/* importación de Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Geist:wght@300;400;500;600;700&family=Geist+Mono:wght@400;500;600&display=swap');

:root {
  /* Handoff design tokens */
  --bg:          #F4F1EA;   /* paper · principal */
  --bg-2:        #EDEAE1;   /* paper más profundo (mapa, contraste) */
  --surface:     #FFFFFF;   /* cards */
  --surface-2:   #E8E4D9;   /* chips, surface secundaria */
  --surface-3:   #DCD7C8;   /* hover / divisores fuertes */
  --line:        rgba(28, 26, 22, 0.08);
  --line-strong: rgba(28, 26, 22, 0.18);

  --ink:         #1C1A16;   /* near-black cálido */
  --ink-2:       rgba(28, 26, 22, 0.72);
  --ink-3:       rgba(28, 26, 22, 0.48);
  --ink-4:       rgba(28, 26, 22, 0.28);

  --acid:        #4A7C1E;   /* verde editorial (alto contraste sobre paper) */
  --acid-bright: #B8E835;   /* lima vivo para fills y highlights */
  --acid-soft:   rgba(74, 124, 30, 0.10);
  --amber:       #C2740C;
  --amber-soft:  rgba(194, 116, 12, 0.10);
  --coral:       #C73826;
  --coral-soft:  rgba(199, 56, 38, 0.10);

  --serif: "Instrument Serif", "Times New Roman", serif;
  --sans:  "Geist", -apple-system, BlinkMacSystemFont, "Inter", sans-serif;
  --mono:  "Geist Mono", "JetBrains Mono", ui-monospace, monospace;

  /* Retrocompatibilidad con nombres anteriores */
  --bg-primary: var(--bg);
  --bg-secondary: var(--surface);
  --bg-tertiary: var(--bg-2);
  
  --text-primary: var(--ink);
  --text-secondary: var(--ink-2);
  --text-muted: var(--ink-3);
  
  --primary: var(--acid);
  --primary-hover: #3b6318;
  --primary-light: var(--acid-soft);
  --primary-glow: rgba(74, 124, 30, 0.15);
  
  --secondary: var(--acid-bright);
  --secondary-hover: #a2cf2a;
  --secondary-light: rgba(184, 232, 83, 0.1);
  
  --accent: var(--ink);
  --accent-light: var(--surface-2);
  
  --brand-gradient: linear-gradient(135deg, var(--acid) 0%, var(--acid-bright) 100%);
  --brand-gradient-hover: linear-gradient(135deg, #3b6318 0%, #a2cf2a 100%);
  --text-gradient: linear-gradient(135deg, var(--ink) 20%, var(--acid) 100%);
  
  --success: var(--acid);
  --warning: var(--amber);
  --danger: var(--coral);
  
  --border-color: var(--line);
  --border-hover: var(--line-strong);
  
  /* Glassmorphism Tokens */
  --glass-bg: rgba(255, 255, 255, 0.65);
  --glass-border: var(--line);
  --glass-shadow: 0 4px 12px rgba(28, 26, 22, 0.04);
  
  /* Sombras y Efectos */
  --shadow-sm: 0 2px 4px 0 rgba(28, 26, 22, 0.02);
  --shadow-md: 0 4px 12px 0 rgba(28, 26, 22, 0.06);
  --shadow-lg: 0 8px 24px -6px rgba(28, 26, 22, 0.08);
  --shadow-xl: 0 16px 36px -10px rgba(28, 26, 22, 0.12);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Fuentes */
  --font-heading: var(--serif);
  --font-body: var(--sans);

  /* Transiciones */
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  
  --max-width: 1200px;
}

/* Reset de CSS */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "cv11";
  font-variant-numeric: tabular-nums;
  position: relative;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

ul {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  border: none;
  outline: none;
}

/* Tipografía */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
}

h1 {
  font-size: clamp(2.25rem, 4vw, 3.5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  letter-spacing: -0.01em;
  margin-bottom: 1.5rem;
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  margin-bottom: 1rem;
}

p {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

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

/* Estructura del Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-grey {
  background-color: var(--bg-tertiary);
}

/* Cabecera / Navegación */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgb(255 255 255 / 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
}

.logo span {
  color: var(--primary);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  font-weight: 500;
  color: var(--text-secondary);
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

.nav-btn {
  background-color: var(--primary);
  color: white;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.875rem;
}

.nav-btn:hover {
  background-color: var(--primary-hover);
  box-shadow: var(--shadow-md);
}

/* Pie de Página / Footer */
.footer {
  background-color: var(--accent);
  color: white;
  padding: 4rem 0 2rem 0;
  font-size: 0.875rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.footer-col h4 {
  color: white;
  margin-bottom: 1.5rem;
  font-size: 1rem;
  font-weight: 600;
}

.footer-about p {
  color: #94a3b8;
  margin-top: 1rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: #94a3b8;
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid #334155;
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #64748b;
}

@media (max-width: 640px) {
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

/* ----------------------------------------------------------------------
   ANIMACIONES Y ELEMENTOS CREATIVOS
   ---------------------------------------------------------------------- */

@keyframes float-orb {
  0% {
    transform: translate(0px, 0px) scale(1);
  }
  33% {
    transform: translate(40px, -60px) scale(1.15);
  }
  66% {
    transform: translate(-30px, 30px) scale(0.9);
  }
  100% {
    transform: translate(0px, 0px) scale(1);
  }
}

.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(130px);
  z-index: -10;
  opacity: 0.12;
  pointer-events: none;
}

.orb-primary {
  width: 500px;
  height: 500px;
  background: var(--brand-gradient);
  animation: float-orb 22s infinite ease-in-out;
}

.orb-secondary {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--secondary) 0%, transparent 80%);
  animation: float-orb 28s infinite ease-in-out reverse;
}

/* Indicador de Pulso IA Global */
.pulse-indicator {
  width: 8px;
  height: 8px;
  background-color: var(--success);
  border-radius: 50%;
  display: inline-block;
  position: relative;
}

.pulse-indicator::after {
  content: '';
  width: 100%;
  height: 100%;
  background-color: var(--success);
  border-radius: 50%;
  position: absolute;
  top: 0;
  left: 0;
  animation: pulse-ring 1.8s infinite ease-in-out;
}

@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(2.8); opacity: 0; }
}

/* Typography and utility classes from handoff */
.serif {
  font-family: var(--serif) !important;
  font-style: italic;
  letter-spacing: -0.02em;
}
.mono {
  font-family: var(--mono) !important;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.tnum {
  font-variant-numeric: tabular-nums;
}
.lg-row {
  display: flex;
  align-items: center;
}
.lg-col {
  display: flex;
  flex-direction: column;
}
.hairline {
  height: 1px;
  background-color: var(--line);
  border: none;
}
.grid-bg {
  background-image: radial-gradient(circle, rgba(28, 26, 22, 0.07) 1px, transparent 1px);
  background-size: 14px 14px;
}
.label {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  display: block;
}