/* ============================================================
   INSEIN SRL — Sprint 4 CSS
   Validación de formulario, mejoras de UX en contacto,
   estado de envío animado, WhatsApp mejorado
   ============================================================ */

/* ── Estilos de error en campo ── */
.form-control.error {
  border-color: #ff4d4d !important;
  box-shadow: 0 0 0 3px rgba(255, 77, 77, 0.12) !important;
}

.field-error {
  display: block;
  font-size: 0.68rem;
  color: #ff4d4d;
  margin-top: 5px;
  letter-spacing: 0.04em;
  font-weight: 500;
}

/* ── Botón submit con estado de carga ── */
#form-submit {
  position: relative;
  overflow: hidden;
  transition: background var(--transition), opacity var(--transition);
}

#form-submit:disabled {
  opacity: 0.75;
  cursor: not-allowed;
}

#form-submit:disabled::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: -100%;
  height: 2px;
  width: 100%;
  background: rgba(13, 15, 18, 0.3);
  animation: loadingBar 1.6s ease infinite;
}

@keyframes loadingBar {
  0%   { left: -100%; width: 60%; }
  100% { left: 150%; width: 60%; }
}

/* ── Mensaje de estado mejorado ── */
.form-status {
  min-height: 36px;
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 0.78rem;
  font-weight: 600;
  text-align: center;
  transition: all 0.3s ease;
}

.form-status.success {
  background: rgba(110, 214, 14, 0.1);
  border: 1px solid rgba(110, 214, 14, 0.3);
  color: var(--green);
}

.form-status.error {
  background: rgba(255, 77, 77, 0.08);
  border: 1px solid rgba(255, 77, 77, 0.25);
  color: #ff4d4d;
}

/* ── WhatsApp flotante mejorado ── */
.whatsapp-float {
  bottom: 28px;
  right: 28px;
  box-shadow: 0 4px 24px rgba(37, 211, 102, 0.3);
}

/* Tooltip al hacer hover */
.whatsapp-float::before {
  content: attr(data-tooltip);
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: rgba(13, 15, 18, 0.92);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 600;
  white-space: nowrap;
  padding: 6px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border-dim);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
  backdrop-filter: blur(8px);
}

.whatsapp-float:hover::before {
  opacity: 1;
}

/* ── Nav link "Equipo" agregado ── */
.nav-links .nav-link[href="#equipo"],
.nav-mobile .nav-mobile-link[href="#equipo"] {
  /* Hereda estilos normales, no necesita override */
}

/* ── Mejora: form label con asterisco en requeridos ── */
.form-group [required] + label::after,
label[for="from_name"]::after,
label[for="from_email"]::after,
label[for="service"]::after,
label[for="message"]::after {
  content: ' *';
  color: var(--green);
  font-size: 0.7rem;
}

/* ── Animación de entrada suave en hero stats ── */
.hero-stats .stat-item {
  transition: background var(--transition), border-color var(--transition);
}

.hero-stats .stat-item:hover {
  background: rgba(110, 214, 14, 0.05);
  border-color: var(--border);
}

/* ── Mejora visual: Sección contacto separador top ── */
.contact::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--green), transparent);
}

/* ── Mejora: focus visible para accesibilidad ── */
:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
  border-radius: var(--radius);
}

/* ── Responsive Sprint 4 ── */
@media (max-width: 640px) {
  .whatsapp-float::before { display: none; }
}