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

body {
  font-family: sans-serif;
  line-height: 1.6;
}

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

/* HEADER */
.header {
  position: fixed;
  width: 100%;
  background: #fff;
  border-bottom: 1px solid #eee;
  z-index: 1000;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
}

.logo {
  color: #0056d2;
}

nav ul {
  display: flex;
  gap: 20px;
  list-style: none;
}

nav a {
  text-decoration: none;
  color: #333;
}

/* HERO */
.hero {
  height: 100vh;
  position: relative;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: 1s;
}

.hero-slide.active {
  opacity: 1;
}

.hero-text {
  position: absolute;
  bottom: 20%;
  left: 10%;
  color: #fff;
}

.hero-text h2 {
  font-size: 40px;
}

/* SECTION */
.section {
  padding: 100px 0;
}

.bg-blue {
  background: #f0f6ff;
}

.grid {
  display: flex;
  gap: 20px;
}

.card {
  flex: 1;
  display: flex;
  gap: 15px;
  background: #fff;
  padding: 20px;
  border-radius: 10px;
  align-items: center;
}

.card img {
  width: 120px;
  height: 100px;
  object-fit: cover;
  border-radius: 10px;
}

/* FOOTER */
.footer {
  background: #111;
  color: #fff;
  padding: 40px 0;
}

.footer-info {
  text-align: center;
  font-size: 14px;
}

.copyright {
  text-align: center;
  margin-top: 20px;
  font-size: 12px;
}

/* TOP BUTTON */
#topBtn {
  position: fixed;
  right: 20px;
  bottom: 20px;
  background: #0056d2;
  color: #fff;
  border: none;
  padding: 10px 15px;
  cursor: pointer;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .grid {
    flex-direction: column;
  }
}