@import url('https://fonts.googleapis.com/css2?family=Segoe+UI:wght@300;400;600;700&family=Consolas:wght@400;700&display=swap');

:root {
    /* Color Palette - Azure/VS Code Inspired */
    --bg-body: #0d1117;          /* GitHub Dimmed Background */
    --bg-sidebar: #161b22;       /* Slightly lighter for sidebar */
    --bg-card: #21262d;          /* Card/Code Block background */
    --border-color: #30363d;     /* Subtle borders */
    
    --text-primary: #f0f6fc;     /* Heading / Main text */
    --text-secondary: #8b949e;   /* Subtitles / Meta */
    --text-link: #58a6ff;        /* Azure/GitHub Blue */
    --text-link-hover: #79c0ff;
    
    --accent-color: #0078d4;     /* Azure Brand Blue */
    --accent-hover: #2b88d8;

    --font-main: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
    --font-code: 'Consolas', 'Courier New', monospace;

    --sidebar-width: 280px;
    --header-height: 60px;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 20px;
    flex-shrink: 0;
    overflow-y: auto;
    z-index: 100;
}

.sidebar h2 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    letter-spacing: 0.5px;
}

.search-container {
    margin-bottom: 20px;
    position: relative;
}

#search-input {
    width: 100%;
    background-color: var(--bg-body);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-family: var(--font-main);
    transition: border-color 0.2s;
}

#search-input:focus {
    outline: none;
    border-color: var(--text-link);
}

.nav-header {
    font-weight: 600;
    color: var(--text-primary) !important;
    margin-top: 10px;
    margin-bottom: 5px;
}

.nav-section {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    font-weight: 700;
    margin-top: 25px;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.sidebar nav a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 6px 10px;
    margin-bottom: 2px;
    border-radius: 4px;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.sidebar nav a:hover {
    color: var(--text-primary);
    background-color: rgba(255,255,255,0.05);
}

.sidebar nav a.active {
    color: var(--text-link);
    background-color: rgba(88, 166, 255, 0.1);
    font-weight: 600;
}

/* --- Main Content --- */
.main-content {
    flex-grow: 1;
    overflow-y: auto;
    padding: 40px 60px;
    position: relative;
    background-color: var(--bg-body);
}

/* Typography */
h1 {
    font-size: 2.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    margin-bottom: 30px;
    color: var(--text-primary);
}

h2 {
    font-size: 1.75rem;
    margin-top: 40px;
    margin-bottom: 20px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

h3 {
    font-size: 1.4rem;
    margin-top: 30px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

p {
    margin-bottom: 16px;
    color: #c9d1d9; /* Slightly off-white for reading comfort */
}

a {
    color: var(--text-link);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
    color: var(--text-link-hover);
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 25px 0;
    font-size: 0.95rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
}

thead {
    background-color: var(--bg-sidebar);
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    font-weight: 600;
    color: var(--text-primary);
}

tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.02);
}

tr:hover {
    background-color: rgba(255, 255, 255, 0.04);
}

/* Code Blocks */
pre {
    background-color: #161b22 !important; /* VS Code dark bg */
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 15px;
    margin: 20px 0;
    overflow-x: auto;
}

code {
    font-family: var(--font-code);
    font-size: 0.9em;
    background-color: rgba(110, 118, 129, 0.4); /* Inline code bg */
    padding: 3px 6px;
    border-radius: 4px;
    color: #f0f6fc;
}

pre code {
    background-color: transparent; /* Reset for block code */
    padding: 0;
    color: inherit;
}

/* Images */
.main-content img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    margin: 20px 0;
    display: block;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

/* Badges / Shields */
.main-content img[src*="shields.io"] {
    display: inline-block;
    margin: 5px 5px 15px 0;
    border: none;
    box-shadow: none;
    vertical-align: middle;
}

/* Admonitions / Blockquotes */
blockquote {
    border-left: 4px solid var(--accent-color);
    background-color: rgba(0, 120, 212, 0.1);
    color: var(--text-primary);
    padding: 15px 20px;
    margin: 20px 0;
    border-radius: 0 4px 4px 0;
}

blockquote p {
    margin-bottom: 0;
    color: var(--text-primary);
}

/* Mermaid Diagrams */
.mermaid {
    background-color: var(--bg-sidebar);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
    margin: 25px 0;
}

/* Details/Summary */
details {
    background-color: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 10px 15px;
    margin: 15px 0;
}

summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--text-link);
}

summary:hover {
    color: var(--text-link-hover);
}

/* Mobile Responsive */
.menu-toggle, .menu-close, .overlay {
    display: none;
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -100%;
        top: 0;
        height: 100%;
        transition: left 0.3s ease;
        box-shadow: 5px 0 15px rgba(0,0,0,0.5);
    }

    .sidebar.open {
        left: 0;
    }

    .menu-toggle {
        display: block;
        position: fixed;
        top: 15px;
        right: 15px;
        z-index: 200;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        color: var(--text-primary);
        padding: 8px 12px;
        border-radius: 4px;
        cursor: pointer;
    }

    .menu-close {
        display: block;
        position: absolute;
        top: 15px;
        right: 15px;
        background: transparent;
        border: none;
        color: var(--text-secondary);
        font-size: 1.5rem;
        cursor: pointer;
    }

    .overlay.active {
        display: block;
        position: fixed;
        top: 0; left: 0; right: 0; bottom: 0;
        background: rgba(0,0,0,0.5);
        z-index: 90;
        backdrop-filter: blur(2px);
    }
    
    .main-content {
        padding: 20px;
    }
    
    table {
        display: block;
        overflow-x: auto;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-body);
}
::-webkit-scrollbar-thumb {
    background: #30363d;
    border-radius: 5px;
    border: 2px solid var(--bg-body);
}
::-webkit-scrollbar-thumb:hover {
    background: #505860;
}