:root{--bg:#ffffff;--fg:#111;--muted:#666;--primary:#C53030;--secondary:#2D3748;--accent:#718096}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 'Spectral',Georgia,serif}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.site-header{position:sticky;top:0;background:#fff;border-bottom:1px solid #e8ecf3;z-index:10;box-shadow:0 2px 8px rgba(16,24,40,.04)}
.site-header .nav{display:flex;align-items:center;justify-content:space-between;padding:20px 0}
.logo-container{display:flex;align-items:center;height:80px}
.logo{display:flex;align-items:center;text-decoration:none;color:var(--fg);height:100%}
.logo img{height:190px;width:auto;display:block;object-fit:contain}
nav a{margin-left:22px;color:var(--fg);text-decoration:none;opacity:.9;font-weight:500;font-family:'Inter',sans-serif}
.logo:hover, .logo:focus{color:var(--primary)}
nav a:hover, nav a:focus{color:var(--primary);opacity:1}
.section{padding:32px 0}
.hero{
  background:linear-gradient(135deg,var(--secondary) 0%,#1a202c 100%);
  color:#fff;
  border-bottom:1px solid rgba(197,48,48,0.3);
  padding:48px 0;
  background-size: cover;
  background-repeat: no-repeat;
}
.hero-title{margin:0 0 8px;font-size:clamp(32px,3.8vw,48px);line-height:1.1;color:#fff;font-family:'Spectral',Georgia,serif;font-weight:600}
.hero .muted{color:#cbd5e0}
.hero .atributos{color:#e2e8f0}
.grid-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px}
.card{border:1px solid #e9edf5;border-radius:10px;padding:18px;background:#fff;box-shadow:0 1px 2px rgba(16,24,40,.04);transition:transform .18s ease,box-shadow .18s ease}
.card:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(16,24,40,.08)}
.card h3{margin:0 0 6px;font-size:18px;font-family:'Spectral',Georgia,serif;font-weight:500}
.card .muted{margin-bottom:8px;display:block}
.card .atributos{margin:8px 0 12px}
.muted{color:var(--muted)}
.atributos{padding-left:18px}
.btn{display:inline-block;background:var(--primary);color:#fff;padding:10px 14px;border-radius:8px;text-decoration:none;font-weight:600;box-shadow:0 1px 2px rgba(16,24,40,.06);font-family:'Inter',sans-serif}
.btn:hover,.btn:focus{filter:brightness(1.05);box-shadow:0 4px 10px rgba(16,24,40,.12)}
.link{color:var(--primary);text-decoration:none}
.link{color:var(--primary);}
.site-footer{border-top:1px solid #e9edf5;background:#fafbfe;padding:28px 0;margin-top:40px}
.newsletter-inline{display:flex;gap:8px;align-items:center}
.newsletter-inline input{flex:1;padding:10px 12px;border:1px solid #cfd6e4;border-radius:8px}
.newsletter-inline input:focus{outline:2px solid #c8d7ff;outline-offset:1px;border-color:#9db4ff}
.video{width:100%}
.video-inner{position:relative;padding-top:56.25%}
.video-inner iframe{position:absolute;top:0;left:0;width:100%;height:100%}
.grid-videos{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:18px}
.pagination{display:flex;gap:12px;align-items:center;justify-content:center;margin-top:28px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* Tipografía escalada y ajustes globales */
h1,h2,h3,h4{line-height:1.25;margin:0 0 10px;font-family:'Spectral',Georgia,serif;font-weight:500}
h1{font-size:clamp(32px,3.5vw,42px);font-weight:600}
h2{font-size:clamp(24px,2.6vw,32px);font-weight:500}
h3{font-size:20px;font-weight:500}
p{margin:0 0 12px}

/* Breadcrumbs opcional (si se agrega) */
.breadcrumbs{font-size:14px;color:var(--muted);margin:8px 0 16px}
.breadcrumbs a{color:inherit;text-decoration:none}
.breadcrumbs a:hover{color:var(--primary)}

/* Estados de foco accesibles para links */
a:focus{outline:2px solid #c8d7ff;outline-offset:2px;border-radius:4px}

/* Tarjetas de encuestas mejoradas */
.survey-card {
  background: linear-gradient(135deg, #ffffff 0%, #fafbff 100%);
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.survey-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary) 0%, #e53e3e 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.survey-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(15, 23, 42, 0.12);
  border-color: #cbd5e1;
}

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

.survey-card-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
}

.survey-icon {
  font-size: 24px;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.survey-meta {
  flex: 1;
  min-width: 0;
}

.survey-title {
  margin: 0 0 4px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.3;
}

.survey-title a {
  color: var(--secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.survey-title a:hover {
  color: var(--primary);
}

.survey-date {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.survey-stats {
  background: rgba(248, 250, 252, 0.8);
  border: 1px solid #f1f5f9;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 20px;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 14px;
}

.stat-item:last-child {
  margin-bottom: 0;
}

.stat-icon {
  font-size: 16px;
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

.stat-text {
  color: #475569;
  font-weight: 500;
}

.survey-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-pdf {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary);
  color: white;
  padding: 8px 16px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  box-shadow: 0 2px 4px rgba(197, 48, 48, 0.2);
  transition: all 0.2s ease;
  font-family: 'Inter', sans-serif;
}

.btn-pdf:hover {
  background: #b91c1c;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(197, 48, 48, 0.3);
}

.btn-icon {
  font-size: 14px;
}

.btn-detail {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  padding: 8px 12px;
  border-radius: 8px;
  transition: all 0.2s ease;
  font-family: 'Inter', sans-serif;
}

.btn-detail:hover {
  background: rgba(197, 48, 48, 0.05);
  color: #b91c1c;
}

.btn-arrow {
  transition: transform 0.2s ease;
}

.btn-detail:hover .btn-arrow {
  transform: translateX(2px);
}

/* Footer mejorado */
.site-footer {
  border-top: 1px solid #e9edf5;
  background: linear-gradient(135deg, #fafbfe 0%, #f1f5f9 100%);
  padding: 40px 0 20px;
  margin-top: 40px;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

.footer-section {
  background: white;
  padding: 24px;
  border-radius: 12px;
  border: 1px solid #e2e8f0;
  box-shadow: 0 2px 4px rgba(15, 23, 42, 0.04);
}

.footer-title {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 600;
  color: var(--secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-description {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.newsletter-form {
  width: 100%;
}

.input-group {
  display: flex;
  gap: 8px;
  align-items: stretch;
}

.input-group input {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 14px;
  transition: all 0.2s ease;
  font-family: 'Inter', sans-serif;
}

.input-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(197, 48, 48, 0.1);
}

.btn-subscribe {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary);
  color: white;
  padding: 12px 20px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: 'Inter', sans-serif;
  white-space: nowrap;
}

.btn-subscribe:hover {
  background: #b91c1c;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(197, 48, 48, 0.2);
}

.btn-icon {
  font-size: 14px;
}

.social-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--secondary);
  transition: all 0.2s ease;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 500;
}

.social-link:hover {
  background: rgba(59, 130, 246, 0.05);
  border-color: rgba(59, 130, 246, 0.2);
  transform: translateX(4px);
}

.social-link.twitter:hover {
  background: rgba(29, 161, 242, 0.05);
  border-color: rgba(29, 161, 242, 0.2);
  color: #1da1f2;
}

.social-link.linkedin:hover {
  background: rgba(0, 119, 181, 0.05);
  border-color: rgba(0, 119, 181, 0.2);
  color: #0077b5;
}

.social-link.facebook:hover {
  background: rgba(24, 119, 242, 0.05);
  border-color: rgba(24, 119, 242, 0.2);
  color: #1877f2;
}

.social-icon {
  font-size: 16px;
  width: 20px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid #e2e8f0;
  padding-top: 20px;
  text-align: center;
}

.footer-credit {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.footer-credit a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.footer-credit a:hover {
  text-decoration: underline;
}

/* Media queries sutiles */
@media (min-width: 1200px){
  .container{max-width:1240px}
}

/* Estilos para el Footer */
.footer-section .social-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-section .social-link {
  color: #4a5568; /* gray-700 */
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.3s ease;
}

.footer-section .social-link:hover {
  color: #1a202c; /* gray-900 */
}

.footer-section .social-link i {
  font-size: 1.1rem;
  width: 20px; /* Ancho fijo para alinear los íconos */
  text-align: center;
}

/* Estilos para la página de detalle de la encuesta */
.encuesta-detail .encuesta-detail-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media (min-width: 992px) {
  .encuesta-detail .encuesta-detail-body {
    grid-template-columns: minmax(0, 2.5fr) minmax(0, 1fr);
  }
}

.encuesta-detail .encuesta-main-content .encuesta-detail-header h1 {
  font-size: clamp(28px, 4vw, 40px);
  color: var(--secondary);
  margin-bottom: 0.5rem;
}

.encuesta-detail .encuesta-main-content .encuesta-detail-header p.muted {
  margin-bottom: 2rem;
}

.encuesta-detail .encuesta-main-content h2 {
  font-size: 24px;
  color: var(--secondary);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid #e2e8f0;
}

.encuesta-detail .encuesta-sidebar .card {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.05);
  position: sticky;
  top: 2rem;
}

.encuesta-detail .encuesta-sidebar .card h3 {
  margin-top: 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--secondary);
  border-bottom: 1px solid #cbd5e1;
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
}

.encuesta-detail .encuesta-sidebar .atributos {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem 0;
  font-size: 15px;
  color: #475569;
}

.encuesta-detail .encuesta-sidebar .atributos li {
  padding: 0.75rem 0;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.encuesta-detail .encuesta-sidebar .atributos li:last-child {
  border-bottom: none;
}

.encuesta-detail .encuesta-sidebar .btn-primary {
  display: block;
  width: 100%;
  text-align: center;
  background: var(--primary);
  color: white;
  padding: 14px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.2s;
}

.encuesta-detail .encuesta-sidebar .btn-primary:hover {
  background: #b91c1c;
}

.encuesta-detail .share-card .share-buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}

.encuesta-detail .share-card .share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 8px;
  color: white;
  font-size: 18px;
  text-decoration: none;
  transition: transform 0.2s, opacity 0.2s;
}

.encuesta-detail .share-card .share-btn:hover {
  transform: translateY(-2px);
  opacity: 0.9;
}

.share-btn.twitter { background-color: #1DA1F2; }
.share-btn.facebook { background-color: #1877F2; }
.share-btn.linkedin { background-color: #0A66C2; }
.share-btn.whatsapp { background-color: #25D366; }

/* Estilos para los mensajes del formulario de suscripción */
.newsletter-message {
  font-size: 0.9rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin-top: 12px;
  text-align: center;
  display: none; /* Oculto por defecto */
  transition: all 0.3s ease;
}

.newsletter-message.success {
  color: #155724;
  background-color: #d4edda;
  border: 1px solid #c3e6cb;
  display: block;
}

.newsletter-message.error {
  color: #721c24;
  background-color: #f8d7da;
  border: 1px solid #f5c6cb;
  display: block;
}