/* ==========================================
   INGENR Components — components.css
   Navbar, Cards, Buttons, KPIs, Form, Footer
   ========================================== */

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-8);
  z-index: var(--z-navbar);
  background: transparent;
  transition: background var(--transition-base),
              box-shadow var(--transition-base),
              backdrop-filter var(--transition-base);
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  z-index: 2;
}

.navbar__logo-icon {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.navbar__logo-text {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: var(--tracking-tight);
}

.navbar__logo-text span {
  color: var(--accent);
}

.navbar__nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.navbar__link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  position: relative;
  padding: var(--space-2) 0;
  transition: color var(--transition-fast);
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition-base);
}

.navbar__link:hover,
.navbar__link--active {
  color: var(--text-primary);
}

.navbar__link:hover::after,
.navbar__link--active::after {
  width: 100%;
}

.navbar__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

/* Mobile hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 2;
  padding: var(--space-2);
}

.navbar__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.navbar__hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar__hamburger.active span:nth-child(2) {
  opacity: 0;
}

.navbar__hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu */
@media (max-width: 768px) {
  .navbar {
    padding: 0 var(--space-5);
  }

  .navbar__hamburger {
    display: flex;
  }

  .navbar__nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 360px;
    height: 100vh;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: var(--space-12) var(--space-8);
    gap: var(--space-6);
    background: rgba(10, 25, 47, 0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    transition: right var(--transition-slow);
    border-left: var(--border-subtle);
  }

  .navbar__nav.open {
    right: 0;
  }

  .navbar__link {
    font-size: var(--text-lg);
  }

  .navbar__cta {
    width: 100%;
  }

  .navbar__cta .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    background var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  white-space: nowrap;
}

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

.btn--primary {
  background: var(--accent);
  color: var(--primary-bg);
  box-shadow: var(--shadow-accent);
}

.btn--primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent-lg);
  color: var(--primary-bg);
}

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

.btn--secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.btn--secondary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px var(--accent-glow);
  color: var(--accent);
}

.btn--ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid rgba(93, 126, 150, 0.3);
}

.btn--ghost:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
  background: var(--surface-glass);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn--icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* ===== CARDS ===== */
.card {
  background: var(--surface-glass);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
  border-color: rgba(200, 134, 46, 0.25);
}

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

.card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background: var(--accent-light);
  margin-bottom: var(--space-5);
  color: var(--accent);
  transition: background var(--transition-base), transform var(--transition-base);
}

.card:hover .card__icon {
  background: var(--accent-glow);
  transform: scale(1.05);
}

.card__icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 1.5;
}

.card__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.card__text {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--text-muted);
}

.card__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.card__list li {
  position: relative;
  padding-left: var(--space-4);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--text-muted);
}

.card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: var(--radius-full);
  background: var(--accent);
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-5);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  transition: gap var(--transition-base);
}

.card__link:hover {
  gap: var(--space-3);
}

.card__link svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  transition: transform var(--transition-base);
}

.card__link:hover svg {
  transform: translateX(4px);
}

/* ===== SERVICE TILES (Catálogo de Servicios) ===== */
.services-grid {
  align-items: start;
}

.service-tile {
  background: var(--surface-glass);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.service-tile:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
  border-color: rgba(200, 134, 46, 0.25);
}

.service-tile__summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-8) var(--space-6);
}

.service-tile__summary::-webkit-details-marker {
  display: none;
}

.service-tile__summary::marker {
  content: '';
}

.service-tile__summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.service-tile__icon {
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-5);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xl);
  background: var(--accent-light);
  border: 1px solid rgba(200, 134, 46, 0.15);
  transition: background var(--transition-base), transform var(--transition-base);
}

.service-tile:hover .service-tile__icon {
  background: var(--accent-glow);
  transform: scale(1.05);
}

.service-tile__icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 1.5;
}

.service-tile__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.service-tile__hint {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.service-tile__summary:hover .service-tile__hint {
  color: var(--accent);
}

.service-tile__chevron {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2.5;
  transition: transform var(--transition-base);
}

.service-tile[open] .service-tile__chevron {
  transform: rotate(180deg);
}

.service-tile__body {
  padding: 0 var(--space-6) var(--space-8);
}

.service-tile__body .card__list {
  margin-top: 0;
  text-align: left;
}

/* ===== STACK TAGS (Metodologías y Plataformas) ===== */
.stack-groups {
  display: grid;
  gap: var(--space-8);
}

.stack-group__title {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--accent);
  margin-bottom: var(--space-4);
}

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

.stack-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background: var(--surface-glass);
  border: var(--border-subtle);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-family: var(--font-body);
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast),
    background var(--transition-fast);
}

.stack-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

/* ===== CLIENTS CAROUSEL ===== */
.clients-bar {
  padding: var(--space-10) 0 var(--space-12);
  overflow: hidden;
}

.clients-bar__label {
  text-align: center;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--text-muted);
  margin-bottom: var(--space-8);
}

.clients-carousel {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.clients-carousel__track {
  display: flex;
  align-items: center;
  width: max-content;
  animation: clients-scroll 90s linear infinite;
}

.clients-carousel:hover .clients-carousel__track {
  animation-play-state: paused;
}

/* Cada logo se muestra sobre una "ficha" blanca para que se lea bien
   sobre el fondo oscuro, sin importar el color original del logo. */
.clients-carousel__logo {
  flex-shrink: 0;
  box-sizing: border-box;
  width: 148px;
  height: 76px;
  margin-right: var(--space-6);
  object-fit: contain;
  background: #fff;
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  box-shadow: var(--shadow-sm);
  opacity: 0.92;
  transition: opacity var(--transition-base), transform var(--transition-base),
    box-shadow var(--transition-base);
}

.clients-carousel__logo:hover {
  opacity: 1;
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

@keyframes clients-scroll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

@media (max-width: 480px) {
  .clients-carousel__logo {
    width: 124px;
    height: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .clients-carousel {
    -webkit-mask-image: none;
    mask-image: none;
  }

  .clients-carousel__track {
    animation: none;
    width: auto;
    flex-wrap: wrap;
    justify-content: center;
    row-gap: var(--space-4);
  }
}

/* ===== KPI COUNTERS ===== */
.kpi-bar {
  background: var(--primary-bg-light);
  border-top: var(--border-subtle);
  border-bottom: var(--border-subtle);
  padding: var(--space-12) 0;
}

.kpi-bar__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-8);
}

.kpi-item {
  text-align: center;
  position: relative;
}

.kpi-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 48px;
  width: 1px;
  background: rgba(93, 126, 150, 0.2);
}

.kpi-item__number {
  font-family: var(--font-heading);
  font-size: var(--text-5xl);
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.kpi-item__prefix,
.kpi-item__suffix {
  font-size: var(--text-3xl);
  font-weight: 700;
}

.kpi-item__label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

@media (max-width: 768px) {
  .kpi-bar__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }

  .kpi-item:nth-child(2)::after {
    display: none;
  }

  .kpi-item__number {
    font-size: var(--text-4xl);
  }
}

@media (max-width: 480px) {
  .kpi-bar__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .kpi-item::after {
    display: none !important;
  }
}

/* ===== TEAM CARDS ===== */
.team-card {
  text-align: center;
  background: var(--surface-glass);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}

.team-card__image {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  filter: grayscale(100%);
  transition: filter var(--transition-slow);
}

.team-card:hover .team-card__image {
  filter: grayscale(0%);
}

/* Fotos de equipo pre-recortadas en circulo (fondo transparente) */
.team-card__photo {
  width: 100%;
  max-width: 220px;
  aspect-ratio: 1 / 1;
  margin: var(--space-6) auto 0;
  border-radius: var(--radius-full);
  overflow: hidden;
  background: linear-gradient(135deg, rgba(93, 126, 150, 0.15), rgba(200, 134, 46, 0.08));
  border: 2px solid rgba(200, 134, 46, 0.25);
  box-shadow: var(--shadow-md);
}

.team-card__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(85%);
  transition: filter var(--transition-slow), transform var(--transition-slow);
}

.team-card:hover .team-card__photo img {
  filter: grayscale(0%);
  transform: scale(1.04);
}

.team-card__info {
  padding: var(--space-5) var(--space-4);
}

.team-card__name {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.team-card__role {
  font-size: var(--text-sm);
  color: var(--accent);
  margin-bottom: var(--space-3);
}

.team-card__linkedin {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(93, 126, 150, 0.3);
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.team-card__linkedin:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

.team-card__linkedin svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* ===== FORM COMPONENTS ===== */
.form-group {
  margin-bottom: var(--space-5);
}

/* Honeypot anti-spam: fuera de pantalla, inaccesible para personas */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-label {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
  letter-spacing: var(--tracking-wide);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: rgba(10, 25, 47, 0.6);
  border: 1px solid rgba(93, 126, 150, 0.25);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--text-base);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-fast);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(140, 141, 143, 0.5);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: rgba(93, 126, 150, 0.4);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: rgba(10, 25, 47, 0.8);
}

.form-input--error,
.form-textarea--error {
  border-color: var(--error);
  box-shadow: 0 0 0 3px var(--error-bg);
}

.form-input--valid,
.form-textarea--valid {
  border-color: var(--success);
  box-shadow: 0 0 0 3px var(--success-bg);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238C8D8F' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
  cursor: pointer;
}

.form-select option {
  background: var(--primary-bg);
  color: var(--text-primary);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: var(--leading-relaxed);
}

/* iOS hace zoom automático al enfocar un input con font-size menor a 16px.
   Como <html> reduce su tamaño base en mobile, fijamos 16px reales aquí. */
@media (max-width: 768px) {

  .form-input,
  .form-select,
  .form-textarea {
    font-size: 16px;
  }
}

.form-hint {
  display: block;
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

.form-error {
  display: none;
  font-size: var(--text-xs);
  color: var(--error);
  margin-top: var(--space-1);
}

.form-error.visible {
  display: block;
}

/* Error general de envío (fallo del servidor / red) */
.form-submit-error {
  display: none;
  margin-bottom: var(--space-4);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--error);
  background: var(--error-bg);
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: var(--radius-md);
}

.form-submit-error.visible {
  display: block;
}

/* Radio group */
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.radio-option {
  position: relative;
}

.radio-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.radio-option label {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  border: 1px solid rgba(93, 126, 150, 0.25);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.radio-option label:hover {
  border-color: var(--accent);
  color: var(--text-primary);
}

.radio-option input[type="radio"]:checked + label {
  background: var(--accent-light);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 500;
}

.radio-option input[type="radio"]:focus-visible + label {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Checkbox */
.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.checkbox-group input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  min-width: 20px;
  border: 1px solid rgba(93, 126, 150, 0.4);
  border-radius: var(--radius-sm);
  background: rgba(10, 25, 47, 0.6);
  cursor: pointer;
  position: relative;
  margin-top: 2px;
  transition: all var(--transition-fast);
}

.checkbox-group input[type="checkbox"]:checked {
  background: var(--accent);
  border-color: var(--accent);
}

.checkbox-group input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 6px;
  width: 5px;
  height: 10px;
  border: solid var(--primary-bg);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.checkbox-group label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  cursor: pointer;
  line-height: var(--leading-normal);
}

.checkbox-group a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.checkbox-group.error input[type="checkbox"] {
  border-color: var(--error);
}

.form-consent-note {
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
}

.form-consent-note a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Submit Button States */
.btn--submit {
  width: 100%;
  padding: var(--space-4);
  font-size: var(--text-base);
  position: relative;
  overflow: hidden;
  min-height: 52px;
}

.btn--submit.loading {
  pointer-events: none;
  background: rgba(200, 134, 46, 0.6);
}

.btn--submit.success {
  background: var(--success);
  pointer-events: none;
}

.btn--submit .btn__text,
.btn--submit .btn__spinner,
.btn--submit .btn__success {
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.btn--submit .btn__spinner,
.btn--submit .btn__success {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
}

.btn--submit.loading .btn__text { opacity: 0; transform: translateY(10px); }
.btn--submit.loading .btn__spinner { opacity: 1; }

.btn--submit.success .btn__text { opacity: 0; transform: translateY(10px); }
.btn--submit.success .btn__success { opacity: 1; }

/* ===== FOOTER ===== */
.footer {
  background: var(--surface-dark);
  border-top: var(--border-subtle);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-10);
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-8);
}

.footer__brand {
  max-width: 300px;
}

.footer__logo-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  margin-bottom: var(--space-4);
}

.footer__logo-text {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--text-primary);
}

.footer__logo-text span {
  color: var(--accent);
}

.footer__desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
}

.footer__legal-id {
  margin-top: var(--space-4);
  font-style: normal;
  font-size: var(--text-xs);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
}

.footer__legal-id strong {
  color: var(--text-primary);
}

.footer__heading {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin-bottom: var(--space-5);
}

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

.footer__link {
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer__link:hover {
  color: var(--accent);
  padding-left: var(--space-2);
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.footer__contact-item a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer__contact-item svg {
  width: 18px;
  height: 18px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 1.5;
  flex-shrink: 0;
  margin-top: 2px;
}

.footer__bottom {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: var(--space-6) var(--space-8) 0;
  margin-top: var(--space-10);
  border-top: var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__copyright {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

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

.footer__social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(93, 126, 150, 0.2);
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.footer__social-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

.footer__social-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.footer__social-link--text {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0;
}

.footer__credentials {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.footer__credential {
  font-size: var(--text-xs);
  color: var(--text-muted);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  border: var(--border-subtle);
  background: var(--surface-glass);
  white-space: nowrap;
}

/* ===== FOOTER — ENDORSEMENTS (Certificaciones / Organismos) ===== */
.footer__endorsements {
  max-width: var(--container-xl);
  margin: var(--space-12) auto 0;
  padding: var(--space-10) var(--space-8) 0;
  border-top: var(--border-subtle);
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-10);
}

.footer__endorsement-group .footer__heading {
  margin-bottom: var(--space-4);
}

.footer__logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.footer__logo-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 56px;
  width: 76px;
  padding: var(--space-2);
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.footer__logo-badge:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent);
}

.footer__logo-badge img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  justify-content: center;
}

.footer__legal-link {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

@media (max-width: 900px) {
  .footer__endorsements {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 480px) {
  .footer__endorsements {
    padding-left: var(--space-5);
    padding-right: var(--space-5);
  }

  .footer__logo-badge {
    height: 48px;
    width: 60px;
    padding: 6px;
  }

  .footer__logos {
    gap: var(--space-2);
  }
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

  .footer__brand {
    grid-column: span 2;
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }

  .footer__brand {
    grid-column: span 1;
  }
}