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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #64748b;
    --bg-color: #f8fafc;
    --sidebar-bg: #1e293b;
    --sidebar-text: #cbd5e1;
    --sidebar-hover: #334155;
    --content-bg: #ffffff;
    --text-color: #1e293b;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --code-bg: #f1f5f9;
    --code-border: #cbd5e1;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    padding-top: 60px;
}

/* Top Menu Bar */
.top-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background-color: var(--content-bg);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    z-index: 1000;
}

.top-menu-content {
    max-width: 100%;
    height: 100%;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-menu-brand {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
}

.brand-tagline {
    font-size: 0.875rem;
    color: var(--text-light);
    font-weight: 400;
}

.top-menu .github-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--text-color);
    color: #ffffff;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.top-menu .github-link:hover {
    background-color: #000000;
    text-decoration: none;
}

.top-menu .github-link svg {
    width: 20px;
    height: 20px;
}

/* Layout */
.container {
    display: flex;
    min-height: calc(100vh - 60px);
}

/* Sidebar */
.sidebar {
    width: 280px;
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    padding: 2rem 0;
    position: fixed;
    top: 60px;
    height: calc(100vh - 60px);
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.sidebar::-webkit-scrollbar {
    width: 8px;
}

.sidebar::-webkit-scrollbar-track {
    background: var(--sidebar-bg);
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--sidebar-hover);
    border-radius: 4px;
}

.logo {
    padding: 0 1.5rem 1.5rem;
    border-bottom: 1px solid var(--sidebar-hover);
    margin-bottom: 1.5rem;
}

.logo h2 {
    font-size: 1.75rem;
    color: #ffffff;
    margin-bottom: 0.25rem;
    font-weight: 700;
}

.logo .tagline {
    font-size: 0.875rem;
    color: var(--sidebar-text);
    font-weight: 400;
}

.nav-menu {
    list-style: none;
    padding-left: 0;
}

.nav-menu li {
    margin: 0;
}

.nav-menu a {
    display: block;
    padding: 0.625rem 1.5rem;
    color: var(--sidebar-text);
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 0.9375rem;
}

.nav-menu li:not(.nav-submenu) > a {
    font-weight: 600;
    margin-top: 0.5rem;
}

.nav-submenu a {
    padding-left: 2.5rem;
    font-size: 0.875rem;
    color: var(--sidebar-text);
    opacity: 0.9;
}

.nav-menu a:hover {
    background-color: var(--sidebar-hover);
    color: #ffffff;
}

.nav-menu a.active {
    background-color: var(--primary-color);
    color: #ffffff;
    border-left: 3px solid #ffffff;
    padding-left: calc(1.5rem - 3px);
}

.nav-submenu a.active {
    padding-left: calc(2.5rem - 3px);
}

/* Accordion Menus */
.nav-accordion {
    position: relative;
}

.accordion-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.accordion-icon {
    font-size: 0.75rem;
    transition: transform 0.2s ease;
    margin-left: 0.5rem;
}

.nav-accordion.expanded .accordion-icon {
    transform: rotate(-180deg);
}

.accordion-content {
    list-style: none;
    padding-left: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.nav-accordion.expanded .accordion-content {
    max-height: 500px;
}

.nav-h4 a {
    padding-left: 3.5rem;
    font-size: 0.8125rem;
    color: var(--sidebar-text);
    opacity: 0.85;
}

.nav-h4 a.active {
    padding-left: calc(3.5rem - 3px);
}

/* Main Content */
.content {
    flex: 1;
    margin-left: 280px;
    padding: 3rem;
    max-width: 1200px;
    width: 79vw;
}

/* Page Header */
.page-header {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    letter-spacing: -0.025em;
}

.page-header .subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    font-weight: 400;
}

/* Sections */
.section {
    margin-bottom: 4rem;
}

.section h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
}

.subsection {
    margin-bottom: 2.5rem;
    background-color: var(--content-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.subsection h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.subsection h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 1.5rem 0 1rem;
}

/* Typography */
p {
    margin-bottom: 1rem;
    line-height: 1.75;
}

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

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

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

/* Lists */
ul, ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.5rem;
}

.feature-list {
    list-style: none;
    padding-left: 0;
}

.feature-list li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.75rem;
}

.feature-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Code Blocks */
code {
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 0.875em;
    background-color: var(--code-bg);
    padding: 0.2em 0.4em;
    border-radius: 3px;
    border: 1px solid var(--code-border);
}

pre {
    margin: 1.5rem 0;
    padding: 0;
    overflow-x: auto;
    border-radius: 6px;
    box-shadow: var(--shadow);
    background-color: #282c34;
}

pre code {
    display: block;
    padding: 1.25rem;
    background-color: transparent;
    color: inherit;
    border: none;
    border-radius: 6px;
    line-height: 1.6;
    overflow-x: auto;
}

pre code::-webkit-scrollbar {
    height: 8px;
}

pre code::-webkit-scrollbar-track {
    background: var(--sidebar-hover);
    border-radius: 4px;
}

pre code::-webkit-scrollbar-thumb {
    background: var(--sidebar-text);
    border-radius: 4px;
}

/* Images */
.image-container {
    margin: 2rem 0;
    text-align: center;
}

.image-container img {
    max-width: 100%;
    height: auto;
}

.image-container .caption {
    margin-top: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-light);
    font-style: italic;
}

@media (max-width: 1248px) {
  .content p img {
    width: 64vw;
    height: auto;
  }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .sidebar {
        width: 240px;
    }

    .content {
      width: 76vw;
        margin-left: 240px;
        padding: 2rem;
    }
}

@media (max-width: 768px) {
    /* Stack sidebar and content vertically on handhelds */
    .container {
        flex-direction: column;
    }
    .top-menu-content {
        padding: 0 1rem;
    }

    .brand-tagline {
        display: none;
    }

    .top-menu .github-link span {
        display: none;
    }

    .top-menu .github-link {
        padding: 0.5rem;
    }

    .sidebar {
      display:none;
    }

    .content {
        margin-left: 0;
        width: 100vw;
        padding: 1.5rem;
    }

    .content p img {
      width: 78vw;
      height: auto;
    }
    .page-header h1 {
        font-size: 2rem;
    }

    .page-header .subtitle {
        font-size: 1rem;
    }

    .section h2 {
        font-size: 1.5rem;
    }

    .subsection {
        padding: 1.5rem;
    }

    .subsection h3 {
        font-size: 1.25rem;
    }

    pre code {
        padding: 1rem;
        font-size: 0.8125rem;
    }
}

/* Smooth Scrolling and Anchor Offset */
section {
    scroll-margin-top: 5rem;
}

article {
    scroll-margin-top: 5rem;
}

/* Print Styles */
@media print {
    .top-menu {
        display: none;
    }

    body {
        padding-top: 0;
    }

    .sidebar {
        display: none;
    }

    .content {
        margin-left: 0;
        max-width: 100%;
    }

    .subsection {
        box-shadow: none;
        border: 1px solid var(--border-color);
    }

    pre code {
        background-color: var(--code-bg);
        color: var(--text-color);
    }
}