:root {
    --sidebar-bg: #f8f9fa;
    --accent-indigo: #4f46e5;
    --accent-cyan: #0891b2;
    --primary-text: #1e293b;
    --secondary-text: #64748b;
    --primary-color: #4f46e5;
    --text-color: #334155;
    --border-color: #e2e8f0;
    --code-bg: #1e293b;
    --code-text: #f8fafc;
    --nav-width: 280px;
}

body {
    display: grid;
    grid-template-rows: 1fr auto;
    grid-template-columns: var(--nav-width) 1fr;
    grid-template-areas:
        "sidebar main"
        "footer footer";
    margin: 0;
    font-family: 'Inter', sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: #FCFCFC;
}

.main-container {
    grid-area: main;
    display: contents;
}

/* --- Sidebar Navigation --- */
.nav-category {
    margin-bottom: 20px;
}

.nav-category-title {
    font-size: 0.8em;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--secondary-text);
    padding: 0 25px;
    margin-bottom: 10px;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin: 20px;
    padding: 15px;
    background-color: white;
    border: 1px solid var(--accent-indigo);
    border-radius: 8px;
}

.sidebar-header img {
    height: auto;
    max-width: 200px;
}

.sidebar {
    background-color: var(--sidebar-bg);
    color: var(--primary-text);
    border-right: 1px solid var(--border-color);
    height: 100vh;
    grid-area: sidebar;
    padding: 25px 0;
    position: sticky;
    top: 0;
    box-sizing: border-box;
    overflow-y: auto;
}

.sidebar nav ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.sidebar nav ul li a {
    color: var(--primary-text);
    text-decoration: none;
    display: block;
    padding: 8px 25px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.sidebar nav ul li a:hover {
    background-color: var(--border-color);
    color: var(--primary-text);
}

.sidebar nav ul li a.active {
    background-color: var(--accent-indigo);
    color: white;
    font-weight: 700;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--primary-text);
}

h1 {
    font-size: 2em;
    margin-top: 0;
}

h2 {
    margin-top: 2em;
    padding-bottom: 0.3em;
    border-bottom: 1px solid var(--border-color);
}

a {
    color: var(--accent-indigo);
}

/* --- Main Content Area --- */
.main-content {
    grid-area: main;
    padding: 40px;
    max-width: 1024px;
    box-sizing: border-box;
}

.hamburger {
    display: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.hamburger .bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: var(--primary-text);
    transition: all 0.3s ease-in-out;
}

/* --- Content Styling --- */

pre {
    background-color: #f6f8fa;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    overflow-x: auto;
    margin-bottom: 1.5em;
}

code {
    font-family: 'Fira Code', monospace;
    font-variant-ligatures: none;
    background-color: rgba(79, 70, 229, 0.08);
    color: var(--accent-indigo);
    padding: 3px 6px;
    border-radius: 6px;
    font-size: 0.9em;
}

pre code {
    background: none;
    color: inherit;
    padding: 0;
    font-size: 1em;
}

/* --- Tables --- */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1.5em;
}

th, td {
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    text-align: left;
}

th {
    background-color: #f1f5f9;
    font-weight: 600;
    color: var(--primary-text);
}

tr:nth-child(even) {
    background-color: #f8fafc;
}

/* --- Blockquotes --- */
blockquote {
    border-left: 4px solid var(--accent-indigo);
    margin: 1.5em 0;
    padding: 0.5em 1em;
    background-color: rgba(79, 70, 229, 0.04);
    color: var(--secondary-text);
}

blockquote p {
    margin: 0;
}

/* --- Site Footer --- */
.site-footer {
    grid-area: footer;
    width: 100%;
    padding: 40px 0;
    margin-top: 60px;
    text-align: center;
    border-top: 1px solid var(--border-color);
    color: var(--secondary-text);
    font-size: 0.9em;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
}

.footer-links a {
    color: var(--secondary-text);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--primary-text);
    text-decoration: none;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    body {
        grid-template-columns: 1fr;
        grid-template-areas:
            "main"
            "footer";
    }

    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        padding: 60px 20px 20px 20px;
        box-sizing: border-box;
        overflow-y: auto;
        transform: translateX(-100%);
        z-index: 1002;
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        max-width: 100%;
        padding: 30px 20px;
        width: 100%;
        box-sizing: border-box;
    }

    .hamburger {
        display: block;
        position: fixed;
        top: 5px;
        left: 5px;
        z-index: 1003;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
}