* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Fira Code', monospace;
    color: #c9d1d9;
    background: #0d1117;
}
a { text-decoration: none; color: #58a6ff; }
ul { list-style: none; }
.container {
    display: grid;
    grid-template-areas:
        "header header"
        "sidebar main"
        "footer footer"; 
    grid-template-columns: 250px 1fr;
    grid-template-rows: auto 1fr auto; 
    min-height: 100vh;
}
header {
    grid-area: header;
    background: #161b22;
    border-bottom: 1px solid #30363d;
    display: flex;
    align-items: center;
    justify-content: space-between; 
    padding: 0.5rem 1rem;
    position: sticky;
    top: 0;
    z-index: 10;
    height: 50px;
}
header .logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #ffffff;
    
}

.header-toggle-button {
    background-color: #58a6ff;
    color: #fff;
    border: none;
    border-radius: 0.25rem;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    cursor: pointer;
    display: none; 
    
}
.header-toggle-button:hover {
    background-color: #79c0ff;
}

nav.top-nav ul {
    display: flex;
    gap: 1rem;
}
aside.sidebar {
    grid-area: sidebar;
    background: #161b22;
    border-right: 1px solid #30363d;
    padding: 1rem;
    position: sticky;
    top: 50px;
    max-height: calc(100vh - 50px); 
    overflow-y: auto;
    
    z-index: 5;
    display: block; 
    transition: transform 0.3s ease-out; 
    position: relative; 
}

.sidebar h2 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: #58a6ff;
}
.sidebar ul li + li { margin-top: 0.75rem; }
.sidebar ul li a:hover { color: #79c0ff; }

.close-sidebar-button {
    background: none;
    border: none;
    color: #c9d1d9;
    font-size: 1.5rem;
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    cursor: pointer;
    z-index: 101; 
    padding: 0.5rem;
    line-height: 1; 
    display: none; 
}
.close-sidebar-button:hover {
    color: #58a6ff;
}

main {
    grid-area: main;
    padding: 1.5rem;
    overflow-y: auto; /* Changed from 'scroll' to 'auto' for better control with JS */
    max-height: calc(100vh - 50px);
    position: relative; /* Added for positioning the scroll-to-top button within main */
}

main {
    scrollbar-width: none; 
    -ms-overflow-style: none;   
}
main::-webkit-scrollbar {
    display: none;
}

.card {
    background: #161b22;
    border-radius: 0.5rem;
    border: 1px solid #30363d;
    padding: 1rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.card h3 {
    margin-bottom: 0.5rem;
    color: #ffffff;
}
.card p { line-height: 1.6; }
#blog-viewer {
    margin-top: 2rem;
    padding: 1rem;
    background: #161b22;
    border: 1px solid #30363d;
    border-radius: 0.5rem;
    overflow: hidden;
    transition: opacity 0.5s ease, transform 0.5s ease;
    opacity: 0;
    transform: translateY(10px);

}
#blog-viewer.visible {
    opacity: 1;
    transform: translateY(0);
}
#recent-posts {
    display: flex; 
    flex-wrap: wrap;
    gap: 0.75rem;
    border-top: 1px solid #30363d;
    padding-top: 0.75rem;
}
#recent-posts li {
    white-space: nowrap;
    border-right: 1px solid #30363d; 
    padding-right: 0.75rem;
    margin-right: 0.75rem;
}
#recent-posts li:last-child {
    border-right: none;
    margin-right: 0;
    padding-right: 0;
}
footer {
    grid-area: footer; 
    background: #161b22;
    border-top: 1px solid #30363d;
    text-align: center;
    padding: 1rem;
    font-size: 0.9rem;
    align-self: end;
}


@media (max-width: 768px) {
    .container {
        grid-template-areas:
            "header"
            "main"
            "footer"; 
        grid-template-columns: 1fr;
    }
    header {
        position: relative; 
        justify-content: center; 
    }
    header .logo {
        margin: 0 auto; 
    }
    .header-toggle-button {
        display: block; 
        position: absolute; 
        left: 1rem;
        margin-left: 0; 
    }
    nav.top-nav {
        position: absolute; 
        top: 50px; 
        left: 0;
        width: 100%;
        background: #161b22;
        border-top: 1px solid #30363d;
        padding: 1rem;
        display: none; 
        z-index: 9; 
    }
    nav.top-nav.show {
        display: block; 
    }
    nav.top-nav ul { 
        flex-direction: column;
        gap: 0.5rem;
    }

    aside.sidebar { 
        position: fixed; 
        top: 0;
        left: -50vw; 
        width: 50vw; 
        height: 100vh; 
        border-right: none; 
        border-top: none; 
        z-index: 100; 
        transition: transform 0.3s ease-out; 
        padding-top: 60px; 
        display: block; 
        max-height: 100vh; 
        
        border-top-right-radius: 0.5rem;
        border-bottom-right-radius: 0.5rem;
    }
    aside.sidebar.open {
        transform: translateX(100%); 
    }
    .close-sidebar-button {
        display: block; 
    }

    
    #recent-posts {
        flex-direction: column; 
        gap: 0.5rem; 
    }
    #recent-posts li {
        border-right: none; 
        padding-right: 0;
        margin-right: 0;
    }
}


.search-box {
    margin: 1rem 0;
}
.search-box input {
    width: 100%;
    padding: 0.5rem;
    background: #0d1117;
    border: 1px solid #30363d;
    color: #c9d1d9;
    border-radius: 0.25rem;
}
#scrollToTopBtn {
    position: absolute; /* Changed from fixed to absolute */
    bottom: 20px;
    right: 20px;
    background-color: #58a6ff;
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
    cursor: pointer;
    display: none;
    z-index: 100;
}

* {
    scrollbar-width: none; 
    -ms-overflow-style: none; 
}

*::-webkit-scrollbar {
    display: none;
}