* {
 margin: 0;
 padding: 0;
 box-sizing: border-box;
}

body {
 font-family: Arial, sans-serif;
 background-color: rgba(250, 235, 215, 0.384);
 display: flex;
 flex-direction: column; /* Allow header and content to stack vertically */
 height: 100vh;
 overflow: hidden; /* Prevent body scrolling */
}

/* Header stays on top */
header {
 background-color: orange;
 color: black;
 padding: 15px 20px;
 text-align: center;
 margin-bottom: 10px;
 z-index: 1000; /* Keep it on top of other elements */
}
.logo1{
 width: auto;
 height: 40px;
 margin: 10px 15px;
 border: 10px ;
 }
.logo2{
  width: auto;
 height: 30px;
 margin: 10px 0px;
}
nav{
 display: flex; 
 align-items: center;
 height: 40px;
 padding: 20px 0;
 }   
 .but2{
  width: 100px;
  height: 30px;
  margin: 10px 10px;
  background-color: rgba(255, 166, 0, 0);
  font-size: 15px;
  border: 2px orange;
} 
.div1{
 margin-left: 50%;
}
a{
 text-decoration: none;
 color: rgba(0, 0, 0, 0.986);
}
a:hover{
 color: antiquewhite;
}

/* Sidebar (aside) stays fixed to the left */
aside {
 width: 250px;
 background-color: orange;
 padding: 10px;
 height: calc(100vh - 60px); /* Full height minus the header */
 overflow-y: auto; /* Scroll for the sidebar */
 position: fixed;
 top: 50px; /* Ensure it starts below the header */
 left: 0;
 box-shadow: 2px 0px 5px orange;
 transition: width 0.3s ease-in-out;
 margin-top: 20px;
}

aside h2 {
 margin-bottom: 10px;
}

aside ul {
 list-style-type: none;
 padding-left: 0;
}

aside ul li a {
 color: antiquewhite;
 text-decoration: none;
 display: block;
 margin-bottom: 10px;
 padding: 5px;
 border-radius: 5px;
 transition: background-color 0.3s ease;
}

aside ul li a:hover {
 background-color: rgba(255, 68, 0, 0.548);
}
#module-links a:hover {
  background-color: antiquewhite;
  border-radius: 10px;
 color: orange; 
 transition: 3s ease-in-out;
}

/* Main content  */
main {
 margin-left: 250px; 
 padding: 10px;
 height: calc(100vh - 80px); 
 overflow-y: auto; 
 flex: 1;
 background-color: rgba(250, 235, 215, 0.795);
 transition: margin-left 0.3s ease-in-out;
}

/* Container containing everything */
.container {
 display: flex;
 flex-wrap: nowrap;
 min-height: 100vh;
}

/* Module content  */
#exercise-content {
 background-color: antiquewhite;
 border-radius: 8px;
 padding: 20px;
 box-shadow: 0 2px 10px orange;
}

#exercise-title {
 font-size: 20px;
 margin-bottom: 10px;
}

#editor {
 height: 200px;
 margin-bottom: 10px;
}

/* Buttons */
button {
 background-color: orange;
 color: antiquewhite;
 border: none;
 padding: 10px;
 border-radius: 5px;
 cursor: pointer;
 transition: background-color 0.3s ease;
 margin-right: 10px;
}

button:hover {
 background-color:orange;
}

button:disabled {
 background-color: orange;
 cursor: not-allowed;
}

#preview {
 border: 1px solid orange;
 padding: 10px;
 margin-top: 20px;
 min-height: 100px;
 background-color: antiquewhite;
}

#result-message {
 font-weight: bold;
 margin-top: 10px;
 
}

#progress {
 margin-top: 20px;
 font-size: 16px;
}

#progress-text {
 font-weight: bold;
}

/* Navigation buttons */
#nav-buttons {
 display: flex;
 justify-content: space-between;
 margin-top: 20px;
}

/* Action buttons  */
#action-buttons {
 display: flex;
 justify-content: space-between;
 margin-top: 20px;
}

/* Responsive design for small screens */
@media (max-width: 768px) {
 aside {
   width: 200px; 
   height: calc(100vh - 60px); 
 }

 main {
   margin-left: 200px;
   
 }

 #sidebar a {
   font-size: 16px;
 }

 button {
   padding: 5px 10px; 
 }

 
 .container {
   flex-direction: column;
   
 }

 
 header {
   padding: 5px;
 }
}

@media (max-width: 480px) {
 aside {
   width: 100%; 
   position: relative; 
   height: auto;
 }

 main {
   margin-left: 0; 
   
 }

 #sidebar a {
   font-size:12px; 
 }

 
 #nav-buttons,
 #action-buttons {
   flex-direction: column;
 }
}