:root {
            /* Color System */
            --bg-primary: #0a0a0f;
            --bg-secondary: #111118;
            --bg-tertiary: #1a1a24;
            --bg-card: #1e1e2e;
            --bg-glass: rgba(255, 255, 255, 0.05);

            /* Neon Colors */
            --neon-cyan: #00f5ff;
            --neon-blue: #0080ff;
            --neon-green: #00cc66;
            --neon-teal: #00cc88;
            --neon-electric: #00ddff;

            /* Text Colors */
            --text-primary: #ffffff;
            --text-secondary: #a0a0a0;
            --text-muted: #6b6b6b;
            --text-accent: var(--neon-cyan);

            /* Gradients */
            --gradient-primary: linear-gradient(135deg, var(--neon-cyan) 0%, var(--neon-green) 100%);
            --gradient-secondary: linear-gradient(135deg, var(--neon-blue) 0%, var(--neon-teal) 100%);
            --gradient-glow: linear-gradient(45deg, transparent, rgba(0, 245, 255, 0.1), transparent);

            /* Spacing */
            --section-padding: 6rem 0;
            --container-padding: 0 2rem;
            --max-width: 1200px;

            /* Effects */
            --border-radius: 12px;
            --glow-size: 20px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Inter', sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            padding: 2rem;
        }

        /* Background Animation */
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background:
                radial-gradient(circle at 20% 80%, rgba(0, 245, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(0, 204, 102, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 40% 40%, rgba(0, 128, 255, 0.05) 0%, transparent 50%);
            z-index: -1;
            animation: backgroundShift 20s ease-in-out infinite;
        }

        @keyframes backgroundShift {

            0%,
            100% {
                opacity: 1;
            }

            50% {
                opacity: 0.8;
            }
        }

        /* Container */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: var(--container-padding);
        }

        /* Section Styling */
        .section {
            padding: var(--section-padding);
            position: relative;
        }

        .section-title {
            font-size: 3rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 3rem;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--border-radius);
            padding: 2rem;
            backdrop-filter: blur(10px);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: var(--gradient-primary);
            transform: scaleX(0);
            transition: var(--transition);
        }

        .card:hover::before {
            transform: scaleX(1);
        }

        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
            border-color: rgba(0, 245, 255, 0.3);
        }

        /* Search Bar */
        .search-container {
            max-width: 600px;
            margin: 0 auto 3rem;
            position: relative;
        }

        .search-input {
            width: 100%;
            padding: 1.25rem 1.5rem 1.25rem 3.5rem;
            background: var(--bg-card);
            border: 2px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--border-radius);
            color: var(--text-primary);
            font-size: 1.1rem;
            font-family: inherit;
            transition: var(--transition);
            backdrop-filter: blur(10px);
        }

        .search-input:focus {
            outline: none;
            border-color: var(--neon-cyan);
            box-shadow: 0 0 20px rgba(0, 245, 255, 0.2);
        }

        .search-input::placeholder {
            color: var(--text-muted);
        }

        .search-icon {
            position: absolute;
            left: 1.25rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            pointer-events: none;
        }

        /* Certificates Grid */
        .certificates-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }

        .certificate-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--border-radius);
            overflow: hidden;
            transition: var(--transition);
            position: relative;
            backdrop-filter: blur(10px);
        }

        .certificate-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--gradient-primary);
            transform: scaleX(0);
            transition: var(--transition);
        }

        .certificate-card:hover::before {
            transform: scaleX(1);
        }

        .certificate-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
            border-color: rgba(0, 245, 255, 0.3);
        }

        .certificate-image {
            width: 100%;
            height: 200px;
            background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        .certificate-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

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

        .certificate-placeholder {
            color: var(--text-muted);
            font-size: 3rem;
            opacity: 0.5;
        }

        .certificate-content {
            padding: 1.5rem;
        }

        .certificate-institution {
            color: var(--neon-cyan);
            font-size: 0.9rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 0.5rem;
        }

        .certificate-title {
            color: var(--text-primary);
            font-size: 1.2rem;
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 1rem;
        }

        .certificate-date {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 1rem;
            font-family: 'JetBrains Mono', monospace;
        }

        .certificate-skills {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
        }

        .skill-tag {
            background: rgba(0, 245, 255, 0.1);
            color: var(--neon-cyan);
            padding: 0.3rem 0.8rem;
            border-radius: 15px;
            font-size: 0.8rem;
            border: 1px solid rgba(0, 245, 255, 0.3);
            font-weight: 500;
        }

        .certificate-links {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .certificate-link {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--neon-green);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            padding: 0.6rem 1.2rem;
            border: 1px solid rgba(0, 204, 102, 0.3);
            border-radius: 8px;
            background: rgba(0, 204, 102, 0.05);
            font-size: 0.9rem;
        }

        .certificate-link:hover {
            color: var(--text-primary);
            background: rgba(0, 204, 102, 0.15);
            transform: translateY(-2px);
        }

        .certificate-download {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--neon-cyan);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            padding: 0.6rem 1.2rem;
            border: 1px solid rgba(0, 245, 255, 0.3);
            border-radius: 8px;
            background: rgba(0, 245, 255, 0.05);
            font-size: 0.9rem;
        }

        .certificate-download:hover {
            color: var(--text-primary);
            background: rgba(0, 245, 255, 0.15);
            transform: translateY(-2px);
        }

        /* No Results Message */
        .no-results {
            text-align: center;
            padding: 4rem 2rem;
            color: var(--text-muted);
            display: none;
        }

        .no-results.show {
            display: block;
        }

        .no-results-icon {
            font-size: 4rem;
            margin-bottom: 1rem;
            opacity: 0.5;
        }

        /* Results Counter */
        .results-info {
            text-align: center;
            margin-bottom: 2rem;
            color: var(--text-secondary);
            font-family: 'JetBrains Mono', monospace;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .certificates-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .section-title {
                font-size: 2rem;
            }

            .search-input {
                font-size: 1rem;
                padding: 1rem 1.25rem 1rem 3rem;
            }
        }

        /* Animation for filtered results */
        .certificate-card.hidden {
            opacity: 0;
            transform: scale(0.8);
            display: none;
        }

        .certificate-card.visible {
            opacity: 1;
            transform: scale(1);
            display: block;
        }