/* --------- Portfolio Section --------- */

/* Variables de Tema Claro/Oscuro */
:root {
  --bg-dark: #090A20;
  --text-light: #eee;
  --card-bg: rgba(255,255,255,0.03);
  --accent: #CF621B;
  --accent-transparent: rgba(207, 98, 27, 0.2);
}

/* Sección Portfolio */
.portfolio {
  background: var(--bg-dark);
  color: var(--text-light);
  padding: 80px 0;
  position: relative;
  z-index: 2;
  transition: background-color 0.3s ease, color 0.3s ease;
}

body.dark .portfolio {
  background: #000000;
  color: #CF621B;
}

/* Contenedor principal: apila título, filtros y grid */
.portfolio .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* 1) Título */
.portfolio .section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  text-align: center;
  width: 100%;
  transition: color 0.3s ease;
}

body.dark .portfolio .section-title {
  color: #CF621B;
}

/* 2) Filtros justo debajo */
.portfolio .filters {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  justify-content: center;
  margin-bottom: 40px;
  width: 100%;
}

.portfolio .filter-btn {
  padding: 10px 25px;
  border: 1px solid #CF621B;
  border-radius: 30px;
  background: transparent;
  color: var(--text-light);
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1rem;
}

body.dark .portfolio .filter-btn {
  color: #CF621B;
  border: 1px solid #CF621B;
}

.portfolio .filter-btn.active,
.portfolio .filter-btn:hover {
  background: #CF621B;
  color: #090A20;
  border-color: #CF621B;
  box-shadow: 0 5px 15px rgba(207, 98, 27, 0.4);
}

body.dark .portfolio .filter-btn.active,
body.dark .portfolio .filter-btn:hover {
  background: #CF621B;
  color: #000000;
  box-shadow: 0 5px 15px rgba(207, 98, 27, 0.6);
}

/* 3) Grid de proyectos */
.portfolio .projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  width: 100%;
  margin-bottom: 40px;
  padding: 0;
}

/* Tarjetas */
.portfolio .project-card {
  background: var(--card-bg);
  border-radius: 15px;
  overflow: hidden;
  transition: all 0.3s ease;
  color: inherit;
  text-decoration: none;
  border: 1px solid #CF621B;
  position: relative;
}

body.dark .portfolio .project-card {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid #CF621B;
}

.portfolio .project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(207, 98, 27, 0.1) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 1;
}

.portfolio .project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(207, 98, 27, 0.4);
  border-color: #E9722C;
}

body.dark .portfolio .project-card:hover {
  box-shadow: 0 15px 30px rgba(207, 98, 27, 0.6);
  border-color: #E9722C;
}

.portfolio .project-card:hover::before {
  opacity: 1;
}

.portfolio .project-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 2px solid #CF621B;
  transition: border-color 0.3s ease;
}

.portfolio .project-card:hover img {
  border-bottom-color: #E9722C;
}

.portfolio .project-info {
  padding: 20px;
  text-align: center;
  position: relative;
  z-index: 2;
}

.portfolio .project-info h3 {
  margin: 0 0 10px;
  font-size: 1.25rem;
  color: #fff;
  transition: color 0.3s ease;
}

body.dark .portfolio .project-info h3 {
  color: #CF621B;
}

.portfolio .industry {
  display: inline-block;
  background: var(--accent-transparent);
  color: var(--accent);
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 0.9em;
  margin-bottom: 10px;
  border: 1px solid rgba(207, 98, 27, 0.3);
  transition: all 0.3s ease;
}

body.dark .portfolio .industry {
  background: rgba(207, 98, 27, 0.2);
  color: #CF621B;
  border: 1px solid rgba(207, 98, 27, 0.5);
}

.portfolio .project-card:hover .industry {
  background: rgba(207, 98, 27, 0.3);
  border-color: #CF621B;
}

.portfolio .testimonial {
  font-style: italic;
  opacity: 0.8;
  font-size: 0.95em;
  color: #ddd;
  transition: color 0.3s ease;
}

body.dark .portfolio .testimonial {
  color: rgba(207, 98, 27, 0.9);
}

/* Efecto de brillo al hacer hover */
.portfolio .project-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.7s ease;
  z-index: 1;
}

.portfolio .project-card:hover::after {
  left: 100%;
}

/* Responsive: móvil apila en una columna */
@media (max-width: 768px) {
  .portfolio .projects-grid {
      grid-template-columns: 1fr;
  }
  .portfolio .filters {
      justify-content: center;
  }
  
  .portfolio .filter-btn {
      padding: 8px 20px;
      font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .portfolio {
      padding: 60px 0;
  }
  
  .portfolio .section-title {
      font-size: 2rem;
  }
  
  .portfolio .project-info {
      padding: 15px;
  }
  
  .portfolio .project-info h3 {
      font-size: 1.1rem;
  }
}