:root {
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-soft: #eff6ff;
  --navy: #0f172a;
  --text: #334155;
  --muted: #64748b;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --border: #e2e8f0;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --max: 1100px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--blue);
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Header / navegación ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--navy);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.logo-badge {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--blue);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 1.05rem;
  font-weight: 800;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}

.nav-links a:hover {
  background: var(--bg-soft);
  color: var(--blue);
}

.nav-links a.active {
  background: var(--blue-soft);
  color: var(--blue);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
}

/* ---------- Hero ---------- */

.hero {
  text-align: center;
  padding: 80px 20px 72px;
  background: linear-gradient(180deg, var(--blue-soft) 0%, #ffffff 100%);
}

.hero-kicker {
  display: inline-block;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--blue);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.3rem);
  color: var(--navy);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.hero .tagline {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 640px;
  margin: 16px auto 32px;
}

.btn-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-row + .btn-row {
  margin-top: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.12s, background 0.15s, border-color 0.15s;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--blue);
  color: #fff;
}

.btn-primary:hover {
  background: var(--blue-dark);
}

.btn-ghost {
  background: #fff;
  color: var(--navy);
  border-color: var(--border);
}

.btn-ghost:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.btn-store {
  background: var(--navy);
  color: #fff;
  padding: 10px 20px 10px 18px;
  text-align: left;
  line-height: 1.2;
}

.btn-store:hover {
  background: #1e293b;
}

.btn-store svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.btn-store small {
  display: block;
  font-size: 0.68rem;
  font-weight: 400;
  opacity: 0.75;
}

.btn-store strong {
  font-size: 0.98rem;
  font-weight: 700;
}

/* ---------- Secciones ---------- */

.section {
  padding: 72px 20px;
}

.section-soft {
  background: var(--bg-soft);
}

.section-head {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 44px;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2rem);
  color: var(--navy);
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}

.section-head p {
  color: var(--muted);
}

/* ---------- Características ---------- */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}

.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: box-shadow 0.2s, transform 0.2s;
}

.feature-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--blue-soft);
  color: var(--blue);
  display: grid;
  place-items: center;
  margin-bottom: 16px;
}

.feature-icon svg {
  width: 22px;
  height: 22px;
}

.feature-card h3 {
  font-size: 1.02rem;
  color: var(--navy);
  margin-bottom: 6px;
}

.feature-card p {
  font-size: 0.93rem;
  color: var(--muted);
}

/* ---------- Capturas (mockups) ---------- */

.screens {
  display: flex;
  gap: 32px;
  justify-content: center;
  flex-wrap: wrap;
}

.phone {
  width: 232px;
  background: #fff;
  border: 9px solid var(--navy);
  border-radius: 34px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.phone-notch {
  height: 22px;
  background: var(--navy);
  position: relative;
}

.phone-notch::after {
  content: "";
  position: absolute;
  top: 7px;
  left: 50%;
  transform: translateX(-50%);
  width: 54px;
  height: 6px;
  border-radius: 999px;
  background: #334155;
}

.phone-body {
  padding: 16px 14px 20px;
  min-height: 320px;
}

.phone-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 4px;
}

.phone-sub {
  font-size: 0.72rem;
  color: var(--muted);
  margin-bottom: 12px;
}

.phone-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 0.8rem;
  color: var(--text);
}

.phone-item:last-child {
  border-bottom: none;
}

.phone-check {
  width: 16px;
  height: 16px;
  border: 2px solid var(--blue);
  border-radius: 5px;
  flex-shrink: 0;
}

.phone-check.done {
  background: var(--blue);
  border-color: var(--blue);
}

.phone-item.done span {
  text-decoration: line-through;
  color: var(--muted);
}

.phone-chip {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--blue);
  background: var(--blue-soft);
  border-radius: 999px;
  padding: 3px 10px;
  margin-bottom: 10px;
}

.phone-dark {
  background: var(--navy);
}

.phone-dark .phone-title {
  color: #f1f5f9;
}

.phone-dark .phone-sub,
.phone-dark .phone-item.done span {
  color: #94a3b8;
}

.phone-dark .phone-item {
  color: #e2e8f0;
  border-bottom-color: #1e293b;
}

.phone-dark .phone-check {
  border-color: #60a5fa;
}

.phone-dark .phone-check.done {
  background: #60a5fa;
  border-color: #60a5fa;
}

.phone-dark .phone-chip {
  background: #1e3a8a;
  color: #bfdbfe;
}

.phone-fab {
  margin-top: 16px;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: var(--blue);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 1.2rem;
  font-weight: 700;
  margin-left: auto;
}

/* ---------- FAQ ---------- */

.faq {
  max-width: 720px;
  margin: 0 auto;
}

.faq details {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  padding: 0 20px;
  transition: border-color 0.15s;
}

.faq details[open] {
  border-color: var(--blue);
}

.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 17px 0;
  font-weight: 600;
  color: var(--navy);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 0.98rem;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  color: var(--blue);
  font-size: 1.3rem;
  font-weight: 400;
  line-height: 1;
  flex-shrink: 0;
}

.faq details[open] summary::after {
  content: "\2013";
}

.faq p {
  padding-bottom: 18px;
  color: var(--text);
  font-size: 0.95rem;
}

/* ---------- CTA final ---------- */

.cta-box {
  background: var(--navy);
  border-radius: 20px;
  padding: 52px 28px;
  text-align: center;
  color: #fff;
}

.cta-box h2 {
  font-size: clamp(1.5rem, 3vw, 1.9rem);
  margin-bottom: 10px;
}

.cta-box p {
  color: #cbd5e1;
  margin-bottom: 26px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Páginas estáticas ---------- */

.page-hero {
  background: linear-gradient(180deg, var(--blue-soft) 0%, #ffffff 100%);
  padding: 56px 20px 44px;
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  color: var(--navy);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.page-hero p {
  color: var(--muted);
  max-width: 620px;
  margin: 0 auto;
}

.prose {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 20px 72px;
}

.prose .date {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.prose h2 {
  font-size: 1.15rem;
  color: var(--navy);
  margin: 30px 0 10px;
}

.prose p,
.prose li {
  font-size: 0.98rem;
  margin-bottom: 10px;
  color: var(--text);
}

.prose ul {
  padding-left: 22px;
  margin-bottom: 14px;
}

.prose li {
  margin-bottom: 6px;
}

.prose a {
  color: var(--blue);
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  padding: 40px 20px 28px;
}

.footer-grid {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 28px;
  flex-wrap: wrap;
}

.footer-brand p {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 10px;
  max-width: 280px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.footer-links a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.93rem;
}

.footer-links a:hover {
  color: var(--blue);
}

.footer-bottom {
  max-width: var(--max);
  margin: 28px auto 0;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--muted);
}

.footer-bottom a {
  color: var(--muted);
}

.footer-bottom a:hover {
  color: var(--blue);
}

/* ---------- Responsive ---------- */

@media (max-width: 760px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 10px 16px 16px;
    gap: 4px;
    display: none;
    box-shadow: var(--shadow);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 14px;
    border-radius: 10px;
  }

  .hero {
    padding: 56px 20px 48px;
  }

  .section {
    padding: 56px 20px;
  }

  .btn-row .btn {
    width: 100%;
    justify-content: center;
    max-width: 320px;
  }

  .footer-grid {
    flex-direction: column;
  }
}