/* ==========================================================================
   INDEX.CSS - ESTILOS PARA PÁGINA PRINCIPAL
   ========================================================================== */

/* ==========================================================================
   HERO HEADER
   ========================================================================== */

.hero-header {
  min-height: 100vh;
  background: linear-gradient(135deg, 
    var(--background) 0%,
    color-mix(in srgb, var(--primary-color) 5%, var(--background)) 50%,
    color-mix(in srgb, var(--secondary-color) 3%, var(--background)) 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  padding: var(--spacing-xl) 0;
  overflow: hidden;
}

.hero-header::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) 15%, transparent) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, color-mix(in srgb, var(--secondary-color) 15%, transparent) 0%, transparent 50%);
  z-index: -1;
}

.hero-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  width: 100%;
  margin-bottom: var(--spacing-3xl);
}

/* ==========================================================================
   BRAND SECTION
   ========================================================================== */

.hero-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

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

.brand-logo svg {
  width: 60px;
  height: 60px;
  filter: drop-shadow(0 4px 8px color-mix(in srgb, var(--primary-color) 20%, transparent));
  transition: transform var(--transition-normal);
}

.brand-logo:hover svg {
  transform: scale(1.05) rotate(5deg);
}

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

.brand-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  background: linear-gradient(135deg, var(--text-primary), var(--primary-color));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin: 0;
  font-weight: 500;
}

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

.theme-toggle {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--accent-color);
  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: 20px;
  height: 20px;
  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);
}

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

.hero-main {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

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

.hero-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;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.6;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
   HERO STATS
   ========================================================================== */

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
}

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

.stat-number {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--primary-color);
  line-height: 1;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   SCROLL INDICATOR
   ========================================================================== */

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
}

.scroll-indicator:hover {
  transform: translateX(-50%) translateY(-5px);
  background: color-mix(in srgb, var(--primary-color) 10%, transparent);
}

.scroll-text {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.scroll-arrow {
  color: var(--primary-color);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-5px); }
  60% { transform: translateY(-3px); }
}

/* ==========================================================================
   MAIN DEMOS SECTION
   ========================================================================== */

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

.demos-intro {
  text-align: center;
  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);
}

.section-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ==========================================================================
   DEMOS GRID
   ========================================================================== */

.demos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
}

/* ==========================================================================
   DEMO CARDS
   ========================================================================== */

.demo-card {
  background: var(--surface);
  border-radius: var(--border-radius-large);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition-normal);
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  opacity: 0;
  transform: translateY(30px);
}

.demo-card.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

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

.demo-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px color-mix(in srgb, var(--primary-color) 15%, transparent);
  border-color: var(--primary-color);
}

/* ==========================================================================
   DEMO CARD VISUAL PREVIEWS
   ========================================================================== */

.demo-card__visual {
  height: 160px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, 
    color-mix(in srgb, var(--primary-color) 10%, var(--surface)),
    color-mix(in srgb, var(--secondary-color) 8%, var(--surface))
  );
}

.demo-preview {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

/* Preview específicos por tipo */
.demo-preview--container {
  gap: var(--spacing-sm);
}

.preview-box {
  height: 60px;
  border-radius: var(--border-radius);
  transition: all 0.8s ease;
  background: var(--primary-color);
}

.preview-box--large { width: 80px; }
.preview-box--medium { width: 60px; }
.preview-box--small { width: 40px; }

.demo-card:hover .preview-box {
  transform: scale(1.1);
  background: var(--secondary-color);
}

.demo-preview--has {
  flex-direction: column;
}

.preview-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  width: 120px;
}

.preview-input {
  height: 20px;
  background: var(--background);
  border-radius: calc(var(--border-radius) / 2);
  border: 2px solid var(--border-color);
  transition: all var(--transition-normal);
}

.preview-input--error {
  border-color: var(--error);
  background: color-mix(in srgb, var(--error) 10%, var(--background));
}

.preview-button {
  height: 25px;
  background: var(--primary-color);
  border-radius: calc(var(--border-radius) / 2);
  margin-top: var(--spacing-xs);
  transition: all var(--transition-normal);
}

.demo-card:hover .preview-button {
  background: var(--secondary-color);
}

.demo-preview--supports .preview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xs);
  width: 80px;
  height: 80px;
}

.grid-item {
  background: var(--primary-color);
  border-radius: var(--border-radius);
  transition: all var(--transition-normal);
}

.demo-card:hover .grid-item:nth-child(odd) {
  background: var(--secondary-color);
  transform: scale(1.1);
}

.demo-preview--color {
  gap: var(--spacing-md);
}

.color-circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  transition: all var(--transition-normal);
}

.color-circle--1 { background: var(--primary-color); }
.color-circle--2 { background: var(--secondary-color); }
.color-circle--3 { background: color-mix(in srgb, var(--primary-color) 50%, var(--secondary-color)); }

.demo-card:hover .color-circle {
  transform: scale(1.2);
}

.demo-preview--scroll {
  gap: var(--spacing-lg);
  align-items: center;
}

.scroll-track {
  width: 60px;
  height: 4px;
  background: var(--border-color);
  border-radius: 2px;
  position: relative;
}

.scroll-thumb {
  width: 20px;
  height: 6px;
  background: var(--primary-color);
  border-radius: 3px;
  position: absolute;
  top: -1px;
  animation: scrollMove 2s ease-in-out infinite;
}

@keyframes scrollMove {
  0%, 100% { left: 0; }
  50% { left: 40px; }
}

.rotating-element {
  width: 30px;
  height: 30px;
  background: var(--secondary-color);
  border-radius: 50%;
  animation: rotate 2s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.demo-preview--glass {
  position: relative;
}

.glass-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  opacity: 0.3;
}

.glass-overlay {
  width: 80px;
  height: 80px;
  background: color-mix(in srgb, var(--background) 20%, transparent);
  backdrop-filter: blur(10px);
  border: 1px solid color-mix(in srgb, var(--border-color) 50%, transparent);
  border-radius: var(--border-radius);
  position: relative;
  z-index: 1;
}

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

.demo-card__content {
  padding: var(--spacing-xl);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.demo-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
  gap: var(--spacing-md);
}

.demo-card__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.2;
}

.demo-card__badge {
  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;
  flex-shrink: 0;
}

.demo-card__description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
  flex: 1;
}

.demo-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
}

.tech-tag {
  background: color-mix(in srgb, var(--secondary-color) 20%, 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 var(--border-color);
}

.demo-card__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--primary-color);
  color: var(--brand-white);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-normal);
  margin-top: auto;
}

.demo-card__link:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--primary-color) 30%, transparent);
  color: var(--brand-white);
}

.demo-card__arrow {
  transition: transform var(--transition-fast);
}

.demo-card__link:hover .demo-card__arrow {
  transform: translate(2px, -2px);
}

/* ==========================================================================
   CTA SECTION
   ========================================================================== */

.cta-section {
  background: linear-gradient(135deg, 
    color-mix(in srgb, var(--primary-color) 8%, var(--surface)),
    color-mix(in srgb, var(--secondary-color) 5%, var(--surface))
  );
  border-radius: var(--border-radius-large);
  border: 1px solid var(--border-color);
  padding: var(--spacing-3xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::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;
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.cta-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-actions {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
}

.cta-button {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-normal);
  font-size: var(--font-size-base);
}

.cta-button--primary {
  background: var(--primary-color);
  color: var(--brand-white);
  border: 2px solid var(--primary-color);
}

.cta-button--primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 10px 25px color-mix(in srgb, var(--primary-color) 25%, transparent);
  color: var(--brand-white);
}

.cta-button--secondary {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.cta-button--secondary:hover {
  background: var(--primary-color);
  color: var(--brand-white);
  transform: translateY(-3px);
  box-shadow: 0 10px 25px color-mix(in srgb, var(--primary-color) 25%, transparent);
}

/* ==========================================================================
   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);
}

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

@media (max-width: 768px) {
  .hero-content {
    flex-direction: column;
    gap: var(--spacing-xl);
    text-align: center;
  }
  
  .hero-brand {
    justify-content: center;
  }
  
  .hero-title {
    font-size: var(--font-size-2xl);
  }
  
  .hero-stats {
    gap: var(--spacing-lg);
  }
  
  .stat-number {
    font-size: var(--font-size-xl);
  }
  
  .demos-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .cta-button {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }
  
  .footer__content {
    flex-direction: column;
    text-align: center;
  }
  
  .footer__brand {
    flex-direction: column;
  }
}

@media (max-width: 576px) {
  .hero-header {
    padding: var(--spacing-lg) 0;
  }
  
  .brand-logo svg {
    width: 50px;
    height: 50px;
  }
  
  .brand-title {
    font-size: var(--font-size-xl);
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .cta-section {
    padding: var(--spacing-xl);
  }
  
  .demo-card__content {
    padding: var(--spacing-lg);
  }
}

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

@media (prefers-reduced-motion: reduce) {
  .demo-card,
  .brand-logo svg,
  .theme-toggle,
  .scroll-indicator,
  .cta-button {
    animation: none;
    transition: none;
  }
  
  .demo-card:hover,
  .cta-button:hover {
    transform: none;
  }
  
  .scroll-arrow,
  .scroll-thumb,
  .rotating-element {
    animation: none;
  }
}

@media (prefers-contrast: high) {
  .demo-card {
    border-width: 2px;
  }
  
  .theme-toggle {
    border-width: 3px;
  }
  
  .tech-tag,
  .demo-card__badge {
    border-width: 2px;
  }
}