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



/* BASE */
body {
  font-family: Arial, Helvetica, sans-serif;
  background-color: #f7f7f7;
  color: #333;
}

/* CONTAINER */
.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
}

/* HEADER */
header {
  background: #ffffff;
  border-bottom: 2px solid #e0e0e0;
  padding: 12px 0;
}

.header-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 26px;
  font-weight: bold;
  color: #000;
  text-decoration: none;
}

nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #444;
  font-weight: 500;
}

nav a:hover {
  color: #06376b;
  text-decoration: underline;
}

/* HERO */
.hero {
  background: #06376b;
  color: #fff;
  padding: 60px 0;
  text-align: center;
}

.hero h1 {
  font-size: 42px;
  margin-bottom: 10px;
}

.hero p {
  font-size: 18px;
  margin-bottom: 25px;
}


/* */
.navbar {
    overflow-x: hidden;
    min-height: 64px;
}

.navbar-nav {
    white-space: nowrap;
}

.nav-link {
    padding: 0.4rem 0.6rem;
    font-size: 0.95rem;
}

.navbar-collapse {
    max-height: calc(100vh - 70px);
    overflow-y: auto;
}


/* FEATURES */
.features {
  display: flex;
  gap: 20px;
  margin: 50px auto;
}

/*  Resources */

.search-result-card {
  border: none !important;
  background: #f8f8f8 !important;
  box-shadow: 0 12px 20px -10px rgba(0, 0, 0, 0.25);
}

.search-result-card a {
  text-decoration: none;
  color: rgb(19, 41, 74);
}


.search-result-card h5 :hover {
  text-decoration: underline;
}


/* CENTER CONTAINER */
.center-container {
  width: 100%;
  max-width: 1200px;
  margin: 40px auto;
  display: flex;
  gap: 20px;
  font-size: 18px;
  line-height: 35px;
  align-items: flex-start;
}

/* LEFT & RIGHT PANELS */
.left-column {
  flex: 0 0 70%;
  background: #fff;
  padding: 20px;
  border-radius: 6px;
  font-family: sans-serif;
  color: rgb(59, 59, 59);
  text-align: justify;
  line-height: 35px;
  max-width: 70%;
}

.left-column h2 {
  color: #000;
}

.right-column {
  flex: 0 0 30%;
  background: #fff;
  padding: 20px;
  border-radius: 6px;
  color: rgb(59, 59, 59);
  text-align: justify;
  font-family: sans-serif;
  line-height: 35px;
  max-width: 30%;
}

.left-column h2 {
  color: #000;
}

/*--------------------------------

/* Section */
section {
  margin-top: 10px;
  scroll-margin-top: 100px;
  
}

/* index */

.whats_new_index a {
text-decoration: none;
color: #022b6a;
}

.whats_new_index li {

  text-align: left;
  
}

/* About PI*/

.nav-buttons {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: white;
  border: none;
}

.navbtn {
  background-color: rgba(0, 50, 116, 0.822) !important;
  border: none !important;
}

.pi_info {
  width: 70%;
  align-items: center;
  align-content: justify;
  text-align: justify;
  text-justify: inter-word;
  margin-top: 50px;
  font-family: sans-serif;
  color: rgb(59, 59, 59);
  line-height: 30px;
}

.pi_info h2 {
  margin-top: 5px;
  margin-bottom: 10px;
  color: #001f3f;
}

.collaborators {
  font-family: sans-serif;
  color: rgb(59, 59, 59);
  line-height: 30px;
}

.collaborators h4 {
  margin-top: 5px;
  margin-bottom: 10px;
  color: #001f3f;
}

.awards {
  font-family: sans-serif;
  color: rgb(59, 59, 59);
  line-height: 30px;
}

.awards h4 {
  margin-top: 5px;
  margin-bottom: 10px;
  color: #001f3f;
}

.awards table {
  border: 5px #000;
}

.honors {
  font-family: sans-serif;
  color: rgb(59, 59, 59);
  line-height: 30px;
}

.honors h4 {
  margin-top: 5px;
  margin-bottom: 10px;
  color: #001f3f;
}

.memberships {
  font-family: sans-serif;
  color: rgb(59, 59, 59);
  line-height: 30px;
}

.memberships h4 {
  margin-top: 5px;
  margin-bottom: 10px;
  color: #001f3f;
}



/*--------------------------------

/*  */
.accordion-body ul {
  margin-top: 25px;
  margin-bottom: 25px;
  font-family: sans-serif;
}

.publications ul a {
  text-decoration: none;
  color: #003e74;
}


/* Projects*/
.btn-large {
  margin: 5px;
  font-size: 1.2rem;
  padding: 10px 25px;
}

.btn-selected {
  background-color: #031930 !important;
  color: #fff !important;
  border-bottom: 3px solid #032c52;
  transition: 0.3s;
}

.table-striped {
  font-family: Helvetica;
  border: solid 1px;
}

.table-striped td {
  border: solid 0.5px black;
  text-align: center;
}

.table-striped td a {
  color: rgb(0, 57, 131)
}

.table-striped th {
  border: solid 1px black;
  text-align: center;
}

/*------


/* publications */
.publications {
  font-family: sans-serif;
  color: rgb(59, 59, 59);
  line-height: 30px;
}

.publications h4 {
  margin-top: 5px;
  margin-bottom: 10px;
  color: #001f3f;
}

.publications ul {
  list-style: none;
}

.publications li {
  margin-bottom: 30px;
}

/*------

/* Research*/
.research-card {
  background: #ffffff;
  border-radius: 12px;
  padding: 12px;
  font-family: sans-serif;
  line-height: 30px;
  text-align: justify;
}

.research-img {
  width: 100%;
  max-height: 300px;
  object-fit: cover;
  border-radius: 12px;
}

.rsch_content_head{
  color: #ffffff; 
  background-color: #06376b; 
  height:50px; 
  text-align: center; 
  padding-top: 10px; 
  border-radius: 6px;
}


/*   Members */

.table-container {
  margin-top: 20px;
}

.member-row {
  display: flex;
  align-items: stretch;
  width: 100%;
}


.desc-cell {
  padding: 1.5rem;
  justify-content: center;
  align-items: center;
  flex: 1;
  text-align: left;
  font-family: sans-serif;
}

.photo-cell {
  max-width: 300px;
}

.member-photo {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 50%;
}

.desc-cell h5 {
  margin-bottom: 0.5rem;
  color: #012f5d;
}

.desc-cell p a {
  padding: 2px;
  font-family: arial;
  text-decoration: None;
  color: black;
}

.desc-cell p  {
 font-size: 15px;
}

/*------Contact page --- */


.developer {
  width: 70%;
  align-items: center;
  align-content: center;
  text-align: center;
  text-justify: inter-word;
  margin-bottom: auto;
  margin-right: auto;
  margin-left: auto;
  margin-top: 60px;
}

.developer p {
  line-height: 7px;
  font-family: Helvetica;
  font-size: 18px;
  text-align: center;
  padding-top: 10px;
}

.developer h4 {
  color: #001f3f;
  line-height: 35px;
  font-family: sans-serif;
  padding-top: 5px;
  margin-top: 5px;
}

.developer img {
  width: 70%;
  height: 70%;
}

.contactpi {
  width: 70%;
  align-items: center;
  align-content: center;
  text-align: center;
  text-justify: inter-word;
  margin-bottom: auto;
  margin-right: auto;
  margin-left: auto;
  margin-top: 60px;

}

.contactpi p {
  line-height: 10px;
  font-family: sans-serif;
  font-size: 18px;
  text-align: center;
  padding-top: 10px;
  margin-top: 5px;
}

.contactpi h4 {
  line-height: 35px;
  font-family: sans-serif;
  padding-top: 5px;
  margin-top: 5px;
  color: #001f3f;
}

.contactpi img {
  width: 70%;
  height: 70%;
}

/*--------


/* Resources */


.carb_body_h5 {
  color: rgb(4, 30, 90);
}


/* FOOTER */
footer {
  position: fixed;
  bottom: 0;
  width: 100%;
  height: 60px;
  background: #06376b;
  color: #ccc;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

footer a {
  color: #ccc;
  margin: 0 10px;
  text-decoration: none;
}

footer a:hover {
  color: #fff;
}

/* Container for icons */
.icon-container {
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  margin: 40px auto;
  max-width: 1000px;
  gap: 30px;
}

/* Individual icon box */
.icon-box {
  text-align: center;
  width: 150px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.icon-box:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Icon image */
.icon-box img {
  width: 60px;
  height: 60px;
  margin-bottom: 10px;
}

/* Icon label */
.icon-box p {
  font-weight: 500;
  color: #1f5fa5;
  margin: 0;
}


/*  */
.folder-card {
  border: none;
  border-radius: 12px;
  box-shadow: 0 12px 20px -10px rgba(0, 0, 0, 0.25);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.folder-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 30px -12px rgba(0, 0, 0, 0.35);
}



/* Gallery */
.gallery-section {
  max-width: 1200px;
  margin: 50px auto;
  padding: 0 15px;
}

.section-title {
  font-size: 26px;
  font-weight: 600;
  margin-bottom: 20px;
  border-left: 5px solid #054bb4;
  padding-left: 15px;
  color: #333;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.gallery-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gallery-item:hover img {
  transform: scale(1.1);
}

.overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: 0.3s;
}

.gallery-item:hover .overlay {
  opacity: 1;
}

.overlay i {
  color: white;
  font-size: 26px;
}

.modal-img {
  width: 100%;
  border-radius: 12px;
}

/*Publication */
.chart-box {
    width: 600;
    margin: auto;
}
#chart {
    width: 100%;
    max-width: 900px;
    height: auto;
    display: block;
    margin: 0 auto;
}

/* Tooltip */
.tooltip {
    position: absolute;
    background: #333;
    color: #fff;
    padding: 4px 8px;
    font-size: 12px;
    border-radius: 4px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s;
}