:root {
    --background-color: #f4f4f4;
    --text-color: #333;
    --accent-color: #ff6347;
    --header-bg: #ffffff;
    --footer-bg: #e0e0e0;
    --transition-speed: 0.3s;
  }
  
  [data-theme="dark"] {
    --background-color: #1a1a1a;
    --text-color: #f4f4f4;
    --header-bg: #2a2a2a;
    --footer-bg: #333;
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: "Playfair Display", serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color var(--transition-speed),
      color var(--transition-speed);
  }
  
  /* =========================================
  ================= SCROLLBAR ===================
  ============================================*/
/* Custom Scrollbar for WebKit Browsers */
::-webkit-scrollbar {
  width: 12px; /* Width of the scrollbar */
}

::-webkit-scrollbar-track {
  background: var(--header-bg); /* Track color */
  border-radius: 10px; /* Rounded corners */
}

::-webkit-scrollbar-thumb {
  background-color: var(--accent-color); /* Thumb color */
  border-radius: 10px; /* Rounded corners */
}

::-webkit-scrollbar-thumb:hover {
  background-color: rgba(var(--text-color-rgb), 0.6); /* Thumb color on hover */
}

/* Custom Scrollbar for Firefox */
* {
  scrollbar-width: thin; /* Set scrollbar width to thin */
  scrollbar-color: var(--accent-color) var(--header-bg); /* Thumb and track colors */
}

  .header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background-color: var(--header-bg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  }
  
  .logo-text {
    font-size: 1.2rem;
    font-weight: bold;
  }
  
  .logo-text-top {
    color: var(--accent-color);
  }
  
  .reader-nav button {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-color);
    cursor: pointer;
    margin-left: 1rem;
    transition: color var(--transition-speed);
  }
  
  .reader-nav button:hover {
    color: var(--accent-color);
  }
  
  .reader-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
  }
  
  #chapter-title {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    text-align: center;
    color: var(--accent-color);
  }
  
  #chapter-content {
    font-size: 1.1rem;
    line-height: 1.8;
    padding: 2rem;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all var(--transition-speed) ease;
  }

  .copyright {
    margin-block: 4rem;
    text-align: center;
  }
  
  #chapter-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
  }
  
  #chapter-content p {
    margin-bottom: 1.5rem;
  }
  
  .reader-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background-color: var(--footer-bg);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
  }
  
  .nav-button {
    background-color: var(--accent-color);
    color: #fff;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color var(--transition-speed), transform 0.2s;
  }
  
  .nav-button:hover {
    background-color: #ff4500;
    transform: scale(1.05);
  }
  
  #chapter-progress {
    font-size: 0.9rem;
  }
  
  .menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
  }
  
  .main-nav {
    display: none;
  }
  
  .main-nav ul {
    list-style-type: none;
    padding: 0;
  }
  
  .main-nav a {
    display: flex;
    align-items: center;
    padding: 1rem;
    color: var(--text-color);
    text-decoration: none;
    transition: background-color var(--transition-speed);
  }
  
  .main-nav a i {
    margin-right: 1rem;
  }
  
  .progress-container {
    width: 100%;
    height: 5px;
    background-color: var(--footer-bg);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
  }
  
  .progress-bar {
    height: 100%;
    background-color: var(--accent-color);
    width: 0%;
    transition: width var(--transition-speed) ease;
  }
  
  /* Chapter List */
  .chapter-list {
    display: none; /* Hidden by default */
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    z-index: 1000;
  }
  
  .chapter-list.active {
    display: block; /* Show when active */
  }
  
  .chapter-list ul {
    list-style-type: none;
    padding: 1rem;
    background-color: var(--header-bg);
    border-radius: 15px;
  }
  
  .chapter-list li {
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-color);
  }
  
  .chapter-list li:hover {
    background-color: var(--accent-color);
    color: #fff;
  }
  
  @media screen and (max-width: 1023px) {
    .menu-toggle {
      display: block;
    }
  
    .main-nav {
      position: fixed;
      top: 0;
      left: -100%;
      width: 80%;
      max-width: 300px;
      height: 100%;
      background-color: var(--background-color);
      box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
      transition: left var(--transition-speed) ease-in-out;
      z-index: 1000;
    }
  
    .main-nav.active {
      left: 0;
      display: block;
    }
  
    .main-nav ul {
      padding-top: 60px;
    }
  
    .main-nav a:hover {
      background-color: rgba(255, 255, 255, 0.1);
    }
  
    .chapter-list {
      width: calc(100% - 2rem);
      max-height: calc(80vh - 2rem);
      overflow-y: auto; /* Allow scrolling if too many chapters */
      border-radius: 8px;
      padding: 1rem;
      box-shadow: none; /* Remove shadow for mobile */
      backdrop-filter: blur(5px); /* Optional blur effect */
      border: solid thin var(--accent-color); /* Optional border */
      transition: all var(--transition-speed);
      animation: fadeIn var(--transition-speed); /* Optional fade-in animation */
    }
  
    @keyframes fadeIn {
      from {
        opacity: 0;
      }
      to {
        opacity: 1;
      }
    }
  }
  
  @media screen and (min-width: 768px) {
    .header-container {
      padding: 1.5rem 2rem;
    }
  
    .logo-text {
      font-size: 1.5rem;
    }
  
    .reader-container {
      padding: 0 2rem;
    }
  
    #chapter-title {
      font-size: 2.5rem;
    }
  
    #chapter-content {
      font-size: 1.2rem;
    }
  
    .reader-footer {
      padding: 1.5rem 2rem;
    }
  
    .nav-button {
      font-size: 1.1rem;
    }
  
    #chapter-progress {
      font-size: 1rem;
    }
  }
  
  @media screen and (min-width: 768px) and (max-width: 1023px) {
    .main-nav {
      width: 50%;
      max-width: none;
    }
  }
  
  @media screen and (min-width: 1024px) {
    body {
      display: grid;
      grid-template-columns: 250px 1fr;
      grid-template-rows: auto 1fr auto;
    }
  
    .main-nav {
      grid-column: 1 / 2;
      grid-row: 2 / 3;
      display: block;
      background-color: var(--header-bg);
      box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
      height: 100%;
    }
  
    .main-nav ul {
      flex-direction: column;
      padding-top: 2rem;
      position: sticky;
      top: 0%;
    }
  
    .main-nav li {
      margin: 0;
    }
  
    .main-nav a {
      padding: 1rem 2rem;
    }
  
    .main-nav a:hover {
      background-color: rgba(0, 0, 0, 0.1);
    }
  
    .reader-container {
      grid-column: 2 / -1;
      grid-row: 2 / 3;
    }
  
    .chapter-list {
      width: auto;
      max-width: 300px;
      right: calc(10%);
      top: calc(50%);
      padding: 2rem;
      box-shadow: rgba(0, 0, 0, 0.3) -2px -2px, rgba(0, 0, 0, 0.3) -2px -2px;
      max-height: 60vh;
      overflow-y: auto;
    }
  }
  
  /* LOADING OVERLAY */
  .loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999; /* Ensure it's on top */
  }
  
  .loader {
    border: 8px solid #f3f3f3; /* Light grey */
    border-top: 8px solid var(--accent-color); /* Color of your choice */
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite; /* Animation for the loader */
  }
  
  @keyframes spin {
    0% {
      transform: rotate(0deg);
    }
    100% {
      transform: rotate(360deg);
    }
  }