/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
}

body {
    /*font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;*/
        font-family: 'Overlock', 'Helvetica', "Lucida Console", "Lucida", "Lucida Sans Unicode", "Geneva", sans-serif;
line-height: 1.6;
    color: #333;
    background: #fff; /* White background */
    overflow-x: hidden;
}

/* Canvas Background Layer - ALWAYS behind everything */
#canvas-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    display: block;
    overflow: hidden;
}

#canvas-background canvas,
#mycanvas {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    display: block;
    z-index: 0;
    margin: 0 !important;
}

/* Main Layout - Desktop: Side by Side */
.main-container {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 1; /* Above canvas */
}

/* Navigation Sidebar */
.nav-sidebar {
    width: 300px;
    background: rgba(255, 255, 255, 0.05); /* 85% opaque white with 15% transparency */
    backdrop-filter: blur(2px); /* Blur effect on the canvas behind */
    color: #333;
    padding: 2em;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    transition: transform 0.3s ease;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.051);
    z-index: 10;
}

.nav-sidebar h1 {
    font-size: 1.8em;
    margin-bottom: 0.5em;
    color: #333;
}

.nav-sidebar nav ul {
    list-style: none;
    margin-top: 0.5em; /*// TWEAK*/
} 

.nav-sidebar nav h3 {
    font-size: 1.1em;
    margin-top: 0.5em; /*// TWEAK*/
    margin-bottom: 0.5em; /*// TWEAK*/
    color: #444;
    cursor: pointer;
    user-select: none;
}

.nav-sidebar nav ul[data-section] {
    margin-left: 1em;
    margin-bottom: 1em;
}

.nav-sidebar nav li {
    margin-bottom: 0.2em;
}

.nav-sidebar nav a {
    color: #0066cc;
    text-decoration: none;
    display: block;
    padding: 0.15em; /*//!!tweak*/
    border-radius: 4px;
    transition: background 0.2s;
    font-size: 0.95em;
}

.nav-sidebar nav a:hover,
.nav-sidebar nav a.active {
    background: rgba(0, 102, 204, 0.1);
    color: #0044aa;
}

/* Content Area */
.content-area {
    flex: 1;
    margin-left: 300px;
    padding: 0;
    position: relative;
    z-index: 5;
}

#content-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
    background: rgba(255, 255, 255, 0.15); /* TWEAK 85% opaque white with 15% transparency */
    backdrop-filter: blur(2px);  Blur canvas behind content 
    min-height: 100vh;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.051);
}

/* Mobile Menu Toggle Button */
.menu-toggle {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(2px);
    border: none;
    color: #333;
    font-size: 1.5em;
    width: 50px;
    height: 50px;
    border-radius: 8px;
    cursor: pointer;
    /*box-shadow: 0 2px 10px rgba(0,0,0,0.2);*/
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.1);
    transition: background 0.2s;
}

.menu-toggle:hover {
    background: rgba(200, 200, 200, 0.95);
}

.menu-toggle:active {
    background: rgba(150, 150, 150, 0.95);
}

/* Overlay for mobile menu */
.menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.menu-overlay.active {
    opacity: 1;
}

/* Typography */
#content-container h1 {
    font-size: 2.5em;
    margin-bottom: 0.5em;
    color: #222;
}

#content-container h2 {
    font-size: 1.8em;
    margin-top: 1.5em;
    margin-bottom: 0.5em;
    color: #333;
    border-bottom: 2px solid #e0e0e0;
    padding-bottom: 0.3em;
}

#content-container h3 {
    font-size: 1.3em;
    margin-top: 1.2em;
    margin-bottom: 0.5em;
    color: #444;
}

#content-container p {
    margin-bottom: 1em;
}

/* Links - Global */
a {
    text-decoration: none;
    color: #339900;
    background-color: rgba(255, 255, 255, 0.5);
    border-bottom: 1px dotted black;
    transition: color 0.2s;
}

a:hover {
    cursor: pointer;
    border-bottom: 1px solid #339900;
    color: #339900;
}

a:active {
    color: #333333;
}

a:visited {
    color: #556555;
}

/* Override content area links */
#content-container a {
    color: #339900;
    background-color: rgba(255, 255, 255, 0.5);
}

#content-container a:hover {
    color: #339900;
}

/* Override nav sidebar links */
.nav-sidebar nav a {
    color: #339900;
    background-color: rgba(255, 255, 255, 0.5);
}

.nav-sidebar nav a:hover,
.nav-sidebar nav a.active {
    color: #339900;
}

/* Lists */
#content-container ul, 
#content-container ol {
    margin-left: 2em;
    margin-bottom: 1em;
}

#content-container li {
    margin-bottom: 0.5em;
}

/* Images */
#content-container img {
    max-width: 100%;
    height: auto;
    display: block;
    /*margin: 1.5em auto;*/
    /*border-radius: 4px;*/
    box-shadow: 0 2px 8px rgba(0,0.5,0, 0.1);
}

/* Videos & Audio */
#content-container video,
#content-container audio {
    max-width: 100%;
    margin: 1.5em auto;
    display: block;
}

/* Blockquotes */
#content-container blockquote {
    border-left: 4px solid #0066cc;
    padding-left: 1em;
    margin: 1.5em 0;
    font-style: italic;
    color: #555;
    background: #f9f9f9;
    padding: 1em;
}

/* Code */
#content-container code {
    background: #f4f4f4;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

#content-container pre {
    background: #f4f4f4;
    padding: 1em;
    border-radius: 4px;
    overflow-x: auto;
    margin: 1em 0;
}

#content-container pre code {
    background: none;
    padding: 0;
}

/* Horizontal rule */
#content-container hr {
    border: none;
    border-top: 1px solid #e0e0e0;
    margin: 2em 0;
}

/* Tables */
#content-container table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
}

#content-container th,
#content-container td {
    padding: 0.75em;
    border: 1px solid #ddd;
    text-align: left;
}

#content-container th {
    background: #f4f4f4;
    font-weight: bold;
}

/* Loading & Error States */
.loading {
    text-align: center;
    padding: 2em;
    color: #999;
}

.error {
    background: #fee;
    border: 1px solid #fcc;
    padding: 1em;
    border-radius: 4px;
    color: #c00;
    margin: 2em;
}

/* Mobile & Tablet Responsive */
@media (max-width: 768px) {
    .main-container {
        flex-direction: column;
    }
    
    /* Show hamburger menu button */
    .menu-toggle {
        display: block;
    }
    
    /* Hide sidebar by default on mobile */
    .nav-sidebar {
        transform: translateX(-100%);
        width: 280px;
        z-index: 999;
        background: rgba(255, 255, 255, 0.85);
    }

    .menu-toggle {
        background: rgba(255, 255, 255, 0.85);
    }
    
    .nav-sidebar.active {
        transform: translateX(0);
    }
    
    /* Show overlay when menu is open */
    .menu-overlay {
        display: block;
    }
    
    /* Content takes full width on mobile */
    .content-area {
        margin-left: 0;
        width: 100%;
    }
    
    #content-container {
        padding: 80px 20px 40px 20px; /* Extra top padding for menu button */
    }
    
    #content-container h1 {
        font-size: 2em;
    }
    
    #content-container h2 {
        font-size: 1.5em;
    }
    
    #content-container h3 {
        font-size: 1.2em;
    }
}

/* Very small screens */
@media (max-width: 480px) {
    .nav-sidebar {
        width: 100%;
    }
    
    #content-container {
        padding: 80px 15px 30px 15px;
    }
}