/* ================================================================
   JRC 2027 — Site Stylesheet
   Layout: fixed left sidebar + scrollable content area
   Design: UConn navy + white, Playfair Display + Inter
   ================================================================ */

/* ── Design Tokens ─────────────────────────────────────────────── */
:root {
  /* Palette */
  --clr-navy:        hsl(219, 100%, 20%);
  --clr-navy-dark:   hsl(220, 100%, 12%);
  --clr-navy-deeper: hsl(220, 100%,  8%);
  --clr-navy-mid:    hsl(219,  70%, 30%);
  --clr-navy-tint:   hsl(219,  55%, 95%);
  --clr-red:         hsl(349,  76%, 40%);
  --clr-gold:        hsl( 42, 100%, 52%);

  --clr-text:        hsl(220, 18%, 14%);
  --clr-text-muted:  hsl(220, 10%, 44%);
  --clr-bg:          hsl(  0,  0%, 100%);
  --clr-surface:     hsl(220, 22%, 97%);
  --clr-border:      hsl(220, 18%, 88%);

  /* Typography */
  --ff-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --ff-body:    'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;

  --fs-xs:   0.72rem;
  --fs-sm:   0.85rem;
  --fs-base: 1rem;
  --fs-md:   1.0625rem;
  --fs-lg:   1.25rem;
  --fs-xl:   1.5rem;
  --fs-2xl:  1.875rem;
  --fs-3xl:  2.25rem;
  --fs-4xl:  3rem;
  --fs-5xl:  3.75rem;

  --lh-tight:  1.25;
  --lh-snug:   1.4;
  --lh-normal: 1.65;

  /* Spacing */
  --sp-1: 0.25rem;  --sp-2: 0.5rem;   --sp-3: 0.75rem;
  --sp-4: 1rem;     --sp-5: 1.25rem;  --sp-6: 1.5rem;
  --sp-8: 2rem;     --sp-10: 2.5rem;  --sp-12: 3rem;
  --sp-16: 4rem;    --sp-20: 5rem;    --sp-24: 6rem;

  /* Layout */
  --sidebar-w:     240px;
  --mobile-bar-h:  60px;
  --content-max-w: 840px;
  --gutter:        clamp(1.5rem, 4vw, 3rem);

  /* Radii */
  --r-sm: 4px;  --r-md: 8px;  --r-lg: 14px;  --r-full: 9999px;

  /* Shadows */
  --sh-sm: 0 1px 4px hsla(219, 40%, 10%, .08);
  --sh-md: 0 4px 14px hsla(219, 40%, 10%, .10);
  --sh-lg: 0 10px 36px hsla(219, 40%, 10%, .14);

  /* Transitions */
  --ease: cubic-bezier(.4, 0, .2, 1);
  --dur-fast: 150ms;
  --dur-base: 220ms;
}

/* ── Reset ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--ff-body);
  font-size: var(--fs-md);
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: var(--lh-normal);
  -webkit-font-smoothing: antialiased;
}
img, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button { font: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

/* ── Skip link ──────────────────────────────────────────────────── */
.skip-link {
  position: fixed;
  top: -100%;
  left: var(--sp-4);
  padding: var(--sp-2) var(--sp-4);
  background: var(--clr-navy);
  color: #fff;
  font-size: var(--fs-sm);
  font-weight: 600;
  border-radius: var(--r-md);
  text-decoration: none;
  z-index: 9999;
  transition: top var(--dur-fast) var(--ease);
}
.skip-link:focus { top: var(--sp-4); }

/* ════════════════════════════════════════════════════════════════
   LAYOUT SHELL
   ════════════════════════════════════════════════════════════════ */
.layout {
  display: flex;
  min-height: 100vh;
}

/* ── Page wrap (everything right of sidebar) ────────────────────── */
.page-wrap {
  flex: 1;
  min-width: 0;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
}

/* ════════════════════════════════════════════════════════════════
   SIDEBAR
   ════════════════════════════════════════════════════════════════ */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: var(--sidebar-w);
  height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--clr-navy-dark);
  display: flex;
  flex-direction: column;
  z-index: 400;
  scrollbar-width: thin;
  scrollbar-color: hsla(0,0%,100%,.15) transparent;
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: hsla(0,0%,100%,.15); border-radius: 2px; }

/* Sidebar top / brand */
.sidebar__top {
  padding: var(--sp-6) var(--sp-5) var(--sp-5);
  border-bottom: 1px solid hsla(0,0%,100%,.08);
  flex-shrink: 0;
}

.sidebar-brand {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  text-decoration: none;
}

.sidebar-brand__initials {
  font-family: var(--ff-heading);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: #fff;
  letter-spacing: .03em;
  transition: color var(--dur-fast) var(--ease);
}
.sidebar-brand:hover .sidebar-brand__initials { color: var(--clr-gold); }

.sidebar-brand__year {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--clr-gold);
  line-height: 1;
}

.sidebar-brand__name {
  font-size: var(--fs-xs);
  font-weight: 400;
  color: hsla(0,0%,100%,.45);
  line-height: 1.4;
  margin-top: var(--sp-1);
}

/* Sidebar nav */
.sidebar-nav {
  flex: 1;
  padding: var(--sp-4) 0 var(--sp-4);
}

.sidebar-nav__label {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .10em;
  text-transform: uppercase;
  color: hsla(0,0%,100%,.30);
  padding: var(--sp-2) var(--sp-5) var(--sp-3);
}

.sidebar-nav-list { display: flex; flex-direction: column; gap: 2px; }

.sidebar-nav-link {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-5);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: hsla(0,0%,100%,.62);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition:
    color     var(--dur-fast) var(--ease),
    background var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease);
  line-height: 1.35;
}
.sidebar-nav-link:hover {
  color: #fff;
  background: hsla(0,0%,100%,.07);
  border-left-color: hsla(0,0%,100%,.25);
}
.sidebar-nav-link.is-active {
  color: #fff;
  background: hsla(0,0%,100%,.10);
  border-left-color: var(--clr-gold);
  font-weight: 600;
}

.sidebar-nav-icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  opacity: .75;
  transition: opacity var(--dur-fast) var(--ease);
}
.sidebar-nav-link:hover .sidebar-nav-icon,
.sidebar-nav-link.is-active .sidebar-nav-icon { opacity: 1; }

/* Sidebar bottom meta */
.sidebar__bottom {
  padding: var(--sp-5);
  border-top: 1px solid hsla(0,0%,100%,.08);
  flex-shrink: 0;
}

.sidebar-meta-item {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-xs);
  color: hsla(0,0%,100%,.38);
  margin-bottom: var(--sp-2);
  line-height: 1.4;
}

.sidebar-meta-icon {
  width: .85rem;
  height: .85rem;
  flex-shrink: 0;
  opacity: .6;
}

.sidebar-sponsors {
  margin-top: var(--sp-3);
  font-size: var(--fs-xs);
  color: hsla(0,0%,100%,.22);
  letter-spacing: .03em;
  line-height: 1.5;
}

/* ════════════════════════════════════════════════════════════════
   MOBILE HEADER (hidden on desktop)
   ════════════════════════════════════════════════════════════════ */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  z-index: 300;
  height: var(--mobile-bar-h);
  background: var(--clr-navy-dark);
  padding: 0 var(--sp-4);
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 2px 12px hsla(220, 60%, 8%, .35);
  flex-shrink: 0;
}

.mobile-brand {
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
  text-decoration: none;
}
.mobile-brand__abbr {
  font-family: var(--ff-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
}
.mobile-brand__year {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .10em;
  color: var(--clr-gold);
}

/* Hamburger */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: var(--sp-2);
  border-radius: var(--r-sm);
  transition: background var(--dur-fast) var(--ease);
}
.nav-toggle:hover { background: hsla(0,0%,100%,.10); }
.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--dur-base) var(--ease),
              opacity   var(--dur-base) var(--ease);
}
.nav-toggle.is-open .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle.is-open .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Sidebar overlay (mobile) */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: hsla(220, 40%, 5%, .55);
  z-index: 390;
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease);
}
.sidebar-overlay--visible { opacity: 1; }

/* ════════════════════════════════════════════════════════════════
   HERO (home page)
   ════════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: clamp(420px, 58vh, 640px);
  display: flex;
  align-items: center;
  overflow: hidden;
  flex-shrink: 0;
}

.hero__bg {
  position: absolute;
  inset: 0;
}

.hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 65%;
  filter: saturate(.82) brightness(.70);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    hsla(219, 100%, 10%, .82) 0%,
    hsla(219, 80%,  18%, .62) 55%,
    hsla(219, 60%,  24%, .38) 100%
  );
}

.hero__body {
  position: relative;
  z-index: 1;
  padding: var(--sp-16) var(--gutter);
  max-width: calc(var(--content-max-w) + 2 * var(--gutter));
}

.hero__eyebrow {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--clr-gold);
  margin-bottom: var(--sp-4);
}

.hero__title {
  font-family: var(--ff-heading);
  font-size: clamp(var(--fs-2xl), 4.5vw, var(--fs-5xl));
  font-weight: 700;
  line-height: var(--lh-tight);
  color: #fff;
  margin-bottom: var(--sp-8);
  text-shadow: 0 2px 20px hsla(219, 60%, 6%, .45);
  max-width: 18ch;
}

.hero__pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-bottom: var(--sp-10);
}

.hero__pill {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  background: hsla(0,0%,100%,.13);
  backdrop-filter: blur(8px);
  border: 1px solid hsla(0,0%,100%,.22);
  border-radius: var(--r-full);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: #fff;
  letter-spacing: .01em;
}

.hero__pill-icon { width: 1em; height: 1em; flex-shrink: 0; opacity: .9; }

.hero__actions { display: flex; flex-wrap: wrap; gap: var(--sp-3); }

/* ── Buttons ────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-6);
  border-radius: var(--r-md);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: .02em;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition:
    background  var(--dur-fast) var(--ease),
    color       var(--dur-fast) var(--ease),
    box-shadow  var(--dur-fast) var(--ease),
    transform   var(--dur-fast) var(--ease);
}
.btn:hover  { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--clr-red);
  color: #fff;
  box-shadow: 0 2px 14px hsla(349, 76%, 40%, .42);
}
.btn--primary:hover {
  background: hsl(349, 76%, 34%);
  box-shadow: 0 4px 20px hsla(349, 76%, 40%, .52);
}

.btn--ghost {
  background: hsla(0,0%,100%,.13);
  backdrop-filter: blur(8px);
  color: #fff;
  border: 1px solid hsla(0,0%,100%,.30);
}
.btn--ghost:hover { background: hsla(0,0%,100%,.22); border-color: hsla(0,0%,100%,.50); }

/* ════════════════════════════════════════════════════════════════
   PAGE BANNER (non-home)
   ════════════════════════════════════════════════════════════════ */
.page-banner {
  background: var(--clr-navy-dark);
  border-bottom: 3px solid var(--clr-red);
  flex-shrink: 0;
}

.page-banner__inner {
  padding: var(--sp-10) var(--gutter) var(--sp-8);
  max-width: calc(var(--content-max-w) + 2 * var(--gutter));
}

.page-banner__title {
  font-family: var(--ff-heading);
  font-size: clamp(var(--fs-2xl), 3.5vw, var(--fs-4xl));
  font-weight: 700;
  color: #fff;
  line-height: var(--lh-tight);
}

/* ════════════════════════════════════════════════════════════════
   MAIN CONTENT
   ════════════════════════════════════════════════════════════════ */
.site-main {
  flex: 1;
  padding: var(--sp-12) var(--gutter) var(--sp-20);
}

.content-wrap {
  max-width: calc(var(--content-max-w) + 2 * var(--gutter));
  padding-inline: var(--gutter);
}

/* Override for site-main which already has gutter padding */
.site-main > .content-wrap { padding-inline: 0; }

/* ── Prose / Rich text ──────────────────────────────────────────── */
.prose { max-width: var(--content-max-w); }

/* Headings */
.prose h2 {
  font-family: var(--ff-heading);
  font-size: clamp(var(--fs-xl), 2.2vw, var(--fs-2xl));
  font-weight: 700;
  color: var(--clr-navy);
  line-height: var(--lh-snug);
  margin-top: var(--sp-12);
  margin-bottom: var(--sp-4);
  padding-bottom: var(--sp-3);
  border-bottom: 2px solid var(--clr-border);
}
.prose h2:first-child { margin-top: 0; }

.prose h3 {
  font-family: var(--ff-heading);
  font-size: clamp(var(--fs-lg), 1.8vw, var(--fs-xl));
  font-weight: 600;
  color: var(--clr-navy-mid);
  line-height: var(--lh-snug);
  margin-top: var(--sp-8);
  margin-bottom: var(--sp-3);
}

.prose h4 {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .10em;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  margin-top: var(--sp-6);
  margin-bottom: var(--sp-2);
}

/* Paragraphs */
.prose p { margin-bottom: var(--sp-4); }
.prose p:last-child { margin-bottom: 0; }

/* Links */
.prose a {
  color: var(--clr-navy-mid);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: hsla(219, 70%, 28%, .35);
  transition:
    color var(--dur-fast) var(--ease),
    text-decoration-color var(--dur-fast) var(--ease);
}
.prose a:hover { color: var(--clr-red); text-decoration-color: var(--clr-red); }

/* Lists */
.prose ul, .prose ol { padding-left: var(--sp-5); margin-bottom: var(--sp-4); }
.prose ul { list-style: none; }
.prose ul li { position: relative; padding-left: var(--sp-4); margin-bottom: var(--sp-2); }
.prose ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: .58em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--clr-navy);
  opacity: .45;
}
.prose ol { list-style: decimal; }
.prose ol li { margin-bottom: var(--sp-2); }

/* Inline */
.prose strong { font-weight: 700; }
.prose em { font-style: italic; }

/* Tables */
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--sp-6);
  font-size: var(--fs-sm);
  box-shadow: var(--sh-sm);
  border-radius: var(--r-md);
  overflow: hidden;
}
.prose thead { background: var(--clr-navy); }
.prose thead th {
  padding: var(--sp-3) var(--sp-4);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #fff;
  text-align: left;
}
.prose tbody tr {
  border-bottom: 1px solid var(--clr-border);
  transition: background var(--dur-fast) var(--ease);
}
.prose tbody tr:last-child { border-bottom: none; }
.prose tbody tr:nth-child(even) { background: var(--clr-surface); }
.prose tbody tr:hover { background: var(--clr-navy-tint); }
.prose tbody td { padding: var(--sp-3) var(--sp-4); vertical-align: top; }

/* Blockquotes */
.prose blockquote {
  border-left: 4px solid var(--clr-navy);
  padding: var(--sp-4) var(--sp-6);
  margin: var(--sp-6) 0;
  background: var(--clr-navy-tint);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  font-style: italic;
  color: var(--clr-navy-mid);
}

/* Code */
.prose code {
  font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
  font-size: .875em;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  padding: .1em .35em;
  border-radius: var(--r-sm);
  color: var(--clr-navy-mid);
}
.prose pre {
  background: hsl(220, 22%, 12%);
  padding: var(--sp-6);
  border-radius: var(--r-md);
  overflow-x: auto;
  margin-bottom: var(--sp-6);
}
.prose pre code {
  background: none;
  border: none;
  padding: 0;
  color: hsl(220, 20%, 88%);
  font-size: var(--fs-sm);
}

/* Horizontal rules */
.prose hr { border: none; border-top: 1px solid var(--clr-border); margin-block: var(--sp-8); }

/* ════════════════════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════════════════════ */
.site-footer {
  background: hsl(220, 28%, 10%);
  color: hsla(0,0%,100%,.65);
  padding-top: var(--sp-12);
  padding-bottom: var(--sp-8);
  flex-shrink: 0;
}

.site-footer > .content-wrap { max-width: none; padding-inline: var(--gutter); }

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.4fr;
  gap: var(--sp-10);
  padding-bottom: var(--sp-10);
  border-bottom: 1px solid hsla(0,0%,100%,.08);
  max-width: calc(var(--content-max-w) + 2 * var(--gutter));
}

.footer-heading {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--clr-gold);
  margin-bottom: var(--sp-4);
}

.footer-brand-name {
  font-family: var(--ff-heading);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--sp-3);
}
.footer-brand-desc {
  font-size: var(--fs-sm);
  line-height: 1.6;
  margin-bottom: var(--sp-3);
  color: hsla(0,0%,100%,.60);
}
.footer-host { font-size: var(--fs-xs); line-height: 1.6; color: hsla(0,0%,100%,.42); margin-bottom: var(--sp-2); }
.footer-sponsors { font-size: var(--fs-xs); color: hsla(0,0%,100%,.30); }

.footer-nav-list { display: flex; flex-direction: column; gap: var(--sp-2); }
.footer-nav-list a {
  font-size: var(--fs-sm);
  color: hsla(0,0%,100%,.55);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}
.footer-nav-list a:hover { color: #fff; }

.footer-contact-role {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: hsla(0,0%,100%,.35);
  margin-top: var(--sp-4);
}
.footer-contact-role:first-child { margin-top: 0; }
.footer-contact-name {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: hsla(0,0%,100%,.75);
  margin-bottom: var(--sp-1);
}
.footer-col--contact a {
  font-size: var(--fs-sm);
  color: hsl(219, 80%, 72%);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}
.footer-col--contact a:hover { color: #fff; }

.footer-bottom {
  padding-top: var(--sp-6);
  text-align: left;
}
.footer-bottom p { font-size: var(--fs-xs); color: hsla(0,0%,100%,.25); }

/* ════════════════════════════════════════════════════════════════
   RESPONSIVE — collapse sidebar to mobile overlay
   ════════════════════════════════════════════════════════════════ */
@media (max-width: 860px) {

  /* Sidebar becomes a slide-in overlay */
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--dur-base) var(--ease);
    box-shadow: none;
  }
  .sidebar--open {
    transform: translateX(0);
    box-shadow: 4px 0 32px hsla(220, 60%, 8%, .45);
  }

  /* Remove sidebar offset from content */
  .page-wrap { margin-left: 0; }

  /* Show mobile header and overlay */
  .mobile-header { display: flex; }
  .sidebar-overlay { display: block; }

  /* Hero body padding accounts for no sidebar */
  .hero__body { padding-top: var(--sp-12); padding-bottom: var(--sp-12); }

  /* Footer grid */
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-8);
  }
  .footer-col--brand { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero__title { font-size: var(--fs-3xl); }
  .hero__actions { flex-direction: column; align-items: flex-start; }
  .btn { width: 100%; justify-content: center; }
}

/* ════════════════════════════════════════════════════════════════
   PRINT
   ════════════════════════════════════════════════════════════════ */
@media print {
  .sidebar, .mobile-header, .site-footer, .hero { display: none; }
  .page-wrap { margin-left: 0; }
  .site-main { padding: 0; }
  .prose a::after { content: ' (' attr(href) ')'; font-size: .8em; color: var(--clr-text-muted); }
}