/* ==========================================================================
   sections.css — Per-section composition
   ========================================================================== */

/* ============================================================== Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background-color: rgba(251, 251, 253, 0);
  backdrop-filter: saturate(180%) blur(0px);
  -webkit-backdrop-filter: saturate(180%) blur(0px);
  border-bottom: 1px solid transparent;
  transition:
    background-color 0.4s var(--ease-apple),
    backdrop-filter 0.4s var(--ease-apple),
    -webkit-backdrop-filter 0.4s var(--ease-apple),
    border-color 0.4s var(--ease-apple),
    box-shadow 0.4s var(--ease-apple);
}

.header.is-scrolled {
  background-color: rgba(251, 251, 253, 0.78);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: var(--space-3);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  flex-shrink: 0;
}

/* Brand: PNG wordmark (1012x339, ~30 KB). Height drives the size; width follows. */
.brand__logo {
  height: 34px;
  width: auto;
  display: block;
  flex-shrink: 0;
}

.footer__brand .brand__logo {
  height: 40px;
}

@media (max-width: 480px) {
  .brand__logo { height: 30px; }
}

/* Nav --------------------------------------------------------------------- */
.nav {
  display: none;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav__link {
  font-size: 14px;
  font-weight: var(--fw-medium);
  color: var(--color-text);
  opacity: 0.8;
  transition: opacity 0.2s var(--ease-apple), color 0.2s var(--ease-apple);
}

.nav__link:hover {
  opacity: 1;
  color: var(--color-accent);
}

.header__cta {
  display: none;
}

@media (min-width: 1024px) {
  .nav,
  .header__cta {
    display: block;
  }
  .header__cta {
    display: inline-flex;
  }
}

/* Hamburger --------------------------------------------------------------- */
.hamburger {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color 0.2s var(--ease-apple);
}

.hamburger:hover {
  background-color: rgba(0, 0, 0, 0.04);
}

.hamburger__bars {
  position: relative;
  width: 18px;
  height: 12px;
}

.hamburger__bars::before,
.hamburger__bars::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s var(--ease-apple), top 0.3s var(--ease-apple);
}

.hamburger__bars::before {
  top: 2px;
}

.hamburger__bars::after {
  top: 8px;
}

.hamburger.is-open .hamburger__bars::before {
  top: 5px;
  transform: rotate(45deg);
}

.hamburger.is-open .hamburger__bars::after {
  top: 5px;
  transform: rotate(-45deg);
}

@media (min-width: 1024px) {
  .hamburger {
    display: none;
  }
}

/* Mobile menu ------------------------------------------------------------- */
.mobile-menu {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background-color: rgba(251, 251, 253, 0.96);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-3) var(--container-pad) var(--space-4);
  transform: translateY(-110%);
  opacity: 0;
  visibility: hidden;
  transition:
    transform 0.4s var(--ease-out-quart),
    opacity 0.3s var(--ease-apple),
    visibility 0s linear 0.4s;
  z-index: 99;
}

.mobile-menu.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
  transition:
    transform 0.4s var(--ease-out-quart),
    opacity 0.3s var(--ease-apple),
    visibility 0s linear 0s;
}

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.mobile-menu__link {
  display: block;
  padding: var(--space-2) 0;
  font-size: 19px;
  font-weight: var(--fw-medium);
  letter-spacing: -0.01em;
  border-bottom: 1px solid var(--color-border);
}

.mobile-menu__link:last-child {
  border-bottom: 0;
}

.mobile-menu .btn {
  width: 100%;
}

@media (min-width: 1024px) {
  .mobile-menu {
    display: none;
  }
}

/* =============================================================== Hero */
.hero {
  position: relative;
  padding-block: calc(var(--header-h) + var(--space-5)) var(--space-4);
  overflow: hidden;
}

@media (min-width: 1024px) {
  .hero {
    padding-block: calc(var(--header-h) + var(--space-6)) var(--space-5);
  }
}

.hero__inner {
  position: relative;
  text-align: center;
  max-width: 920px;
  margin-inline: auto;
  z-index: 1;
}

.hero .pill {
  margin-bottom: var(--space-4);
  animation: heroFadeRise 0.8s var(--ease-out-quart) both;
}

.hero h1 {
  font-size: clamp(48px, 7.5vw, 96px);
  margin-bottom: var(--space-3);
  line-height: 1.1;
  padding-bottom: 0.08em;
  background: linear-gradient(180deg, var(--color-text) 0%, #424245 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: heroFadeRise 0.9s 0.05s var(--ease-out-quart) both;
}

.hero__subtitle {
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: var(--fw-medium);
  color: var(--color-text);
  letter-spacing: -0.018em;
  max-width: 680px;
  margin: 0 auto var(--space-3);
  line-height: 1.32;
  animation: heroFadeRise 0.9s 0.15s var(--ease-out-quart) both;
}

.hero__support {
  font-size: clamp(15px, 1.4vw, 17px);
  font-weight: var(--fw-regular);
  color: var(--color-text-mute);
  max-width: 560px;
  margin: 0 auto var(--space-5);
  line-height: 1.6;
  letter-spacing: -0.005em;
  animation: heroFadeRise 0.9s 0.25s var(--ease-out-quart) both;
}

.hero__support strong {
  color: var(--color-text);
  font-weight: var(--fw-semi);
}

.hero__ctas {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: center;
  justify-content: center;
  animation: heroFadeRise 0.9s 0.35s var(--ease-out-quart) both;
}

@media (min-width: 640px) {
  .hero__ctas {
    flex-direction: row;
  }
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.hero__bg::before,
.hero__bg::after {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.5;
}

.hero__bg::before {
  top: -200px;
  left: -150px;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.18), transparent 60%);
}

.hero__bg::after {
  bottom: -200px;
  right: -150px;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.12), transparent 60%);
}

@keyframes heroFadeRise {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================================ Problema */
.problema {
  background-color: var(--color-bg);
  padding-top: var(--space-5);
}

@media (min-width: 1024px) {
  .problema {
    padding-top: var(--space-6);
  }
}

.problema__statement {
  max-width: 760px;
  margin: 0 auto var(--space-6);
  text-align: center;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.45;
  color: var(--color-text);
  letter-spacing: -0.015em;
}

.problema__statement strong {
  font-weight: var(--fw-semi);
}

/* =========================================================== Solución */
.solucion {
  background-color: var(--color-bg-alt);
}

.solucion__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  align-items: center;
}

@media (min-width: 1024px) {
  .solucion__grid {
    grid-template-columns: 1.05fr 1fr;
    gap: var(--space-7);
  }
}

.solucion__copy h2 {
  margin-bottom: var(--space-3);
}

.solucion__copy .lead {
  margin-bottom: var(--space-4);
}

.solucion__points {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.solucion__point {
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
}

.solucion__point .check {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: rgba(0, 102, 204, 0.1);
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.solucion__point .check svg {
  width: 14px;
  height: 14px;
}

.solucion__point p {
  font-size: 17px;
  line-height: 1.5;
}

.solucion__point p strong {
  font-weight: var(--fw-semi);
}

/* Visual ------------------------------------------------------------------ */
.solucion__visual {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 520px;
  margin: 0 auto;
  width: 100%;
}

.solucion__visual svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 30px 60px rgba(0, 102, 204, 0.18));
}

/* ======================================================== Cómo funciona */
.como {
  background-color: var(--color-bg);
}

.como__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

@media (min-width: 768px) {
  .como__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
  }
}

/* ========================================================= Diferencial */
.diferencial {
  background-color: var(--color-bg-alt);
}

/* ================================================================ IA */
.ia {
  background-color: var(--color-bg);
  position: relative;
  overflow: hidden;
}

.ia__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  align-items: center;
}

@media (min-width: 1024px) {
  .ia__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-7);
  }
}

.ia__copy h2 {
  margin-bottom: var(--space-3);
}

.ia__benefits {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

@media (min-width: 480px) {
  .ia__benefits {
    grid-template-columns: repeat(3, 1fr);
  }
}

.ia__benefit {
  padding: var(--space-3);
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.ia__benefit .label {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: var(--fw-semi);
  color: var(--color-accent);
  margin-bottom: 6px;
}

.ia__benefit .value {
  font-size: 17px;
  font-weight: var(--fw-semi);
  letter-spacing: -0.01em;
  color: var(--color-text);
}

/* Agent grid visual ------------------------------------------------------- */
.agents {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 480px;
  width: 100%;
  margin: 0 auto;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(ellipse at center, rgba(0, 102, 204, 0.08), transparent 65%),
    linear-gradient(180deg, var(--color-bg-alt), var(--color-bg));
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.agents__grid {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(5, 1fr);
  padding: 14%;
  gap: 6%;
}

.agents__node {
  position: relative;
  border-radius: 50%;
  background-color: rgba(0, 102, 204, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
}

.agents__node::after {
  content: '';
  width: 28%;
  height: 28%;
  border-radius: 50%;
  background-color: var(--color-accent);
  opacity: 0.28;
  animation: agentPulse 3s var(--ease-apple) infinite;
}

.agents__node--active {
  background-color: rgba(0, 102, 204, 0.18);
}

.agents__node--active::after {
  opacity: 1;
  animation-delay: 0.4s;
}

.agents__node--core {
  background-color: var(--color-accent);
  box-shadow: 0 0 0 6px rgba(0, 102, 204, 0.18), 0 0 0 14px rgba(0, 102, 204, 0.08);
}

.agents__node--core::after {
  width: 40%;
  height: 40%;
  background-color: #fff;
  opacity: 1;
  animation: corePulse 2.4s var(--ease-apple) infinite;
}

@keyframes agentPulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.28;
  }
  50% {
    transform: scale(1.4);
    opacity: 0.7;
  }
}

@keyframes corePulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(0.7);
  }
}

.agents__lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.4;
}

/* ========================================================= Casos de uso */
.casos {
  background-color: var(--color-bg-alt);
}

/* ========================================================= CTA fuerte */
.cta-final {
  position: relative;
  padding-block: var(--space-8);
  background:
    radial-gradient(ellipse at top, rgba(0, 102, 204, 0.12), transparent 60%),
    var(--color-bg);
  text-align: center;
  overflow: hidden;
}

.cta-final__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
}

.cta-final h2 {
  margin-bottom: var(--space-3);
}

.cta-final .lead {
  margin-bottom: var(--space-5);
}

.cta-final__ctas {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

@media (min-width: 640px) {
  .cta-final__ctas {
    flex-direction: row;
    justify-content: center;
  }
}

.cta-final__reassurance {
  margin-top: var(--space-4);
  font-size: 14px;
  color: var(--color-text-mute);
}

/* ============================================================== Footer */
.footer {
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-5);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: start;
}

@media (min-width: 768px) {
  .footer__inner {
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-6);
  }
}

.footer__brand .brand {
  margin-bottom: var(--space-2);
}

.footer__tag {
  color: var(--color-text-mute);
  font-size: 14px;
  max-width: 320px;
  line-height: 1.5;
}

.footer__social {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-3);
  list-style: none;
  padding: 0;
}

.footer__social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  color: var(--color-text-mute);
  transition: color 0.2s var(--ease-apple),
              border-color 0.2s var(--ease-apple),
              transform 0.2s var(--ease-apple);
}

.footer__social a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

.footer__social svg {
  width: 18px;
  height: 18px;
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.footer__links a {
  font-size: 14px;
  color: var(--color-text-mute);
  transition: color 0.2s var(--ease-apple);
}

.footer__links a:hover {
  color: var(--color-text);
}

.footer__bottom {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  font-size: 13px;
  color: var(--color-text-mute);
}

@media (min-width: 768px) {
  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}