/* style.css */
body {
    background-color: #0b0f1c;
    color: #ffffff;
    font-family: 'IBM Plex Sans', sans-serif;
    margin: 0;
    padding: 0;
}
.container {
    max-width: 700px;
    margin: auto;
    padding: 2rem;
}
h1, h2 {
    color: #0ff;
}
.lesson-body {
    margin-top: 1rem;
    line-height: 1.6;
}
.ask {
    background-color: #111;
    border-left: 4px solid #0ff;
    padding: 1rem;
    margin-top: 2rem;
    font-style: italic;
}
.logo-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.logo-img {
    max-width: 180px;
    width: 100%;
    height: auto;
}
.main-nav {
    text-align: center;
    margin-bottom: 2rem;
}

.main-nav a {
    color: #0ff;
    text-decoration: none;
    margin: 0 1rem;
    font-weight: bold;
}

.main-nav a:hover {
    text-decoration: underline;
}
.header-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 1rem;
    gap: 2rem;
}

.logo-left {
    flex-shrink: 0;
}

.logo-img {
    max-width: 160px;
    height: auto;
}

.main-nav {
    display: flex;
    gap: 1.5rem;
    font-weight: bold;
}

.main-nav a {
    color: #0ff;
    text-decoration: none;
}

.main-nav a:hover {
    text-decoration: underline;
}
.lesson-item h2 a {
    color: #0ff;
    text-decoration: none;
}

.lesson-item h2 a:hover {
    text-decoration: underline;
}
.lesson-image, .lesson-image-full {
    text-align: center;
    margin: 20px 0;
}

.lesson-image img, .lesson-image-full img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}