/* ============================================
   KONECTAI.DEV - Estilos Globales
   Manual de Identidad Visual v1.0
   ============================================ */

/* ========== VARIABLES DE COLOR ========== */
:root {
  /* Paleta Primaria */
  --primary-black: #000000;
  --primary-orange: #FF9900;
  --primary-white: #FFFFFF;
  
  /* Paleta Secundaria - Silver Mountain */
  --bg-ui: #E5E5E5;
  --gray-medium: #808080;
  --gray-light: #CCCCCC;
  --gray-dark: #404040;
  
  /* Sombras y efectos */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
  
  /* Espaciado */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  
  /* Tipografía */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Roboto', sans-serif;
  --font-code: 'Fira Code', monospace;
  
  /* Tamaños de fuente */
  --text-xs: 0.875rem;
  --text-sm: 1rem;
  --text-md: 1.125rem;
  --text-lg: 1.5rem;
  --text-xl: 2rem;
  --text-2xl: 2.5rem;
  --text-3xl: 3rem;
  
  /* Transiciones */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Contenedor máximo */
  --max-width: 1200px;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--primary-black);
  background-color: var(--primary-white);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ========== TIPOGRAFÍA ========== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: var(--text-3xl);
}

h2 {
  font-size: var(--text-2xl);
}

h3 {
  font-size: var(--text-xl);
}

h4 {
  font-size: var(--text-lg);
}

h5, h6 {
  font-size: var(--text-md);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--gray-dark);
}

a {
  color: var(--primary-orange);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

a:hover {
  opacity: 0.8;
}

code {
  font-family: var(--font-code);
  background-color: var(--bg-ui);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
}

/* ========== UTILIDADES ========== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

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

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

.bg-light {
  background-color: var(--bg-ui);
}

/* ========== BOTONES ========== */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-sm);
  text-align: center;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: #E68A00;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  opacity: 1;
}

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

.btn-secondary:hover {
  background-color: var(--primary-black);
  color: var(--primary-white);
  transform: translateY(-2px);
  opacity: 1;
}

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

.btn-outline:hover {
  background-color: var(--primary-orange);
  color: var(--primary-white);
  transform: translateY(-2px);
  opacity: 1;
}

/* ========== CARDS ========== */
.card {
  background-color: var(--primary-white);
  border-radius: 8px;
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

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

.card-title {
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-sm);
}

.card-description {
  color: var(--gray-dark);
  margin-bottom: var(--spacing-md);
}

/* ========== SECCIONES ========== */
.section {
  padding: var(--spacing-xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-subtitle {
  text-align: center;
  color: var(--gray-medium);
  max-width: 700px;
  margin: 0 auto var(--spacing-lg);
}

/* ========== GRID ========== */
.grid {
  display: grid;
  gap: var(--spacing-md);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ========== EFECTOS DE MONTAÑA ========== */
.mountain-bg {
  position: relative;
  overflow: hidden;
}

.mountain-bg::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(to top, var(--bg-ui) 0%, transparent 100%);
  pointer-events: none;
  z-index: 1;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  :root {
    --text-3xl: 2rem;
    --text-2xl: 1.75rem;
    --text-xl: 1.5rem;
    --spacing-xl: 2.5rem;
    --spacing-lg: 2rem;
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .btn {
    width: 100%;
    padding: 1rem;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  :root {
    --text-3xl: 1.75rem;
    --text-2xl: 1.5rem;
    --spacing-md: 1.5rem;
  }
}

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn var(--transition-slow) ease-out;
}

.fade-in-up {
  animation: fadeInUp var(--transition-slow) ease-out;
}

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

/* Focus visible para navegación por teclado */
:focus-visible {
  outline: 3px solid var(--primary-orange);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
  outline: 3px solid var(--primary-orange);
  outline-offset: 2px;
}