/**
 * BLUE FLAME - Estilos Principales
 * Arquitectura Ultraligera CSS3 Nativa - Rendimiento Máximo (Lighthouse 95+)
 */


/* ==========================================================================
   1. RESET Y BASE
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
  max-width: 100%;
  width: 100%;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: 1.6;
  color: var(--color-text-main);
  background-color: var(--color-bg-base);
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(0, 140, 247, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 100% 50%, rgba(124, 58, 237, 0.08) 0%, transparent 40%);
  background-attachment: fixed;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  max-width: 100%;
  width: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* Personalización del Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg-base);
}
::-webkit-scrollbar-thumb {
  background: #252836;
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

img, picture, svg, video {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

a:hover {
  color: var(--color-primary-light);
}

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

/* Accesibilidad y foco de teclado */
:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 3px;
}

.skip-to-content {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  z-index: 9999;
  border-radius: var(--radius-sm);
  font-weight: var(--font-weight-semibold);
  transition: top var(--transition-fast);
}
.skip-to-content:focus {
  top: 20px;
}

/* ==========================================================================
   2. TIPOGRAFÍA Y ENCABEZADOS
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-main);
  line-height: 1.2;
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: var(--font-weight-extrabold);
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
}

h3 {
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
}

h4 {
  font-size: var(--font-size-lg);
}

.text-gradient {
  background: var(--color-primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.text-gold-gradient {
  background: var(--color-gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.text-muted {
  color: var(--color-text-muted);
}

.text-center {
  text-align: center;
}

/* ==========================================================================
   3. LAYOUT Y CONTENEDORES
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.main-content {
  flex: 1 0 auto;
}

.section {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
  position: relative;
}

.section-title-wrap {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-subtitle {
  color: var(--color-primary-light);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
  display: block;
}

.section-title {
  margin-bottom: var(--space-4);
  position: relative;
}

.section-desc {
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
  color: var(--color-text-muted);
  font-size: var(--font-size-md);
}

/* Separador decorativo de sección */
.section-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: var(--space-12) 0;
  gap: var(--space-4);
}
.section-divider::before,
.section-divider::after {
  content: '';
  height: 1px;
  flex: 1;
  background: linear-gradient(90deg, transparent, rgba(0, 140, 247, 0.4), transparent);
}
.section-divider-icon {
  color: var(--color-primary-light);
  font-size: 1.25rem;
}

/* Grids fluidos */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-8);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: var(--space-8);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-6);
}

/* ==========================================================================
   4. BOTONES Y COMPONENTES INTERACTIVOS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 1.85rem;
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-base);
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
  line-height: 1;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary-gradient);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(0, 140, 247, 0.4);
}
.btn-primary:hover {
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 140, 247, 0.6);
}

.btn-gold {
  background: var(--color-gold-gradient);
  color: #ffffff;
  font-weight: var(--font-weight-bold);
  box-shadow: 0 4px 18px var(--color-gold-glow);
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.btn-gold:hover {
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(124, 58, 237, 0.65);
  border-color: rgba(255, 255, 255, 0.35);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--color-text-main);
  backdrop-filter: blur(10px);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--color-primary);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.55rem 1.25rem;
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: 1.1rem 2.4rem;
  font-size: var(--font-size-md);
}

/* Badges y etiquetas */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1;
}

.badge-blue {
  background: rgba(0, 140, 247, 0.15);
  color: var(--color-primary-light);
  border: 1px solid rgba(0, 140, 247, 0.3);
}

.badge-gold {
  background: rgba(124, 58, 237, 0.18);
  color: #c084fc;
  border: 1px solid rgba(168, 85, 247, 0.4);
}

.card-badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  line-height: 1;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  pointer-events: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.6);
}

.card-badge-special {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.75) 0%, rgba(37, 99, 235, 0.65) 100%);
  border: 1px solid rgba(192, 132, 252, 0.6);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5), 0 0 16px rgba(124, 58, 237, 0.5);
}

.card-badge-standard {
  background: rgba(10, 15, 25, 0.75);
  border: 1px solid rgba(0, 140, 247, 0.45);
  color: #e0f2fe;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5), 0 0 12px rgba(0, 140, 247, 0.3);
}

.card-badge-standard .badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #008cf7;
  box-shadow: 0 0 8px #008cf7;
  display: inline-block;
}

/* ==========================================================================
   5. TARJETAS Y CONTENEDORES GLASSMORPHISM
   ========================================================================== */
.card-glass {
  background: var(--color-bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition-smooth);
}
.card-glass:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-card), var(--shadow-blue-glow);
  transform: translateY(-4px);
}

/* ==========================================================================
   6. SKELETON LOADER (Zero Layout Shift)
   ========================================================================== */
.skeleton {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.03) 25%,
    rgba(255, 255, 255, 0.08) 50%,
    rgba(255, 255, 255, 0.03) 75%
  );
  background-size: 200% 100%;
  animation: skeletonShimmer 1.8s infinite linear;
  border-radius: var(--radius-md);
}

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

.skeleton-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-bg-surface);
  overflow: hidden;
  height: 480px;
  display: flex;
  flex-direction: column;
}

.skeleton-img {
  width: 100%;
  height: 240px;
}

.skeleton-body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

.skeleton-title {
  height: 24px;
  width: 80%;
}

.skeleton-text {
  height: 16px;
  width: 60%;
}

.skeleton-btn {
  height: 42px;
  width: 100%;
  margin-top: auto;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   7. FORMULARIOS E INPUTS
   ========================================================================== */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-2);
  color: var(--color-text-main);
}

.form-control {
  width: 100%;
  padding: 0.85rem 1.15rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: #ffffff;
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  background: rgba(0, 140, 247, 0.05);
  box-shadow: 0 0 10px rgba(0, 140, 247, 0.2);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

/* ==========================================================================
   8. BOTÓN FLOTANTE DE WHATSAPP
   ========================================================================== */
.floating-whatsapp {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background-color: var(--color-whatsapp);
  color: #ffffff;
  width: 58px;
  height: 58px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
  z-index: var(--z-sticky);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  text-decoration: none;
}

.floating-whatsapp:hover {
  transform: scale(1.1);
  color: #ffffff;
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.6);
}

.floating-whatsapp svg {
  width: 32px;
  height: 32px;
  fill: #ffffff;
}

/* ==========================================================================
   9. MEDIA QUERIES RESPONSIVE
   ========================================================================== */
@media (max-width: 768px) {
  .section {
    padding-top: var(--space-10);
    padding-bottom: var(--space-10);
  }
  
  .container {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .floating-whatsapp {
    bottom: 16px;
    right: 16px;
    width: 52px;
    height: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}