/* ============================================
   CertificadosRD — Components
   ============================================ */

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-whatsapp {
  background: var(--color-whatsapp);
  color: var(--color-white);
}

.btn-whatsapp:hover {
  background: var(--color-whatsapp-dark);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}

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

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

.btn svg,
.btn img {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* ---- Navigation ---- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

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

.nav-logo img {
  height: 40px;
  width: auto;
  border-radius: 50%;
  object-fit: cover;
}

.nav-logo .logo-text {
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 2.2px;
  color: var(--color-steel);
  text-transform: uppercase;
  line-height: 1;
}

.nav-logo .logo-text strong {
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: 0;
  margin-left: 2px;
}

.nav-links {
  display: none;
  gap: var(--space-8);
}

.nav-links a {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: width 0.3s ease;
}

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

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  display: none;
}

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle svg {
  width: 24px;
  height: 24px;
  color: var(--color-text);
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-white);
  z-index: 99;
  padding: var(--space-6);
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-menu.active {
  display: flex;
}

.mobile-menu a {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.mobile-menu .btn {
  margin-top: var(--space-4);
}

@media (min-width: 1024px) {
  .nav-links {
    display: flex;
  }
  .nav-cta {
    display: inline-flex;
  }
  .nav-toggle {
    display: none;
  }
}

/* ---- Cards ---- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 3px solid transparent;
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
  border-top-color: var(--color-primary);
  transform: translateY(-6px);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary-light);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
}

.card-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
}

.card h3 {
  margin-bottom: var(--space-3);
}

.card p {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-5);
}

.card-link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.card-link:hover {
  gap: var(--space-2);
  color: var(--color-primary-dark);
}

/* ---- Steps ---- */
.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-4);
}

.step h3 {
  margin-bottom: var(--space-2);
  font-size: var(--font-size-lg);
}

.step p {
  font-size: var(--font-size-sm);
}

/* Step connector line */
@media (min-width: 768px) {
  .step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 24px;
    left: calc(50% + 32px);
    width: calc(100% - 64px);
    height: 2px;
    background: var(--color-border);
  }
}

/* ---- Feature blocks ---- */
.feature {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.feature-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: var(--color-primary-light);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon svg {
  width: 22px;
  height: 22px;
  color: var(--color-primary);
}

.feature h3 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-1);
}

.feature p {
  font-size: var(--font-size-sm);
}

/* ---- Stats bar ---- */
.stats-bar {
  background: var(--color-primary-50);
  padding: var(--space-12) var(--space-6);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
  text-align: center;
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  display: block;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

/* ---- FAQ / Accordion ---- */
.faq-list {
  max-width: var(--container-narrow);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-normal);
}

.faq-item[open] {
  border-color: var(--color-primary);
}

.faq-item summary {
  padding: var(--space-5) var(--space-6);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  user-select: none;
  color: var(--color-text);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '';
  width: 20px;
  height: 20px;
  min-width: 20px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%234b5563' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  transition: transform var(--transition-normal);
}

.faq-item[open] summary::after {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 var(--space-6) var(--space-5);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  font-size: var(--font-size-sm);
}

/* ---- CTA Banner ---- */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  text-align: center;
  padding: var(--space-16) var(--space-6);
}

.cta-banner h2 {
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--space-8);
  font-size: var(--font-size-lg);
}

/* ---- Trust badges ---- */
.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-primary-50);
  border: 1px solid var(--color-primary-light);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary-dark);
}

.badge svg {
  width: 16px;
  height: 16px;
}

/* ---- Footer ---- */
.site-footer {
  background: var(--color-text);
  color: var(--color-white);
  padding: var(--space-16) var(--space-6) var(--space-8);
}

.footer-brand .nav-logo .logo-text {
  color: rgba(255, 255, 255, 0.7);
}

.footer-brand .nav-logo .logo-text strong {
  color: #ffffff;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
  margin-top: var(--space-4);
  max-width: 320px;
}

.footer-social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  transition: background var(--transition-fast);
}

.footer-social a:hover {
  background: rgba(255, 255, 255, 0.2);
}

.footer-social a svg {
  width: 18px;
  height: 18px;
}

.footer-heading {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: var(--space-4);
}

.footer-links a {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  padding: var(--space-1) 0;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-4);
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.4);
}

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

/* ---- WhatsApp floating button ---- */
.whatsapp-float {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 56px;
  height: 56px;
  background: var(--color-whatsapp);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  z-index: 90;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  opacity: 0;
  pointer-events: none;
}

.whatsapp-float.visible {
  opacity: 1;
  pointer-events: auto;
  animation: whatsappPulse 2.5s ease-in-out infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.5);
  animation: none;
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
  color: var(--color-white);
  fill: var(--color-white);
}

/* ---- Hero ---- */
.hero {
  padding-top: calc(72px + var(--space-16));
  padding-bottom: var(--space-16);
  background: linear-gradient(180deg, var(--color-primary-50) 0%, var(--color-white) 100%);
}

.hero h1 {
  max-width: 720px;
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-top: var(--space-5);
  line-height: var(--line-height-relaxed);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

@media (min-width: 1024px) {
  .hero {
    padding-top: calc(72px + var(--space-24));
    padding-bottom: var(--space-24);
  }
}