/* ===========================================================
   Aurora Glass — Portafolio Johan Fabián Paredes Bueñano
   =========================================================== */
:root{
  --bg:#070912;
  --bg-2:#0b0f1f;
  --text:#eaf0ff;
  --muted:#9aa6c8;
  --card:rgba(255,255,255,.055);
  --card-brd:rgba(255,255,255,.11);
  --card-hi:rgba(255,255,255,.16);
  --violet:#8b5cf6;
  --indigo:#6366f1;
  --cyan:#22d3ee;
  --emerald:#34d399;
  --grad:linear-gradient(120deg,#a78bfa 0%,#6366f1 45%,#22d3ee 100%);
  --grad-soft:linear-gradient(120deg,rgba(167,139,250,.18),rgba(34,211,238,.14));
  --radius:20px;
  --maxw:1120px;
  --shadow:0 20px 60px -20px rgba(4,6,20,.75);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.1;font-weight:800;letter-spacing:-.02em}
::selection{background:rgba(139,92,246,.4)}

/* ---------- Aurora background ---------- */
.aurora{position:fixed;inset:0;z-index:-2;overflow:hidden;background:
  radial-gradient(1200px 700px at 80% -10%,rgba(99,102,241,.16),transparent 60%),
  radial-gradient(900px 600px at 0% 20%,rgba(34,211,238,.10),transparent 55%),
  var(--bg);}
.aurora__blob{position:absolute;border-radius:50%;filter:blur(90px);opacity:.55;
  mix-blend-mode:screen;will-change:transform}
.aurora__blob--1{width:46vw;height:46vw;left:-8vw;top:-6vw;
  background:radial-gradient(circle,#7c3aed,transparent 62%);animation:float1 22s ease-in-out infinite}
.aurora__blob--2{width:40vw;height:40vw;right:-6vw;top:8vw;
  background:radial-gradient(circle,#22d3ee,transparent 62%);animation:float2 26s ease-in-out infinite}
.aurora__blob--3{width:38vw;height:38vw;left:30vw;bottom:-14vw;
  background:radial-gradient(circle,#6366f1,transparent 62%);animation:float3 30s ease-in-out infinite}
.aurora__grid{position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 78%);}
.aurora__noise{position:absolute;inset:0;opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");}
@keyframes float1{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(4vw,3vw) scale(1.08)}}
@keyframes float2{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-3vw,4vw) scale(1.12)}}
@keyframes float3{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(2vw,-3vw) scale(1.06)}}

/* ---------- Glass primitive ---------- */
.glass{
  background:var(--card);
  border:1px solid var(--card-brd);
  border-radius:var(--radius);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow);
}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:.5rem;font-weight:600;font-size:.95rem;
  padding:.8rem 1.4rem;border-radius:999px;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease}
.btn--sm{padding:.5rem .95rem;font-size:.85rem}
.btn--primary{background:var(--grad);color:#0a0a16;box-shadow:0 10px 30px -8px rgba(99,102,241,.6)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -8px rgba(34,211,238,.55)}
.btn--ghost{background:rgba(255,255,255,.04);border-color:var(--card-brd);color:var(--text)}
.btn--ghost:hover{border-color:var(--card-hi);transform:translateY(-2px);background:rgba(255,255,255,.08)}

.link{position:relative;color:var(--text);font-weight:500;font-size:.92rem;opacity:.9;transition:opacity .2s,color .2s}
.link:hover{opacity:1;color:#c7d2fe}

/* ---------- Nav ---------- */
.nav{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  max-width:var(--maxw);margin:0 auto;padding:1rem 1.5rem;
  }
.nav::before{content:"";position:absolute;inset:0;z-index:-1;
  background:rgba(7,9,18,.55);backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.06);
  opacity:0;transition:opacity .3s}
.nav.is-scrolled::before{opacity:1}
.nav__brand{display:flex;align-items:center;gap:.6rem;font-weight:700}
.nav__logo{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;
  background:var(--grad);color:#0a0a16;font-size:.85rem;font-weight:800}
.nav__name{font-size:.98rem}
.nav__links{display:flex;align-items:center;gap:1.6rem}
.nav__links a{font-size:.92rem;color:var(--muted);transition:color .2s}
.nav__links a:hover{color:var(--text)}
.nav__links .btn{color:#0a0a16}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav__toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.3s}
.nav__toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav__toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Layout ---------- */
.section{max-width:var(--maxw);margin:0 auto;padding:5.5rem 1.5rem}
.section__head{max-width:640px;margin-bottom:2.4rem}
.section__head h2{font-size:clamp(1.9rem,4vw,2.8rem);margin-top:.4rem}
.section__sub{color:var(--muted);margin-top:.7rem;font-size:1.02rem}
.kicker{display:inline-block;font-family:"JetBrains Mono",monospace;font-size:.78rem;
  letter-spacing:.12em;text-transform:uppercase;color:var(--cyan);
  padding:.25rem .6rem;border:1px solid rgba(34,211,238,.3);border-radius:999px;
  background:rgba(34,211,238,.06)}

/* ---------- Hero ---------- */
.hero{max-width:var(--maxw);margin:0 auto;padding:5rem 1.5rem 3rem;min-height:82vh;display:flex;align-items:center}
.hero__inner{max-width:820px}
.hero__eyebrow{display:inline-flex;align-items:center;gap:.55rem;font-size:.86rem;color:var(--muted);
  font-family:"JetBrains Mono",monospace;border:1px solid var(--card-brd);border-radius:999px;
  padding:.4rem .9rem;background:rgba(255,255,255,.03)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--emerald);
  box-shadow:0 0 0 0 rgba(52,211,153,.6);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(52,211,153,.55)}70%{box-shadow:0 0 0 10px rgba(52,211,153,0)}100%{box-shadow:0 0 0 0 rgba(52,211,153,0)}}
.hero__title{font-size:clamp(2.6rem,7vw,5rem);margin:1.4rem 0 .8rem;letter-spacing:-.03em}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero__role{font-size:clamp(1.1rem,2.4vw,1.5rem);color:var(--text);font-weight:600}
.hero__role strong{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero__lead{color:var(--muted);font-size:1.08rem;max-width:600px;margin:1.1rem 0 2rem}
.hero__cta{display:flex;gap:.9rem;flex-wrap:wrap}
.hero__stats{list-style:none;display:flex;gap:2.4rem;margin-top:3rem;flex-wrap:wrap}
.hero__stats li{display:flex;flex-direction:column}
.stat__num{font-size:2rem;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat__label{font-size:.85rem;color:var(--muted)}

/* ---------- About ---------- */
.about{display:grid;grid-template-columns:1.7fr 1fr;gap:1.4rem}
.about__card{padding:2rem}
.about__card p{color:var(--muted);margin-bottom:1rem}
.about__card strong{color:var(--text)}
.about__note{padding:1rem 1.1rem;border-left:2px solid var(--cyan);
  background:var(--grad-soft);border-radius:0 12px 12px 0;color:var(--text)!important}
.about__side{padding:1.8rem}
.about__side h3{font-size:1.05rem;margin-bottom:1rem}
.tag-list{list-style:none;display:flex;flex-direction:column;gap:.55rem}
.tag-list li{font-size:.92rem;color:var(--muted);padding-left:1.2rem;position:relative}
.tag-list li::before{content:"▹";position:absolute;left:0;color:var(--cyan)}

/* ---------- Stack ---------- */
.stack{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem}
.stack__col{padding:1.8rem}
.stack__col-head{margin-bottom:1.3rem}
.stack__col-head p{color:var(--muted);font-size:.9rem;margin-top:.5rem}
.chip{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.04em;
  padding:.35rem .8rem;border-radius:999px;text-transform:uppercase}
.chip--analyst{background:rgba(52,211,153,.14);color:#6ee7b7;border:1px solid rgba(52,211,153,.3)}
.chip--eng{background:rgba(139,92,246,.16);color:#c4b5fd;border:1px solid rgba(139,92,246,.34)}
.skills{list-style:none;display:grid;gap:.7rem}
.skills li{display:flex;flex-direction:column;padding:.7rem .9rem;border-radius:12px;
  background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.05);transition:.2s}
.skills li:hover{background:rgba(255,255,255,.06);border-color:var(--card-hi);transform:translateX(4px)}
.skills li span{font-weight:600}
.skills li small{color:var(--muted);font-size:.8rem}

/* ---------- Filters ---------- */
.filters{display:flex;gap:.6rem;margin-bottom:1.8rem;flex-wrap:wrap}
.filter{font-family:inherit;font-size:.9rem;font-weight:600;color:var(--muted);cursor:pointer;
  padding:.55rem 1.1rem;border-radius:999px;background:rgba(255,255,255,.03);
  border:1px solid var(--card-brd);transition:.2s}
.filter:hover{color:var(--text);border-color:var(--card-hi)}
.filter.is-active{color:#0a0a16;background:var(--grad);border-color:transparent}

/* ---------- Project grid ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:1.4rem}
.card{padding:1.7rem;display:flex;flex-direction:column;gap:1rem;position:relative;overflow:hidden;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
.card::after{content:"";position:absolute;inset:0;border-radius:var(--radius);pointer-events:none;
  background:radial-gradient(500px circle at var(--mx,50%) var(--my,0%),rgba(139,92,246,.14),transparent 40%);
  opacity:0;transition:opacity .3s}
.card:hover{transform:translateY(-6px);border-color:var(--card-hi)}
.card:hover::after{opacity:1}
.card.is-hidden{display:none}
.card__top{display:flex;align-items:center;justify-content:space-between;gap:.6rem}
.card__badge{font-family:"JetBrains Mono",monospace;font-size:.72rem;color:#fde68a;
  background:rgba(251,191,36,.12);border:1px solid rgba(251,191,36,.3);padding:.25rem .6rem;border-radius:999px}
.card__badge--muted{color:var(--muted);background:rgba(255,255,255,.04);border-color:var(--card-brd)}
.card__tracks{display:flex;gap:.4rem}
.pill{font-size:.68rem;font-weight:700;padding:.2rem .55rem;border-radius:999px;letter-spacing:.03em}
.pill--analyst{background:rgba(52,211,153,.14);color:#6ee7b7}
.pill--eng{background:rgba(139,92,246,.16);color:#c4b5fd}
.card h3{font-size:1.25rem}
.card__desc{color:var(--muted);font-size:.94rem}
.card__views{display:grid;gap:.8rem;padding:.9rem 0;border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06)}
.card__views h4{font-size:.74rem;text-transform:uppercase;letter-spacing:.08em;color:var(--cyan);margin-bottom:.2rem}
.card__views p{font-size:.86rem;color:var(--muted)}
.tech{list-style:none;display:flex;flex-wrap:wrap;gap:.4rem}
.tech li{font-family:"JetBrains Mono",monospace;font-size:.72rem;color:var(--muted);
  padding:.22rem .55rem;border-radius:7px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06)}
.card__links{display:flex;gap:1.1rem;margin-top:auto;padding-top:.4rem}

/* ---------- Flow / arquitectura ---------- */
.flow{display:flex;align-items:stretch;gap:.5rem;padding:1.8rem;overflow-x:auto}
.flow__step{flex:1;min-width:140px;display:flex;flex-direction:column;gap:.15rem;
  padding:1rem;border-radius:14px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);
  font-weight:600;font-size:.95rem}
.flow__step span{font-family:"JetBrains Mono",monospace;font-size:.72rem;color:var(--cyan)}
.flow__step small{color:var(--muted);font-weight:400;font-size:.78rem}
.flow__step--end{background:var(--grad-soft);border-color:rgba(139,92,246,.3)}
.flow__arrow{display:grid;place-items:center;color:var(--muted);font-size:1.2rem;flex:0 0 auto}

/* ---------- Contact ---------- */
.section--contact{padding-top:2rem}
.contact{padding:3rem 2rem;text-align:center;max-width:760px;margin:0 auto}
.contact h2{font-size:clamp(2rem,5vw,3rem);margin:.5rem 0}
.contact p{color:var(--muted);max-width:520px;margin:0 auto 1.8rem}
.contact__actions{display:flex;flex-direction:column;align-items:center;gap:1.1rem}
.contact__social{display:flex;gap:1.6rem}

/* ---------- Footer ---------- */
.footer{max-width:var(--maxw);margin:0 auto;padding:2.5rem 1.5rem;
  display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.06);color:var(--muted);font-size:.88rem}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:860px){
  .about,.stack{grid-template-columns:1fr}
  .nav__toggle{display:flex}
  .nav__links{position:fixed;inset:0 0 auto 0;top:0;flex-direction:column;gap:1.2rem;
    padding:6rem 2rem 2rem;background:rgba(9,11,22,.96);backdrop-filter:blur(14px);
    transform:translateY(-100%);transition:transform .35s ease;height:100vh;align-items:flex-start}
  .nav__links.is-open{transform:none}
  .nav__links a{font-size:1.2rem}
  .flow{flex-direction:column}
  .flow__arrow{transform:rotate(90deg)}
}
@media (prefers-reduced-motion:reduce){
  .aurora__blob{animation:none}
  .reveal{opacity:1;transform:none;transition:none}
  *{scroll-behavior:auto}
}