/* Estilos base y variables de color */
:root{
  /* Paleta vibrante */
  --bg-gradient-1: radial-gradient(1200px 600px at 10% 10%, #ff4d6d 0%, transparent 20%),
                    radial-gradient(1000px 500px at 90% 90%, #4de0ff 0%, transparent 18%),
                    linear-gradient(180deg,#071029 0%,#081020 100%);
  --card-gradient: linear-gradient(135deg,#7f00ff 0%,#e100ff 50%,#ff6a00 100%);
  --accent-gradient: linear-gradient(90deg,#00f5a0 0%,#00d4ff 50%,#ff4d6d 100%);
  --text: #f7fbff;
  --muted: #cbdcff;
  --glass: rgba(255,255,255,0.04);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
  color:var(--text);
  background:var(--bg-gradient-1);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
.container{max-width:1100px;margin:0 auto;padding:2rem}
.site-header{padding:3rem 0;text-align:center}
.site-header h1{margin:0;font-size:2.2rem;letter-spacing:0.6px}
.site-header h1{
  background: linear-gradient(90deg,#ffb86b,#ff4d6d,#7f00ff,#00d4ff);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  text-transform:uppercase;
  letter-spacing:1px;
}
.tagline{color:var(--muted);margin-top:0.5rem}
.intro{background:linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));padding:1.6rem;border-radius:12px;margin-bottom:1.8rem}
.intro p{line-height:1.5;color:var(--muted)}
.learn-career{margin-top:0.8rem}

/* Tarjetas */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.2rem}
.card{position:relative;overflow:hidden;border-radius:14px;padding:1.6rem;box-shadow:0 10px 30px rgba(0,0,0,0.5);transition:transform .22s cubic-bezier(.2,.9,.3,1), box-shadow .22s ease}
.card::before{content:'';position:absolute;inset:0;z-index:0;background:var(--card-gradient);opacity:0.12;filter:blur(26px);transform:scale(1.02)}
.card::after{content:'';position:absolute;left:14px;right:14px;bottom:14px;height:6px;border-radius:8px;background:linear-gradient(90deg, rgba(255,255,255,0.06), rgba(0,0,0,0.06));z-index:0}
.card > *{position:relative;z-index:1}
.card h3{margin-top:0;color:#fff}
.card p{color:var(--muted)}
.card:hover{transform:translateY(-8px);box-shadow:0 28px 60px rgba(127,0,255,0.12),0 10px 30px rgba(0,0,0,0.5)}

/* Imagenes en tarjetas */
.card-img{width:72px;height:72px;display:block;margin:0 auto 12px;filter:drop-shadow(0 8px 18px rgba(0,0,0,0.45));border-radius:8px}

.btn{display:inline-block;margin-top:1rem;padding:.6rem 1rem;border-radius:12px;border:0;color:#031018;background:transparent;cursor:pointer;font-weight:800;position:relative}
.btn::before{content:'';position:absolute;inset:0;border-radius:12px;background:var(--accent-gradient);z-index:-2;filter:drop-shadow(0 18px 50px rgba(0,212,255,0.12));transform:scale(1);transition:transform .22s cubic-bezier(.2,.9,.3,1)}
.btn::after{content:'';position:absolute;inset:1px;border-radius:11px;background:linear-gradient(180deg,rgba(255,255,255,0.12),rgba(255,255,255,0.02));z-index:-1}
.btn:hover::before{transform:scale(1.06)}

/* Animación sutil de pulso para llamar la atención */
.btn.attention::before{animation:pulse 2.8s infinite}
@keyframes pulse{
  0%{transform:scale(1);opacity:1}
  50%{transform:scale(1.06);opacity:0.9}
  100%{transform:scale(1);opacity:1}
}

/* Pequeño banner decorativo */
.site-header{background:linear-gradient(90deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));border-bottom:1px solid rgba(255,255,255,0.03)}

/* Modales */
.modal{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;padding:2rem;opacity:0;pointer-events:none;transition:opacity .2s ease}
.modal[aria-hidden="false"]{opacity:1;pointer-events:auto;background:linear-gradient(180deg, rgba(0,0,0,0.5), rgba(1,8,16,0.7))}
.modal-content{
  /* Fondo del modal con degradado visible */
  background: linear-gradient(180deg, rgba(127,0,255,0.10), rgba(0,212,255,0.06));
  border-radius:14px;padding:1.6rem;max-width:760px;width:100%;
  box-shadow:0 48px 120px rgba(127,0,255,0.12), inset 0 1px 0 rgba(255,255,255,0.02);
  position:relative;border:1px solid rgba(127,0,255,0.12);overflow:hidden;
}
.modal-content::before{content:'';position:absolute;inset:-4px;background:linear-gradient(90deg,#7f00ff, #00d4ff, #ff4d6d);z-index:-2;filter:blur(40px);opacity:0.12;border-radius:18px}
.modal-content::after{content:'';position:absolute;inset:-20%;z-index:-1;background:linear-gradient(120deg, rgba(255,77,109,0.06), rgba(127,0,255,0.06), rgba(0,212,255,0.06));filter:blur(48px);opacity:0.18;transform:translateX(-10%);animation:moveGradient 10s linear infinite;border-radius:20px}
.modal-close{position:absolute;right:12px;top:10px;border:0;background:transparent;color:var(--muted);font-size:1.6rem;cursor:pointer}
.modal h3{margin-top:0}
.modal h3{margin-top:0;/* Título con texto degradado */
  background:linear-gradient(90deg,#fff7e6,#ffd7a6,#ff9bb3,#d8b3ff);-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:800}
.modal p, .modal li{color:var(--muted)}

/* Animación para overlay del modal */
@keyframes moveGradient{0%{transform:translateX(-10%)}50%{transform:translateX(10%)}100%{transform:translateX(-10%)}}

/* Estilo acentuado para el botón de cierre */
.modal-close{color:#ffecec;background:linear-gradient(90deg,#ff4d6d,#ffb86b);padding:4px 8px;border-radius:8px}

/* Enfoque accesible para botones */
.btn:focus{outline:3px solid rgba(255,126,95,0.22);outline-offset:3px}

/* Footer */
.site-footer{padding:2rem 0;text-align:center;color:var(--muted)}

/* Personalizador */
.customizer{position:fixed;right:18px;bottom:140px;width:320px;max-width:calc(100% - 40px);z-index:1300;box-shadow:0 20px 60px rgba(0,0,0,0.6);border-radius:12px;overflow:hidden;opacity:0;pointer-events:none;transform:translateY(12px);transition:all .22s ease}
.customizer[aria-hidden="false"]{opacity:1;pointer-events:auto;transform:none}
.customizer-content{background:linear-gradient(180deg, rgba(10,8,18,0.95), rgba(20,18,30,0.95));padding:1rem;color:var(--text)}
.customizer h4{margin:0 0 8px}
.theme-options{display:flex;gap:8px;margin-bottom:8px}
.theme-btn{flex:1;padding:8px;border-radius:8px;border:1px solid rgba(255,255,255,0.04);background:transparent;color:var(--text);cursor:pointer}

/* Temas aplicables por JS */
:root.theme-dark{
  --bg-gradient-1: linear-gradient(180deg,#05060a,#071029);
  --card-gradient: linear-gradient(135deg,#222 0%,#2a2a2a 100%);
  --accent-gradient: linear-gradient(90deg,#444,#666);
}

:root.theme-pastel{
  --bg-gradient-1: linear-gradient(180deg,#fff7f0,#f0fbff);
  --card-gradient: linear-gradient(135deg,#ffd7a6 0%,#c3f0ff 100%);
  --accent-gradient: linear-gradient(90deg,#ffd89b,#ffb86b);
  --text:#081018;
  --muted:#4a5568;
}

/* Responsividad */
@media (max-width:640px){
  .site-header h1{font-size:1.6rem}
  .container{padding:1rem}
}

/* Pequeños detalles: iconos y acentos */
.card::before{content:'';display:block;height:6px;width:40px;border-radius:8px;margin-bottom:.6rem;background:var(--card-gradient)}

/* Accesibilidad: enfoque visible */
.btn:focus,.modal-close:focus{outline:3px solid rgba(255,255,255,0.12);outline-offset:3px}