body {
  margin: 0;
  font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
  color: #2b2b2b;
  background: #f9fafc;
  line-height: 1.6;
}

.layout {
  display: flex;
  justify-content: stretch;
  height: 100vh;
  max-width: 75%;
  margin: 0 auto;
  background: #fff;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.05);
  border-radius: 10px;
  overflow: hidden;
  margin: 0 auto;   

}


.sidebar {
  width: 25%;
  background: #fdfdfd;
  border-right: 1px solid #e4e6eb;
  padding: 1.5rem 1rem;
  overflow-y: auto;
  box-shadow: inset -1px 0 0 rgba(0, 0, 0, 0.03);
  
}

.site-title {
  font-size: 1.3rem;
  font-weight: 700;
  text-align: center;
  color: #222;
  margin-bottom: 1.8rem;
}

.menu-toggle {
  background: #f4f5f7;
  border: none;
  width: 100%;
  text-align: left;
  font-weight: 600;
  font-size: 1rem; 
  padding: 0.7rem 1rem;
  border-radius: 8px;
  margin-top: 0.3rem;
  cursor: pointer;
  color: #575757;
  transition: background 0.25s ease, transform 0.2s ease;
}

.menu-toggle:hover {
  background: #e8eaed;
  transform: translateX(3px);
}

.menu-list {
  padding-left: 0;
  margin: 0.4rem 0 0 0;
  list-style: none;
  overflow: hidden;
  max-height: 1000px;       
  opacity: 1;
}


.menu-list.closed {
  max-height: 0;
  opacity: 0;
  padding: 0;             
}

.menu-list a {
  text-decoration: none;
  color: #0066cc;
  display: block;
  padding: 0.45rem 0.8rem;
  border-radius: 6px;
  transition: all 0.25s ease;
  font-weight: 500;
}

.menu-list a:hover {
  background: #eef5ff;
  color: #004c99;
}

.menu-list a.active {
  background: linear-gradient(135deg, #0077ff, #00aaff);
  color: #fff;
  font-weight: 550;
}


.content {
  flex: 1;
  padding: 3rem 4rem;
  background: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  overflow-y: auto;
}


article {
  width: 100%;
  max-width:100%;
}


.article-img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.5rem auto;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25); 
}


article h1 {
  font-size: 2.1rem;
  color: #111;
  margin-top: 0;
  text-align: center;
  margin-bottom: 1.2rem;
  font-weight: 700;
}

article h2 {
  color: #222;
  margin-top: 2rem;
  border-left: 4px solid #0077ff;
  padding-left: 0.5rem;
  font-size: 1.2rem;
}

article p, article ul {
  font-size: 1rem;
  color: #444;
}


header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: none; /* remove limit */
  margin: 0 0 1.5rem 0;
  padding: 0 2rem; /* pulls them in from edges */
  box-sizing: border-box;
}

.sidebar-nav-buttons {
  display: flex;
  justify-content: space-between;
  margin: 1rem 0;
}

.nav-btn {
  padding: 0.5rem 1rem;
  background-color: #1e82ff;
  color: white;
  text-decoration: none;
  border-radius: 4px;
  text-align: center;
}

.nav-btn:hover {
  background-color: #145abf;
}


.nav-btn { 
  text-decoration: none;
  background: linear-gradient(135deg, #0077ff, #00aaff);
  color: white;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  font-weight: 600;
  transition: all 0.25s ease;
}

.nav-btn:hover {
  background: linear-gradient(135deg, #005fdd, #0094e6);
  transform: translateY(-2px);
}

.nav-btn.next {
  background: linear-gradient(135deg, #0077ff, #00aaff);
}

.nav-btn.next:hover {
  background: linear-gradient(135deg, #005fdd, #0094e6);
  transform: translateY(-2px);
}


.source {
  font-size: 0.85rem;
  color: #777;
  text-align: right;
  margin-top: -0.5rem;
  margin-bottom: 1.2rem;
}

.source a {
  color: inherit;
  text-decoration: none;
  font-weight: 500;
}

.source a:hover {
  color: #0077ff;
  text-decoration: underline;
  transition: color 0.2s ease;
}

#page-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: white;           
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.6s ease-in-out;
    z-index: 99999;              
}



.body-forside {
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden; 
}

.banner {
    height: 100vh;                  
    display: flex;
    justify-content: center;        
    align-items: center;            
    text-align: center;
    padding: 20px;                   /* just small padding for mobile */
    box-sizing: border-box;          /* ensures padding doesn’t break centering */
}


.banner .content {
    max-width: 600px;  
    width: 90%;        /* responsive width for small screens */
    padding: 40px;
    border-radius: 60px;
    background: rgba(181, 197, 221, 0.75);
    box-shadow: 0 40px 50px rgba(0,0,0,0.2);
}

.banner .content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.banner .content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    line-height: 1.5;
}

.button {
    display: inline-block;
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    background: #005fdd;
    color: rgb(41, 39, 39);
    border-radius: 50px;
    text-decoration: none;
    transition: transform 0.4s, background 0.5s, color 0.5s;
}


.button:hover {
    transform: translateY(-5px);
    background:  #0094e6;
    color: white;
}


@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}


@media (max-width: 900px) {
  .layout {
    flex-direction: column;
    box-shadow: none;
    border-radius: 0;
  }

  .sidebar {
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid #ddd;
  }

  .content {
    padding: 2rem 1.5rem;
  }

}

code {
    background-color: #f1f0f7; 
    padding: 2px 4px;         
    border-radius: 3px;       
    font-family: monospace;    
    font-size: 0.95em;        
    white-space: pre;
}

pre {
  background-color: #f1f0f7; 
  padding: 20px;
  border-radius: 10px;
  overflow-y: auto;
  white-space: pre-wrap;
}

p.credit {
    text-align: right;
    font-style: italic;
    color: #555;
    margin-top: 40px;
    font-size: 0.9rem;
}