:root {
  --unlv-scarlet: #b10202;
  --unlv-scarlet-dark: #8a0101;
  --ink: #1a1a1a;
  --gray-900: #222;
  --gray-700: #444;
  --gray-500: #6b6b6b;
  --gray-200: #e2e2e2;
  --gray-100: #f4f4f4;
  --white: #ffffff;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --max-width: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.55;
}
a { color: var(--unlv-scarlet); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.2; font-weight: 700; color: var(--ink); }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.5rem; }

#skiplink a {
  position: absolute; left: -999px; top: 0; background: var(--unlv-scarlet);
  color: #fff; padding: .5rem 1rem; z-index: 1000;
}
#skiplink a:focus { left: 0; }

/* Header */
#site-header { background: var(--unlv-scarlet); color: #fff; position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow); }
#site-header .container { display: flex; align-items: center; justify-content: space-between; padding: .9rem 1.5rem; }
#site-header .brand { color: #fff; font-size: 1.15rem; font-weight: 700; letter-spacing: .01em; }
#site-header .brand span { display: block; font-size: .7rem; font-weight: 400; opacity: .85; }
#site-header .brand:hover { text-decoration: none; }

/* Page layout: sidebar + main */
.page-layout {
  max-width: var(--max-width); margin: 0 auto; padding: 1.75rem 1.5rem 3rem;
  display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 2rem; align-items: start;
}
@media (max-width: 900px) {
  .page-layout { grid-template-columns: 1fr; }
}

/* Sidebar accordion nav */
.sidebar-nav {
  background: #fff; border: 1px solid var(--gray-200); border-radius: 12px;
  padding: .6rem; position: sticky; top: 84px;
}
@media (max-width: 900px) { .sidebar-nav { position: static; } }
.sidebar-nav ul { list-style: none; margin: 0; padding: 0; }
.nav-top-link {
  display: block; padding: .65rem .9rem; border-radius: 8px; font-weight: 600; color: var(--ink);
}
.nav-top-link.active { background: var(--gray-100); }
.nav-top-link:hover { background: var(--gray-100); text-decoration: none; }
.accordion-item { margin-top: .1rem; }
.accordion-trigger {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  background: none; border: none; padding: .65rem .9rem; font-size: .95rem; font-weight: 600;
  color: var(--ink); cursor: pointer; border-radius: 8px; text-align: left; font-family: inherit;
}
.accordion-trigger:hover { background: var(--gray-100); }
.accordion-trigger .chevron {
  transition: transform .2s ease; color: var(--unlv-scarlet); font-size: .75rem; margin-left: .5rem;
}
.accordion-trigger[aria-expanded="true"] .chevron { transform: rotate(180deg); }
.accordion-panel {
  max-height: 0; overflow: hidden; transition: max-height .25s ease; padding-left: .35rem;
}
.accordion-panel a {
  display: block; padding: .45rem .9rem; font-size: .87rem; font-weight: 400; color: var(--gray-700);
  border-radius: 6px;
}
.accordion-panel a:hover { background: var(--gray-100); color: var(--unlv-scarlet); text-decoration: none; }

/* Hero + terminal */
#hero {
  background: var(--ink); color: #fff; padding: 2.5rem 1.5rem 2.75rem; text-align: center; border-radius: 12px;
}
#hero h1 { color: #fff; font-size: 1.9rem; margin: 0 0 .4rem; }
#hero p { color: #ddd; margin: 0; font-size: 1rem; }
.terminal {
  max-width: 520px; margin: 1.5rem auto 0; background: #0d1117; border-radius: 10px;
  overflow: hidden; text-align: left; box-shadow: 0 4px 14px rgba(0,0,0,.35);
}
.terminal-bar { background: #161b22; padding: .5rem .75rem; display: flex; gap: 6px; }
.terminal-bar .dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.terminal-bar .dot.red { background: #ff5f56; }
.terminal-bar .dot.yellow { background: #ffbd2e; }
.terminal-bar .dot.green { background: #27c93f; }
.terminal-body {
  padding: 1rem 1.1rem; color: #c9d1d9; font-size: .85rem; min-height: 48px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
.terminal-body .prompt { color: #58a6ff; }
.terminal-body .cursor {
  display: inline-block; width: 7px; height: 1em; background: #c9d1d9; vertical-align: text-bottom;
  animation: blink 1s step-start infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.section { padding: 2.5rem 0; }
.section-alt { background: var(--gray-100); border-radius: 12px; }
.section h2 { font-size: 1.5rem; margin: 0 0 1.5rem; border-left: 5px solid var(--unlv-scarlet); padding-left: .75rem; }

.quicklinks-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 1rem; }
.quicklink-tile {
  display: flex; gap: .9rem; align-items: flex-start; border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 1rem 1.1rem; background: var(--white); color: var(--ink);
  transition: box-shadow .15s ease, transform .15s ease;
}
.quicklink-tile:hover { box-shadow: var(--shadow); transform: translateY(-2px); text-decoration: none; }
.quicklink-badge {
  flex: 0 0 auto; width: 40px; height: 40px; border-radius: 10px; background: var(--unlv-scarlet);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .72rem; letter-spacing: .02em;
}
.quicklink-tile h3 { margin: 0 0 .2rem; font-size: 1rem; }
.quicklink-tile p { margin: 0; font-size: .85rem; color: var(--gray-700); }

/* Faculty Resources feature card */
.resource-feature {
  display: flex; flex-wrap: wrap; gap: 1.25rem; align-items: center; justify-content: space-between;
  background: #fff; border: 1px solid var(--gray-200); border-left: 5px solid var(--unlv-scarlet);
  border-radius: var(--radius); padding: 1.4rem 1.6rem;
}
.resource-feature h3 { margin: 0 0 .4rem; font-size: 1.15rem; }
.resource-feature p { margin: 0; color: var(--gray-700); max-width: 55ch; }

.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem; }
.info-card { background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 1.25rem 1.4rem; }
.info-card h3 { margin-top: 0; font-size: 1.1rem; }
.info-card ul { padding-left: 1.1rem; margin: .5rem 0; }
.link-list { list-style: none; padding: 0; margin: 0; }
.link-list > li { margin-bottom: .5rem; }
.link-list ul { list-style: none; padding-left: 1.1rem; margin: .25rem 0 0; }

.btn-solid {
  display: inline-block; background: var(--unlv-scarlet); color: #fff; padding: .6rem 1.1rem;
  border-radius: var(--radius); font-weight: 600; text-align: center; white-space: nowrap;
}
.btn-solid:hover { background: var(--unlv-scarlet-dark); text-decoration: none; }

aside.contact-sidebar { display: flex; flex-direction: column; gap: 1.25rem; }
.contact-card { background: var(--ink); color: #fff; border-radius: var(--radius); padding: 1.25rem 1.4rem; }
.contact-card h3 { color: #fff; margin-top: 0; }
.contact-card ul { list-style: none; padding: 0; margin: 0; }
.contact-card a { color: #ffd9d9; }

.support-layout { display: grid; grid-template-columns: 2fr 1fr; gap: 2.5rem; align-items: start; }
@media (max-width: 800px) { .support-layout { grid-template-columns: 1fr; } }

#footer { background: var(--ink); color: #bbb; text-align: center; font-size: .82rem; padding: 1.75rem 1.5rem; margin-top: 2rem; }
#footer a { color: #fff; }

/* Optional hero photo hook: once you have new photography, add a background-image here
#hero { background: linear-gradient(rgba(0,0,0,.6), rgba(0,0,0,.6)), url("../images/hero.jpg") center/cover no-repeat; }
*/