:root {
            --hl7-red: #CE1126;
            --dark-blue: #1d3557;
            --text-color: #495057;
            --section-bg: #f8f9fa;
            --white: #ffffff;
        }

        body {
            font-family: 'Poppins', sans-serif;
            color: var(--text-color);
            line-height: 1.7;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: 'Roboto', sans-serif;
            font-weight: 700;
            color: var(--dark-blue);
        }

        .navbar {
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
            padding-top: 1rem;
            padding-bottom: 1rem;
            transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .navbar-scrolled {
            padding-top: 0.5rem;
            padding-bottom: 0.5rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.7rem;
            letter-spacing: -0.5px;
            transition: font-size 0.3s;
        }

        .navbar-scrolled .navbar-brand {
            font-size: 1.5rem;
        }

        .brand-hl7 {
            color: var(--dark-blue) !important;
        }

        .brand-cevirici {
            color: var(--hl7-red) !important;
        }

        .nav-link {
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--dark-blue) !important;
            padding: 0.5rem 0.85rem !important;
            border-radius: 6px;
            transition: all 0.25s ease;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--hl7-red) !important;
            background-color: rgba(206, 17, 38, 0.06);
        }

        /* CTA Buton */
        .btn-cta {
            background-color: var(--hl7-red);
            color: var(--white) !important;
            font-weight: 600;
            font-size: 0.85rem;
            padding: 0.55rem 1.4rem;
            border-radius: 50px;
            border: 2px solid var(--hl7-red);
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .btn-cta:hover {
            background-color: transparent;
            color: var(--hl7-red) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(206, 17, 38, 0.25);
        }

        /* Dropdown genel */
        .dropdown-item {
            font-size: 0.85rem;
            font-weight: 500;
        }

        .dropdown-menu {
            border: none;
            border-radius: 12px;
            padding: 0.5rem;
            margin-top: 0.5rem !important;
            animation: dropdownFadeIn 0.25s ease;
        }

        @keyframes dropdownFadeIn {
            from { opacity: 0; transform: translateY(8px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* Dropdown hover ile açılma (desktop) */
        @media (min-width: 992px) {
            .nav-item.dropdown:hover > .dropdown-menu {
                display: block;
                margin-top: 0;
            }
        }

        /* Mega Dropdown */
        .mega-dropdown {
            position: static;
        }

        .mega-menu {
            width: 100%;
            left: 0;
            right: 0;
            border-radius: 0 0 12px 12px;
            padding: 1.25rem 0;
            border-top: 3px solid var(--hl7-red);
        }

        .mega-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 0.85rem 1rem;
            border-radius: 10px;
            text-decoration: none;
            color: var(--text-color);
            transition: all 0.2s ease;
            height: 100%;
        }

        .mega-item:hover {
            background-color: rgba(206, 17, 38, 0.05);
            color: var(--text-color);
        }

        .mega-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, #fde8ea, #fdd);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1rem;
            color: var(--hl7-red);
        }

        .mega-item strong {
            display: block;
            font-size: 0.88rem;
            color: var(--dark-blue);
            margin-bottom: 3px;
        }

        .mega-item small {
            font-size: 0.76rem;
            color: #6c757d;
            line-height: 1.4;
        }

        .mega-footer {
            margin-top: 0.75rem;
            padding-top: 0.75rem;
            border-top: 1px solid #eee;
        }

        .mega-footer-link {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--hl7-red);
            text-decoration: none;
        }

        .mega-footer-link:hover {
            color: #A80F1F;
        }

        /* Mobil uyumluluk */
        @media (max-width: 991.98px) {
            .mega-dropdown { position: relative; }
            .mega-menu { border-radius: 0; border-top: none; padding: 0.5rem 0; }
            .mega-menu .row { flex-direction: column; }
            .mega-item { padding: 0.6rem 0.75rem; }
            .mega-icon { width: 34px; height: 34px; font-size: 0.9rem; }

            .btn-cta {
                margin-top: 0.75rem;
                text-align: center;
                width: 100%;
                margin-left: 0 !important;
            }
        }

        .btn-primary {
            background-color: var(--hl7-red);
            border-color: var(--hl7-red);
            padding: 12px 35px;
            font-weight: 600;
            border-radius: 50px;
            transition: all 0.3s ease;
        }

        .btn-primary:hover {
            background-color: #A80F1F;
            border-color: #A80F1F;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(206, 17, 38, 0.3);
        }

        section {
            padding: 100px 0;
            overflow: hidden;
            scroll-margin-top: 80px;
        }

        @media (max-width: 991.98px) {
            section { scroll-margin-top: 70px; }
        }

        .section-bg {
            background-color: var(--section-bg);
        }

        #hero {
            width: 100%;
            height: 100vh;
            background: linear-gradient(rgba(29, 53, 87, 0.7), rgba(0, 0, 0, 0.8)), url('slider.jpeg') center center;
            background-size: cover;
            color: var(--white);
            display: flex;
            align-items: center;
        }

        #hero h1 {
            font-size: 3.8rem;
            font-weight: 700;
            line-height: 1.2;
            color: var(--white);
            text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.6);
        }

        #hero .brand-name {
            color: #ffc107;
        }

        #hero p {
            font-size: 1.3rem;
            max-width: 750px;
            margin: 25px auto 40px auto;
        }

        .section-title {
            text-align: center;
            padding-bottom: 60px;
        }

        .section-title h2 {
            font-size: 2.5rem;
            position: relative;
            padding-bottom: 20px;
            margin-bottom: 20px;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            display: block;
            width: 80px;
            height: 4px;
            background: var(--hl7-red);
            border-radius: 5px;
            bottom: 0;
            left: calc(50% - 40px);
        }

        .section-title p {
            max-width: 700px;
            margin: auto;
            color: #6c757d;
        }

        .subsection-title {
            font-size: 2rem;
            color: var(--dark-blue);
            margin-bottom: 40px;
            text-align: center;
        }

        .challenge-box {
            background: var(--white);
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 5px 25px rgba(0, 0, 0, 0.07);
            text-align: center;
            height: 100%;
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .challenge-box:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
        }

        .challenge-box i {
            font-size: 3rem;
            color: var(--hl7-red);
            margin-bottom: 20px;
            display: inline-block;
        }

        .how-it-works-step {
            text-align: center;
            position: relative;
        }

        .how-it-works-step .icon-circle {
            width: 90px;
            height: 90px;
            border-radius: 50%;
            background-color: #fde8ea;
            color: var(--hl7-red);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px auto;
            font-size: 2.8rem;
            box-shadow: 0 0 0 8px rgba(206, 17, 38, 0.1);
            transition: all 0.3s;
        }

        .how-it-works-step:hover .icon-circle {
            transform: scale(1.1);
        }

        .how-it-works-flow .col-lg-3:not(:last-child)::after {
            content: '';
            position: absolute;
            width: 60%;
            height: 2px;
            background-image: linear-gradient(to right, #ccc 50%, transparent 50%);
            background-size: 15px 2px;
            top: 45px;
            left: 70%;
        }

        @media (max-width: 991px) {
            .how-it-works-flow .col-lg-3:not(:last-child)::after {
                display: none;
            }
        }

        .feature-list-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 25px;
        }

        .feature-list-item i {
            font-size: 1.8rem;
            color: #28a745;
            margin-right: 20px;
            margin-top: 5px;
        }

        .contact-details-list {
            list-style: none;
            padding-left: 0;
        }

        .contact-details-list li {
            display: flex;
            align-items: flex-start;
            margin-bottom: 20px;
        }

        .contact-details-list .icon {
            font-size: 1.5rem;
            color: var(--hl7-red);
            margin-right: 15px;
            width: 25px;
            text-align: center;
        }

        .contact-details-list a {
            color: var(--text-color);
            text-decoration: none;
            transition: color 0.3s;
        }

        .contact-details-list a:hover {
            color: var(--hl7-red);
        }

        .contact-card {
            overflow: hidden;
            border-radius: 10px;
        }

        .contact-map {
            width: 100%;
            height: 100%;
            min-height: 400px;
            border: 0;
        }

        .info-card {
            background: var(--white);
            padding: 25px;
            border-radius: 10px;
            box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08);
            text-align: center;
            margin-bottom: 20px;
            transition: transform 0.3s;
        }

        .info-card:hover {
            transform: translateY(-5px);
        }

        .info-card i {
            font-size: 2.5rem;
            color: var(--hl7-red);
            margin-bottom: 15px;
        }

        .info-card h5 {
            font-size: 1.1rem;
            margin-bottom: 10px;
        }

        .info-card p {
            font-size: 0.9rem;
            color: #6c757d;
            margin: 0;
        }

        footer {
            background-color: var(--dark-blue);
            color: rgba(255, 255, 255, 0.7);
            padding: 30px 0;
        }

        footer strong {
            color: var(--white);
        }

        .partner-card-link {
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .partner-card-link:hover {
            transform: translateY(-6px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.1) !important;
        }

        .partner-card-link:hover .partner-logo {
            filter: none !important;
        }