/* CSS Variables for theming */
:root {
    --bg-primary: #fff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #f0f0f0;
    --bg-hover: #f5f5f5;
    --bg-toc: #f8f9fa;
    --text-primary: #333;
    --text-secondary: #666;
    --text-link: #0066cc;
    --border-primary: #ddd;
    --border-secondary: #eee;
    --border-toc: #dee2e6;
    --bg-toc-hover: #e9ecef;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-nav: rgba(0, 0, 0, 0.1);
    --hamburger-bar: #333;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1a1a1a;
        --bg-secondary: #2a2a2a;
        --bg-tertiary: #333;
        --bg-hover: #2a2a2a;
        --bg-toc: #2a2a2a;
        --text-primary: #e0e0e0;
        --text-secondary: #a0a0a0;
        --text-link: #6db3f2;
        --border-primary: #444;
        --border-secondary: #333;
        --border-toc: #444;
        --bg-toc-hover: #333;
        --shadow: rgba(0, 0, 0, 0.3);
        --shadow-nav: rgba(0, 0, 0, 0.5);
        --hamburger-bar: #e0e0e0;
    }
}

/* CSS Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    line-height: 1.6;
    font-size: 16px;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
}

input, button, textarea, select {
    font: inherit;
}

p, h1, h2, h3, h4, h5, h6 {
    overflow-wrap: break-word;
}

/* Basic styling (minimal, ready for your theme) */
header {
    border-bottom: 1px solid var(--border-primary);
    padding: 1rem 2rem;
}

header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

header nav > ul {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

header nav a {
    text-decoration: none;
    color: inherit;
    white-space: nowrap;
}

header nav .logo {
    font-weight: bold;
    font-size: 1.25rem;
}

/* Dropdown menu */
header nav .dropdown {
    position: relative;
    display: flex;
    align-items: center;
    /* Add padding to bottom to bridge the gap for easier hovering */
    padding-bottom: 0.5rem;
}

header nav .dropdown-toggle {
    cursor: pointer;
    user-select: none;
    display: block;
    /* Remove extra padding to compensate */
    padding-bottom: 0;
}

header nav .dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% - 0.5rem);
    left: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: 3px;
    box-shadow: 0 4px 6px var(--shadow);
    min-width: 200px;
    margin-top: 0;
    padding: 0.5rem 0;
    z-index: 1000;
    list-style: none;
    flex-direction: column;
    gap: 0;
}

header nav .dropdown:hover .dropdown-menu {
    display: flex;
}

header nav .dropdown-menu li {
    padding: 0;
    margin: 0;
}

header nav .dropdown-menu a {
    display: block;
    padding: 0.5rem 1rem;
    white-space: nowrap;
}

header nav .dropdown-menu a:hover {
    background: var(--bg-hover);
}

main {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 2rem;
}

footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--border-primary);
    margin-top: 4rem;
}

/* Posts styling */
.posts-grid {
    display: grid;
    gap: 2rem;
}

.post-card {
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-secondary);
}

.post-card h3 {
    margin-bottom: 0.5rem;
}

.post-card time {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.tags {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    background: var(--bg-tertiary);
    border-radius: 3px;
}

.posts-list {
    list-style: none;
}

.post-item {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-secondary);
}

.post-item time {
    display: inline-block;
    min-width: 100px;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.post-content, .page-content {
    line-height: 1.8;
}

.post-content h2, .page-content h2 {
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.post-content h3, .page-content h3 {
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.post-content p, .page-content p {
    margin-bottom: 1rem;
}

.post-content ul, .page-content ul,
.post-content ol, .page-content ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.post-content ul ul, .page-content ul ul,
.post-content ol ol, .page-content ol ol,
.post-content ul ol, .page-content ul ol,
.post-content ol ul, .page-content ol ul {
    margin-top: 0.25rem;
    margin-bottom: 0.25rem;
}

.post-content code, .page-content code {
    background: var(--bg-secondary);
    padding: 0.125rem 0.25rem;
    border-radius: 3px;
    font-size: 0.875em;
}

.post-content pre, .page-content pre {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 3px;
    overflow-x: auto;
    margin: 1rem 0;
}

.post-content pre code, .page-content pre code {
    background: none;
    padding: 0;
}

.post-header, .page-header {
    margin-bottom: 2rem;
}

.post-meta {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-top: 0.5rem;
    color: var(--text-secondary);
}

#search {
    padding: 0.5rem;
    border: 1px solid var(--border-primary);
    border-radius: 3px;
    min-width: 200px;
    background: var(--bg-primary);
    color: var(--text-primary);
}

.view-all {
    display: inline-block;
    margin-top: 2rem;
    text-decoration: none;
}

.hero {
    text-align: center;
    padding: 3rem 0;
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.recent-posts h2 {
    margin-bottom: 2rem;
}

/* Search results */
#search-results {
    position: absolute;
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: 3px;
    max-width: 400px;
    max-height: 400px;
    overflow-y: auto;
    box-shadow: 0 4px 6px var(--shadow);
    z-index: 1000;
}

#search-results ul {
    list-style: none;
}

#search-results li {
    padding: 0.5rem 1rem;
    border-bottom: 1px solid var(--border-secondary);
}

#search-results a {
    text-decoration: none;
    color: inherit;
}

#search-results li:hover {
    background: var(--bg-hover);
}

/* Table of Contents */
.toc {
    background: var(--bg-toc);
    border: 1px solid var(--border-toc);
    border-radius: 0.5rem;
    padding: 1rem;
    margin: 2rem 0;
    max-width: 800px;
}

.toc summary {
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    padding: 0.5rem;
    user-select: none;
    list-style-position: inside;
}

.toc summary:hover {
    background: var(--bg-toc-hover);
    border-radius: 0.25rem;
}

.toc nav {
    margin-top: 1rem;
}

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

.toc ul ul {
    padding-left: 1.5rem;
    margin-top: 0.5rem;
}

.toc li {
    margin: 0.5rem 0;
}

.toc a {
    color: var(--text-link);
    text-decoration: none;
    display: block;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
}

.toc a:hover {
    background: var(--bg-toc-hover);
    text-decoration: underline;
}

/* Add some spacing to headings when navigating via TOC */
:target {
    scroll-margin-top: 2rem;
}

/* Visually hidden class for accessibility */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Hamburger menu button - hidden by default on desktop */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 2rem;
    height: 2rem;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 10;
}

.hamburger span {
    width: 2rem;
    height: 0.25rem;
    background: var(--hamburger-bar);
    border-radius: 10px;
    transition: all 0.3s linear;
    position: relative;
    transform-origin: 1px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg);
}

/* Mobile responsive styles */
@media screen and (max-width: 768px) {
    header {
        padding: 1rem;
    }

    header nav {
        position: relative;
    }

    .hamburger {
        display: flex;
    }

    header nav > ul.nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: 70%;
        max-width: 300px;
        flex-direction: column;
        background: var(--bg-primary);
        align-items: flex-start;
        padding: 4rem 2rem 2rem;
        gap: 1.5rem;
        transform: translateX(100%);
        transition: transform 0.3s ease-in-out;
        box-shadow: -2px 0 10px var(--shadow-nav);
        z-index: 9;
    }

    header nav > ul.nav-menu.active {
        transform: translateX(0);
    }

    header nav > ul.nav-menu li {
        width: 100%;
    }

    /* Dropdown menu adjustments for mobile */
    header nav .dropdown {
        width: 100%;
        padding-bottom: 0;
        flex-direction: column;
        align-items: flex-start;
    }

    header nav .dropdown-toggle {
        width: 100%;
        padding: 0.5rem 0;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    header nav .dropdown-menu {
        position: static;
        display: none;
        box-shadow: none;
        border: none;
        border-left: 2px solid var(--border-primary);
        margin-left: 1rem;
        margin-top: 0.5rem;
        padding-left: 1rem;
        padding-top: 0.5rem;
        padding-bottom: 0;
        width: calc(100% - 1rem);
        background: transparent;
    }

    header nav .dropdown.active .dropdown-menu {
        display: flex;
    }

    header nav .dropdown-menu a {
        padding: 0.5rem 0;
    }

    header nav .dropdown-menu a:hover {
        background: transparent;
        text-decoration: underline;
    }

    /* Search bar full width on mobile */
    #search {
        width: 100%;
        min-width: unset;
    }

    /* Adjust main padding for mobile */
    main {
        padding: 0 1rem;
    }
}