@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap');

        :root {
            --primary-bg: #0f172a;
            --card-bg: #1e293b;
            --accent-blue: #38bdf8;
            --accent-green: #4ade80;
            --accent-orange: #fb923c;
            --text-main: #f1f5f9;
        }

        body {
            font-family: 'Poppins', sans-serif;
            background-color: var(--primary-bg);
            color: var(--text-main);
            margin: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            min-height: 100vh;
        }

        .navbar {
            width: 100%;
            padding: 20px 5%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-sizing: border-box;
        }

        .btn-back {
            text-decoration: none;
            color: var(--text-main);
            font-size: 0.9rem;
            border: 1px solid var(--accent-blue);
            padding: 8px 16px;
            border-radius: 8px;
            transition: 0.3s;
        }

        .btn-back:hover {
            background: var(--accent-blue);
            color: var(--primary-bg);
        }

        .container {
            max-width: 1100px;
            width: 90%;
            padding: 40px 0;
        }

        .header {
            text-align: center;
            margin-bottom: 60px;
        }

        .header h1 {
            font-size: 2.5rem;
            margin: 0;
            background: linear-gradient(to right, #38bdf8, #818cf8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .project-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .project-card {
            background: var(--card-bg);
            border-radius: 20px;
            padding: 30px;
            position: relative;
            transition: transform 0.4s ease, box-shadow 0.4s ease;
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .project-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
            border-color: var(--accent-blue);
        }

        .project-card h2 {
            font-size: 1.8rem;
            margin-top: 0;
            color: var(--accent-blue);
        }

        .project-card p {
            color: #94a3b8;
            line-height: 1.6;
            margin-bottom: 25px;
        }

        .visit-btn {
            text-decoration: none;
            background: var(--accent-blue);
            color: var(--primary-bg);
            padding: 12px 20px;
            border-radius: 10px;
            font-weight: 700;
            text-align: center;
            transition: 0.3s;
        }

        .visit-btn:hover {
            filter: brightness(1.2);
            letter-spacing: 1px;
        }

        /* Unique Border Colors for each card */
        .card-toolify { border-top: 4px solid var(--accent-green); }
        .card-portal { border-top: 4px solid var(--accent-blue); }
        .card-facts { border-top: 4px solid var(--accent-orange); }

        @media (max-width: 600px) {
            .header h1 { font-size: 1.8rem; }
        }