:root {
  --bg: #0B1020;
  --text: #F5F7FF;
  --muted: #b8bfe0;
  --dim: #8890b5;
  --accent-green: #39FF14;
  --accent-teal: #00D1B2;
  --accent-blue: #0057FF;
  --card-bg: #131a30;
  --border: #22294a;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent-teal);
  color: #0B1020;
  padding: 10px 18px;
  border-radius: 0 0 8px 0;
  font-weight: 700;
  z-index: 100;
}

.skip-link:focus {
  left: 0;
}

:focus-visible {
  outline: 2px solid var(--accent-teal);
  outline-offset: 3px;
}

/* Tipografía compartida */
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-teal);
  margin-bottom: 14px;
}

.eyebrow.center {
  text-align: center;
}

h2 {
  text-align: center;
  font-size: clamp(1.7rem, 3.5vw, 2.3rem);
  line-height: 1.25;
  margin-bottom: 14px;
}

.section-lead {
  text-align: center;
  color: var(--muted);
  max-width: 620px;
  margin: 0 auto 48px;
}

.grad {
  background: linear-gradient(100deg, var(--accent-teal), var(--accent-green));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background: rgba(11, 16, 32, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  z-index: 20;
  transition: border-color 200ms ease, box-shadow 200ms ease;
}

.header.is-scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
}

.logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  line-height: 0;
}

.logo img {
  height: 36px;
  width: auto;
  display: block;
}

@media (max-width: 700px) {
  .logo img {
    height: 30px;
  }
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 200ms var(--ease-out), opacity 200ms ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-links {
  display: flex;
  align-items: center;
}

.nav-links a {
  position: relative;
  color: var(--text);
  text-decoration: none;
  margin-left: 26px;
  font-size: 0.93rem;
  transition: color 160ms ease;
}

.nav-links a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 1px;
  background: var(--accent-green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 200ms var(--ease-out);
}

.nav-cta {
  border: 1px solid var(--border);
  padding: 8px 18px;
  border-radius: 8px;
  transition: border-color 200ms ease, color 160ms ease, background 200ms ease;
}

@media (hover: hover) and (pointer: fine) {
  .nav-links a:hover {
    color: var(--accent-green);
  }

  .nav-links a:not(.nav-cta):hover::after {
    transform: scaleX(1);
  }

  .nav-cta:hover {
    border-color: var(--accent-teal);
    background: rgba(0, 209, 178, 0.08);
    color: var(--accent-teal);
  }
}

/* Hero */
.hero {
  padding: 110px 0 80px;
  text-align: center;
  position: relative;
  background:
    radial-gradient(circle at 50% -10%, rgba(0, 87, 255, 0.22), transparent 55%),
    radial-gradient(circle at 80% 20%, rgba(0, 209, 178, 0.09), transparent 45%);
}

.hero h1 {
  font-size: clamp(2.1rem, 5.5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
  max-width: 820px;
  margin: 0 auto 22px;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 600px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.hero-stats dt {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent-teal);
  margin-bottom: 4px;
}

.hero-stats dd {
  color: var(--dim);
  font-size: 0.9rem;
}

/* Botones */
.btn-primary,
.btn-ghost {
  display: inline-block;
  font-weight: 700;
  padding: 14px 30px;
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
  font-size: 1rem;
  font-family: inherit;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent-teal);
  color: #0B1020;
  transition: transform 160ms var(--ease-out), background 200ms ease, box-shadow 200ms ease;
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
  transition: transform 160ms var(--ease-out), border-color 200ms ease, background 200ms ease;
}

.btn-ghost:active {
  transform: scale(0.97);
}

@media (hover: hover) and (pointer: fine) {
  .btn-primary:hover {
    background: var(--accent-green);
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(57, 255, 20, 0.18);
  }

  .btn-primary:active {
    transform: scale(0.97) translateY(0);
  }

  .btn-ghost:hover {
    border-color: var(--accent-teal);
    background: rgba(0, 209, 178, 0.07);
    transform: translateY(-2px);
  }

  .btn-ghost:active {
    transform: scale(0.97) translateY(0);
  }
}

/* Servicios */
.servicios {
  padding: 90px 0;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 22px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 30px;
  transition: border-color 200ms ease, transform 200ms var(--ease-out), box-shadow 200ms ease;
}

.card-icon {
  font-size: 1.6rem;
  color: var(--accent-teal);
  margin-bottom: 14px;
  line-height: 1;
}

.card h3 {
  font-size: 1.13rem;
  margin-bottom: 9px;
}

.card p {
  color: var(--muted);
  font-size: 0.95rem;
}

@media (hover: hover) and (pointer: fine) {
  .card:hover {
    border-color: var(--accent-teal);
    transform: translateY(-4px);
    box-shadow: 0 16px 34px rgba(0, 0, 0, 0.3);
  }
}

/* Casos */
.casos {
  padding: 90px 0;
  background: rgba(19, 26, 48, 0.4);
  border-block: 1px solid var(--border);
}

.clientes {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 22px;
  max-width: 800px;
  margin: 0 auto;
}

.cliente {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 220px;
  min-height: 110px;
  padding: 26px 36px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  text-decoration: none;
  transition: border-color 200ms ease, transform 200ms var(--ease-out), box-shadow 200ms ease;
}

.cliente img {
  max-width: 170px;
  max-height: 56px;
  width: auto;
  height: auto;
  object-fit: contain;
  opacity: 0.92;
  transition: opacity 200ms ease, filter 200ms ease;
}

/* Logos con fondo negro sólido: el negro se funde con la tarjeta */
.cliente img.logo-blend {
  mix-blend-mode: screen;
  filter: brightness(1.35) contrast(1.1);
}

/* Logos con fondo blanco: se muestran sobre placa clara para respetar la marca */
.cliente img.logo-plate {
  background: #fff;
  border-radius: 8px;
  padding: 10px 14px;
  max-height: 66px;
  opacity: 1;
}

.cliente-wordmark {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  white-space: nowrap;
}

@media (hover: hover) and (pointer: fine) {
  .cliente:hover {
    border-color: var(--accent-teal);
    transform: translateY(-3px);
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.28);
  }

  .cliente:hover img {
    opacity: 1;
  }
}

/* Proceso */
.proceso {
  padding: 90px 0;
}

.pasos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 26px;
  list-style: none;
  counter-reset: paso;
}

.pasos li {
  position: relative;
  padding-top: 14px;
  border-top: 2px solid var(--border);
  transition: border-color 200ms ease;
}

.paso-num {
  display: block;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent-teal);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.pasos h3 {
  font-size: 1.08rem;
  margin-bottom: 7px;
}

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

@media (hover: hover) and (pointer: fine) {
  .pasos li:hover {
    border-top-color: var(--accent-teal);
  }
}

/* Stack */
.stack {
  padding: 60px 0 90px;
}

.stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  max-width: 780px;
  margin: 0 auto;
}

.stack-tags span {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 0.88rem;
  color: var(--muted);
  transition: border-color 200ms ease, color 160ms ease, transform 200ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .stack-tags span:hover {
    border-color: var(--accent-teal);
    color: var(--text);
    transform: translateY(-2px);
  }
}

/* FAQ */
.faq {
  padding: 90px 0;
  background: rgba(19, 26, 48, 0.4);
  border-block: 1px solid var(--border);
}

.faq-content {
  max-width: 760px;
}

.faq h2 {
  margin-bottom: 44px;
}

.faq details {
  border-bottom: 1px solid var(--border);
  padding: 4px 0;
}

.faq summary {
  cursor: pointer;
  padding: 18px 34px 18px 0;
  font-weight: 600;
  font-size: 1.02rem;
  list-style: none;
  position: relative;
  transition: color 160ms ease;
}

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

.faq summary::after {
  content: '+';
  position: absolute;
  right: 4px;
  top: 50%;
  translate: 0 -50%;
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--accent-teal);
  transition: rotate 250ms var(--ease-out);
}

.faq details[open] summary::after {
  rotate: 45deg;
}

.faq details p {
  color: var(--muted);
  font-size: 0.95rem;
  padding: 0 0 20px;
  max-width: 90%;
  animation: faqOpen 260ms var(--ease-out);
}

@keyframes faqOpen {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (hover: hover) and (pointer: fine) {
  .faq summary:hover {
    color: var(--accent-teal);
  }
}

/* Contacto */
.contacto {
  padding: 90px 0 100px;
}

.contacto-content {
  max-width: 540px;
  text-align: center;
}

#contact-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  text-align: left;
}

#contact-form input,
#contact-form textarea,
#contact-form select {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 180ms ease, background 180ms ease;
}

#contact-form select {
  cursor: pointer;
}

#contact-form input::placeholder,
#contact-form textarea::placeholder {
  color: var(--dim);
}

#contact-form input:focus,
#contact-form textarea:focus,
#contact-form select:focus {
  outline: none;
  border-color: var(--accent-teal);
  background: #172040;
}

#contact-form button {
  margin-top: 6px;
}

.form-legal {
  font-size: 0.82rem;
  color: var(--dim);
  text-align: center;
  margin-top: 2px;
}

.form-legal a {
  color: var(--accent-teal);
  text-decoration: none;
}

.form-note {
  color: var(--accent-green);
  font-weight: 600;
  font-size: 1.05rem;
  padding: 20px 0;
}

.contacto-alt {
  margin-top: 26px;
  color: var(--dim);
  font-size: 0.92rem;
}

.contacto-alt a {
  color: var(--accent-teal);
  text-decoration: none;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 28px;
  color: var(--dim);
  font-size: 0.9rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 36px;
  padding-bottom: 32px;
}

.footer-brand p {
  margin-top: 12px;
  max-width: 300px;
  font-size: 0.88rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer a {
  color: var(--dim);
  text-decoration: none;
  transition: color 160ms ease;
}

.footer .logo {
  color: var(--text);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 22px;
  text-align: center;
  font-size: 0.85rem;
}

@media (hover: hover) and (pointer: fine) {
  .footer a:hover {
    color: var(--accent-teal);
  }
}

/* Páginas legales */
.legal {
  padding: 70px 0 90px;
  max-width: 780px;
}

.legal h1 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  margin-bottom: 8px;
}

.legal .updated {
  color: var(--dim);
  font-size: 0.88rem;
  margin-bottom: 40px;
}

.legal h2 {
  text-align: left;
  font-size: 1.25rem;
  margin: 36px 0 12px;
}

.legal p,
.legal li {
  color: var(--muted);
  font-size: 0.96rem;
  margin-bottom: 12px;
}

.legal ul {
  padding-left: 22px;
  margin-bottom: 12px;
}

.legal a {
  color: var(--accent-teal);
  text-decoration: none;
}

.legal-back {
  display: inline-block;
  margin-bottom: 28px;
  color: var(--accent-teal);
  text-decoration: none;
  font-size: 0.92rem;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 500ms var(--ease-out), transform 500ms var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 860px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 700px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(11, 16, 32, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: 8px 24px 20px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 200ms var(--ease-out), transform 200ms var(--ease-out), visibility 200ms;
  }

  .nav-links.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-links a {
    margin-left: 0;
    padding: 12px 0;
    font-size: 1rem;
  }

  .nav-cta {
    text-align: center;
    margin-top: 8px;
  }

  .hero {
    padding: 80px 0 60px;
  }

  .hero-actions {
    margin-bottom: 48px;
  }

  .servicios,
  .casos,
  .proceso,
  .faq,
  .contacto {
    padding: 60px 0;
  }

  .caso {
    padding: 26px 22px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    transform: none;
    transition: opacity 300ms ease;
  }

  .card:hover,
  .btn-primary:hover,
  .btn-ghost:hover,
  .cliente:hover,
  .stack-tags span:hover {
    transform: none;
  }

  .faq details p {
    animation: none;
  }
}