:root {
    --primary-color: #0077be;
    /* Ocean Blue */
    --primary-dark: #005f9e;
    --text-color: #333333;
    --bg-color: #ffffff;
    --light-grey: #f4f7f6;
    --white: #ffffff;
    --accent-color: #00a8cc;
    /* Lighter blue for accents */
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --font-main: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--bg-color);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    height: 70px;
    display: flex;
    align-items: center;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 40px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-links li a {
    font-weight: 500;
    transition: var(--transition);
}

.nav-links li a:hover,
.nav-links li a.active {
    color: var(--primary-color);
    background-color: #e3f2fd;
    /* Light blue background for active/hover */
    padding: 5px 10px;
    border-radius: 4px;
}

.btn-download {
    background-color: var(--primary-color);
    color: var(--white) !important;
    padding: 10px 20px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.btn-download:hover {
    background-color: var(--primary-dark);
}

.lang-switcher {
    margin-left: 20px;
    font-size: 0.9rem;
    display: flex;
    gap: 5px;
}

.lang-link {
    color: #888;
    font-weight: 600;
}

.lang-link.active {
    color: var(--primary-color);
}

.lang-link:hover {
    color: var(--primary-dark);
}

/* Hero Section */
.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, #e3f2fd 0%, #ffffff 100%);
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero-container {
    display: flex;
    flex-direction: column;
    text-align: center;
    justify-content: center;
    align-items: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-content h1 {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    /* Center the buttons */
    width: 100%;
    /* Ensure container takes full width for centering */
}

.btn {
    padding: 12px 30px;
    border-radius: var(--radius);
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--e3f2fd);
    color: var(--primary-dark);
    transform: translateY(-2px);
}

.hero-image {
    display: flex;
    justify-content: center;
}

.mockup-placeholder {
    width: 300px;
    height: 600px;
    background-color: #ddd;
    border-radius: 40px;
    border: 10px solid #333;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.mockup-placeholder img {
    max-width: 100%;
    height: auto;
}

.img-fallback {
    color: #666;
    font-weight: bold;
    font-size: 1.2rem;
}


/* Features Section */
.features {
    padding: 80px 0;
    background-color: var(--white);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: var(--text-color);
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: var(--light-grey);
    padding: 40px;
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.feature-card h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.feature-card p {
    color: #666;
}

/* LAN Proxy Section */
.lan-proxy {
    padding: 80px 0;
    background-color: #f9fcff;
}

.proxy-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.steps-container ol {
    margin-left: 20px;
}

.steps-container li {
    margin-bottom: 15px;
    font-size: 1.1rem;
    color: #555;
    padding-left: 10px;
}

.proxy-visual {
    height: 300px;
    background-color: #e0e7ff;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

/* FAQ Section */
.faq {
    padding: 80px 0;
    background-color: var(--white);
}

.accordion {
    max-width: 800px;
    margin: 0 auto;
}

.accordion-item {
    border-bottom: 1px solid #eee;
}

.accordion-header {
    width: 100%;
    padding: 20px;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
    font-family: inherit;
}

.accordion-header:hover {
    color: var(--primary-color);
}

.accordion-header::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary-color);
}

.accordion-header.active::after {
    content: '-';
}

.accordion-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background-color: #fcfcfc;
}

.accordion-body p {
    padding: 20px;
    color: #666;
}

/* Footer */
.footer {
    background-color: #333;
    color: #fff;
    padding: 40px 0;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: #ccc;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--white);
}

.footer-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.footer-icon-link {
    color: #24A1DE;
    /* Telegram Blue */
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.footer-icon-link svg {
    background-color: #fff;
    border-radius: 50%;
}

.footer-icon-link:hover {
    opacity: 0.8;
    transform: translateY(-2px);
}

/* Mobile Responsive */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 4px 0;
    transition: var(--transition);
}

@media (max-width: 768px) {
    .nav-links {
        position: absolute;
        top: 70px;
        right: 0;
        height: 100vh;
        width: 100%;
        /* Full screen menu */
        background-color: var(--white);
        flex-direction: column;
        justify-content: center;
        /* Center items vertically */
        align-items: center;
        transform: translateX(100%);
        transition: transform 0.3s ease-in-out;
        box-shadow: -2px 0 5px rgba(0, 0, 0, 0.1);
        padding-bottom: 100px;
        /* Adjust for footer overlap */
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .hamburger {
        display: flex;
    }

    .hero-container,
    .proxy-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .footer-container {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}