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

body {
    font-family: 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: #333;
    padding-top: 140px; /* prevents content from hiding under fixed header */
}

.container {
    width: 85%;
    max-width: 1100px;
    margin: auto;
}

.navbar {
    position: fixed;
    width: 100%;
   background: #000; /* Changed to solid black */
    padding: 15px 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 85%;
    margin: auto;
}

.logo {
    height: 120px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

nav a {
    text-decoration: none;
    color: #fff; /* White text */
    font-weight: 500;
    transition: 0.3s;
}

nav a:hover {
    color: #4b9cd3;
}

.hero {
    min-height: 100vh;
    background: url('images/hero.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero-overlay {
    background: rgba(0,0,0,0.45);
    padding: 50px;
    color: white;
}

.hero h1 {
    font-size: 3.5rem;
    letter-spacing: 3px;
}

.hero p {
    margin: 20px 0;
    font-size: 1.2rem;
}

.btn-primary {
    display: inline-block;
    padding: 12px 30px;
    background: #4b9cd3;
    color: white;
    text-decoration: none;
    border-radius: 3px;
    transition: 0.3s;
}

.btn-primary:hover {
    background: #438bbb;
}

.section {
    padding: 100px 0;
}

.section.light {
    background: #f8f8f8;
}

.section.dark {
    background: #1e1e1e;
    color: white;
}

.section.center {
    text-align: center;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.card {
    padding: 30px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
}

footer {
    background: #111;
    color: #aaa;
    padding: 30px 0;
    text-align: center;
}

/* MOBILE RESPONSIVE */
@media (max-width: 768px) {

    .nav-container {
        flex-direction: column;
        align-items: center;
    }

    .logo {
        height: 80px;
        margin-bottom: 10px;
    }

    nav ul {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .hero {
        height: auto;
        padding: 100px 20px;
    }

    .hero h1 {
        font-size: 2rem;
        line-height: 1.3;
    }

    .hero-overlay {
        padding: 30px 20px;
    }

    .section {
        padding: 60px 20px;
    }

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

    .container {
        width: 95%;
    }
}