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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #1a1a1a;
}

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

header {
    background: #0f172a;
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    color: #fff;
    font-weight: 700;
    font-size: 1.5rem;
}

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

nav a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
}

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

.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
}

.section {
    padding: 80px 0;
}

.section h2 {
    text-align: center;
    margin-bottom: 50px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.card {
    padding: 30px;
    background: #f4f4f4;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

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

.dark {
    background: #0f172a;
    color: #fff;
}

.stats {
    display: flex;
    justify-content: space-around;
    margin-top: 40px;
}

.cta {
    background: #2563eb;
    color: #fff;
    text-align: center;
    padding: 60px 0;
}

.btn-primary {
    background: #2563eb;
    color: #fff;
    padding: 12px 25px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
}

.btn-secondary {
    background: transparent;
    border: 1px solid #fff;
    color: #fff;
    padding: 12px 25px;
    border-radius: 6px;
    text-decoration: none;
}

form {
    max-width: 600px;
    margin: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

input, textarea {
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
}

footer {
    background: #111;
    color: #aaa;
    padding: 20px 0;
    text-align: center;
}

@media (max-width: 768px) {
    .stats {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    nav ul {
        flex-direction: column;
        gap: 10px;
    }
}