/* ===== Tokens (design system Levels) ===== */
:root {
  --lv-surface: #FFFFFF;
  --lv-primary: #27272A;
  --lv-secondary: #8B5CF6;
  --lv-text: #111827;
  --lv-muted: #6b7280;
  --lv-border: #E5E7EB;

  --grid-soft: rgba(39, 39, 42, 0.06);
  --grid-line: rgba(39, 39, 42, 0.45);
  --grid-fine: rgba(139, 92, 246, 0.05);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; }
body, h1, h2, h3, p, ul, ol, figure { margin: 0; padding: 0; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--lv-text);
  background: var(--lv-surface);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--lv-secondary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

/* ===== Nav ===== */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 16px 24px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--lv-border);
}
.site-nav .brand {
  font-weight: 800; font-size: 20px; letter-spacing: -0.02em;
  color: var(--lv-text);
}
.site-nav .brand:hover { text-decoration: none; }
.nav-links { display: flex; gap: 20px; flex-wrap: wrap; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--lv-muted); }
.nav-links a:hover { color: var(--lv-secondary); text-decoration: none; }
.nav-links a[aria-current="page"] { color: var(--lv-secondary); font-weight: 600; }

/* ===== Footer ===== */
.site-footer {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 32px 24px; border-top: 1px solid var(--lv-border);
  font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--lv-muted);
}

/* ===== Hero blueprint ===== */
.hero {
  position: relative; min-height: 100vh; background: var(--lv-surface);
  overflow: hidden; display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 80px 24px; color: var(--lv-text);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--grid-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-soft) 1px, transparent 1px);
  background-size: 40px 40px;
  -webkit-mask-image: linear-gradient(to bottom, black 45%, transparent 100%);
  mask-image: linear-gradient(to bottom, black 45%, transparent 100%);
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--grid-fine) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-fine) 1px, transparent 1px);
  background-size: 200px 200px;
  -webkit-mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
  mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
}
.hero-decor { position: absolute; inset: 0; transition: opacity .4s ease; }
.frame { position: absolute; inset: 24px; border: 1px solid var(--grid-line); pointer-events: none; }
.frame::before, .frame::after {
  content: ""; position: absolute; width: 26px; height: 26px;
  border: 2px solid var(--lv-secondary);
}
.frame::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.frame::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

.hero-inner { position: relative; z-index: 2; max-width: 860px; transition: opacity .5s ease, transform .5s ease; }
.kicker {
  font-family: 'JetBrains Mono', monospace; font-size: 12px; letter-spacing: 4px;
  color: var(--lv-secondary); text-transform: uppercase; margin-bottom: 24px; font-weight: 700;
}
.kicker .dot { color: var(--lv-muted); margin: 0 8px; }
.hero h1 {
  font-size: clamp(40px, 9vw, 96px); font-weight: 800; letter-spacing: -0.02em;
  color: var(--lv-text); line-height: 1; margin-bottom: 20px;
}
.tagline { font-size: clamp(15px, 2.4vw, 20px); color: var(--lv-muted); max-width: 620px; margin: 0 auto 16px; }
.emphasis {
  display: inline-block; margin-top: 8px;
  font-family: 'JetBrains Mono', monospace; font-size: 13px; letter-spacing: 1px;
  color: var(--lv-text); background: rgba(139, 92, 246, 0.10);
  border: 1px solid var(--lv-secondary); padding: 8px 16px; border-radius: 8px;
}
.cta-row { margin-top: 36px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta {
  font-family: 'JetBrains Mono', monospace; font-size: 13px; letter-spacing: 1px;
  padding: 14px 28px; border-radius: 10px; text-decoration: none; transition: all .15s;
}
.cta.primary { background: var(--lv-primary); color: #fff; font-weight: 700; box-shadow: 0 6px 16px rgba(39, 39, 42, 0.25); }
.cta.primary:hover { background: var(--lv-secondary); text-decoration: none; }
.cta.ghost { color: var(--lv-text); background: #fff; border: 1px solid var(--lv-border); }
.cta.ghost:hover { border-color: var(--lv-text); text-decoration: none; }

.annot {
  position: absolute; font-family: 'JetBrains Mono', monospace; font-size: 11px;
  color: var(--lv-muted); letter-spacing: 1px; z-index: 1; line-height: 1.6;
  transition: opacity .4s ease;
}
.annot.a1 { top: 70px; left: 40px; }
.annot.a2 { bottom: 70px; right: 40px; text-align: right; }
.annot .measure { color: var(--lv-secondary); }
.cross { color: var(--lv-secondary); font-weight: 700; }

.scroll-hint {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 2px;
  color: var(--lv-muted); z-index: 2; animation: bob 2s infinite; transition: opacity .4s ease;
}
@keyframes bob {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 6px); }
}

/* ===== Built section (servicios) ===== */
.built { background: var(--lv-surface); color: var(--lv-text); padding: 120px 24px 90px; }
.built .inner { max-width: 1040px; margin: 0 auto; }
.built .eyebrow {
  display: inline-block; font-family: 'JetBrains Mono', monospace; font-size: 12px;
  letter-spacing: 2px; text-transform: uppercase; color: var(--lv-secondary);
  margin-bottom: 12px; font-weight: 700;
  opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease;
}
.built h2 {
  font-size: clamp(27px, 4.5vw, 40px); font-weight: 800; color: var(--lv-text);
  margin-bottom: 8px; letter-spacing: -0.02em;
  opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease;
}
.built .sub {
  color: var(--lv-muted); font-size: 15px; margin-bottom: 40px;
  opacity: 0; transform: translateY(16px); transition: opacity .6s ease .08s, transform .6s ease .08s;
}
.built.reveal .eyebrow, .built.reveal h2, .built.reveal .sub { opacity: 1; transform: translateY(0); }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 20px; }
.card {
  background: #fff; border: 1px solid var(--lv-border); border-radius: 16px;
  padding: 28px 24px; box-shadow: 0 1px 2px rgba(17, 24, 39, 0.05);
  opacity: 0; transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease, box-shadow .2s ease;
}
.card.visible { opacity: 1; transform: translateY(0); }
.card.visible:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(17, 24, 39, 0.10); }
.card .icon {
  width: 46px; height: 46px; display: flex; align-items: center; justify-content: center;
  font-size: 20px; color: #fff; margin-bottom: 16px;
  background: var(--lv-secondary); border-radius: 12px;
}
.card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; color: var(--lv-text); }
.card p { font-size: 14px; color: var(--lv-muted); line-height: 1.6; }
.card.featured { background: var(--lv-primary); border-color: var(--lv-primary); }
.card.featured h3 { color: #fff; }
.card.featured p { color: rgba(255, 255, 255, 0.75); }
.card.featured .icon { background: #fff; color: var(--lv-primary); }

/* ===== CTA final (markdown del index) ===== */
.closing { max-width: 760px; margin: 0 auto; padding: 40px 24px 96px; text-align: center; }
.closing h2 { font-size: clamp(24px, 4vw, 32px); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 12px; }
.closing p { color: var(--lv-muted); margin-bottom: 24px; }
.closing .btn {
  display: inline-block; font-family: 'JetBrains Mono', monospace; font-size: 13px; letter-spacing: 1px;
  padding: 14px 28px; border-radius: 10px; background: var(--lv-primary); color: #fff; font-weight: 700;
  box-shadow: 0 6px 16px rgba(39, 39, 42, 0.25); transition: all .15s;
}
.closing .btn:hover { background: var(--lv-secondary); text-decoration: none; }

/* ===== Página interna ===== */
.page { max-width: 760px; margin: 0 auto; padding: 64px 24px 96px; }
.page h1 { font-size: clamp(32px, 5vw, 48px); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 24px; }
.page h2 { font-size: 24px; font-weight: 700; margin: 40px 0 12px; letter-spacing: -0.01em; }
.page h3 { font-size: 18px; font-weight: 700; margin: 28px 0 8px; }
.page p { margin-bottom: 16px; color: var(--lv-text); }
.page ul { margin: 0 0 16px 24px; }
.page li { margin-bottom: 6px; }
.page strong { font-weight: 700; }

@media (max-width: 640px) {
  .annot { display: none; }
  .site-nav { flex-direction: column; align-items: flex-start; }
}