/* Portfolio minimalista en HTML, CSS y JavaScript vanilla */
:root {
  --bg: #070a12;
  --panel: rgba(255, 255, 255, .055);
  --panel-hover: rgba(255, 255, 255, .09);
  --text: #f4f7fb;
  --muted: #a7b0c2;
  --line: rgba(255, 255, 255, .12);
  --accent: #7dd3fc;
  --accent-2: #38bdf8;
  --accent-soft: rgba(125, 211, 252, .12);
  --shadow: 0 24px 70px rgba(0, 0, 0, .35);
  --radius: 28px;
  --container: 1120px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  line-height: 1.6;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, .16), transparent 32rem),
    radial-gradient(circle at 80% 15%, rgba(99, 102, 241, .13), transparent 25rem),
    var(--bg);
}
body.nav-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
pre { overflow-x: auto; color: #dce9f7; font-size: clamp(.82rem, 2vw, 1rem); }

.container { width: min(100% - 2rem, var(--container)); margin-inline: auto; }
.section { padding: 7rem 0; }

.header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 10;
  border-bottom: 1px solid transparent;
  transition: .25s ease;
}
.header.scrolled {
  background: rgba(7, 10, 18, .78);
  border-color: var(--line);
  backdrop-filter: blur(18px);
}

.nav, .brand, .menu, .actions, .footer-inner { display: flex; align-items: center; }
.nav { height: 76px; justify-content: space-between; }
.brand { gap: .75rem; font-weight: 700; letter-spacing: -.03em; }
.brand span {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--accent);
  background: linear-gradient(135deg, var(--accent-soft), rgba(255, 255, 255, .04));
  font-size: .85rem;
}
.menu { gap: 2rem; color: var(--muted); font-size: .95rem; }
.menu a:hover { color: var(--text); }

.menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  cursor: pointer;
}
.menu-btn span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--text);
  transition: .25s ease;
}
.menu-btn.active span:first-child { transform: translateY(6px) rotate(45deg); }
.menu-btn.active span:nth-child(2) { opacity: 0; }
.menu-btn.active span:last-child { transform: translateY(-6px) rotate(-45deg); }

.hero { min-height: 100vh; display: flex; align-items: center; padding-top: 8rem; }
.hero-grid, .about-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 4rem; align-items: center; }
h1, h2, h3 { line-height: 1.08; letter-spacing: -.055em; }
h1 { font-size: clamp(3.4rem, 9vw, 6.9rem); }
.hero h2 { margin-top: .8rem; color: var(--muted); font-size: clamp(1.65rem, 4vw, 2.8rem); }
.lead { max-width: 650px; margin-top: 1.2rem; color: var(--muted); font-size: 1.12rem; }
.accent, .tech, .eyebrow { color: var(--accent); font-weight: 700; }
.accent { margin-top: 1.4rem; }
.eyebrow { margin-bottom: 1rem; font-size: .78rem; text-transform: uppercase; letter-spacing: .16em; }

.actions { flex-wrap: wrap; gap: .85rem; margin-top: 2.2rem; }
.actions.small { margin-top: 1.35rem; }
.actions.center { justify-content: center; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 1.2rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .035);
  font-weight: 700;
  font-size: .94rem;
  transition: .22s ease;
}
.btn:hover, .project:hover, .stack span:hover { transform: translateY(-5px); border-color: rgba(125, 211, 252, .42); background: var(--accent-soft); }
.btn.primary { color: #03111c; border: 0; background: linear-gradient(135deg, var(--accent), var(--accent-2)); }
.actions.small .btn { min-height: 40px; padding-inline: 1rem; font-size: .86rem; }

.code-card, .card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--panel), rgba(255, 255, 255, .028));
  box-shadow: var(--shadow);
}
.code-card { position: relative; padding: 1.3rem; background: rgba(13, 18, 32, .88); }
.code-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  z-index: -1;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(125, 211, 252, .35), transparent 45%, rgba(99, 102, 241, .22));
  filter: blur(2px);
}
.dots { display: flex; gap: .45rem; margin-bottom: 1.2rem; }
.dots span { width: 10px; height: 10px; border-radius: 50%; background: rgba(255, 255, 255, .24); }

.section-title { max-width: 690px; margin-bottom: 3rem; }
.section-title h2, .contact h2 { font-size: clamp(2rem, 5vw, 3.4rem); }
.section-title p:not(.eyebrow), .contact p, .card-body p, .text-card p { color: var(--muted); }
.section-title p:not(.eyebrow), .contact p { margin-top: 1rem; }

.projects { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.project { overflow: hidden; transition: .25s ease; }
.project:hover { border-color: rgba(125, 211, 252, .34); background: linear-gradient(180deg, var(--panel-hover), rgba(255, 255, 255, .035)); }
.project-img {
  min-height: 210px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .03);
  overflow: hidden;
}

.project-img img {
  display: block;
  width: 100%;
  height: 210px;
  object-fit: cover;
  object-position: center;
}

.card-body { padding: 1.45rem; }
.card-body h3 { min-height: 3.1rem; font-size: 1.15rem; }
.tech { margin: .9rem 0; font-size: .9rem; }

.about { background: linear-gradient(180deg, transparent, rgba(255, 255, 255, .025), transparent); }
.about-grid { grid-template-columns: .75fr 1.25fr; align-items: start; }
.text-card { padding: clamp(1.5rem, 4vw, 2.4rem); }
.text-card p + p { margin-top: 1.1rem; }

.stack { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.stack span {
  min-height: 84px;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, .04);
  color: var(--text);
  font-weight: 700;
  transition: .22s ease;
}
.stack span::first-letter { color: var(--accent); }

.contact { max-width: 860px; padding: clamp(2rem, 6vw, 4rem); text-align: center; }
.footer { padding: 2rem 0; border-top: 1px solid var(--line); color: var(--muted); }
.footer-inner { justify-content: space-between; gap: 1rem; font-size: .9rem; }
.footer a { color: var(--text); }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .65s ease, transform .65s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 920px) {
  .hero-grid, .about-grid, .projects { grid-template-columns: 1fr; }
  .code-card { max-width: 620px; }
  .stack { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .section { padding: 5rem 0; }
  .hero { min-height: auto; padding-top: 9rem; }
  .brand { font-size: 0; }
  .menu-btn { display: block; }
  .menu {
    position: fixed;
    top: 76px;
    left: 1rem;
    right: 1rem;
    display: grid;
    gap: 0;
    padding: .8rem;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: rgba(13, 18, 32, .96);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-16px);
    transition: .25s ease;
  }
  .menu.open { opacity: 1; pointer-events: auto; transform: none; }
  .menu a { display: block; padding: .9rem 1rem; border-radius: 14px; }
  .menu a:hover { background: rgba(255, 255, 255, .05); }
  .actions, .footer-inner { flex-direction: column; }
  .btn { width: 100%; }
  .stack { grid-template-columns: 1fr; }
}