body {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    background-color: #ffffff;
    color: #333;
}

header {
    background: #1e63bb;
    color: white;
    padding: 20px 0;
    text-align: center;
}

h1 {
    margin: 0;
    font-size: 2.5em;
}

nav {
    margin: 20px 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 10px;
    font-weight: bold;
    transition: opacity 0.3s ease;
}

nav a:hover {
    text-decoration: underline;
    opacity: 0.8;
}

.container {
    width: 80%;
    margin: auto;
    overflow: hidden;
    max-width: 1200px;
}

.section {
    padding: 20px;
    margin: 20px 0;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.footer {
    text-align: center;
    padding: 20px 0;
    background: #1e63bb;
    color: white;
    position: relative;
    bottom: 0;
    width: 100%;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        width: 90%;
    }

    nav {
        gap: 15px;
    }

    nav a {
        margin: 0 8px;
    }

    h1 {
        font-size: 2.2em;
    }
}

@media (max-width: 768px) {
    header {
        padding: 15px 0;
    }

    h1 {
        font-size: 1.8em;
    }

    nav {
        margin: 15px 0;
        gap: 10px;
    }

    nav a {
        margin: 0 5px;
        font-size: 0.9em;
    }

    .container {
        width: 90%;
    }

    .section {
        padding: 15px;
        margin: 15px 0;
    }

    .footer {
        padding: 15px 0;
        font-size: 0.9em;
    }
}

@media (max-width: 600px) {
    header {
        padding: 12px 0;
    }

    h1 {
        font-size: 1.5em;
    }

    nav {
        margin: 12px 0;
        gap: 8px;
        flex-direction: column;
    }

    nav a {
        margin: 5px 0;
        font-size: 0.85em;
        display: block;
        padding: 8px 10px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 4px;
        transition: background 0.3s ease;
    }

    nav a:hover {
        background: rgba(255, 255, 255, 0.2);
    }

    .container {
        width: 95%;
    }

    .section {
        padding: 12px;
        margin: 12px 0;
        border-radius: 6px;
    }

    .footer {
        padding: 12px 0;
        font-size: 0.85em;
    }
}

@media (max-width: 480px) {
    header {
        padding: 10px 0;
    }

    h1 {
        font-size: 1.3em;
    }

    nav {
        margin: 10px 0;
        gap: 6px;
    }

    nav a {
        margin: 3px 0;
        font-size: 0.8em;
        padding: 6px 8px;
    }

    .container {
        width: 98%;
    }

    .section {
        padding: 10px;
        margin: 10px 0;
    }

    .footer {
        padding: 10px 0;
    }
}