/* ACM SIGMOD Blog — layout modelled on the SIGPLAN blog (Divi, boxed layout). */

:root {
  --page-bg: #dddddd;
  --box-bg: #ffffff;
  --band-bg: #f7f7f9;
  --text: #424242;
  --muted: #666666;
  --heading: #000000;
  --rule: #e2e2e2;
  --accent: #23177a;       /* SIGMOD logo indigo */
  --accent-hover: #3a2fb0;
  --link: #2f3fb5;
  --button-bg: #eeeeee;
  --footer-bg: #222222;
  --footer-text: #bbbbbb;
  /* Main text font. Any family loaded in _layouts/default.html (Google Fonts link) can be used;
     weights loaded there: 400 (regular), 500, 600, 700. */
  --heading-font: "Roboto Condensed", Helvetica, Arial, sans-serif;
  --body-font: "Source Sans 3", "Source Sans Pro", Helvetica, Arial, sans-serif;
  --body-weight: 400;
  --body-size: 16px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--page-bg);
  color: var(--text);
  font-family: var(--body-font);
  font-weight: var(--body-weight);
  font-size: var(--body-size);
  line-height: 1.7;
  /* Same as the SIGPLAN (Divi) theme: thinner, lighter glyphs on macOS. */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--heading-font);
  font-weight: 500;
  color: var(--heading);
  line-height: 1.2;
  margin: 0 0 10px;
}

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

.small { font-size: 14px; }

#page-container {
  max-width: 1080px;
  margin: 0 auto;
  background: var(--box-bg);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 80%;
  max-width: 1080px;
  margin: 0 auto;
}

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

#main-header {
  background: var(--box-bg);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo img { display: block; height: 45px; width: auto; }

#top-menu { display: flex; align-items: center; gap: 22px; }

#top-menu a {
  color: rgba(0, 0, 0, 0.6);
  font-size: 14px;
  font-weight: 600;
}
#top-menu a:hover { color: var(--accent); text-decoration: none; opacity: 0.8; }
#top-menu .search-link { display: inline-flex; color: var(--accent); }

.nav-toggle, .nav-toggle-label { display: none; }

/* ---------- Title band ---------- */

.title-band {
  background: var(--band-bg);
  border-bottom: 1px solid var(--rule);
  padding: 26px 0 22px;
}

.band-title {
  font-family: var(--heading-font);
  font-size: 26px;
  margin: 0 0 8px;
  line-height: 1.2;
}
.band-title a { color: var(--heading); }
.band-title a:hover { color: var(--accent); text-decoration: none; }

.band-description { margin: 0; font-size: 15px; color: var(--text); }

/* ---------- Content + sidebar ---------- */

#main-content { flex: 1; }

#content-area {
  display: flex;
  position: relative;
  padding-top: 58px;
}

#left-area {
  flex: 1;
  min-width: 0;
  padding: 0 5.5% 50px 0;
}

#sidebar {
  width: 25%;
  flex-shrink: 0;
  padding: 0 0 28px 30px;
  border-left: 1px solid var(--rule);
  font-size: 14px;
}

#sidebar .widget { margin-bottom: 30px; }

.widgettitle {
  font-size: 16px;
  text-transform: uppercase;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 12px;
}

#sidebar ul { list-style: none; margin: 0; padding: 0; }
#sidebar li { margin-bottom: 8px; line-height: 1.3; }
#sidebar li a { color: var(--heading); font-family: var(--heading-font); font-size: 15px; }
#sidebar li a:hover { color: var(--accent); }
#sidebar p { margin: 0 0 10px; line-height: 1.6; }
#sidebar select { width: 100%; padding: 6px; font: inherit; border: 1px solid #ccc; border-radius: 3px; background: #fff; }

.button {
  display: inline-block;
  padding: 8px 14px;
  background: var(--button-bg);
  color: var(--heading);
  font-family: var(--heading-font);
  font-size: 16px;
  border: 0;
  border-radius: 3px;
  cursor: pointer;
}
.button:hover { background: var(--accent); color: #fff; text-decoration: none; }

/* ---------- Post list ---------- */

.post-card {
  margin-bottom: 60px;
}
.post-card::after { content: ""; display: table; clear: both; }

.post-thumb {
  float: right;
  width: 300px;
  max-width: 45%;
  margin: 0 0 15px 25px;
}
.post-thumb img {
  display: block;
  width: 100%;
  aspect-ratio: 300 / 190;
  object-fit: cover;
  border-radius: 10px;
}

.entry-title { font-size: 26px; padding-bottom: 10px; margin: 0; }
.entry-title a { color: var(--heading); }
.entry-title a:hover { color: var(--accent); text-decoration: none; }

.post-meta { font-size: 14px; margin: 0 0 15px; }
.post-meta a { color: var(--heading); }
.post-meta a:hover { color: var(--accent); }

.post-excerpt { margin: 0 0 12px; }

.more-link { font-size: 15px; }

.archive-title { font-size: 30px; margin-bottom: 30px; }

.pagination {
  display: flex;
  justify-content: space-between;
  font-family: var(--heading-font);
  font-size: 16px;
}

/* ---------- Single post ---------- */

.single-post h1.entry-title { font-size: 30px; line-height: 1.15; }

.entry-content { font-size: 16px; }
.entry-content p { margin: 0 0 1.2em; }
.entry-content h2 { font-size: 26px; margin: 1.4em 0 0.5em; }
.entry-content h3 { font-size: 22px; margin: 1.4em 0 0.5em; }
.entry-content h4 { font-size: 18px; margin: 1.2em 0 0.4em; }
.entry-content h2 strong, .entry-content h3 strong, .entry-content h4 strong { font-weight: 500; }
.entry-content ul, .entry-content ol { padding-left: 1.4em; margin: 0 0 1.2em; }
.entry-content li { margin-bottom: 0.3em; }
.entry-content blockquote {
  margin: 1.4em 0;
  padding: 0.2em 0 0.2em 20px;
  border-left: 5px solid var(--accent);
  font-style: italic;
}
.entry-content pre {
  background: #f6f6f8;
  padding: 14px;
  overflow-x: auto;
  font-size: 14px;
  border-radius: 4px;
}
/* Wide tables scroll inside the column instead of spilling into the sidebar. */
.entry-content table { display: block; max-width: 100%; overflow-x: auto; border-collapse: collapse; margin: 0 0 1.2em; font-size: 15px; }
.entry-content iframe, .entry-content video { max-width: 100%; }
.entry-content td, .entry-content th { border: 1px solid var(--rule); padding: 6px 10px; }
.entry-content figure { margin: 1.2em 0; }
.entry-content figcaption { font-size: 14px; color: var(--muted); text-align: center; }
.entry-content .wp-block-image::after { content: ""; display: table; clear: both; }

/* WordPress alignment classes */
.alignleft { float: left; margin: 0.3em 1.5em 1em 0; }
.alignright { float: right; margin: 0.3em 0 1em 1.5em; }
.aligncenter { display: block; margin-left: auto; margin-right: auto; text-align: center; }
.has-text-align-left { text-align: left; }
.has-text-align-center { text-align: center; }
.has-text-align-right { text-align: right; }
.wp-block-columns { display: flex; gap: 2em; flex-wrap: wrap; }
.wp-block-column { flex: 1; min-width: 200px; }

/* "Media & text" block (mostly author bios): image beside text. Inline style may set the column split. */
.wp-block-media-text {
  display: grid;
  grid-template-columns: 50% 1fr;
  align-items: center;
  gap: 1.5em;
  margin: 1.5em 0;
}
.wp-block-media-text__media { margin: 0; }
.wp-block-media-text__media img { display: block; width: 100%; height: auto; }
.wp-block-media-text__content > :last-child { margin-bottom: 0; }

/* Galleries (block and classic list markup). */
.wp-block-gallery, .blocks-gallery-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1em;
  list-style: none;
  padding: 0;
  margin: 1.2em 0;
}
.wp-block-gallery > .blocks-gallery-grid { margin: 0; width: 100%; }
.blocks-gallery-item, .wp-block-gallery > figure.wp-block-image {
  flex: 1 1 calc(50% - 1em);
  margin: 0;
  list-style: none;
}
.wp-block-gallery.columns-1 .blocks-gallery-item,
.wp-block-gallery.columns-1 > figure.wp-block-image { flex-basis: 100%; }
.blocks-gallery-item figure { margin: 0; }
.blocks-gallery-item img, .wp-block-gallery figure img { display: block; width: 100%; height: auto; }
.blocks-gallery-caption { width: 100%; font-size: 14px; color: var(--muted); text-align: center; }

.author-box {
  clear: both;
  display: flex;
  gap: 16px;
  align-items: center;
  margin: 40px 0 20px;
  padding: 18px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.author-box img { width: 64px; height: 64px; object-fit: cover; border-radius: 50%; flex-shrink: 0; }
.author-box p { margin: 0; }
.author-name { font-family: var(--heading-font); font-size: 17px; color: var(--heading); }
.author-header { margin-top: 0; margin-bottom: 40px; border-top: 0; padding-top: 0; }
.author-header .archive-title { margin-bottom: 4px; }

.post-nav {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-family: var(--heading-font);
  margin: 20px 0;
}
.post-nav .next { text-align: right; margin-left: auto; }

.legacy-note { font-size: 13px; color: var(--muted); margin-top: 30px; }

/* Archived comments from the old WordPress blog */
.archived-comments { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--rule); }
.archived-comments h2 { font-size: 22px; margin-bottom: 4px; }
.archived-comments h2 .count { font-weight: 400; color: var(--muted); font-size: 18px; }
.comment { padding: 14px 0 6px; border-bottom: 1px solid var(--rule); }
.comment.depth-1 { margin-left: 28px; }
.comment.depth-2 { margin-left: 56px; }
.comment.depth-3 { margin-left: 84px; }
.comment-meta { margin: 0 0 4px; font-size: 15px; }
.comment-meta a { color: var(--heading); }
.comment-date { margin-left: 8px; font-size: 13px; color: var(--muted) !important; }
.comment-body p { margin: 0 0 10px; }
.comment-body { overflow-wrap: anywhere; }
@media (max-width: 560px) {
  .comment.depth-1 { margin-left: 14px; }
  .comment.depth-2 { margin-left: 28px; }
  .comment.depth-3 { margin-left: 42px; }
}

/* ---------- Archives / search ---------- */

.archive-month h2 { font-size: 20px; margin-top: 10px; }
.archive-month ul { padding-left: 1.2em; margin: 0 0 30px; }

.search-form { display: flex; gap: 10px; margin-bottom: 30px; }
.search-form input {
  flex: 1;
  min-width: 0;
  padding: 8px 10px;
  font: inherit;
  border: 1px solid #ccc;
  border-radius: 3px;
}

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

#main-footer { background: var(--footer-bg); color: var(--footer-text); }
#main-footer a { color: #ffffff; }

.footer-widgets {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 5.5%;
  padding: 50px 0 20px;
}
.footer-widget h4 { color: #ffffff; font-size: 18px; margin-bottom: 12px; }
.footer-widget p { font-size: 14px; margin: 0 0 20px; }
.footer-logo { padding-bottom: 20px; }
.footer-logo img { display: block; width: 100%; max-width: 300px; height: auto; }

#footer-bottom { background: rgba(0, 0, 0, 0.32); padding: 15px 0 5px; }
#footer-bottom p { margin: 0 0 10px; font-size: 14px; color: #666; }
#footer-bottom a { color: #888; }

/* ---------- Responsive ---------- */

@media (max-width: 980px) {
  .container { width: auto; margin: 0 16px; }
  #content-area { flex-direction: column; padding-top: 32px; }
  #left-area { padding-right: 0; }
  #sidebar { width: 100%; padding: 30px 0 0; border-left: 0; border-top: 1px solid var(--rule); }
  .footer-widgets { grid-template-columns: 1fr; }

  .nav-toggle-label {
    display: block;
    width: 28px;
    height: 22px;
    position: relative;
    cursor: pointer;
  }
  .nav-toggle-label span,
  .nav-toggle-label span::before,
  .nav-toggle-label span::after {
    position: absolute;
    left: 0;
    width: 28px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
    content: "";
  }
  .nav-toggle-label span { top: 9px; }
  .nav-toggle-label span::before { top: -8px; }
  .nav-toggle-label span::after { top: 8px; }
  #top-menu {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--box-bg);
    border-top: 3px solid var(--accent);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    padding: 10px 16px;
  }
  #top-menu a { padding: 8px 0; width: 100%; }
  .nav-toggle:checked ~ #top-menu { display: flex; }
}

@media (max-width: 560px) {
  .post-thumb { float: none; width: 100%; max-width: none; margin: 0 0 15px; }
  .entry-title { font-size: 22px; }
  .single-post h1.entry-title { font-size: 26px; }
  .alignleft, .alignright { float: none; margin: 1em auto; display: block; }
  .wp-block-media-text.is-stacked-on-mobile { grid-template-columns: 1fr !important; }
}