/**
 * MARCAS MILLONARIAS - DESIGN SYSTEM v2.0
 * "Gradient Future" Theme
 * 
 * Aplicar: Agregar <link rel="stylesheet" href="/css/design-system.css"> 
 * antes de los estilos específicos de cada página
 */

/* ============================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */

:root {
  /* === COLORS === */
  
  /* Base (Dark Mode First) */
  --color-bg-primary: #0A0A0A;
  --color-bg-secondary: #111111;
  --color-bg-tertiary: #1C1C1E;
  --color-bg-card: rgba(28, 28, 30, 0.6);
  --color-bg-card-hover: rgba(38, 38, 42, 0.8);
  
  /* Text */
  --color-text-primary: #FAFAFA;
  --color-text-secondary: #A1A1AA;
  --color-text-muted: #71717A;
  --color-text-inverse: #09090B;
  
  /* Accent Gradients */
  --gradient-primary: linear-gradient(135deg, #A855F7 0%, #6366F1 50%, #06B6D4 100%);
  --gradient-secondary: linear-gradient(135deg, #EC4899 0%, #A855F7 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(168, 85, 247, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
  --gradient-border: linear-gradient(135deg, rgba(168, 85, 247, 0.5) 0%, rgba(6, 182, 212, 0.5) 100%);
  
  /* Solid Accents (for text/icons) */
  --color-accent-purple: #A855F7;
  --color-accent-blue: #6366F1;
  --color-accent-cyan: #06B6D4;
  --color-accent-pink: #EC4899;
  
  /* Semantic */
  --color-success: #22C55E;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  --color-info: #3B82F6;
  
  /* === TYPOGRAPHY === */
  
  /* Font Families */
  --font-display: 'Clash Display', 'Inter', system-ui, sans-serif;
  --font-body: 'Satoshi', 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Font Sizes (fluid) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.75rem + 2.5vw, 3.5rem);
  --text-5xl: clamp(3rem, 2rem + 5vw, 5rem);
  
  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  
  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  
  /* Letter Spacing */
  --tracking-tighter: -0.05em;
  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;
  
  /* === SPACING === */
  --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;
  --space-24: 6rem;
  --space-32: 8rem;
  
  /* === BORDERS & RADIUS === */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  --border-width: 1px;
  --border-color: rgba(255, 255, 255, 0.1);
  --border-color-hover: rgba(255, 255, 255, 0.2);
  
  /* === SHADOWS === */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -2px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(168, 85, 247, 0.3), 0 0 40px rgba(168, 85, 247, 0.1);
  --shadow-glow-cyan: 0 0 20px rgba(6, 182, 212, 0.3), 0 0 40px rgba(6, 182, 212, 0.1);
  
  /* === TRANSITIONS === */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  --transition-slower: 500ms ease;
  
  /* === Z-INDEX === */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
}


/* ============================================
   2. BASE STYLES (Reset + Defaults)
   ============================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
}

/* Grain Texture Overlay */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  opacity: 0.03;
  pointer-events: none;
  z-index: 9999;
}


/* ============================================
   3. TYPOGRAPHY COMPONENTS
   ============================================ */

/* Headings */
h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  font-family: var(--font-display);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

h1, .h1 { font-size: var(--text-5xl); }
h2, .h2 { font-size: var(--text-4xl); }
h3, .h3 { font-size: var(--text-3xl); }
h4, .h4 { font-size: var(--text-2xl); }
h5, .h5 { font-size: var(--text-xl); }
h6, .h6 { font-size: var(--text-lg); }

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

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

/* Body Text */
p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

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

/* Links */
a {
  color: var(--color-accent-purple);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-cyan);
}


/* ============================================
   4. BUTTON COMPONENTS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  line-height: var(--leading-none);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

/* Primary Button - Gradient with Glow */
.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-glow);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(168, 85, 247, 0.5), 0 0 60px rgba(168, 85, 247, 0.2);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-primary:active {
  transform: translateY(0);
}

/* Secondary Button - Glass Effect */
.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-primary);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-color-hover);
  transform: translateY(-2px);
}

/* Ghost Button */
.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border: none;
}

.btn-ghost:hover {
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* Button Sizes */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn-xl {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-lg);
}


/* ============================================
   5. CARD COMPONENTS
   ============================================ */

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
}

.card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--border-color-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* Card with Gradient Border */
.card-gradient {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  backdrop-filter: blur(10px);
  position: relative;
  border: none;
}

.card-gradient::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-xl);
  padding: 1px;
  background: var(--gradient-border);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.5;
  transition: opacity var(--transition-base);
}

.card-gradient:hover::before {
  opacity: 1;
}

/* Feature Card */
.card-feature {
  text-align: center;
}

.card-feature .icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-subtle);
  border-radius: var(--radius-lg);
  font-size: var(--text-2xl);
}


/* ============================================
   6. SECTION & LAYOUT
   ============================================ */

.section {
  padding: var(--space-24) var(--space-4);
}

.section-sm {
  padding: var(--space-16) var(--space-4);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.container-sm {
  max-width: 800px;
}

.container-lg {
  max-width: 1400px;
}

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

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

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 768px) and (max-width: 1024px) {
  .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}


/* ============================================
   7. BADGE COMPONENTS
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text-secondary);
  border: 1px solid var(--border-color);
}

.badge-gradient {
  background: var(--gradient-subtle);
  border-color: rgba(168, 85, 247, 0.3);
  color: var(--color-accent-purple);
}

.badge-success {
  background: rgba(34, 197, 94, 0.1);
  border-color: rgba(34, 197, 94, 0.3);
  color: var(--color-success);
}

/* Pulsing dot */
.badge-live::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--color-success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}


/* ============================================
   8. FORM COMPONENTS
   ============================================ */

.form-group {
  margin-bottom: var(--space-4);
}

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

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent-purple);
  box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.1);
}

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


/* ============================================
   9. ANIMATIONS & EFFECTS
   ============================================ */

/* Fade In Up (for scroll reveals) */
.animate-fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slower), transform var(--transition-slower);
}

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

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0ms; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 100ms; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 100ms; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 200ms; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 250ms; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 300ms; }

.stagger-children.visible > * {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--transition-slower), transform var(--transition-slower);
}

/* Gradient Mesh Background */
.bg-gradient-mesh {
  background: 
    radial-gradient(ellipse at 20% 0%, rgba(168, 85, 247, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 0%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
    var(--color-bg-primary);
}

/* Animated Gradient Background */
.bg-animated-gradient {
  background: linear-gradient(-45deg, #0A0A0A, #1a1a2e, #16213e, #0f3460, #0A0A0A);
  background-size: 400% 400%;
  animation: gradient-shift 15s ease infinite;
}

@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Glow effect on hover */
.glow-on-hover {
  transition: box-shadow var(--transition-base);
}

.glow-on-hover:hover {
  box-shadow: var(--shadow-glow);
}

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

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

/* Shimmer effect */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.shimmer {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.05) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}


/* ============================================
   10. HERO COMPONENTS
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 10;
}

/* Gradient Orbs (upgraded) */
.hero-orbs {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero-orbs::before,
.hero-orbs::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
}

.hero-orbs::before {
  width: 600px;
  height: 600px;
  background: var(--color-accent-purple);
  top: -200px;
  left: -100px;
  animation: float 20s ease-in-out infinite;
}

.hero-orbs::after {
  width: 500px;
  height: 500px;
  background: var(--color-accent-cyan);
  bottom: -200px;
  right: -100px;
  animation: float 25s ease-in-out infinite reverse;
}


/* ============================================
   11. UTILITY CLASSES
   ============================================ */

/* Text Alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Flexbox */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* Spacing */
.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); }
.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); }
.mx-auto { margin-left: auto; margin-right: auto; }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-8 { padding-top: var(--space-8); padding-bottom: var(--space-8); }

/* Max Width */
.max-w-prose { max-width: 65ch; }
.max-w-xl { max-width: 36rem; }
.max-w-2xl { max-width: 42rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }

/* Width */
.w-full { width: 100%; }

/* Visibility */
.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;
}

/* Hide on mobile / desktop */
@media (max-width: 768px) {
  .hide-mobile { display: none !important; }
}

@media (min-width: 769px) {
  .hide-desktop { display: none !important; }
}