body {
    font-family: 'Poppins', sans-serif;
    color: #2C3E50;
    background-color: #F5F1EA;
    margin: 0;
    line-height: 1.6;
}

header {
    background-color: #2C3E50;
    padding: 15px 20px;
    border-bottom: 4px solid #6BA4C7;
    position: relative;
}

#course-title {
    display: block;
    font-family: 'Kanit', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    color: #F5F1EA;
    text-align: center;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 5px;
}

#menu-toggle {
    position: absolute;
    top: 15px;
    right: 20px;
    background: none;
    border: 2px solid #F5F1EA;
    color: #F5F1EA;
    font-size: 1.5rem;
    padding: 4px 12px;
    cursor: pointer;
    font-family: 'Kanit', sans-serif;
}

#menu-toggle:hover {
    color: #6BA4C7;
    border-color: #6BA4C7;
}

nav {
    display: none;
    flex-direction: column;
    margin-top: 15px;
}

nav.open {
    display: flex;
}

nav a:link,
nav a:visited {
    color: #F5F1EA;
}

nav a {
    color: #F5F1EA;
    text-decoration: none;
    font-family: 'Kanit', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    padding: 12px;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 2px;
    border-top: 1px solid #D4B896;
}

nav a:hover {
    color: #6BA4C7;
    background-color: #1F2D3D;
}

main {
    max-width: 1100px;
    margin: 30px auto;
    padding: 0 20px;
}

h1 {
    font-family: 'Kanit', sans-serif;
    font-weight: 800;
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: 30px;
    text-transform: uppercase;
    color: #2C3E50;
}

.gallery {
    display: grid;
    grid-template-columns: 1fr;
    gap: 25px;
}

figure {
    margin: 0;
    background-color: #FFFFFF;
    border: 2px solid #2C3E50;
}

figure img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
}

figcaption {
    background-color: #2C3E50;
    color: #F5F1EA;
    font-family: 'Kanit', sans-serif;
    font-weight: 600;
    text-align: center;
    padding: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.9rem;
    border-top: 3px solid #D4B896;
}

footer {
    background-color: #2C3E50;
    color: #F5F1EA;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    font-size: 0.9rem;
    border-top: 4px solid #6BA4C7;
}

footer p {
    margin: 5px 0;
    letter-spacing: 1px;
}

#lastModified {
    color: #D4B896;
    font-family: 'Kanit', sans-serif;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}