/* Sitio público: presentación, contacto, soporte y suscripción. Sin recursos externos (CSP estricta). */
:root {
  --bg: #ffffff; --bg-alt: #f6f7fb; --card: #ffffff; --text: #0f172a; --muted: #5b6474; --border: #e3e7ef;
  --brand: #4f46e5; --brand-2: #8b5cf6; --brand-soft: #eef2ff; --brand-text: #4338ca;
  --ok: #15803d; --ok-soft: #dcfce7; --danger: #b91c1c; --danger-soft: #fee2e2;
  --shadow: 0 1px 2px rgba(15, 23, 42, .05), 0 8px 24px rgba(15, 23, 42, .06);
  --radius: 16px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0e14; --bg-alt: #10141d; --card: #141924; --text: #f1f5f9; --muted: #9aa4b5; --border: #242c3c;
    --brand: #818cf8; --brand-2: #a78bfa; --brand-soft: #1e1b4b; --brand-text: #c7d2fe;
    --ok: #4ade80; --ok-soft: #052e16; --danger: #f87171; --danger-soft: #450a0a;
    --shadow: none;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--brand-text); }
h1, h2, h3 { letter-spacing: -.02em; line-height: 1.15; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.wrap.narrow { max-width: 760px; }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--brand) 45%, transparent); outline-offset: 2px; }

/* ---- Botones ---- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 20px; border-radius: 12px; border: 1px solid transparent; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; transition: transform .05s, background .15s, border-color .15s; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost { border-color: var(--border); color: var(--text); background: var(--card); }
.btn-ghost:hover { border-color: color-mix(in srgb, var(--brand) 45%, var(--border)); }
.btn:disabled { opacity: .6; cursor: not-allowed; }

/* ---- Barra superior ---- */
.topbar { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 85%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.topbar-in { display: flex; align-items: center; gap: 20px; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.1rem; color: var(--text); text-decoration: none; }
.brand-logo { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; background: linear-gradient(135deg, #6366f1, #8b5cf6); color: #fff; }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a { color: var(--muted); text-decoration: none; font-size: .95rem; }
.nav a:hover { color: var(--text); }

/* ---- Hero ---- */
.hero { padding: 72px 0 64px; background:
  radial-gradient(900px 420px at 10% -10%, color-mix(in srgb, var(--brand) 16%, transparent), transparent),
  radial-gradient(700px 400px at 100% 10%, color-mix(in srgb, var(--brand-2) 14%, transparent), transparent); }
.hero-in { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.eyebrow { display: inline-block; margin: 0 0 14px; padding: 4px 12px; border-radius: 999px; background: var(--brand-soft); color: var(--brand-text); font-size: .82rem; font-weight: 600; }
.hero h1 { margin: 0 0 18px; font-size: clamp(2.1rem, 4.6vw, 3.4rem); }
.grad { background: linear-gradient(135deg, var(--brand), var(--brand-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { margin: 0 0 26px; font-size: 1.12rem; color: var(--muted); max-width: 560px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 26px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: .92rem; }
.hero-points li::before { content: "✓"; margin-right: 7px; color: var(--ok); font-weight: 700; }

/* Teléfono de muestra */
.phone { justify-self: center; width: min(100%, 340px); border-radius: 28px; padding: 10px; background: var(--card); border: 1px solid var(--border); box-shadow: 0 30px 60px rgba(15, 23, 42, .18); }
.phone-head { display: flex; align-items: center; gap: 10px; padding: 12px; border-radius: 20px 20px 0 0; background: linear-gradient(135deg, #4f46e5, #7c3aed); color: #fff; }
.phone-head small { display: block; opacity: .85; font-size: .78rem; }
.phone-avatar { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; background: rgba(255, 255, 255, .22); font-weight: 700; }
.phone-body { display: grid; gap: 8px; padding: 14px 10px 16px; background: var(--bg-alt); border-radius: 0 0 20px 20px; }
.bubble { max-width: 86%; margin: 0; padding: 8px 12px; border-radius: 14px; font-size: .86rem; line-height: 1.4; }
.bubble.bot { background: var(--card); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.bubble.me { justify-self: end; background: var(--brand); color: #fff; border-bottom-right-radius: 4px; }
.bubble.ok { background: var(--ok-soft); color: var(--ok); font-weight: 600; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; }
.chip { padding: 4px 10px; border-radius: 999px; border: 1px solid var(--border); background: var(--card); font-size: .78rem; }
.chip.on { border-color: var(--brand); color: var(--brand-text); background: var(--brand-soft); font-weight: 600; }

/* ---- Secciones ---- */
.section { padding: 80px 0; position: relative; }
.section.alt { background: var(--bg-alt); }
.section-title { margin: 0 0 12px; font-size: clamp(1.6rem, 3vw, 2.2rem); text-align: center; }
.section-sub { margin: 0 auto 40px; max-width: 640px; text-align: center; color: var(--muted); }
.anchor { position: absolute; top: 0; }
:target, .anchor { scroll-margin-top: 80px; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature { padding: 24px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); box-shadow: var(--shadow); }
.feature svg { width: 40px; height: 40px; padding: 9px; border-radius: 12px; background: var(--brand-soft); fill: none; stroke: var(--brand-text); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.feature h3 { margin: 14px 0 6px; font-size: 1.08rem; }
.feature p { margin: 0; color: var(--muted); font-size: .95rem; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 32px 0 0; padding: 0; list-style: none; }
.steps li { padding: 26px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--border); }
.step-n { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; font-weight: 700; }
.steps h3 { margin: 14px 0 6px; }
.steps p { margin: 0; color: var(--muted); }

.faq { border: 1px solid var(--border); border-radius: 12px; background: var(--card); margin-bottom: 10px; }
.faq summary { cursor: pointer; padding: 16px 18px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--brand-text); font-size: 1.3rem; line-height: 1; }
.faq[open] summary::after { content: "–"; }
.faq p { margin: 0; padding: 0 18px 16px; color: var(--muted); }

/* ---- Formularios ---- */
.tabs { display: flex; gap: 6px; padding: 5px; margin: 0 auto 16px; width: fit-content; max-width: 100%; border-radius: 14px; background: var(--card); border: 1px solid var(--border); }
.tab { border: 0; background: none; color: var(--muted); font: inherit; font-weight: 600; padding: 9px 16px; border-radius: 10px; cursor: pointer; }
.tab[aria-selected=true] { background: var(--brand-soft); color: var(--brand-text); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.form { padding: 26px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
label { display: block; margin-bottom: 14px; font-size: .86rem; font-weight: 500; color: var(--muted); }
input, select, textarea { display: block; width: 100%; margin-top: 6px; padding: 11px 12px; font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 10px; }
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 22%, transparent); }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.captcha:empty { display: none; }
.captcha { margin-bottom: 12px; }
.form-msg { min-height: 1.4em; margin: 0 0 12px; font-size: .92rem; }
.form-msg.bad { color: var(--danger); }
.form-msg.good { color: var(--ok); font-weight: 600; }
.form .btn { width: 100%; }
.done { padding: 34px 26px; text-align: center; }
.done-icon { display: grid; place-items: center; width: 56px; height: 56px; margin: 0 auto 12px; border-radius: 50%; background: var(--ok-soft); color: var(--ok); font-size: 1.6rem; font-weight: 700; }
.done h3 { margin: 0 0 6px; }
.done p { margin: 0 0 16px; color: var(--muted); }

/* ---- Pie ---- */
.footer { border-top: 1px solid var(--border); padding: 26px 0; color: var(--muted); font-size: .92rem; }
.footer-in { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.footer nav { display: flex; gap: 18px; }
.footer a { color: var(--muted); text-decoration: none; }
.footer a:hover { color: var(--text); }

/* ---- Suscripción ---- */
.sub-page { min-height: 100dvh; display: grid; align-content: start; }
.sub-main { padding: 56px 0 72px; }
.plan { display: grid; grid-template-columns: .9fr 1.1fr; gap: 24px; align-items: start; }
.plan-card { padding: 28px; }
.plan-card h2 { margin: 0 0 4px; }
.price { margin: 18px 0 6px; font-size: 2.6rem; font-weight: 800; letter-spacing: -.03em; }
.price small { font-size: 1rem; font-weight: 500; color: var(--muted); }
.plan-list { margin: 18px 0 0; padding: 0; list-style: none; display: grid; gap: 9px; }
.plan-list li::before { content: "✓"; margin-right: 9px; color: var(--ok); font-weight: 700; }
.muted { color: var(--muted); }
.notice { padding: 40px 26px; text-align: center; }

@media (max-width: 900px) {
  .hero-in, .plan { grid-template-columns: 1fr; }
  .phone { order: 2; }
  .features, .steps { grid-template-columns: 1fr 1fr; }
  .nav { display: none; }
  .topbar .btn { margin-left: auto; }
}
@media (max-width: 600px) {
  .hero { padding: 44px 0 40px; }
  .section { padding: 56px 0; }
  .features, .steps, .grid2 { grid-template-columns: 1fr; }
  .wrap { padding: 0 16px; }
  .tabs { width: 100%; }
  .tab { flex: 1; padding: 9px 8px; font-size: .9rem; }
  .form { padding: 20px 16px; }
}