* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

/* ===== BODY ===== */
body {
    background: #ffffff;
    color: #111;
    line-height: 1.6;
}

/* ===== HEADER ===== */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 25px;
    background: #0b1f3a; /* dark blue */
    color: white;
    position: sticky;
    top: 0;
    z-index: 1000;
}

/* logo */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo img {
    height: 45px;
}

.logo h1 {
    font-size: 16px;
    font-weight: 600;
}

/* nav */
nav a {
    color: white;
    text-decoration: none;
    margin: 0 12px;
    font-size: 14px;
    transition: 0.3s;
}

nav a:hover {
    color: #4da3ff;
}

/* mobile menu icon */
.menu {
    display: none;
    font-size: 26px;
    cursor: pointer;
}

/* ===== HERO SECTION ===== */
.hero {
    height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, #0b1f3a, #1c4e80);
    color: white;
    padding: 20px;
}

.hero h2 {
    font-size: 32px;
    margin-bottom: 10px;
}

.hero p {
    font-size: 16px;
    max-width: 600px;
    margin: auto;
}

/* button */
.btn {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 18px;
    background: #4da3ff;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: 0.3s;
}

.btn:hover {
    background: #2f7fd1;
}

/* ===== SECTIONS ===== */
section {
    padding: 60px 20px;
    max-width: 1000px;
    margin: auto;
}

section h2 {
    text-align: center;
    margin-bottom: 25px;
    color: #0b1f3a;
}

/* ===== ABOUT ===== */
#about p {
    text-align: center;
    max-width: 800px;
    margin: auto;
    font-size: 15px;
}

/* ===== SERVICES ===== */
.grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 20px;
}

.card {
    background: #f4f7fb;
    padding: 20px;
    border-left: 4px solid #0b1f3a;
    border-radius: 6px;
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.card h3 {
    margin-bottom: 10px;
    color: #0b1f3a;
}

/* ===== PARTNER ===== */
#partner p {
    text-align: center;
    font-size: 16px;
}

/* ===== CONTACT ===== */
#contact p {
    text-align: center;
    font-size: 15px;
    line-height: 1.8;
}

/* ===== FOOTER ===== */
footer {
    text-align: center;
    padding: 20px;
    background: #0b1f3a;
    color: white;
    margin-top: 40px;
}

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

    nav {
        display: none;
        flex-direction: column;
        background: #0b1f3a;
        position: absolute;
        top: 65px;
        right: 0;
        width: 200px;
        padding: 10px;
    }

    nav a {
        margin: 10px 0;
        display: block;
    }

    nav.active {
        display: flex;
    }

    .menu {
        display: block;
    }

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

    .hero h2 {
        font-size: 24px;
    }
}