/* research.logangraves.com styles */

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --research-border-color: #f0f0f0;
}

@media (prefers-color-scheme: dark) {
    :root {
        --research-border-color: #1e1e1e;
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    font-size: var(--main-font-size);
    background-color: var(--background-color);
    color: var(--color);
    line-height: 1.7;
}

#research-wrap {
    max-width: 75ch;
    margin: 0 auto;
    padding: 4rem 2rem 6rem;
}

/* ---- Header / nav ---- */

#research-header {
    margin-bottom: 3.5rem;
    border-bottom: 1px solid var(--research-border-color);
    padding-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

#research-logo {
    text-decoration: none;
    border-bottom: none;
    display: flex;
    align-items: center;
    line-height: 1;
}

#research-logo .dropcap {
    font-size: 1.6em;
    float: none;
    padding-top: 0;
    padding-right: 0;
    color: transparent;
}

#research-site-title {
    font-size: 0.95em;
    line-height: 1;
}

#research-title-sub,
#research-title-main {
    text-decoration: none;
    border-bottom: none;
    transition: color 0.15s;
}

#research-title-sub {
    color: var(--color);
}

#research-title-main {
    color: var(--dark-text-color);
}

#research-title-sub:hover {
    color: var(--dark-text-color);
}

#research-title-main:hover {
    color: var(--color);
}

/* ---- Homepage ---- */

#research-intro {
    margin-bottom: 3rem;
}

#research-intro h1 {
    font-family: var(--serif-font);
    font-size: 2.2em;
    font-weight: 400;
    margin-bottom: 0.6rem;
    letter-spacing: -0.01em;
}

#research-intro p {
    color: var(--dark-text-color);
    font-size: 0.95em;
    max-width: 54ch;
}

/* ---- Index list ---- */

#research-index-heading {
    font-family: var(--serif-font);
    font-size: 0.75em;
    font-weight: 400;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--dark-text-color);
    margin-bottom: 1.25rem;
}

#research-post-list {
    list-style: none;
    padding-left: 0;
}

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

.research-post-item:first-child {
    border-top: 1px solid var(--border-background-color);
}

.research-post-title a {
    font-family: var(--serif-font);
    font-size: 1em;
    font-weight: 400;
    color: var(--color);
    text-decoration: none;
    border-bottom: none;
    transition: color 0.15s;
}

.research-post-title a:hover {
    color: var(--dark-text-color);
}

.research-post-meta {
    display: flex;
    gap: 1rem;
    align-items: baseline;
    margin-top: 0.2rem;
}

.research-post-date {
    font-size: 0.78em;
    color: var(--dark-text-color);
    font-variant-numeric: tabular-nums;
}

.research-post-desc {
    font-size: 0.88em;
    color: var(--dark-text-color);
    margin-top: 0.25rem;
    line-height: 1.5;
}

/* ---- Post page ---- */

#research-post-header {
    margin-bottom: 2.5rem;
}

#research-post-title {
    font-family: var(--serif-font);
    font-size: 2.4em;
    font-weight: 400;
    letter-spacing: -0.015em;
    line-height: 1.3;
    margin-bottom: 0.6rem;
}

#research-post-meta-line {
    font-size: 0.82em;
    color: var(--dark-text-color);
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

#research-post-meta-line a {
    color: var(--dark-text-color);
    text-decoration: none;
    border-bottom: 1px solid var(--border-background-color);
    transition: border-color 0.15s;
}

#research-post-meta-line a:hover {
    border-color: var(--dark-text-color);
}

#research-post-meta-line .sep {
    color: var(--border-background-color);
}

/* ---- Post content ---- */

#research-post-content {
    border-top: 1px solid var(--border-background-color);
    padding-top: 2rem;
}

#research-post-content h1,
#research-post-content h2,
#research-post-content h3,
#research-post-content h4,
#research-post-content h5 {
    font-family: var(--serif-font);
    font-weight: 400;
    margin-top: 2rem;
    margin-bottom: 0.5rem;
    line-height: 1.35;
}

#research-post-content h1 { font-size: 1.6em; }
#research-post-content h2 { font-size: 1.35em; }
#research-post-content h3 { font-size: 1.15em; font-style: italic; }

#research-post-content p {
    margin-bottom: 1.1rem;
}

#research-post-content a {
    color: var(--link-color);
    text-decoration: none;
    border-bottom: 1px solid var(--link-underline-color);
    transition: border-color 0.15s, color 0.15s;
}

#research-post-content a:hover {
    color: var(--color);
    border-color: var(--color);
}

#research-post-content blockquote {
    border-left: 2px solid var(--border-background-color);
    margin: 1.2rem 0;
    padding: 0.2rem 1rem;
    font-style: italic;
    color: var(--dark-text-color);
}

#research-post-content code {
    font-family: var(--mono-font);
    font-size: 0.85em;
    background-color: var(--code-background-color);
    color: var(--code-foreground-color);
    padding: 0.1em 0.35em;
    border-radius: 3px;
}

#research-post-content pre {
    background-color: var(--code-background-color);
    border-radius: 4px;
    padding: 1rem;
    overflow-x: auto;
    margin: 1.2rem 0;
}

#research-post-content pre code {
    background: none;
    padding: 0;
    font-size: 0.82em;
}

#research-post-content table {
    border-collapse: collapse;
    width: 100%;
    margin: 1.2rem 0;
    font-size: 0.9em;
}

#research-post-content th,
#research-post-content td {
    border: 1px solid var(--table-border-color);
    padding: 0.4rem 0.75rem;
    text-align: left;
}

#research-post-content th {
    font-weight: 500;
    background-color: var(--subtle-background-darker);
}

/* Footnote divider */

#research-post-content .footnote hr {
    margin-top: 2.5rem;
    margin-bottom: 1.25rem;
}

/* Post age notice */
#research-post-age {
    font-size: 0.82em;
    color: var(--dark-text-color);
    background-color: var(--subtle-background-darker);
    border: 1px solid var(--border-background-color);
    border-radius: 4px;
    padding: 0.5rem 0.85rem;
    margin-bottom: 1.5rem;
}

/* ---- Footer ---- */

#research-footer {
    margin-top: 4rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--research-border-color);
    font-size: 0.82em;
    color: var(--dark-text-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

#research-footer a {
    color: var(--dark-text-color);
    text-decoration: none;
    border-bottom: 1px solid var(--border-background-color);
    transition: border-color 0.15s;
}

#research-footer a:hover {
    border-color: var(--dark-text-color);
}

/* ---- 404 ---- */

#research-404 {
    padding: 4rem 0;
}

#research-404 h1 {
    font-family: var(--serif-font);
    font-size: 1.2em;
    font-weight: 400;
    margin-bottom: 0.75rem;
}

#research-404 p {
    color: var(--dark-text-color);
    font-size: 0.9em;
}

/* ---- Lists ---- */

ul, ol {
    padding-left: 1.5em;
    margin-bottom: 1rem;
}

li {
    margin-bottom: 0.3rem;
}

li > ul,
li > ol {
    margin-top: 0.3rem;
    margin-bottom: 0;
}

/* ---- MathJax ---- */

mjx-container {
    max-width: 100%;
    overflow-x: auto;
}

mjx-container[display="true"] {
    display: block !important;
    text-align: center !important;
    overflow-x: auto;
    margin: 1.25rem auto !important;
}

/* ---- Mobile ---- */

@media (max-width: 600px) {
    body {
        font-size: var(--main-font-size-mobile);
    }

    #research-wrap {
        padding: 2.5rem 1.25rem 4rem;
    }

    #research-post-title {
        font-size: 1.3em;
    }
}