/* ==========================================================================
   CONTROLES DE ANIMACIÓN
   ========================================================================== */

.animation-controls {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: color-mix(in srgb, var(--primary-color) 5%, var(--surface));
  border-radius: var(--border-radius-large);
  border: 1px solid var(--border-color);
}

.animation-toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--primary-color);
  color: var(--brand-white);
  border: none;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  font-size: var(--font-size-base);
  position: relative;
  overflow: hidden;
}

.animation-toggle:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px color-mix(in srgb, var(--primary-color) 30%, transparent);
}

.animation-toggle:active {
  transform: translateY(0);
}

/* Estados del botón */
.animation-toggle.active .animation-icon--play {
  opacity: 0;
  transform: scale(0.5);
}

.animation-toggle.active .animation-icon--pause {
  opacity: 1;
  transform: scale(1);
}

.animation-toggle:not(.active) .animation-icon--play {
  opacity: 1;
  transform: scale(1);
}

.animation-toggle:not(.active) .animation-icon--pause {
  opacity: 0;
  transform: scale(0.5);
}

.animation-icon {
  position: absolute;
  left: var(--spacing-md);
  transition: all var(--transition-fast);
  transform-origin: center;
}

.animation-text {
  margin-left: 24px; /* Espacio para el icono */
  transition: all var(--transition-fast);
}

/* Botón pausado */
.animation-toggle:not(.active) {
  background: var(--text-muted);
}

.animation-toggle:not(.active):hover {
  background: var(--primary-color);
}

.animation-toggle:not(.active) .animation-text::after {
  content: ' ▶️';
}

.animation-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  text-align: center;
}

.info-text {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 500;
}

.info-status {
  font-size: var(--font-size-xs);
  color: var(--primary-color);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   THEME TOGGLE (REUTILIZABLE)
   ========================================================================== */

.theme-toggle {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--surface);
  border: 2px solid var(--border-color);
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--transition-normal);
  overflow: hidden;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--primary-color);
  border-color: var(--primary-color);
  transform: scale(1.05);
  box-shadow: 0 8px 25px color-mix(in srgb, var(--primary-color) 30%, transparent);
}

.theme-toggle:hover .theme-toggle__icon {
  color: var(--brand-white);
}

.theme-toggle:active {
  transform: scale(0.95);
}

.theme-toggle__icon {
  position: absolute;
  width: 18px;
  height: 18px;
  color: var(--text-primary);
  transition: all var(--transition-normal);
  transform-origin: center;
}

/* Estados del tema */
:root[data-theme="light"] .theme-toggle__icon--sun,
:root:not([data-theme]) .theme-toggle__icon--sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

:root[data-theme="light"] .theme-toggle__icon--moon,
:root:not([data-theme]) .theme-toggle__icon--moon {
  opacity: 0;
  transform: rotate(180deg) scale(0.5);
}

:root[data-theme="dark"] .theme-toggle__icon--sun {
  opacity: 0;
  transform: rotate(-180deg) scale(0.5);
}

:root[data-theme="dark"] .theme-toggle__icon--moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* Estados de accesibilidad */
.theme-toggle:focus-visible {
  outline: 3px solid var(--primary-color);
  outline-offset: 3px;
}

.theme-toggle[aria-pressed="true"] {
  background: var(--primary-color);
  border-color: var(--primary-color);
}

.theme-toggle[aria-pressed="true"] .theme-toggle__icon {
  color: var(--brand-white);
}

/* ==========================================================================
   CONTAINER QUERIES CSS - Demo específico
   Colores de brand: #2448A6 (azul) y #F5B841 (dorado)
   ========================================================================== */

/* ==========================================================================
   DEMO HEADER Y NAVEGACIÓN
   ========================================================================== */

.demo-header {
  background: var(--background);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  backdrop-filter: blur(10px);
  padding: var(--spacing-lg) 0;
}

.demo-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
}

.back-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: all var(--transition-fast);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius);
  border: 1px solid transparent;
}

.back-link:hover {
  color: var(--primary-color);
  background: color-mix(in srgb, var(--primary-color) 8%, transparent);
  border-color: var(--primary-color);
  transform: translateX(-2px);
}

.back-link svg {
  transition: transform var(--transition-fast);
}

.back-link:hover svg {
  transform: translateX(-2px);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.brand-logo-small {
  flex-shrink: 0;
}

.brand-logo-small svg {
  filter: drop-shadow(0 2px 4px color-mix(in srgb, var(--primary-color) 20%, transparent));
  transition: transform var(--transition-normal);
}

.brand-logo-small:hover svg {
  transform: scale(1.05);
}

.brand-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--font-size-base);
}

/* ==========================================================================
   MAIN CONTENT
   ========================================================================== */

.demo-main {
  padding: var(--spacing-3xl) 0;
}

/* ==========================================================================
   DEMO HERO SECTION
   ========================================================================== */

.demo-hero {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, 
    color-mix(in srgb, var(--primary-color) 5%, var(--background)) 0%,
    color-mix(in srgb, var(--secondary-color) 3%, var(--background)) 100%
  );
  border-radius: var(--border-radius-large);
  position: relative;
  overflow: hidden;
}

.demo-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, color-mix(in srgb, var(--primary-color) 10%, transparent) 0%, transparent 70%),
    radial-gradient(circle at 80% 20%, color-mix(in srgb, var(--secondary-color) 10%, transparent) 0%, transparent 70%);
  z-index: -1;
}

.demo-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.badge-text {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.badge-tag {
  background: var(--primary-color);
  color: var(--brand-white);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.demo-hero__title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.1;
}

.title-highlight {
  display: block;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 900;
  margin-top: var(--spacing-sm);
}

.demo-hero__description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 800px;
  margin: 0 auto var(--spacing-2xl);
}

.demo-hero__features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  max-width: 600px;
  margin: 0 auto;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.feature-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.feature-text {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  text-align: left;
}

.feature-text strong {
  color: var(--text-primary);
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.feature-text span {
  color: var(--text-muted);
  font-size: var(--font-size-xs);
}

/* ==========================================================================
   INTERACTIVE SECTION
   ========================================================================== */

.interactive-section {
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  text-align: center;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -8px;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 2px;
}

.section-subtitle {
  display: block;
  font-size: var(--font-size-base);
  font-weight: 400;
  color: var(--text-secondary);
  margin-top: var(--spacing-sm);
}

/* ==========================================================================
   CONTAINER QUERIES DEMO SHOWCASE
   ========================================================================== */

.demo-showcase {
  background: linear-gradient(135deg, 
    color-mix(in srgb, var(--primary-color) 8%, var(--surface)),
    color-mix(in srgb, var(--secondary-color) 5%, var(--surface))
  );
  padding: var(--spacing-2xl);
  border-radius: var(--border-radius-large);
  border: 1px solid var(--border-color);
  margin: var(--spacing-xl) 0;
  position: relative;
  overflow: hidden;
}

.demo-showcase::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, color-mix(in srgb, var(--primary-color) 5%, transparent) 0%, transparent 70%);
  z-index: -1;
}

/* CONTAINER WRAPPER - AQUÍ ESTÁ LA MAGIA */
.container-wrapper {
  /* CONTAINER QUERY CONTEXT */
  container-type: inline-size;
  container-name: card-container;
  
  /* ANIMACIÓN AUTOMÁTICA INFINITA (CONTROLABLE) */
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  transition: max-width var(--transition-slow);
  position: relative;
}

/* Clase para activar animación */
.container-wrapper.animated {
  animation: containerResize 8s ease-in-out infinite;
}

/* Clase para pausar animación */
.container-wrapper.paused {
  animation-play-state: paused;
}

/* ANIMACIÓN QUE CAMBIA EL TAMAÑO DEL CONTENEDOR */
@keyframes containerResize {
  0%, 100% { max-width: 100%; }    /* Desktop full */
  25%      { max-width: 600px; }   /* Tablet */
  50%      { max-width: 450px; }   /* Móvil grande */
  75%      { max-width: 300px; }   /* Móvil pequeño */
}

/* Indicador visual del tamaño actual */
.container-wrapper::before {
  content: 'Tamaño: 100% (Desktop)';
  position: absolute;
  top: -50px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-color);
  color: var(--brand-white);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--border-radius);
  font-size: var(--font-size-xs);
  font-weight: 600;
  z-index: 10;
  opacity: 0.9;
  transition: all var(--transition-normal);
}

/* Indicadores dinámicos según container query */
@container card-container (max-width: 399px) {
  .container-wrapper::before {
    content: 'Tamaño: 300px (Móvil pequeño)';
    background: var(--error);
  }
}

@container card-container (min-width: 400px) and (max-width: 549px) {
  .container-wrapper::before {
    content: 'Tamaño: 450px (Móvil)';
    background: var(--warning);
  }
}

@container card-container (min-width: 550px) and (max-width: 799px) {
  .container-wrapper::before {
    content: 'Tamaño: 600px (Tablet)';
    background: var(--success);
  }
}

@container card-container (min-width: 800px) {
  .container-wrapper::before {
    content: 'Tamaño: 100% (Desktop)';
    background: var(--primary-color);
  }
}

/* ==========================================================================
   RESPONSIVE CARD - CORAZÓN DEL DEMO
   ========================================================================== */

.responsive-card {
  background: var(--background);
  border-radius: var(--border-radius-large);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  
  /* LAYOUT POR DEFECTO: VERTICAL (MOBILE-FIRST) */
  display: flex;
  flex-direction: column;
  position: relative;
}

.responsive-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 25px 50px color-mix(in srgb, var(--primary-color) 20%, transparent);
}

/* ==========================================================================
   CARD IMAGE
   ========================================================================== */

.card-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(45deg, 
    var(--primary-color), 
    var(--secondary-color), 
    color-mix(in srgb, var(--primary-color) 70%, var(--secondary-color) 30%)
  );
  background-size: 300% 300%;
  animation: gradientShift 6s ease infinite;
  position: relative;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.image-overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--brand-white);
  text-align: center;
  z-index: 2;
}

.image-icon {
  font-size: 3rem;
  opacity: 0.8;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.image-text {
  font-weight: 700;
  font-size: var(--font-size-lg);
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

/* ==========================================================================
   CARD CONTENT
   ========================================================================== */

.card-content {
  padding: var(--spacing-xl);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.card-title {
  /* TIPOGRAFÍA FLUIDA CON CONTAINER QUERY UNITS */
  font-size: clamp(1.25rem, 3cqw + 1rem, 2rem);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.2;
}

.card-badges {
  display: flex;
  gap: var(--spacing-xs);
}

.card-badge {
  background: var(--secondary-color);
  color: var(--text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.card-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  flex: 1;
}

.card-description {
  /* TEXTO FLUIDO CON CQW UNITS */
  font-size: clamp(0.875rem, 2cqw + 0.75rem, 1.125rem);
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* ==========================================================================
   CARD STATS
   ========================================================================== */

.card-stats {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-md) 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  flex: 1;
}

.stat-value {
  font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', monospace;
  font-weight: 700;
  font-size: clamp(0.875rem, 2cqw + 0.5rem, 1rem);
  color: var(--primary-color);
}

.stat-label {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

/* ==========================================================================
   TECH TAGS
   ========================================================================== */

.card-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.tech-tag {
  background: color-mix(in srgb, var(--primary-color) 15%, var(--surface));
  color: var(--text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: calc(var(--border-radius) / 2);
  font-size: var(--font-size-xs);
  font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', monospace;
  font-weight: 500;
  border: 1px solid color-mix(in srgb, var(--primary-color) 30%, var(--border-color));
}

/* ==========================================================================
   CARD ACTIONS
   ========================================================================== */

.card-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-top: auto;
}

.card-button {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 2px solid;
  font-size: clamp(0.875rem, 1.5cqw + 0.75rem, 1rem);
  flex: 1;
  justify-content: center;
}

.card-button--primary {
  background: var(--primary-color);
  color: var(--brand-white);
  border-color: var(--primary-color);
}

.card-button--primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-button--secondary {
  background: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.card-button--secondary:hover {
  background: var(--primary-color);
  color: var(--brand-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ==========================================================================
   CONTAINER QUERY BREAKPOINTS - LA MAGIA
   ========================================================================== */

/* TABLET: ≥ 600px - Layout horizontal */
@container card-container (min-width: 600px) {
  .responsive-card {
    flex-direction: row;
    min-height: 300px;
  }
  
  .card-image {
    width: 40%;
    height: auto;
    min-height: 300px;
  }
  
  .card-content {
    width: 60%;
    padding: var(--spacing-2xl);
  }
  
  .card-title {
    font-size: clamp(1.5rem, 4cqw, 2.2rem);
  }
  
  .card-description {
    font-size: clamp(1rem, 2.5cqw + 0.75rem, 1.25rem);
  }
  
  .card-stats {
    flex-direction: row;
  }
  
  .card-actions {
    flex-direction: row;
  }
}

/* DESKTOP: ≥ 800px - Layout expandido */
@container card-container (min-width: 800px) {
  .card-image {
    width: 45%;
  }
  
  .card-content {
    width: 55%;
    padding: var(--spacing-3xl);
  }
  
  .card-title {
    font-size: clamp(1.75rem, 5cqw, 2.5rem);
  }
  
  .card-title::after {
    content: ' ✨';
    color: var(--secondary-color);
  }
  
  .card-description {
    font-size: clamp(1.125rem, 3cqw + 0.75rem, 1.5rem);
  }
  
  .card-button {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: 1.125rem;
  }
  
  .image-icon {
    font-size: 4rem;
  }
  
  .image-text {
    font-size: var(--font-size-xl);
  }
}

/* MÓVIL PEQUEÑO: < 400px - Layout compacto */
@container card-container (max-width: 399px) {
  .card-content {
    padding: var(--spacing-lg);
  }
  
  .card-image {
    height: 150px;
  }
  
  .card-stats {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .card-actions {
    flex-direction: column;
  }
  
  .card-button {
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
  }
  
  .tech-tag {
    font-size: 0.7rem;
    padding: 2px var(--spacing-xs);
  }
  
  .image-icon {
    font-size: 2rem;
  }
  
  .image-text {
    font-size: var(--font-size-base);
  }
}

/* ==========================================================================
   CODE SECTION
   ========================================================================== */

.code-section {
  margin-bottom: var(--spacing-3xl);
}

.code-examples {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.code-block {
  background: var(--surface);
  border-radius: var(--border-radius-large);
  border: 1px solid var(--border-color);
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-normal);
}

.code-block.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg) var(--spacing-xl);
  background: color-mix(in srgb, var(--primary-color) 8%, var(--surface));
  border-bottom: 1px solid var(--border-color);
}

.code-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.code-lang {
  background: var(--primary-color);
  color: var(--brand-white);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
}

.code-content {
  font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', monospace;
  font-size: var(--font-size-sm);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--background);
  padding: var(--spacing-xl);
  margin: 0;
  overflow-x: auto;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.code-content:hover {
  background: color-mix(in srgb, var(--secondary-color) 5%, var(--background));
}

/* ==========================================================================
   ADVANTAGES SECTION
   ========================================================================== */

.advantages-section {
  margin-bottom: var(--spacing-3xl);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.advantage-card {
  background: var(--surface);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-large);
  border: 1px solid var(--border-color);
  text-align: center;
  transition: all var(--transition-normal);
  opacity: 0;
  transform: translateY(20px);
}

.advantage-card.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.advantage-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.advantage-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-lg);
  display: block;
}

.advantage-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.advantage-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* ==========================================================================
   BROWSER SUPPORT SECTION
   ========================================================================== */

.support-section {
  margin-bottom: var(--spacing-3xl);
}

.browser-support {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.browser-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--surface);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}

.browser-item--supported {
  border-left: 4px solid var(--success);
}

.browser-item--limited {
  border-left: 4px solid var(--warning);
}

.browser-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.browser-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.browser-info strong {
  color: var(--text-primary);
  font-weight: 600;
}

.browser-info span {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.support-fallback {
  background: color-mix(in srgb, var(--warning) 10%, var(--surface));
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-large);
  border: 1px solid color-mix(in srgb, var(--warning) 30%, var(--border-color));
}

.support-fallback h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-base);
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 768px) {
  .demo-nav {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .header-brand {
    position: static;
    transform: none;
  }
  
  .demo-hero {
    padding: var(--spacing-xl) var(--spacing-lg);
  }
  
  .demo-hero__title {
    font-size: var(--font-size-2xl);
  }
  
  .demo-hero__features {
    grid-template-columns: 1fr;
  }
  
  .feature-item {
    flex-direction: column;
    text-align: center;
  }
  
  .advantages-grid {
    grid-template-columns: 1fr;
  }
  
  .browser-support {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .demo-header {
    padding: var(--spacing-md) 0;
  }
  
  .demo-showcase {
    padding: var(--spacing-lg);
  }
  
  .code-header {
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: flex-start;
  }
  
  .code-content {
    padding: var(--spacing-lg);
    font-size: var(--font-size-xs);
  }
  
  .browser-support {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   ACCESIBILIDAD Y PREFERENCIAS
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .container-wrapper,
  .responsive-card,
  .code-block,
  .advantage-card {
    animation: none;
    transition: none;
  }
  
  .responsive-card:hover,
  .advantage-card:hover {
    transform: none;
  }
  
  .image-icon {
    animation: none;
  }
  
  .card-image {
    animation: none;
    background-position: 0% 50%;
  }
}

@media (prefers-contrast: high) {
  .responsive-card,
  .code-block,
  .advantage-card {
    border-width: 2px;
  }
  
  .card-badge,
  .badge-tag,
  .tech-tag {
    border: 2px solid var(--text-primary);
  }
}

/* ==========================================================================
   FALLBACK PARA NAVEGADORES SIN CONTAINER QUERIES
   ========================================================================== */

@supports not (container-type: inline-size) {
  .demo-showcase::after {
    content: '⚠️ Tu navegador no soporta Container Queries. Usando Media Queries como fallback.';
    display: block;
    background: var(--warning);
    color: var(--background);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: center;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
  }
  
  /* Fallback usando media queries tradicionales */
  .container-wrapper {
    animation: none;
    max-width: 100%;
  }
  
  .container-wrapper::before {
    content: 'Usando Media Queries (Fallback)';
    background: var(--warning);
  }
  
  /* Responsive fallback */
  @media (min-width: 600px) {
    .responsive-card {
      flex-direction: row;
    }
    
    .card-image {
      width: 40%;
      height: auto;
      min-height: 300px;
    }
    
    .card-content {
      width: 60%;
    }
  }
  
  @media (min-width: 800px) {
    .card-image {
      width: 45%;
    }
    
    .card-content {
      width: 55%;
    }
  }
  
  @media (max-width: 399px) {
    .card-actions {
      flex-direction: column;
    }
    
    .card-stats {
      flex-direction: column;
    }
  }
}

/* ==========================================================================
   ANIMACIONES DE ENTRADA
   ========================================================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Aplicar animaciones de entrada */
.demo-hero {
  animation: fadeInUp 0.8s ease-out;
}

.responsive-card {
  animation: slideInLeft 0.8s ease-out 0.3s both;
}

.back-link {
  animation: slideInRight 0.6s ease-out 0.1s both;
}


/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
  background: var(--surface);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-2xl) 0;
  margin-top: var(--spacing-3xl);
}

.footer__content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.footer__logo svg {
  filter: drop-shadow(0 2px 4px color-mix(in srgb, var(--primary-color) 15%, transparent));
}

.footer__info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer__text {
  color: var(--text-secondary);
  margin: 0;
  font-size: var(--font-size-sm);
}

.footer__author {
  color: var(--primary-color);
  font-weight: 600;
}

.footer__subtitle {
  color: var(--text-muted);
  font-size: var(--font-size-xs);
  margin: 0;
  
  letter-spacing: 0.5px;
}

.footer__links {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.footer__link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--primary-color);
}

.footer__separator {
  color: var(--text-muted);
  font-size: var(--font-size-xs);
}