/* ==========================================================================
   ANSELTRONICA — Componentes de interfaz
   Botones · navegación · tarjetas · insignias · formularios · pie de página
   ========================================================================== */

/* ================================================================ botones */

.btn {
  --btn-bg: transparent;
  --btn-fg: var(--c-text);
  --btn-bd: var(--c-border-strong);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.9rem 1.55rem;
  min-height: 3rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.005em;
  line-height: 1;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1px solid var(--btn-bd);
  border-radius: var(--r-pill);
  text-align: center;
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  transition:
    transform var(--t-base) var(--ease-out),
    box-shadow var(--t-base) var(--ease-out),
    border-color var(--t-base) var(--ease-out),
    background-color var(--t-base) var(--ease-out),
    color var(--t-base) var(--ease-out);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn__icon {
  flex: none;
  width: 1.15rem;
  height: 1.15rem;
  transition: transform var(--t-base) var(--ease-out);
}

.btn:hover .btn__icon--arrow {
  transform: translateX(3px);
}

.btn--primary {
  --btn-fg: #1a2413;
  background: var(--grad-accent);
  border-color: transparent;
  box-shadow: var(--sh-glow-primary);
}

.btn--primary::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(120deg, #d9f99d, var(--c-accent) 60%, var(--c-primary-soft));
  opacity: 0;
  transition: opacity var(--t-base) var(--ease-out);
}

.btn--primary:hover {
  box-shadow: 0 22px 54px -18px rgba(132, 204, 22, 0.6);
}

.btn--primary:hover::after {
  opacity: 1;
}

.btn--solid {
  --btn-fg: #ffffff;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-deep) 100%);
  border-color: transparent;
  box-shadow: var(--sh-glow-primary);
}

.btn--solid:hover {
  background: linear-gradient(135deg, #65a30d 0%, var(--c-primary) 100%);
}

.btn--outline {
  --btn-bg: rgba(58, 82, 32, 0.05);
  border-color: var(--c-border-strong);
}

.btn--outline:hover {
  --btn-bg: rgba(132, 204, 22, 0.09);
  border-color: var(--c-border-accent);
  box-shadow: 0 16px 40px -20px rgba(132, 204, 22, 0.5);
}

.btn--ghost {
  --btn-bd: transparent;
  --btn-fg: var(--c-text-soft);
  padding-inline: 1.1rem;
}

.btn--ghost:hover {
  --btn-fg: var(--c-accent);
  --btn-bg: rgba(132, 204, 22, 0.08);
}

.btn--sm {
  min-height: 2.5rem;
  padding: 0.65rem 1.15rem;
  font-size: 0.875rem;
}

.btn--lg {
  min-height: 3.5rem;
  padding: 1.05rem 2.1rem;
  font-size: 1rem;
}

.btn--block {
  width: 100%;
}

.btn--whatsapp {
  --btn-bg: rgba(22, 163, 74, 0.1);
  --btn-fg: #15803d;
  --btn-bd: rgba(22, 163, 74, 0.32);
}

.btn--whatsapp:hover {
  --btn-bg: rgba(22, 163, 74, 0.18);
}

.btn[disabled],
.btn[aria-disabled='true'] {
  opacity: 0.55;
  pointer-events: none;
}

/* Enlace con flecha */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--c-accent);
  transition: gap var(--t-base) var(--ease-out), color var(--t-base) var(--ease-out);
}

.link-arrow:hover {
  gap: 0.8rem;
  color: var(--c-accent-soft);
}

.link-arrow svg {
  width: 1rem;
  height: 1rem;
}

/* ================================================================ insignias */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-soft);
  background: rgba(58, 82, 32, 0.07);
  border: 1px solid var(--c-border);
  border-radius: var(--r-pill);
  white-space: nowrap;
}

.badge--accent {
  color: var(--c-accent-soft);
  background: rgba(132, 204, 22, 0.1);
  border-color: rgba(132, 204, 22, 0.28);
}

.badge--energy {
  color: #b45309;
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.28);
}

.badge--flag {
  gap: 0.4rem;
}

.badge__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-success);
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.18);
  animation: pulse-soft 2.6s var(--ease-in-out) infinite;
}

/* ============================================================ encabezado */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: var(--z-header);
  transition:
    background-color var(--t-base) var(--ease-out),
    border-color var(--t-base) var(--ease-out),
    backdrop-filter var(--t-base) var(--ease-out),
    transform var(--t-slow) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.site-header.is-stuck {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-bottom-color: var(--c-border);
  box-shadow: 0 18px 40px -34px rgba(24, 40, 12, 0.12);
}

.site-header.is-hidden {
  transform: translateY(-104%);
}

/* Barra superior de progreso de lectura */
.scroll-progress {
  position: absolute;
  inset: auto 0 -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-accent), var(--c-primary));
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 120ms linear;
}

.header__inner {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 0.45rem + 1vw, 1.25rem);
  min-height: var(--header-h);
}

/* ------------------------------------------------------------- marca/logo */

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  flex: none;
  padding-block: 0.4rem;
}

.brand__mark {
  width: 2.5rem;
  height: 2.5rem;
  flex: none;
  filter: drop-shadow(0 6px 16px rgba(132, 204, 22, 0.32));
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-text);
}

.brand__tag {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--c-accent);
  opacity: 0.9;
}

/* El descriptor de la marca sólo aparece cuando el encabezado tiene holgura:
   en el resto de anchos la portada ya lo muestra en gran tamaño. */
@media (max-width: 89.999rem) {
  .brand__tag {
    display: none;
  }
}

/* --------------------------------------------------------- menú principal */

.nav {
  margin-inline: auto;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 0.1rem;
}

.nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.55rem 0.45rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--c-text-soft);
  border-radius: var(--r-sm);
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease-out), background-color var(--t-fast) var(--ease-out);
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--c-text);
  background: rgba(58, 82, 32, 0.07);
}

.nav__link.is-active {
  color: var(--c-primary);
}

.nav__link::after {
  content: '';
  position: absolute;
  inset: auto 0.45rem 0.28rem;
  height: 1.5px;
  background: var(--grad-accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform var(--t-base) var(--ease-out);
}

.nav__link:hover::after,
.nav__link.is-active::after {
  transform: scaleX(1);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: none;
}

.header__phone {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--c-text-soft);
  transition: color var(--t-fast) var(--ease-out);
}

.header__phone:hover {
  color: var(--c-accent);
}

.header__phone svg {
  width: 1rem;
  height: 1rem;
}

/* En pantallas estrechas la llamada a la acción del encabezado queda como
   icono: el texto completo ya aparece en la barra inferior y en la portada. */
@media (max-width: 32rem) {
  .header__cta-label {
    display: none;
  }

  .header__cta {
    padding-inline: 0.85rem;
  }
}

@media (max-width: 21rem) {
  .header__cta {
    display: none;
  }

  .brand__mark {
    width: 2.15rem;
    height: 2.15rem;
  }

  .brand__name {
    font-size: 0.9375rem;
  }
}

/* ------------------------------------------------------ botón hamburguesa */

.nav-toggle {
  display: none;
  width: 2.85rem;
  height: 2.85rem;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--c-border-strong);
  border-radius: var(--r-sm);
  background: rgba(58, 82, 32, 0.05);
}

.nav-toggle__bars {
  position: relative;
  width: 1.15rem;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: background-color var(--t-fast) var(--ease-out);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform var(--t-base) var(--ease-out);
}

.nav-toggle__bars::before {
  top: -6px;
}
.nav-toggle__bars::after {
  top: 6px;
}

.nav-toggle[aria-expanded='true'] .nav-toggle__bars {
  background: transparent;
}

.nav-toggle[aria-expanded='true'] .nav-toggle__bars::before {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded='true'] .nav-toggle__bars::after {
  transform: translateY(-6px) rotate(-45deg);
}

/* ------------------------------------------------------- menú responsive */
/* La navegación en línea necesita ~1280 px: hasta ahí se usa el panel lateral. */
@media (max-width: 79.999rem) {
  .nav-toggle {
    display: inline-flex;
  }

  .header__phone {
    display: none;
  }

  .header__actions .btn--solid {
    display: none;
  }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 0;
    z-index: var(--z-drawer);
    margin: 0;
    padding: var(--sp-6) var(--gutter) var(--sp-8);
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    overflow-y: auto;
    overscroll-behavior: contain;
    transform: translateX(100%);
    visibility: hidden;
    transition:
      transform var(--t-slow) var(--ease-out),
      visibility var(--t-slow);
  }

  .nav.is-open {
    transform: none;
    visibility: visible;
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
  }

  .nav__link {
    justify-content: space-between;
    padding: 1rem 1.1rem;
    font-size: 1.0625rem;
    border-radius: var(--r-md);
    border: 1px solid transparent;
  }

  .nav__link::after {
    inset: auto 1.1rem 0.35rem;
  }

  .nav__link.is-active {
    border-color: var(--c-border);
    background: rgba(132, 204, 22, 0.06);
  }

  .nav__cta {
    display: flex;
    flex-direction: column;
    gap: var(--sp-3);
    margin-top: var(--sp-6);
    padding-top: var(--sp-6);
    border-top: 1px solid var(--c-border);
  }

  .nav__cta .btn {
    width: 100%;
  }
}

/* Navegación en línea: sólo cuando hay ancho suficiente para todos los enlaces */
@media (min-width: 80rem) {
  .nav__cta {
    display: none;
  }
}

/* El teléfono del encabezado se muestra únicamente en pantallas muy anchas */
@media (max-width: 89.999rem) {
  .header__phone {
    display: none;
  }
}

/* ================================================================= tarjetas */

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  padding: clamp(1.35rem, 0.9rem + 1.2vw, 1.9rem);
  background: linear-gradient(180deg, rgba(244, 248, 233, 0.6), rgba(255, 255, 255, 0.82));
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition:
    transform var(--t-base) var(--ease-out),
    border-color var(--t-base) var(--ease-out),
    box-shadow var(--t-base) var(--ease-out);
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  background: var(--grad-surface);
  transition: opacity var(--t-base) var(--ease-out);
  pointer-events: none;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--c-border-accent);
  box-shadow: var(--sh-lg);
}

.card:hover::before {
  opacity: 1;
}

.card > * {
  position: relative;
}

.card__title {
  font-size: var(--fs-h4);
  font-weight: 600;
}

.card__text {
  font-size: 0.9375rem;
  color: var(--c-text-soft);
  line-height: 1.65;
}

.card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-3);
  margin-bottom: var(--sp-1);
}

/* Icono técnico en caja */
.icon-tile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  flex: none;
  color: var(--c-accent);
  background: linear-gradient(150deg, rgba(132, 204, 22, 0.14), rgba(101, 163, 13, 0.08));
  border: 1px solid rgba(132, 204, 22, 0.22);
  border-radius: var(--r-md);
  transition:
    color var(--t-base) var(--ease-out),
    border-color var(--t-base) var(--ease-out),
    transform var(--t-base) var(--ease-out);
}

.icon-tile svg {
  width: 1.5rem;
  height: 1.5rem;
}

.card:hover .icon-tile {
  color: var(--c-accent-soft);
  border-color: var(--c-border-accent);
  transform: translateY(-2px);
}

.icon-tile--sm {
  width: 2.35rem;
  height: 2.35rem;
  border-radius: var(--r-sm);
}

.icon-tile--sm svg {
  width: 1.15rem;
  height: 1.15rem;
}

.icon-tile--lg {
  width: 3.75rem;
  height: 3.75rem;
  border-radius: var(--r-lg);
}

.icon-tile--lg svg {
  width: 1.9rem;
  height: 1.9rem;
}

.icon-tile--energy {
  color: var(--c-energy);
  background: linear-gradient(150deg, rgba(245, 158, 11, 0.14), rgba(245, 158, 11, 0.04));
  border-color: rgba(245, 158, 11, 0.24);
}

.icon-tile--solid {
  color: #1a2413;
  background: var(--grad-accent);
  border-color: transparent;
}

/* Numeración técnica de tarjetas */
.card__index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
}

/* Lista con viñetas técnicas */
.ticks {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.ticks li {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  font-size: 0.9375rem;
  color: var(--c-text-soft);
  line-height: 1.55;
}

.ticks li svg {
  flex: none;
  width: 1.1rem;
  height: 1.1rem;
  margin-top: 0.28rem;
  color: var(--c-accent);
}

.ticks strong {
  color: var(--c-text);
  font-weight: 600;
}

.ticks--lg li {
  font-size: 1rem;
  gap: 1rem;
}

.ticks--columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  gap: 0.85rem 2rem;
}

/* ============================================================ formularios */

.form {
  display: grid;
  gap: var(--sp-4);
}

@media (min-width: 40rem) {
  .form__row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--sp-4);
  }
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.field__label {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--c-text-soft);
}

.field__req {
  color: var(--c-accent);
}

.field__control {
  width: 100%;
  padding: 0.85rem 1rem;
  color: var(--c-text);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--c-border-strong);
  border-radius: var(--r-sm);
  font-size: 0.9375rem;
  transition:
    border-color var(--t-fast) var(--ease-out),
    box-shadow var(--t-fast) var(--ease-out),
    background-color var(--t-fast) var(--ease-out);
}

.field__control::placeholder {
  color: var(--c-text-muted);
}

.field__control:hover {
  border-color: rgba(58, 82, 32, 0.4);
}

.field__control:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.92);
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(132, 204, 22, 0.16);
}

textarea.field__control {
  min-height: 8rem;
  resize: vertical;
}

select.field__control {
  appearance: none;
  padding-right: 2.6rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236f7d5e' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  background-size: 1.05rem;
}

select.field__control option {
  background: #ffffff;
  color: var(--c-text);
}

.field__hint {
  font-size: 0.8125rem;
  color: var(--c-text-muted);
}

.field__error {
  display: none;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  color: var(--c-danger);
}

.field__error svg {
  width: 0.95rem;
  height: 0.95rem;
  flex: none;
}

.field.has-error .field__control {
  border-color: var(--c-danger);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.14);
}

.field.has-error .field__error {
  display: flex;
}

/* Consentimiento */
.consent {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  font-size: 0.8125rem;
  color: var(--c-text-muted);
  line-height: 1.55;
}

.consent input {
  flex: none;
  width: 1.1rem;
  height: 1.1rem;
  margin-top: 0.15rem;
  accent-color: var(--c-accent);
}

.form__status {
  display: none;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 1rem 1.15rem;
  font-size: 0.9rem;
  border-radius: var(--r-md);
  border: 1px solid transparent;
}

.form__status svg {
  flex: none;
  width: 1.2rem;
  height: 1.2rem;
  margin-top: 0.15rem;
}

.form__status.is-visible {
  display: flex;
}

.form__status--ok {
  color: #15803d;
  background: rgba(22, 163, 74, 0.1);
  border-color: rgba(22, 163, 74, 0.32);
}

.form__status--error {
  color: #b91c1c;
  background: rgba(220, 38, 38, 0.1);
  border-color: rgba(220, 38, 38, 0.3);
}

/* ================================================================ pie */

.site-footer {
  position: relative;
  padding-top: clamp(3.5rem, 2.5rem + 4vw, 6rem);
  background:
    radial-gradient(ellipse 70% 60% at 12% 100%, rgba(132, 204, 22, 0.14), transparent 70%),
    linear-gradient(180deg, rgba(244, 248, 233, 0) 0%, rgba(244, 248, 233, 0.75) 32%, #f4f8e9 100%);
  border-top: 1px solid var(--c-border);
}

.footer__grid {
  display: grid;
  gap: clamp(2rem, 1rem + 3vw, 3.5rem);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  padding-bottom: var(--sp-9);
}

.footer__brand {
  max-width: 24rem;
}

.footer__brand .brand {
  margin-bottom: var(--sp-4);
}

.footer__about {
  font-size: 0.9rem;
  color: var(--c-text-soft);
  line-height: 1.68;
}

.footer__title {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: var(--sp-4);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.footer__list a,
.footer__list span {
  font-size: 0.9rem;
  color: var(--c-text-soft);
  transition: color var(--t-fast) var(--ease-out);
}

.footer__list a:hover {
  color: var(--c-accent);
}

.footer__contact li {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  font-size: 0.9rem;
  color: var(--c-text-soft);
}

.footer__contact svg {
  flex: none;
  width: 1.05rem;
  height: 1.05rem;
  margin-top: 0.25rem;
  color: var(--c-accent);
}

.footer__contact a:hover {
  color: var(--c-accent);
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding-block: var(--sp-5);
  border-top: 1px solid var(--c-border);
  font-size: 0.8125rem;
  color: var(--c-text-muted);
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
}

.footer__legal a:hover {
  color: var(--c-accent);
}

.footer__meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

/* ======================================================= botón "arriba" */

.to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: var(--z-sticky);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.9rem;
  height: 2.9rem;
  color: var(--c-text);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--c-border-strong);
  border-radius: 50%;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--sh-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition:
    opacity var(--t-base) var(--ease-out),
    transform var(--t-base) var(--ease-out),
    visibility var(--t-base),
    border-color var(--t-base) var(--ease-out);
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover {
  border-color: var(--c-border-accent);
  color: var(--c-accent);
}

.to-top svg {
  width: 1.15rem;
  height: 1.15rem;
}

/* ============================================== barra de acción móvil */

.mobile-cta {
  position: fixed;
  inset: auto 0 0;
  z-index: var(--z-sticky);
  display: none;
  gap: 0.6rem;
  padding: 0.7rem var(--gutter) calc(0.7rem + env(safe-area-inset-bottom, 0px));
  background: rgba(255, 255, 255, 0.94);
  border-top: 1px solid var(--c-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transform: translateY(110%);
  transition: transform var(--t-slow) var(--ease-out);
}

.mobile-cta.is-visible {
  transform: none;
}

.mobile-cta .btn {
  flex: 1;
}

@media (max-width: 40rem) {
  .mobile-cta {
    display: flex;
  }

  .to-top {
    bottom: 5.4rem;
  }

  body {
    padding-bottom: 4.6rem;
  }
}

/* ======================================================== píldora/aviso */

.notice {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.2rem;
  font-size: 0.875rem;
  color: var(--c-text-soft);
  background: rgba(58, 82, 32, 0.05);
  border: 1px solid var(--c-border);
  border-left: 2px solid var(--c-accent);
  border-radius: var(--r-sm);
  line-height: 1.6;
}

.notice svg {
  flex: none;
  width: 1.15rem;
  height: 1.15rem;
  margin-top: 0.15rem;
  color: var(--c-accent);
}

/* =============================================================== pestañas */

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0.35rem;
  background: rgba(58, 82, 32, 0.05);
  border: 1px solid var(--c-border);
  border-radius: var(--r-pill);
}

.tab {
  padding: 0.55rem 1.05rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--c-text-soft);
  border-radius: var(--r-pill);
  transition:
    color var(--t-fast) var(--ease-out),
    background-color var(--t-fast) var(--ease-out);
}

.tab:hover {
  color: var(--c-text);
}

.tab[aria-selected='true'] {
  color: #1a2413;
  background: var(--grad-accent);
  font-weight: 600;
}

@media (max-width: 40rem) {
  .tabs {
    border-radius: var(--r-lg);
    justify-content: flex-start;
  }
}

/* ========================================================== acordeón FAQ */

.accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.accordion__item {
  background: linear-gradient(180deg, rgba(244, 248, 233, 0.5), rgba(255, 255, 255, 0.75));
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: border-color var(--t-base) var(--ease-out);
}

.accordion__item[open] {
  border-color: var(--c-border-accent);
}

.accordion__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: 1.1rem 1.3rem;
  font-family: var(--font-display);
  font-size: var(--fs-h4);
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

.accordion__summary::-webkit-details-marker {
  display: none;
}

.accordion__summary svg {
  flex: none;
  width: 1.2rem;
  height: 1.2rem;
  color: var(--c-accent);
  transition: transform var(--t-base) var(--ease-out);
}

.accordion__item[open] .accordion__summary svg {
  transform: rotate(45deg);
}

.accordion__body {
  padding: 0 1.3rem 1.3rem;
  color: var(--c-text-soft);
  font-size: 0.9375rem;
  line-height: 1.68;
}

/* ================================================================ tooltip */

.tip {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.1rem;
  height: 1.1rem;
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--c-accent);
  border: 1px solid var(--c-border-strong);
  border-radius: 50%;
  cursor: help;
}

.tip__body {
  position: absolute;
  bottom: calc(100% + 0.5rem);
  left: 50%;
  width: max-content;
  max-width: 16rem;
  padding: 0.6rem 0.75rem;
  font-family: var(--font-body);
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--c-text);
  background: var(--c-surface-3);
  border: 1px solid var(--c-border-strong);
  border-radius: var(--r-sm);
  box-shadow: var(--sh-lg);
  transform: translate(-50%, 4px);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--t-fast) var(--ease-out),
    transform var(--t-fast) var(--ease-out),
    visibility var(--t-fast);
  z-index: 5;
}

.tip:hover .tip__body,
.tip:focus-visible .tip__body {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}