:root { --nav-height: 72px; }
body.intro-page { padding-top: var(--nav-height); }

.intro-page {
    font-family: 'Futura', 'Inter', 'Avenir', 'Helvetica Neue', Arial, sans-serif;
    color: black;
    line-height: 1.6;
    background-color: #f5f6fa;
}

.intro-page .container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

.intro-page .hero {
    background:  url("/images/tree-forest-nature-landscape.jpg") center center / cover no-repeat;
    color: white;
    padding: 80px 0;
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    padding: 120px 0 80px;
}

/* darken Image*/
.intro-page .hero::before{
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.35);
}

/*fix text over image*/
.intro-page .hero .container{
  position: relative;
  z-index: 1;
}

.intro-page .hero h1 {
    font-family: 'Source Serif Pro', 'Playfair Display', serif;
    font-size: 3rem;
    margin-bottom: 20px;
}

.intro-page .hero p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.intro-page .body {
  max-width: 700px;
  margin: 2rem auto;
  padding: 2rem;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}

li {
  margin-left: 5px;
}

.btn-next {
  display: block;
  width: fit-content;
  margin: 1.5rem auto 0 auto;
  padding: 0.8rem 1.2rem;
  background: #008080;
  border: none;
  color: white;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s ease, transform 0.1s ease;
}

.btn-next:hover {
  background: #005050;
  transform: translateY(-2px);
}

.btn-next:active {
  transform: translateY(0);
}

.btn-next:disabled {
    background: #cccccc;
    color: #888888;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-next:disabled:hover {
    background: #cccccc;
    transform: none;
}

.btn-next:disabled:active {
    transform: none;
}

.btn-next:not(:disabled):hover {
    background: #005050;
    transform: translateY(-2px);
}

.btn-next:not(:disabled):active {
    transform: translateY(0);
}