body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: #f4f7fb;
    color: #222;
}

/* NAVBAR */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
    background: #0b1220;
    color: #fff;
}

.navbar nav a {
    color: #cbd3e0;
    text-decoration: none;
    margin-left: 25px;
    transition: 0.2s;
}

.navbar nav a:hover,
.navbar nav .active {
    color: #4da3ff;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

/* HERO */
.hero {
    height: 80vh;
    background: linear-gradient(rgba(0,0,0,0.55), rgba(0,0,0,0.55)),
                url('https://images.unsplash.com/photo-1518770660439-4636190af475?q=80') center/cover no-repeat;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    text-align: center;
    padding: 0 20px;
}

.hero h1 {
    font-size: 2.8rem;
}

.btn-primary {
    display: inline-block;
    margin-top: 20px;
    padding: 12px 24px;
    background: #4da3ff;
    color: #fff;
    border-radius: 6px;
    text-decoration: none;
    font-size: 1.1rem;
    transition: 0.3s;
}

.btn-primary:hover {
    background: #1c6ed0;
}

/* FEATURES */
.features {
    padding: 60px 40px;
    text-align: center;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.feature-card {
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 8px 18px rgba(0,0,0,0.08);
    transition: transform 0.2s;
}

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

/* PRODUCT PAGE */
.product-section {
    padding: 60px 40px;
    text-align: center;
}

.product-box {
    background: #fff;
    padding: 35px;
    border-radius: 12px;
    width: 100%;
    max-width: 600px;
    margin: 30px auto;
    box-shadow: 0 8px 18px rgba(0,0,0,0.08);
}

/* CONTACT PAGE */
.contact-section {
    padding: 60px 40px;
    text-align: center;
}

.contact-email a {
    font-size: 1.4rem;
    color: #0b1220;
    font-weight: bold;
}

/* CONTACT HERO */
.contact-hero {
    height: 50vh;
    background: linear-gradient(rgba(0,0,0,0.55), rgba(0,0,0,0.55)),
        url('https://images.unsplash.com/photo-1588702547919-26089e690ecc?q=80') center/cover no-repeat;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
    padding: 0 20px;
}

.contact-hero h1 {
    font-size: 2.4rem;
}

/* ABOUT HERO */
.about-hero {
    height: 50vh;
    background: linear-gradient(rgba(0,0,0,0.55), rgba(0,0,0,0.55)),
        url('https://images.unsplash.com/photo-1519389950473-47ba0277781c?q=80') center/cover no-repeat;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
    padding: 0 20px;
}

.about-hero h1 {
    font-size: 2.4rem;
}

/* ABOUT CONTENT */
.about-section {
    padding: 60px 40px;
    max-width: 900px;
    margin: auto;
}

.about-section ul {
    list-style: square;
    padding-left: 25px;
}


/* FOOTER */
.footer {
    text-align: center;
    padding: 20px;
    background: #0b1220;
    color: #cbd3e0;
    margin-top: 40px;
}