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

html,
body {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: "Open Sans", sans-serif;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

.section {
  scroll-margin-top: 80px;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  position: sticky;
  width: 100%;
  top: 0;
  background-color: white;
  z-index: 1000;
}

.logo {
  font-size: 24px;
  text-transform: uppercase;
  color: black;
  z-index: 1001;
}

.highlight {
  font-weight: bold;
  color: #2f89fc;
}

/* Desktop Navigation */
.nav-menu {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-menu-anchor {
  text-decoration: none;
  color: black;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-menu-anchor:hover {
  color: #2f89fc;
}

.btn-outline {
  border: 2px solid #2f89fc;
  padding: 8px 20px;
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
}

.btn-outline:hover {
  background: #2f89fc;
  color: white;
}

/* Hamburger Menu */
.hamburger {
  display: none;
  cursor: pointer;
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2001;
}

.hamburger .fa {
  font-size: 24px;
}

/* Banner */
.banner {
  background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
    url("https://preview.colorlib.com/theme/dentacare/images/bg_1.jpg")
      center/cover no-repeat;
  padding: 200px 40px 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  color: #fff;
  min-height: 100vh;
}

.banner-content {
  max-width: 600px;
}

.banner-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: bold;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.banner-description {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.btn-primary {
  padding: 12px 30px;
  background: #2f89fc;
  border: 2px solid #2f89fc;
  border-radius: 100px;
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background: transparent;
  color: white;
}

/* Mobile Styles */
@media screen and (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    height: 100vh;
    width: 70%;
    flex-direction: column;
    background-color: white;
    justify-content: center;
    align-items: center;
    padding: 40px 20px;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    transition: right 0.3s ease;
    z-index: 2000;
  }

  .nav-menu.active {
    right: 0;
  }

  .hamburger {
    display: block;
  }

  .header {
    padding-right: 60px;
  }
}

@media screen and (max-width: 480px) {
  .nav-menu {
    width: 80%;
  }

  .banner-title {
    font-size: 2rem;
  }

  .banner-description {
    font-size: 1rem;
  }
}