body {
    font-family: 'Roboto', sans-serif;
    background-color: #F8F9FA;
}

.navbar {
    background-color: #FFFFFF;
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}

.hero {
    background-image: url('https://picsum.photos/seed/calendar-hero/1600/400');
    background-size: cover;
    background-position: center;
    color: white;
    text-align: center;
    padding: 100px 0;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.btn-primary {
    background-color: #4285F4;
    border-color: #4285F4;
    border-radius: 0.5rem;
    padding: 10px 20px;
    font-weight: 500;
}

.btn-primary:hover {
    background-color: #3367D6;
    border-color: #3367D6;
}

.calendar-placeholder {
    background-color: #FFFFFF;
    border-radius: 0.5rem;
    padding: 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
    text-align: center;
}