60px;
        }

        .category-title {
            color: #fff;
            font-size: 1.8rem;
            font-weight: 400;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 2px solid rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            gap: 15px;
            text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
        }

        .category-title::before {
            content: '';
            width: 6px;
            height: 24px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 3px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 15px;
                margin-top: 20px;
            }

            .tools-grid {
                grid-template-columns: 1fr;
                gap: 20px;
                margin-bottom: 40px;
            }

            .category-title {
                font-size: 1.5rem;
                margin-bottom: 25px;
            }

            .tool-card {
                padding: 25px;
            }

            .category-section {
                margin-bottom: 50px;
            }
        }