:root {
        --primary: #1a1a2e;
        --secondary: #16213e;
        --accent: #e94560;
        --accent-secondary: #0f3460;
        --light: #f8f9fa;
        --text-dark: #1a1a2e;
        --text-light: #ffffff;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: 'Open Sans', sans-serif;
        color: var(--text-dark);
        background: var(--light);
        overflow-x: hidden;
    }

    h1, h2, h3, h4, h5, h6 {
        font-family: 'Montserrat', sans-serif;
        font-weight: 700;
    }

    /* Preloader */
    .preloader {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: var(--primary);
        display: flex;
        justify-content: center;
        align-items: center;
        z-index: 9999;
        transition: opacity 0.5s ease, visibility 0.5s ease;
    }

    .preloader.hidden {
        opacity: 0;
        visibility: hidden;
    }

    .preloader-spinner {
        width: 60px;
        height: 60px;
        border: 4px solid rgba(233, 69, 96, 0.2);
        border-top-color: var(--accent);
        border-radius: 50%;
        animation: spin 1s linear infinite;
    }

    @keyframes spin {
        to { transform: rotate(360deg); }
    }

    /* Navbar */
    .navbar {
        background: transparent;
        padding: 1rem 0;
        transition: all 0.3s ease;
        position: fixed;
        width: 100%;
        top: 0;
        z-index: 1000;
    }

    .navbar.scrolled {
        background: var(--primary);
        padding: 0.5rem 0;
        box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    }

    .navbar-brand {
        font-family: 'Montserrat', sans-serif;
        font-weight: 700;
        font-size: 1.5rem;
        color: var(--text-light) !important;
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .navbar-brand i {
        color: var(--accent);
        font-size: 1.8rem;
    }

    .nav-link {
        color: var(--text-light) !important;
        font-weight: 600;
        margin: 0 0.5rem;
        position: relative;
        transition: color 0.3s ease;
    }

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        width: 0;
        height: 2px;
        background: var(--accent);
        transition: all 0.3s ease;
        transform: translateX(-50%);
    }

    .nav-link:hover::after {
        width: 100%;
    }

    .navbar-toggler {
        border: 2px solid var(--text-light);
        padding: 8px;
    }

    .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255, 255, 255, 1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }

    /* Hero Section */
    .hero {
        min-height: 100vh;
        background: linear-gradient(135deg, rgba(26, 26, 46, 0.95) 0%, rgba(15, 52, 96, 0.9) 100%),
                    url('https://images.unsplash.com/photo-1557804506-669a67965ba0?w=1920') center/cover no-repeat;
        display: flex;
        align-items: center;
        position: relative;
        overflow: hidden;
    }

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    }

    .hero-content {
        position: relative;
        z-index: 1;
        color: var(--text-light);
    }

    .hero h1 {
        font-size: 3.5rem;
        margin-bottom: 1.5rem;
        animation: fadeInUp 1s ease forwards;
        opacity: 0;
    }

    .hero .lead {
        font-size: 1.4rem;
        margin-bottom: 2rem;
        animation: fadeInUp 1s ease 0.2s forwards;
        opacity: 0;
    }

    .hero .btn {
        animation: fadeInUp 1s ease 0.4s forwards;
        opacity: 0;
    }

    .btn-accent {
        background: var(--accent);
        color: var(--text-light);
        padding: 1rem 2.5rem;
        font-weight: 600;
        border: none;
        border-radius: 50px;
        transition: all 0.3s ease;
        text-transform: uppercase;
        letter-spacing: 1px;
    }

    .btn-accent:hover {
        background: #d13a52;
        color: var(--text-light);
        transform: translateY(-3px);
        box-shadow: 0 10px 30px rgba(233, 69, 96, 0.4);
    }

    .floating-shapes {
        position: absolute;
        width: 100%;
        height: 100%;
        top: 0;
        left: 0;
        overflow: hidden;
        pointer-events: none;
    }

    .shape {
        position: absolute;
        border-radius: 50%;
        background: rgba(233, 69, 96, 0.1);
        animation: float 6s ease-in-out infinite;
    }

    .shape:nth-child(1) {
        width: 300px;
        height: 300px;
        top: -100px;
        right: -100px;
        animation-delay: 0s;
    }

    .shape:nth-child(2) {
        width: 200px;
        height: 200px;
        bottom: 10%;
        left: -50px;
        animation-delay: 2s;
    }

    .shape:nth-child(3) {
        width: 150px;
        height: 150px;
        top: 30%;
        right: 10%;
        animation-delay: 4s;
    }

    @keyframes float {
        0%, 100% { transform: translateY(0) rotate(0deg); }
        50% { transform: translateY(-20px) rotate(5deg); }
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(30px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* Section Styles */
    section {
        padding: 100px 0;
    }

    .section-title {
        text-align: center;
        margin-bottom: 3rem;
    }

    .section-title h2 {
        font-size: 2.5rem;
        color: var(--primary);
        margin-bottom: 1rem;
        position: relative;
        display: inline-block;
    }

    .section-title h2::after {
        content: '';
        position: absolute;
        bottom: -10px;
        left: 50%;
        transform: translateX(-50%);
        width: 80px;
        height: 4px;
        background: var(--accent);
        border-radius: 2px;
    }

    .section-title p {
        color: #666;
        font-size: 1.1rem;
        max-width: 600px;
        margin: 1.5rem auto 0;
    }

    /* About Section */
    .about-section {
        background: var(--text-light);
    }

    .about-content {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
        align-items: center;
    }

    .about-text p {
        font-size: 1.1rem;
        line-height: 1.8;
        color: #555;
        margin-bottom: 1.5rem;
    }

    .about-image {
        position: relative;
    }

    .about-image img {
        border-radius: 20px;
        box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
        width: 100%;
    }

    .about-image::before {
        content: '';
        position: absolute;
        top: -20px;
        right: -20px;
        width: 100%;
        height: 100%;
        border: 4px solid var(--accent);
        border-radius: 20px;
        z-index: -1;
    }

    .feature-cards {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
        margin-top: 3rem;
    }

    .feature-card {
        background: linear-gradient(135deg, var(--primary) 0%, var(--accent-secondary) 100%);
        color: var(--text-light);
        padding: 2rem;
        border-radius: 15px;
        text-align: center;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .feature-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    }

    .feature-card i {
        font-size: 3rem;
        margin-bottom: 1rem;
        color: var(--accent);
    }

    .feature-card h4 {
        font-size: 1.3rem;
        margin-bottom: 0.5rem;
    }

    .feature-card p {
        font-size: 0.95rem;
        opacity: 0.9;
    }

    /* Services Section */
    .services-section {
        background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
        color: var(--text-light);
    }

    .services-section .section-title h2 {
        color: var(--text-light);
    }

    .services-section .section-title p {
        color: rgba(255, 255, 255, 0.8);
    }

    .service-card {
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        border-radius: 20px;
        padding: 2.5rem;
        text-align: center;
        transition: all 0.3s ease;
        border: 1px solid rgba(255, 255, 255, 0.1);
        height: 100%;
    }

    .service-card:hover {
        background: rgba(255, 255, 255, 0.15);
        transform: translateY(-10px);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    }

    .service-card i {
        font-size: 3.5rem;
        margin-bottom: 1.5rem;
        color: var(--accent);
        transition: transform 0.3s ease;
    }

    .service-card:hover i {
        transform: scale(1.1);
    }

    .service-card h4 {
        font-size: 1.4rem;
        margin-bottom: 1rem;
    }

    .service-card p {
        font-size: 0.95rem;
        opacity: 0.85;
        line-height: 1.6;
    }

    /* Advantages Section */
    .advantages-section {
        background: var(--text-light);
    }

    .advantage-card {
        background: var(--text-light);
        border-radius: 20px;
        padding: 2.5rem;
        text-align: center;
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
        transition: all 0.3s ease;
        height: 100%;
        border: 2px solid transparent;
    }

    .advantage-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
        border-color: var(--accent);
    }

    .advantage-card .icon-wrapper {
        width: 80px;
        height: 80px;
        background: linear-gradient(135deg, var(--accent) 0%, #ff6b6b 100%);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 1.5rem;
        transition: transform 0.3s ease;
    }

    .advantage-card:hover .icon-wrapper {
        transform: scale(1.1) rotate(10deg);
    }

    .advantage-card i {
        font-size: 2rem;
        color: var(--text-light);
    }

    .advantage-card h4 {
        color: var(--primary);
        margin-bottom: 1rem;
    }

    .advantage-card p {
        color: #666;
        line-height: 1.6;
    }

    /* Tariffs Section */
    .steps-section {
        background: linear-gradient(135deg, #f0f4f8 0%, #e8ecf1 100%);
    }

    .step-card {
        background: var(--text-light);
        border-radius: 25px;
        padding: 2.5rem 2rem;
        text-align: center;
        box-shadow: 0 15px 50px rgba(0, 0, 0, 0.1);
        transition: all 0.4s ease;
        position: relative;
        height: 100%;
    }

    .step-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 25px 60px rgba(0, 0, 0, 0.15);
    }

    .step-number {
        position: absolute;
        top: -15px;
        left: 50%;
        transform: translateX(-50%);
        width: 45px;
        height: 45px;
        background: linear-gradient(135deg, var(--accent) 0%, #ff6b6b 100%);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-family: 'Montserrat', sans-serif;
        font-weight: 700;
        font-size: 1.3rem;
        color: var(--text-light);
        box-shadow: 0 5px 20px rgba(233, 69, 96, 0.4);
    }

    .step-icon {
        width: 80px;
        height: 80px;
        background: linear-gradient(135deg, var(--primary) 0%, var(--accent-secondary) 100%);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 1rem auto 1.5rem;
        transition: transform 0.3s ease;
    }

    .step-card:hover .step-icon {
        transform: scale(1.1) rotate(10deg);
    }

    .step-icon i {
        font-size: 2rem;
        color: var(--text-light);
    }

    .step-title {
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 1rem;
    }

    .step-description {
        color: #666;
        line-height: 1.6;
        font-size: 0.95rem;
    }

    .step-arrow {
        position: absolute;
        right: -20px;
        top: 50%;
        transform: translateY(-50%);
        color: var(--accent);
        font-size: 2rem;
        opacity: 0.5;
        display: none;
    }

    @media (min-width: 992px) {
        .step-arrow {
            display: block;
        }
    }

    @media (max-width: 991px) {
        .step-card {
            margin-bottom: 1rem;
        }
    }

    /* FAQ Section */
    .faq-section {
        background: var(--text-light);
    }

    .contact-section {
        background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
        color: var(--text-light);
    }

    .contact-section .section-title h2 {
        color: var(--text-light);
    }

    .contact-section .section-title p {
        color: rgba(255, 255, 255, 0.8);
    }

    .contact-section .section-title h2::after {
        background: var(--accent);
    }

    .contact-card {
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        border-radius: 20px;
        padding: 2.5rem;
        text-align: center;
        transition: all 0.3s ease;
        border: 1px solid rgba(255, 255, 255, 0.1);
        height: 100%;
    }

    .contact-card:hover {
        background: rgba(255, 255, 255, 0.15);
        transform: translateY(-10px);
        border-color: var(--accent);
    }

    .contact-card .icon-wrapper {
        width: 70px;
        height: 70px;
        background: var(--accent);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 1.5rem;
        transition: transform 0.3s ease;
    }

    .contact-card:hover .icon-wrapper {
        transform: scale(1.1);
    }

    .contact-card i {
        font-size: 1.8rem;
        color: var(--text-light);
    }

    .contact-card h4 {
        color: var(--text-light);
        margin-bottom: 0.5rem;
    }

    .contact-card p {
        color: rgba(255, 255, 255, 0.8);
        margin: 0;
        font-size: 1.1rem;
    }

    .contact-card a {
        color: rgba(255, 255, 255, 0.8);
        text-decoration: none;
        transition: color 0.3s ease;
    }

    .contact-card a:hover {
        color: var(--accent);
    }

    .contact-form-wrapper {
        background: var(--text-light);
        border-radius: 25px;
        padding: 3rem;
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    }

    .contact-form h3 {
        color: var(--primary);
        margin-bottom: 0.5rem;
    }

    .contact-form > p {
        color: #666;
        margin-bottom: 2rem;
    }

    .form-control {
        padding: 1rem 1.5rem;
        border: 2px solid #eee;
        border-radius: 10px;
        font-size: 1rem;
        transition: all 0.3s ease;
        margin-bottom: 1rem;
    }

    .form-control:focus {
        border-color: var(--accent);
        box-shadow: 0 0 0 4px rgba(233, 69, 96, 0.1);
    }

    textarea.form-control {
        resize: none;
    }

    .contact-form .btn-accent {
        width: 100%;
        padding: 1rem;
        font-size: 1.1rem;
    }

    .accordion-item {
        background: var(--text-light);
        border: none;
        margin-bottom: 1rem;
        border-radius: 15px !important;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
        overflow: hidden;
    }

    .accordion-button {
        font-family: 'Montserrat', sans-serif;
        font-weight: 600;
        font-size: 1.1rem;
        color: var(--primary);
        padding: 1.5rem 2rem;
        background: var(--text-light);
        box-shadow: none;
    }

    .accordion-button:not(.collapsed) {
        background: var(--text-light);
        color: var(--accent);
    }

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

    .accordion-button::after {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23e94560'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    }

    .accordion-body {
        padding: 1.5rem 2rem;
        color: #666;
        line-height: 1.8;
    }

    /* Footer */
    .footer {
        background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
        color: var(--text-light);
        padding: 80px 0 30px;
    }

    .footer-brand {
        font-family: 'Montserrat', sans-serif;
        font-weight: 700;
        font-size: 1.8rem;
        margin-bottom: 1rem;
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .footer-brand i {
        color: var(--accent);
    }

    .footer-description {
        color: rgba(255, 255, 255, 0.7);
        margin-bottom: 2rem;
        line-height: 1.6;
    }

    .footer-title {
        font-size: 1.2rem;
        font-weight: 600;
        margin-bottom: 1.5rem;
        position: relative;
        padding-bottom: 0.5rem;
    }

    .footer-title::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 40px;
        height: 3px;
        background: var(--accent);
    }

    .footer-links {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .footer-links li {
        margin-bottom: 0.75rem;
    }

    .footer-links a {
        color: rgba(255, 255, 255, 0.7);
        text-decoration: none;
        transition: all 0.3s ease;
    }

    .footer-links a:hover {
        color: var(--accent);
        padding-left: 5px;
    }

    .contact-item {
        display: flex;
        align-items: flex-start;
        gap: 15px;
        margin-bottom: 1rem;
    }

    .contact-item i {
        color: var(--accent);
        font-size: 1.2rem;
        margin-top: 3px;
    }

    .contact-item span {
        color: rgba(255, 255, 255, 0.8);
        line-height: 1.6;
    }

    .social-links {
        display: flex;
        gap: 15px;
        margin-top: 1.5rem;
    }

    .social-links a {
        width: 45px;
        height: 45px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-light);
        text-decoration: none;
        transition: all 0.3s ease;
    }

    .social-links a:hover {
        background: var(--accent);
        transform: translateY(-5px);
    }

    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        margin-top: 3rem;
        padding-top: 2rem;
        text-align: center;
        color: rgba(255, 255, 255, 0.6);
    }

    /* Scroll to top */
    .scroll-top {
        position: fixed;
        bottom: 30px;
        right: 30px;
        width: 50px;
        height: 50px;
        background: var(--accent);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-light);
        text-decoration: none;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 999;
        box-shadow: 0 5px 20px rgba(233, 69, 96, 0.4);
    }

    .scroll-top.visible {
        opacity: 1;
        visibility: visible;
    }

    .scroll-top:hover {
        background: #d13a52;
        color: var(--text-light);
        transform: translateY(-5px);
    }

    /* Responsive */
    @media (max-width: 991px) {
        .hero h1 {
            font-size: 2.5rem;
        }

        section {
            padding: 70px 0;
        }

        .about-content {
            grid-template-columns: 1fr;
            gap: 3rem;
        }

        .about-image {
            order: -1;
        }

        .tariff-card.featured {
            transform: scale(1);
            margin: 2rem 0;
        }

        .tariff-card.featured:hover {
            transform: translateY(-15px);
        }
    }

    @media (max-width: 767px) {
        .hero h1 {
            font-size: 2rem;
        }

        .hero .lead {
            font-size: 1.1rem;
        }

        .section-title h2 {
            font-size: 2rem;
        }

        .feature-cards {
            grid-template-columns: 1fr;
        }

        .navbar-brand {
            font-size: 1.2rem;
        }

        .footer {
            padding: 50px 0 30px;
        }
    }