/* ============================================
   PORTFOLIO PROFESIONAL - CSS UNIFICADO OPTIMIZADO
   José Carlos Torralvo - 2025
   Optimizado para PageSpeed y arquitectura profesional
   ============================================ */

/* === VARIABLES CSS OPTIMIZADAS === */
:root {
  /* Colores principales */
  --primary: #3b82f6;
  --primary-dark: #1d4ed8;
  --primary-light: #60a5fa;

  /* Colores de fondo */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-card: #1e293b;

  /* Colores de texto */
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;

  /* Colores de estado */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #06b6d4;

  /* Tipografía */
  --font-primary: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Consolas", monospace;

  /* Espaciado */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Layout responsivo */
  --max-width: 1200px;
  --container-padding: 1rem;
  --section-gap: 5rem;

  /* Sombras optimizadas */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);

  /* Transiciones optimizadas */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  overflow-x: hidden;
  width: 100%;
}

body {
  font-family: var(--font-primary);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* === LAYOUT SISTEMA RESPONSIVO === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  width: 100%;
}

/* Sistema de grid responsive mejorado */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-cols-1 {
  grid-template-columns: 1fr;
}
.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Flex utilities optimizados */
.flex {
  display: flex;
}
.flex-col {
  flex-direction: column;
}
.flex-wrap {
  flex-wrap: wrap;
}
.items-center {
  align-items: center;
}
.justify-center {
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}
.gap-xs {
  gap: var(--space-xs);
}
.gap-sm {
  gap: var(--space-sm);
}
.gap-md {
  gap: var(--space-md);
}
.gap-lg {
  gap: var(--space-lg);
}
.gap-xl {
  gap: var(--space-xl);
}

/* === LOADING SCREEN === */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-content {
  text-align: center;
  color: var(--text-secondary);
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid var(--bg-tertiary);
  border-top: 3px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--space-md);
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* === NAVEGACIÓN OPTIMIZADA === */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  max-width: 100vw;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
  box-sizing: border-box;
}

.navbar.scrolled {
  background: rgba(15, 23, 42, 0.98);
  box-shadow: var(--shadow-lg);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  width: 100%;
  box-sizing: border-box;
}

.nav-logo .logo-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1.25rem;
}

.logo-text {
  background: var(--primary);
  color: white;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-md);
  font-weight: 700;
}

.nav-menu {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  background: rgba(59, 130, 246, 0.1);
}

/* === LANGUAGE SWITCHER === */
.language-switcher {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-left: var(--space-md);
  padding: var(--space-xs) var(--space-sm);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-fast);
}

.language-switcher:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(59, 130, 246, 0.3);
}

.lang-btn {
  width: 32px;
  height: 24px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: none;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  opacity: 0.6;
  position: relative;
}

.lang-btn.active {
  opacity: 1;
  box-shadow: 0 0 0 2px var(--primary);
}

.lang-btn:hover {
  opacity: 1;
  transform: scale(1.1);
}

.lang-btn img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

/* Loading state for language change */
.lang-switching {
  pointer-events: none;
  opacity: 0.7;
}

.lang-switching .lang-btn {
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.6;
  }
  50% {
    opacity: 1;
  }
}

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: var(--space-xs);
}

.bar {
  width: 24px;
  height: 3px;
  background: var(--text-primary);
  margin: 2px 0;
  transition: var(--transition-fast);
  border-radius: 2px;
}

/* === SECCIONES BASE === */
section {
  padding: var(--section-gap) 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* === HERO SECTION === */
.hero-section {
  background: linear-gradient(
    135deg,
    var(--bg-primary) 0%,
    var(--bg-secondary) 50%,
    var(--bg-primary) 100%
  );
  position: relative;
  overflow: hidden;
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
  min-height: 100vh;
  padding-top: 70px;
}

.hero-content {
  z-index: 2;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--space-lg);
}

.greeting {
  color: var(--primary);
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.name {
  color: var(--text-primary);
}

.role {
  color: var(--text-secondary);
  font-size: 2rem;
  font-weight: 600;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* === BOTONES OPTIMIZADOS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  font-size: 1rem;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--bg-card);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
}

/* === ABOUT SECTION OPTIMIZADA === */
.about-section {
  background: var(--bg-secondary);
}

.about-content {
  display: grid;
  gap: var(--space-2xl);
}

.about-text {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.about-card {
  background: var(--bg-card);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.about-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}

.about-card h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.about-card p {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* About Card Links */
.card-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.card-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  text-decoration: none !important;
  color: var(--text-muted) !important;
  transition: all var(--transition-fast);
  font-size: 0.9rem;
  border: 1px solid transparent;
}

.card-link:hover {
  background: rgba(59, 130, 246, 0.1);
  color: var(--primary) !important;
  border-color: rgba(59, 130, 246, 0.3);
  transform: translateX(5px);
}

.card-link i {
  font-size: 1rem;
  width: 16px;
  text-align: center;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.stat-card {
  background: var(--bg-card);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: var(--space-sm);
}

.stat-label {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.stat-description {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* === PROJECTS SECTION === */
.projects-section {
  background: var(--bg-primary);
}

.projects-filter {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--space-sm) var(--space-lg);
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-xl);
}

.project-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
  position: relative;
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}

.project-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.project-card:hover .project-image img {
  transform: scale(1.1);
}

/* Estilo específico para la imagen de MovieFlix */
.movieflix-image {
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.movieflix-image img {
  object-fit: contain !important;
  object-position: center;
  padding: 20px;
  max-width: 90%;
  max-height: 90%;
  width: auto !important;
  height: auto !important;
}

.project-card:hover .movieflix-image img {
  transform: scale(1.05);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-links {
  display: flex;
  gap: var(--space-md);
}

.project-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.project-link:hover {
  background: var(--primary-light);
  transform: scale(1.1);
}

.project-content {
  padding: var(--space-xl);
}

.project-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.tech-tag {
  background: rgba(59, 130, 246, 0.1);
  color: var(--primary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
}

/* === CONTACT SECTION === */
.contact-section {
  background: var(--bg-secondary);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}

.contact-form {
  background: var(--bg-card);
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
  font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--space-md);
  background: var(--bg-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

/* Contact Info Styles */
.contact-info {
  display: grid;
  gap: var(--space-lg);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.contact-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(59, 130, 246, 0.3);
}

.contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary), #1e40af);
  border-radius: 50%;
  color: white;
  font-size: 1.2rem;
}

.contact-details {
  flex: 1;
}

.contact-details h3 {
  margin: 0 0 var(--space-xs) 0;
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 600;
}

.contact-link {
  text-decoration: none !important;
  color: var(--text-muted) !important;
  transition: color var(--transition-fast);
  display: block;
}

.contact-link:hover {
  color: var(--primary) !important;
}

.contact-text {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

/* === FOOTER === */
.footer {
  background: var(--bg-primary);
  padding: var(--space-2xl) 0 var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-2xl);
  margin-bottom: var(--space-xl);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
}

/* === FLOATING BUTTONS === */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--transition-normal);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(100px);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-5px);
}

.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  left: 2rem;
  width: 60px;
  height: 60px;
  background: #25d366;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1.5rem;
  z-index: 1000;
  transition: all var(--transition-normal);
  animation: whatsapp-pulse 2s infinite;
}

.whatsapp-float:hover {
  background: #20ba5a;
  transform: scale(1.1);
}

@keyframes whatsapp-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}

/* === ANIMACIONES OPTIMIZADAS === */
.animate-fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.animate-fade-in.animated {
  opacity: 1;
  transform: translateY(0);
}

.animate-scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition: all 0.5s ease-out;
}

.animate-scale-in.animated {
  opacity: 1;
  transform: scale(1);
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-xl);
  }

  .contact-content {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .section-title {
    font-size: 2rem;
  }
}

/* Breakpoint intermedio para activar hamburguesa antes */
@media (max-width: 992px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--bg-primary);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--space-xl);
    transition: left var(--transition-normal);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-toggle {
    display: flex;
  }

  .language-switcher {
    margin: var(--space-md) 0;
    justify-content: center;
    padding: var(--space-sm);
  }

  .nav-toggle.active .bar:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
  }

  .nav-toggle.active .bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active .bar:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: 1rem;
    --section-gap: 3rem;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-buttons {
    justify-content: center;
  }

  .about-text {
    grid-template-columns: 1fr;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .about-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .lang-btn {
    width: 40px;
    height: 30px;
  }

  .projects-filter {
    flex-direction: column;
    align-items: center;
  }

  .back-to-top,
  .whatsapp-float {
    width: 45px;
    height: 45px;
    bottom: 1rem;
  }

  .whatsapp-float {
    left: 1rem;
  }

  .back-to-top {
    right: 1rem;
  }
}

@media (max-width: 480px) {
  :root {
    --container-padding: 0.75rem;
  }

  body {
    overflow-x: hidden;
    position: relative;
  }

  .navbar {
    width: 100vw;
    left: 0;
    right: 0;
  }

  .nav-container {
    padding: 0 1rem;
    min-width: 0;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }

  .btn {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.9rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .project-card {
    margin: 0 -1rem;
  }

  .back-to-top {
    right: 1rem;
    bottom: 1rem;
    width: 45px;
    height: 45px;
    z-index: 9999;
  }

  .whatsapp-float {
    left: 1rem;
    bottom: 1rem;
    width: 50px;
    height: 50px;
  }
}

/* === PERFORMANCE OPTIMIZATIONS === */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Optimización para impresión */
@media print {
  .navbar,
  .back-to-top,
  .whatsapp-float,
  .loading-screen {
    display: none !important;
  }
}

/* === UTILITIES ADICIONALES === */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

.w-full {
  width: 100%;
}
.h-full {
  height: 100%;
}

.mb-0 {
  margin-bottom: 0;
}
.mb-sm {
  margin-bottom: var(--space-sm);
}
.mb-md {
  margin-bottom: var(--space-md);
}
.mb-lg {
  margin-bottom: var(--space-lg);
}
.mb-xl {
  margin-bottom: var(--space-xl);
}

.opacity-0 {
  opacity: 0;
}
.opacity-50 {
  opacity: 0.5;
}
.opacity-100 {
  opacity: 1;
}

/* === SCROLL INDICATOR === */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--text-muted);
  cursor: pointer;
}

.scroll-arrow {
  font-size: 1.5rem;
  animation: bounce 2s infinite;
  margin-bottom: var(--space-sm);
}

.scroll-text {
  font-size: 0.9rem;
  display: block;
}

@keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/* === DOCUMENTACIÓN STYLES MEJORADOS === */
.doc-bg {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  border-radius: var(--radius-xl);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  padding: 3rem 2.5rem;
  margin-bottom: 3rem;
  border: 1px solid rgba(59, 130, 246, 0.1);
  position: relative;
  overflow: hidden;
}

.doc-bg::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #3b82f6, #1e40af, #6366f1);
}

.doc-markdown {
  color: #1e293b;
  line-height: 1.7;
}

.doc-markdown h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: #0f172a !important;
  margin-bottom: 1rem;
  text-align: center;
  background: linear-gradient(135deg, #3b82f6, #1e40af);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.doc-markdown h2 {
  font-size: 2rem;
  font-weight: 600;
  color: #1e293b !important;
  margin: 2.5rem 0 1.5rem 0;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #e2e8f0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.doc-markdown h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: #374151 !important;
  margin: 2rem 0 1rem 0;
}

.doc-markdown h4 {
  font-size: 1.25rem;
  font-weight: 500;
  color: #4b5563 !important;
  margin: 1.5rem 0 0.75rem 0;
}

.doc-markdown p {
  margin-bottom: 1.25rem;
  font-size: 1.1rem;
  color: #374151 !important;
  text-indent: 0;
}

.doc-markdown ul,
.doc-markdown ol {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
}

.doc-markdown li {
  margin-bottom: 0.5rem;
  color: #4b5563 !important;
  font-size: 1rem;
}

.doc-markdown strong {
  color: #1e293b !important;
  font-weight: 600;
}

.doc-markdown code {
  background: #f1f5f9;
  color: #e11d48 !important;
  padding: 0.25rem 0.5rem;
  border-radius: 0.375rem;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.9rem;
}

.doc-markdown pre {
  background: #0f172a;
  color: #f8fafc !important;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid #334155;
  position: relative;
}

.doc-markdown pre code {
  background: transparent;
  color: #f8fafc !important;
  padding: 0;
  font-family: "JetBrains Mono", monospace;
  line-height: 1.6;
}

/* Comparación Antes/Después */
.comparison-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 2rem 0;
}

.comparison-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  border: 1px solid #e2e8f0;
}

.comparison-card.before {
  border-left: 4px solid #ef4444;
}

.comparison-card.after {
  border-left: 4px solid #10b981;
}

.comparison-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.comparison-title.before {
  color: #dc2626;
}

.comparison-title.after {
  color: #059669;
}

.metric-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid #f1f5f9;
}

.metric-item:last-child {
  border-bottom: none;
}

.metric-label {
  font-weight: 500;
  color: #374151;
}

.metric-value {
  font-weight: 600;
  font-family: "JetBrains Mono", monospace;
}

.metric-value.bad {
  color: #dc2626;
}

.metric-value.good {
  color: #059669;
}

.metric-value.warning {
  color: #d97706;
}

/* Progress Bars */
.progress-container {
  margin: 1rem 0;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: #e5e7eb;
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 2s ease-in-out;
}

.progress-fill.bad {
  background: linear-gradient(90deg, #ef4444, #dc2626);
}

.progress-fill.warning {
  background: linear-gradient(90deg, #f59e0b, #d97706);
}

.progress-fill.good {
  background: linear-gradient(90deg, #10b981, #059669);
}

/* Schema.org Visual */
.schema-benefits {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.benefit-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  border: 1px solid #e2e8f0;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.benefit-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #3b82f6, #1e40af);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: white;
  font-size: 1.5rem;
}

.benefit-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 0.5rem;
}

.benefit-description {
  font-size: 0.9rem;
  color: #6b7280;
  line-height: 1.5;
}

/* Responsive */
@media (max-width: 768px) {
  .comparison-container {
    grid-template-columns: 1fr;
  }

  .doc-bg {
    padding: 2rem 1.5rem;
  }

  .doc-markdown h1 {
    font-size: 2rem;
  }

  .doc-markdown h2 {
    font-size: 1.5rem;
  }
}

/* === MEDIA LINKS === */
.media-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.media-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm);
  background: rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-md);
  color: var(--primary);
  text-decoration: none;
  transition: all var(--transition-fast);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.media-link:hover {
  background: rgba(59, 130, 246, 0.2);
  transform: translateX(5px);
}

/* === FLOATING ICONS === */
.floating-icons {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.tech-icon {
  position: absolute;
  width: 60px;
  height: 60px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.5rem;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

.tech-icon:nth-child(1) {
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}
.tech-icon:nth-child(2) {
  top: 60%;
  left: 15%;
  animation-delay: 2s;
}
.tech-icon:nth-child(3) {
  top: 30%;
  right: 20%;
  animation-delay: 4s;
}
.tech-icon:nth-child(4) {
  top: 70%;
  right: 15%;
  animation-delay: 1s;
}
.tech-icon:nth-child(5) {
  top: 45%;
  left: 5%;
  animation-delay: 3s;
}

/* === PROFILE CARD === */
.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.profile-card {
  position: relative;
  z-index: 2;
}

.profile-image {
  position: relative;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--primary);
  box-shadow: var(--shadow-xl);
}

.profile-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.status-indicator {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.status-dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(16, 185, 129, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

.status-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
}

/* === TIMELINE === */
.timeline {
  position: relative;
  padding: var(--space-xl) 0;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--primary);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-2xl);
  display: flex;
  align-items: center;
}

.timeline-item:nth-child(odd) .timeline-content {
  margin-right: calc(50% + 2rem);
  text-align: right;
}

.timeline-item:nth-child(even) .timeline-content {
  margin-left: calc(50% + 2rem);
}

.timeline-marker {
  position: absolute;
  left: 50%;
  width: 20px;
  height: 20px;
  background: var(--primary);
  border-radius: 50%;
  transform: translateX(-50%);
  z-index: 2;
  border: 4px solid var(--bg-primary);
}

.timeline-content {
  background: var(--bg-card);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  max-width: 450px;
}

.timeline-content h3 {
  color: var(--primary);
  margin-bottom: var(--space-sm);
  font-size: 1.25rem;
}

.timeline-content h4 {
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  font-size: 1.1rem;
}

.timeline-content p {
  color: var(--text-secondary);
  line-height: 1.6;
}