:root{
  --duke-blue: #001A57;
  --muted: #6b7280;
  --container-width: 1200px;
}

/* Basic reset / layout */
*{ box-sizing: border-box; }
body{
  font-family: Inter, system-ui, -apple-system, 'Segoe UI', Roboto, Arial;
  margin:0;
  color:#111827;
  background:#ffffff;
}
.container{
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}


@media (max-width: 800px) {

  /* Make About section start cleanly and not collide */
  .about-section{
    margin-top: 40px;
    padding-top: 0;
    padding-left: 16px;
    padding-right: 16px;
  }

  /* Force the About heading to occupy its own line */
  .about-section h2{
    display: block;
    width: 100%;
    margin: 0 0 10px 0;
    font-size: 22px;
  }

  /* If you have a "Research interests" line near the heading, make it stack */
  .research-interests,
  .about-interests,
  .interests,
  .about-subhead{
    display: block;
    width: 100%;
    margin: 0 0 12px 0;
    font-size: 18px;
    line-height: 1.5;
  }

  /* General paragraph sizing in About for phones */
  .about-text{
    font-size: 18px;
    line-height: 1.65;
  }
}

/* =========================
   TOP + BOTTOM DUKE BANNER
   ========================= */
.top-banner,
.bottom-banner{
  background: var(--duke-blue);
  color: white;
  position: relative;
  z-index: 100;
}
.banner-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:26px 0;
}
.brand-link{ display:flex; align-items:center; text-decoration:none; color:white; }
.brand-headshot-small{
  width:44px;
  height:44px;
  border-radius:50%;
  object-fit:cover;
  border:2px solid rgba(255,255,255,0.9);
  margin-right:12px;
}
.brand-name{ font-weight:700; }
.brand-title{ font-size:18px; opacity:0.85; }
.top-nav a{ color:white; margin-left:20px; text-decoration:none; font-weight:500; font-size:22px; }
.top-nav a:hover{ text-decoration:underline; }


/* =========================
   Chapel Hero (Stable Version)
   ========================= */

.chapel-hero{
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center right;
  padding:350px 0 0px 0;
}

.chapel-overlay{
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0.35),
    rgba(0,0,0,0.05)
  );
  padding:40px 0;
}

.hero-inner{
  max-width:1100px;
  margin:0 auto;
  padding:0 24px;
  display:flex;
  align-items:center;
  gap:60px;
}

.hero-headshot-large{
  width:320px;
  height:400px;
  object-fit:cover;
  border-radius:14px;
  border:8px solid white;
  box-shadow:0 25px 60px rgba(0,0,0,0.35);
  flex-shrink:0;
}

.hero-right{
  max-width:700px;
  color:white;
}

/* Mobile Stack */
@media (max-width:900px){
  .hero-inner{
    flex-direction:column;
    text-align:center;
  }

  .hero-headshot-large{
    width:240px;
    height:300px;
    margin-bottom:30px;
  }

  .hero-right{
    max-width:100%;
    padding:0 16px;
  }

  .hero-title{
    font-size:28px;
  }

  .hero-intro{
    font-size:18px;
  }
}

.hero-title{
  font-size:44px;
  font-weight:800;
  margin:0 0 8px 0;
}
.hero-subtitle{
  margin:0 0 14px 0;
  font-size:24px;
  opacity:0.9;
}
.hero-intro{
  margin:10px 0 18px 0;
  font-size:22px;
  line-height:1.6;
  color:rgba(255,255,255,0.95);
}
.roles{ font-size:22px; margin-top:6px; }
.hero-ctas{ margin-top:28px; display:flex; gap:16px; } /*margin between intro and buttons on home
/* Bigger hero buttons */
.btn{
  padding:18px 28px;        /* bigger vertical & horizontal padding */
  font-size:20px;           /* larger text */
  font-weight:700;
  border-radius:8px;
  display:inline-block;
  transition:all 0.2s ease;
}

/* Solid Duke button */
.btn{
  background:var(--duke-blue);
  color:white;
}

/* White with Duke outline */
.btn.outline-blue{
  background:white;
  color:var(--duke-blue);
  border:3px solid var(--duke-blue);
}

/* Hover effects */
.btn:hover{
  transform:translateY(-3px);
}

.btn.outline-blue:hover{
  background:var(--duke-blue);
  color:white;
}

/* =========================
   MAIN CONTENT OFFSET (about me on home)
   give room for the overlapping headshot
   ========================= */
.main-content{
  margin-top:150px;   /* adjust if you change headshot size/position */
}
/* =========================
   ABOUT SECTION (LEFT ALIGNED)
   ========================= */
.about-section {
  margin-top: 20px;
  padding-top: 20px;
  max-width: 1000px;   /* controls width */
  margin-left: auto;
  margin-right: auto; /* centers the whole section */
}

.about-section h2{
  font-size:24px;
  font-weight:700;
  margin-bottom:18px;
  text-align:left;
}

.about-text {
  max-width: 1000px;
  margin: 0;
  font-size: 22px;   /* 22px is slightly large for long paragraphs */
  line-height: 1.8;
  color: #1f2937;
}

.roles-list{
  list-style:none;
  padding:0;
  margin-top:18px;
  font-size:22px;
  text-align:left;
}

.roles-list li{
  margin-bottom:10px;
}

/* =========================
   NEWS
   ========================= */
/* Simple News Box */
.site-news {
  max-width: 1000px;      /* SAME as .about-section max-width */
  margin: 24px auto 0 auto;   /* center it exactly like About */
}

.news-card {
  background: #ffffff;
  border-left: 5px solid var(--duke-blue);
  padding: 14px 18px;
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(3,10,34,0.04);
  font-size: 22px;      /* controls BOTH date + body size */
  line-height: 1.5;
}

.news-date {
  font-weight: 700;
  margin-right: 8px;
}

.news-text {
  font-weight: 500;
}
/* News heading + wrapper */
.site-news-wrapper { max-width: 1000px; margin: 24px auto 0; } /* matches .about-section */
.news-header {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 10px 0;
  color: #111827;
}

/* keep existing .site-news/.news-card rules (example) */
.site-news { max-width: 1000px; margin: 0; }
.news-card {
  background:#fff;
  border-left: 5px solid var(--duke-blue);
  padding: 14px 18px;
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(3,10,34,0.04);
  font-size: 22px;
  display:block;
}
.news-date { font-weight:700; margin-right:10px; }
.news-text { font-weight:500; }
/* =========================
   FUNDERS (footer logos controlled here too)
   ========================= */
.funders-section{ margin-top:50px; text-align:center; }
.funders-grid{
  display:flex;
  justify-content:center;
  gap:40px;
  flex-wrap:wrap;
  margin-top:20px;
}
.funders-grid img{
  height:70px;
  object-fit:contain;
  transition: transform 0.18s ease, opacity 0.18s ease;
  opacity:0.96;
}
.funders-grid img:hover{ transform:translateY(-4px); }

/* Footer-specific logos (consistent with funders-grid) */
.footer-logos{
  display:flex;
  justify-content:center;
  align-items:center;
  gap:28px;
  flex-wrap:wrap;
}
.footer-logos img{
  height:90px;
  max-width:250px;
  object-fit:contain;
}
.footer-logos img[src$="NIH_icon.png"],
.footer-logos img[src$="nsf_icon.png"],
.footer-logos img[src$="solar_unsoiled.png"]{
  height:90px;
  max-width:250px;
}

/* =========================
   FOOTER
   ========================= */
.site-footer{
  background:#f8f9fb;
  padding:30px 0;
  margin-top:40px;
  border-top:1px solid #e5e7eb;
}
.footer-inner{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:16px;
}



@media (max-width:800px){

  /* stack hero: headshot above text */
  .hero-headshot-large{
    position:relative;
    bottom:auto;
    left:auto;
    margin:40px auto 0 auto;
    display:block;
  }

  .hero-right{
    position:relative;
    left:auto;
    top:auto;
    margin-top:28px;
    color:white;
    padding:0 24px;
  }

  .chapel-overlay{
    padding-bottom:40px;
  }

  .main-content{
    margin-top:0;
  }
}

@media (max-width:600px){
  .hero-title{ font-size:26px; }
  .brand-headshot-small{ display:none; }
  .funders-grid img{ height:70px; }
  .footer-logos img{ height:60px; }
}

/* ---------- Projects (bigger tiles + typography) ---------- */
/* Constrain projects section to the main container width and center it */
.projects-section {
  max-width: var(--container-width); /* same as .container (1100px) */
  margin: 36px auto 0;               /* center the whole section */
  padding: 0 24px;                   /* same horizontal padding as .container */
  box-sizing: border-box;
}

/* Ensure the grid doesn't overflow its container */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
  width: 100%;
  box-sizing: border-box;
}
.projects-section h2 { font-size:32px; margin-bottom:18px; text-align:left; font-weight:800; }


/* Card - larger + bolder */
.project-card {
  display:block;
  border-radius:12px;
  overflow:hidden;
  background:white;
  text-decoration:none;
  color:inherit;
  border:1px solid #e6e6e6;
  transition: transform .18s ease, box-shadow .18s ease;
  min-height: 360px;            /* ensures even card heights */
}
.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 18px 50px rgba(2,6,23,0.10);
}

/* image area: taller for visual impact */
.project-image {
  width:100%;
  height:280px;                /* increased from 180 */
  background-size:cover;
  background-position:center;
}

/* card body */
.project-card-body {
  padding:16px 18px;
}
.project-card-title {
  font-size:22px;              /* larger title */
  margin:0 0 8px 0;
  font-weight:700;
}
.project-card-overview {
  margin:0;
  color:#4b5563;
  font-size:20px;              /* larger overview text */
  line-height:1.5;
}

/* Project detail header (no change needed but sized up) */
.project-header{ height:380px; background-size:cover; background-position:center; position:relative;}
.project-header-overlay{ background: linear-gradient(to bottom, rgba(0,0,0,0.25), rgba(0,0,0,0.02)); height:100%; display:flex; align-items:flex-end; }
.project-header-inner{ padding:26px 24px; }
.project-title{ color:white; font-size:34px; margin:0; }

/* detail body text slightly larger for legibility */
.project-body{ margin-top:18px; line-height:1.75; color:#333; font-size:30px !important; }
.project-collabs{ margin-top:6px; line-height:1.75; color:#333; font-size:22px !important; }
/* responsive: keep single column on narrow screens */
@media (max-width:900px) {
  .projects-grid { grid-template-columns:1fr; }
  .project-image { height:260px; }
  .project-card { min-height:auto; }
  .project-header { height:260px; }
}
/* =========================
   Project summary (featured) styling
   Targets the <p> inside .project-overview which holds project.summary
   ========================= */

.project-overview {
  margin-top: 12px;
  margin-bottom: 10px;
  max-width: 800px;         /* keeps the summary from stretching too wide */
}

.project-overview h2 {
  font-size: 24px;
  margin-bottom: 10px;
}

/* Make the summary large and prominent */
.project-overview p {
  font-size: 22px;          /* pick 20-26px depending on how big you want it */
  line-height: 1.85;
  color: #111827;
  font-weight: 500;
  margin: 0 0 14px 0;
  max-width: 900px;
  /* fallback stronger override if other rules conflict */
  font-size: 22px !important;
}

/* If you want the summary even larger, increase this value (example: 26px) */
/* .project-overview p { font-size: 26px !important; } */

/* Optionally make only the first paragraph extra-large (if you have multiple paragraphs): */
.project-overview p:first-of-type {
  font-size: 22px !important;
  font-weight: 500;
}

/* Small screens: reduce so it still fits */
@media (max-width: 900px) {
  .project-overview p,
  .project-overview p:first-of-type {
    font-size: 18px !important;
    line-height: 1.7;
    max-width: 100%;
  }
}

/* CV section ============== */

.cv-section{
  margin-top:40px;
}

.cv-section h1{
  font-size:32px;
  margin-bottom:20px;
}

.cv-container{
  box-shadow:0 10px 40px rgba(0,0,0,0.08);
  border-radius:8px;
  overflow:hidden;
}
/* ===== CONTACT: PROFESSIONAL STYLES (FULL) ===== */

/* Remove hero banner if present */
.contact-hero,
.contact-hero-overlay {
  display: none !important;
}

.contact-hero-inner {
  padding: 20px;
}

.contact-hero-title {
  font-size: 0px;
  margin: 6px 0 6px 0;
  color: white;
}

.contact-hero-sub {
  margin: 6px;
  color: rgba(255,255,255,0.90);
}

/* Main container (centered wrapper that holds both the social row and the card) */
.contact-main {
  max-width: 1000px;
  margin: 60px auto;     /* center it on the page */
  padding: 0 24px;
  display: flex;
  flex-direction: column; /* stack children vertically */
  align-items: center;    /* center children horizontally */
  gap: 18px;              /* vertical spacing between social row and card */
  box-sizing: border-box;
  position: relative;
}

/* =========================
   SOCIAL ROW (centered over contact-card)
   ========================= */


.social-row-top {
  width: 100%;
  max-width: 1100px;        /* match the card width below */
  margin: 28px auto 28px;          /* center inside the wrapper */
  display: flex;
  justify-content: center; /* center buttons */
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  box-sizing: border-box;
}

/* Buttons appearance */
.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 22px;
  border-radius: 10px;
  text-decoration: none;
  color: var(--duke-blue);
  border: 2px solid rgba(0,26,87,0.12);
  background: #ffffff;
  font-weight: 700;
  font-size: 16px;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
  box-shadow: 0 6px 18px rgba(2,6,23,0.04);
}

/* icon sizing */
.social-btn .icon {
  width: 22px;
  height: 22px;
  color: var(--duke-blue);
}

.social-btn span {
  font-size: 22px;
  line-height: 1;
}

/* hover state: subtle lift upward */
.social-btn:hover {
  transform: translateY(10px);
  box-shadow: 0 12px 35px rgba(2,6,23,0.08);
  background: #f8fafc;
}



/* =========================
   CONTACT CARD (leave unchanged)
   ========================= */

.contact-card {
  max-width: 1100px;
  margin: 0 auto;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 18px 50px rgba(2,6,23,0.06);
  overflow: hidden;
  border: 1px solid #e6eef8;
  box-sizing: border-box;
}

.contact-left {
  text-align: center;
  padding: 40px 20px;
  max-width: 700px;
  font-size: 22px;
}

.contact-meta {
  margin-top: 20px;
}

.form-actions {
  display: flex;
  justify-content: center;
  margin-top: 20px;
}

/* form rows */
.contact-form .form-row {
  margin-bottom: 14px;
  display: flex;
  flex-direction: column;
}

.contact-form label {
  font-weight: 600;
  margin-bottom: 8px;
  color: #111827;
}

.contact-form input,
.contact-form textarea {
  padding: 12px 14px;
  font-size: 18px;
  border-radius: 8px;
  border: 1px solid #d1d5db;
  background: #fbfdff;
  color: #0f172a;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  box-shadow: 0 0 0 4px rgba(0,26,87,0.08);
  border-color: var(--duke-blue);
}

/* actions */
.form-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 6px;
}

.btn-primary {
  background: var(--duke-blue);
  color: white;
  border: none;
  padding: 12px 18px;
  border-radius: 8px;
  font-weight: 700;
}

.btn-outline {
  background: white;
  border: 2px solid var(--duke-blue);
  color: var(--duke-blue);
  padding: 10px 16px;
  border-radius: 8px;
  text-decoration: none;
}

.btn-outline:hover {
  background: var(--duke-blue);
  color: white;
}

/* Responsive: stack the card on small screens */
@media (max-width: 1000px) {
  .contact-main { margin: 40px 12px; }
  .social-row-top { gap: 12px; }
  .social-btn { padding: 10px 14px; font-size: 22px; }
  .contact-card-inner { padding: 22px; grid-template-columns: 1fr; }
}

  .contact-card {
    margin: 20px 18px;
  }

  .social-btn {
    padding: 10px 14px;
    font-size: 22px;
  }


/* --- Project detail two-column layout (robust) --- */
.project-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px; /* flexible left + fixed right */
  gap: 40px;
  align-items: start;
  margin-top: 24px;
  box-sizing: border-box;
}

.project-main {
  min-width: 0;                  /* critical to prevent overflow pushing sidebar down */
  overflow-wrap: break-word;
}

/* Make images, tables, iframes, pre blocks responsive inside project body */
.project-body img,
.project-body iframe,
.project-body table,
.project-body pre {
  max-width: 100%;
  height: auto;
  display: block;
  box-sizing: border-box;
}

/* Sidebar styling */
.project-sidebar {
  display: block;
  width: 100%;
  max-width: 360px;
  background: #fbfdff;
  padding: 18px;
  border-radius: 10px;
  border: 1px solid #e6eef9;
  position: sticky;
  top: 120px; /* adjust if your header height differs */
  align-self: start;
  box-sizing: border-box;
  z-index: 2;
}

/* Publications / presentations styling */
.sidebar-section h4 { margin: 0 0 14px 0; font-size: 22px; color: var(--duke-blue); }
.pub-list { list-style: none; margin:0; padding:0; }
.pub-list li { margin: 8px 0; }
.pub-link { text-decoration: none; font-weight: 600; display: inline-block; color: inherit; font-size: 18px; }
.pub-link:hover { text-decoration: underline; }
.pub-meta { font-size: 16px; color: var(--muted); margin-top: 6px; }

/* Responsive fallback */
@media (max-width: 900px) {
  .project-grid { grid-template-columns: 1fr; }
  .project-sidebar { position: static; max-width: none; margin-top: 20px; top: auto; }
}

/* Collaborators list style */
.collab-list { list-style: none; margin: 0; padding: 0; display:flex; flex-wrap:wrap; gap:8px; }
.collab-item { background:#f3f6ff; padding:10px 20px; border-radius:14px; font-size:22px; }
.collab-item a { text-decoration: none; font-weight:600; color:inherit; }
.collab-item .muted { font-weight:400; color:var(--muted); font-size:13px; margin-left:6px; }