/* ============================================================
   heaptech — landing v3
   Sistema: blanco premium (doctrina Stripe) adaptado al teal de
   heaptech. Display: Space Grotesk 500 · Body: DM Sans.
   Cadencia luz/sombra: blanco → navy profundo → blanco.
   ============================================================ */

:root {
  --ink: #0b1d2a;          /* headings, deep navy */
  --body: #52657a;         /* texto */
  --muted: #7e8fa0;        /* secundario */
  --bg: #ffffff;
  --soft: #f5f8fa;
  --line: #e3ecf2;
  --accent: #0e7c6b;       /* teal accesible sobre blanco */
  --accent-strong: #0a655a;
  --accent-soft: #e0f2ef;

  --dark-bg: #0b1d2a;
  --dark-deep: #081420;
  --dark-line: rgba(255, 255, 255, .13);
  --dark-card: rgba(255, 255, 255, .05);
  --dark-txt: #e8f0f4;
  --dark-muted: #9db1bf;
  --teal-bright: #35d0ba;

  --f-display: 'Space Grotesk', system-ui, sans-serif;
  --f-body: 'DM Sans', system-ui, sans-serif;

  --radius: 10px;
  --shadow-2: 0 3px 6px rgba(11, 29, 42, .05), 0 10px 24px rgba(11, 29, 42, .07);
  --shadow-3: 0 24px 48px -24px rgba(11, 29, 42, .25), 0 12px 24px -12px rgba(2, 6, 10, .10);
  --wrap: 1120px;
  --narrow: 760px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--f-display);
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 1.12;
  text-wrap: balance;
}

p { text-wrap: pretty; }
a { color: var(--accent); }
img { display: block; max-width: 100%; }
strong { color: var(--ink); font-weight: 600; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }
.narrow { max-width: var(--narrow); }

.sec { padding: 104px 0; }
.sec-soft { background: var(--soft); }
.sec-dark {
  background:
    radial-gradient(1100px 520px at 78% -8%, rgba(53, 208, 186, .09), transparent 62%),
    var(--dark-bg);
  color: var(--dark-txt);
}
.sec-dark h2, .sec-dark h3, .sec-dark h4 { color: #fff; }
.sec-dark .lead { color: var(--dark-muted); }
.sec-dark .lead strong { color: #fff; }
.sec-dark .fine { color: var(--dark-muted); }
.sec-dark .eyebrow { color: var(--teal-bright); }

/* ---------- eyebrow / headings ---------- */
.eyebrow {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}

h1 { font-size: clamp(2.2rem, 4.6vw, 3.5rem); letter-spacing: -0.03em; }
h1 em { font-style: normal; color: var(--accent); }

.sec h2 { font-size: clamp(1.7rem, 3vw, 2.25rem); margin-bottom: 14px; }

.lead { font-size: 1.16rem; max-width: 62ch; margin-bottom: 12px; }

.fine { font-size: .85rem; color: var(--muted); }

/* ---------- header ---------- */
.hdr {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.hdr-in { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand {
  font-family: var(--f-display); font-weight: 700; font-size: 1.25rem;
  color: var(--ink); text-decoration: none; letter-spacing: -0.02em;
}
.brand-dot { color: var(--accent); }
.nav { display: flex; align-items: center; gap: 26px; }
.nav a {
  font-size: .92rem; font-weight: 500; color: var(--ink);
  text-decoration: none; transition: color .15s;
}
.nav a:hover { color: var(--accent); }
.nav-cta {
  background: var(--ink); color: #fff !important;
  padding: 9px 18px; border-radius: 6px; font-weight: 600 !important;
  transition: background .15s;
}
.nav-cta:hover { background: var(--accent-strong); }

/* ---------- botones ---------- */
.btn {
  display: inline-block; font-family: var(--f-body); font-weight: 600;
  font-size: 1rem; text-decoration: none; text-align: center;
  padding: 13px 26px; border-radius: 7px; border: 1px solid transparent;
  cursor: pointer; transition: background .15s, border-color .15s, box-shadow .15s, transform .15s;
}
.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 1px 3px rgba(11, 29, 42, .18), 0 8px 20px -8px rgba(14, 124, 107, .45);
}
.btn-primary:hover { background: var(--accent-strong); transform: translateY(-1px); }
.btn-primary:disabled { opacity: .6; cursor: wait; transform: none; }
.btn-ghost { color: var(--ink); border-color: var(--line); background: #fff; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-big { padding: 15px 34px; font-size: 1.05rem; }

/* ---------- hero ---------- */
.hero {
  padding: 84px 0 88px;
  background:
    radial-gradient(900px 420px at 88% 0%, rgba(14, 124, 107, .05), transparent 60%),
    #fff;
}
.hero-in { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero h1 { margin-bottom: 20px; }
.hero .sub { font-size: 1.14rem; max-width: 56ch; margin-bottom: 10px; }
.hero .sub.strong { font-size: 1.05rem; margin-bottom: 26px; color: var(--ink); }
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 30px; }

.strip {
  display: flex; flex-wrap: wrap; gap: 6px 0;
  list-style: none; font-size: .86rem; color: var(--muted); font-weight: 500;
}
.strip li { display: flex; align-items: center; }
.strip li:not(:last-child)::after { content: "·"; margin: 0 10px; color: #c4d2da; }

.hero-shot {
  position: relative; margin: 0;
  border-radius: 14px; background: var(--dark-bg);
  padding: 10px; box-shadow: var(--shadow-3);
  transform: rotate(.6deg);
}
.hero-shot img { width: 100%; height: auto; aspect-ratio: 8/5; object-fit: cover; border-radius: 9px; }
.hs-cap {
  position: absolute; left: 18px; bottom: 18px;
  background: rgba(11, 29, 42, .82); backdrop-filter: blur(6px);
  color: #fff; font-size: .82rem; font-weight: 500;
  padding: 8px 14px; border-radius: 999px; border: 1px solid rgba(255,255,255,.14);
}

/* ---------- flagship + módulos (servicios) ---------- */
.flagship {
  display: grid; grid-template-columns: 1.4fr 1fr;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-2); margin: 44px 0 18px; overflow: hidden;
}
.flag-body { padding: 40px 44px; }
.flag-kicker {
  font-size: .8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 12px;
}
.flag-body h3 { font-size: 1.55rem; margin-bottom: 12px; }
.flag-body p { color: var(--body); font-size: 1.02rem; max-width: 52ch; }
.flag-price {
  font-family: var(--f-display); font-size: 1.06rem; font-weight: 700; color: var(--ink);
  margin: 18px 0 22px; padding: 10px 16px; background: var(--accent-soft);
  border-radius: 7px; display: inline-block;
}
.flag-body .btn { margin-top: 4px; }
.flag-aside { background: var(--soft); border-left: 1px solid var(--line); padding: 40px 36px; }
.flag-aside h4 {
  font-size: .8rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 14px;
}
.flag-aside ul { list-style: none; }
.flag-aside li {
  padding: 9px 0 9px 26px; position: relative; font-size: .95rem;
  border-bottom: 1px solid var(--line);
}
.flag-aside li:last-child { border-bottom: 0; }
.flag-aside li::before {
  content: ""; position: absolute; left: 2px; top: 15px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent-soft) url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 12 12"%3E%3Cpath d="M3 6.2l2 2 4-4.4" stroke="%230e7c6b" stroke-width="1.8" fill="none" stroke-linecap="round" stroke-linejoin="round"/%3E%3C/svg%3E') center/cover;
}

.modules {
  list-style: none; display: grid; grid-template-columns: 1fr 1fr;
  border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; background: #fff;
}
.modules li { padding: 30px 36px; border-top: 1px solid var(--line); }
.modules li:nth-child(-n+2) { border-top: 0; }
.modules li:nth-child(odd) { border-right: 1px solid var(--line); }
.modules h4 { font-size: 1.08rem; margin-bottom: 8px; }
.modules p { color: var(--body); font-size: .96rem; }

/* ---------- planes ---------- */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 44px 0 22px; align-items: stretch; }
.plan {
  background: var(--dark-card); border: 1px solid var(--dark-line);
  border-radius: 12px; padding: 32px 30px; transition: border-color .15s, transform .15s;
  display: flex; flex-direction: column;
}
.plan:hover { border-color: rgba(53, 208, 186, .45); }
.plan-featured {
  background: linear-gradient(180deg, rgba(53, 208, 186, .10), rgba(53, 208, 186, .03));
  border-color: rgba(53, 208, 186, .55);
  transform: translateY(-8px);
  box-shadow: 0 24px 48px -24px rgba(0, 0, 0, .5);
}
.plan-tag {
  display: inline-block; align-self: flex-start; font-size: .72rem; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase; color: var(--dark-bg);
  background: var(--teal-bright); padding: 4px 10px; border-radius: 5px; margin-bottom: 16px;
}
.plan h3 { font-size: 1.2rem; margin-bottom: 6px; }
.plan-price {
  font-family: var(--f-display); font-size: 1.9rem; color: var(--teal-bright);
  margin-bottom: 18px; letter-spacing: -0.02em;
}
.plan ul { list-style: none; }
.plan li { padding: 7px 0 7px 26px; position: relative; font-size: .95rem; color: var(--dark-muted); }
.plan li::before {
  content: ""; position: absolute; left: 2px; top: 13px; width: 14px; height: 14px; border-radius: 50%;
  background: rgba(53, 208, 186, .16) url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 12 12"%3E%3Cpath d="M3 6.2l2 2 4-4.4" stroke="%2335d0ba" stroke-width="1.8" fill="none" stroke-linecap="round" stroke-linejoin="round"/%3E%3C/svg%3E') center/cover;
}

/* ---------- pasos ---------- */
.steps { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin: 44px 0 34px; }
.steps li { position: relative; padding-top: 24px; border-top: 2px solid var(--line); }
.steps span {
  display: block; font-family: var(--f-display); font-weight: 700; font-size: 2.6rem;
  color: var(--accent); opacity: .35; line-height: 1; margin-bottom: 14px; letter-spacing: -0.03em;
}
.steps h3 { font-size: 1.15rem; margin-bottom: 8px; }
.steps p { font-size: .97rem; }

/* ---------- ejemplos / software ---------- */
.samples { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 40px; }
.sample {
  display: flex; flex-direction: column; gap: .35em;
  background: #f4f9f8; border: 1px solid rgba(14, 124, 107, .16); border-radius: var(--radius);
  background: color-mix(in srgb, var(--accent) 5%, #fff);
  padding: 28px 30px 30px; text-decoration: none; color: var(--ink);
  transition: border-color .15s, transform .15s, box-shadow .15s, background-color .15s;
}
.sample:hover { border-color: rgba(14, 124, 107, .5); transform: translateY(-3px); box-shadow: var(--shadow-2);
  background: color-mix(in srgb, var(--accent) 8%, #fff); }
.s-name { margin-top: .15em; }
.s-sector { font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); font-weight: 700; }
.s-name { font-family: var(--f-display); font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; color: var(--ink); }
.s-desc { color: var(--body); font-size: .95rem; max-width: 46ch; }
.s-cta { margin-top: .7em; color: var(--accent); font-weight: 700; font-size: .9rem; }
.s-cta::after { content: " →"; transition: margin .15s; }
.sample:hover .s-cta::after { margin-left: 3px; }

/* ---------- sistema (dentro de por-qué) ---------- */
.sys { list-style: none; margin: 38px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.sys li { background: #fff; border: 1px solid var(--line); border-radius: 9px; padding: 22px 24px; }
.sys h4 { font-size: 1rem; margin-bottom: 6px; }
.sys p { color: var(--body); font-size: .92rem; }

/* ---------- faq ---------- */
details {
  border: 1px solid var(--line); border-radius: 9px; background: #fff;
  margin: 10px 0; padding: 0 24px;
}
details[open] { border-color: rgba(14, 124, 107, .5); }
summary {
  cursor: pointer; list-style: none; display: flex; align-items: center;
  justify-content: space-between; gap: 16px;
  padding: 18px 0; font-weight: 600; color: var(--ink); font-size: 1.02rem;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+"; font-family: var(--f-display); font-weight: 500;
  color: var(--accent); font-size: 1.4rem; line-height: 1;
  transition: transform .2s; flex-shrink: 0;
}
details[open] summary::after { transform: rotate(45deg); }
details p { padding: 0 0 20px; max-width: 62ch; }

/* ---------- form ---------- */
form { max-width: 640px; margin-top: 36px; display: flex; flex-direction: column; gap: 4px;
  transition: opacity .45s ease, transform .45s ease; }
form[hidden] { display: none; }
form.is-sent { opacity: 0; transform: translateY(-10px) scale(.99); pointer-events: none; }
.f-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.f-field { margin-bottom: 16px; }
.f-field label { display: block; font-size: .88rem; font-weight: 600; color: var(--dark-txt); margin-bottom: 7px; }
.f-field label .opt { color: var(--dark-muted); font-weight: 400; }
.f-field input[type="text"], .f-field input[type="tel"], .f-field input[type="email"], .f-field textarea {
  width: 100%; background: rgba(255, 255, 255, .06);
  border: 1px solid var(--dark-line); border-radius: 7px;
  color: #fff; font: inherit; font-size: .98rem; padding: 12px 14px;
  transition: border-color .15s, box-shadow .15s;
}
.f-field input:focus, .f-field textarea:focus {
  outline: none; border-color: var(--teal-bright);
  box-shadow: 0 0 0 3px rgba(53, 208, 186, .22);
}
.f-field input::placeholder, .f-field textarea::placeholder { color: rgba(157, 177, 191, .65); }
.f-check { display: flex; gap: 10px; align-items: flex-start; }
.f-check input { margin-top: 5px; width: 16px; height: 16px; accent-color: var(--teal-bright); flex-shrink: 0; }
.f-check label { font-weight: 400; font-size: .86rem; color: var(--dark-muted); margin: 0; }
.f-check a { color: var(--teal-bright); }
.f-msg { min-height: 1.4em; margin: 4px 0 10px; font-size: .92rem; }
.f-msg.ok { color: var(--teal-bright); }
.f-msg.err { color: #ff9d9d; }
.input-err { border-color: #ff9d9d !important; box-shadow: 0 0 0 1px #ff9d9d; }
.hp { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }

/* confirmación de envío */
.form-ok { max-width: 640px; margin-top: 36px; text-align: center; padding: 24px 0 8px; }
.form-ok[hidden] { display: none; }
.form-ok svg { width: 64px; height: 64px; display: block; margin: 0 auto 18px; }
.form-ok svg circle, .form-ok svg path {
  fill: none; stroke: var(--teal-bright); stroke-width: 3;
  stroke-linecap: round; stroke-linejoin: round;
}
.form-ok svg circle { stroke-dasharray: 151; stroke-dashoffset: 151; animation: draw .6s ease-out forwards; }
.form-ok svg path { stroke-dasharray: 36; stroke-dashoffset: 36; animation: draw .35s .55s ease-out forwards; }
.form-ok h3 { font-size: clamp(1.9rem, 4vw, 2.8rem); color: #fff; margin-bottom: 10px; }
.form-ok p { color: var(--dark-muted); font-size: 1.05rem; }
.form-ok svg, .form-ok h3, .form-ok p { animation: rise .55s cubic-bezier(.2, .7, .3, 1) both; }
.form-ok h3 { animation-delay: .15s; }
.form-ok p { animation-delay: .25s; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* reveal al hacer scroll (las clases las pone site.js: sin JS no se oculta nada) */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- footer ---------- */
.ftr {
  background: var(--dark-deep); color: var(--dark-muted);
  padding: 56px 0; border-top: 1px solid rgba(255, 255, 255, .07);
}
.ftr .brand { color: #fff; display: inline-block; margin-bottom: 10px; font-size: 1.15rem; }
.ftr p { font-size: .9rem; }
.ftr a { color: var(--dark-muted); text-decoration: none; transition: color .15s; }
.ftr a:hover { color: var(--teal-bright); }
.ftr-links { margin-top: 6px; }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero-in { grid-template-columns: 1fr; gap: 40px; }
  .hero-shot { max-width: 560px; transform: none; }
  .flagship { grid-template-columns: 1fr; }
  .flag-aside { border-left: 0; border-top: 1px solid var(--line); }
  .plans { grid-template-columns: 1fr; max-width: 480px; margin-inline: auto; }
  .plan-featured { transform: none; }
  .steps { grid-template-columns: 1fr; gap: 20px; }
  .sys { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .sec { padding: 72px 0; }
  .hero { padding: 56px 0 64px; }
  .wrap { padding: 0 20px; }
  .samples { grid-template-columns: 1fr; }
  .modules { grid-template-columns: 1fr; }
  .modules li { border-right: 0 !important; }
  .modules li:nth-child(-n+2) { border-top: 1px solid var(--line); }
  .modules li:first-child { border-top: 0; }
  .f-row { grid-template-columns: 1fr; gap: 0; }
  .nav a:not(.nav-cta) { display: none; }
  .hero h1 { font-size: 2.1rem; }
  .steps span { font-size: 2.1rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
  .reveal { opacity: 1; transform: none; }
  .form-ok svg circle, .form-ok svg path { stroke-dashoffset: 0; }
}