/* common nav styles */
.navigation-wrapper {
    height: 10px;
    background: linear-gradient(
    135deg,
    rgba(210, 207, 212, 1),
	rgba(204, 216, 225, 1),
	rgba(102, 138, 167, 1),
	rgba(36, 80, 106, 1),
	rgba(30, 45, 79, 1),
	rgba(1, 4, 37, 1)
    );
    background-size: 300% 300%;
    animation: gradientMove 12s ease infinite;
    color: #cbcbcb;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 40px 50px;
    position: sticky;
}
                                                           /* center column */
.navigation-wrapper > .center-column > .webpages {
    display: grid;
    grid-template-columns: 1fr;
    grid-gap: 42px;
    width: 500px;
}
/* .links-wrapper */
.navigation-wrapper > .center-column > .webpages > .links-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
 /* .nav-link */
.navigation-wrapper > .center-column > .webpages > .links-wrapper > .nav-link {
    width: 95px;
    align-items: center;
}
.navigation-wrapper > .center-column > .webpages > .links-wrapper > .nav-link a {
    font-family: sans-serif;
    color: rgba(135, 122, 133, 1);
    text-decoration: none;
    transition: 0.5s;
}
.navigation-wrapper > .center-column > .webpages > .links-wrapper > .nav-link a:hover {
    color: #A7C8CD;
    letter-spacing: 2px;
}
.navigation-wrapper > .logo img {
    width: 80px;
}
@keyframes gradientMove {
  0% { background-position: 0% 25%; }
  25% { background-position: 50% 0%; }
  50% { background-position: 100% 50%; }
  75% { background-position: 50% 100%; }
  100% { background-position: 0% 50%; }
}
.heading-wrapper {
    color: rgba(135, 122, 133, 1);
    background-color: rgba(36, 80, 106, 1);
    border-bottom-left-radius: 10px;
    border-bottom-right-radius: 10px;
    width: 400px;
    padding: 10px;
    text-align: center;
    margin-top: -38px;
    margin-left: 480px;
}
.background-image-section > .sign {
    margin-top: 10px;
    margin-left: 1140px;
}
.background-image-section > .login {
    margin-top: -33px;
    margin-left: 1230px;
}
/* Style the links */
.background-image-section > .sign > a,
.background-image-section > .login > a {
    position: relative;
    display: inline-block;
    color: rgba(1, 4, 37, 1);
    text-decoration: none;
    font-size: 1.2em;
    font-weight: 800;
}
/* Animated underline */
.background-image-section > .sign > a::after,
.background-image-section > .login > a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -3px;
    width: 100%;
    height: 2px;
    background: white;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}
.background-image-section > .sign > a:hover::after,
.background-image-section > .login > a:hover::after {
    transform: scaleX(1);
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: rgba(135, 122, 133, 1);
    scroll-behavior: smooth;
    background: linear-gradient( 135deg, rgb(131, 176, 212) 0%, rgba(36, 80, 106, 1) 100%);
}
.center-column {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}
.heading-wrapper h1 {
    font-size: 2em;
    margin-bottom: 10px;
}
.lectures-container {
    padding: 40px 20px;
}
.lectures-section {
    margin-bottom: 50px;
}
.lectures-section h2 {
    font-size: 2em;
    margin-bottom: 30px;
    color: #333;
}
.lectures-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}
.lecture-card {
    background-color: rgba(204, 216, 225, 1);
    border: 1px solid rgba(204, 216, 225, 1);
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.lecture-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}
.lecture-card h3 {
    color: rgba(30, 45, 79, 1);
    margin-bottom: 15px;
    font-size: 1.5em;
}
.lecture-card p {
    color: #666;
    margin-bottom: 20px;
}
.view-btn {
    display: inline-block;
    background-color: rgba(36, 80, 106, 1);
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    transition: background-color 0.3s ease;
}
.view-btn:hover {
    background-color: #0056b3;
}
.registration-section {
    background-color: #f8f9fa;
    padding: 40px;
    border-radius: 10px;
}
.registration-section h2 {
    font-size: 2em;
    margin-bottom: 25px;
    color: #333;
}
.lecture-form {
    max-width: 500px;
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}
.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1em;
    transition: border-color 0.3s ease;
}
.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 5px rgba(0, 123, 255, 0.3);
}
.submit-btn {
    background-color: #28a745;
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.submit-btn:hover {
    background-color: #218838;
}
.course-filter {
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
}
.course-filter label {
    font-weight: 600;
    color: #333;
}
.course-filter select {
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1em;
    cursor: pointer;
}
.footer {
    background: linear-gradient(
    135deg,
    rgba(102, 138, 167, 1),
    rgba(36, 80, 106, 1),
    rgba(30, 45, 79, 1),
    rgba(1, 4, 37, 1)
    );
    animation: gradientMove 12s ease infinite;
    background-size: 300% 300%;
    position: relative;
    font-family: "Ubuntu Condensed", sans-serif;
    width: 100%;
    box-sizing: border-box;
    height: 440px ;
    margin-top: -4px;
    padding:40px 32px;
}
.footer > * {
    margin: 10px 0;
}
.footer-top {
    width: 100%;
    max-width:1180px;
    margin:0 auto;
    display:grid;
    grid-template-columns:1.6fr 1fr;
    gap:30px;
    padding-bottom:32px;
    border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand p {
    margin-top: 15px;
    margin-bottom: 15px;
}
.footer-brand img {
    width:140px;
    margin-bottom:18px;
    margin-left: 110px;
}
.footer-brand p {
    width:420px;
    line-height:1.75;
    color: rgba(135, 122, 133, 1);
}
.footer-links {
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:22px;
    margin-top: 15px;
}
.footer-column h3 {
    margin-bottom:14px;
    color: rgba(210, 207, 212, 1);
    font-size:1.05rem;
}
.footer-column a, .footer-column p {
    display:block;
    color: rgba(135, 122, 133, 1);
    text-decoration:none;
    margin-bottom:10px;
    font-size:.95rem;
    transition: 0.5s;
}
.footer-column a:hover {
    color: #A7C8CD;
    letter-spacing: 2px;
}
.footer-bottom {
    width: 100%;
    max-width:1180px;
    margin-top: 17px;
    margin-left: 50px;
    padding-top:20px;
    text-align:center;
    color:#94a3b8;
    font-size:.95rem;
}