/* Reconfigurable Computing Laboratory
   Layout follows the original Drupal site (left menu, content, news on home).
   Colors come from the Iowa State primary palette (brandmarketing.iastate.edu).
   Plain CSS, no build step: edit the variables below to retheme. */

:root {
  --cardinal: #C8102E;       /* Pantone 186 C */
  --cardinal-dark: #9E0B23;
  --gold: #F1BE48;           /* Pantone 142 C */
  --gold-light: #FBEFD2;
  --ink: #222222;
  --muted: #5F5A55;
  --rule: #DDD8D1;
  --panel: #F6F4F0;
  --link: #A50D27;           /* cardinal darkened for text contrast */

  --serif: "Merriweather", Georgia, "Times New Roman", serif;
  --sans: "Source Sans 3", "Source Sans Pro", "Helvetica Neue", Arial, sans-serif;

  --max: 1140px;
  --nav-w: 200px;
  --side-w: 270px;
}

/* ---- Base ------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--sans);
}
img { max-width: 100%; height: auto; }
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--cardinal-dark); }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }
[hidden] { display: none !important; }

.wrap {
  max-width: var(--max); margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 10;
  background: var(--gold); color: var(--ink); padding: 8px 12px;
}
.skip-link:focus { left: 8px; }

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 700; line-height: 1.25; color: var(--ink); }
h1 { font-size: 1.75rem; margin: 0 0 1rem; }
h2 { font-size: 1.3rem; margin: 2rem 0 .75rem; }
h3 { font-size: 1.1rem; margin: 1.5rem 0 .5rem; }
p, ul, ol, table { margin: 0 0 1rem; }

/* ---- Header ----------------------------------------------------------- */
.site-header {
  background: var(--cardinal);
  border-bottom: 5px solid var(--gold);
  color: #fff;
}
.header-inner {
  display: flex; flex-direction: column; gap: 6px;
  padding-top: 22px; padding-bottom: 20px;
}
.isu-name {
  font-family: var(--serif); font-variant: small-caps; letter-spacing: .02em;
  text-decoration: none; line-height: 1;
}
.site-header .isu-name { color: #fff; font-size: 1.9rem; align-self: flex-start; }
.site-header .isu-name:hover { color: var(--gold-light); }
.site-title {
  align-self: flex-start;
  color: var(--gold); text-decoration: none;
  font: 600 1.2rem/1.3 var(--sans); letter-spacing: .03em;
}
.site-title:hover { color: #fff; }

/* Official ISU wordmark (SVG). The file is the red version; in the cardinal header it is
   shown in white (an approved wordmark color) with a CSS filter. Heights keep the capital
   letters well above ISU's minimum size; the margins give the required clear space. */
.isu-wordmark { display: block; width: auto; }
.site-header .isu-wordmark { height: 34px; filter: brightness(0) invert(1); margin: 4px 0 10px; }
.site-footer .isu-wordmark { height: 30px; }

/* ---- Page grid -------------------------------------------------------- */
.page-grid {
  display: grid;
  grid-template-columns: var(--nav-w) minmax(0, 1fr);
  gap: 40px;
  padding-top: 32px; padding-bottom: 48px;
}
.has-sidebar .page-grid { grid-template-columns: var(--nav-w) minmax(0, 1fr) var(--side-w); }

/* ---- Side navigation -------------------------------------------------- */
.side-nav ul { list-style: none; margin: 0; padding: 0; }
.side-nav > ul { border-top: 3px solid var(--cardinal); }
.side-nav li { border-bottom: 1px solid var(--rule); }
.side-nav a {
  display: block; padding: 9px 10px 9px 12px;
  color: var(--ink); text-decoration: none; font-weight: 600;
  border-left: 4px solid transparent;
}
.side-nav a:hover { background: var(--panel); color: var(--cardinal); }
.side-nav li.active > a { color: var(--cardinal); border-left-color: var(--gold); background: var(--panel); }
.side-nav li ul li { border-bottom: 0; border-top: 1px solid var(--rule); }
.side-nav li ul a { font-weight: 400; padding: 6px 10px 6px 28px; font-size: .97rem; }
.side-nav li ul li.current > a { color: var(--cardinal); font-weight: 600; }

/* ---- Content ---------------------------------------------------------- */
.content { min-width: 0; }
.page-title { padding-bottom: .5rem; border-bottom: 1px solid var(--rule); }
.content h2 {
  display: inline-block; min-width: 40%;
  padding-bottom: .35rem; border-bottom: 3px solid var(--gold);
}

/* Sponsor logos on the home page: a Markdown paragraph tagged {: .sponsors} */
.content p.sponsors {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 32px; margin: 2rem 0 0; padding: 20px 0 0; border-top: 1px solid var(--rule);
}
.content p.sponsors img { display: inline; max-height: 60px; width: auto; border: 0; margin: 0; }

/* Tables written in Markdown (e.g. Alumni) */
.content table { width: 100%; border-collapse: collapse; font-size: .97rem; margin: 0 0 1rem; }
.content th, .content td { text-align: left; vertical-align: top; padding: 8px 10px; border-bottom: 1px solid var(--rule); }
.content thead th { background: var(--cardinal); color: #fff; font-weight: 600; white-space: nowrap; }
.content tbody tr:nth-child(even) { background: var(--panel); }
.alumni .content td:first-child { white-space: nowrap; }

/* A plain Markdown image on its own line: shown above the text that follows */
.content p > img:only-child { display: block; max-width: min(100%, 340px); height: auto; margin: .25rem 0 .25rem; }

/* Side-by-side blocks written in Markdown pages as <div class="..." markdown="1">.
   An image tagged {: .photo} floats to the right of the text. */
.content img.photo { float: right; width: 220px; max-width: 45%; height: auto; margin: 0 0 12px 20px; border: 1px solid var(--rule); }
.facility, .feature { overflow: hidden; margin: 0 0 1.75rem; }
.facility h3, .feature h2 { margin-top: 0; }
.feature img.photo { width: 225px; }

/* Faculty: photo on the left, text on the right */
.person { display: grid; grid-template-columns: 128px minmax(0, 1fr); gap: 20px; margin: 0 0 2rem; }
.person img { width: 128px; display: block; border: 1px solid var(--rule); }
.person p { margin: 0 0 .5rem; }
.person h3 { margin: 0 0 .25rem; }

/* Publications (generated by jekyll-scholar from publications/rcl.bib) */
.btn {
  display: inline-block; font: 600 .92rem/1.2 var(--sans); text-decoration: none;
  padding: 7px 14px; border: 1px solid var(--rule); border-radius: 3px;
  background: #fff; color: var(--ink); cursor: pointer;
}
.btn:hover { border-color: var(--cardinal); color: var(--cardinal); }
.btn.primary { background: var(--cardinal); border-color: var(--cardinal); color: #fff; }
.btn.primary:hover { background: var(--cardinal-dark); color: #fff; }

.pub-toolbar { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; margin: 0 0 .75rem; }
.pub-controls { display: flex; flex-wrap: wrap; gap: 8px; }
.pub-controls button {
  font: 600 .9rem var(--sans); padding: 5px 12px; cursor: pointer;
  border: 1px solid var(--rule); background: #fff; color: var(--ink); border-radius: 3px;
}
.pub-controls button[aria-pressed="true"] { background: var(--cardinal); border-color: var(--cardinal); color: #fff; }
.year-jump { font-size: .95rem; margin-bottom: .5rem; }
.year-jump a { margin-right: .4rem; }

ul.bibliography { list-style: none; padding: 0; }
ul.bibliography > li { margin: 0 0 1rem; padding-left: 14px; border-left: 3px solid var(--gold-light); }
ul.bibliography > li:hover { border-left-color: var(--gold); }
ul.bibliography .details { display: none; }   /* the title already links to the paper page */
.pub .title { font-weight: 600; color: var(--ink); text-decoration: none; }
.pub .title:hover { color: var(--cardinal); text-decoration: underline; }
a.author { color: inherit; text-decoration: none; }
a.author:hover { color: var(--cardinal); text-decoration: underline; }
.author-filter {
  background: var(--gold-light); border-left: 4px solid var(--gold); padding: 10px 14px; margin: 0 0 1rem;
}
.author-filter a { font-weight: 600; margin-left: .75rem; white-space: nowrap; }
.pub-links { white-space: nowrap; }
.pub-links a {
  font-size: .78rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; text-decoration: none;
  border: 1px solid var(--rule); border-radius: 3px; padding: 1px 6px; margin-left: 4px; color: var(--muted);
}
.pub-links a:hover { border-color: var(--cardinal); color: var(--cardinal); }

/* Single paper page */
.pub-meta { border-collapse: collapse; width: 100%; margin-bottom: 1.25rem; }
.pub-meta th, .pub-meta td { text-align: left; vertical-align: top; padding: 7px 10px; border-bottom: 1px solid var(--rule); }
.pub-meta th { width: 9.5rem; color: var(--muted); font-weight: 600; white-space: nowrap; }
.pub-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 .5rem; }
.abstract { max-width: 70ch; white-space: pre-line; }
.bibtex { position: relative; }
.bibtex pre {
  margin: 0; overflow-x: auto; background: var(--panel); border: 1px solid var(--rule);
  padding: 14px 72px 14px 16px; font: .85rem/1.5 ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  white-space: pre-wrap; overflow-wrap: anywhere; text-indent: 0;
}
.bibtex .copy {
  position: absolute; top: 8px; right: 8px; font: 600 .8rem var(--sans);
  padding: 3px 10px; border: 1px solid var(--rule); background: #fff; border-radius: 3px; cursor: pointer;
}
.back { margin-top: 1.5rem; }

.note { background: var(--gold-light); border-left: 4px solid var(--gold); padding: 12px 16px; margin: 0 0 1.5rem; }

/* ---- News sidebar ----------------------------------------------------- */
.news-block {
  align-self: start;
  background: var(--panel); border-top: 3px solid var(--cardinal); padding: 16px 18px 18px;
}
.news-block h2 { font-size: 1.1rem; margin: 0 0 .5rem; }
.news-block ul { list-style: none; margin: 0 0 .75rem; padding: 0; }
.news-block li { padding: 8px 0; border-bottom: 1px solid var(--rule); font-size: .95rem; line-height: 1.45; }
.news-block li:last-child { border-bottom: 0; }
.news-block time { display: block; font-weight: 700; color: var(--cardinal); font-size: .85rem; }
.news-block .more { font-weight: 600; font-size: .95rem; }

/* ---- Footer (light ISU style) ---------------------------------------- */
.site-footer { background: var(--panel); border-top: 3px solid var(--gold); color: var(--muted); font-size: .95rem; }
.site-footer a { color: var(--ink); }
.footer-inner {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; gap: 20px 40px;
  padding-top: 28px; padding-bottom: 28px;
}
.site-footer .isu-name { color: var(--cardinal); font-size: 1.6rem; }
.footer-contact { text-align: right; }
.footer-contact p { margin: 0; line-height: 1.55; }
.footer-contact strong { color: var(--ink); }
.footer-copy { margin-top: 10px !important; font-size: .85rem; }

/* ---- Responsive ------------------------------------------------------- */
@media (max-width: 980px) {
  .has-sidebar .page-grid { grid-template-columns: var(--nav-w) minmax(0, 1fr); }
  .has-sidebar .news-block { grid-column: 2; }
}
@media (max-width: 720px) {
  .page-grid, .has-sidebar .page-grid { grid-template-columns: minmax(0, 1fr); gap: 24px; padding-top: 20px; }
  .has-sidebar .news-block { grid-column: auto; }
  .site-header .isu-name { font-size: 1.5rem; }
  .site-header .isu-wordmark { height: 26px; }
  h1 { font-size: 1.45rem; }
  .pub-meta th { width: 6.5rem; }
  .side-nav > ul { display: flex; flex-wrap: wrap; gap: 6px; border-top: 0; }
  .side-nav > ul > li { border: 0; }
  .side-nav > ul > li > a { border: 1px solid var(--rule); border-radius: 3px; padding: 6px 10px; }
  .side-nav li.active > a { border-color: var(--gold); }
  .footer-contact { text-align: left; }
  .side-nav li.active { display: contents; }
  .side-nav li.active > ul { flex-basis: 100%; display: flex; flex-wrap: wrap; gap: 6px; }
  .side-nav li ul li { border: 0; }
  .side-nav li ul a { padding: 4px 10px; border: 1px solid var(--rule); border-radius: 3px; font-size: .9rem; }
  .content table { display: block; overflow-x: auto; }
  .alumni .content td:nth-child(4) { min-width: 240px; }
  .content img.photo { float: none; display: block; max-width: 100%; margin: 0 0 12px; }
  .person { grid-template-columns: 88px minmax(0, 1fr); gap: 14px; }
  .person img { width: 88px; }
}

/* News page */
.news-list { list-style: none; padding: 0; }
.news-list li { padding: 12px 0; border-bottom: 1px solid var(--rule); }
.news-list time, .news-date { display: block; font-weight: 700; color: var(--cardinal); font-size: .9rem; }
.news-list a { font-weight: 600; }
.news-list p { margin: .35rem 0 0; color: var(--muted); }
.news-block a:not(.more) { color: var(--ink); text-decoration: none; }
.news-block a:not(.more):hover { color: var(--cardinal); text-decoration: underline; }

/* Publications: sort + filter rows */
.pub-controls { align-items: center; }
.pub-controls .label { font-size: .85rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); margin-right: 2px; min-width: 4.2rem; }
.pub-controls button[data-dir="asc"]::after { content: " \25B2"; font-size: .7em; }
.pub-controls button[data-dir="desc"]::after { content: " \25BC"; font-size: .7em; }
.filter-row { margin: 0 0 1rem; }
.filter-row button[aria-pressed="true"] { background: var(--gold-light); border-color: var(--gold); color: var(--ink); }

/* Projects index */
.project-list { display: grid; gap: 14px; margin-top: 1rem; }
.project-card {
  display: grid; gap: 4px; padding: 14px 16px 16px; text-decoration: none; color: var(--ink);
  border: 1px solid var(--rule); border-left: 4px solid var(--gold); background: #fff;
}
.project-card:hover { border-left-color: var(--cardinal); background: var(--panel); }
.project-short { font: 700 .8rem var(--sans); letter-spacing: .05em; text-transform: uppercase; color: var(--cardinal); }
.project-title { font: 700 1.05rem/1.35 var(--serif); }
.project-summary { color: var(--muted); font-size: .97rem; }

/* News pages */
.news-list .news-date { text-decoration: none; }
.news-list li p { margin: .25rem 0 0; color: var(--ink); }
.news-body p { max-width: 70ch; }
@media (max-width: 720px) {
}
.news-list li p a { font-weight: 400; }