* {
    background-color: black;
    box-sizing: border-box; 
    margin: 0;
    padding: 0;
    font-family: 'Fira Code', 'IBM Plex Mono', 'Courier New', monospace;
}

#topbar {
    border: 1px solid rgba(255, 255, 255, 0.377);
    display: flex;
    flex-direction: row;
    align-items: center; 
    height: 80px;
    width: 100%;       
}

#topbar h2 {
    color: white;
    margin-left: 1rem;
}

#topbar img {
    height: 100%;
    margin-left: auto;   
}

#sidebar {
    position: fixed;
    top: 80px;          
    left: 0;
    bottom: 0;          
    width: 20vw;
    min-width: 220px;  
    max-width: 340px;   
    border-right: 1px solid rgba(255, 255, 255, 0.2);
    padding: 1.5rem;
}

#contents {
    display: flex;
    flex-direction: column; 
    gap: 4px;
}

.contents-btn{
    background: transparent;
    color: white;
    height: 40px;
    width: 100%;        
    font-size: 14px;
    cursor: pointer;
    border-style: solid;
    border-width: 2px;
    border-color: rgb(121, 120, 120);
    transition: border-color 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
}

.contents-btn:hover {
    border-color: rgb(0, 255, 89);
    background-color: rgba(0, 255, 89, 0.178);
    transform: translateX(26px);               
}

#main-content {
    position: fixed;
    top: 80px;
    bottom: 0;
    right: 0;
    left: clamp(220px, 20vw, 340px); 
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 40px; 
    font-size: 25px;
    color: #ffffff; 
    font-family: sans-serif; 
}

.content-action-buttons {
    margin-top: 20px;
}

.action-btn {
    background-color: transparent;
    color: white;
    border: 1px solid #555;
    padding: 10px 20px;
    font-size: 20px;
    margin: 0 5px;
    width: 200px;
    cursor: pointer;
    transition: background 0.2s;
}

.action-btn:hover {
    background-color: #222;
    border-color: #fff;
}

#contact-me{
    padding-top: 14rem;
    font-size: 20px;
    font-weight: bold;
}