/* ============================================================
   styles.css — SkillUP (Academia de Cursos Virtuales)
   Estética Monocromática & Tech Dark Premium
   Paleta Oficial: Royal/Electric Blue (#2563EB) + Lime Green (#4ADE80)
   100% Mobile & Responsive Optimization
   ============================================================ */

/* ── Reset & Scrollbar ───────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: #050505; }
::-webkit-scrollbar-thumb { background: #272730; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #2563EB; }

/* ── Radial Gradient Hero Background ────────────────────────── */
.bg-radial-gradient {
  background-color: #050505;
  background-image: 
    radial-gradient(at 0% 0%, rgba(37, 99, 235, 0.16) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(74, 222, 128, 0.12) 0px, transparent 50%),
    radial-gradient(at 50% 100%, rgba(37, 99, 235, 0.1) 0px, transparent 50%);
}

/* ── Barra de Navegación ─────────────────────────────────────── */
.nav-bg {
  background: transparent;
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
}
.nav-scrolled .nav-bg {
  background: rgba(10, 10, 14, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
}

/* ── Nav Links Responsive ───────────────────────────────────── */
.nav-desktop-links { display: none; }
.nav-desktop-links a { white-space: nowrap; }
.nav-mobile-btn { display: inline-flex; }
.nav-cta-btn { display: none; }

@media (min-width: 992px) {
  .nav-desktop-links { display: flex; }
  .nav-mobile-btn { display: none; }
  .nav-cta-btn { display: inline-flex; }
}

/* ── Trust Strip ────────────────────────────────────────────── */
.trust-strip-container {
  background: #0A0A0E;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* ── Botones de Filtro de Categoría ──────────────────────────── */
.cat-filters-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  max-w: 100%;
}

@media (max-width: 640px) {
  .cat-filters-wrap {
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: flex-start;
    padding-bottom: 6px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Firefox */
  }
  .cat-filters-wrap::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
  }
}

.cat-btn {
  padding: 9px 20px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 700;
  color: #A1A1AA;
  background: #101014;
  border: 1px solid rgba(255, 255, 255, 0.12);
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
  flex-shrink: 0;
}
.cat-btn:hover {
  color: #FFFFFF;
  border-color: rgba(74, 222, 128, 0.4);
  background: #18181F;
}
.cat-btn.active {
  color: #FFFFFF;
  background: #2563EB;
  border-color: #2563EB;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
}

/* ── Product Cards ───────────────────────────────────────────── */
.product-card {
  animation: fadeInUp 0.4s ease forwards;
}

/* ── Toast Component ─────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  background: #18181F;
  color: #FFFFFF;
  border: 1px solid rgba(74, 222, 128, 0.3);
  padding: 12px 20px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.toast-show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

@media (max-width: 640px) {
  .toast {
    bottom: 16px;
    left: 16px;
    right: 16px;
    text-align: center;
    font-size: 12px;
    padding: 10px 16px;
  }
}

/* ── Tablas Responsivas ──────────────────────────────────────── */
.overflow-x-auto {
  -webkit-overflow-scrolling: touch;
}

/* ── Animaciones ─────────────────────────────────────────────── */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.animate-fadeInUp {
  animation: fadeInUp 0.3s ease forwards;
}