*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
   }
   
   :root {
    /* Podstawowa paleta kolorów */
    --bg-color: #e8eaf6;
    --sidebar-bg: #0d1642;
    --text-color: #212529;
    --text-muted: #6c757d;
    --primary-color: #3949ab;
    --primary-hover: #303f9f;
    --border-color: #e1e4e8;
    --code-bg: #282c34;
    --code-text: #abb2bf;
    --link-hover-bg: rgba(255, 255, 255, 0.1);
    --accent-color: #5c6bc0;
    
    /* Kolory interfejsu UI */
    --sidebar-text: #ffffff;
    --sidebar-text-hover: #ffffff;
    --sidebar-text-active: #ffffff;
    --sidebar-active-bg: rgba(255, 255, 255, 0.2);
    --sidebar-link-hover: rgba(255, 255, 255, 0.1);
    --sidebar-heading: #c5cae9;
    --lang-active-bg: #5c6bc0;
    
    /* Wymiary */
    --sidebar-width: 280px;
    --header-height: 60px;
    --base-font-size: 16px;
    --line-height: 1.6;
    --border-radius: 6px;
    
    /* Cienie */
    --card-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    --hover-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
   }
   
   html {
    font-size: var(--base-font-size);
    scroll-behavior: smooth;
   }
   
   body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: var(--line-height);
    color: var(--text-color);
    background-color: #d4d8ef;
    display: flex;
   }
   
   .container {
    display: flex;
    width: 100%;
    min-height: 100vh;
   }
   
   .sidebar {
    width: var(--sidebar-width);
    background-color: var(--sidebar-bg);
    background-image: linear-gradient(to bottom, #1a237e, var(--sidebar-bg));
    color: var(--sidebar-text);
    padding: 1.5rem 1rem;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    overflow-y: auto;
    z-index: 100;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
   }
   
   .sidebar h1 {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--sidebar-heading);
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    letter-spacing: 0.5px;
   }
   
   #main-nav ul {
    list-style: none;
    padding-left: 0;
   }
   
   #main-nav li {
    margin-bottom: 0.25rem;
   }
   
   #main-nav a, #main-nav .nav-header {
    display: block;
    padding: 0.6rem 1rem;
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
    font-size: 0.95rem;
   }
   
   #main-nav a:hover {
    background-color: var(--sidebar-link-hover);
    color: var(--sidebar-text-hover);
    transform: translateX(3px);
   }
   
   #main-nav a.active {
    background-color: var(--sidebar-active-bg);
    color: var(--sidebar-text-active);
    font-weight: 500;
    border-left: 3px solid #fff;
   }
   
   #main-nav .nav-header {
    font-weight: 600;
    color: var(--sidebar-heading);
    font-size: 0.85rem;
    margin-top: 1.5rem;
    padding-left: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
   }
   
   #main-nav .submenu {
    padding-left: 1.2rem;
    margin-top: 0.25rem;
   }
   
   #main-nav .submenu a {
    padding: 0.4rem 1rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.9);
   }
   
   #main-content {
    flex-grow: 1;
    padding: 2.5rem 3rem;
    margin-left: var(--sidebar-width);
    overflow-y: auto;
    position: relative;
    background-color: var(--bg-color);
   }
   
   #main-content h2 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 2rem;
    padding-bottom: 0.7rem;
    border-bottom: 1px solid var(--border-color);
   }
   
   #main-content h3 {
    font-size: 1.5rem;
    font-weight: 500;
    margin-top: 2.5rem;
    margin-bottom: 1.2rem;
    color: var(--text-color);
   }
   
   #main-content h4 {
    font-size: 1.2rem;
    font-weight: 500;
    margin-top: 1.8rem;
    margin-bottom: 0.8rem;
    color: var(--text-muted);
   }
   
   #main-content p {
    margin-bottom: 1.2rem;
   }
   
   #main-content ul, #main-content ol {
    margin-bottom: 1.2rem;
    padding-left: 1.5rem;
   }
   
   #main-content li {
    margin-bottom: 0.5rem;
   }
   
   #main-content code {
    font-family: 'JetBrains Mono', monospace;
    background-color: rgba(0, 0, 0, 0.05);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-size: 0.875em;
    color: var(--primary-color);
   }
   
   #main-content pre {
    margin-bottom: 1.5rem;
    font-size: 0.9em;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
   }
   
   /* API Function styling */
   .api-function {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 2.5rem;
    background-color: #ffffff;
    box-shadow: var(--card-shadow);
    transition: box-shadow 0.3s ease;
    overflow: hidden;
   }
   
   .api-function:hover {
    box-shadow: var(--hover-shadow);
   }
   
   .api-function-header {
    background-color: rgba(13, 22, 66, 0.08);
    padding: 1.2rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
   }
   
   .api-function-header h3 {
    margin: 0;
    font-size: 1.3rem;
    color: var(--primary-color);
   }
   
   .api-function-signature {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9em;
    color: var(--text-muted);
    margin-top: 0.6rem;
    display: block;
    background-color: rgba(0, 0, 0, 0.03);
    padding: 0.8rem 1.2rem;
    border-radius: 4px;
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    border-left: 3px solid var(--accent-color);
   }
   
   .api-function-body {
    padding: 1.5rem;
   }
   
   .api-function-body h4 {
    margin-top: 1.2rem;
    margin-bottom: 1rem;
    font-size: 1.05rem;
    color: #495057;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 0.5rem;
   }
   
   .api-function-body h4:first-of-type {
    margin-top: 0;
   }
   
   .parameters-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1.5rem;
    font-size: 0.95em;
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.05);
   }
   
   .parameters-table th, .parameters-table td {
    border: 1px solid var(--border-color);
    padding: 0.8rem 1rem;
    text-align: left;
    vertical-align: top;
   }
   
   .parameters-table th {
    background-color: rgba(0, 0, 0, 0.02);
    font-weight: 500;
   }
   
   .parameters-table tr:hover {
    background-color: rgba(0, 0, 0, 0.01);
   }
   
   .parameters-table td code {
    font-size: 1em;
   }
   
   .parameters-table .param-name {
    font-weight: 500;
    font-family: 'JetBrains Mono', monospace;
   }
   
   .parameters-table .param-type {
    color: var(--text-muted);
    font-style: italic;
   }
   
   .parameters-table .param-properties {
    padding-left: 1.5rem;
    margin-top: 0.6rem;
    list-style: circle;
   }
   
   .throws-list {
    list-style: none;
    padding-left: 0.5rem;
   }
   
   .throws-list li {
    margin-bottom: 0.4rem;
    position: relative;
    padding-left: 1.5rem;
   }
   
   .throws-list li::before {
    content: "⚠️";
    position: absolute;
    left: 0;
    opacity: 0.7;
   }
   
   .loader {
    text-align: center;
    padding: 3rem;
    font-size: 1.2rem;
    color: var(--text-muted);
   }
   
   .loader::after {
    content: "";
    display: inline-block;
    width: 1.5rem;
    height: 1.5rem;
    margin-left: 0.5rem;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
   }
   
   @keyframes spin {
    to { transform: rotate(360deg); }
   }
   
   /* Language Switcher Styles */
   .lang-switch {
    margin-bottom: 1.5rem;
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
    display: flex;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
   }
   
   .lang-switch a.lang-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    transition: all 0.2s ease;
    margin: 0 0.3rem;
   }
   
   .lang-switch a.lang-link:hover {
    color: #ffffff;
    background-color: rgba(255, 255, 255, 0.15);
   }
   
   .lang-switch a.lang-link.active-lang {
    font-weight: 600;
    color: #ffffff;
    background-color: var(--lang-active-bg);
   }
   
   /* Nowe style dla przykładów kodu */
   pre code.language-javascript,
   pre code.language-json,
   pre code.language-bash {
    padding: 1.2rem;
    border-radius: var(--border-radius);
    overflow-x: auto;
    line-height: 1.6;
   }
   
   /* Responsive styles */
   @media (max-width: 1200px) {
    :root {
      --sidebar-width: 250px;
    }
    #main-content {
      padding: 2rem;
    }
   }
   
   @media (max-width: 992px) {
    #main-content {
      padding: 1.8rem;
    }
    .api-function-header,
    .api-function-body {
      padding: 1.2rem;
    }
   }
   
   @media (max-width: 768px) {
    :root {
      --sidebar-width: 100%;
    }
    .container {
      flex-direction: column;
    }
    .sidebar {
      position: static;
      width: 100%;
      height: auto;
      max-height: 300px;
      overflow-y: auto;
      padding: 1rem;
    }
    #main-content {
      margin-left: 0;
      padding: 1.5rem;
    }
    .sidebar h1 {
      margin-bottom: 1rem;
      font-size: 1.4rem;
    }
    #main-nav a, #main-nav .nav-header {
      padding: 0.5rem;
    }
    .lang-switch {
      margin-bottom: 1rem;
    }
    .api-function-signature {
      padding: 0.6rem;
      font-size: 0.85em;
    }
    pre code.language-javascript,
    pre code.language-json,
    pre code.language-bash {
      padding: 1rem;
      font-size: 0.85em;
    }
   }
   
   @media (max-width: 576px) {
    #main-content {
      padding: 1rem;
    }
    #main-content h2 {
      font-size: 1.5rem;
    }
    #main-content h3 {
      font-size: 1.3rem;
    }
    .parameters-table th, 
    .parameters-table td {
      padding: 0.6rem;
      font-size: 0.9em;
    }
   }
   
   /* Print styles */
   @media print {
    .sidebar {
      display: none;
    }
    #main-content {
      margin-left: 0;
      padding: 0;
    }
    .api-function {
      page-break-inside: avoid;
      box-shadow: none;
      border: 1px solid #ddd;
    }
   }