/* styles.css — estilo moderno y responsivo para la página principal de Pablo */
:root{
  --bg-1: #0f172a; /* azul oscuro */
  --bg-2: #111827; /* casi negro */
  --accent: #7c3aed; /* morado */
  --accent-2: #06b6d4; /* cyan */
  --glass: rgba(255,255,255,0.06);
  --muted: #94a3b8;
  --card-bg: rgba(255,255,255,0.03);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  padding-top:100px;
  font-family:Inter, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
  background: linear-gradient(180deg,var(--bg-1) 0%, var(--bg-2) 100%);
  color:#e6eef8; -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
}

/* Navegación fija */
.navbar{
  position:fixed;
  top:0;
  left:0;
  right:0;
  background:rgba(15,23,42,0.95);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,0.05);
  z-index:1000;
  box-shadow:0 4px 20px rgba(0,0,0,0.3);
}
.nav-container{
  max-width:1400px;
  margin:0 auto;
  padding:0 20px;
  display:flex;
  align-items:center;
  justify-content:center;
  height:100px;
}
.nav-menu{
  display:flex;
  gap:30px;
}
.nav-link{
  padding:22px 60px;
  color:var(--muted);
  text-decoration:none;
  border-radius:16px;
  transition:all 0.25s;
  font-weight:700;
  font-size:1.5rem;
  letter-spacing:0.5px;
}
.nav-link:hover{
  color:#fff;
  background:rgba(255,255,255,0.1);
  transform:translateY(-3px);
  box-shadow:0 4px 12px rgba(255,255,255,0.1);
}
.nav-link.active{
  color:#fff;
  background:linear-gradient(135deg, var(--accent) 0%, #5b21b6 100%);
  box-shadow:0 8px 20px rgba(124,58,237,0.5);
  transform:scale(1.05);
}

/* Sistema de secciones */
.section{
  display:none;
  opacity:0;
  animation:fadeIn 0.4s ease forwards;
}
.section.active{
  display:block;
}
@keyframes fadeIn{
  from{opacity:0;transform:translateY(10px)}
  to{opacity:1;transform:translateY(0)}
}

.site{min-height:100vh;display:flex;flex-direction:column}
.hero{padding:72px 20px;text-align:center;background:linear-gradient(180deg,rgba(255,255,255,0.02),transparent);box-shadow:0 6px 30px rgba(2,6,23,0.6);}
.hero-inner{max-width:980px;margin:0 auto}
.name{font-size:2.4rem;margin:0 0 8px;letter-spacing:0.2px;background:linear-gradient(135deg, #fff 0%, var(--accent-2) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
.subtitle{color:#fff;font-size:1.15rem;margin:0 0 8px;font-weight:600;}
.tagline{color:var(--muted);margin:0 0 24px;font-size:1.05rem}
.actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:10px;background:linear-gradient(90deg,var(--accent),#5b21b6);color:white;text-decoration:none;font-weight:600;box-shadow:0 6px 18px rgba(124,58,237,0.18);transition:transform .14s ease,box-shadow .14s ease}
.btn:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(124,58,237,0.22)}
.btn-outline{background:transparent;border:1px solid rgba(255,255,255,0.06);color:#dbeafe}
.btn-outline:hover{background:rgba(255,255,255,0.03)}

.btn-download{
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  box-shadow: 0 6px 18px rgba(16,185,129,0.25);
}

.btn-download:hover{
  box-shadow: 0 10px 30px rgba(16,185,129,0.35);
}

/* Content wrapper para secciones */
.content-wrapper{
  max-width:1100px;
  margin:0 auto;
  padding:40px 24px;
}
.section-title{
  font-size:2rem;
  margin:0 0 12px;
  text-align:center;
  background:linear-gradient(135deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}

/* Header de Sobre Mí */
.about-header{
  text-align:center;
  padding:60px 20px 40px;
  background:linear-gradient(180deg,rgba(255,255,255,0.02),transparent);
  border-radius:16px;
  margin-bottom:24px;
}
.about-header .name{
  font-size:2.8rem;
  margin:0 0 12px;
}
.about-header .subtitle{
  font-size:1.2rem;
  margin:0 0 24px;
}
.about-header .actions{
  justify-content:center;
}

/* Sobre mí - Grid de tarjetas */
.about-grid{
  display:block;
  max-width:900px;
  margin:0 auto;
}
.about-card{
  background:linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  border:1px solid rgba(255,255,255,0.05);
  border-radius:12px;
  padding:32px;
  margin-bottom:24px;
}
.about-card h3{
  margin:0 0 20px;
  font-size:1.5rem;
  display:flex;
  align-items:center;
  gap:10px;
  padding-bottom:12px;
  border-bottom:2px solid var(--accent);
}
.about-card h4{
  margin:20px 0 6px;
  font-size:1.15rem;
  color:var(--accent-2);
  font-weight:600;
}
.about-card h4:first-of-type{margin-top:0;}
.about-card p{
  margin:8px 0;
  line-height:1.7;
  color:#d1d5db;
}
.info-list{
  list-style:none;
  padding:0;
  margin:12px 0;
}
.info-list li{
  padding:10px 0;
  border-bottom:1px solid rgba(255,255,255,0.05);
  line-height:1.6;
}
.info-list li:last-child{border-bottom:none;}
.info-list strong{color:#fff;font-weight:600;}
.info-list a{color:var(--accent-2);text-decoration:none;}
.info-list a:hover{text-decoration:underline;}
.education-item, .experience-item{
  margin-bottom:28px;
  padding:20px;
  background:rgba(255,255,255,0.02);
  border-radius:8px;
  border-left:3px solid var(--accent);
}
.education-item:last-child, .experience-item:last-child{
  margin-bottom:0;
}

/* Skills grid */
.skills-grid{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:16px;
}
.skill-tag{
  background:linear-gradient(135deg, var(--accent) 0%, #5b21b6 100%);
  color:#fff;
  padding:8px 16px;
  border-radius:20px;
  font-size:0.9rem;
  font-weight:600;
  box-shadow:0 2px 8px rgba(124,58,237,0.2);
}

/* Proyectos y Aplicaciones */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:24px;}
.card{display:block;padding:20px;border-radius:12px;background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));border:1px solid rgba(255,255,255,0.03);text-decoration:none;color:inherit;transition:transform .16s ease,box-shadow .16s ease}
.card:hover{transform:translateY(-6px);box-shadow:0 18px 50px rgba(2,6,23,0.6)}
.card h3{margin:6px 0 8px;font-size:1.1rem}
.card p{margin:0;color:var(--muted);font-size:0.95rem;line-height:1.5}
.card .icon{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;background:linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));margin-bottom:8px}
.tool-icon{
  background:linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  box-shadow:0 4px 12px rgba(124,58,237,0.3);
}
.project-tags, .tool-features{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  margin-top:12px;
}
.tag{
  background:rgba(124,58,237,0.2);
  border:1px solid var(--accent);
  color:var(--accent-2);
  padding:4px 10px;
  border-radius:12px;
  font-size:0.8rem;
  font-weight:600;
}
.tool-features span{
  color:var(--muted);
  font-size:0.85rem;
  display:block;
  width:100%;
  margin-top:4px;
}
.more-note{margin-top:24px;color:var(--muted);text-align:center;font-style:italic}
.muted{color:var(--muted);text-align:center;margin:0 0 8px}

/* Sección de Contacto */
.contact-container{
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 4rem;
  max-width: 1200px;
  margin: 0 auto;
}

.contact-info{
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-item{
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  padding: 1.5rem;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.05), rgba(6, 182, 212, 0.05));
  border-radius: 16px;
  border: 1px solid rgba(124, 58, 237, 0.2);
  transition: all 0.3s ease;
}

.contact-item:hover{
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(6, 182, 212, 0.1));
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(124, 58, 237, 0.2);
}

.contact-icon{
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--accent);
  border-radius: 12px;
  color: white;
  flex-shrink: 0;
}

.contact-content{
  flex: 1;
}

.contact-content h4{
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--accent);
  margin: 0 0 0.5rem 0;
  font-weight: 600;
}

.contact-content a{
  color: #e5e7eb;
  text-decoration: none;
  font-size: 1rem;
  transition: all 0.3s ease;
  font-weight: 500;
}

.contact-content a:hover{
  color: var(--accent-2);
  text-decoration: underline;
}

.contact-content p{
  color: #e5e7eb;
  font-size: 1rem;
  margin: 0;
  font-weight: 500;
}

.contact-social{
  margin-top: 1rem;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-social h4{
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--accent);
  margin: 0 0 1rem 0;
  font-weight: 600;
}

.social-links{
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.social-link{
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 1.2rem;
  background: rgba(124, 58, 237, 0.1);
  border: 1px solid rgba(124, 58, 237, 0.3);
  border-radius: 12px;
  color: #e5e7eb;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

.social-link:hover{
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  transform: translateX(5px);
  box-shadow: 0 5px 20px rgba(124, 58, 237, 0.4);
}

/* Formulario de contacto */
.contact-form-wrapper{
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.05), rgba(6, 182, 212, 0.05));
  border: 1px solid rgba(124, 58, 237, 0.2);
  border-radius: 20px;
  padding: 2.5rem;
}

.contact-form-wrapper h3{
  font-size: 2rem;
  margin: 0 0 0.5rem 0;
  color: white;
}

.form-description{
  color: rgba(255, 255, 255, 0.6);
  margin: 0 0 2rem 0;
  font-size: 1rem;
}

.contact-form{
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-row{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.form-group{
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.form-group label{
  color: var(--accent-2);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea{
  padding: 1rem 1.2rem;
  background: rgba(0, 0, 0, 0.3);
  border: 2px solid rgba(124, 58, 237, 0.3);
  border-radius: 12px;
  color: white;
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.3s ease;
  width: 100%;
  box-sizing: border-box;
}

.form-group input::placeholder,
.form-group textarea::placeholder{
  color: rgba(255, 255, 255, 0.3);
}

.form-group input:focus,
.form-group textarea:focus{
  outline: none;
  border-color: var(--accent);
  background: rgba(0, 0, 0, 0.4);
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.15);
}

.form-group textarea{
  resize: vertical;
  min-height: 150px;
}

.btn-submit{
  margin-top: 0.5rem;
  padding: 1.2rem 2.5rem;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none;
  color: white;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
  width: 100%;
}

.btn-submit:hover{
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(124, 58, 237, 0.5);
}

/* Animaciones */
@keyframes fadeInUp{
  from{
    opacity: 0;
    transform: translateY(30px);
  }
  to{
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin{
  from{
    transform: rotate(0deg);
  }
  to{
    transform: rotate(360deg);
  }
}

.card,
.about-card,
.contact-item,
.contact-form-wrapper{
  opacity: 0;
  animation: none;
}

.card.animate-in,
.about-card.animate-in,
.contact-item.animate-in,
.contact-form-wrapper.animate-in{
  animation: fadeInUp 0.6s ease forwards;
}

/* Delay escalonado para animaciones */
.card:nth-child(1).animate-in { animation-delay: 0.1s; }
.card:nth-child(2).animate-in { animation-delay: 0.2s; }
.card:nth-child(3).animate-in { animation-delay: 0.3s; }
.card:nth-child(4).animate-in { animation-delay: 0.4s; }
.card:nth-child(5).animate-in { animation-delay: 0.5s; }
.card:nth-child(6).animate-in { animation-delay: 0.6s; }
.card:nth-child(7).animate-in { animation-delay: 0.7s; }
.card:nth-child(8).animate-in { animation-delay: 0.8s; }
.card:nth-child(9).animate-in { animation-delay: 0.9s; }
.card:nth-child(10).animate-in { animation-delay: 1s; }

.about-card:nth-child(1).animate-in { animation-delay: 0.1s; }
.about-card:nth-child(2).animate-in { animation-delay: 0.2s; }
.about-card:nth-child(3).animate-in { animation-delay: 0.3s; }
.about-card:nth-child(4).animate-in { animation-delay: 0.4s; }
.about-card:nth-child(5).animate-in { animation-delay: 0.5s; }
.about-card:nth-child(6).animate-in { animation-delay: 0.6s; }

.contact-item:nth-child(1).animate-in { animation-delay: 0.1s; }
.contact-item:nth-child(2).animate-in { animation-delay: 0.2s; }
.contact-item:nth-child(3).animate-in { animation-delay: 0.3s; }

.site-footer{margin-top:auto;padding:32px 18px;text-align:center;color:var(--muted);font-size:0.9rem;border-top:1px solid rgba(255,255,255,0.02);}
.site-footer a{color:var(--accent-2);text-decoration:none}
.site-footer a:hover{text-decoration:underline;}

/* Responsive tweaks */
@media (min-width:900px){.name{font-size:3rem}}
@media (max-width:768px){
  .nav-container{
    height:auto;
    padding:18px 20px;
  }
  .nav-menu{
    width:100%;
    justify-content:center;
    gap:14px;
    flex-wrap: wrap;
  }
  .nav-link{padding:12px 20px;font-size:1rem;}
  .about-card{padding:24px 20px;}
  .about-card h3{font-size:1.3rem;}
  .contact-container{
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .form-row{
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}
@media (max-width:420px){
  .hero{padding:40px 12px}
  .card{padding:14px}
  .nav-menu{gap:8px;}
  .nav-link{padding:10px 16px;font-size:0.95rem;}
  .contact-form-wrapper{
    padding: 1.5rem;
  }
  .contact-form-wrapper h3{
    font-size: 1.5rem;
  }
  .contact-item{
    padding: 1rem;
  }
  .contact-social{
    padding: 1rem;
  }
  .actions{
    flex-direction: column;
  }
  .btn{
    width: 100%;
    justify-content: center;
  }
}

/* Small focus outlines */
a:focus{outline:3px solid rgba(124,58,237,0.18);outline-offset:2px}

/* Make images/iframes inside project cards responsive */
.card img, .card iframe{max-width:100%;border-radius:8px}

/* Utility */
.small{font-size:0.85rem;color:var(--muted)}