:root {
            --yabatech-green: #007A33;
            --yabatech-gold: #FDB913;
            --yabatech-dark-green: #005a26;
            --yabatech-light-green: #e8f5e8;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: #f8f9fa;
        }

        .header-section {
            background: linear-gradient(135deg, var(--yabatech-green) 0%, var(--yabatech-dark-green) 100%);
            color: white;
            padding: 1rem 0;
            position: relative;
            overflow: hidden;
        }

        .header-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 20"><defs><pattern id="grain" width="100" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="20" fill="url(%23grain)"/></svg>');
            opacity: 0.3;
        }

        .logo-container {
            position: relative;
            z-index: 2;
        }

        .college-logo {
            width: 90px;
            height: 90px;
            /* background: var(--yabatech-gold); */
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: bold;
            color: var(--yabatech-green);
            margin-bottom: 1rem;
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
        }

        .college-logo img {
            width: 100px;
            height: 100px;
            object-fit: contain;
        }

        /* .search-bar {
            max-width: 500px;
            margin: 1rem auto;
        }

        .search-bar .form-control {
            border-radius: 25px;
            padding: 12px 20px;
            border: none;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
        } */

        .main-section {
            padding: 3rem 0;
        }

        .portal-card {
            background: white;
            border-radius: 15px;
            padding: 2rem;
            text-align: center;
            transition: all 0.3s ease;
            border: none;
            box-shadow: 0 4px 15px rgba(0,0,0,0.08);
            height: 100%;
            margin-bottom: 1.5rem;
            position: relative;
            overflow: hidden;
        }

        .portal-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(253, 185, 19, 0.1), transparent);
            transition: left 0.5s ease;
        }

        .portal-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0,122,51,0.15);
        }

        .portal-card:hover::before {
            left: 100%;
        }

        .portal-icon {
            width: 60px;
            height: 60px;
            margin: 0 auto 1rem;
            background: linear-gradient(135deg, var(--yabatech-light-green), white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--yabatech-green);
            position: relative;
            z-index: 2;
        }

        .portal-card h5 {
            color: var(--yabatech-green);
            font-weight: 600;
            margin-bottom: 1rem;
            position: relative;
            z-index: 2;
            font-size: 1.1rem;
        }

        .portal-card p {
            color: #6c757d;
            margin-bottom: 1.5rem;
            line-height: 1.5;
            position: relative;
            z-index: 2;
            font-size: 0.9rem;
        }

        .btn-portal {
            background: var(--yabatech-green);
            color: white;
            border: none;
            padding: 10px 25px;
            border-radius: 20px;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
            z-index: 2;
            text-decoration: none;
            display: inline-block;
            font-size: 0.9rem;
        }

        .btn-portal:hover {
            background: var(--yabatech-dark-green);
            color: white;
            transform: scale(1.05);
        }

        .btn-gold {
            background: var(--yabatech-gold);
            color: var(--yabatech-green);
        }

        .btn-gold:hover {
            background: #e6a50a;
            color: var(--yabatech-green);
        }

        .footer-section {
            background: var(--yabatech-green);
            color: white;
            padding: 1rem 0;
            margin-top: 3rem;
            text-align: center;
        }

        .support-text {
            color: white;
            margin-bottom: 1.5rem;
            font-weight: 500;
        }

        .social-icons {
            display: flex;
            justify-content: center;
            gap: 1rem;
            margin: 1.5rem 0;
        }

        .social-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-decoration: none;
            transition: all 0.3s ease;
            font-size: 1.2rem;
        }

        .social-icon.twitter {
            background-color: black;
        }

        .social-icon.twitter i {
            color: white;
        }

        .social-icon.instagram {
            background: linear-gradient(45deg, #f09433 0%,#e6683c 25%,#dc2743 50%,#cc2366 75%,#bc1888 100%);
        }

        .social-icon.telegram {
            background-color: #0088cc;
        }

        .social-icon:hover {
            transform: translateY(-1px) scale(1.1);
            box-shadow: 0 1px 10px rgba(0,0,0,0.2);
        }

        .header-social {
            margin-top: 1rem;
        }

        .header-social .social-icon {
            width: 30px;
            height: 30px;
            font-size: 1rem;
        }

        .fade-in {
            animation: fadeInUp 0.6s ease forwards;
            opacity: 0;
            transform: translateY(20px);
        }

        .fade-in:nth-child(1) { animation-delay: 0.1s; }
        .fade-in:nth-child(2) { animation-delay: 0.15s; }
        .fade-in:nth-child(3) { animation-delay: 0.2s; }
        .fade-in:nth-child(4) { animation-delay: 0.25s; }
        .fade-in:nth-child(5) { animation-delay: 0.3s; }
        .fade-in:nth-child(6) { animation-delay: 0.35s; }

        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @media (max-width: 768px) {
            .portal-card {
                margin-bottom: 1rem;
                padding: 1.5rem;
            }
            
            .college-logo {
                width: 50px;
                height: 50px;
                font-size: 1.2rem;
            }

            .college-logo img {
                width: 35px;
                height: 35px;
            }

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

            .portal-card h5 {
                font-size: 1rem;
            }

            .portal-card p {
                font-size: 0.85rem;
            }
        }

        .section-divider {
            border-top: 2px solid var(--yabatech-gold);
            margin: 2rem 1;
            opacity: 0.3;
        }