body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f8f8f8;
  color: #222;
}

header {
  background: #222;
  padding: 10px 0;
}

header nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

header nav ul li {
  margin: 0 15px;
}

header nav ul li a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}

section {
  padding: 50px;
  width: 55%;              /* responsive width */
  max-width: 1600px;       /* prevent too wide on huge screens */
  margin: auto;
}

h2 {
  border-bottom: 2px solid #ff4500;
  padding-bottom: 10px;
  margin-bottom: 20px;
  text-align: center;
}

.about-container {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.profile-pic {
  width: 200px;         /* or any size */
  height: 200px;        /* make sure it’s square */
  object-fit: cover;    /* crop inside square */
  border-radius: 50%;   /* makes it a perfect circle */
}


.bio {
  flex: 1;
}

.social-links {
  margin-top: 15px;
  text-align: center;
}

.social-links a {
  margin: 0 10px;
  font-size: 1rem;
  text-decoration: none;
  color: #333;
  font-weight: bold;
}

.social-links a:hover {
  color: #0077b5; /* LinkedIn blue (applies to hover for all) */
}


/* === Publications section === */
.pub-item {
  display: flex;
  flex-direction: row;   /* force side-by-side */
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px dotted #ccc;
  align-items: flex-start;
}

.pub-item img {
  width: 40%;            /* take half the row */
  height: auto;          /* keep proportions */
  object-fit: contain;   /* keep full image */
  border: 1px solid #ddd;
  border-radius: 4px;
}

.pub-details {
  width: 60%;            /* take other half */
  min-width: 0;          /* prevent overflow */
}

.pub-details h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: bold;
}

.pub-details p {
  margin: 5px 0;
}

.pub-links a {
  margin-right: 10px;
  font-size: 0.9rem;
  color: #ff4500;
  text-decoration: none;
}

.pub-links a:hover {
  text-decoration: underline;
}

.pub-links {
  margin-top: 5px;
}

.pub-links a {
  margin-right: 10px;
  text-decoration: none;
  color: #0073e6;
  font-weight: bold;
}

.pub-links a:hover {
  text-decoration: underline;
}


/* === Projects section === */
.projects-row {
  display: flex;
  justify-content: space-between;
  align-items: stretch;   /* equal height rows */
  margin-bottom: 30px;
  gap: 10%;               /* gap between the two videos */
}

.project-card {
  width: 45%;
  display: flex;
  flex-direction: column;
}

.project-card video {
  width: 100%;
  border-radius: 5px;
  flex-grow: 1;           /* ensures same row height */
  object-fit: cover;
}

.project-title {
  text-align: center;
  margin-top: 10px;
  font-size: 1.05rem;
}

.project-desc {
  text-align: center;
  font-size: 0.9rem;
  color: #444;
  margin-top: 5px;
}

.project-links {
  text-align: center;   /* centers the link(s) inside */
  margin-top: 10px;     /* optional spacing */
}

.project-links a {
  font-size: 1rem;
  font-weight: bold;
  color: #ff0000;       /* YouTube red */
  text-decoration: none;
}

.project-links a:hover {
  text-decoration: underline;
}


/* === Robots Section === */
#robots {
  padding: 50px;
  max-width: 1200px;
  margin: auto;
}

#robots h2 {
  border-bottom: 2px solid #ff4500;
  padding-bottom: 10px;
  margin-bottom: 30px;
  text-align: center;
}

.robots-row {
  display: flex;
  justify-content: space-between;
  gap: 5%;
}

.robot-card {
  width: 30%;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.robot-card img {
  width: 220px;                /* adjust size */
  height: 150px;               /* rectangle dimensions */
  object-fit: cover;           /* keeps image proportional */
  border-radius: 40px;         /* rounded corners */
  border: 2px solid #ccc;      /* optional subtle border */
  display: block;
  margin: 0 auto 10px;         /* center inside card */
}

/* === Footer === */

footer {
  text-align: center;   /* centers the text */
  padding: 15px 0;      /* adds some spacing */
  background: #f5f5f5;  /* optional: light background */
  color: #333;          /* text color */
  font-size: 0.9rem;    /* optional: smaller text */
}


/* === Responsive adjustments === */
@media (max-width: 1200px) {
  section {
    width: 90%;
  }
}

@media (max-width: 900px) {
  .pub-item {
    flex-direction: column;
    align-items: center;
  }

  .pub-item img,
  .pub-details {
    width: 100%;        /* stack full width */
  }

  .pub-item img {
    margin-bottom: 15px;
  }
}

@media (max-width: 768px) {
  section {
    width: 95%;
    padding: 20px;
  }
}