/* =============================================
   Certificados Digitales - Factura Latam
   Hoja de estilos independiente
   ============================================= */

:root {
  /* Paleta */
  --c-primary: #2563eb;
  --c-primary-dark: #1d4ed8;
  --c-primary-light: #dbeafe;
  --c-accent: #0ea5e9;

  --c-success: #10b981;
  --c-success-bg: #d1fae5;
  --c-warning: #f59e0b;
  --c-warning-bg: #fef3c7;
  --c-danger: #ef4444;
  --c-danger-bg: #fee2e2;

  --c-text: #0f172a;
  --c-text-muted: #64748b;
  --c-text-soft: #475569;

  --c-border: #e2e8f0;
  --c-border-strong: #cbd5e1;
  --c-bg: #f8fafc;
  --c-bg-card: #ffffff;
  --c-bg-alt: #f1f5f9;

  /* Radios */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-pill: 999px;

  /* Sombras */
  --sh-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --sh-md: 0 4px 14px rgba(15, 23, 42, 0.06);
  --sh-lg: 0 10px 30px rgba(15, 23, 42, 0.08);
  --sh-focus: 0 0 0 4px rgba(37, 99, 235, 0.15);

  /* Tipografía */
  --f-sans: 'Jost', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Transiciones */
  --t-fast: 0.15s ease;
  --t-base: 0.2s ease;
}

/* ============= RESET base ============= */

.cert-page,
.cert-page * {
  box-sizing: border-box;
}

.cert-page {
  font-family: var(--f-sans);
  background: var(--c-bg);
  color: var(--c-text);
  font-size: 15px;
  line-height: 1.55;
  margin: 0;
}

.cert-page a {
  color: var(--c-primary);
  text-decoration: none;
  transition: color var(--t-fast);
}
.cert-page a:hover {
  color: var(--c-primary-dark);
  text-decoration: underline;
}

/* ============= NAVBAR ============= */

.cert-navbar {
  background: #ffffff;
  border-bottom: 1px solid var(--c-border);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--sh-sm);
}
.cert-navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1100px;
  padding: 0 24px;
  margin: 0 auto;
}
.cert-navbar .logo-latam {
  height: 36px;
  display: block;
}
.btn-volver {
  color: var(--c-text-soft) !important;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--c-border);
  padding: 7px 14px;
  border-radius: var(--r-md);
  transition: all var(--t-base);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-volver:hover {
  background: var(--c-bg-alt);
  border-color: var(--c-border-strong);
  color: var(--c-text) !important;
  text-decoration: none;
}

/* ============= HERO ============= */

.cert-hero {
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 60%, #0ea5e9 100%);
  color: #fff;
  padding: 70px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cert-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(255,255,255,0.08) 0, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(255,255,255,0.06) 0, transparent 40%);
  pointer-events: none;
}
.cert-hero .container {
  position: relative;
  max-width: 760px;
  padding: 0 24px;
  margin: 0 auto;
}
.cert-hero h1 {
  font-size: 2.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
  color: #fff;
  line-height: 1.2;
}
.cert-hero-sub {
  font-size: 1rem;
  max-width: 580px;
  margin: 0 auto 28px;
  opacity: 0.92;
  font-weight: 300;
  line-height: 1.55;
}
.cert-hero-sub strong {
  font-weight: 600;
  color: #fff;
}
.cert-hero-precio {
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  background: rgba(255,255,255,0.14);
  backdrop-filter: blur(8px);
  padding: 14px 30px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(255,255,255,0.25);
}
.precio-monto {
  font-size: 1.7rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
}
.precio-detalle {
  font-size: 0.85rem;
  opacity: 0.85;
  font-weight: 400;
}

/* ============= FORM WRAPPER ============= */

.cert-form-wrapper {
  padding: 50px 20px 80px;
}
.cert-form-wrapper .container {
  max-width: 820px;
  padding: 0;
  margin: 0 auto;
}

/* ============= STEPS / CARDS ============= */

.cert-step {
  background: var(--c-bg-card);
  border-radius: var(--r-lg);
  margin-bottom: 22px;
  box-shadow: var(--sh-md);
  border: 1px solid var(--c-border);
  overflow: hidden;
  transition: box-shadow var(--t-base);
}
.cert-step:hover {
  box-shadow: var(--sh-lg);
}

/* Pasos bloqueados hasta verificar el correo (difuminados y sin interacción) */
.cert-step-bloqueable {
  transition: opacity 0.25s ease, filter 0.25s ease;
}
.cert-step-bloqueable.bloqueado {
  opacity: 0.5;
  filter: blur(2px);
  pointer-events: none;
  user-select: none;
}

/* Campos auto-rellenados desde el RUT (solo lectura) */
.cert-step-body .form-control.campo-readonly,
.cert-step-body select.form-control.campo-readonly:disabled {
  background: var(--c-bg-alt);
  color: var(--c-text);
  cursor: default;
  opacity: 1;
}

/* ============= WIZARD POR PASOS ============= */

/* Barra de progreso */
.cert-stepper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  max-width: 620px;
  margin: 0 auto 30px;
  padding: 0 8px;
}
.cert-stepper-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  text-align: center;
}
.cert-stepper-num {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
  background: #fff;
  color: var(--c-text-muted);
  border: 2px solid var(--c-border-strong);
  transition: all var(--t-base);
}
.cert-stepper-label {
  font-size: 0.74rem;
  font-weight: 500;
  color: var(--c-text-muted);
  max-width: 92px;
  line-height: 1.2;
  transition: color var(--t-base);
}
.cert-stepper-sep {
  flex: 1 1 auto;
  height: 2px;
  max-width: 80px;
  background: var(--c-border-strong);
  margin-bottom: 24px;
  transition: background var(--t-base);
}
.cert-stepper-item.activo .cert-stepper-num {
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-dark));
  color: #fff;
  border-color: var(--c-primary);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}
.cert-stepper-item.activo .cert-stepper-label {
  color: var(--c-primary-dark);
  font-weight: 600;
}
.cert-stepper-item.completado .cert-stepper-num {
  background: var(--c-success);
  color: #fff;
  border-color: var(--c-success);
}
.cert-stepper-item.completado .cert-stepper-label { color: var(--c-text); }
.cert-stepper-item.completado + .cert-stepper-sep,
.cert-stepper-sep.completado { background: var(--c-success); }

/* Paneles del wizard (uno visible a la vez) */
.cert-wizard-step { display: none; }
.cert-wizard-step.activo { display: block; animation: certFade 0.3s ease; }
@keyframes certFade {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Navegación Atrás / Continuar */
.cert-wizard-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--c-border);
}
.cert-wizard-spacer { flex: 0 0 auto; }
.btn-wizard-next {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  color: #fff;
  border: none;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 12px 30px;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: all var(--t-base);
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.30);
}
.btn-wizard-next:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(37, 99, 235, 0.42); }
.btn-wizard-next:disabled { opacity: 0.5; cursor: not-allowed; box-shadow: none; }
.btn-wizard-prev {
  background: #fff;
  color: var(--c-text-soft);
  border: 1.5px solid var(--c-border-strong);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 11px 24px;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: all var(--t-base);
}
.btn-wizard-prev:hover { background: var(--c-bg-alt); border-color: var(--c-text-muted); color: var(--c-text); }

@media (max-width: 575px) {
  .cert-stepper-label { font-size: 0.62rem; max-width: 62px; }
  .cert-stepper-num { width: 32px; height: 32px; font-size: 0.85rem; }
  .cert-stepper-sep { margin-bottom: 20px; max-width: 50px; }
  .btn-wizard-next { padding: 11px 20px; font-size: 0.88rem; }
  .btn-wizard-prev { padding: 10px 16px; font-size: 0.85rem; }
}

.cert-link-cambiar {
  display: inline-block;
  background: none;
  border: none;
  color: var(--c-primary);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  padding: 4px 0;
  margin-top: 10px;
  text-decoration: underline;
}
.cert-link-cambiar:hover { color: var(--c-primary-dark); }

/* Subtítulo dentro de una subsección (ej. "1. Datos de facturación") */
.cert-step-body .subseccion-subtitle {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--c-text);
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--c-border);
}
.cert-step-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 28px;
  background: linear-gradient(180deg, var(--c-bg-alt), #ffffff);
  border-bottom: 1px solid var(--c-border);
}
.cert-step-header h2 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--c-text);
  letter-spacing: -0.01em;
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--r-pill);
  background: var(--c-primary);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: 0 4px 12px rgba(37,99,235,0.3);
  flex-shrink: 0;
}
.cert-step-body {
  padding: 28px;
}

/* ============= FORM FIELDS ============= */

.cert-step-body .form-group {
  margin-bottom: 20px;
}
.cert-step-body label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--c-text);
  margin-bottom: 7px;
  letter-spacing: 0.01em;
}
.cert-step-body .form-control {
  width: 100%;
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--c-text);
  background: #fff;
  border: 1.5px solid var(--c-border);
  border-radius: var(--r-md);
  padding: 11px 14px;
  height: auto;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.cert-step-body .form-control:hover {
  border-color: var(--c-border-strong);
}
.cert-step-body .form-control:focus {
  border-color: var(--c-primary);
  box-shadow: var(--sh-focus);
  outline: none;
}
.cert-step-body select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='%2364748b' d='M6 8L0 0h12z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
.cert-step-body textarea.form-control {
  min-height: 90px;
  resize: vertical;
}
.cert-step-body small.text-muted {
  font-size: 0.72rem;
  color: var(--c-text-muted) !important;
  display: block;
  margin-top: 6px;
}

.cert-step-body .form-control-file {
  display: block;
  width: 100%;
  font-size: 0.8rem;
  padding: 9px 12px;
  background: #fff;
  border: 1.5px dashed var(--c-border-strong);
  border-radius: var(--r-md);
  color: var(--c-text-soft);
  cursor: pointer;
  transition: border-color var(--t-fast), background var(--t-fast);
}
.cert-step-body .form-control-file:hover {
  border-color: var(--c-primary);
  background: var(--c-primary-light);
}
.cert-step-body .form-control-file:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: var(--sh-focus);
}

/* ============= RADIO CARDS ============= */

.cert-radio-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 600px) {
  .cert-radio-group { grid-template-columns: 1fr; }
}
.cert-radio {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  background: #fff;
  border: 1.5px solid var(--c-border);
  border-radius: var(--r-md);
  cursor: pointer;
  transition: all var(--t-base);
  margin: 0;
  position: relative;
}
.cert-radio:hover {
  border-color: var(--c-primary);
  background: var(--c-primary-light);
}
.cert-radio input[type=radio] {
  margin: 4px 0 0;
  accent-color: var(--c-primary);
  cursor: pointer;
  flex-shrink: 0;
}
.cert-radio strong {
  display: block;
  font-size: 0.9rem;
  color: var(--c-text);
  font-weight: 600;
  margin-bottom: 2px;
}
.cert-radio small {
  display: block;
  font-size: 0.75rem;
  color: var(--c-text-muted);
}
.cert-radio:has(input:checked) {
  border-color: var(--c-primary);
  background: var(--c-primary-light);
}
.cert-radio:has(input:checked) strong {
  color: var(--c-primary-dark);
}

/* ============= CHECKBOX ============= */

.cert-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--c-text-soft);
  margin: 0;
  user-select: none;
}
.cert-checkbox input[type=checkbox] {
  width: 17px;
  height: 17px;
  margin: 0;
  accent-color: var(--c-primary);
  cursor: pointer;
  flex-shrink: 0;
}
.cert-checkbox a {
  color: var(--c-primary);
  text-decoration: underline;
}

/* ============= ARCHIVOS / FILE ROWS ============= */

.cert-archivos {
  background: var(--c-bg-alt);
  border: 1.5px dashed var(--c-border-strong);
  border-radius: var(--r-md);
  padding: 22px;
  margin: 4px 0 22px;
}
.file-row .file-row-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 7px;
}
.file-row .file-row-head label {
  margin: 0;
}
.btn-ver-ejemplo {
  background: #fff;
  border: 1px solid var(--c-primary);
  color: var(--c-primary);
  font-size: 0.72rem;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: all var(--t-fast);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.btn-ver-ejemplo::before {
  content: "👁";
  font-size: 0.8rem;
}
.btn-ver-ejemplo:hover {
  background: var(--c-primary);
  color: #fff;
}

/* ============= AVISOS / ALERTS ============= */

.aviso-validacion {
  background: var(--c-warning-bg);
  border-left: 3px solid var(--c-warning);
  padding: 10px 14px;
  border-radius: var(--r-sm);
  font-size: 0.8rem;
  color: #78350f;
  margin: 0 0 18px;
}
.aviso-validacion strong {
  color: #92400e;
}

.alert {
  border-radius: var(--r-md);
  font-size: 0.88rem;
  padding: 13px 18px;
  margin-bottom: 22px;
  border: 1px solid transparent;
}
.alert-danger {
  background: var(--c-danger-bg);
  border-color: #fecaca;
  color: #991b1b;
}
.alert-success {
  background: var(--c-success-bg);
  border-color: #a7f3d0;
  color: #065f46;
}

/* ============= NOTAS ============= */

.cert-notas {
  background: var(--c-warning-bg);
  border: 1px solid #fde68a;
  border-left: 4px solid var(--c-warning);
  border-radius: var(--r-md);
  padding: 18px 22px;
  margin-top: 8px;
}
.cert-notas > strong {
  display: block;
  margin-bottom: 10px;
  color: #78350f;
  font-size: 0.9rem;
  font-weight: 600;
}
.cert-notas li strong {
  color: #78350f;
  font-weight: 600;
}
.cert-notas ul {
  margin: 0;
  padding-left: 18px;
  font-size: 0.82rem;
  color: #713f12;
  line-height: 1.55;
}
.cert-notas li {
  margin-bottom: 5px;
}
.cert-notas li:last-child {
  margin-bottom: 0;
}

/* ============= SUBSECCIONES ============= */

.cert-subseccion {
  border-top: 1px solid var(--c-border);
  padding-top: 22px;
  margin-top: 22px;
}
.cert-subseccion:first-child {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}
.subseccion-title {
  font-size: 0.98rem;
  color: var(--c-text);
  font-weight: 600;
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.info-concepto {
  background: var(--c-primary-light);
  border-left: 3px solid var(--c-primary);
  padding: 10px 14px;
  border-radius: var(--r-sm);
  font-size: 0.8rem;
  color: var(--c-primary-dark);
  margin-top: 12px;
}
.muted-text {
  font-size: 0.8rem;
  color: var(--c-text-muted);
  margin-bottom: 14px;
}

/* ============= RESUMEN ============= */

.cert-resumen {
  background: linear-gradient(180deg, var(--c-bg-alt), #fff);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: 22px 26px;
  margin-bottom: 24px;
}
.resumen-linea {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  padding: 7px 0;
  color: var(--c-text-soft);
}
.resumen-total {
  border-top: 1px solid var(--c-border);
  margin-top: 10px;
  padding-top: 14px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--c-text);
}
.resumen-total span:last-child {
  color: var(--c-primary);
}
.resumen-iva {
  margin: 12px 0 0;
  font-size: 0.74rem;
  color: var(--c-text-muted);
  font-style: italic;
}
.cert-metodos-info {
  font-size: 0.85rem;
  color: var(--c-primary-dark);
  background: var(--c-primary-light);
  border-left: 3px solid var(--c-primary);
  padding: 12px 16px;
  border-radius: var(--r-sm);
  margin-bottom: 22px;
}

/* ============= BOTÓN ENVIAR ============= */

.btn-enviar-cert {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  color: #fff;
  border: none;
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 600;
  padding: 15px 44px;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: all var(--t-base);
  box-shadow: 0 6px 18px rgba(37,99,235,0.35);
  letter-spacing: 0.01em;
}
.btn-enviar-cert:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(37,99,235,0.45);
}
.btn-enviar-cert:active {
  transform: translateY(0);
}

/* ============= MODAL EJEMPLOS ============= */

.modal-ejemplo .modal-dialog {
  max-width: 600px;
  margin: 1.75rem auto;
}
.modal-ejemplo .modal-content {
  border-radius: var(--r-lg);
  border: none;
  box-shadow: var(--sh-lg);
  overflow: hidden;
}
.modal-ejemplo .modal-header {
  background: linear-gradient(180deg, var(--c-bg-alt), #ffffff);
  border-bottom: 1px solid var(--c-border);
  padding: 18px 24px;
}
.modal-ejemplo .modal-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-text);
}
.modal-ejemplo .close {
  font-size: 1.7rem;
  font-weight: 300;
  opacity: 0.6;
  transition: opacity var(--t-fast);
}
.modal-ejemplo .close:hover {
  opacity: 1;
}
.modal-ejemplo .modal-body {
  padding: 24px;
}
.modal-ejemplo .ejemplo-img {
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: 14px;
  margin-bottom: 18px;
  text-align: center;
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-ejemplo .ejemplo-img img {
  max-width: 100%;
  max-height: 620px;
  border-radius: var(--r-sm);
  box-shadow: var(--sh-sm);
}
.modal-ejemplo .ejemplo-placeholder {
  color: var(--c-text-muted);
  font-size: 0.85rem;
  font-style: italic;
  padding: 60px 20px;
}
.modal-ejemplo .ejemplo-texto {
  font-size: 0.88rem;
  color: var(--c-text-soft);
  background: var(--c-primary-light);
  border-radius: var(--r-md);
  padding: 14px 18px;
}
.modal-ejemplo .ejemplo-texto p {
  margin: 0 0 6px;
  color: var(--c-primary-dark);
  font-weight: 600;
}
.modal-ejemplo .ejemplo-texto ul {
  padding-left: 20px;
  margin: 0;
}
.modal-ejemplo .ejemplo-texto li {
  margin-bottom: 4px;
}
.modal-ejemplo .ejemplo-texto li:last-child {
  margin-bottom: 0;
}

/* ============= FOOTER ============= */

.cert-footer {
  background: #0f172a;
  color: #cbd5e1;
  padding: 38px 20px 28px;
  font-size: 0.85rem;
}
.cert-footer .container {
  max-width: 1100px;
  margin: 0 auto;
}
.cert-footer .navbar-brand a {
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}
.cert-footer a {
  color: #cbd5e1;
}
.cert-footer a:hover {
  color: #fff;
}
.cert-footer p {
  margin: 8px 0 0;
  opacity: 0.85;
}
.cert-footer ul li {
  margin-bottom: 5px;
}
.cert-footer .contact-info i {
  margin-right: 6px;
}

/* ============= WHATSAPP FLOTANTE (estilo apilanding) ============= */

:root {
  --fab-size: 72px;
  --fab-size-sm: 58px;
}

.wa-fab-wrap {
  position: fixed;
  bottom: 14px;
  right: 8px;
  display: flex;
  flex-direction: row-reverse;
  align-items: center;
  gap: 10px;
  z-index: 9999;
}
.wa-fab-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--fab-size);
  height: var(--fab-size);
  border-radius: 50%;
  text-decoration: none;
  cursor: pointer;
  flex-shrink: 0;
}
.wa-fab-btn:hover .wa-fab-icon { transform: scale(1.1); }
.wa-fab-icon {
  width: var(--fab-size);
  height: var(--fab-size);
  border-radius: 50%;
  position: relative;
  z-index: 2;
  transition: transform 0.2s ease;
  filter: drop-shadow(0 4px 10px rgba(37,211,102,0.45));
}
.wa-fab-pulse {
  position: absolute;
  width: var(--fab-size);
  height: var(--fab-size);
  border-radius: 50%;
  background: rgba(37, 211, 102, 0.35);
  animation: waPulse 1.5s ease-out infinite;
  z-index: 1;
}
.wa-fab-pulse-2 { animation-delay: 0.75s; }
@keyframes waPulse {
  0%   { transform: scale(1);    opacity: 0.7; }
  70%  { transform: scale(1.75); opacity: 0; }
  100% { transform: scale(1.75); opacity: 0; }
}
.wa-fab-text {
  border-radius: 20px;
  padding: 8px 16px;
  text-align: center;
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.5;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  color: #fff;
  background: #25D366;
  transform: translateX(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.wa-fab-text small {
  display: block;
  font-size: 0.68rem;
  font-weight: 400;
  opacity: 0.85;
}
.wa-fab-wrap:hover .wa-fab-text {
  opacity: 1;
  transform: translateX(0);
}
@media (max-width: 576px) {
  :root { --fab-size: var(--fab-size-sm); }
  .wa-fab-wrap { bottom: 10px; right: 4px; gap: 7px; }
  .wa-fab-text { font-size: 0.7rem; padding: 6px 11px; }
}

/* =============================================
   PÁGINA GRACIAS
   ============================================= */

.cert-gracias {
  background: #fff;
  border-radius: var(--r-lg);
  padding: 50px 40px;
  text-align: center;
  box-shadow: var(--sh-md);
  border: 1px solid var(--c-border);
  margin-bottom: 30px;
}
.cert-gracias .check-icon {
  width: 78px;
  height: 78px;
  line-height: 78px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-success), #059669);
  color: #fff;
  font-size: 38px;
  display: inline-block;
  margin-bottom: 22px;
  box-shadow: 0 8px 24px rgba(16,185,129,0.32);
}
.cert-gracias h1 {
  font-size: 1.75rem;
  color: var(--c-text);
  margin-bottom: 12px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.cert-gracias .lead {
  font-size: 0.98rem;
  color: var(--c-text-soft);
  max-width: 600px;
  margin: 0 auto 24px;
  line-height: 1.6;
}

.pago-metodos {
  margin-top: 30px;
}
.pago-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: 24px 26px;
  margin-bottom: 18px;
  text-align: left;
  box-shadow: var(--sh-sm);
  transition: box-shadow var(--t-base), transform var(--t-base);
}
.pago-card:hover {
  box-shadow: var(--sh-md);
  transform: translateY(-2px);
}
.pago-card h3 {
  font-size: 1rem;
  color: var(--c-text);
  margin: 0 0 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.pago-card .badge-metodo {
  background: var(--c-primary);
  color: #fff;
  padding: 3px 11px;
  border-radius: var(--r-pill);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.pago-card .badge-metodo.recomendado {
  background: var(--c-success);
}
.pago-card p {
  margin: 0 0 12px;
  font-size: 0.88rem;
  color: var(--c-text-soft);
}
.pago-card p:last-child {
  margin-bottom: 0;
}
.pago-bancolombia .cuenta-info {
  background: var(--c-bg-alt);
  border-radius: var(--r-md);
  padding: 16px 18px;
  font-size: 0.88rem;
  line-height: 1.85;
  border: 1px solid var(--c-border);
}
.pago-bancolombia .cuenta-info > div {
  display: flex;
  gap: 8px;
}
.pago-bancolombia .cuenta-info strong {
  color: var(--c-text);
  min-width: 200px;
  display: inline-block;
}
.pago-card .cert-comprobante {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--c-border);
  margin-bottom: 0;
}
.pago-card .cert-comprobante label {
  display: block;
  font-weight: 600;
  color: var(--c-text);
  margin-bottom: 8px;
}

/* Selector de método de pago (radio + título) */
.pago-metodo-sel {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  margin: 0 0 12px;
}
.pago-metodo-radio {
  margin-top: 3px;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  cursor: pointer;
}
.pago-metodo-titulo {
  font-size: 1rem;
  color: var(--c-text);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.pago-card.pago-card-activa {
  border-color: var(--c-primary);
  box-shadow: var(--sh-md);
}

/* =============================================
   RESPONSIVE
   ============================================= */

@media (max-width: 768px) {
  .cert-hero { padding: 50px 20px 45px; }
  .cert-hero h1 { font-size: 1.6rem; }
  .cert-hero-sub { font-size: 0.92rem; }
  .precio-monto { font-size: 1.35rem; }
  .cert-step-body { padding: 22px 18px; }
  .cert-step-header { padding: 16px 20px; }
  .cert-gracias { padding: 35px 22px; }
  .cert-gracias h1 { font-size: 1.4rem; }
  .pago-bancolombia .cuenta-info > div { flex-direction: column; gap: 2px; }
  .pago-bancolombia .cuenta-info strong { min-width: 0; }
  .cert-footer { text-align: center; }
  .cert-footer .text-lg-right { text-align: center !important; margin-top: 18px; }
}

@media (max-width: 480px) {
  .cert-navbar .container { padding: 0 16px; }
  .btn-volver { font-size: 12px; padding: 6px 10px; }
  .modal-ejemplo .modal-dialog { margin: 0.75rem; }
  .modal-ejemplo .ejemplo-img img { max-height: 480px; }
}

/* ============= VERIFICACIÓN DE CORREO ============= */

.cert-paso-intro {
  font-size: 0.88rem;
  color: var(--c-text-soft);
  margin: 0 0 18px;
  line-height: 1.5;
}

.cert-input-verify {
  display: flex;
  gap: 10px;
  align-items: stretch;
}
.cert-input-verify .form-control {
  flex: 1 1 auto;
  min-width: 0;
}

.btn-verificar {
  flex: 0 0 auto;
  white-space: nowrap;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  color: #fff;
  border: none;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0 22px;
  border-radius: var(--r-md);
  cursor: pointer;
  transition: all var(--t-base);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.28);
}
.btn-verificar:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 7px 18px rgba(37, 99, 235, 0.38);
}
.btn-verificar:active:not(:disabled) { transform: translateY(0); }
.btn-verificar:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
}

.cert-hint {
  font-size: 0.72rem;
  color: var(--c-text-muted);
  display: block;
  margin-top: 7px;
  min-height: 1em;
  transition: color var(--t-fast);
}
.cert-hint.error   { color: var(--c-danger);  font-weight: 500; }
.cert-hint.success { color: var(--c-success); font-weight: 500; }

.cert-verificado {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--c-success-bg);
  color: #065f46;
  border: 1px solid var(--c-success);
  border-radius: var(--r-md);
  padding: 12px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-top: 6px;
}
.cert-verificado-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--c-success);
  color: #fff;
  font-size: 0.8rem;
  flex: 0 0 auto;
}

@media (max-width: 575px) {
  .cert-input-verify { flex-direction: column; }
  .btn-verificar { padding: 12px 22px; }
}

/* ===== Botón "Pagar con tarjeta" (abre pagar.php en pestaña nueva) ===== */
.cert-page a.btn-pagar-tarjeta {
  display: inline-block;
  text-decoration: none;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 12px 26px;
  border-radius: var(--r-md);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.28);
  transition: all var(--t-base);
}
.cert-page a.btn-pagar-tarjeta:hover,
.cert-page a.btn-pagar-tarjeta:focus {
  transform: translateY(-1px);
  box-shadow: 0 7px 18px rgba(37, 99, 235, 0.38);
  color: #fff;
  text-decoration: none;
}
.pago-nota-tarjeta {
  font-size: 0.78rem;
  color: var(--c-text-muted);
  margin-top: 10px;
  margin-bottom: 0;
}
.pago-aviso-comprobante {
  margin-top: 18px;
  background: var(--c-warning-bg);
  border: 1px solid var(--c-warning);
  border-radius: var(--r-md);
  padding: 12px 14px;
  font-size: 0.82rem;
  color: #92400e;
  line-height: 1.5;
}