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

:root {
  color-scheme: dark;
  --primary-bg: #05081b;
  --secondary-bg: #0f1528;
  --accent-bg: #1a2332;
  --text-primary: #ffffff;
  --text-secondary: #b8c5d6;
  --title-presentacion:#CAF0F8;
  --accent-color: #0260ed;
  --accent-hover: #024bb8;
  --border-color: #160078;
  --shadow-light: rgba(2, 96, 237, 0.1);
  --shadow-medium: rgba(2, 96, 237, 0.2);
}

body {
  font-family: 'Poppins', sans-serif;
  background: var(--primary-bg);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

.container {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
header {
  background: radial-gradient(
    ellipse at top,
    var(--border-color) 0%,
    transparent 65%
  );
  padding: 2rem 0;
  text-align: center;
}

.header-content {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.logo {
  width: 40px;
  max-width: 40px;
  height: auto;
}

.welcome-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  background-clip: text;
  text-align: center;
  margin-bottom: 0;
}

main {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 1rem 0;
}

/* ***********************************STYLES PARA PRESENTACION******************************************/
.presentacion{
  max-width: 100%;
  margin: 0 auto 2rem auto;
  text-align: center;
}
.p-title {
  color: var(--title-presentacion)!important;
  font-style: italic;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  text-align: center;
}

.presentacion-wrapper {
  width: 100%;
  max-width: 100%;
  margin: 1rem auto;
  aspect-ratio: 16/9;
  overflow: hidden;
  box-shadow: 0 0 30px rgba(0,0,0,0.4);
}

.presentacion-wrapper iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.developers-card {
  padding: 2rem;
}

.developers-card h2{
  margin-bottom: 1rem;
}

/* *****************************************************************************************************/


.intro {
  max-width: 800px;
  margin: 0 auto 2rem auto;
  text-align: center;

  h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: 0.10em;
    text-transform: uppercase;
  }
}

.presentacion-section,
.intro-section,
.repos-section,
.project-section,
.developers-section,
.documentos-section {
  width: 100%;
}

.intro-card,
.repos-card,
.project-card,
.documentos-card {
  background: var(--secondary-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
  transition: box-shadow 0.3s ease;
}

.intro-card h2,
.repos-card h2,
.project-card h2,
.documentos-card h2 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.10em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.intro-card p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.7;
}

.frontend-link {
  margin-top: 1rem;
  font-size: 0.8rem;

  a {
    color: var(--accent-color);
  }
}

.project-info p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.developers-info p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.documentos-info p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.documentos-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.documentos-list li {
  background: var(--accent-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem;
  transition: all 0.3s ease;
}

.documentos-list li:hover {
  background: var(--accent-color);
  border-color: var(--accent-color);
  box-shadow: 0 8px 24px var(--shadow-light);
}

.documentos-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  transition: color 0.3s ease;
}

.documentos-list a::after {
  content: '';
  width: 16px;
  height: 16px;
  background-image: url("data:image/svg+xml,%3Csvg width='16' height='16' viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M7 17L17 7' stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3Cpath d='M7 7h10v10' stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  flex-shrink: 0;
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

.documentos-list li:hover a::after {
  opacity: 1;
}

.documentos-list a:hover {
  color: rgba(255, 255, 255, 0.95);
}

.link-options {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 1rem;
}

.api-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(
    135deg,
    var(--accent-color) 0%,
    var(--accent-hover) 100%
  );
  color: white;
  text-decoration: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 500;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px var(--shadow-light);
  margin-top: 1rem;
}

.api-link:hover {
  box-shadow: 0 6px 24px var(--shadow-medium);
  background: linear-gradient(135deg, var(--accent-hover) 0%, #2e6fa0 100%);
}

.external-link-icon {
  width: 20px;
  height: 20px;
  color: #ffffff;
  fill: white;
}

.repo-links {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.developer-links {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.repo-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--accent-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.developer-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--accent-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.repo-link:hover,
.developer-link:hover {
  background: var(--accent-color);
  border-color: var(--accent-color);
  box-shadow: 0 8px 24px var(--shadow-light);
}

.repo-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.developer-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.repo-header,
.developer-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tech-logo {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  filter: brightness(1);
  transition: filter 0.3s ease;
  color: #000;
}

.developer-avatar {
  width: 40px;
  height: 40px;
  border-radius: 100%;
  flex-shrink: 0;
  filter: brightness(1);
  transition: filter 0.3s ease;
}

.repo-link:hover .tech-logo {
  filter: brightness(1.2);
}

.developer-link:hover .tech-logo {
  filter: brightness(1.2);
}

.repo-info strong,
.developer-info strong {
  font-weight: 600;
}

.repo-info span,
.developer-info span {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color 0.3s ease;
}

.repo-link:hover .repo-info span,
.developer-link:hover .developer-info span {
  color: rgba(255, 255, 255, 0.9);
}

.project-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--accent-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.3s ease;
  max-width: 100%;
}

.project-link:hover {
  background: var(--accent-color);
  border-color: var(--accent-color);
  box-shadow: 0 8px 24px var(--shadow-light);
}

.project-details {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.project-details strong {
  font-weight: 600;
}

.project-details span {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color 0.3s ease;
}

.project-link:hover .project-details span {
  color: rgba(255, 255, 255, 0.9);
}

footer {
  padding: 2rem 0;
  margin-top: 2rem;
  background: radial-gradient(
    ellipse at bottom,
    var(--border-color) 0%,
    transparent 65%
  );
}

.footer-content {
  text-align: center;
}

.footer-content p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 15px;
  }

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

  .intro-card,
  .repos-card,
  .documentos-card {
    padding: 1.5rem;
  }

  .repo-links {
    grid-template-columns: 1fr;
  }

  .developer-links {
    grid-template-columns: 1fr;
  }

  .header-content {
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .welcome-title {
    font-size: 1.5rem;
  }

  .intro-card h2,
  .repos-card h2,
  .developers-card h2,
  .documentos-card h2 {
    font-size: 1.5rem;
  }

  .intro-card,
  .repos-card,
  .developers-card,
  .documentos-card {
    padding: 1rem;
  }

  .api-link {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.intro-card,
.repos-card,
.project-card,
.developers-card,
.documentos-card {
  animation: fadeIn 0.6s ease-out;
}

.repos-card {
  animation-delay: 0.2s;
}

.project-card {
  animation-delay: 0.4s;
}

.documentos-card {
  animation-delay: 0.6s;
}

.developers-card {
  animation-delay: 0.8s;
}

/* SVG Icons styling */
svg {
  flex-shrink: 0;
}