/* ========== GLOBAL STYLES ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Poppins", sans-serif;
  background-color: #f4f6fb;
  color: #222;
  line-height: 1.6;
}

a {
  text-decoration: none;
}

/* ========== HEADER ========== */
header {
  background: linear-gradient(90deg, #1a2a6c, #1e3c92);
  color: #fff;
  padding: 0.8rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
  position: sticky;
  top: 0;
  z-index: 100;
}

/* BRAND SECTION */
.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

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

.brand h1 {
  font-size: 1.4rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.2rem;
}

.subtitle {
  font-size: 0.9rem;
  opacity: 0.9;
  color: #d0dcff;
}

/* NAV LINKS */
nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

nav a {
  color: #fff;
  font-weight: 500;
  transition: all 0.2s ease;
}

nav a:hover {
  color: #b3e5ff;
  transform: translateY(-2px);
}

/* ========== MAIN SECTION ========== */
main {
  max-width: 900px;
  margin: 3rem auto;
  text-align: center;
  padding: 0 1rem;
}

main h1 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

main h3 {
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 2rem;
  color: #333;
}

/* BUTTON CONTAINER */
.button-container {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.buttons {
  background-color: #43a047;
  color: #fff;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.buttons:hover {
  background-color: #388e3c;
  transform: translateY(-2px);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  nav {
    flex-wrap: wrap;
    gap: 1rem;
  }
  .brand {
    justify-content: center;
  }
  .button-container {
    flex-direction: column;
    align-items: center;
  }
}

.-img {
  display: block;
  margin: 2rem auto;
  max-width: 700px;
}

.survey-img {
  display: block;
  margin: 2rem auto;
  max-width: 220px;
}

.main-list {
  text-align: center;
}

.robotics-list {
  text-align: left;
}

.webdesign-list {
  text-align: left;
}