/* Reset y base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #d0e8f2; /* Celeste suave */
  color: #1c2833; /* texto oscuro */
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* MAIN */
main {
  flex-grow: 1;
  max-width: 960px;
  margin: 20px auto;
  padding: 20px;
  background-color: white;
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
}
.section {
  display: none;
  animation: fadeIn 0.6s ease forwards;
}
.section.active {
  display: block;
}
h1, h2 {
  color: #154360;
  margin-bottom: 15px;
  font-weight: 700;
}
p {
  margin-bottom: 20px;
  font-size: 1.1rem;
  text-align: justify;
}
.btn {
  background-color: #2874a6;
  color: white;
  text-decoration: none;
  font-weight: 600;
  padding: 12px 22px;
  margin-bottom: 10px;
  border-radius: 5px;
  display: inline-block;
  transition: background-color 0.3s ease;
}
.btn:hover, .btn:focus {
  background-color: #1b4f72;
  outline: none;
}
.available {
  color: green;
  font-weight: bold;
}
.upcoming {
  color: #b5651d;
  font-weight: bold;
}
.note {
  font-style: italic;
  color: #555;
  margin-top: 0.25rem;
  margin-bottom: 1rem;
}

/* WHITEPAPER */
.whitepaper-container ul {
  list-style: disc;
  margin-left: 2rem;
}
.whitepaper-container li {
  margin-bottom: 0.5rem;
}
.whitepaper-container h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: #154360;
}
.contenido-wp, .roadmap, .economia {
  background-color: #f0f0f0;
  padding: 0.5rem 1.5rem;
  border-radius: 10px;
  border: 1px solid #ddd;
}
.fase {
  margin-bottom: 1.5rem;
  padding: 0.5rem 1rem;
  border-left: 4px solid #555;
  background-color: #fff;
  border-radius: 6px;
}
.fase h4 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: #000;
}
.roadmap {
  margin-top: 1rem;
}
.economia {
  margin: 1rem 0;
}

/* LISTAS */
.toggle-content ol li {
    margin-left: 2rem;
    padding-left: 1rem;
}
.toggle-content ol, .toggle-content ul {
    margin-bottom: 20px;
}
.link-list {
  list-style: none;
  display: flex;
  flex-direction: column;
}
.lista-ul{
  list-style: circle;
  padding-left: 35px;
}
.link-list li {
  padding: 0.5rem 1rem;
}
#nft-marketplaces, #redes ul, #redes h3 {
  margin-bottom: 20px;
}
.link-list a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: #154360;
  font-weight: 600;
  font-size: 1rem;
}
.link-list a:hover, .link-list a:focus {
  background-color: #d6eaf8;
  border-color: #2874a6;
  outline: none;
}
.link-list img {
  height: 28px;
  width: 28px;
  object-fit: contain;
}
#catalogo2, #whitepaper2 {
  text-align: center;
}
.catalogo-img, .whitepaper-img {
  display: block;
  margin: 0 auto;
  border: black solid 1px;
  max-width: 100%;
  height: auto;
  max-height: 500px;
  margin-top: 10px;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}
#contacto-email {
  color: #154360;
  font-weight: 600;
  text-decoration: underline;
  transition: color 0.3s ease;
  cursor: pointer;
}
#contacto-email:hover,
#contacto-email:focus {
  color: #2874a6; /* azul celeste claro al pasar cursor */
  text-decoration: none;
  outline: none;
}

/* TOOGLES */
.toggle-header {
  font-size: 1.2rem;
  background-color: #eaf2f8;
  border: 1px solid #154360;
  border-radius: 6px;
  padding: 12px 16px;
  margin: 20px 0 10px 0;
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #154360;
  transition: background-color 0.3s ease;
  justify-content: space-between;
}
.toggle-content {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  padding: 0 1em;
  border-width: 0;
  border-style: solid;
  border-color: #154360;
  transition: max-height 0.6s ease, opacity 0.6s ease, padding 0.6s ease, border-width 0.6s ease;
}
.toggle-content.expanded {
  max-height: 1500px; /* suficiente para todo el contenido */
  opacity: 1;
  padding: 1em;
  padding-bottom: 0;
  border-width: 1px;
}
.toggle-header .arrow {
  transition: transform 0.3s ease;
}
.toggle-header.active .arrow {
  transform: rotate(180deg);
}

#autor {
  padding: 20px;
  background-color: #eaf2f8;
  border: 1px solid #154360;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}
#autor h2 {
  font-size: 1.6rem;
}
#autor p {
  font-size: 1rem;
  margin-bottom: 10px;
  font-style: italic;
}
#autor strong,  #autor em {
  font-weight: bold;
  color: #21618c;
}

/* Animación */
@keyframes fadeIn {
  from {opacity: 0; transform: translateY(10px);}
  to {opacity: 1; transform: translateY(0);}
}

/* Responsive */
@media (max-width: 600px) {
  .header-container {
    justify-content: space-between;
  }
  #logo {
    max-height: 60px;
  }
}