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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial,
    sans-serif;
  line-height: 1.6;
  color: #24292e;
  background-color: #f6f8fa;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

header {
  background-color: #000;
  color: white;
  padding: 30px 0;
  margin-bottom: 30px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
  text-align: center;
  font-size: 2em;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.backend-info {
  text-align: center;
  font-size: 0.9em;
  margin-top: 10px;
  opacity: 0.9;
}

.sidebar {
  background: white;
  border: 1px solid #e1e4e8;
  border-radius: 6px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.sidebar h2 {
  margin-bottom: 15px;
  font-size: 1.2em;
  color: #24292e;
  display: flex;
  align-items: center;
  gap: 8px;
}

.file-list {
  list-style: none;
}

.file-list li {
  margin-bottom: 4px;
}

.file-list .directory-header {
  font-weight: 600;
  color: #6a737d;
  margin-top: 12px;
  margin-bottom: 8px;
  font-size: 0.9em;
  padding: 5px 10px;
  background-color: #f6f8fa;
  border-radius: 3px;
}

.file-list .directory-header:first-child {
  margin-top: 0;
}

.file-list a {
  color: #0366d6;
  text-decoration: none;
  padding: 8px 12px;
  display: block;
  border-radius: 6px;
  transition: all 0.2s;
  font-size: 0.95em;
}

.file-list a:hover {
  background-color: #000;
  transform: translateX(4px);
}

.file-list a.active {
  background-color: #000;
  color: white;
  font-weight: 500;
}

#content {
  background: white;
  border: 1px solid #e1e4e8;
  border-radius: 6px;
  padding: 40px;
  min-height: 400px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

#content.empty {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #6a737d;
  font-style: italic;
  min-height: 400px;
}

/* Markdown Styles */
#content h1 {
  font-size: 2em;
  border-bottom: 1px solid #e1e4e8;
  padding-bottom: 0.3em;
  margin-bottom: 16px;
  margin-top: 24px;
}

#content h1:first-child {
  margin-top: 0;
}

#content h2 {
  font-size: 1.5em;
  border-bottom: 1px solid #e1e4e8;
  padding-bottom: 0.3em;
  margin-bottom: 16px;
  margin-top: 24px;
}

#content h3 {
  font-size: 1.25em;
  margin-bottom: 16px;
  margin-top: 24px;
}

#content h4 {
  font-size: 1em;
  margin-bottom: 16px;
  margin-top: 24px;
}

#content h5 {
  font-size: 0.875em;
  margin-bottom: 16px;
  margin-top: 24px;
}

#content h6 {
  font-size: 0.85em;
  color: #6a737d;
  margin-bottom: 16px;
  margin-top: 24px;
}

#content p {
  margin-bottom: 16px;
}

#content a {
  color: #0366d6;
  text-decoration: none;
}

#content a:hover {
  text-decoration: underline;
}

#content ul,
#content ol {
  padding-left: 2em;
}

#content li {
  margin-bottom: 4px;
}

#content blockquote {
  border-left: 4px solid #dfe2e5;
  color: #6a737d;
  padding-left: 16px;
  margin-bottom: 16px;
}

/* ============================================
   CODE BLOCKS - GitHub Style (FIXED)
   ============================================ */

/* Inline code */
#content code {
  background-color: rgba(175, 184, 193, 0.2);
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
  font-size: 85%;
  padding: 0.2em 0.4em;
  color: #24292f;
  font-weight: 400;
}

/* Code blocks (pre + code) - CRITICAL WHITESPACE SETTINGS */
#content pre {
  background-color: #f6f8fa;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  padding: 16px;
  overflow-x: auto;
  overflow-y: auto;
  margin-bottom: 16px;
  margin-top: 0;
  line-height: 1.45;
  font-size: 85%;

  /* CRITICAL: Preserve whitespace */
  white-space: pre;
  word-wrap: normal;
  word-break: normal;
  overflow-wrap: normal;

  /* Tab size */
  tab-size: 4;
  -moz-tab-size: 4;

  /* Font settings for monospace alignment */
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;

  /* Scrollbar styling */
  scrollbar-width: thin;
  scrollbar-color: #d1d5da #f6f8fa;
}

/* Remove background from code inside pre - CRITICAL WHITESPACE */
#content pre code {
  background-color: transparent;
  border-radius: 0;
  padding: 0;
  font-size: 100%;
  color: #24292f;

  /* CRITICAL: Preserve all whitespace */
  white-space: pre;
  word-break: normal;
  word-wrap: normal;
  overflow-wrap: normal;

  border: 0;
  display: block;
  overflow: visible;
  line-height: inherit;

  /* Ensure monospace font inheritance */
  font-family: inherit;
}

/* Custom scrollbar for webkit browsers */
#content pre::-webkit-scrollbar {
  height: 8px;
  width: 8px;
}

#content pre::-webkit-scrollbar-track {
  background: #f6f8fa;
  border-radius: 6px;
}

#content pre::-webkit-scrollbar-thumb {
  background: #d1d5da;
  border-radius: 6px;
}

#content pre::-webkit-scrollbar-thumb:hover {
  background: #b1b7bd;
}

/* Code block with language indicator */
#content pre[class*="language-"] {
  position: relative;
  padding-top: 36px;
}

/* Language label */
#content pre[class*="language-"]::before {
  content: attr(data-language);
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: 8px 16px;
  background-color: #e7eaed;
  border-bottom: 1px solid #d0d7de;
  border-radius: 6px 6px 0 0;
  font-size: 12px;
  font-weight: 600;
  color: #57606a;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: normal; /* Label can wrap */
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial,
    sans-serif;
}

/* Specific language colors */
#content pre.language-javascript::before {
  content: "JavaScript";
  background-color: #f7df1e22;
  color: #7c6d0a;
}

#content pre.language-python::before {
  content: "Python";
  background-color: #3776ab22;
  color: #1e4273;
}

#content pre.language-html::before {
  content: "HTML";
  background-color: #e34c2622;
  color: #8b2813;
}

#content pre.language-css::before {
  content: "CSS";
  background-color: #26499622;
  color: #132749;
}

#content pre.language-php::before {
  content: "PHP";
  background-color: #777bb422;
  color: #3b3d5a;
}

#content pre.language-json::before {
  content: "JSON";
  background-color: #29292922;
  color: #141414;
}

#content pre.language-bash::before,
#content pre.language-shell::before {
  content: "Shell";
  background-color: #4eaa2522;
  color: #275012;
}

#content pre.language-sql::before {
  content: "SQL";
  background-color: #e3821622;
  color: #73410b;
}

#content pre.language-text::before,
#content pre.language-plaintext::before {
  content: "Plain Text";
  background-color: #f0f0f022;
  color: #57606a;
}

/* Copy button container */
.code-block-wrapper {
  position: relative;
  margin-bottom: 16px;
}

.code-block-wrapper pre {
  margin-bottom: 0;
}

/* Copy button */
.copy-button {
  position: absolute;
  top: 8px;
  right: 8px;
  background-color: rgba(255, 255, 255, 0.9);
  border: 1px solid #d0d7de;
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 500;
  color: #24292f;
  cursor: pointer;
  transition: all 0.2s;
  opacity: 0;
  z-index: 10;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial,
    sans-serif;
}

.code-block-wrapper:hover .copy-button {
  opacity: 1;
}

.copy-button:hover {
  background-color: #f6f8fa;
  border-color: #1b1f2426;
}

.copy-button:active {
  background-color: #e7eaed;
  transform: scale(0.95);
}

.copy-button.copied {
  background-color: #1f883d;
  color: white;
  border-color: #1f883d;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  #content code {
    background-color: rgba(110, 118, 129, 0.4);
    color: #c9d1d9;
  }

  #content pre {
    background-color: #161b22;
    border-color: #30363d;
  }

  #content pre code {
    color: #c9d1d9;
  }

  #content pre::-webkit-scrollbar-track {
    background: #161b22;
  }

  #content pre::-webkit-scrollbar-thumb {
    background: #484f58;
  }

  #content pre::-webkit-scrollbar-thumb:hover {
    background: #6e7681;
  }

  #content pre[class*="language-"]::before {
    background-color: #21262d;
    border-bottom-color: #30363d;
    color: #8b949e;
  }

  .copy-button {
    background-color: rgba(22, 27, 34, 0.9);
    border-color: #30363d;
    color: #c9d1d9;
  }

  .copy-button:hover {
    background-color: #30363d;
  }
}

/* Mobile responsiveness */
@media (max-width: 768px) {
  #content pre {
    padding: 12px;
    font-size: 80%;
    max-width: 100%;
    overflow-x: auto;
  }

  #content pre[class*="language-"] {
    padding-top: 32px;
  }

  #content pre[class*="language-"]::before {
    padding: 6px 12px;
    font-size: 11px;
  }

  .copy-button {
    padding: 4px 8px;
    font-size: 11px;
  }
}

/* Print styles */
@media print {
  #content pre {
    background-color: #f6f8fa;
    border: 1px solid #d0d7de;
    page-break-inside: avoid;
    white-space: pre-wrap; /* Allow wrapping in print */
  }

  .copy-button {
    display: none;
  }
}

/* CRITICAL: Code block whitespace preservation */
#content pre {
  background-color: #f6f8fa;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  padding: 16px;
  overflow-x: auto;
  overflow-y: auto;
  margin-bottom: 16px;
  margin-top: 16px;
  line-height: 1.45;
  font-size: 14px;

  /* CRITICAL: These settings preserve whitespace */
  white-space: pre !important;
  word-wrap: normal !important;
  word-break: normal !important;
  overflow-wrap: normal !important;

  /* Monospace font for alignment */
  font-family: "Courier New", Courier, monospace !important;

  /* Tab size */
  tab-size: 4;
  -moz-tab-size: 4;

  /* Scrollbar styling */
  scrollbar-width: thin;
  scrollbar-color: #d1d5da #f6f8fa;
}

#content pre code {
  background-color: transparent !important;
  border-radius: 0;
  padding: 0 !important;
  font-size: 100%;
  color: #24292f;

  /* CRITICAL: Preserve whitespace in code */
  white-space: pre !important;
  word-break: normal !important;
  word-wrap: normal !important;
  overflow-wrap: normal !important;

  border: 0;
  display: block;
  overflow: visible;
  line-height: inherit;

  /* Match parent font */
  font-family: inherit !important;
}

/* Inline code should NOT preserve whitespace like this */
#content code:not(pre code) {
  background-color: rgba(175, 184, 193, 0.2);
  border-radius: 3px;
  font-family: "Courier New", Courier, monospace;
  font-size: 85%;
  padding: 0.2em 0.4em;
  color: #24292f;
  white-space: normal; /* Inline code can wrap */
}

#content table {
  border-collapse: collapse;
  width: 100%;
  margin-bottom: 16px;
}

#content table th,
#content table td {
  border: 1px solid #dfe2e5;
  padding: 6px 13px;
}

#content table th {
  background-color: #f6f8fa;
  font-weight: 600;
}

#content table tr:nth-child(2n) {
  background-color: #f6f8fa;
}

#content hr {
  border: 0;
  border-top: 2px solid #e1e4e8;
  margin: 24px 0;
}

#content img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  margin: 10px 0;
}

#content .task-list {
  list-style: none;
  padding-left: 0;
}

#content .task-list-item {
  padding-left: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

#content .task-list-item input[type="checkbox"] {
  margin: 0;
  cursor: default;
}

#content strong {
  font-weight: 600;
}

#content del {
  text-decoration: line-through;
}

.loading {
  text-align: center;
  color: #6a737d;
  padding: 20px;
}

@media (max-width: 768px) {
  #content {
    padding: 20px;
  }

  header h1 {
    font-size: 1.5em;
  }
}