/* ==== VARIABLES.CSS - VARIABLES GLOBALES Y ESTILOS BASE ==== */

/* ==== VARIABLES DE COLOR - PALETA PRINCIPAL ==== */
:root {
  /* Café (color principal) */
  --color-brown: #8B4513;
  --color-brown-dark: #6B3410;
  --color-brown-light: #A0522D;
  --color-brown-lighter: #CD853F;
  
  /* Grises */
  --color-gray-dark: #2C2C2C;
  --color-gray: #5A5A5A;
  --color-gray-light: #8E8E8E;
  --color-gray-lighter: #BFBFBF;
  --color-gray-bg: #F5F5F5;
  
  /* Blancos */
  --color-white: #FFFFFF;
  --color-white-soft: #FAFAFA;
  --color-white-warm: #FFF8F5;
  
  /* Colores de apoyo */
  --color-success: #28a745;
  --color-warning: #ffc107;
  --color-danger: #dc3545;
  --color-info: #17a2b8;
  
  /* ==== ESPACIADO Y DIMENSIONES ==== */
  --spacing-xs: 0.25rem;    /* 4px */
  --spacing-sm: 0.5rem;     /* 8px */
  --spacing-md: 1rem;       /* 16px */
  --spacing-lg: 1.5rem;     /* 24px */
  --spacing-xl: 2rem;       /* 32px */
  --spacing-xxl: 3rem;      /* 48px */
  --spacing-xxxl: 4rem;     /* 64px */
  
  /* ==== TIPOGRAFÍA ==== */
  --font-family-primary: 'Poppins', sans-serif;
  --font-size-xs: 0.75rem;  /* 12px */
  --font-size-sm: 0.875rem; /* 14px */
  --font-size-base: 1rem;   /* 16px */
  --font-size-lg: 1.125rem; /* 18px */
  --font-size-xl: 1.25rem;  /* 20px */
  --font-size-xxl: 1.5rem;  /* 24px */
  --font-size-xxxl: 2rem;   /* 32px */
  
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-loose: 1.8;
  
  /* ==== BORDES Y RADIOS ==== */
  --border-radius-sm: 0.375rem;  /* 6px */
  --border-radius-md: 0.5rem;    /* 8px */
  --border-radius-lg: 0.75rem;   /* 12px */
  --border-radius-xl: 1rem;      /* 16px */
  --border-radius-xxl: 1.5rem;   /* 24px */
  --border-radius-full: 50rem;   /* Circular */
  
  --border-width-thin: 1px;
  --border-width-medium: 2px;
  --border-width-thick: 3px;
  
  /* ==== SOMBRAS ==== */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
  --shadow-xxl: 0 25px 50px rgba(0, 0, 0, 0.15);
  
  /* Sombras específicas del brand */
  --shadow-brown: 0 4px 15px rgba(139, 69, 19, 0.3);
  --shadow-brown-lg: 0 8px 25px rgba(139, 69, 19, 0.4);
  
  /* ==== GRADIENTES ==== */
  --gradient-brown: linear-gradient(135deg, var(--color-brown), var(--color-brown-dark));
  --gradient-gray: linear-gradient(135deg, var(--color-gray-dark), var(--color-gray));
  --gradient-light: linear-gradient(135deg, var(--color-white-soft), var(--color-white));
  
  /* ==== Z-INDEX ==== */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
  
  /* ==== TRANSICIONES ==== */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-bounce: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* ==== BREAKPOINTS (para JS y referencia) ==== */
  --breakpoint-sm: 576px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 992px;
  --breakpoint-xl: 1200px;
  --breakpoint-xxl: 1400px;
}

/* ==== ESTILOS BASE GLOBALES ==== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-gray-dark);
  background-color: var(--color-white);
  margin: 0;
  padding: 0;
  padding-top: 80px; /* Compensar navbar fijo */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==== TIPOGRAFÍA GLOBAL ==== */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-dark);
  line-height: var(--line-height-tight);
  margin: 0 0 var(--spacing-md) 0;
}

h1 { font-size: var(--font-size-xxxl); font-weight: var(--font-weight-extrabold); }
h2 { font-size: 1.75rem; }
h3 { font-size: var(--font-size-xxl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin: 0 0 var(--spacing-md) 0;
  line-height: var(--line-height-normal);
}

a {
  color: var(--color-brown);
  text-decoration: none;
  transition: var(--transition-normal);
}

a:hover {
  color: var(--color-brown-dark);
  text-decoration: underline;
}

/* ==== CLASES UTILITARIAS ==== */

/* Colores */
.text-brown { color: var(--color-brown); }
.text-brown-dark { color: var(--color-brown-dark); }
.text-brown-light { color: var(--color-brown-light); }
.text-gray { color: var(--color-gray); }
.text-gray-light { color: var(--color-gray-light); }
.text-white { color: var(--color-white); }

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

/* Texto destacado */
.accent { color: var(--color-brown); }
.accent-strong { 
  color: var(--color-brown);
  font-weight: var(--font-weight-extrabold);
}
.accent-text { color: var(--color-brown); }

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

/* Títulos de sección */
.section-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-lg);
  position: relative;
  color: var(--color-gray-dark);
  text-align: center;
}

.section-title::after {
  content: '';
  width: 80px;
  height: 4px;
  background: var(--gradient-brown);
  display: block;
  margin: var(--spacing-lg) auto;
  border-radius: var(--border-radius-sm);
}

/* Espaciado */
.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

/* Sombras */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.shadow-brown { box-shadow: var(--shadow-brown); }

/* Bordes redondeados */
.rounded-sm { border-radius: var(--border-radius-sm); }
.rounded-md { border-radius: var(--border-radius-md); }
.rounded-lg { border-radius: var(--border-radius-lg); }
.rounded-xl { border-radius: var(--border-radius-xl); }
.rounded-xxl { border-radius: var(--border-radius-xxl); }
.rounded-full { border-radius: var(--border-radius-full); }

/* Transiciones */
.transition-fast { transition: var(--transition-fast); }
.transition-normal { transition: var(--transition-normal); }
.transition-slow { transition: var(--transition-slow); }

/* Estados hover */
.hover-lift:hover {
  transform: translateY(-4px);
  transition: transform var(--transition-normal);
}

.hover-shadow:hover {
  box-shadow: var(--shadow-brown-lg);
  transition: box-shadow var(--transition-normal);
}

.hover-scale:hover {
  transform: scale(1.02);
  transition: transform var(--transition-normal);
}

/* ==== RESET Y MEJORAS DE BOOTSTRAP ==== */

/* Mejorar focus states */
.btn:focus,
.form-control:focus,
.form-select:focus {
  outline: 2px solid var(--color-brown);
  outline-offset: 2px;
  box-shadow: 0 0 0 0.2rem rgba(139, 69, 19, 0.25);
}

/* Scrollbar personalizada */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-gray-bg);
  border-radius: var(--border-radius-lg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-brown-light);
  border-radius: var(--border-radius-lg);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-brown);
}

/* Selection personalizada */
::selection {
  background: var(--color-brown);
  color: var(--color-white);
}

::-moz-selection {
  background: var(--color-brown);
  color: var(--color-white);
}

/* ==== RESPONSIVE HELPERS ==== */
@media (max-width: 576px) {
  :root {
    --font-size-xxxl: 1.75rem;
  }
  
  body {
    padding-top: 70px;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .section-title::after {
    width: 60px;
    margin: var(--spacing-md) auto;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-xxxl: 3rem;
  }
}

/* ==== MODO OSCURO (PREPARACIÓN) ==== */
@media (prefers-color-scheme: dark) {
  :root {
    /* Variables para modo oscuro futuro */
    --color-bg-dark: #1a1a1a;
    --color-surface-dark: #2d2d2d;
    --color-text-dark: #ffffff;
  }
}

/* ==== ACCESIBILIDAD ==== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Focus visible para navegación por teclado */
.btn:focus-visible,
.nav-link:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-brown);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm);
}

/* ==== ANIMACIONES GLOBALES ==== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

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

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

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

/* Clases de animación */
.animate-fade-in { animation: fadeIn 0.6s ease-out; }
.animate-fade-in-up { animation: fadeInUp 0.6s ease-out; }
.animate-slide-in-left { animation: slideInLeft 0.6s ease-out; }
.animate-pulse { animation: pulse 2s infinite; }
.animate-spin { animation: spin 1s linear infinite; }

/* ==== PRINT STYLES ==== */
@media print {
  body {
    padding-top: 0;
    font-size: 12pt;
    line-height: 1.4;
    color: #000;
    background: #fff;
  }
  
  .navbar,
  .btn,
  .modal,
  .dropdown-menu {
    display: none !important;
  }
  
  .section-title::after {
    background: #000 !important;
  }
  
  a {
    color: #000;
    text-decoration: underline;
  }
}