/* ========================================
   VARIABLES GLOBALES Y RESET
======================================== */

:root {
  /* Colores principales */
  --primary-dark: #1e293b;
  --primary-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --light-gray: #f8fafc;
  --medium-gray: #64748b;
  --dark-gray: #334155;
  --white: #ffffff;
  --black: #0f172a;
  
  /* Colores extendidos */
  --primary-blue-light: #60a5fa;
  --primary-blue-dark: #1d4ed8;
  --accent-cyan-light: #22d3ee;
  --gradient-primary: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-cyan) 100%);
  --gradient-subtle: linear-gradient(135deg, var(--light-gray) 0%, #e2e8f0 100%);
  --gradient-hero: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 50%, var(--accent-cyan) 100%);
  
  /* Colores de estado */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #8b5cf6;
  
  /* Tipografía */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Escalas tipográficas fluidas */
  --text-xs: clamp(0.7rem, 0.8vw, 0.75rem);
  --text-sm: clamp(0.8rem, 1vw, 0.875rem);
  --text-base: clamp(0.9rem, 1.2vw, 1rem);
  --text-lg: clamp(1rem, 1.5vw, 1.125rem);
  --text-xl: clamp(1.1rem, 2vw, 1.25rem);
  --text-2xl: clamp(1.3rem, 2.5vw, 1.5rem);
  --text-3xl: clamp(1.6rem, 3vw, 1.875rem);
  --text-4xl: clamp(2rem, 4vw, 2.25rem);
  --text-5xl: clamp(2.2rem, 5vw, 3rem);
  
  /* Espaciado */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  
  /* Sombras mejoradas */
  --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  
  /* Sombras con color */
  --shadow-blue: 0 10px 25px -5px rgb(59 130 246 / 0.3);
  --shadow-cyan: 0 10px 25px -5px rgb(6 182 212 / 0.3);
  --shadow-success: 0 10px 25px -5px rgb(16 185 129 / 0.3);
  
  /* Bordes y radios */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  /* Transiciones */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset y normalize */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--dark-gray);
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ========================================
   TIPOGRAFÍA
======================================== */

.font-serif {
  font-family: var(--font-serif);
}

.font-mono {
  font-family: var(--font-mono);
}

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

/* Jerarquía tipográfica */
.h1 {
  font-size: var(--text-5xl);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.h2 {
  font-size: var(--text-4xl);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.h3 {
  font-size: var(--text-3xl);
  font-weight: 600;
  line-height: 1.3;
}

.h4 {
  font-size: var(--text-2xl);
  font-weight: 600;
  line-height: 1.4;
}

.h5 {
  font-size: var(--text-xl);
  font-weight: 500;
  line-height: 1.4;
}

.h6 {
  font-size: var(--text-lg);
  font-weight: 500;
  line-height: 1.5;
}

.lead {
  font-size: var(--text-xl);
  font-weight: 300;
  line-height: 1.7;
  color: var(--medium-gray);
}

/* Títulos especiales */
.title-elegant {
  font-family: var(--font-serif);
  font-weight: 400;
  letter-spacing: -0.02em;
}

.title-hero {
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1.1;
  font-weight: 900;
  background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ========================================
   LAYOUT Y CONTENEDORES
======================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.section {
  padding: clamp(3rem, 8vw, 5rem) 0;
}

.section-gray {
  background: var(--gradient-subtle);
}

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

/* Separadores elegantes */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--medium-gray), transparent);
  margin: var(--space-8) 0;
  opacity: 0.3;
}

/* Grid system */
.grid {
  display: grid;
  gap: var(--space-6);
}

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

.grid-auto-fit {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* Flexbox utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

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

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

.justify-between {
  justify-content: space-between;
}

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

/* ========================================
   BOTONES
======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  min-height: 48px;
  font-weight: 500;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: 1;
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-blue);
}

.btn-primary:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-2px) scale(1.02);
}

.btn-secondary {
  background: var(--white);
  color: var(--primary-blue);
  border: 2px solid var(--primary-blue);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--primary-blue);
  color: var(--white);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  background: var(--primary-blue);
  color: var(--white);
  transform: translateY(-1px);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  min-height: 56px;
  font-size: var(--text-lg);
}

.btn-block {
  width: 100%;
}

/* Efecto shimmer para botones */
.btn-shimmer::before {
  content: '';
  position: absolute;
  top: 0;
  left: -200px;
  width: 200px;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.6s ease;
}

.btn-shimmer:hover::before {
  left: 100%;
}

/* ========================================
   CARDS Y COMPONENTES
======================================== */

.card {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--space-8);
  transition: all var(--transition-base);
  border: 1px solid rgb(0 0 0 / 0.05);
  position: relative;
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-6px) scale(1.02);
}

/* Card con glassmorphism */
.card-glass {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

/*.card-header {
  margin-bottom: var(--space-6);
}*/

.card-body {
  margin-bottom: var(--space-6);
}

.card-footer {
  margin-top: auto;
  padding-top: var(--space-6);
  border-top: 1px solid rgb(0 0 0 / 0.1);
}

/* Portfolio cards mejoradas */
.portfolio-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: var(--white);
  box-shadow: var(--shadow-lg);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.portfolio-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.portfolio-card:hover::before {
  transform: scaleX(1);
}

.portfolio-card:hover {
  transform: translateY(-12px);
  box-shadow: var(--shadow-2xl);
}

/* ========================================
   NAVEGACIÓN
======================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  z-index: 1000;
  padding: var(--space-4) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  transition: all var(--transition-base);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.navbar.scrolled {
  box-shadow: var(--shadow-lg);
  background: rgba(255, 255, 255, 0.95);
}

.navbar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--primary-dark);
  text-decoration: none;
}

.navbar-nav {
  display: flex;
  list-style: none;
  gap: var(--space-8);
  margin: 0;
  padding: 0;
}

.navbar-nav a {
  color: var(--dark-gray);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-base);
  position: relative;
}

.navbar-nav a:hover {
  color: var(--primary-blue);
}

.navbar-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-blue);
  transition: width var(--transition-base);
}

.navbar-nav a:hover::after {
  width: 100%;
}

/* Indicador de página activa */
.navbar-nav .nav-link.active {
  color: var(--primary-blue);
  position: relative;
}

.navbar-nav .nav-link.active::before {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  background: var(--primary-blue);
  border-radius: 50%;
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: var(--space-2);
}

.hamburger span {
  width: 24px;
  height: 3px;
  background: var(--primary-dark);
  margin: 2px 0;
  transition: all var(--transition-base);
}

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

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="1"/></pattern></defs><rect width="1000" height="1000" fill="url(%23grid)"/></svg>');
  opacity: 0.5;
  animation: subtle-move 20s ease-in-out infinite;
}

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

/* Animaciones para elementos del hero */
.hero-image {
  animation: float-gentle 6s ease-in-out infinite;
  transform-origin: center center;
}

.hero-image img {
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
}

.hero-image:hover img {
  transform: scale(1.05) translateY(-5px);
  filter: drop-shadow(0 15px 40px rgba(0, 0, 0, 0.4));
}

/* Partículas flotantes sutiles */
.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 0;
}

.hero-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  animation: float-particles 15s linear infinite;
}

.hero-particle:nth-child(1) { left: 10%; animation-delay: 0s; }
.hero-particle:nth-child(2) { left: 20%; animation-delay: 2s; }
.hero-particle:nth-child(3) { left: 30%; animation-delay: 4s; }
.hero-particle:nth-child(4) { left: 40%; animation-delay: 6s; }
.hero-particle:nth-child(5) { left: 50%; animation-delay: 8s; }
.hero-particle:nth-child(6) { left: 60%; animation-delay: 10s; }
.hero-particle:nth-child(7) { left: 70%; animation-delay: 12s; }
.hero-particle:nth-child(8) { left: 80%; animation-delay: 14s; }

/* ========================================
   ANIMACIONES
======================================== */

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

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

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

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

/* Nuevas animaciones sutiles */
@keyframes float-gentle {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  33% {
    transform: translateY(-8px) rotate(0.5deg);
  }
  66% {
    transform: translateY(-4px) rotate(-0.5deg);
  }
}

@keyframes subtle-move {
  0%, 100% {
    transform: translateX(0px);
  }
  50% {
    transform: translateX(10px);
  }
}

@keyframes float-particles {
  0% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.6;
  }
  100% {
    transform: translateY(-100px) rotate(360deg);
    opacity: 0;
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
  }
  50% {
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.5), 0 0 40px rgba(6, 182, 212, 0.3);
  }
}

/* Clases de animación */
.animate-fadeInUp {
  animation: fadeInUp 0.8s ease-out;
}

.animate-fadeInLeft {
  animation: fadeInLeft 0.8s ease-out;
}

.animate-fadeInRight {
  animation: fadeInRight 0.8s ease-out;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

.animate-float {
  animation: float-gentle 6s ease-in-out infinite;
}

.animate-glow {
  animation: glow 3s ease-in-out infinite;
}

/* Hover effects mejorados */
.hover-lift {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
  transform: translateY(-8px) scale(1.02);
}

.hover-glow:hover {
  animation: glow 1.5s ease-in-out infinite;
}

/* ========================================
   UTILIDADES
======================================== */

.text-white { color: var(--white); }
.text-primary { color: var(--primary-blue); }
.text-gray { color: var(--medium-gray); }
.text-dark { color: var(--primary-dark); }

.bg-white { background-color: var(--white); }
.bg-gray { background-color: var(--light-gray); }
.bg-dark { background-color: var(--primary-dark); }

.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }

/* ========================================
   CALL TO ACTION FLOTANTE MEJORADO
======================================== */

.floating-cta {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
  display: none;
}

.floating-cta .btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  padding: 0;
  background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  border: none;
  color: var(--white);
  font-size: 28px;
  
  animation: float-gentle 6s ease-in-out infinite;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  display: flex;
  align-items: center;
  justify-content: center;
}

.floating-cta .btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 25px rgba(37, 211, 102, 0.6);
  animation-play-state: paused;
}

.floating-cta .btn:active {
  transform: scale(0.95);
}

/* Tooltip para el CTA flotante */
.floating-cta .btn::before {
  content: '¡Hablemos!';
  position: absolute;
  right: 70px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--primary-dark);
  color: var(--white);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  pointer-events: none;
  font-family: var(--font-primary);
}

.floating-cta .btn:hover::before {
  opacity: 1;
  visibility: visible;
  transform: translateY(-50%) translateX(-5px);
}

/* Efecto ripple sutil */
.floating-cta .btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.floating-cta .btn:active::after {
  width: 120px;
  height: 120px;
}

/* ========================================
   COMPONENTES ESPECIALES
======================================== */

/* Scroll indicator */
.scroll-indicator {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: var(--gradient-primary);
  z-index: 1001;
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

/* Skeleton loading */
.skeleton {
  background: linear-gradient(90deg, var(--light-gray) 25%, #f1f5f9 50%, var(--light-gray) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
  border-radius: var(--radius-md);
}

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

/* Estados de carga y error */
.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--primary-blue);
  border-top: 2px solid transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.error {
  border-color: var(--error) !important;
  background-color: #fef2f2;
}

.success {
  border-color: var(--success) !important;
  background-color: #f0fdf4;
}