:root {
    --primary: #0f172a;
    --secondary: #1e293b;
    --accent: #3b82f6;
    --light: #f8fafc;
}

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

body {
    font-family: 'Segoe UI', sans-serif;
    background: var(--primary);
    color: var(--light);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
}

header {
    background: rgba(15,23,42,0.95);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

nav ul {
    list-style: none;
    display: flex;
    gap: 25px;
}

nav a {
    color: var(--light);
    text-decoration: none;
    font-weight: 500;
}

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

.hero {
    padding: 120px 20px;
    text-align: center;
    background: linear-gradient(135deg,#0f172a,#1e293b);
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 20px;
}

.btn {
    background: var(--accent);
    color: #fff;
    padding: 14px 30px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 20px;
    font-weight: 600;
}

.section {
    padding: 80px 0;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(250px,1fr));
    gap: 40px;
    margin-top: 40px;
}

.card {
    background: var(--secondary);
    padding: 30px;
    border-radius: 8px;
}

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

footer {
    background: #020617;
    padding: 40px 0;
    text-align: center;
    margin-top: 60px;
}

footer a {
    color: var(--accent);
    text-decoration: none;
}

@media(max-width:768px){
    nav ul {
        flex-direction: column;
        gap: 15px;
    }
    .hero h1 {
        font-size: 30px;
    }
}