:root {
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    --bg-color: #ffffff;
    --text-color: #111111;
    --link-color: #111111;
    --link-hover-color: #555555;
    --muted-color: #666666;
    --code-bg: #f4f4f4;
    --max-width: 1024px;
    /* Increased for grid layout */
    --content-width: 680px;
    --sidebar-width: 240px;
    --spacing: 1.5rem;
    --border-color: #e5e5e5;
}

html {
    height: 100%;
    -ms-overflow-style: none;
    /* IE and Edge */
    scrollbar-width: none;
    /* Firefox */
}

/* Hide scrollbar for Chrome, Safari and Opera */
html::-webkit-scrollbar {
    display: none;
}

* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    padding-bottom: 6rem;
    /* Space for fixed footer */
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ... existing styles ... */

/* Footer */
footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 0;
    background-color: rgba(255, 255, 255, 0.90);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(10px);
}

.container {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 2rem 1rem;
    flex: 1;
}

/* Homepage specific container */
.home-container {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 2rem 1rem;
    flex: 1;
}

header {
    margin-bottom: 3rem;
}

h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
    scroll-margin-top: 2rem;
}

p {
    margin-bottom: 1rem;
}

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

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

.content-link {
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

li {
    margin-bottom: 0.5rem;
}

.date {
    display: inline-block;
    min-width: 120px;
    color: var(--muted-color);
    font-variant-numeric: tabular-nums;
}

code {
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
    background-color: var(--code-bg);
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-size: 0.9em;
}

pre {
    background-color: var(--code-bg);
    padding: 1rem;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

pre code {
    background-color: transparent;
    padding: 0;
    font-size: 0.85em;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1.5rem 0;
    border-radius: 4px;
}

/* Article Layout */
.article-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1rem;
    flex: 1;
}

@media (min-width: 1024px) {
    .article-grid {
        grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
        align-items: start;
    }
}

/* Sidebar */
.sidebar {
    display: none;
}

@media (min-width: 1024px) {
    .sidebar {
        display: block;
        position: sticky;
        top: 2rem;
    }
}

.sidebar-nav {
    font-size: 0.875rem;
}

.sidebar-title {
    display: block;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.jump-ahead {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--muted-color);
    margin-bottom: 1rem;
}

.toc-links {
    border-left: 1px solid var(--border-color);
    padding-left: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toc-link {
    color: var(--muted-color);
    transition: color 0.2s;
}

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

.social-links {
    margin-top: 2rem;
    padding-left: 0.75rem;
    display: flex;
    gap: 0.75rem;
}

.social-icon {
    color: var(--muted-color);
    transition: color 0.2s;
}

.social-icon:hover {
    color: var(--text-color);
}

/* Footer previously defined at top */

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--muted-color);
}

@media (min-width: 640px) {
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-dot {
    color: var(--border-color);
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.footer-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--muted-color);
}

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

.icon {
    width: 1rem;
    height: 1rem;
}

.icon-sm {
    width: 0.875rem;
    height: 0.875rem;
}

/* Flashbox / GLightbox Styles */
.flashbox-container {
    margin: 2rem 0;
    cursor: pointer;
}

.flashbox-container img {
    width: 100%;
    transition: opacity 0.3s ease;
}

.flashbox-container:hover img {
    opacity: 0.9;
}

.flashbox-container figcaption {
    font-size: 0.875rem;
    color: var(--muted-color);
    margin-top: 0.5rem;
    text-align: center;
}

.image-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin: 2rem 0;
}

@media (min-width: 640px) {
    .image-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.subtitle {
    font-size: 1.125rem;
    color: var(--muted-color);
    margin-top: 1rem;
}