/*
  Theme overrides layered on top of styles.css (Start Bootstrap "Business Casual").
  Palette: ink-navy structure, gold accent, cool paper ground.
  Type: Zilla Slab (headings), Lora (body, inherited from styles.css), IBM Plex Mono (labels/metadata).
*/

:root {
  --paper: #F3F3EF;
  --paper-raised: #FFFFFF;
  --ink: #171B22;
  --ink-soft: #5B6472;
  --navy: #1B2740;
  --navy-soft: #2B3A5C;
  --gold: #B9812C;
  --gold-bright: #C99435;
  --line: rgba(23, 27, 34, 0.12);
  --serif-display: "Zilla Slab", Georgia, "Iowan Old Style", serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

body {
  background-image: none;
  background-color: var(--paper);
  color: var(--ink);
}

a {
  color: var(--gold);
}
a:hover {
  color: var(--gold-bright);
}

h1, h2, h3, h4, h5, h6,
.site-heading, .section-heading {
  font-family: var(--serif-display);
  font-weight: 600;
}

/* Nav */
#mainNav {
  background-color: var(--navy);
  border-bottom: 2px solid var(--gold);
  font-family: var(--mono);
}
#mainNav .navbar-brand {
  color: #F4F1E8;
  font-family: var(--serif-display);
  font-weight: 600;
}
#mainNav .navbar-nav .nav-item .nav-link {
  color: #C7CEDB;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  border-bottom: 2px solid transparent;
}
#mainNav .navbar-nav .nav-item.active .nav-link {
  color: #fff;
  border-bottom-color: var(--gold);
}
@media (min-width: 992px) {
  #mainNav .navbar-nav .nav-item .nav-link:hover {
    color: #fff;
    border-bottom-color: var(--gold);
  }
  #mainNav .navbar-nav .nav-item.active .nav-link:hover {
    color: #fff;
  }
}

/* Site heading (home masthead, unused once hero ships, kept for safety) */
.text-faded { color: #E7DEC7; }

/* Section headings: drop the old boxed/uppercase treatment for clean editorial headers */
.section-heading {
  text-transform: none;
}
.section-heading .section-heading-upper {
  font-size: 1.5rem;
  font-weight: 600;
  display: block;
}

/* Old "floating card" backgrounds neutralized -- content now sits directly on the page */
.bg-faded {
  background-color: transparent;
}

/* Eyebrow label -- small mono kicker above a heading */
.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--gold);
}

/* Section divider rhythm */
.page-section {
  border-top: 1px solid var(--line);
  padding-top: 3.5rem;
}
.page-section:first-of-type,
section.page-section.hero-section {
  border-top: none;
}

/* Buttons */
.btn-primary {
  --bs-btn-color: #fff;
  --bs-btn-bg: var(--navy);
  --bs-btn-border-color: var(--navy);
  --bs-btn-hover-color: #fff;
  --bs-btn-hover-bg: var(--navy-soft);
  --bs-btn-hover-border-color: var(--navy-soft);
  --bs-btn-active-color: #fff;
  --bs-btn-active-bg: var(--navy-soft);
  --bs-btn-active-border-color: var(--navy-soft);
  --bs-btn-disabled-color: #fff;
  --bs-btn-disabled-bg: var(--navy);
  --bs-btn-disabled-border-color: var(--navy);
  font-family: var(--mono);
  letter-spacing: 0.04em;
}
.btn-outline-secondary {
  --bs-btn-color: var(--ink);
  --bs-btn-border-color: var(--ink);
  --bs-btn-hover-bg: transparent;
  --bs-btn-hover-color: var(--gold);
  --bs-btn-hover-border-color: var(--gold);
  font-family: var(--mono);
  letter-spacing: 0.04em;
}
.btn-xl {
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 2px;
}

/* Footer */
.footer {
  background-color: var(--navy);
  font-family: var(--mono);
  font-size: 0.82rem;
}
.footer a {
  color: #EADFC2;
}
.footer a:hover {
  color: var(--gold-bright);
}

/* ---------- Homepage hero ---------- */
.hero-section {
  padding-top: 3.5rem;
}
.hero {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 3rem;
  align-items: center;
}
.hero-photo-wrap {
  position: relative;
}
.hero-photo-wrap::before {
  content: "";
  position: absolute;
  inset: -14px -14px auto auto;
  width: 65%;
  height: 65%;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 14px 14px;
  z-index: 0;
}
.hero-photo {
  position: relative;
  z-index: 1;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 18px 40px -18px rgba(23, 27, 34, 0.35);
  margin: 0;
}
.hero h1.name {
  font-family: var(--serif-display);
  font-weight: 600;
  font-size: clamp(2.1rem, 4vw, 3.1rem);
  line-height: 1.06;
  margin: 0 0 1rem;
  text-wrap: balance;
  color: var(--ink);
  text-align: left;
  text-transform: none;
}
.hero .tagline {
  font-size: 1.08rem;
  color: var(--ink-soft);
  max-width: 52ch;
  margin: 0 0 1.6rem;
  text-align: left;
}
.hero .cta-row {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  justify-content: flex-start;
}
@media (max-width: 991px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .hero-photo-wrap {
    max-width: 280px;
    margin: 0 auto;
  }
}

/* Bio paragraph */
.bio-text {
  max-width: 64ch;
  font-size: 1.1rem;
  line-height: 1.7;
  text-align: left;
}

/* ---------- Publications / course lists ---------- */
.entry-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
}
.entry-list > li {
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}
.entry-list > li:first-child {
  border-top: none;
  padding-top: 0;
}
.entry-list h3, .entry-list h5 {
  font-family: var(--serif-display);
  font-weight: 600;
  font-size: 1.12rem;
  line-height: 1.4;
  margin: 0 0 0.5rem;
}
.entry-list h3 i, .entry-list h5 i {
  color: var(--ink-soft);
}
.entry-list > li > p:first-of-type {
  margin-bottom: 0.75rem;
}
.entry-list > li > p > a {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--navy);
  border-bottom: 1px solid var(--gold);
  padding-bottom: 1px;
  margin-right: 1rem;
  display: inline-block;
}
.abstract-toggle:hover,
.paper-button:hover {
  color: var(--gold);
}
.abstract p {
  color: var(--ink-soft);
}

/* CV / Scholar link line under a section heading */
.meta-links {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  margin-bottom: 2rem;
}

/* ---------- Current Research ---------- */
.research-block {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 2.5rem;
  align-items: center;
}
.research-block:nth-of-type(even) .research-media {
  order: 2;
}
.research-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 18px 40px -18px rgba(23, 27, 34, 0.35);
}
.research-body h2 {
  margin-bottom: 1rem;
}
.research-body p {
  color: var(--ink);
  max-width: 56ch;
}
@media (max-width: 991px) {
  .research-block, .research-block:nth-of-type(even) .research-media {
    grid-template-columns: 1fr;
    order: 0;
  }
}