/* ----- brand colors: blue, white, dark navy ----- */
        :root {
            --primary-blue: #0d6efd;
            --dark-navy: #0a1a3a;
            --light-blue: #e6f0ff;
            --white: #ffffff;
            --off-white: #f8fbff;
        }

        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            background-color: var(--off-white);
            color: #1e2a41;
            scroll-behavior: smooth;
        }

        /* top header */
        .top-header {
            background: var(--dark-navy);
            color: #d0e0ff;
            font-size: 0.85rem;
            padding: 6px 0;
            border-bottom: 1px solid #1f3a6a;
        }

        .top-header a {
            color: #d0e0ff;
            text-decoration: none;
            margin: 0 6px;
            transition: 0.2s;
        }

        .top-header a:hover {
            color: white;
        }

        .top-header .social-icons a {
            font-size: 0.9rem;
            margin-left: 10px;
        }

        /* navbar */
        .navbar {
            background: white !important;
            box-shadow: 0 4px 12px rgba(10, 26, 58, 0.08);
            padding: 8px 0;
            transition: 0.2s;
        }

        .navbar-brand {
            font-weight: 700;
            color: var(--dark-navy) !important;
            letter-spacing: -0.5px;
        }

        .navbar-brand i {
            color: var(--primary-blue);
            margin-right: 6px;
        }

        .nav-link {
            font-weight: 500;
            color: #1e2a41 !important;
            margin: 0 6px;
        }

        .nav-link:hover {
            color: var(--primary-blue) !important;
        }

        .btn-call-nav {
            background: var(--primary-blue);
            color: white !important;
            border-radius: 30px;
            padding: 6px 20px;
            font-weight: 600;
            transition: 0.2s;
        }

        .btn-call-nav:hover {
            background: #0b5ed7;
            color: white;
        }

        /* sticky */
        .sticky-top {
            z-index: 1030;
        }

        /* hero */
        .hero-slider .carousel-item {
            min-height: 75vh;
            background: linear-gradient(135deg, #0a1a3a 0%, #1a3a7a 100%);
            color: white;
            display: flex;
            align-items: center;
        }

        .hero-slider .carousel-item .container {
            padding: 40px 20px;
        }

        .hero-slider h1 {
            font-weight: 700;
            font-size: 2.8rem;
        }

        .hero-slider p {
            font-size: 1.2rem;
            opacity: 0.9;
            max-width: 600px;
        }

        .hero-slider .btn-outline-light {
            border-width: 2px;
        }

        /* section titles */
        section {
            overflow: hidden;
        }
        .section-title {
            font-weight: 700;
            color: var(--dark-navy);
            position: relative;
            margin-bottom: 2rem;
        }

        .section-title:after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary-blue);
            margin-top: 8px;
            border-radius: 4px;
        }

        /* service cards */
        .service-card {
            background: white;
            border-radius: 20px;
            padding: 28px 18px;
            box-shadow: 0 8px 24px rgba(10, 26, 58, 0.06);
            transition: 0.25s;
            height: 100%;
            border: 1px solid rgba(13, 110, 253, 0.08);
        }

        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 40px rgba(10, 26, 58, 0.10);
        }

        .service-card i {
            font-size: 2.6rem;
            color: var(--primary-blue);
            background: var(--light-blue);
            padding: 14px;
            border-radius: 16px;
            margin-bottom: 18px;
        }

        /* why choose us */
        .why-icon {
            background: var(--light-blue);
            color: var(--primary-blue);
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 14px;
        }

        /* gallery */
        .gallery-img {
            border-radius: 16px;
            overflow: hidden;
            transition: 0.3s;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
        }

        .gallery-img img {
            transition: 0.3s;
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .gallery-img:hover img {
            transform: scale(1.04);
        }
        .gallery-section {
    background: #f8f9fa;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
}

.gallery-item img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    transition: .5s;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: .4s;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

/* Lightbox */

#lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.95);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 99999;
}

#lightbox img {
    max-width: 90%;
    max-height: 85vh;
    border-radius: 10px;
    animation: zoomIn .4s ease;
}

.close-btn {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #fff;
    font-size: 45px;
    cursor: pointer;
    transition: .3s;
}

.close-btn:hover {
    color: #ffc107;
}

@keyframes zoomIn {
    from{
        transform: scale(.7);
        opacity:0;
    }
    to{
        transform: scale(1);
        opacity:1;
    }
}

/* Responsive */

@media(max-width:768px){

    .gallery-item img{
        height:220px;
    }

    .close-btn{
        font-size:35px;
        right:20px;
    }

    #lightbox img{
        max-width:95%;
    }
}

        /* process */
        .process-step {
            background: white;
            padding: 28px 16px;
            border-radius: 24px;
            box-shadow: 0 8px 24px rgba(10, 26, 58, 0.05);
            position: relative;
            height: 100%;
            border: 1px solid rgba(13, 110, 253, 0.08);
        }

        .process-step .step-num {
            background: var(--primary-blue);
            color: white;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.3rem;
            margin: 0 auto 16px;
        }

        .process-arrow {
            font-size: 2rem;
            color: var(--primary-blue);
            opacity: 0.5;
        }

        /* testimonials */
        .testimonial-card {
            background: white;
            border-radius: 24px;
            padding: 30px 20px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.03);
        }

        .testimonial-card .stars {
            color: #f5b342;
        }

        /* contact */
        .contact-info-block {
            background: white;
            padding: 28px;
            border-radius: 24px;
            box-shadow: 0 8px 24px rgba(10, 26, 58, 0.04);
        }

        .contact-info-block i {
            color: var(--primary-blue);
            width: 28px;
        }

        .contact-form {
            background: white;
            padding: 28px;
            border-radius: 24px;
            box-shadow: 0 8px 24px rgba(10, 26, 58, 0.04);
        }

        /* faq */
        .accordion-button:not(.collapsed) {
            background: var(--light-blue);
            color: var(--dark-navy);
        }

        .accordion-button:focus {
            box-shadow: none;
        }

        /* cta */
        .cta-section {
            background: linear-gradient(135deg, #0a1a3a 0%, #1a3a7a 100%);
            color: white;
            padding: 60px 0;
            border-radius: 40px 40px 0 0;
        }

        /* footer */
        .footer {
            background: #0a1a3a;
            color: #b6c9f0;
        }

        .footer a {
            color: #b6c9f0;
            text-decoration: none;
        }

        .footer a:hover {
            color: white;
        }

        .footer .bottom-footer {
            border-top: 1px solid #1f3a6a;
            padding-top: 18px;
            font-size: 0.9rem;
        }

        /* floating buttons */
        .floating-buttons {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 1040;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .floating-buttons a {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: white;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
            transition: 0.2s;
            text-decoration: none;
        }

        .floating-buttons .btn-float-call {
            background: #0d6efd;
        }

        .floating-buttons .btn-float-wa {
            background: #25d366;
        }

        .floating-buttons a:hover {
            transform: scale(1.05);
        }

        /* popup */
        .popup-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(10, 26, 58, 0.5);
            backdrop-filter: blur(4px);
            z-index: 1060;
            display: none;
            align-items: center;
            justify-content: center;
        }

        .popup-card {
            background: white;
            max-width: 480px;
            width: 95%;
            padding: 28px 24px;
            border-radius: 32px;
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
            animation: fadeUp 0.3s ease;
        }

        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }

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

        .popup-card .btn-close-popup {
            background: none;
            border: none;
            font-size: 1.6rem;
        }

        /* responsive */
        @media (max-width: 768px) {
            .hero-slider .carousel-item {
                min-height: 60vh;
            }

            .hero-slider h1 {
                font-size: 2rem;
            }

            .top-header .social-icons a {
                margin-left: 6px;
            }

            .process-arrow {
                transform: rotate(90deg);
            }
        }

        @media (max-width: 576px) {
            .top-header {
                font-size: 0.7rem;
            }

            .top-header .social-icons a {
                font-size: 0.8rem;
            }
        }