/* ── VARIABLES Y BASE (PROYECTOS) ── */
:root {
  --bg: #0a0a0c; --bg2: #111116; --bg3: #18181f;
  --accent: #00e5ff; --accent2: #ff6b35; --accent3: #a855f7;
  --text: #e8e8ec; --muted: #7a7a8a; --border: rgba(255,255,255,0.07);
  --font-display: 'Syne', sans-serif; --font-mono: 'JetBrains Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg); color: var(--text);
  font-family: var(--font-mono); font-size: 15px; line-height: 1.7; overflow-x: hidden;
}

body::before {
  content: ''; position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.035'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 0; opacity: 0.6;
}

/* ── NAVEGACIÓN Y FOOTER ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100; display: flex;
  align-items: center; justify-content: space-between; padding: 1.2rem 4rem;
  background: rgba(10,10,12,0.85); backdrop-filter: blur(16px); border-bottom: 0.5px solid var(--border);
}
.nav-logo { font-family: var(--font-display); font-weight: 800; font-size: 1.1rem; color: var(--text); text-decoration: none; }
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a { font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); text-decoration: none; transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--accent); }

/* Botón hamburguesa — solo visible en móvil */
.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  flex-direction: column; gap: 5px; padding: 4px; z-index: 250; position: relative;
}
.nav-toggle span {
  display: block; width: 22px; height: 1.5px; background: var(--text);
  transition: all 0.3s; transform-origin: center;
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -5px); }

footer {
  padding: 2rem 4rem; border-top: 0.5px solid var(--border); display: flex;
  justify-content: space-between; align-items: center; font-size: 0.68rem;
  color: var(--muted); letter-spacing: 0.08em; position: relative; z-index: 1;
}

/* ── CABECERA Y FILTROS ── */
.page-header { padding: 9rem 4rem 4rem; position: relative; z-index: 1; border-bottom: 0.5px solid var(--border); }
.page-header::before { content: ''; position: absolute; inset: 0; background-image: linear-gradient(rgba(0,229,255,0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(0,229,255,0.025) 1px, transparent 1px); background-size: 60px 60px; pointer-events: none; }
.breadcrumb { font-size: 0.68rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--muted); margin-bottom: 1.5rem; display: flex; gap: 0.75rem; }
.breadcrumb a { color: var(--accent); text-decoration: none; }
h1 { font-family: var(--font-display); font-weight: 800; font-size: clamp(2.5rem, 4vw, 3.8rem); line-height: 1; margin-bottom: 1rem; }
.page-subtitle { font-size: 0.85rem; color: var(--muted); max-width: 480px; line-height: 1.8; }

.filters-bar { padding: 2rem 4rem; display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; border-bottom: 0.5px solid var(--border); position: relative; z-index: 1; }
.filter-label { font-size: 0.65rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--muted); }
.filter-btn { padding: 0.45rem 1.1rem; background: transparent; border: 0.5px solid var(--border); border-radius: 2px; color: var(--muted); font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase; cursor: pointer; transition: all 0.2s; }
.filter-btn:hover { border-color: rgba(0,229,255,0.3); color: var(--text); }
.filter-btn.active { background: var(--accent); border-color: var(--accent); color: #000; }
.project-count { margin-left: auto; font-size: 0.68rem; color: var(--muted); }
.project-count span { color: var(--accent); }

/* ── TARJETAS DE PORTFOLIO ── */
.projects-section { padding: 3rem 4rem 6rem; position: relative; z-index: 1; }
.projects-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }

.project-card { background: var(--bg2); border: 0.5px solid var(--border); border-radius: 4px; overflow: hidden; display: flex; flex-direction: column; transition: all 0.3s; position: relative; }
.project-card:hover { border-color: rgba(0,229,255,0.25); transform: translateY(-3px); }
.project-card.featured { grid-column: 1 / -1; flex-direction: row; }
.project-card.wip { border-color: rgba(168, 85, 247, 0.3); }
.project-card.wip:hover { border-color: rgba(168, 85, 247, 0.6); }

.card-media { background: var(--bg3); display: flex; align-items: center; justify-content: center; border-bottom: 0.5px solid var(--border); font-size: 3rem; position: relative; overflow: hidden; min-height: 180px; }
.card-media::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(0,229,255,0.04), transparent 60%); }
.project-card.featured .card-media { width: 320px; min-width: 320px; min-height: unset; border-bottom: none; border-right: 0.5px solid var(--border); font-size: 4rem; }

.wip-badge { position: absolute; top: 12px; right: 12px; background: rgba(168,85,247,0.15); border: 0.5px solid rgba(168,85,247,0.5); color: #c084fc; font-size: 0.6rem; letter-spacing: 0.14em; text-transform: uppercase; padding: 0.3rem 0.7rem; border-radius: 2px; display: flex; align-items: center; gap: 0.4rem; }
.wip-badge::before { content: ''; width: 5px; height: 5px; background: #c084fc; border-radius: 50%; animation: pulse 1.5s ease-in-out infinite; }

.card-content { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; gap: 0.85rem; }
.card-category { font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); }
.card-category.software { color: var(--accent2); } .card-category.ia { color: var(--accent3); }
.card-title { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; }
.card-desc { font-size: 0.78rem; color: var(--muted); line-height: 1.8; flex: 1; }
.card-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tag { font-size: 0.62rem; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.22rem 0.65rem; border: 0.5px solid var(--border); border-radius: 2px; color: var(--muted); }

.card-footer { display: flex; align-items: center; justify-content: space-between; padding-top: 0.75rem; border-top: 0.5px solid var(--border); margin-top: auto; }
.card-date { font-size: 0.65rem; color: var(--muted); letter-spacing: 0.08em; }
.card-link { font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); text-decoration: none; display: flex; align-items: center; gap: 0.4rem; transition: gap 0.2s; }
.card-link:hover { gap: 0.75rem; }

.project-card.hidden { opacity: 0; visibility: hidden; pointer-events: none; position: absolute; }

@keyframes cardIn {
  from { opacity: 0; transform: scale(0.95) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.back-link { display: inline-flex; align-items: center; gap: 0.5rem; font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); text-decoration: none; padding: 1.2rem 4rem; border-top: 0.5px solid var(--border); transition: color 0.2s; position: relative; z-index: 1; }
.back-link:hover { color: var(--accent); }

/* ── ANIMACIONES Y RESPONSIVE ── */
.fade-in { opacity: 0; transform: translateY(16px); animation: fadeUp 0.6s ease forwards; }
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
.d1 { animation-delay: 0.1s; } .d2 { animation-delay: 0.2s; } .d3 { animation-delay: 0.3s; }

/* ─── MENÚ MÓVIL YOUTUBE-STYLE ─── */
.mobile-menu-backdrop {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.6); z-index: 150;
  opacity: 0; transition: opacity 0.25s;
}
.mobile-menu-backdrop.open { opacity: 1; }

@media (max-width: 900px) {
  nav { padding: 1rem 1.5rem; }
  .nav-toggle { display: flex; }
  .mobile-menu-backdrop { display: block; }

  /* Panel lateral */
  .nav-links {
    display: flex;
    position: fixed; top: 0; right: 0; bottom: 0;
    width: 280px;
    background: var(--bg); border-left: 0.5px solid var(--border);
    flex-direction: column; gap: 0; padding: 4.5rem 1.5rem 2rem;
    transform: translateX(100%); transition: transform 0.3s ease;
    z-index: 200; overflow-y: auto; list-style: none;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links li { }
  .nav-links a { display: block; padding: 1rem 0; font-size: 1rem; color: var(--text); border-bottom: 0.5px solid var(--border); }
  .nav-links a:hover, .nav-links a.active { color: var(--accent); }

  .page-header { padding: 7rem 1.5rem 3rem; }
  .filters-bar { padding: 1.5rem; }
  .projects-section { padding: 2rem 1.5rem 4rem; }
  .projects-grid { grid-template-columns: 1fr; }
  .project-card.featured { flex-direction: column; }
  .project-card.featured .card-media { width: 100%; min-width: unset; border-right: none; border-bottom: 0.5px solid var(--border); }
  .back-link { padding: 1rem 1.5rem; }
  footer { flex-direction: column; gap: 0.5rem; text-align: center; }
}

/* ── IMÁGENES EN TARJETAS ── */
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  position: absolute;
  inset: 0;
}