/* === Genral === */

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  margin: 0;
  background-color: #f4f4f4;
  color: #333;
  display: flex;
  min-height: 100vh;
}

/* === Typography & Content === */

h1 {
  color: #2c3e50;
  border-bottom: 2px solid #3498db;
  padding-bottom: 5px;
}

h2 {
  color: #34495e;
  border-bottom: 1px solid #bdc3c7;
}

h3, h4, h5, h6 {
  color: #2c3e50;
}

a {
  color: #3498db;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

/* Citation */
blockquote {
  border-left: 4px solid #3498db;
  padding: 10px;
  background: #ecf0f1;
  font-style: italic;
  color: #7f8c8d;
}

/* Code */
pre {
  background: #2d2d2d;
  color: #ecf0f1;
  padding: 10px;
  border-radius: 5px;
  overflow-x: auto;
}

code {
  padding: 2px 5px;
  border-radius: 3px;
  font-family: "Courier New", monospace;
  font-size: small;
}

/* === Tables === */

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}

th, td {
  padding: 10px;
  border: 1px solid #bdc3c7;
}

th {
  background: #3498db;
  color: white;
}

tr:nth-child(even) {
  background: #ecf0f1;
}

/* === Main Content Container === */

#content {
    background: white;
    flex: 1;
    padding: 20px;
    margin: 0px 25px;
    transition: padding-top 0.3s ease;
}

/* === Table of Contents (TOC) === */

#toc {
  background: #ffffff;
  padding: 20px;
  border-right: 1px solid #ddd;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
  z-index: 1000;
  overflow-y: auto;
}

#toc h2 {
  font-size: 18px;
  margin-top: 0;
}

#toc ul {
  list-style: none;
  padding-left: 0;
  max-height: none;
  overflow-y: visible;
}

#toc li {
  margin: 5px 0;
}

#toc a {
  color: #3498db;
  text-decoration: none;
  font-size: 14px;
  display: block;
  padding: 2px 6px;
  border-radius: 4px;
}

#toc a:hover,
#toc a.active {
  background: #ecf0f1;
}


/* === TOC Toggle Buttons (Desktop + Mobile) === */

#toc-toggle-desktop,
#toc-toggle-mobile {
  border: none;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
  color: #555;
  padding: 8px 12px;
  margin-bottom: 10px;
  transition: color 0.3s ease;
  text-align: left;
  width: 100%;
}

/* These styles are overwritten on mobile for #toc-toggle-mobile */
#toc-toggle-desktop:hover,
#toc-toggle-desktop:focus,
#toc-toggle-mobile:hover,
#toc-toggle-mobile:focus {
  color: #222;
  outline: none;
}

/* === Utility Buttons === */

#home-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #555;
  font-size: 13px;
  text-decoration: none;
  margin-bottom: 15px;
  opacity: 0.8;
  transition: opacity 0.2s ease, color 0.2s ease;
}

#home-button:hover {
  opacity: 1;
  color: #222;
}

.copy-code-btn {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid #ccc;
  border-radius: 3px;
  color: #333;
  opacity: 0.8;
  transition: opacity 0.3s ease, background 0.3s ease;
  backdrop-filter: blur(2px);
}

.copy-code-btn:hover {
    opacity: 1;
    border-color: #888;
}

/* === Back to Top Button === */

#back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: #333;
    color: white;
    font-size: 24px;
    line-height: 40px;
    text-align: center;
    border-radius: 2px;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.3s ease, background-color 0.3s ease;
    display: none;
    z-index: 999;
    user-select: none;
}

#back-to-top:hover {
    opacity: 1;
    background: rgba(0, 0, 0, 0.7);
    text-decoration: none;
}

/* === SweetAlert Styles === */
.swal2-container.swal2-center.swal2-backdrop-show {
  background-color: white;
}

/* === Media Queries === */

/* --- Desktop Styles --- */

@media (min-width: 769px) {
    #toc {
        width: 250px;
        max-height: 100vh;
        position: sticky;
        top: 0;
        transform: translateX(0);
    }
  
    #toc.visible {
        transform: translateX(0);
    }

    #toc-toggle-desktop {
        display: inline-block;
    }
    
    #toc-toggle-mobile {
        display: none;
    }
}

/* --- Mobile Styles --- */
@media (max-width: 768px) {
    #toc {
        width: 100%;
        max-height: 200px;
        border-right: none;
        border-bottom: 1px solid #ddd;
        padding: 0px 15px;
        position: fixed;
        top: 50px;
        left: 0;
        right: 0;
        transform: translateY(-100%);
    }
    
    #toc.visible {
        transform: translateY(0);
    }
    
    #content {
        max-width: 800px;
        margin: 0 auto;
        padding-top: 200px;
    }
    
    #toc-toggle-desktop {
        display: none;
    }
    
    #toc-toggle-mobile {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: #FFFFFF;
        /*color: white;*/
        border: none;
        font-size: 50px;
        font-weight: bold;
        padding: 12px 15px;
        cursor: pointer;
        z-index: 1100;
        text-align: left;
    }
    
    #toc-toggle-mobile:hover,
    #toc-toggle-mobile:focus {
        background: #FFFFFF;
        /*color: white;*/
        outline: none;
    }
}