:root{
  --bg: #121212;
  --panel: #1b1b1b;
  --panel-2: #232323;
  --text: #e8e8e8;
  --muted: #b6b6b6;
  --border: rgba(255,255,255,.10);

  --gold: #ffd700;

  /* Colores “por plataforma/skill” */
  --js:   #F7DF1E;
  --java: #007396;
  --mysql:#4479A1;
  --pg:   #336791;
  --mongo:#47A248;
  --linux:#00ff7b;
  --pawn: #f2f2f2;

  --radius: 18px;
  --shadow: 0 18px 50px rgba(0,0,0,.55);
}

*{ box-sizing: border-box; }
html{ color-scheme: dark; }
body{
  margin:0;
  background: radial-gradient(900px 600px at 20% 0%, rgba(255,215,0,.07), transparent 55%),
              radial-gradient(900px 600px at 80% 10%, rgba(79,195,247,.06), transparent 55%),
              var(--bg);
  color: var(--text);
  font-family: "Roboto", system-ui, -apple-system, Segoe UI, Arial, sans-serif;
  line-height: 1.6;
}

.container{
  width:min(1100px, 100% - 2rem);
  margin-inline:auto;
}

.skip-link{
  position:absolute;
  left:-999px;
  top: 0.75rem;
  background: #000;
  color: #fff;
  padding: .75rem 1rem;
  border-radius: 12px;
  z-index: 9999;
}
.skip-link:focus{
  left: 1rem;
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* Header / Nav */
.site-header{
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background: rgba(18,18,18,.72);
  border-bottom: 1px solid var(--border);
}

.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 1rem;
  padding: .85rem 1rem;
  width:min(1100px, 100% - 2rem);
  margin-inline:auto;
}

.brand{
  font-weight: 700;
  letter-spacing: .5px;
  text-decoration:none;
  color: var(--text);
}
.brand:hover{ color: var(--gold); }

.nav-toggle{
  display:none;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: .55rem .85rem;
}

.nav-links{
  list-style:none;
  display:flex;
  gap: 1.1rem;
  margin:0;
  padding:0;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav-links a{
  color: var(--muted);
  text-decoration:none;
  font-weight: 400;
  padding: .35rem .55rem;
  border-radius: 12px;
  transition: transform .2s ease, color .2s ease, background .2s ease;
}
.nav-links a:hover{
  color: var(--text);
  background: rgba(255,255,255,.06);
  transform: translateY(-1px);
}
.nav-links a:focus-visible{
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* Secciones */
.main{ min-height: 100vh; }

.section{
  padding: 4.5rem 0;
}
.section-title{
  margin: 0 0 1.5rem;
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  color: #dcdcdc;
}

/* Hero */
.hero{
  padding: 5.5rem 0 4.5rem;
}
.hero-inner{
  text-align:center;
  padding: 2.5rem 0 1rem;
}
.kicker{
  color: var(--muted);
  margin: 0 0 .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: .9rem;
}
.hero-title{
  margin:0 0 .4rem;
  font-size: clamp(2.8rem, 7vw, 4.6rem);
  line-height: 1.05;
  background: linear-gradient(45deg, var(--gold), #ffef7a);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 26px rgba(255,215,0,.18);
}
.hero-subtitle{
  margin: 0 0 1.4rem;
  color: var(--muted);
  font-size: 1.08rem;
}
.hero-cta{
  display:flex;
  gap: .9rem;
  justify-content:center;
  flex-wrap: wrap;
  margin-bottom: 1.6rem;
}
.hero-badges{
  display:flex;
  gap: .6rem;
  justify-content:center;
  flex-wrap: wrap;
}

.badge{
  display:inline-flex;
  align-items:center;
  padding: .35rem .7rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--muted);
  font-size: .92rem;
  position: relative;
}
.badge::before{
  content:"";
  width: .65rem;
  height: .65rem;
  border-radius: 50%;
  margin-right: .55rem;
  background: var(--gold);
  box-shadow: 0 0 18px rgba(255,215,0,.25);
}
.badge[data-accent="js"]::before{ background: var(--js); }
.badge[data-accent="java"]::before{ background: var(--java); }
.badge[data-accent="linux"]::before{ background: var(--linux); }

/* Cards */
.card{
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.03));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  box-shadow: var(--shadow);
}
.card-grid{
  display:grid;
  gap: 1.2rem;
}

/* Datos personales (DL) */
.info-list{
  margin:0;
  display:grid;
  gap: .9rem;
}
.info-item{
  display:grid;
  grid-template-columns: 140px 1fr;
  gap: .8rem;
  padding: .75rem 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.info-item:last-child{ border-bottom: none; }
.info-item dt{
  font-weight: 700;
  color: #d7d7d7;
}
.info-item dd{
  margin:0;
  color: var(--muted);
}
.info-item a{
  color: #78d5ff;
  text-decoration:none;
}
.info-item a:hover{ text-decoration: underline; }
.info-item a:focus-visible{
  outline: 2px solid #78d5ff;
  outline-offset: 3px;
  border-radius: 10px;
}

.privacy-note{
  margin:0;
  color: var(--muted);
  font-size: .95rem;
}

/* Skills */
.skills-grid{
  display:grid;
  grid-template-columns: repeat( auto-fit, minmax(240px, 1fr) );
  gap: 1.2rem;
}

.skill-card{
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.03));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.skill-card::before{
  content:"";
  position:absolute;
  inset: -60px -60px auto auto;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(255,215,0,.12);
  filter: blur(2px);
  transform: translate(40px, -40px);
}

.skill-card[data-accent="js"]::before{ background: rgba(247,223,30,.18); }
.skill-card[data-accent="java"]::before{ background: rgba(0,115,150,.18); }
.skill-card[data-accent="mysql"]::before{ background: rgba(68,121,161,.18); }
.skill-card[data-accent="pg"]::before{ background: rgba(51,103,145,.18); }
.skill-card[data-accent="mongo"]::before{ background: rgba(71,162,72,.18); }
.skill-card[data-accent="linux"]::before{ background: rgba(0,255,123,.16); }
.skill-card[data-accent="pawn"]::before{ background: rgba(242,242,242,.14); }

.skill-card:hover{
  transform: translateY(-7px);
}
.skill-card:focus-visible{
  outline: 2px solid var(--gold);
  outline-offset: 4px;
}

.skill-card[data-accent="js"]:hover{ border-color: rgba(247,223,30,.55); box-shadow: 0 20px 55px rgba(247,223,30,.10); }
.skill-card[data-accent="java"]:hover{ border-color: rgba(0,115,150,.55); box-shadow: 0 20px 55px rgba(0,115,150,.10); }
.skill-card[data-accent="mysql"]:hover{ border-color: rgba(68,121,161,.55); box-shadow: 0 20px 55px rgba(68,121,161,.10); }
.skill-card[data-accent="pg"]:hover{ border-color: rgba(51,103,145,.55); box-shadow: 0 20px 55px rgba(51,103,145,.10); }
.skill-card[data-accent="mongo"]:hover{ border-color: rgba(71,162,72,.55); box-shadow: 0 20px 55px rgba(71,162,72,.10); }
.skill-card[data-accent="linux"]:hover{ border-color: rgba(0,255,123,.55); box-shadow: 0 20px 55px rgba(0,255,123,.10); }
.skill-card[data-accent="pawn"]:hover{ border-color: rgba(242,242,242,.45); box-shadow: 0 20px 55px rgba(255,255,255,.06); }

.skill-icon{
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display:grid;
  place-items:center;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.10);
  color: var(--text);
  font-weight: 700;
  font-family: "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  margin-bottom: .75rem;
}

.skill-title{ margin: 0 0 .25rem; font-size: 1.2rem; }
.skill-desc{ margin: 0; color: var(--muted); }

/* Placeholder proyectos */
.placeholder{
  text-align:center;
  position: relative;
}
.placeholder-title{ margin: 0 0 .5rem; }
.placeholder-desc{ margin:0; color: var(--muted); }

/* Botones */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: .75rem 1.05rem;
  border-radius: 14px;
  border: 1px solid var(--border);
  text-decoration:none;
  color: var(--text);
  transition: transform .2s ease, background .2s ease, border-color .2s ease;
}
.btn:hover{ transform: translateY(-1px); }
.btn:focus-visible{
  outline: 2px solid var(--gold);
  outline-offset: 4px;
}

.btn-primary{
  background: rgba(255,215,0,.14);
  border-color: rgba(255,215,0,.30);
}
.btn-primary:hover{
  background: rgba(255,215,0,.20);
  border-color: rgba(255,215,0,.45);
}
.btn-ghost{
  background: rgba(255,255,255,.04);
}
.btn-ghost:hover{
  background: rgba(255,255,255,.07);
}

.contact-card .contact-actions{
  margin: .75rem 0 0;
  display:flex;
  gap: .9rem;
  flex-wrap: wrap;
}

/* Footer */
.site-footer{
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  color: var(--muted);
}

/* Responsive nav */
@media (max-width: 820px){
  .nav-toggle{ display:inline-flex; }
  .nav-links{
    display:none;
    width: 100%;
    padding: .75rem;
    border-radius: 16px;
    background: rgba(255,255,255,.04);
    border: 1px solid var(--border);
  }
  .nav-links.is-open{ display:flex; }
  .nav{ flex-wrap: wrap; }
}

/* Datos responsive */
@media (max-width: 520px){
  .info-item{
    grid-template-columns: 1fr;
    gap: .2rem;
  }
}

/* Accesibilidad: reduce motion si el usuario lo pide */
@media (prefers-reduced-motion: reduce){
  *{
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}