body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #a9d1f6; /* Lightest Blue */
}

.app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.app-header {
    background-color: #0244a1; /* Dark Blue */
    color: white;
    padding: 1rem;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.app-header h1 {
    margin: 0;
    font-size: 1.5rem;
}

.app-header nav ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
}

.app-header nav ul li {
    margin-left: 1.5rem;
}

.app-header nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.app-header nav ul li a:hover {
    color: #17d4fc; /* Bright Cyan */
}

.app-main {
    flex-grow: 1;
}

.hero {
    background-image: url('https://source.unsplash.com/random/1600x900/?creativity');
    background-size: cover;
    background-position: center;
    height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 2rem;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.cta-button {
    background-color: #0993f3; /* Mid-tone Blue */
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.cta-button:hover {
    background-color: #0763e5; /* Slightly Darker Blue */
}

.main-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.main-content h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #0234d2; /* Bright Blue */
}

.main-content p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #0763e5; /* Medium Blue */
}

.app-footer {
    background-color: #0244a1; /* Dark Blue */
    color: white;
    text-align: center;
    padding: 1rem;
}