/* VARIABLES DE DISEÑO Y CONFIGURACIÓN GLOBAL */

:root {
  /* Fuentes */
  --font-primary: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-secondary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Escala de Espaciado (Consistente y modular) */
  --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: 4.5rem;  /* 72px */
  --spacing-4xl: 6rem;    /* 96px */

  /* Radios de Borde */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Sombras Modernas y Difuminadas */
  --shadow-sm: 0 2px 8px -1px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 20px -5px rgba(0, 0, 0, 0.04), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.08);
  --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.04);

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

  /* Tamaños de Contenedor */
  --max-width-xs: 480px;
  --max-width-sm: 640px;
  --max-width-md: 768px;
  --max-width-lg: 1024px;
  --max-width-xl: 1280px;
  --max-width-2xl: 1440px;

  /* Escala Tipográfica (Mobile First) */
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-md: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.25rem;
  --fs-2xl: 1.5rem;
  --fs-3xl: 1.875rem;
  --fs-4xl: 2.25rem;
  --fs-5xl: 3rem;

  /* Alturas de Línea */
  --lh-tight: 1.1;
  --lh-snug: 1.25;
  --lh-normal: 1.5;
  --lh-relaxed: 1.625;
  --lh-loose: 2;

  /* Anchos de Línea / Peso */
  --fw-light: 300;
  --fw-normal: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;

  /* Índices Z (Z-Index) */
  --z-negative: -1;
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-menu: 300;
  --z-modal: 400;
  --z-toast: 500;

  /* Modo Claro - Paleta Cromática Principal */
  --bg-primary: #f8fafc;        /* Slate 50 */
  --bg-secondary: #ffffff;      /* Blanco Puro */
  --bg-tertiary: #f1f5f9;       /* Slate 100 */
  --bg-glass: rgba(255, 255, 255, 0.75);
  --border-color: #e2e8f0;      /* Slate 200 */
  --border-glass: rgba(255, 255, 255, 0.4);

  --text-primary: #0f172a;      /* Slate 900 */
  --text-secondary: #475569;    /* Slate 600 */
  --text-muted: #94a3b8;        /* Slate 400 */

  /* Colores de Marca y Acento */
  --color-primary: #0ea5e9;      /* Sky Blue 500 */
  --color-primary-hover: #0284c7;/* Sky Blue 600 */
  --color-primary-light: #e0f2fe;/* Sky Blue 100 */
  
  --color-secondary: #10b981;    /* Emerald 500 */
  --color-secondary-hover: #059669;/* Emerald 600 */
  --color-secondary-light: #d1fae5;/* Emerald 100 */

  --color-accent: #06b6d4;       /* Cyan 500 */
  --color-accent-hover: #0891b2;  /* Cyan 600 */
  --color-accent-light: #ecfeff;  /* Cyan 100 */

  --color-danger: #ef4444;       /* Red 500 */
  --color-danger-light: #fee2e2;  /* Red 100 */
  --color-success: #22c55e;      /* Green 500 */
  --color-warning: #f59e0b;      /* Amber 500 */

  /* Gradientes Modernos */
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  --gradient-eco: linear-gradient(135deg, var(--color-secondary) 0%, #10b981 100%);
  --gradient-soft: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.8) 0%, rgba(255, 255, 255, 0.4) 100%);
  --gradient-dark-text: linear-gradient(135deg, #0f172a 0%, #334155 100%);
}

/* Modo Oscuro - Variables Sobreescritas */
[data-theme="dark"] {
  --bg-primary: #030712;        /* Gray 950 */
  --bg-secondary: #0b1528;      /* Deep dark navy */
  --bg-tertiary: #0f172a;       /* Slate 900 */
  --bg-glass: rgba(11, 21, 40, 0.75);
  --border-color: #1e293b;      /* Slate 800 */
  --border-glass: rgba(255, 255, 255, 0.05);

  --text-primary: #f8fafc;      /* Slate 50 */
  --text-secondary: #cbd5e1;    /* Slate 300 */
  --text-muted: #64748b;        /* Slate 500 */

  /* Ajustes en los colores claros para modo oscuro */
  --color-primary-light: rgba(14, 165, 233, 0.15);
  --color-secondary-light: rgba(16, 185, 129, 0.15);
  --color-accent-light: rgba(6, 180, 212, 0.15);
  --color-danger-light: rgba(239, 68, 68, 0.15);

  /* Gradientes adaptados */
  --gradient-glass: linear-gradient(135deg, rgba(15, 23, 42, 0.8) 0%, rgba(15, 23, 42, 0.4) 100%);
  --gradient-dark-text: linear-gradient(135deg, #f8fafc 0%, #cbd5e1 100%);
  --gradient-soft: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
}