/* ========================================
   VARIABLES CSS - XanaTech
   Paleta de colores, tipografía, espaciado
   ======================================== */

:root {
  /* === COLORES PRIMARIOS - Vibrantes y llamativos === */
  --color-primary: #6366F1;          /* Indigo brillante - Innovación tech */
  --color-secondary: #EC4899;        /* Rosa vibrante - Creatividad */
  --color-accent: #14B8A6;           /* Turquesa brillante - Crecimiento */
  --color-highlight: #F59E0B;        /* Ámbar dorado - Destacar */
  --color-cta: #8B5CF6;              /* Violeta neón - Llamada a acción */
  
  /* === COLORES NEUTRALES - MODO OSCURO (por defecto) === */
  --color-bg-light: #0F0F1A;         /* Negro profundo con tinte */
  --color-bg-dark: #050508;          /* Negro absoluto */
  --color-text-dark: #F1F5F9;        /* Blanco suave */
  --color-text-light: #FFFFFF;       /* Blanco puro */
  --color-border: #334155;           /* Gris azulado */
  --color-bg-card: #1a1a2e;          /* Fondo de tarjetas */
  --color-bg-section: #0F0F1A;      /* Fondo de secciones */
  --color-text-secondary: rgba(255, 255, 255, 0.7);  /* Texto secundario */
  --color-text-muted: rgba(255, 255, 255, 0.5);      /* Texto muted */
  
  /* === COLORES GRADIENTES - Más vibrantes === */
  --gradient-hero: linear-gradient(135deg, #0F0F1A 0%, #1a1a2e 50%, #16213e 100%);
  --gradient-accent: linear-gradient(135deg, #6366F1 0%, #EC4899 50%, #8B5CF6 100%);
  --gradient-success: linear-gradient(135deg, #14B8A6 0%, #10B981 100%);
  --gradient-glow: linear-gradient(135deg, #6366F1, #EC4899, #F59E0B);
  --gradient-particles: linear-gradient(135deg, #6366F1, #EC4899, #14B8A6, #F59E0B);
  
  /* === TIPOGRAFÍA === */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto;
  --font-body: 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --font-mono: 'Fira Code', monospace;
  
  --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-2xl: 1.5rem;           /* 24px */
  --font-size-3xl: 1.875rem;         /* 30px */
  --font-size-4xl: 2.25rem;          /* 36px */
  --font-size-5xl: 3rem;             /* 48px */
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* === ESPACIADO === */
  --spacing-xs: 0.25rem;             /* 4px */
  --spacing-sm: 0.5rem;              /* 8px */
  --spacing-md: 1rem;                /* 16px */
  --spacing-lg: 1.5rem;              /* 24px */
  --spacing-xl: 2rem;                /* 32px */
  --spacing-2xl: 3rem;               /* 48px */
  --spacing-3xl: 4rem;               /* 64px */
  
  /* === SOMBRAS === */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 30px rgba(37, 99, 235, 0.3);
  
  /* === BORDES === */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;
  --border-radius-full: 9999px;
  
  /* === TRANSICIONES === */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
  
  /* === Z-INDEX === */
  --z-navbar: 1000;
  --z-modal: 1100;
  --z-tooltip: 1200;
  --z-cursor: 9999;
}

/* === MODO OSCURO ADICIONAL (activado por clase) === */
.dark-mode {
  --color-bg-primary: #0F0F1A;
  --color-bg-secondary: #1a1a2e;
  --color-bg-tertiary: #16213e;
  --color-text-primary: #F1F5F9;
  --color-text-secondary: rgba(255, 255, 255, 0.7);
  --color-text-muted: rgba(255, 255, 255, 0.5);
  --color-bg-light: #0F0F1A;
  --color-bg-dark: #050508;
  --color-text-dark: #F1F5F9;
  --color-text-light: #FFFFFF;
  --color-border: #334155;
  --color-bg-card: #1a1a2e;
  --color-bg-section: #0F0F1A;
  --gradient-hero: linear-gradient(135deg, #0F0F1A 0%, #1a1a2e 50%, #16213e 100%);
}

/* === MODO CLARO (activado por clase) === */
.light-mode {
  /* === COLORES NEUTRALES - MODO CLARO === */
  --color-bg: #F8FAFC;
  --color-bg-light: #F8FAFC;
  --color-bg-dark: #050508;
  --color-bg-secondary: #E2E8F0;
  --color-bg-tertiary: #CBD5E1;
  --color-text-primary: #0F172A;
  --color-text-dark: #0F172A;
  --color-text-light: #FFFFFF;
  --color-border: #CBD5E1;
  --color-bg-card: #FFFFFF;
  --color-bg-section: #F8FAFC;
  --color-text-secondary: #475569;
  --color-text-muted: #64748B;
  
  /* === COLORES GRADIENTES - MODO CLARO === */
  --gradient-hero: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #334155 100%);
  --gradient-accent: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
}