:root {
    --primary: #c40000;
    --text-color: #1e0b0b;
    --muted-color: #7a3c3c;
    --surface: #ffffff;

    /* New theme variables */
    --bg: #ffffff;
    --link: #c40000;
    --link-hover: #940000;
    --header-bg: #B60000; /* subtle teal tint */
    --header-fg: #ffffff; /* deep teal text */
    --header-border: rgba(255, 255, 255, 0.20);
    --footer-bg: #B60000; /* dark teal */
    --footer-fg: #ffffff; /* light text on footer */
    --footer-link: #ffd1d1; /* links on footer */
    --tag-bg: #ffe0e0; /* pill background */
    --code-bg: #fdf6e3; /* code/pre background */
    --diagram-bg: #85837e; /* diagram background, same for dark mode */
    --code-fg: #586e75; /* code/pre text */
    --code-border: #eee8d5; /* thin inner border for code blocks */

    /* Code token colors (light) */
    --code-token-comment: #93a1a1;
    --code-token-punctuation: #657b83;
    --code-token-property: #6c71c4; /* tag/constant/symbol/deleted share this */
    --code-token-boolean: #2aa198; /* and number */
    --code-token-selector: #859900; /* attr-name/char/builtin/inserted */
    --code-token-string: #b58900;
    --code-token-operator: #cb4b16; /* and entity/url */
    --code-token-atrule: #268bd2; /* and attr-value/keyword */
    --code-token-function: #2aa198; /* and class-name */
    --code-token-regex: #dc322f; /* and important/variable */
}

/* Dark theme overrides */
[data-theme="dark"] {
    --bg: #120a0a;
    --surface: #1a1010;
    --text-color: #f5e9e9;
    --muted-color: #c98e8e;
    --primary: #ff5c5c;
    --link: #ff5c5c;
    --header-bg: #741b1b;
    --header-fg: #f5e9e9;
    --header-border: rgba(255, 255, 255, 0.10);
    --footer-bg: #741b1b;
    --footer-fg: #ffd6d6;
    --footer-link: #ffaaaa;
    --tag-bg: #581d1d;
    --code-bg: #002b36;
    --code-fg: #93a1a1;
    --code-border: #073642;

    /* Code token colors (dark) */
    --code-token-comment: #586e75;
    --code-token-punctuation: #eee8d5;
    --code-token-property: #6c71c4;
    --code-token-boolean: #2aa198;
    --code-token-selector: #859900;
    --code-token-string: #b58900;
    --code-token-operator: #cb4b16;
    --code-token-atrule: #268bd2;
    --code-token-function: #2aa198;
    --code-token-regex: #dc322f;
}

/* Basic sensible defaults kept here */
body {
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
    color: var(--text-color);
    background: var(--bg);
}


/* Site overrides for header, nav, and small utilities */
.site-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem 0;
}

.site-nav .site-logo img {
    height: 3rem;
    width: 3rem;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.site-nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    gap: 1.1rem;
    align-items: center;
}

.site-nav a {
    color: var(--header-fg);
    text-decoration: none;
    padding: 0.25rem 0.15rem;
}

.site-nav a:hover {
    color: var(--footer-link);
}

.site-logo a {
    display: inline-block;
    /* Remove white tile box behind the logo */
    background: transparent;
    padding: 0;
    border-radius: 10px; /* keep rounded shape if needed */
    box-shadow: none;
}

.site-logo-img {
    height: 3rem;
    width: 3rem;
    object-fit: cover;
    border-radius: 8px;
    display: block;
}

/* Remove default paragraph margin on the site logo wrapper */
.site-logo p.with-image {
    margin: 0 !important;
    padding: 0 !important;
}

/* Header (full width) + inner container (constrained) */
.site-header {
    background: var(--header-bg);
    color: var(--header-fg);
    width: 100%;
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--header-border);
    margin-top: 0;
    text-align: center;
    /* Keep bottom spacing subtle; body content provides main spacing */
    margin-bottom: 1rem;
}

.site-header-inner {
    margin: 0 auto;
    padding: 0 1rem;
}

.site-header .site-title {
    margin: 0.25rem 0;
    font-family: 'Merriweather', 'Georgia', serif;
    font-weight: 700;
    color: var(--header-fg);
    font-size: clamp(1.6rem, 4.2vw, 2.8rem);
    letter-spacing: -0.5px;
}

.site-header .site-description {
    margin: 0;
    font-family: 'Merriweather', 'Georgia', serif;
    font-weight: 300;
    color: color-mix(in srgb, var(--header-fg) 75%, transparent);
    font-size: clamp(1rem, 1.6vw, 1.25rem);
}

/* Layout container: center page and constrain width for better readability */
.site-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.25rem 1rem; /* give breathing room on mobile */
}

/* Post layout hooks */
.post-main {
    max-width: 1180px;
    margin: 1.5rem auto;
    padding: 0 1rem;
}

.post-meta {
    color: var(--muted-color);
    font-size: 1rem;
}

/* Make sure article cards inherit card styles */
article {
    box-sizing: border-box;
}

/* Footer: strong, branded bar using CSS variables */
.site-footer {
    background: var(--footer-bg);
    color: var(--footer-fg);
    padding: 2rem 0;
    margin-top: 2.5rem;
    border-top: 1px solid var(--header-border);
}

.site-footer a {
    color: var(--footer-link);
}

.site-footer .copyright,
.site-footer .social-icons {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 1rem;
}

.site-footer .copyright {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    text-align: center;
    font-size: 0.95rem;
}

.site-footer .social-icons {
    margin-top: 0.85rem;
    display: flex;
    justify-content: center;
    gap: 0.9rem;
}

.site-footer .social-icons a {
    color: var(--footer-link);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--footer-fg) 30%, transparent);
    transition: background 120ms ease, transform 120ms ease;
}

.site-footer .social-icons a:hover {
    background: color-mix(in srgb, var(--footer-fg) 50%, transparent);
    transform: translateY(-1px);
}

.site-footer .social-icons svg {
    width: 20px;
    height: 20px;
}

/* Ensure nav images don't overflow */
.site-nav .icon {
    width: 1.2rem;
    height: 1.2rem;
}

.social-icons svg .background-color {
    fill: color-mix(in srgb, var(--footer-fg) 30%, transparent);
}

.site-footer .social-icons a:hover svg .background-color {
    fill: color-mix(in srgb, var(--footer-fg) 50%, transparent);
}

/* Image thumbnail helpers: consistent aspect ratio, cover, and lazy loading support */
.img-thumb {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    border-radius: 0.5rem;
}

/* Use flex-basis to keep thumbnails consistent inside flex card layouts */
.cover-thumb {
    flex: 0 0 120px; /* reserved width in card layout */
    width: 120px;
    height: 90px; /* visual crop area */
    display: block;
    border-radius: 0.5rem;
    overflow: hidden;
    background: transparent; /* remove grey tile under image */
    align-self: center; /* ensure the thumbnail aligns to center in flex parents */
}

/* The actual image should fill the container and preserve crop via object-fit */
.cover-thumb > img,
.cover-thumb picture img,
.cover-thumb .img-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Square variant for default/fallback logo thumbnails */
.cover-thumb--square {
    width: 120px;
    height: 120px;
    flex: 0 0 120px;
    border-radius: 8px;
    overflow: hidden;
}

.cover-thumb--square > img,
.cover-thumb--square picture img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* square source will not crop in a square box */
    display: block;
}

@media (max-width: 699px) {
    /* Keep the default icon square on mobile instead of stretching */
    .cover-thumb--square {
        width: 120px;
        height: 120px;
        flex-basis: 120px;
    }
}

/* Responsive adjustments for the index list */
@media (max-width: 699px) {
    .cover-thumb {
        width: 100%;
        height: 180px;
        flex-basis: auto;
    }
}

/* Theme toggle styling: make it a clean icon-only button */
#theme-toggle {
    background: transparent !important;
    border: none !important;
    padding: 0.25rem !important;
    margin: 0 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    color: var(--header-fg) !important;
    border-radius: 6px !important;
    cursor: pointer;
    width: 36px;
    height: 36px;
}

#theme-toggle:hover {
    background: color-mix(in srgb, var(--header-fg) 10%, transparent) !important;
    color: var(--primary) !important;
}

#theme-toggle:focus {
    outline: 3px solid rgba(3, 169, 244, 0.35);
    outline-offset: 2px;
}

#theme-toggle-icon {
    font-size: 1.05rem;
    line-height: 1;
}

/* Card/index layout: ensure consistent thumbnail behavior when transform injects extra wrappers */
.card .cover-thumb {
    flex: 0 0 120px;
    width: 120px;
    height: 90px;
}

.card .cover-thumb .with-image {
    margin: 0;
}

/* Normalize image wrapper paragraphs so they don't show extra space or color */
.cover-thumb .with-image,
.card .cover-thumb .with-image,
.card .cover-thumb p.with-image {
    margin: 0 !important;
    padding: 0 !important;
    background: transparent !important;
}

.card .cover-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Card base styles (index/post list) */
.card {
    display: flex;
    gap: 1rem;
    align-items: center; /* vertically center thumbnail and content */
    background: var(--surface);
    border-radius: 0.5rem;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
    margin-bottom: 1.25rem;
    padding: 1rem;
    flex-wrap: wrap;
}

.card-content {
    flex: 1 1 0;
    min-width: 220px;
}

.card h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1.15rem;
}

.card h3 a {
    color: var(--primary);
    text-decoration: none;
}

.card .excerpt p {
    margin: 0;
    color: var(--muted-color);
}

.tag-pill {
    font-size: 0.9rem;
    color: var(--primary);
    background: var(--tag-bg);
    padding: 0.2rem 0.7rem;
    border-radius: 1rem;
    text-decoration: none;
}

.signoff {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin: 2rem 0;
}

.signoff img {
    width: 250px;
    height: auto;
    border-radius: 50%;
}

.share-section {
    text-align: center;
    margin: 2rem 0;
}

.share-section svg {
    color: var(--primary);
}

.centered {
    width: 100%;
    text-align: center;
}

.strong {
    font-weight: bold;
}

.mb-2 {
    margin: 1rem 0;
}

/* Ensure grid layout for wider screens (keeps thumbnail column width) */
@media (min-width: 700px) {
    main > article.card {
        display: grid;
        grid-template-columns: 120px 1fr;
        align-items: center; /* center thumbnail cell vertically with content */
    }

    .card .cover-thumb {
        margin-right: 0;
    }
}

/* Improve spacing for smaller screens */
@media (max-width: 699px) {
    /* Header spacing stays compact on mobile as well */
    .site-nav {
        padding: 0.5rem 0;
    }

    .site-nav .site-logo img {
        height: 2.6rem;
        width: 2.6rem;
    }

    .post-main {
        margin: 1rem auto;
        padding: 0 0.75rem;
    }
}

/* Ensure square variant beats generic card thumbnail sizing */
.card .cover-thumb--square {
    width: 120px;
    height: 120px;
    flex: 0 0 120px;
}

@media (max-width: 699px) {
    .card .cover-thumb--square {
        width: 120px;
        height: 120px;
        flex-basis: 120px;
    }
}

/* Link color */
:where(a:not([role=button])), [role=link] {
    --pico-color: var(--link);
    --pico-underline: var(--link);
}

:where(a:not([role=button])):is([aria-current]:not([aria-current=false]),:hover,:active,:focus), [role=link]:is([aria-current]:not([aria-current=false]),:hover,:active,:focus) {
    --pico-color: var(--link-hover);
    --pico-underline: var(--link-hover);
}