/* ===============  Portafolio (CSS)  =============== */
/* Variables de colores y layout */
:root {
  --primary-color: #00f0ff;
  --secondary-color: #7b2dff;
  --accent-color: #00ffaa;
  --dark-bg: #0a0a1a;
  --darker-bg: #050510;
  --light-text: #f0f0f0;
  --transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);

  /* Altura del header fijo (se ajusta por JS) */
  --header-h: 96px;
}

/* Reset básico */
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
  background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
  color: var(--light-text);
  min-height: 100vh;
  overflow-x: hidden;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Cuando el modal está abierto, bloquea el scroll */
body.modal-open { position: fixed; width: 100%; }

/* Si el header es fixed/sticky, empuja el contenido */
.has-fixed-header .portfolio-container {
  margin-top: calc(var(--header-h, 96px) + 16px);
}

/* Contenedor principal */
.portfolio-container { max-width: 1400px; margin: 0 auto; padding: 2rem; }

/* Cabecera */
.portfolio-header { text-align: center; margin-bottom: 3rem; position: relative; z-index: 10; }
.portfolio-title {
  font-size: 3.5rem; margin-bottom: 1rem;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text; background-clip: text; color: transparent; font-weight: 700;
}
.portfolio-subtitle { font-size: 1.2rem; opacity: .8; max-width: 700px; margin: 0 auto; }

/* Filtros */
.portfolio-filters { display: flex; justify-content: center; gap: 15px; margin-bottom: 40px; flex-wrap: wrap; }
.filter-btn {
  background: transparent; color: var(--light-text);
  border: 1px solid var(--secondary-color);
  padding: 10px 25px; border-radius: 50px; cursor: pointer; transition: var(--transition);
  font-size: 1rem; display: flex; align-items: center; gap: 8px;
}
.filter-btn.active, .filter-btn:hover { background: var(--secondary-color); color: #fff; box-shadow: 0 0 15px rgba(123,45,255,.5); }

/* Grid de proyectos */
.portfolio-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px; padding: 20px 0;
}
.project-card {
  position: relative; border-radius: 15px; overflow: hidden;
  background: rgba(10,10,26,.6);
  border: 1px solid rgba(123,45,255,.1);
  transition: var(--transition); transform: translateY(0);
  box-shadow: 0 5px 15px rgba(0,0,0,.1);
}
.project-card:hover { transform: translateY(-10px); box-shadow: 0 15px 30px rgba(0,240,255,.1); border-color: rgba(123,45,255,.3); }

.project-media-container {
  position: relative; height: 250px; overflow: hidden; display: flex; align-items: center; justify-content: center; background: var(--darker-bg);
}
.portfolio-media { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.project-card:hover .portfolio-media { transform: scale(1.05); }
.play-icon { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); color: #fff; font-size: 2rem; opacity: .8; pointer-events: none; z-index: 2; }

.project-info { padding: 20px; }
.project-info h3 { margin: 0 0 10px 0; font-size: 1.5rem; }
.project-description { font-size: .95rem; margin-bottom: 15px; opacity: .8; }

.project-meta { display: flex; justify-content: space-between; font-size: .85rem; margin-bottom: 15px; opacity: .7; }
.project-tech { display: flex; flex-wrap: wrap; gap: 8px; font-size: .85rem; margin-bottom: 15px; }
.project-tech span { background: rgba(0,240,255,.1); color: var(--primary-color); padding: 3px 10px; border-radius: 20px; }

.demo-btn {
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  color: var(--darker-bg); border: none; padding: 10px 20px; border-radius: 50px;
  font-weight: 600; cursor: pointer; transition: var(--transition); width: 100%; font-size: 1rem;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.demo-btn:hover { transform: translateY(-3px); box-shadow: 0 10px 20px rgba(0,240,255,.3); }

/* Modal */
.demo-modal {
  position: fixed; inset: 0; background: rgba(5,5,16,.95);
  z-index: 1000; display: none; align-items: center; justify-content: center;
  backdrop-filter: blur(10px); opacity: 0; transition: opacity .3s ease;
}
.demo-modal.active { display: flex; opacity: 1; }
.modal-overlay { position: absolute; inset: 0; }
.modal-container {
  width: 90%; max-width: 1000px; background: rgba(10,10,26,.95);
  border-radius: 20px; border: 1px solid rgba(123,45,255,.3);
  padding: 30px; position: relative; z-index: 2; box-shadow: 0 0 40px rgba(0,240,255,.2);
  max-height: 90vh; overflow-y: auto;
}
.close-modal {
  position: absolute; top: 20px; right: 20px; background: transparent; border: none; color: var(--light-text);
  font-size: 2rem; cursor: pointer; transition: var(--transition); width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border-radius: 50%; z-index: 3;
}
.close-modal:hover { color: var(--primary-color); background: rgba(0,240,255,.1); transform: rotate(90deg); }

.modal-content { position: relative; }
.modal-header { margin-bottom: 20px; }
.modal-header h2 { margin: 0; color: var(--primary-color); }
.tech-tags { display: flex; gap: 10px; flex-wrap: wrap; margin: 20px 0; }
.tech-tag { background: rgba(0,240,255,.1); color: var(--primary-color); padding: 5px 15px; border-radius: 20px; font-size: .9rem; }

.screen-pages { margin-top: 30px; }
.screen-page { display: none; }
.screen-page.active { display: block; }
.modal-media {
  width: 100%; max-height: 500px; object-fit: contain; border-radius: 10px; background: var(--darker-bg);
  border: 1px solid rgba(123,45,255,.2);
}
.page-caption { text-align: center; margin-top: 10px; font-size: 1.1rem; color: var(--accent-color); }

.demo-controls { display: flex; justify-content: space-between; align-items: center; margin-top: 20px; }
.control-btn {
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  color: var(--darker-bg); border: none; padding: 10px 25px; border-radius: 50px; font-weight: 600; cursor: pointer; transition: var(--transition);
  display: flex; align-items: center; gap: 8px;
}
.control-btn.outline { background: transparent; color: var(--primary-color); border: 2px solid var(--primary-color); }
.control-btn:hover { transform: translateY(-3px); box-shadow: 0 10px 20px rgba(0,240,255,.3); }
.control-btn.outline:hover { background: rgba(0,240,255,.1); }

.nav-dots { display: flex; gap: 10px; }
.nav-dot { width: 12px; height: 12px; border-radius: 50%; background: rgba(240,240,240,.2); cursor: pointer; transition: var(--transition); }
.nav-dot.active { background: var(--primary-color); transform: scale(1.2); }

/* Partículas */
.particles { position: fixed; inset: 0; z-index: 0; pointer-events: none; }

/* Responsive */
@media (max-width: 992px) {
  .portfolio-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
  .portfolio-title { font-size: 2.8rem; }
}
@media (max-width: 768px) {
  .portfolio-title { font-size: 2.2rem; }
  .portfolio-subtitle { font-size: 1rem; }
  .filter-btn { padding: 8px 15px; font-size: .9rem; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .project-media-container { height: 200px; }
}

.btn-visit-page {
  display: inline-block;
  margin: 10px auto;
  padding: 10px 20px;
  background: linear-gradient(90deg, #06b6d4, #3b82f6);
  color: #fff;
  border-radius: 8px;
  font-weight: bold;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-visit-page:hover {
  transform: translateY(-2px);
  box-shadow: 0px 4px 12px rgba(59, 130, 246, 0.4);
}