:root {
            --blue-primary: #1E40AF;      /* Biru Utama (Royal Blue) */
            --blue-secondary: #2563EB;    /* Biru Aksen / Hover */
            --blue-light-bg: #F0F6FF;     /* Latar Belakang Biru Sangat Terang */
            --blue-card-bg: #E0EDFF;      /* Latar Belakang Card Soft Blue */
            --blue-soft-border: #BFDBFE;  /* Border Biru Lembut */
            --text-main: #0F172A;         /* Teks Gelap Kontras */
            --text-muted: #475569;        /* Teks Muted Gray-Blue */
        }

        body {
            font-family: 'Plus Jakarta Sans', 'Poppins', sans-serif;
            color: var(--text-main);
            background-color: #FFFFFF;
            overflow-x: hidden;
        }

        /* Navbar Biru Cerah */
        .custom-navbar {
            background-color: var(--blue-primary) !important;
            border-bottom: 2px solid rgba(255, 255, 255, 0.15);
            transition: all 0.3s ease;
        }

        .navbar-brand .brand-text {
            font-size: 1.4rem;
            letter-spacing: 1px;
        }

        .nav-link {
            color: #E0F2FE !important;
            font-weight: 500;
            font-size: 0.95rem;
            margin: 0 5px;
            transition: color 0.3s ease;
        }

        .nav-link:hover, .nav-link.active {
            color: #FFFFFF !important;
            font-weight: 700;
        }

        /* Hero Section (Biru Terang & Soft) */
        .hero-section {
            background: linear-gradient(180deg, var(--blue-light-bg) 0%, #FFFFFF 100%);
            position: relative;
            padding-top: 150px;
            padding-bottom: 100px;
        }

        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-main);
        }

        .hero-text {
            font-size: 1.1rem;
            color: var(--text-muted);
        }

        /* Variasi Section Biru Terang */
        .bg-light-blue {
            background-color: var(--blue-light-bg);
        }

        .bg-card-blue {
            background-color: var(--blue-card-bg);
        }
        /* Mengunci wadah kartu */
                    .portfolio-card {
            background: #ffffff;
            border: 1px solid #e2e8f0;
            border-radius: 12px;
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            box-shadow: 0 2px 8px rgba(0,0,0,0.04);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .portfolio-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 20px rgba(0,0,0,0.08);
        }

        .portfolio-img-wrapper {
            position: relative;
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: #f8fafc;
        }

        .portfolio-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .portfolio-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background-color: rgba(255, 255, 255, 0.95);
            color: #1d4ed8;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 6px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            z-index: 5;
        }

        .portfolio-content {
            padding: 1.25rem;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .portfolio-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: #0f172a;
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .portfolio-text {
            font-size: 0.85rem;
            color: #64748B;
            line-height: 1.5;
            margin-bottom: 1.25rem;
            flex-grow: 1;
        }

        .portfolio-link {
            color: #1d4ed8;
            font-size: 0.85rem;
            font-weight: 700;
            text-decoration: none;
        }