style.css

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
    color: #343a40;
    line-height: 1.7;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

header  {
    background-color: #007bff; /* Primary Blue */
    color: #fff;
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);position: fixed; /* Make header sticky */
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    transition: background-color 0.3s ease, padding 0.3s ease; /* Smooth transition for changes */
}

header.scrolled {
    background-color: #007bff; /* Darker background when scrolled */
    padding: 10px 0; /* Reduced padding when scrolled */
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

header.scrolled .logo a,
header.scrolled nav ul li a {
    color: #fff; /* Change text color to white when scrolled */
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    margin: 0;
    font-size: 2.2rem;
}

header h1 a {
    color: #fff;
    text-decoration: none;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 25px; /* Space between nav items */
}

nav ul li a {
    text-decoration: none;
    color: #343a40; /* Dark gray for text */
    font-weight: 500;
    font-size: 1.1rem;
    transition: color 0.3s ease; 
    position: relative;
    overflow: hidden; /* Hide the underline until hover */
}


nav ul li a:hover {
    color: #007bff; /* Blue on hover */
}

nav ul li a span {
    position: relative;
    z-index: 1; /* Ensure text is above the pseudo-element */
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px; /* Height of the underline */
    background-color: #007bff; /* Underline color */
    transform: translateX(-100%); /* Start off-screen to the left */
    transition: transform 0.3s ease-out; /* Smooth transition for the underline */
    z-index: 0; /* Place it below the text */
}

nav ul li a:hover::after {
    transform: translateX(0); /* Slide in from the left on hover */
}

nav ul li a.active::after {
    transform: translateX(0);
    background-color: #28a745;
}

main {
    padding: 40px 0;
}

section {
    background-color: #fff;
    margin-bottom: 30px;
    padding: 40px 0; /* Adjust padding for sections */
}

section:last-of-type {
    margin-bottom: 0;
}

h2, h3 {
    color: #007bff;
    text-align: center;
    margin-bottom: 30px;
    font-weight: 600;
}

h2 {
    font-size: 3rem;
}

h3 {
    font-size: 2.2rem;
    position: relative;
    padding-bottom: 10px;
}

h3::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: #007bff;
}

.page-hero {
    background: linear-gradient(to right, #007bff, #0056b3);
    color: #fff;
    padding: 60px 0;
    margin-bottom: 40px;
    text-align: center;
}

.page-hero h2 {
    font-size: 3rem;
    color: #fff;
    margin-bottom: 15px;
}

.page-hero p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto;
    opacity: 0.9;
}

.cta-section {
    background: url('https://via.placeholder.com/1500x400?text=Learn+Anything') no-repeat center center/cover; /* Placeholder background image */
    color: #fff;
    padding: 80px 0;
    text-align: center;
    margin-top: 40px; /* Space from previous section */
    position: relative;
    overflow: hidden; /* Ensure pseudo-element doesn't overflow */
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6); /* Dark overlay */
    z-index: 1; 
}

.cta-section .container {
    position: relative; 
    z-index: 2;
}

.cta-section h2 {
    color: #fff; /* White heading */
    margin-bottom: 20px;
    font-size: 2.8rem;
}

.cta-section p {
    font-size: 1.3rem;
    max-width: 700px;
    margin: 0 auto 30px auto;
    line-height: 1.6;
}

.cta-section .btn {
    padding: 15px 30px;
    font-size: 1.2rem;
    border-radius: 50px; /* Pill-shaped button */
    background-color: #28a745; /* Green color for CTA */
    border-color: #28a745;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.cta-section .btn:hover {
    background-color: #218838;
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.3);
}

.hero {
    text-align: center;
    background: linear-gradient(to right, #007bff, #0056b3); /* Gradient Blue */
    color: #fff;
    padding: 80px 0;
    margin-bottom: 40px; /* More space below hero */
    border-radius: 0; /* Remove border-radius here, applied to general sections */
    box-shadow: none; /* Remove box-shadow */
}

.hero h2 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: #fff; /* Ensure white text */
}

.hero p {
    font-size: 1.4rem;
    max-width: 800px;
    margin: 0 auto 40px auto;
    opacity: 0.9;
}

.hero button, .btn {
    background-color: #28a745; /* Green Call to Action */
    color: #fff;
    border: none;
    padding: 15px 30px;
    font-size: 1.2rem;
    border-radius: 50px; /* Pill shape */
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    text-decoration: none; /* For .btn class */
    display: inline-block; /* For .btn class */
}

.hero button:hover, .btn:hover {
    background-color: #218838;
    transform: translateY(-2px);
}

ul {
    list-style: disc; /* Default disc bullet points */
    margin-left: 20px;
    margin-bottom: 20px;
}

ul li {
    margin-bottom: 10px;
    font-size: 1.1rem;
    line-height: 1.5;
}

.featured-courses .course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.course-card {
    background-color: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.course-card img {
    max-width: 100%;
    border-radius: 8px;
    margin-bottom: 15px;
    height: auto; 
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.course-card h4 {
    color: #007bff;
    font-size: 1.6rem;
    margin-bottom: 15px;
}

.course-card p {
    font-size: 1rem;
    color: #555;
    margin-bottom: 25px;
}

.testimonials {
    background-color: #e9ecef; /* Light Grey background */
}

.testimonials .testimonial-card {
    background-color: #fff;
    border-left: 5px solid #007bff;
    padding: 25px;
    margin-top: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    font-style: italic;
    position: relative;
}

.testimonials .testimonial-card p {
    font-size: 1.1rem;
    color: #495057;
    margin-bottom: 15px;
}

.testimonials .testimonial-card span {
    display: block;
    text-align: right;
    font-weight: bold;
    color: #007bff;
}

footer {
    text-align: center;
    padding: 30px 0;
    background-color: #343a40; /* Darker Grey */
    color: #e9ecef;
    font-size: 0.95rem;
}

.text-center {
    text-align: center;
}

.text-center {
    text-align: center;
}

.section-content {
    background-color: #fff;
    padding: 40px; /* Consistent inner padding */
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.contact-form-section .section-content {
    max-width: 700px;
    margin: 0 auto; /* Center the form content */
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px; /* Space between form groups */
    margin-top: 30px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: bold;
    margin-bottom: 8px;
    color: #343a40;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    padding: 12px;
    border: 1px solid #ced4da;
    border-radius: 5px;
    font-size: 1rem;
    width: 100%; /* Full width within its container */
    box-sizing: border-box; /* Include padding and border in the element's total width and height */
}

.form-group textarea {
    resize: vertical; /* Allow vertical resizing */
}

.contact-form .btn {
    align-self: flex-start; /* Align button to the left within the flex container */
    margin-top: 10px; /* Space above the button */
}

/* Back to Top Button Styles */
#backToTopBtn {
    display: none; /* Hidden by default */
    position: fixed; /* Fixed/sticky position */
    bottom: 30px; /* Place the button at the bottom of the page */
    right: 30px; /* Place the button 30px from the right */
    z-index: 99; /* Make sure it does not overlap */
    border: none; /* Remove borders */
    outline: none; /* Remove outline */
    background-color: #007bff; /* Set a background color */
    color: white; /* Text color */
    cursor: pointer; /* Add a mouse pointer on hover */
    padding: 15px; /* Some padding */
    border-radius: 10px; /* Rounded corners */
    font-size: 18px; /* Increase font size */
    transition: background-color 0.3s, transform 0.3s; /* Smooth transition */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2); /* Add a subtle shadow */
}

#backToTopBtn:hover {
    background-color: #0056b3; /* Darker background on hover */
    transform: translateY(-2px); /* Slightly lift button on hover */
}