/* ==========================================================
   SparkMind Labs: estilos del sitio
   Colores y tipografías según docs/diseno.md
   ========================================================== */

:root {
  /* Colores */
  --tinta-marina: #0A1840;   /* títulos, footer, bloque CTA */
  --azul-chispa: #0B63F6;    /* botones, enlaces, color principal */
  --cian-electrico: #12B5F5; /* solo en degradados */
  --niebla: #F4F7FC;         /* fondo de secciones alternas */
  --blanco: #FFFFFF;
  --pizarra: #5B6478;        /* texto de párrafos */
  --verde-whatsapp: #25D366; /* solo elementos de WhatsApp */
  --borde: #E3E9F4;
  --azul-suave: #E7F0FF;     /* fondo de etiquetas e insignias */
  --error: #C4320A;          /* solo mensajes de error del formulario */

  /* Colores del chat (imitan a WhatsApp) */
  --chat-fondo: #EFEAE2;
  --chat-cabecera: #075E54;
  --chat-burbuja-in: #FFFFFF;
  --chat-burbuja-out: #D9FDD3;
  --chat-texto: #111B21;
  --chat-hora: #667781;

  /* Tipografía */
  --fuente-titulos: 'Bricolage Grotesque', system-ui, sans-serif;
  --fuente-texto: 'Figtree', system-ui, sans-serif;

  /* Medidas */
  --ancho-max: 1120px;
  --radio-tarjeta: 20px;
  --radio-boton: 12px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--fuente-texto);
  font-size: 17px;
  line-height: 1.6;
  color: var(--pizarra);
  background: var(--blanco);
}

h1,
h2,
h3 {
  font-family: var(--fuente-titulos);
  font-weight: 800;
  line-height: 1.1;
  color: var(--tinta-marina);
  margin: 0 0 0.5em;
}

a {
  color: var(--azul-chispa);
}

:focus-visible {
  outline: 3px solid var(--azul-chispa);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

/* ==========================================================
   Utilidades
   ========================================================== */

.container {
  width: 100%;
  max-width: var(--ancho-max);
  margin-inline: auto;
  padding-inline: 16px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: var(--radio-boton);
  background: var(--tinta-marina);
  color: var(--blanco);
  font-weight: 600;
}

.skip-link:focus {
  top: 16px;
}

/* Etiqueta pequeña en mayúsculas sobre los títulos */
.eyebrow {
  display: inline-block;
  margin: 0 0 20px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--azul-suave);
  color: var(--azul-chispa);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.text-gradient {
  background: linear-gradient(90deg, var(--azul-chispa), var(--cian-electrico));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Botones ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: var(--radio-boton);
  font: 600 16px/1 var(--fuente-texto);
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s, border-color 0.15s, transform 0.15s;
}

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

.btn:disabled {
  opacity: 0.7;
  cursor: progress;
}

.btn-primary {
  background: var(--azul-chispa);
  color: var(--blanco);
  box-shadow: 0 10px 24px -10px rgba(11, 99, 246, 0.7);
}

.btn-primary:hover {
  background: #0852D1;
}

.btn-whatsapp {
  background: var(--blanco);
  border-color: var(--borde);
  color: var(--tinta-marina);
}

.btn-whatsapp:hover {
  border-color: var(--verde-whatsapp);
}

.btn-whatsapp svg {
  width: 20px;
  height: 20px;
  fill: var(--verde-whatsapp);
}

.btn-sm {
  min-height: 42px;
  padding: 0 18px;
  font-size: 14px;
}

/* ==========================================================
   Menú
   ========================================================== */

.nav-wrap {
  position: sticky;
  top: 12px;
  z-index: 50;
  padding-inline: 16px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: var(--ancho-max);
  margin: 12px auto 0;
  padding: 10px 10px 10px 22px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  box-shadow: 0 12px 32px -16px rgba(10, 24, 64, 0.25), 0 0 0 1px var(--borde);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-right: auto;
  font: 800 22px/1 var(--fuente-titulos);
  color: var(--tinta-marina);
  text-decoration: none;
}

.logo span {
  color: var(--azul-chispa);
}

.logo-bolt {
  width: 22px;
  height: 22px;
  fill: var(--azul-chispa);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links {
  display: flex;
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-links a {
  color: var(--tinta-marina);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--azul-chispa);
}

.lang-switch {
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 3px;
  border-radius: 10px;
  background: var(--niebla);
  font-size: 13px;
  font-weight: 600;
}

.lang-switch > * {
  padding: 4px 9px;
  border-radius: 7px;
  color: var(--pizarra);
  text-decoration: none;
}

.lang-switch [aria-current] {
  background: var(--blanco);
  color: var(--tinta-marina);
  box-shadow: 0 1px 3px rgba(10, 24, 64, 0.12);
}

.nav-toggle {
  display: none;
}

/* Menú en celular y tablet */
@media (max-width: 900px) {
  .nav {
    flex-wrap: wrap;
    gap: 0;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 42px;
    padding: 0 14px;
    border: 1px solid var(--borde);
    border-radius: var(--radio-boton);
    background: var(--blanco);
    color: var(--tinta-marina);
    font: 600 14px/1 var(--fuente-texto);
    cursor: pointer;
  }

  .nav-toggle-bars,
  .nav-toggle-bars::before,
  .nav-toggle-bars::after {
    display: block;
    width: 16px;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
  }

  .nav-toggle-bars {
    position: relative;
  }

  .nav-toggle-bars::before,
  .nav-toggle-bars::after {
    content: "";
    position: absolute;
    left: 0;
  }

  .nav-toggle-bars::before { top: -5px; }
  .nav-toggle-bars::after { top: 5px; }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bars { background: transparent; }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { top: 0; transform: rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { top: 0; transform: rotate(-45deg); }

  /* Sin JavaScript el menú se ve siempre; con JavaScript se abre con el botón */
  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
    width: 100%;
    padding: 16px 12px 8px 0;
  }

  .js .nav-menu {
    display: none;
  }

  .js .nav-menu.is-open {
    display: flex;
  }

  .nav-links {
    flex-direction: column;
    gap: 0;
  }

  .nav-links a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid var(--borde);
    font-size: 17px;
  }

  .lang-switch {
    align-self: flex-start;
  }

  .nav-menu .btn {
    min-height: 50px;
  }
}

/* ==========================================================
   Hero
   ========================================================== */

.hero {
  margin-top: -84px;            /* el fondo empieza detrás del menú flotante */
  padding: 156px 0 96px;
  background:
    radial-gradient(60% 50% at 50% 100%, rgba(18, 181, 245, 0.14), transparent 70%),
    var(--niebla);
  overflow: hidden;
}

.hero-inner {
  text-align: center;
}

.hero h1 {
  max-width: 15em;
  margin-inline: auto;
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.hero h1 .text-gradient {
  white-space: nowrap;
}

.hero-lead {
  max-width: 62ch;
  margin: 24px auto 0;
  font-size: 18px;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.badges li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--borde);
  border-radius: 999px;
  background: var(--blanco);
  color: var(--tinta-marina);
  font-size: 14px;
  font-weight: 600;
}

.badges svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: var(--azul-chispa);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 36px;
}

/* ---------- Chat de WhatsApp ---------- */

.chat {
  width: min(400px, calc(100% - 18px));   /* deja lugar para el marco blanco */
  margin: 64px auto 0;
  border-radius: 26px;
  overflow: hidden;
  background: var(--chat-fondo);
  text-align: left;
  box-shadow:
    0 40px 80px -30px rgba(10, 24, 64, 0.45),
    0 0 0 8px var(--blanco),
    0 0 0 9px var(--borde);
}

.chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--chat-cabecera);
  color: var(--blanco);
}

.chat-header strong {
  display: block;
  font-size: 16px;
  line-height: 1.2;
}

.chat-header small {
  font-size: 13px;
  opacity: 0.85;
}

.chat-avatar {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--verde-whatsapp);
  color: var(--chat-cabecera);
  font-size: 14px;
  font-weight: 600;
}

.chat-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 330px;             /* reserva espacio para que la página no salte */
  margin: 0;
  padding: 18px 14px 22px;
  list-style: none;
}

.msg {
  position: relative;
  max-width: 82%;
  padding: 8px 12px 20px;
  border-radius: 12px;
  color: var(--chat-texto);
  font-size: 15px;
  line-height: 1.4;
  box-shadow: 0 1px 1px rgba(17, 27, 33, 0.12);
}

.msg time {
  position: absolute;
  right: 10px;
  bottom: 4px;
  color: var(--chat-hora);
  font-size: 11px;
}

.msg-in {
  align-self: flex-start;
  border-top-left-radius: 4px;
  background: var(--chat-burbuja-in);
}

.msg-out {
  align-self: flex-end;
  border-top-right-radius: 4px;
  background: var(--chat-burbuja-out);
}

.chat-typing {
  display: none;
  align-self: flex-end;
  gap: 4px;
  padding: 12px 14px;
  border-radius: 12px;
  border-top-right-radius: 4px;
  background: var(--chat-burbuja-out);
}

.chat-typing.is-visible {
  display: flex;
}

.chat-typing span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--chat-hora);
  animation: typing 1s infinite ease-in-out;
}

.chat-typing span:nth-child(2) { animation-delay: 0.15s; }
.chat-typing span:nth-child(3) { animation-delay: 0.3s; }

@keyframes typing {
  0%, 60%, 100% { opacity: 0.3; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-3px); }
}

/* Mientras se anima, los mensajes aparecen de a uno */
.chat.is-animating .msg:not(.is-visible) {
  display: none;
}

.chat.is-animating .msg.is-visible {
  animation: msg-in 0.25s ease-out;
}

@keyframes msg-in {
  from { opacity: 0; transform: translateY(6px) scale(0.98); }
  to { opacity: 1; transform: none; }
}

/* ---------- Hero en celular ---------- */

@media (max-width: 600px) {
  .hero {
    padding: 132px 0 64px;
  }

  .hero-lead {
    font-size: 17px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .chat {
    margin-top: 48px;
  }
}

/* ==========================================================
   Secciones (estructura común)
   ========================================================== */

.section {
  padding: 112px 0;
  background: var(--blanco);
}

.section-alt {
  background: var(--niebla);
}

/* Al saltar desde el menú, la sección no queda tapada por el menú flotante */
section[id] {
  scroll-margin-top: 72px;
}

.section-head {
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-head h2 {
  font-size: clamp(30px, 4vw, 44px);
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.section-head p:last-child {
  margin: 0;
  font-size: 18px;
}

/* Título y texto dentro de tarjetas y pasos */
.service-card h3,
.step h3,
.use-card h3 {
  margin-bottom: 8px;
}

.service-card p,
.step p,
.use-card p {
  margin: 0;
}

/* ==========================================================
   Servicios
   ========================================================== */

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-card {
  display: flex;
  flex-direction: column;
  padding: 40px;
  border: 1px solid var(--borde);
  border-radius: 24px;
  background: var(--blanco);
  box-shadow: 0 24px 48px -32px rgba(10, 24, 64, 0.3);
}

.service-card h3 {
  font-size: 24px;
}

.icon-box {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: 24px;
  border-radius: 14px;
  background: var(--azul-suave);
}

.icon-box svg,
.use-card svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: var(--azul-chispa);
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.checklist {
  display: grid;
  gap: 10px;
  margin: 24px 0 28px;
  padding: 0;
  list-style: none;
}

.checklist li {
  position: relative;
  padding-left: 30px;
  color: var(--tinta-marina);
  font-weight: 600;
  font-size: 16px;
}

/* Check azul dibujado con CSS */
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--azul-suave)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='m6 10.3 2.6 2.6L14 7.4' fill='none' stroke='%230B63F6' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")
    center / 20px no-repeat;
}

.service-card .card-tag {
  align-self: flex-start;
  margin-top: auto;              /* empuja la pastilla al fondo de la tarjeta */
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--azul-suave);
  color: var(--azul-chispa);
  font-size: 13px;
  font-weight: 600;
}

/* ==========================================================
   Cómo trabajamos
   ========================================================== */

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.step {
  position: relative;
}

/* Línea que une los pasos */
.step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 22px;
  left: 60px;
  right: -24px;
  height: 2px;
  background: linear-gradient(90deg, var(--azul-chispa), var(--borde));
}

.step-num {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 20px;
  border-radius: 50%;
  background: var(--azul-chispa);
  color: var(--blanco);
  font: 800 20px/1 var(--fuente-titulos);
  box-shadow: 0 0 0 6px var(--azul-suave);
}

.step h3 {
  font-size: 22px;
}

.step p {
  font-size: 16px;
}

/* ==========================================================
   Casos de uso
   ========================================================== */

.use-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.use-card {
  padding: 28px 24px;
  border: 1px solid var(--borde);
  border-radius: var(--radio-tarjeta);
  background: var(--blanco);
}

.use-card svg {
  margin-bottom: 16px;
}

.use-card h3 {
  font-size: 19px;
}

.use-card p {
  font-size: 15px;
}

/* ---------- Secciones en tablet y celular ---------- */

@media (max-width: 900px) {
  .section {
    padding: 80px 0;
  }

  .service-grid {
    grid-template-columns: 1fr;
  }

  .steps,
  .use-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .step:not(:last-child)::after {
    display: none;
  }
}

@media (max-width: 600px) {
  .section {
    padding: 64px 0;
  }

  .section-head {
    margin-bottom: 40px;
  }

  .section-head p:last-child {
    font-size: 17px;
  }

  .service-card {
    padding: 28px 22px;
  }

  .use-grid {
    grid-template-columns: 1fr;
  }

  /* Pasos en vertical, con la línea a la izquierda */
  .steps {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .step {
    padding: 0 0 32px 66px;
  }

  .step:last-child {
    padding-bottom: 0;
  }

  .step-num {
    position: absolute;
    left: 0;
    top: 0;
  }

  .step:not(:last-child)::after {
    display: block;
    top: 56px;
    bottom: 6px;
    left: 22px;
    right: auto;
    width: 2px;
    height: auto;
    background: linear-gradient(180deg, var(--azul-chispa), var(--borde));
  }

  .step h3 {
    padding-top: 8px;
  }
}

/* ==========================================================
   Contacto
   ========================================================== */

.contact-section {
  padding-top: 0;
}

.contact-block {
  padding: 80px 64px;
  border-radius: 32px;
  background:
    radial-gradient(70% 60% at 100% 100%, rgba(18, 181, 245, 0.35), transparent 70%),
    linear-gradient(140deg, var(--tinta-marina) 0%, #0B2D86 60%, var(--azul-chispa) 120%);
  box-shadow: 0 40px 80px -40px rgba(10, 24, 64, 0.6);
}

.section-head-dark h2 {
  color: var(--blanco);
}

.section-head-dark p:last-child {
  color: rgba(255, 255, 255, 0.78);
}

.section-head-dark .eyebrow {
  background: rgba(18, 181, 245, 0.16);
  color: #8FDCFF;
}

.contact-form {
  max-width: 760px;
  margin: 0 auto;
  padding: 36px;
  border-radius: var(--radio-tarjeta);
  background: var(--blanco);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.field-full {
  grid-column: 1 / -1;
}

.field label {
  display: block;
  margin-bottom: 6px;
  color: var(--tinta-marina);
  font-size: 15px;
  font-weight: 600;
}

.optional {
  color: var(--pizarra);
  font-weight: 400;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 50px;
  padding: 12px 14px;
  border: 1px solid #CBD5E6;
  border-radius: var(--radio-boton);
  background: var(--blanco);
  color: var(--tinta-marina);
  font: 400 16px/1.4 var(--fuente-texto);   /* 16px evita el zoom automático en iPhone */
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field textarea {
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--azul-chispa);
  box-shadow: 0 0 0 4px var(--azul-suave);
}

.field [aria-invalid="true"] {
  border-color: var(--error);
}

.field-hint,
.field-error {
  margin: 6px 0 0;
  font-size: 14px;
}

.field-error {
  color: var(--error);
  font-weight: 600;
}

/* Trampa para robots: fuera de la pantalla */
.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 24px;
}

.form-note {
  margin: 0;
  font-size: 14px;
}

.form-status {
  margin: 20px 0 0;
  padding: 14px 16px;
  border-radius: var(--radio-boton);
  background: var(--azul-suave);
  color: var(--tinta-marina);
  font-weight: 600;
}

.form-status[data-type="error"] {
  background: #FDEDE8;
  color: var(--error);
}

@media (max-width: 900px) {
  .contact-block {
    padding: 64px 24px;
  }
}

@media (max-width: 600px) {
  .contact-block {
    margin-inline: -8px;
    padding: 48px 16px 16px;
    border-radius: 24px;
  }

  .contact-form {
    padding: 22px 18px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .form-footer {
    flex-direction: column-reverse;
    align-items: stretch;
    text-align: center;
  }
}

/* ==========================================================
   Footer
   ========================================================== */

.footer {
  background: var(--tinta-marina);
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
}

.trust {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 40px;
  margin: 0;
  padding: 28px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  list-style: none;
}

.trust li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
}

.trust svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: var(--cian-electrico);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding: 64px 0;
}

.footer-brand p {
  max-width: 34ch;
  margin: 16px 0 0;
}

.logo-light {
  color: var(--blanco);
}

.logo-light span,
.logo-light .logo-bolt {
  color: var(--cian-electrico);
  fill: var(--cian-electrico);
}

.footer-col h2 {
  margin-bottom: 16px;
  color: var(--blanco);
  font: 600 13px/1 var(--fuente-texto);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.footer-col ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}

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

.footer :focus-visible {
  outline-color: var(--cian-electrico);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 80px 24px 0;     /* a la derecha: espacio para el botón flotante */
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 14px;
}

.footer-bottom p {
  margin: 0;
}

.lang-switch-dark {
  background: rgba(255, 255, 255, 0.08);
}

.lang-switch-dark > * {
  color: rgba(255, 255, 255, 0.7);
}

.lang-switch-dark [aria-current] {
  background: var(--blanco);
  color: var(--tinta-marina);
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

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

@media (max-width: 600px) {
  .trust {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 0;
  }

  /* deja espacio para que el botón flotante no tape el pie */
  .footer-bottom {
    padding-bottom: 96px;
  }
}

/* ==========================================================
   Botón flotante de WhatsApp
   ========================================================== */

.wa-float {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 40;
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--verde-whatsapp);
  box-shadow: 0 14px 30px -10px rgba(10, 24, 64, 0.5);
  transition: transform 0.15s;
}

.wa-float:hover {
  transform: scale(1.06);
}

.wa-float svg {
  width: 30px;
  height: 30px;
  fill: var(--blanco);
}

.wa-float .wa-float-dots {
  fill: none;
  stroke: var(--verde-whatsapp);
  stroke-width: 2.4;
  stroke-linecap: round;
}