/* Variables CSS para temas - Mejoradas */
:root {
  /* Colores modo claro - Paleta más profesional */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-tertiary: #94a3b8;
  --accent-color: #3b82f6;
  --accent-hover: #2563eb;
  --accent-light: #dbeafe;
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Tipografía mejorada */
  --font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: "Inter", sans-serif;
  --font-size-base: 16px;
  --line-height: 1.7;
  --letter-spacing: -0.02em;

  /* Espaciado sistemático */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --spacing-2xl: 6rem;

  /* Bordes */
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --border-radius-lg: 16px;

  /* Transiciones */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);

  /* Gradientes */
  --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  --gradient-secondary: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  --gradient-hero: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #60a5fa 100%);
}

/* Tema oscuro mejorado */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-tertiary: #94a3b8;
  --accent-color: #60a5fa;
  --accent-hover: #3b82f6;
  --accent-light: #1e3a8a;
  --border-color: #334155;
  --border-light: #1e293b;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
}

/* Reset y estilos base mejorados */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth !important;
  font-size: var(--font-size-base);
}

body {
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: var(--line-height);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: var(--transition);
  letter-spacing: var(--letter-spacing);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  max-height: 100vh;
}

/* Container mejorado */
.main-content {
  max-height: 100vh;
  z-index: 1;
  position: static;
  overflow-y: scroll;
}

.main-content > section {
  position: relative;
  width: 100%;
  display: block;
}

section {
  position: static !important;
}

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

.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Utilidades base */
.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;
}