body {
  font-family: 'Inter', sans-serif;
  background: #f5f7fa;
  color: #333;
  margin: 0;
}

.header {
  position: sticky;
  top: 0;
  background: #0078d4;
  color: #fff;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.search-bar {
  padding: 0.5rem;
  border-radius: 4px;
  border: none;
}

.layout {
  display: flex;
}



/* Sidebar box */
.sidebar {
  width: 250px;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 1rem;
  margin-left: 1rem;
  height: calc(100vh - 90px);
  overflow-y: auto;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

/* Collapsible buttons */
.collapsible {
  background-color: #0078d4;
  color: white;
  cursor: pointer;
  padding: 8px;
  width: 100%;
  border: none;
  text-align: left;
  font-size: 1rem;
  margin-bottom: 5px;
  border-radius: 4px;
}

.collapsible.active, .collapsible:hover {
  background-color: #005a9e;
}

.collapse-content {
  max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease; /* smooth expand/collapse */
    padding-left: 10px;    
}

.collapse-content ul {
  list-style: none;
  padding-left: 0;
}

.collapse-content li {
  margin: 5px 0;
}

.collapse-content a {
  text-decoration: none;
  color: #0078d4;
}

.collapse-content a:hover {
  text-decoration: underline;
}



.main-content {
   flex: 1; /* Take remaining space */
   background-color: #f4f4f4;
   padding: 20px;
}

/* Card Layout */
.card {
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  margin: 20px 0;
  padding: 20px;
  transition: all 0.3s ease;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-header h2 {
  font-size: 1.4rem;
  margin: 0;
}

.toggle-btn {
  background: #0078d4;
  color: #fff;
  border: none;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.toggle-btn:hover {
  background: #005a9e;
}

.card-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease, padding 0.3s ease;
}

.card-content.collapsed {
  padding-top: 0;
}

.card-content.expanded {
  max-height: 1000px; /* enough to show full essay */
  padding-top: 15px;
}

/*Newly added section for breadcrumbs-Begins*/

/*custom font*/
@import url(https://fonts.googleapis.com/css?family=Merriweather+Sans);

* {margin: 0; padding: 0;}
/*
html, body {min-height: 100%;}

body {
    text-align: center;
    padding-top: 100px;
    background: #689976;
    background: linear-gradient(#689976, #ACDACC);
    font-family: 'Merriweather Sans', arial, verdana;
}
*/	
.breadcrumb {
    /*centering*/
    /*display: inline-block;*/
    box-shadow: 0 0 15px 1px rgba(0, 0, 0, 0.35);
    overflow: hidden;
    border-radius: 5px;
    /*Lets add the numbers for each link using CSS counters. flag is the name of the counter. to be defined using counter-reset in the parent element of the links*/
    counter-reset: flag; 
    float:right;
}

.breadcrumb a {
    text-decoration: none;
    outline: none;
    display: block;
    float: left;
    font-size: 12px;
    line-height: 36px;
    color: white;
    /*need more margin on the left of links to accomodate the numbers*/
    padding: 0 10px 0 60px;
    background: #666;
    background: linear-gradient(#666, #333);
    position: relative;
}

/*since the first link does not have a triangle before it we can reduce the left padding to make it look consistent with other links*/
.breadcrumb a:first-child {
    padding-left: 46px;
    border-radius: 5px 0 0 5px; /*to match with the parent's radius*/
}
.breadcrumb a:first-child:before {
    left: 14px;
}
.breadcrumb a:last-child {
    border-radius: 0 5px 5px 0; /*this was to prevent glitches on hover*/
    padding-right: 20px;
}

/*hover/active styles*/
.breadcrumb a.active, .breadcrumb a:hover{
    background: #333;
    background: linear-gradient(#6452e4, #2109de);
}
.breadcrumb a.active:after, .breadcrumb a:hover:after {
    background: #333;
    background: linear-gradient(135deg, #6452e4, #2109de);
}

/*adding the arrows for the breadcrumbs using rotated pseudo elements*/
.breadcrumb a:after {
    content: '';
    position: absolute;
    top: 0; 
    right: -18px; /*half of square's length*/
    /*same dimension as the line-height of .breadcrumb a */
    width: 36px; 
    height: 36px;
    /*as you see the rotated square takes a larger height. which makes it tough to position it properly. So we are going to scale it down so that the diagonals become equal to the line-height of the link. We scale it to 70.7% because if square's: 
    length = 1; diagonal = (1^2 + 1^2)^0.5 = 1.414 (pythagoras theorem)
    if diagonal required = 1; length = 1/1.414 = 0.707*/
    transform: scale(0.707) rotate(45deg);
    /*we need to prevent the arrows from getting buried under the next link*/
    z-index: 1;
    /*background same as links but the gradient will be rotated to compensate with the transform applied*/
    background: #666;
    background: linear-gradient(135deg, #666, #333);
    /*stylish arrow design using box shadow*/
    box-shadow: 
        2px -2px 0 2px rgba(0, 0, 0, 0.4), 
        3px -3px 0 2px rgba(255, 255, 255, 0.1);
    /*
        5px - for rounded arrows and 
        50px - to prevent hover glitches on the border created using shadows*/
    border-radius: 0 5px 0 50px;
}
/*we dont need an arrow after the last link*/
.breadcrumb a:last-child:after {
    content: none;
}
/*we will use the :before element to show numbers*/
.breadcrumb a:before {
    content: counter(flag);
    counter-increment: flag;
    /*some styles now*/
    border-radius: 100%;
    width: 20px;
    height: 20px;
    line-height: 20px;
    margin: 8px 0;
    position: absolute;
    top: 0;
    left: 30px;
    background: #444;
    background: linear-gradient(#444, #222);
    font-weight: bold;
}


.flat a, .flat a:after {
    background: white;
    color: black;
    transition: all 0.5s;
}
.flat a:before {
    background: white;
    box-shadow: 0 0 0 1px #ccc;
}
.flat a:hover, .flat a.active, 
.flat a:hover:after, .flat a.active:after{
    background: #9EEB62;
}
/*Newly added section for breadcrumbs-Ends*/