* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
.header {
  background-color: white;
  padding: 15px 0;
  position: relative;
  z-index: 100;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
.navigation .marker-line {
  background-color: #b7b7b7;
  opacity: 80%;
  position: absolute;
  bottom: -10;
  left: -10;
  width: 400px;
  height: 50px;
  border-radius: 30px;
  z-index: 10;
}
.header .container {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  align-items: center;
  gap: 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 15px;
  justify-self: start;
  z-index: 12;
}
.logo-icon {
  width: 171px;
  height: 64px;
}
.nav-link {
  font-family: "helvetica-lt-pro", sans-serif;
  font-size: 16px;
  color: #2c5f5d;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
  z-index: 11;
}
.navigation {
  display: flex;
  gap: 30px;
  justify-content: center;
  align-items: center;
  justify-self: center;
  position: fixed;
}
body {
  font-family: "acumin-pro", sans-serif;
  background-color: #f7f7f7;
  color: #333;
}

.collagen-section {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  justify-content: space-between;
  padding: 60px 40px;
  gap: 40px;
  background-color: #f7f7f7;
  position: relative;
  flex-wrap: wrap;
}

.text-column {
  flex: 1;
  max-width: 600px;
  z-index: 2;
}

.image-column {
  flex: 1;
  background-image: url('./images/cell-bink.gif');
  max-width: 500px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.cell-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

h1 {
  font-size: 3rem;
  color: #255c52;
  margin-bottom: 20px;
  line-height: 1.2;
}

.sub-highlight {
  font-size: 1.5rem;
  color: #255c52;
}

p {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 30px;
  color: #555;
}

.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  padding: 10px 16px;
  border: none;
  text-decoration: none;
  color: #ffffff;
  background-color: #255c52;
  border-radius: 20px;
  font-size: 0.9rem;
  transition: background-color 0.3s;
}

.button:hover {
  background-color: #1e4a42;
}

.button.filled {
  background-color: #1e4a42;
}

/* Responsivo */
@media (max-width: 768px) {
  .collagen-section {
    flex-direction: column;
    padding: 40px 20px;
  }

  h1 {
    font-size: 2.2rem;
  }

  .text-column,
  .image-column {
    max-width: 100%;
  }

  .button-group {
    justify-content: flex-start;
  }
}