body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
}

header {
    background: linear-gradient(90deg, #e0eafc, #cfdef3, #e0eafc);
    color: #333;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: transform 0.3s ease-in-out;
}

header .logo {
    height: 40px;
    transition: transform 0.3s ease-in-out;
}

header .logo:hover {
    transform: scale(1.1); /* Enlarge on hover */
}

header .logo:active {
    animation: pop-up 0.3s ease-in-out; /* Pop-up animation on click */
}

@keyframes pop-up {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
    }
}

header .search-container {
    display: flex;
    align-items: center;
    flex-grow: 1;
    justify-content: center;
}

header input[type="text"] {
    padding: 10px;
    border-radius: 5px;
    border: none;
    width: 200px;
    margin-right: 10px;
}

header .search-icon {
    font-size: 1.5em;
}

header .clock {
    font-size: 1.5em;
    margin-left: -10px; /* Adjust position slightly to the left */
}

h1 {
    text-align: center;
    margin: 20px 0;
}

main {
    display: flex;
    flex-direction: column; /* Ensure vertical stacking */
    padding: 20px;
    margin-top: 80px; /* Adjust for fixed header */
}

.intro-section {
    margin-bottom: 20px;
    padding: 20px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.content-section {
    display: flex;
    flex-direction: column; /* Ensure vertical stacking */
    align-items: center;
    margin: 20px 0;
    padding: 20px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.content-section img {
    max-width: 200px;
    border-radius: 10px;
    margin-bottom: 20px; /* Add margin to separate image from text */
}

.content-section h3, .content-section h4 {
    margin-top: 0;
}

.content-section ul {
    padding-left: 20px;
}

.content-section ul li {
    margin: 5px 0;
}

.command-box {
    background-color: #e0e0e0;
    padding: 10px;
    border-radius: 5px;
    position: relative;
    margin: 10px 0;
}

.command-box pre {
    margin: 0;
}

.copy-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 5px 10px;
    background-color: #56ab2f;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.copy-btn:hover {
    background-color: #3e8e41;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

table, th, td {
    border: 1px solid #ddd;
}

th, td {
    padding: 10px;
    text-align: left;
}

th {
    background-color: #f2f2f2;
}

.library-section {
    flex: 2;
}

.library-section h2 {
    text-align: center;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 20px;
}

.grid-item {
    background-color: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    text-align: left;
    transition: transform 0.2s, box-shadow 0.2s;
    border-left: 5px solid #56ab2f;
    text-decoration: none;
    color: #333;
}

.grid-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.grid-item h2 {
    margin-top: 0;
}

.grid-item ul {
    padding-left: 20px;
}

.grid-item ul li {
    margin: 5px 0;
}

.grid-item ul li strong {
    font-weight: bold;
}

header.hidden {
    transform: translateY(-100%);
    transition: transform 0.3s ease-in-out;
}

footer {
    background: linear-gradient(90deg, #e0eafc, #cfdef3, #e0eafc);
    color: #333;
    padding: 20px; /* Increase padding for larger footer */
    text-align: center;
    position: relative; /* Ensure footer is at the bottom of the page */
    width: 100%;
    transition: transform 0.3s ease-in-out;
}

footer a {
    color: #333;
    text-decoration: none;
}

footer.hidden {
    transform: translateY(100%);
}

.navigation-arrows {
    display: flex;
    justify-content: space-between;
    margin: 20px 0;
}

.navigation-arrows .button {
    padding: 10px 20px;
    background-color: #56ab2f;
    color: #fff;
    border: none;
    border-radius: 5px;
    text-decoration: none;
    font-size: 1.2em;
    transition: background-color 0.3s ease;
}

.navigation-arrows .button:hover {
    background-color: #3e8e41;
}

.video-container {
    margin: 20px 0;
    text-align: center;
}

#ram-calculator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

#ram-calculator label {
    font-weight: bold;
}

#ram-calculator input {
    padding: 5px;
    border-radius: 5px;
    border: 1px solid #ccc;
}

#ram-calculator button {
    padding: 10px 20px;
    background-color: #56ab2f;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#ram-calculator button:hover {
    background-color: #3e8e41;
}

#ram-result {
    margin-top: 10px;
    font-weight: bold;
}