/* Bitacad — web de producto. Paleta 3D SUR: grafito #1d1f22 · azul noche #0d1522 · azul #2f6fb0 · celeste #74b6e6 · blanco hueso #f4f4f2 */
:root {
  --graphite: #1d1f22;
  --night: #0d1522;
  --night-2: #131d2e;
  --blue: #2f6fb0;
  --blue-d: #255a91;
  --sky: #74b6e6;
  --bone: #f4f4f2;
  --ink: #1d1f22;
  --muted: #5f6873;
  --line: #e2e4e7;
  --card: #ffffff;
  --ok: #22a06b;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(13, 21, 34, .06), 0 8px 24px rgba(13, 21, 34, .08);
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bone);
  color: var(--ink);
  font: 16px/1.6 "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); }
h1, h2, h3 { line-height: 1.15; margin: 0; letter-spacing: -.01em; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.section { padding: 84px 0; }
.section.alt { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.eyebrow { color: var(--blue); font-weight: 700; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 10px; }
.section h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 14px; }
.lead { font-size: 18px; color: var(--muted); max-width: 680px; }
.center { text-align: center; }
.center .lead { margin-left: auto; margin-right: auto; }

/* ---------- botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--blue); color: #fff; text-decoration: none; font-weight: 600;
  padding: 13px 22px; border-radius: 8px; border: 2px solid var(--blue); transition: background .15s, transform .15s;
  cursor: pointer; font-size: 16px; line-height: 1.2;
}
.btn:hover { background: var(--blue-d); border-color: var(--blue-d); transform: translateY(-1px); }
.btn.ghost { background: transparent; color: var(--blue); }
.btn.ghost:hover { background: rgba(47, 111, 176, .08); }
.btn.light { background: transparent; color: var(--bone); border-color: rgba(244, 244, 242, .45); }
.btn.light:hover { background: rgba(255, 255, 255, .08); }
.btn.block { width: 100%; }
.btn.small { padding: 9px 14px; font-size: 14px; }

/* ---------- barra superior ---------- */
.nav { position: sticky; top: 0; z-index: 20; background: rgba(13, 21, 34, .92); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(116, 182, 230, .15); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--bone); text-decoration: none; font-weight: 800; letter-spacing: .08em; }
.brand svg { width: 32px; height: 32px; }
.brand small { display: block; font-weight: 400; letter-spacing: .04em; color: var(--sky); font-size: 11px; text-transform: none; }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a { color: #c9d3df; text-decoration: none; font-size: 15px; }
.nav-links a:hover { color: #fff; }
.nav-links .btn { color: #fff; }
.lang { display: flex; gap: 4px; font-size: 13px; }
.lang a { padding: 3px 7px; border-radius: 5px; color: #9fb0c3; }
.lang a.on { background: rgba(116, 182, 230, .18); color: #fff; }
@media (max-width: 860px) { .nav-links .hide-m { display: none; } }

/* ---------- portada ---------- */
.hero { background: radial-gradient(1200px 500px at 80% -10%, rgba(47, 111, 176, .45), transparent 60%), var(--night); color: var(--bone); padding: 80px 0 0; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(36px, 5.2vw, 58px); font-weight: 800; }
.hero h1 span { color: var(--sky); }
.hero .lead { color: #b8c5d4; font-size: 19px; margin: 20px 0 30px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-tags { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 26px; color: #9fb0c3; font-size: 14px; }
.hero-tags span::before { content: "✓ "; color: var(--sky); font-weight: 700; }
.hero-shot { align-self: end; }
.hero-shot img { border-radius: 12px 12px 0 0; box-shadow: 0 -10px 60px rgba(0, 0, 0, .45); border: 1px solid rgba(116, 182, 230, .25); border-bottom: 0; }
.stripes { position: absolute; }
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 56px; }
}

/* ---------- pasos ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 44px; }
.step { background: var(--card); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.step .n { width: 40px; height: 40px; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 800; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.step h3 { font-size: 20px; margin-bottom: 8px; }
.step p { color: var(--muted); margin: 0; }

/* ---------- funciones ---------- */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px; }
.feature { padding: 26px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--bone); }
.feature .ico { font-size: 26px; margin-bottom: 10px; }
.feature h3 { font-size: 18px; margin-bottom: 6px; }
.feature p { color: var(--muted); margin: 0; font-size: 15px; }

/* ---------- capturas ---------- */
.gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 44px; align-items: start; }
.gallery figure { margin: 0; }
.gallery img { border-radius: 10px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.gallery figcaption { color: var(--muted); font-size: 14px; margin-top: 10px; text-align: center; }

/* ---------- versiones ---------- */
.versions { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 44px; }
.version { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; display: flex; flex-direction: column; }
.version .top { padding: 22px 26px; color: #fff; }
.version.fusion .top { background: linear-gradient(135deg, #e8611a, #c24d10); }
.version.sw .top { background: linear-gradient(135deg, #c8262f, #9c1b23); }
.version .top h3 { font-size: 22px; }
.version .top p { margin: 4px 0 0; opacity: .9; font-size: 15px; }
.version .body { padding: 22px 26px 26px; flex: 1; display: flex; flex-direction: column; }
.version ul { padding-left: 20px; margin: 0 0 16px; color: #3c444d; }
.version li { margin-bottom: 6px; }
.version .note { background: #eef5fb; border-left: 4px solid var(--blue); padding: 10px 14px; border-radius: 6px; font-size: 14px; margin-bottom: 18px; }
.version .req { color: var(--muted); font-size: 13.5px; margin-top: auto; padding-top: 12px; }
.dl { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- precios ---------- */
.pricing { display: grid; grid-template-columns: repeat(2, minmax(0, 360px)); gap: 24px; justify-content: center; margin-top: 44px; }
.plan { background: var(--card); border-radius: 16px; padding: 30px; box-shadow: var(--shadow); border: 2px solid transparent; position: relative; display: flex; flex-direction: column; }
.plan.best { border-color: var(--blue); }
.plan .badge { position: absolute; top: -13px; left: 50%; transform: translateX(-50%); background: var(--blue); color: #fff; font-size: 13px; font-weight: 700; padding: 4px 14px; border-radius: 20px; white-space: nowrap; }
.plan h3 { font-size: 20px; }
.plan .price { font-size: 48px; font-weight: 800; margin: 14px 0 0; letter-spacing: -.02em; }
.plan .price small { font-size: 17px; font-weight: 500; color: var(--muted); letter-spacing: 0; }
.plan .sub { color: var(--muted); font-size: 14.5px; min-height: 44px; }
.plan .save { color: var(--ok); font-weight: 700; }
.plan ul { list-style: none; padding: 0; margin: 18px 0 24px; flex: 1; }
.plan li { padding: 6px 0 6px 26px; position: relative; font-size: 15px; }
.plan li::before { content: "✓"; position: absolute; left: 0; color: var(--blue); font-weight: 800; }
.price-note { text-align: center; color: var(--muted); font-size: 14px; margin-top: 22px; }

/* ---------- preguntas ---------- */
.faq { max-width: 780px; margin: 40px auto 0; }
.faq details { background: var(--card); border-radius: 10px; margin-bottom: 10px; box-shadow: 0 1px 2px rgba(13, 21, 34, .06); border: 1px solid var(--line); }
.faq summary { cursor: pointer; padding: 18px 22px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::after { content: "+"; color: var(--blue); font-size: 22px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { padding: 0 22px 18px; margin: 0; color: #3c444d; }

/* ---------- cierre ---------- */
.cta-final { background: var(--night); color: var(--bone); text-align: center; padding: 80px 0; }
.cta-final h2 { font-size: clamp(28px, 4vw, 40px); }
.cta-final p { color: #b8c5d4; font-size: 18px; margin: 14px 0 28px; }

/* ---------- pie ---------- */
footer { background: #080d16; color: #9fb0c3; padding: 44px 0 30px; font-size: 14px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 30px; }
footer a { color: #c9d3df; text-decoration: none; }
footer a:hover { color: #fff; }
footer h4 { color: #fff; margin: 0 0 10px; font-size: 14px; letter-spacing: .06em; text-transform: uppercase; }
footer ul { list-style: none; padding: 0; margin: 0; }
footer li { margin-bottom: 6px; }
.foot-bottom { border-top: 1px solid #1c2638; margin-top: 30px; padding-top: 20px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; }
.credits b { color: #fff; }

/* ---------- páginas legales ---------- */
.legal { max-width: 780px; margin: 0 auto; padding: 56px 20px 80px; }
.legal h1 { font-size: 36px; margin-bottom: 8px; }
.legal .updated { color: var(--muted); margin-bottom: 30px; }
.legal h2 { font-size: 21px; margin: 32px 0 10px; }
.legal p, .legal li { color: #2f363d; }
.legal ul { padding-left: 22px; }

@media (max-width: 860px) {
  .steps, .features, .gallery, .versions, .foot-grid { grid-template-columns: 1fr; }
  .pricing { grid-template-columns: minmax(0, 420px); }
  .section { padding: 64px 0; }
}

@media (max-width: 480px) {
  .nav .brand small { display: none; }
  .nav-links { gap: 10px; }
}