:root {
  --bg: #0b1020;
  --bg-2: #111a2f;
  --surface: #151f38;
  --surface-2: #1b2745;
  --line: #26345a;
  --text: #e8ecf4;
  --muted: #9ba6bf;
  --accent: #f5b32b;
  --accent-ink: #1a1200;
  --ok: #2dd4a0;
  --warn: #f5b32b;
  --bad: #f87171;
  --radius: 14px;
  --max: 1080px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: radial-gradient(1200px 600px at 80% -10%, #1b2a55 0%, transparent 60%), var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; font-weight: 800; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); font-weight: 600; margin-bottom: .35em; }
p { margin: 0 0 1em; }
ul, ol { margin: 0; padding-left: 1.2em; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 16px;
  background: rgba(11, 16, 32, .85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-brand { color: var(--text); font-weight: 800; }
.nav-links { display: flex; gap: 18px; align-items: center; font-size: .95rem; }
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-cta { color: var(--accent) !important; font-weight: 600; }
@media (max-width: 720px) { .nav-links a:not(.nav-cta) { display: none; } }

/* Layout */
main { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
.section { padding: 72px 0; border-top: 1px solid var(--line); }
.section-intro { color: var(--muted); max-width: 720px; margin-bottom: 32px; }

/* Hero */
.hero { padding: 88px 0 64px; }
.eyebrow { color: var(--accent); font-weight: 600; font-size: .9rem; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 14px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.4rem); max-width: 18ch; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 62ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 44px; }
.stats {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px;
}
.stats li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.stats strong { display: block; font-size: 2rem; font-weight: 800; color: var(--accent); line-height: 1; margin-bottom: 6px; }
.stats span { font-size: .88rem; color: var(--muted); }

/* Buttons */
.btn {
  display: inline-block; padding: 12px 20px; border-radius: 10px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; font-family: inherit; font-size: 1rem;
  transition: transform .1s, background .15s, border-color .15s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--muted); }
.btn-sm { padding: 8px 14px; font-size: .9rem; }

/* Cases */
.case {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; margin-bottom: 20px;
}
.case header { margin-bottom: 18px; }
.case-tag {
  display: inline-block; font-size: .75rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  color: var(--accent); border: 1px solid var(--accent); border-radius: 999px; padding: 3px 10px; margin-bottom: 10px;
}
.case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px 28px; }
.case-grid p, .case-grid ul { font-size: .97rem; color: #cfd6e4; }
.case-grid li { margin-bottom: 4px; }
.case-stack { color: var(--muted) !important; font-size: .85rem !important; margin-top: 8px; }
@media (max-width: 720px) { .case-grid { grid-template-columns: 1fr; } .case { padding: 20px; } }

/* Demo */
.demo {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
}
.demo-toolbar {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between;
  padding: 14px 18px; background: var(--surface-2); border-bottom: 1px solid var(--line);
}
.demo-toolbar-actions { display: flex; gap: 8px; }
.net-status { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.pending { color: var(--muted); font-weight: 400; font-size: .9rem; }
.dot { width: 12px; height: 12px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px rgba(45, 212, 160, .15); }
.dot.warn { background: var(--warn); box-shadow: 0 0 0 4px rgba(245, 179, 43, .18); }
.dot.bad { background: var(--bad); box-shadow: 0 0 0 4px rgba(248, 113, 113, .18); }
.demo-body { display: grid; grid-template-columns: 1.3fr 1fr; }
@media (max-width: 720px) { .demo-body { grid-template-columns: 1fr; } }

.checklist { list-style: none; padding: 8px 0; margin: 0; }
.checklist li {
  display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: center;
  padding: 12px 18px; border-bottom: 1px solid var(--line);
}
.checklist li:last-child { border-bottom: 0; }
.item-name { font-weight: 500; }
.item-state { display: block; font-size: .8rem; color: var(--muted); }
.item-state.ok { color: var(--ok); }
.item-state.pending { color: var(--warn); }
.choice { display: flex; gap: 6px; }
.choice button {
  font-family: inherit; font-size: .85rem; font-weight: 600; padding: 7px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: transparent; color: var(--text); cursor: pointer;
}
.choice button:hover { border-color: var(--muted); }
.choice button.sel-ok { background: rgba(45, 212, 160, .15); border-color: var(--ok); color: var(--ok); }
.choice button.sel-falla { background: rgba(248, 113, 113, .15); border-color: var(--bad); color: var(--bad); }

.log { border-left: 1px solid var(--line); padding: 16px 18px; background: var(--bg-2); min-height: 100%; }
.log h4 { margin-bottom: 10px; }
.log ol { list-style: none; padding: 0; font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: .8rem; color: var(--muted); }
.log li { padding: 3px 0; border-bottom: 1px dashed var(--line); }
.log li.ok { color: var(--ok); }
.log li.warn { color: var(--warn); }
.log li.bad { color: var(--bad); }
@media (max-width: 720px) { .log { border-left: 0; border-top: 1px solid var(--line); } }

/* Principles / tech */
.principles, .tech-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; }
.principles > div, .tech-grid > div { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.principles h3 { font-size: 1.05rem; }
.principles p, .tech-grid p { color: #cfd6e4; font-size: .97rem; margin: 0; }

/* Contact */
.contact-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.footer {
  max-width: var(--max); margin: 0 auto; padding: 28px 16px 40px;
  display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between;
  color: var(--muted); font-size: .85rem; border-top: 1px solid var(--line);
}

/* Capturas */
.hero-shot { display: block; margin: 0 0 28px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); box-shadow: 0 30px 60px -30px rgba(0,0,0,.8); }
.hero-shot img { display: block; width: 100%; height: auto; }
.shots { margin: 0 0 22px; }
.shot { display: block; border-radius: 10px; overflow: hidden; border: 1px solid var(--line); background: var(--bg-2); }
.shot img { display: block; width: 100%; height: auto; transition: transform .2s; }
.shot:hover img { transform: scale(1.015); }
.shot-main { margin-bottom: 10px; }
.thumbs { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.thumbs .shot { aspect-ratio: 16 / 10; }
.thumbs .shot img { height: 100%; object-fit: cover; object-position: top left; }

#lightbox { border: 0; padding: 0; background: transparent; max-width: min(96vw, 1400px); max-height: 94vh; }
#lightbox::backdrop { background: rgba(5, 8, 18, .9); }
#lightbox img { display: block; max-width: min(96vw, 1400px); max-height: 88vh; width: auto; height: auto; border-radius: 10px; border: 1px solid var(--line); }
#lightboxClose { position: absolute; top: 8px; right: 8px; font: 600 .85rem var(--font); color: var(--text); background: rgba(11,16,32,.85); border: 1px solid var(--line); border-radius: 8px; padding: 6px 12px; cursor: pointer; }

/* Marca */
.nav-brand { display: flex; align-items: center; gap: 12px; }
.nav-brand img { height: 30px; width: auto; display: block; }
.nav-brand span { border-left: 1px solid var(--line); padding-left: 12px; }
@media (max-width: 480px) { .nav-brand span { display: none; } }
.footer img { height: 34px; width: auto; display: block; opacity: .9; flex-basis: 100%; }