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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, sans-serif;
    background: #10131a;
    color: white;
    line-height: 1.6;
}

.hero {
    background:
        linear-gradient(rgba(0,0,0,0.65), rgba(0,0,0,0.75)),
        url('images/banner.jpg');
    background-size: cover;
    background-position: center;
    min-height: 100vh;
}

.overlay {
    min-height: 100vh;
    padding: 30px;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 230px;
    width: 580px;
    display: block;
}

.nav-links a {
    color: white;
    text-decoration: none;
    margin-left: 20px;
    transition: 0.2s;
}

.nav-links a:hover {
    color: #5ec8ff;
}

.hero-content {
    max-width: 700px;
    margin-top: 140px;
}

.hero-content h1 {
    font-size: 72px;
    margin-bottom: 20px;
}

.tagline {
    font-size: 22px;
    color: #d0d0d0;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.btn {
    padding: 15px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    transition: 0.2s;
}

.primary {
    background: #5ec8ff;
    color: black;
}

.primary:hover {
    background: #8ad9ff;
}

.secondary {
    background: #1e293b;
    color: white;
}

.secondary:hover {
    background: #334155;
}

section {
    padding: 80px 10%;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 42px;
    margin-bottom: 10px;
}

.section-title p {
    color: #b8b8b8;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
}

.card {
    background: #1b2230;
    padding: 30px;
    border-radius: 14px;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.05);
}

.card h3 {
    color: #8ad9ff;
    margin-bottom: 10px;
}

.card p {
    font-size: 28px;
    font-weight: bold;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.feature {
    background: #1b2230;
    padding: 30px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.05);
}

.feature h3 {
    margin-bottom: 15px;
    color: #8ad9ff;
}

.feature p {
    color: #d0d0d0;
}

.download-box {
    text-align: center;
}

.large {
    display: inline-block;
    margin: 10px;
    font-size: 18px;
}

footer {
    text-align: center;
    padding: 40px 20px;
    background: #0b0f16;
    color: #888;
}

.footer-small {
    margin-top: 10px;
    font-size: 14px;
}

@media(max-width: 768px) {

    .hero-content h1 {
        font-size: 48px;
    }

    .tagline {
        font-size: 18px;
    }

    nav {
        flex-direction: column;
        gap: 15px;
    }

    .nav-links a {
        margin: 0 10px;
    }

}