@import url('https://fonts.googleapis.com/css2?family=Noticia+Text:ital,wght@0,400;0,700;1,400;1,700&family=Open+Sans:wght@400;600;700;800&display=swap');
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.7.2/css/all.min.css');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Open Sans', sans-serif;
  background-color: #f2f0f0;
  color: #333;
  line-height: 1.6;
}

a {
  color: #333;
  text-decoration: underline;
}

a:hover {
  color: #7a6ba0;
}

/* ─── Site Header ─── */

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 2.5rem 3rem 0;
}

.site-title {
  font-family: 'Noticia Text', serif;
  font-size: 2.8rem;
  font-weight: 700;
  color: #1a1a1a;
  line-height: 1.15;
  margin-bottom: 0.35rem;
}

.site-subtitle {
  font-size: 1rem;
  color: #666;
  font-weight: 400;
}

.brain-logo {
  width: 185px;
  height: auto;
  margin-top: 0.3rem;
  flex-shrink: 0;
}

/* ─── Navigation ─── */

.site-nav {
  padding: 1.8rem 3rem 0;
}

.site-nav ul {
  list-style: none;
  display: flex;
  gap: 2.2rem;
  padding-bottom: 0;
}

.site-nav ul li a {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: #aaa;
}

.site-nav ul li a.active {
  color: #7a6ba0;
}

.site-nav ul li a:hover {
  color: #7a6ba0;
  text-decoration: none;
}

/* ─── Main Content ─── */

main {
  padding: 2.5rem 3rem 3rem;
}

main p {
  margin-bottom: 1rem;
  font-size: 1rem;
  line-height: 1.75;
}

/* ─── Home: Three Circles ─── */

.circles-row {
  display: flex;
  align-items: center;
  margin: 3.5rem 0 3rem;
}

.circle-link {
  width: 105px;
  height: 105px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.63rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-decoration: none;
  flex-shrink: 0;
  border: 3px solid rgba(140, 140, 140, 0.35);
}

.circle-link:hover {
  opacity: 0.88;
  text-decoration: none;
  color: white;
}

.circle-link.circle-tan:hover {
  color: #333;
}

.circle-connector {
  height: 2px;
  width: 55px;
  background: #bbb;
}

.circle-navy   { background-color: #384880; }
.circle-purple { background-color: #9870b0; }
.circle-red    { background-color: #c05850; }
.circle-tan    { background-color: #f8e0a0; color: #333; }

/* ─── Footer ─── */

footer {
  text-align: center;
  padding: 0 3rem 3rem;
}

.footer-rule {
  border: none;
  border-top: 1px solid #ccc;
  margin-bottom: 2rem;
}

.penn-shield {
  width: 78px;
  height: auto;
  display: block;
  margin: 0 auto 0.9rem;
}

footer a {
  display: block;
  color: #333;
  text-decoration: underline;
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ─── Publications ─── */

.pub-section-title {
  font-family: 'Noticia Text', serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: #333;
  margin: 2rem 0 0.8rem;
}

.pub-list {
  list-style: none;
  padding: 0;
}

.pub-list li {
  margin-bottom: 0.9rem;
  font-size: 0.97rem;
  line-height: 1.65;
}

.pub-note {
  display: block;
  margin-left: 1.5rem;
  font-size: 0.93rem;
  color: #444;
  margin-top: 0.1rem;
}

/* ─── Content headings (Join Us / Resources) ─── */

.content-h2 {
  font-family: 'Noticia Text', serif;
  font-size: 1rem;
  font-weight: 700;
  margin: 1.6rem 0 0.5rem;
}

.content-h3 {
  font-family: 'Noticia Text', serif;
  font-size: 1rem;
  font-weight: 700;
  margin: 1.2rem 0 0.3rem;
}

/* ─── Resources ─── */

.stimulus-images {
  display: flex;
  gap: 0.6rem;
  margin-top: 1.5rem;
}

.stimulus-img {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
}

/* ─── Contact Form ─── */

.contact-form {
  margin-top: 1.5rem;
  max-width: 480px;
}

.form-row-two {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 1.2rem;
}

.form-group {
  flex: 1;
}

.form-group label,
.form-group-full label {
  display: block;
  font-size: 0.92rem;
  color: #555;
  margin-bottom: 0.25rem;
}

.form-group input,
.form-group-full input,
.form-group-full textarea {
  width: 100%;
  border: none;
  border-bottom: 1px solid #999;
  background: transparent;
  padding: 0.2rem 0;
  font-family: 'Open Sans', sans-serif;
  font-size: 0.95rem;
  color: #333;
  outline: none;
}

.form-group-full {
  margin-bottom: 1.2rem;
}

.form-group-full textarea {
  height: 80px;
  resize: none;
  display: block;
}

.form-send-row {
  border-top: 1px solid #999;
  margin-top: 0.5rem;
  padding-top: 0.4rem;
  text-align: center;
}

.btn-send {
  background: transparent;
  border: none;
  font-family: 'Open Sans', sans-serif;
  font-size: 0.95rem;
  color: #333;
  cursor: pointer;
  padding: 0.3rem 1rem;
}

.btn-send:hover {
  color: #7a6ba0;
}

/* ─── People page ─── */

.people-section {
  padding: 2.5rem 0 2rem;
}

.people-section + .people-section {
  border-top: 1px solid #ccc;
}

.section-row {
  display: flex;
  align-items: flex-start;
  gap: 2.5rem;
}

/* Circle badge labels */
.section-badge {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 0.82rem;
  line-height: 1.35;
  flex-shrink: 0;
  margin-top: 0.5rem;
}

.badge-pi       { background: #384880; color: white; }
.badge-grad     { background: #f8e0a0; color: #333; }
.badge-research { background: #c05850; color: white; }
.badge-alumni   { background: #9870b0; color: white; }

/* PI layout: photo left, info right */
.pi-layout {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}

.people-photo-lg {
  width: 248px;
  height: auto;
  object-fit: cover;
  display: block;
}

.pi-info {
  padding-top: 0.3rem;
}

.pi-name {
  font-family: 'Noticia Text', serif;
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.pi-info a {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
  text-decoration: underline;
}

.pi-links-inline {
  display: inline;
  font-size: 0.95rem;
}

.pi-links-inline a {
  display: inline;
  margin-bottom: 0;
}

/* People grid (grad students, alumni) */
.people-grid {
  display: flex;
  gap: 1.8rem;
  flex-wrap: wrap;
}

.person-item {
  display: flex;
  flex-direction: column;
  width: 192px;
}

.people-photo {
  width: 192px;
  height: 206px;
  object-fit: cover;
  object-position: top;
  display: block;
  margin-bottom: 0.45rem;
}

/* Silhouette placeholder for no-photo */
.no-photo {
  width: 192px;
  height: 206px;
  background: #c8c8c8;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.45rem;
  overflow: hidden;
}

.silhouette-head {
  width: 72px;
  height: 72px;
  background: #aaa;
  border-radius: 50%;
}

.silhouette-body {
  width: 130px;
  height: 95px;
  background: #aaa;
  border-radius: 65px 65px 0 0;
  margin-top: 6px;
}

/* Name row (name + social icons inline) */
.person-name-row {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin-bottom: 0.15rem;
}

.person-name {
  font-family: 'Noticia Text', serif;
  font-weight: 700;
  font-size: 0.97rem;
}

.person-email {
  font-size: 0.8rem;
  word-break: break-all;
  text-decoration: underline;
  color: #333;
}

.person-role {
  font-size: 0.88rem;
  color: #555;
  line-height: 1.35;
}

/* Social icons */
.sicon {
  font-size: 1.2rem;
  text-decoration: none;
  color: #1a1a1a;
  line-height: 1;
}

.sicon:hover {
  opacity: 0.7;
  text-decoration: none;
}

.sicon.bluesky  { color: #0085ff; }
.sicon.mastodon { color: #563acc; }