:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --accent: #38bdf8;
    --accent-green: #22c55e;
    --warning: #fbbf24;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

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

header {
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 20px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    width: 36px;
    height: 36px;
}

.logo {
    font-weight: 700;
    font-size: 22px;
    color: var(--accent);
}

nav {
    display: flex;
    gap: 20px;
}

nav a {
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.2s;
}

nav a:hover {
    color: var(--accent);
}

.btn-primary {
    display: inline-block;
    background-color: var(--accent);
    color: var(--bg-primary);
    padding: 14px 28px;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s, opacity 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

.btn-secondary {
    background-color: var(--accent-green);
}

.container {
    padding: 80px 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.hero {
    padding: 100px 5%;
    text-align: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero h1 {
    font-size: clamp(32px, 5vw, 48px);
    margin-bottom: 20px;
}

.hero p {
    font-size: clamp(16px, 2vw, 18px);
    max-width: 700px;
    margin: 0 auto 40px;
    color: var(--text-secondary);
}

.section {
    padding: 80px 5%;
    text-align: center;
}

.section h2 {
    margin-bottom: 20px;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-box {
    background-color: var(--bg-secondary);
    padding: 30px;
    border-radius: 10px;
    text-align: left;
    transition: transform 0.2s;
}

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

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

.feature-box p {
    color: var(--text-secondary);
}

.cta-section {
    background-color: var(--bg-secondary);
    padding: 60px 5%;
    text-align: center;
}

.cta-section p {
    color: var(--text-secondary);
}

.download-box {
    background-color: var(--bg-secondary);
    padding: 30px;
    border-radius: 10px;
    margin-top: 30px;
    text-align: center;
}

.download-box h2 {
    color: var(--accent);
    margin-bottom: 10px;
}

.download-links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    margin: 20px 0;
}

.warning {
    margin-top: 20px;
    font-size: 14px;
    color: var(--warning);
}

footer {
    padding: 40px 5%;
    background-color: var(--bg-primary);
    text-align: center;
    color: var(--text-muted);
    border-top: 1px solid rgba(148, 163, 184, 0.1);
}

@media (max-width: 768px) {
    header {
        position: sticky;
        top: 0;
        min-height: 70px;
    }

    body.menu-open {
        overflow: hidden;
    }

    .hamburger {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        width: 30px;
        height: 24px;
        background: none;
        border: none;
        cursor: pointer;
        padding: 0;
        z-index: 1001;
    }

    .hamburger span {
        display: block;
        width: 100%;
        height: 3px;
        background-color: var(--text-primary);
        border-radius: 2px;
        transition: transform 0.3s, opacity 0.3s;
    }

    header.active .hamburger span:nth-child(1) {
        transform: translateY(10px) rotate(45deg);
    }

    header.active .hamburger span:nth-child(2) {
        opacity: 0;
    }

    header.active .hamburger span:nth-child(3) {
        transform: translateY(-10px) rotate(-45deg);
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -280px;
        width: 280px;
        height: 100vh;
        background-color: var(--bg-secondary);
        flex-direction: column;
        padding: 80px 30px 30px;
        gap: 0;
        transition: right 0.3s ease;
        border-left: 1px solid rgba(148, 163, 184, 0.1);
    }

    header.active .nav-menu {
        right: 0;
    }

    .nav-menu a {
        padding: 15px 0;
        border-bottom: 1px solid rgba(148, 163, 184, 0.1);
        font-size: 18px;
    }

    .overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }

    .overlay.active {
        display: block;
    }

    .hero {
        padding: 70px 5%;
    }

    .section {
        padding: 60px 5%;
    }

    .features {
        grid-template-columns: 1fr;
    }

    .cta-section {
        padding: 50px 5%;
    }

    .container {
        padding: 60px 5%;
    }

    .download-links {
        flex-direction: column;
    }

    .btn-primary {
        width: 100%;
        text-align: center;
    }
}

@media (min-width: 769px) {
    .hamburger {
        display: none;
    }

    .overlay {
        display: none !important;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 28px;
    }

    .feature-box {
        padding: 20px;
    }

    .download-box {
        padding: 20px;
    }
}