:root{
  --bg:#0a0a0f;
  --bg-soft:#101019;
  --surface:#13131f;
  --surface-hover:#181826;
  --border:rgba(255,255,255,.08);
  --border-hover:rgba(167,139,250,.35);
  --text:#ece9f5;
  --text-dim:#9a96ad;
  --text-faint:#6a6680;
  --accent:#a78bfa;
  --accent-soft:#7c3aed;
  --accent-glow:rgba(167,139,250,.15);
  --font-display:"Bricolage Grotesque",sans-serif;
  --font-body:"Manrope",sans-serif;
  --font-mono:"JetBrains Mono",monospace;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}

body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

::selection{background:var(--accent);color:#0a0a0f}

/* ---- fondo grid animado ---- */
.bg-grid{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(167,139,250,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(167,139,250,.04) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 40%,transparent 100%);
  animation:gridDrift 24s linear infinite;
}
@keyframes gridDrift{from{background-position:0 0}to{background-position:48px 48px}}

.bg-glow{
  position:fixed;top:-15%;left:50%;transform:translateX(-50%);
  width:70vw;height:50vh;z-index:0;pointer-events:none;
  background:radial-gradient(ellipse at center,var(--accent-glow),transparent 70%);
  filter:blur(40px);
}

.particle{position:fixed;width:3px;height:3px;border-radius:50%;background:var(--accent);opacity:.0;z-index:0;pointer-events:none;animation:floatUp linear infinite}
@keyframes floatUp{0%{opacity:0;transform:translateY(0)}10%{opacity:.5}90%{opacity:.3}100%{opacity:0;transform:translateY(-100vh)}}

/* ---- layout general ---- */
.wrap{max-width:920px;margin:0 auto;padding:0 24px;position:relative;z-index:2}

nav{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(12px);
  background:rgba(10,10,15,.7);
  border-bottom:1px solid var(--border);
}

.nav-inner{max-width:920px;margin:0 auto;padding:12px 24px;display:flex;justify-content:space-between;align-items:center}

.logo{
  display:flex;align-items:center;justify-content:center;
  width:40px;height:40px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:10px;
  text-decoration:none;
  font-family:var(--font-mono);font-weight:600;font-size:18px;
  transition:border-color .3s, transform .3s, box-shadow .3s;
}
.logo:hover{
  border-color:var(--border-hover);
  transform:translateY(-2px);
  box-shadow:0 8px 20px -8px var(--accent-glow);
}
.logo .f{color:var(--text)}
.logo .s{color:var(--accent)}

.nav-links{display:flex;gap:12px}
.nav-links a{
  color:var(--text-dim);
  text-decoration:none;
  font-size:13px;
  font-family:var(--font-mono);
  padding: 8px 14px;
  border-radius: 8px;
  transition:background .25s, color .25s;
}
.nav-links a:hover{
  background:var(--accent-glow);
  color:var(--accent);
}
@media(max-width:640px){.nav-links{display:none}}

/* ---- hero principal ---- */
.hero{padding:100px 0 80px;position:relative}
.hero h1{font-family:var(--font-display);font-size:clamp(48px,9vw,82px);font-weight:600;line-height:.98;letter-spacing:-2px;margin-bottom:20px}
.hero h1 .accent{color:var(--accent)}
.typed-line{font-family:var(--font-mono);font-size:clamp(15px,2.4vw,19px);color:var(--text-dim);margin-bottom:26px;min-height:1.6em}
.typed-line .prompt{color:var(--accent)}
.cursor{display:inline-block;width:9px;height:1.05em;background:var(--accent);margin-left:3px;vertical-align:text-bottom;animation:blink 1s step-end infinite}
@keyframes blink{50%{opacity:0}}
.hero p.lead{font-size:18px;color:var(--text-dim);max-width:540px;margin-bottom:34px}

.btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:9px;font-size:14px;font-weight:500;padding:13px 22px;border-radius:12px;text-decoration:none;transition:transform .2s cubic-bezier(.34,1.56,.64,1),box-shadow .25s,background .25s}
.btn svg{width:17px;height:17px}
.btn-primary{background:var(--accent);color:#0a0a0f}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 30px -8px var(--accent)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--border-hover);background:var(--surface-hover)}

/* ---- secciones ---- */
section{padding:70px 0}
h2{font-family:var(--font-display);font-size:clamp(28px,5vw,40px);font-weight:500;letter-spacing:-1px;margin-bottom:28px}

/* ---- tarjeta perfil sobre mí ---- */
.profile-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px 24px;
  position: relative;
  overflow: hidden;
}
.profile-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; height: 4px;
  background: var(--accent);
}
.profile-photo {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 3px solid var(--surface);
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  margin-bottom: 24px;
  object-fit: cover;
  background: var(--bg-soft);
}
.about-text{font-size:17px;color:var(--text-dim);max-width:680px; margin: 0 auto;}
.about-text strong{color:var(--text);font-weight:600}

/* ---- certs + stack ---- */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:40px}
@media(max-width:640px){.grid2{grid-template-columns:1fr;gap:36px}}
.cert{display:flex;align-items:center;gap:14px;padding:16px 0;border-bottom:1px solid var(--border);transition:padding-left .25s}
.cert:hover{padding-left:8px}
.cert-icon{width:40px;height:40px;flex-shrink:0;border-radius:10px;background:var(--accent-glow);display:flex;align-items:center;justify-content:center;color:var(--accent)}
.cert-icon svg{width:20px;height:20px}
.cert-name{font-weight:600;font-size:15px}
.cert-state{font-family:var(--font-mono);font-size:12px;color:var(--text-faint)}
.stack{display:flex;flex-wrap:wrap;gap:10px}
.chip{font-family:var(--font-mono);font-size:13px;color:var(--text-dim);background:var(--surface);border:1px solid var(--border);padding:8px 14px;border-radius:10px;transition:transform .2s,color .2s,border-color .2s}
.chip:hover{transform:translateY(-3px);color:var(--accent);border-color:var(--border-hover)}

/* ---- writeups (cards) ---- */
.cards{display:flex;flex-direction:column;gap:14px}
.card{
  display:block;text-decoration:none;color:inherit;
  background:var(--surface);border:1px solid var(--border);border-radius:16px;
  padding:22px 24px;position:relative;overflow:hidden;
  transition:transform .3s cubic-bezier(.22,1,.36,1),border-color .3s,background .3s;
}
.card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);transform:scaleY(0);transform-origin:top;transition:transform .3s}
.card:hover{transform:translateY(-4px);border-color:var(--border-hover);background:var(--surface-hover)}
.card:hover::before{transform:scaleY(1)}
.card-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:7px}
.card h3{font-family:var(--font-display);font-size:19px;font-weight:500;letter-spacing:-.3px}
.card p{font-size:14.5px;color:var(--text-dim)}
.tag{display:inline-block;font-family:var(--font-mono);font-size:11px;color:var(--accent);background:var(--accent-glow);padding:3px 10px;border-radius:6px;margin-top:12px;margin-right:6px}

.view-all-container { text-align: center; margin-top: 24px; }

/* ---- contacto (tarjetas interactivas) ---- */
.contact-box{text-align:center;padding:60px 24px;background:var(--surface);border:1px solid var(--border);border-radius:24px;position:relative;overflow:hidden}
.contact-box::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 50% 0%,var(--accent-glow),transparent 60%);pointer-events:none}
.contact-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-top: 36px; position: relative; }
.contact-card {
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: 16px;
  padding: 28px 20px; text-align: center; text-decoration: none; color: inherit;
  transition: transform .3s cubic-bezier(.22,1,.36,1), border-color .3s, box-shadow .3s;
  position: relative; overflow: hidden;
}
.contact-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--accent); transform: scaleX(0); transition: transform .3s cubic-bezier(.22,1,.36,1); }
.contact-card:hover { transform: translateY(-6px); border-color: var(--border-hover); background: var(--surface-hover); box-shadow: 0 12px 30px -10px var(--accent-glow); }
.contact-card:hover::before { transform: scaleX(1); }
.contact-card .icon {
  width: 52px; height: 52px; margin: 0 auto 18px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; display: flex; align-items: center; justify-content: center; color: var(--text-dim);
  transition: color .3s, border-color .3s, transform .3s;
}
.contact-card .icon svg { width: 24px; height: 24px; }
.contact-card:hover .icon { color: var(--accent); border-color: var(--border-hover); transform: scale(1.05); }
.contact-card h3 { font-family: var(--font-display); font-size: 18px; margin-bottom: 6px; font-weight: 500; }
.contact-card p { font-family: var(--font-mono); font-size: 13px; color: var(--text-dim); word-break: break-all; }

footer{padding:40px 0 60px;text-align:center;font-family:var(--font-mono);font-size:12px;color:var(--text-faint)}

/* ---- reveal al scroll ---- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .bg-grid,.particle{animation:none}
  .cursor{animation:none}
}

/* ==========================================================================
   ESTILOS ESPECÍFICOS PARA PÁGINAS SEPARADAS (WRITEUPS/PROYECTOS)
   ========================================================================== */
.page-header { 
  padding: 80px 0 40px; 
  text-align: center;
  position: relative;
}
.page-title { 
  font-family: var(--font-display); 
  font-size: clamp(40px, 8vw, 64px); 
  font-weight: 600; 
  line-height: 1.1; 
  position: relative;
  display: inline-block;
}

/* Animación exclusiva para Writeups (línea inferior con glow) */
.title-writeups::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: var(--accent);
  box-shadow: 0 0 15px var(--accent-glow);
  animation: expandLine 1s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  animation-delay: 0.2s;
}
@keyframes expandLine {
  to { width: 100%; }
}

/* Animación exclusiva para Proyectos (corchetes escalonados) */
.title-projects {
  display: inline-flex;
  align-items: center;
  gap: 15px;
}
.title-projects::before, .title-projects::after {
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 400;
  opacity: 0;
  transform: translateY(15px);
  animation: fadeSlideUp 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.title-projects::before { content: "["; animation-delay: 0.1s; }
.title-projects::after { content: "]"; animation-delay: 0.3s; }

@keyframes fadeSlideUp {
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   ESTILOS ESPECÍFICOS PARA EL INTERIOR DE LOS WRITEUPS
   ========================================================================== */
.article-header { padding: 80px 0 40px; border-bottom: 1px solid var(--border); margin-bottom: 40px; }
.article-meta { font-family: var(--font-mono); font-size: 13px; color: var(--text-faint); margin-bottom: 16px; display: flex; gap: 16px; }
.article-title { font-family: var(--font-display); font-size: clamp(32px, 6vw, 56px); font-weight: 600; line-height: 1.1; margin-bottom: 24px; }
article { max-width: 760px; margin: 0 auto 100px; }
article h2 { font-size: 28px; margin: 40px 0 20px; color: var(--text); }
article h3 { font-family: var(--font-display); font-size: 22px; margin: 30px 0 15px; color: var(--text); }
article p { font-size: 17px; color: var(--text-dim); margin-bottom: 20px; }
article strong { color: var(--text); }
article pre { background: var(--bg-soft); border: 1px solid var(--border); padding: 16px; border-radius: 12px; overflow-x: auto; margin-bottom: 24px; }
article code { font-family: var(--font-mono); font-size: 14px; color: #a78bfa; }
article p code { background: var(--bg-soft); padding: 2px 6px; border-radius: 4px; border: 1px solid var(--border); }
article img { max-width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--border); margin: 24px 0; }
article blockquote { border-left: 3px solid var(--accent); margin: 24px 0; background: var(--accent-glow); padding: 16px; border-radius: 0 12px 12px 0; color: var(--text); }