/* ===== Google Font Import - Poppins ===== */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600&display=swap');

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
    transition: all 0.4s ease;;
}


/* ===== Colours ===== */
:root{
    --body-color: #E4E9F7;
    --nav-color: #003366;
    --side-nav: #ffffff;
    --text-color: #FFF;
    --search-bar: #F2F2F2;
    --search-text: #010718;
    
}
a:link {
    color:inherit;
 }

body
    {
        font-family: Arial, sans-serif;
        margin: 0;
        padding: 0;
        background-color: #f5f7fa;
        color: #333;
        box-sizing: border-box;
    }

body.dark{
    --body-color: #18191A;
    --nav-color: #242526;
    --side-nav: #ffffff;
    --text-color: #f3f0ff;
    --search-bar: #242526;
}

nav{
    position: fixed;
    top: 0;
    left: 0;
    height: 70px;
    width: 100%;
    background-color: var(--nav-color);
    z-index: 100;
}

body.dark nav{
    border: 1px solid #393838;

}

nav .nav-bar{
    position: relative;
    height: 100%;
    max-width: 1000px;
    width: 100%;
    background-color: var(--nav-color);
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

nav .nav-bar .sidebarOpen{
    color: var(--text-color);
    font-size: 25px;
    padding: 5px;
    cursor: pointer;
    display: none;
}

nav .nav-bar .logo a{
    font-size: 25px;
    font-weight: 500;
    color: var(--text-color);
    text-decoration: none;
}

.menu .logo-toggle{
    display: none;
}

.nav-bar .nav-links{
    display: flex;
    align-items: center;
}

.nav-bar .nav-links li{
    margin: 0 5px;
    list-style: none;
}

.nav-links li a{
    position: relative;
    font-size: 17px;
    font-weight: 400;
    color: var(--text-color);
    text-decoration: none;
    padding: 10px;
}

.nav-links li a::before{
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    height: 6px;
    width: 6px;
    border-radius: 50%;
    background-color: var(--text-color);
    opacity: 0;
    transition: all 0.3s ease;
}

.nav-links li:hover a::before{
    opacity: 1;
}

.nav-bar .darkLight-searchBox{
    display: flex;
    align-items: center;
}

.darkLight-searchBox .dark-light,
.darkLight-searchBox .searchToggle{
    height: 40px;
    width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 5px;
}

.dark-light i,
.searchToggle i{
    position: absolute;
    color: var(--text-color);
    font-size: 22px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dark-light i.sun{
    opacity: 0;
    pointer-events: none;
}

.dark-light.active i.sun{
    opacity: 1;
    pointer-events: auto;
}

.dark-light.active i.moon{
    opacity: 0;
    pointer-events: none;
}

.searchToggle i.cancel{
    opacity: 0;
    pointer-events: none;
}

.searchToggle.active i.cancel{
    opacity: 1;
    pointer-events: auto;
}

.searchToggle.active i.search{
    opacity: 0;
    pointer-events: none;
}

.searchBox{
    position: relative;
}

.searchBox .search-field{
    position: absolute;
    bottom: -85px;
    right: 5px;
    height: 50px;
    width: 300px;
    display: flex;
    align-items: center;
    background-color: var(--nav-color);
    padding: 3px;
    border-radius: 6px;
    box-shadow: 0 5px 5px rgba(0, 0, 0, 0.1);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
}

.searchToggle.active ~ .search-field{
    bottom: -74px;
    opacity: 1;
    pointer-events: auto;
}

.search-field::before{
    content: '';
    position: absolute;
    right: 14px;
    top: -4px;
    height: 12px;
    width: 12px;
    background-color: var(--nav-color);
    transform: rotate(-45deg);
    z-index: -1;
}

.search-field input{
    height: 100%;
    width: 100%;
    padding: 0 45px 0 15px;
    outline: none;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 400;
    color: var(--search-text);
    background-color: var(--search-bar);
}

body.dark .search-field input{
    color: var(--text-color);
}

.search-field i{
    position: absolute;
    color: var(--nav-color);
    right: 15px;
    font-size: 22px;
    cursor: pointer;
}

body.dark .search-field i{
    color: var(--text-color);
}

@media (max-width: 790px) {
    nav .nav-bar .sidebarOpen{
        display: block;
    }

    .menu{
        position: fixed;
        height: 100%;
        width: 320px;
        left: -100%;
        top: 0;
        padding: 20px;
        background-color: var(--side-nav);
        z-index: 100;
        transition: all 0.4s ease;
    }

    nav.active .menu{
        left: -0%;
    }

    nav.active .nav-bar .navLogo a{
        opacity: 0;
        transition: all 0.3s ease;
    }

    .menu .logo-toggle{
        display: block;
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .logo-toggle .siderbarClose{
        color: var(--text-color);
        font-size: 24px;
        cursor: pointer;
    }

    .nav-bar .nav-links{
        flex-direction: column;
        padding-top: 30px;
    }

    .nav-links li a{
        display: block;
        margin-top: 20px;
    }
}

.container {
    width: 100%;
    margin: 0 auto;
    max-width: 1200px;
    
}

a { text-decoration: none; }
/* Main content and layout styling */
.main-content {
    display: flex;
    flex-wrap: wrap;
    margin: 20px auto;
    max-width: 1200px;
}

.content-area {
    flex: 3;
    padding: 20px;
    background-color: var(--body-color);
}
h1 {
    text-align: center;
     font-family: Arial, sans-serif;
    color: #333;
}

.sidebar {
    flex: 1;
    padding: 20px;
    background-color: rgb(255, 255, 255);
    color: blue;
    margin-left: 20px;
    margin-top: 50px;
    border-radius: 8px;
}
/* Boxes grid styling */
.boxes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 30px;
}

.box {
    background-color: #f0f0f0;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.box:hover {
    background-color: #ddd;
    transform: scale(1.05);
    
}
}
article {
  max-width: 900px;
  margin: 20px auto;
  background: white;
  border: 1px solid #ddd;
  border-radius: 5px;
  padding: 20px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
   font-family: Arial, sans-serif;
}

article h2 {
  color: #04000a;
  margin-bottom: 10px;
}

article h3 {
  color: #555;
  margin-top: 15px;
}

article p, article li {
  margin: 10px 0;
}

article ol, article ul {
  padding-left: 20px;
}

article table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

article table, th, td {
  border: 1px solid #ddd;
}

article th, article td {
  text-align: center;
  padding: 10px;
}

article th {
  background-color: #2913a2;
  color: white;
}



/* Footer styling */
.footer {
    text-align: center;
    padding: 15px;
    background-color: var(--nav-color);
    color: white;
    margin-top: 20px;
}
 

/* Responsive adjustments */
@media (max-width: 768px) {
    .main-content {
        flex-direction: column;
    }
    .sidebar {
        margin-left: 0;
        margin-top: 20px;
    }
}

/* Calculator styling */
.calculator-container {
    max-width: 800px;
    margin: 30px auto;
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    h1, h2 {
        text-align: center;
        color: #333;
    }
  
  .input-section label {
    font-weight: bold;
    margin-top: 10px;
    display: block;
  }
  
  input {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 4px;
  }
  
  .button-section {
    display: flex;
    justify-content: space-between;
  }
  
  button {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
  }
  
  button#clear {
    background-color: #e74c3c;
    color: white;
  }
  
  button#calculate {
    background-color: #2ecc71;
    color: white;
  }
  
  .output-section {
    margin-top: 20px;
  }
  
  #final-result {
    font-family: 'Poppins', sans-serif;
    font-size: 1.2em;
    margin-bottom: 20px;
    font-weight: bold;
    color: #05842d;
    text-align: center;
  }
  
  #steps-container h3 {
    margin-top: 20px;
  }
  
  #steps {
    font-size: 0.95em;
    color: #1e019f;
    line-height: 1.5;
    font-size: 20px;
    text-align: center;

 

/* Footer */
 /* Back to Top Button */
.back-to-top {
    display: inline-block;
    position: fixed; /* Fix the button in place */
    bottom: 20px; /* Distance from the bottom of the screen */
    right: 20px; /* Distance from the right of the screen */
    background-color: #eb0000; /* Button background color */
    color: white; /* Button text color */
    padding: 10px 15px; /* Padding for the button */
    border-radius: 5px; /* Rounded corners */
    text-decoration: none; /* Remove underline */
    font-weight: bold; /* Make text bold */
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2); /* Add shadow for better visibility */
}

.back-to-top:hover {
    background-color: #11cb21; /* Darker green on hover */
    text-decoration: underline; /* Underline on hover */
}