/* General Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Typography */
body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.75;
    color: #333;
    background-color: #f9f9f9;
    padding: 20px;
}

h1, h2, p {
    margin-bottom: 20px;
}

/* Header */
#main-header {
    background: linear-gradient(to right, #2c3e50, #4ca1af);
    color: #fff;
    padding: 20px 0;
    text-align: center;
}

.site-title {
    margin: 0;
    font-size: 3rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.7);
}

/* Navigation */
#main-nav {
    margin-top: 20px;
}

.nav-list {
    list-style: none;
    display: flex;
    justify-content: center;
}

.nav-item {
    margin: 0 20px;
}

.nav-link {
    text-decoration: none;
    color: #fff;
    font-size: 1.2rem;
    padding: 5px 10px;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.nav-link:hover, .nav-link:focus {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Main Content */
#content {
    background-color: #fff;
    padding: 40px;
    margin-top: 30px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    border-radius: 8px;
}

.content-section {
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.2rem;
    color: #333;
    border-bottom: 4px solid #4db8ff;
    padding-bottom: 15px;
    margin-bottom: 25px;
}

.section-description {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.tools-list {
    list-style-type: square;
    margin-left: 20px;
}

.tool-item {
    margin-bottom: 15px;
}

/* Footer */
#main-footer {
    background: linear-gradient(to right, #2c3e50, #4ca1af);
    color: #fff;
    text-align: center;
    padding: 20px 0;
    position: relative;
    width: 100%;
}

.footer-text {
    margin: 0;
    font-size: 1rem;
}

/* Media Queries */
@media (max-width: 768px) {
    .nav-list {
        flex-direction: column;
        align-items: center;
    }

    .nav-item {
        margin-bottom: 20px;
    }

    .site-title {
        font-size: 2.5rem;
    }

    #content {
        padding: 20px;
        box-shadow: none;
    }
}