/* Estilos para la sección Skills/Logros - Principio Single Responsibility */
/* Variables CSS para la sección Skills */
:root {
  --skills-bg: transparent;
  --skills-text: #ffffff;
  --skills-accent: #308cce;
  --skills-card-bg: rgba(255, 255, 255, 0.08);
  --skills-card-border: rgba(255, 255, 255, 0.15);
  --skills-card-hover-bg: rgba(255, 255, 255, 0.12);
  --skills-card-hover-border: rgba(255, 255, 255, 0.25);
  --skills-date-bg: rgba(48, 140, 206, 0.2);
  --skills-date-text: #308cce;
  --skills-btn-bg: #308cce;
  --skills-btn-hover: #2a7bb8;
  --skills-shadow: rgba(0, 0, 0, 0.3);
  --skills-hover-shadow: rgba(48, 140, 206, 0.3);
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Contenedor principal de la sección Skills */
.seccion-skills {
  margin: 40px auto;
  padding: 60px 20px;
  text-align: center;
  position: relative;
  max-width: 1200px;
}

/* Título de la sección */
.seccion-skills h1 {
  color: var(--skills-text);
  font-size: 2.5rem;
  margin-bottom: 3rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

/* Contenedor principal del skills */
.skills-container {
  max-width: 1000px;
  margin: 0 auto;
  position: relative;
}

/* Grid de certificados - 2 columnas responsive */
.certificates-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  justify-items: center;
  align-items: start;
}

/* Tarjetas individuales de certificados */
.certificate-card {
  background: var(--skills-card-bg);
  border: 1px solid var(--skills-card-border);
  border-radius: 16px;
  padding: 24px;
  width: 100%;
  max-width: 450px;
  cursor: pointer;
  transition: var(--transition-smooth);
  position: relative;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  text-align: left;
}

/* Fecha del certificado */
.certificate-date {
  background: var(--skills-date-bg);
  color: var(--skills-date-text);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 16px;
  letter-spacing: 0.025em;
}

/* Contenedor de la imagen del certificado */
.certificate-image {
  width: 100%;
  height: 350px;
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 20px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Imagen miniatura del certificado */
.cert-thumbnail {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: var(--transition-smooth);
  border-radius: 8px;
}

/* Información del certificado */
.certificate-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Título del certificado */
.certificate-title {
  color: var(--skills-text);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
  line-height: 1.4;
}

/* Descripción del certificado */
.certificate-description {
  color: #e0e0e0;
  font-size: 0.95rem;
  line-height: 1.5;
  margin: 0;
  opacity: 0.9;
}

/* Botón Ver Certificado */
.btn-certificate {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--skills-btn-bg);
  color: white;
  padding: 12px 20px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition-smooth);
  align-self: flex-start;
  margin-top: 8px;
  border: none;
  cursor: pointer;
}

/* Ícono del botón */
.certificate-icon {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  transition: var(--transition-smooth);
}

/* Efectos hover para la tarjeta completa */
.certificate-card:hover {
  transform: translateY(-5px);
  background: var(--skills-card-hover-bg);
  border-color: var(--skills-card-hover-border);
  box-shadow: 
    0 20px 40px var(--skills-shadow),
    0 0 30px var(--skills-hover-shadow);
}

.certificate-card:hover .cert-thumbnail {
  transform: scale(1.05);
}

/* Efecto hover para el botón */
.btn-certificate:hover {
  background: var(--skills-btn-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(48, 140, 206, 0.4);
}

.btn-certificate:hover .certificate-icon {
  transform: translateX(2px);
}

/* Efecto de click en tarjeta */
.certificate-card:active {
  transform: translateY(-2px);
}

/* Responsive Design */
/* Pantallas medianas y menores - cambio a 1 columna */
@media (max-width: 1100px) {
  .seccion-skills {
    margin: 20px 10px;
    padding: 40px 15px;
  }
  
  .seccion-skills h1 {
    font-size: 2rem;
    margin-bottom: 2rem;
  }
  
  .certificates-grid {
    grid-template-columns: 1fr;
    gap: 30px;
    max-width: 600px;
    margin: 0 auto;
  }
  
  .certificate-card {
    padding: 20px;
    max-width: none;
  }
  
  .certificate-image {
    height: 350px;
    margin-bottom: 16px;
  }
  
  .certificate-title {
    font-size: 1.1rem;
  }
  
  .certificate-description {
    font-size: 0.9rem;
  }
  
  .btn-certificate {
    padding: 10px 16px;
    font-size: 0.85rem;
  }
}

/* Pantallas pequeñas (móviles) */
@media (max-width: 480px) {
  .seccion-skills {
    margin: 15px 5px;
    padding: 30px 10px;
  }
  
  .seccion-skills h1 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
  }
  
  .certificates-grid {
    grid-template-columns: 1fr;
    gap: 25px;
    max-width: 400px;
    margin: 0 auto;
  }
  
  .certificate-card {
    padding: 18px;
    text-align: center;
  }
  
  .certificate-image {
    height: 300px;
    margin-bottom: 18px;
  }
  
  .certificate-title {
    font-size: 1.15rem;
    text-align: center;
  }
  
  .certificate-description {
    font-size: 0.9rem;
    text-align: center;
  }
  
  .btn-certificate {
    align-self: center;
    padding: 12px 18px;
    font-size: 0.9rem;
  }
  
  .certificate-date {
    font-size: 0.8rem;
    padding: 5px 10px;
  }
}

/* Animación de entrada para las tarjetas */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.certificate-card {
  animation: fadeInUp 0.6s ease-out;
  animation-fill-mode: both;
}

/* Retrasos escalonados para la animación */
.certificate-card:nth-child(1) { animation-delay: 0.1s; }
.certificate-card:nth-child(2) { animation-delay: 0.2s; }
.certificate-card:nth-child(3) { animation-delay: 0.3s; }
.certificate-card:nth-child(4) { animation-delay: 0.4s; }
.certificate-card:nth-child(5) { animation-delay: 0.5s; }
.certificate-card:nth-child(6) { animation-delay: 0.6s; }

/* Efecto de pulso sutil en el botón */
@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(48, 140, 206, 0.4);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(48, 140, 206, 0);
  }
}

.btn-certificate:focus {
  outline: none;
  animation: pulse 2s infinite;
}

/* Mejoras de accesibilidad */
.certificate-card:focus-within {
  outline: 2px solid var(--skills-accent);
  outline-offset: 2px;
}

/* Efecto de carga para imágenes */
.cert-thumbnail {
  background: linear-gradient(90deg, 
    rgba(255, 255, 255, 0.1) 0%, 
    rgba(255, 255, 255, 0.2) 50%, 
    rgba(255, 255, 255, 0.1) 100%);
  background-size: 200% 100%;
}

.cert-thumbnail[src=""] {
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* ===== ESTILOS PARA BOTÓN VER MÁS CERTIFICADOS ===== */

/* Contenedor del botón Ver más (reutiliza estilos de proyectos) */
.ver-mas-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 3rem;
  padding: 0 1rem;
}

/* Botón Ver más certificados */
.btn-ver-mas {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--skills-accent);
  border: 2px solid var(--skills-accent);
  padding: 16px 32px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: var(--transition-smooth);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

/* Icono de flecha */
.arrow-icon {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  transition: var(--transition-smooth);
}

/* Efecto hover del botón Ver más certificados */
.btn-ver-mas:hover {
  background: var(--skills-accent);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(48, 140, 206, 0.4);
}

.btn-ver-mas:hover .arrow-icon {
  transform: translate(3px, -3px);
}

/* Efecto de click */
.btn-ver-mas:active {
  transform: translateY(-1px);
}

/* Responsive para botón Ver más certificados */
@media (max-width: 768px) {
  .ver-mas-container {
    margin-top: 2rem;
  }
  
  .btn-ver-mas {
    padding: 14px 28px;
    font-size: 1rem;
  }
  
  .arrow-icon {
    width: 16px;
    height: 16px;
  }
}

@media (max-width: 480px) {
  .btn-ver-mas {
    padding: 12px 24px;
    font-size: 0.95rem;
  }
}