/* ── Nevada Blue Academic Site — Shared Styles ── */
:root {
  --blue:      #003366;
  --blue-mid:  #00539b;
  --blue-lt:   #1a6fc4;
  --blue-pale: #e4edf8;
  --silver:    #8a9db5;
  --white:     #ffffff;
  --off-white: #f6f8fb;
  --paper:     #fafbfd;
  --text:      #1a2535;
  --text-mid:  #3d5066;
  --text-lt:   #637080;
  --border:    #ccd6e4;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--off-white);
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
}
a { color: var(--blue-mid); text-decoration: none; }
a:hover { color: var(--blue-lt); text-decoration: underline; }
img { display: block; max-width: 100%; }

/* ── NAV ── */
nav {
  background: var(--blue);
  height: 56px;
  display: flex;
  align-items: center;
  padding: 0 2rem;
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}
.nav-inner {
  max-width: 1160px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  font-family: 'Libre Baskerville', serif;
  font-size: 0.95rem;
  color: #fff;
  text-decoration: none;
}
.nav-brand em { color: #7ab3e0; font-style: italic; font-weight: 400; }
.nav-links { display: flex; gap: 1.6rem; list-style: none; }
.nav-links a {
  color: #a8c4e0;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  transition: color 0.15s;
}
.nav-links a:hover,
.nav-links a.active { color: #fff; text-decoration: none; }

/* ── HERO ── */
.hero {
  background: linear-gradient(150deg, var(--blue) 0%, #004d8c 100%);
  padding: 3.5rem 2rem;
}
.hero-inner {
  max-width: 1160px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 3rem;
  align-items: start;
}
.hero-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #7ab3e0;
  margin-bottom: 0.8rem;
}
.hero h1 {
  font-family: 'Libre Baskerville', serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
  color: #fff;
  line-height: 1.15;
  margin-bottom: 0.35rem;
  font-weight: 700;
}
.hero-subtitle {
  font-family: 'Libre Baskerville', serif;
  font-style: italic;
  color: #a8c8e8;
  font-size: 1rem;
  margin-bottom: 1.4rem;
}
.hero-bio {
  color: #cfe2f3;
  font-size: 0.93rem;
  line-height: 1.8;
  max-width: 560px;
  font-weight: 300;
}
.hero-bio strong { color: #e8f4ff; font-weight: 500; }

/* ── PAGE HERO (subpages) ── */
.page-hero {
  background: linear-gradient(150deg, var(--blue) 0%, #004d8c 100%);
  padding: 2.5rem 2rem;
}
.page-hero-inner {
  max-width: 1160px;
  margin: 0 auto;
}
.page-hero .hero-eyebrow { margin-bottom: 0.5rem; }
.page-hero h1 {
  font-family: 'Libre Baskerville', serif;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  color: #fff;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.4rem;
}
.page-hero p {
  color: #a8c8e8;
  font-size: 0.93rem;
  font-style: italic;
  font-family: 'Libre Baskerville', serif;
}

/* ── CONTACT CARD ── */
.contact-card {
  background: #fff;
  padding: 1.6rem 1.8rem;
  border: 1px solid var(--border);
}
.contact-card h3 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 0.55rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}
.contact-card p { font-size: 0.84rem; color: var(--text-mid); line-height: 1.55; margin-bottom: 0.3rem; }
.contact-card a { color: var(--blue-mid); }
.card-sep { border: none; border-top: 1px solid var(--border); margin: 0.85rem 0; }

/* ── LAYOUT ── */
.wrap { max-width: 1160px; margin: 0 auto; padding: 3rem 2rem; }
.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.63rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blue-mid);
  margin-bottom: 0.35rem;
}
.sec-title {
  font-family: 'Libre Baskerville', serif;
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  color: var(--blue);
  margin-bottom: 2rem;
  font-weight: 700;
  line-height: 1.2;
}
.sec-title small {
  display: block;
  font-weight: 400;
  font-style: italic;
  font-size: 0.7em;
  color: var(--text-lt);
  margin-top: 0.15rem;
}

/* ── GRID SYSTEM (hairline-separated cards) ── */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.cell { background: #fff; }

/* ── RESEARCH PROJECT CARDS ── */
.proj { background: #fff; display: flex; flex-direction: column; }
.proj.wide { grid-column: span 2; flex-direction: row; }
.proj-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; background: var(--blue-pale); flex-shrink: 0; }
.proj.wide .proj-img { width: 46%; aspect-ratio: auto; height: 100%; }
.proj-body { padding: 1.25rem 1.4rem 1.4rem; flex: 1; display: flex; flex-direction: column; }
.proj-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.58rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--blue-lt);
  margin-bottom: 0.35rem;
}
.proj h3 {
  font-family: 'Libre Baskerville', serif;
  font-size: 0.98rem;
  color: var(--blue);
  margin-bottom: 0.5rem;
  line-height: 1.3;
  font-weight: 700;
}
.proj p { font-size: 0.84rem; color: var(--text-mid); line-height: 1.65; flex: 1; }
.proj-link {
  display: inline-block;
  margin-top: 0.8rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue-mid);
}
.proj-link:hover { color: var(--blue-lt); text-decoration: none; }

/* ── PAPERS ── */
.papers-dark { background: var(--blue); }
.papers-dark .eyebrow { color: #7ab3e0; }
.papers-dark .sec-title { color: #fff; }
.papers-dark .sec-title small { color: #7ab3e0; }
.papers-table { border-top: 1px solid rgba(255,255,255,0.12); }
.paper {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 1.2rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  align-items: start;
}
.paper-yr {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.74rem;
  color: #7ab3e0;
  padding-top: 0.15rem;
  text-align: right;
}
.paper-title { font-size: 0.94rem; color: #e8f4ff; margin-bottom: 0.2rem; line-height: 1.4; }
.paper-venue { font-size: 0.78rem; color: #8ab4d4; font-style: italic; }
.paper-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #7ab3e0;
  padding: 0.28rem 0.65rem;
  border: 1px solid rgba(122,179,224,0.35);
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}
.paper-btn:hover { background: rgba(122,179,224,0.15); color: #fff; text-decoration: none; }
.pubs-links { margin-top: 1.6rem; display: flex; gap: 2rem; }
.pubs-links a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #7ab3e0;
}
.pubs-links a:hover { color: #fff; text-decoration: none; }

/* Light variant papers (for pubs page) */
.papers-light { background: var(--off-white); }
.papers-light .eyebrow { color: var(--blue-mid); }
.papers-light .sec-title { color: var(--blue); }
.papers-light .papers-table { border-top: 1px solid var(--border); }
.papers-light .paper { border-bottom: 1px solid var(--border); }
.papers-light .paper-yr { color: var(--blue-mid); }
.papers-light .paper-title { color: var(--text); }
.papers-light .paper-venue { color: var(--text-lt); }
.papers-light .paper-btn {
  color: var(--blue-mid);
  border: 1px solid var(--border);
}
.papers-light .paper-btn:hover { background: var(--blue-pale); color: var(--blue); }

/* ── VIDEO CARDS ── */
.vid-card { background: #fff; }
.vid-thumb {
  position: relative;
  aspect-ratio: 16/9;
  background: var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.vid-label {
  position: absolute;
  font-family: 'Libre Baskerville', serif;
  font-style: italic;
  color: rgba(255,255,255,0.18);
  font-size: 1.3rem;
  text-align: center;
  padding: 1rem;
  line-height: 1.3;
}
.play {
  width: 50px; height: 50px;
  background: rgba(255,255,255,0.9);
  display: flex; align-items: center; justify-content: center;
  position: relative; z-index: 1;
  transition: background 0.15s;
}
.play::after {
  content: '';
  border-left: 17px solid var(--blue);
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  margin-left: 5px;
}
.vid-card:hover .play { background: #fff; }
.vid-body { padding: 0.9rem 1.1rem 1.1rem; border-top: 1px solid var(--border); }
.vid-body h4 {
  font-family: 'Libre Baskerville', serif;
  font-size: 0.93rem;
  color: var(--blue);
  margin-bottom: 0.25rem;
  font-weight: 700;
}
.vid-body p { font-size: 0.79rem; color: var(--text-lt); line-height: 1.5; }

/* ── TEACHING ── */
.course { background: #fff; padding: 1.6rem 1.8rem; }
.course-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue-lt);
  margin-bottom: 0.3rem;
}
.course h3 {
  font-family: 'Libre Baskerville', serif;
  font-size: 1.1rem;
  color: var(--blue);
  margin-bottom: 0.7rem;
  font-weight: 700;
}
.course p { font-size: 0.85rem; color: var(--text-mid); margin-bottom: 1rem; line-height: 1.65; }
.demo-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.57rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-lt);
  margin-bottom: 0.45rem;
}
.chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.chip {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  padding: 0.28rem 0.7rem;
  border: 1px solid var(--border);
  color: var(--blue);
  background: var(--blue-pale);
  transition: background 0.15s, color 0.15s;
  text-decoration: none;
}
.chip:hover { background: var(--blue); color: #fff; border-color: var(--blue); text-decoration: none; }

/* ── SERVICE ── */
.svc-card { background: #fff; padding: 1.6rem 1.8rem; }
.svc-badge {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  padding: 0.25rem 0.6rem;
  margin-bottom: 0.9rem;
}
.svc-card h4 {
  font-family: 'Libre Baskerville', serif;
  font-size: 0.97rem;
  color: var(--blue);
  margin-bottom: 0.45rem;
  font-weight: 700;
  line-height: 1.3;
}
.svc-card p { font-size: 0.83rem; color: var(--text-mid); line-height: 1.65; }

/* ── OTHER BOXES ── */
.other-box {
  border: 1px solid var(--border);
  background: #fff;
  padding: 1.1rem 1.6rem;
}
.other-box summary {
  cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-mid);
  user-select: none;
}
.other-box p { margin-top: 0.75rem; font-size: 0.85rem; color: var(--text-mid); line-height: 1.8; }

/* ── ECSL LOGO BAND ── */
.ecsl-band {
  background: var(--blue);
  padding: 0 2rem;
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 2.5rem;
  min-height: 140px;
}
.ecsl-band img {
  height: 140px;
  width: auto;
  display: block;
  flex-shrink: 0;
  object-fit: contain;
}
.ecsl-band-text { color: #a8c8e8; font-size: 0.84rem; line-height: 1.6; }
.ecsl-band-text a { color: #7ab3e0; }
.ecsl-band-text a:hover { color: #fff; }

/* ── FOOTER ── */
footer {
  background: var(--blue);
  padding: 2rem;
  text-align: center;
  border-top: 3px solid var(--blue-lt);
}
footer p {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.07em;
  color: #7ab3e0;
  line-height: 2;
}
footer a { color: #a8c8e8; }
footer a:hover { color: #fff; }

/* ── PROSE (pubs page etc) ── */
.prose { max-width: 860px; }
.prose h2 {
  font-family: 'Libre Baskerville', serif;
  font-size: 1.2rem;
  color: var(--blue);
  margin: 2rem 0 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
  font-weight: 700;
}
.prose ol { padding-left: 1.4rem; }
.prose li {
  font-size: 0.88rem;
  color: var(--text-mid);
  line-height: 1.7;
  margin-bottom: 0.7rem;
}
.prose li a { color: var(--blue-mid); }
.prose .pub-authors { color: var(--text-lt); font-style: italic; }

/* ── RESPONSIVE ── */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .contact-card { display: none; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .proj.wide { flex-direction: column; grid-column: span 2; }
  .proj.wide .proj-img { width: 100%; aspect-ratio: 16/9; height: auto; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .proj.wide { grid-column: span 1; }
  .pubs-links { flex-direction: column; gap: 0.7rem; }
  .paper { grid-template-columns: 48px 1fr; }
  .paper-btn { display: none; }
}