/* ============================================
   VARIABLES CSS - Sistema de Diseño
   ============================================ */

:root {
    /* ========== COLORES PRINCIPALES ========== */
    --color-primary: #0787be;
    --color-primary-light: #0aa8e8;
    --color-primary-dark: #056a93;
    --color-primary-alpha-50: rgba(7, 135, 190, 0.5);
    --color-primary-alpha-30: rgba(7, 135, 190, 0.3);
    --color-primary-alpha-20: rgba(7, 135, 190, 0.2);
    --color-primary-alpha-10: rgba(7, 135, 190, 0.1);
    
    /* ========== COLORES DE FONDO ========== */
    --bg-primary: #00040c;
    --bg-secondary: #0b2044;
    --bg-tertiary: #1a2a4a;
    --bg-card: rgba(0, 0, 0, 0.6);
    --bg-card-hover: rgba(0, 0, 0, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.1);
    --bg-glass-light: rgba(255, 255, 255, 0.05);
    
    /* ========== COLORES DE TEXTO ========== */
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.8);
    --text-muted: rgba(255, 255, 255, 0.6);
    --text-placeholder: rgba(255, 255, 255, 0.5);
    --text-dark: #333333;
    
    /* ========== COLORES DE ESTADO ========== */
    --color-success: #28a745;
    --color-success-alpha-20: rgba(40, 167, 69, 0.2);
    --color-warning: #ffc107;
    --color-warning-alpha-20: rgba(255, 193, 7, 0.2);
    --color-error: #dc3545;
    --color-info: #17a2b8;
    
    /* ========== BORDES ========== */
    --border-width-thin: 1px;
    --border-width-normal: 2px;
    --border-width-thick: 3px;
    --border-width-xthick: 4px;
    
    --border-color-primary: var(--color-primary);
    --border-color-secondary: var(--color-primary-alpha-50);
    --border-color-light: var(--color-primary-alpha-30);
    --border-color-dark: var(--color-primary-dark);
    
    --border-radius-sm: 5px;
    --border-radius-md: 10px;
    --border-radius-lg: 15px;
    --border-radius-xl: 30px;
    --border-radius-full: 50px;
    --border-radius-circle: 50%;
    
    /* ========== ESPACIADOS ========== */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    /* ========== TIPOGRAFÍA ========== */
    --font-family-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-family-heading: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-md: 1.125rem;   /* 18px */
    --font-size-lg: 1.25rem;    /* 20px */
    --font-size-xl: 1.5rem;     /* 24px */
    --font-size-xxl: 2rem;      /* 32px */
    --font-size-xxxl: 2.5rem;   /* 40px */
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* ========== SOMBRAS ========== */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.4);
    
    --shadow-glow-sm: 0 0 10px var(--color-primary-alpha-30);
    --shadow-glow-md: 0 0 15px var(--color-primary-alpha-50);
    --shadow-glow-lg: 0 0 25px var(--color-primary);
    
    --shadow-primary: 0 5px 15px rgba(7, 135, 190, 0.3);
    --shadow-primary-hover: 0 8px 20px rgba(7, 135, 190, 0.5);
    
    /* ========== TRANSICIONES ========== */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* ========== Z-INDEX ========== */
    --z-index-base: 1;
    --z-index-dropdown: 100;
    --z-index-sticky: 200;
    --z-index-fixed: 300;
    --z-index-modal-backdrop: 400;
    --z-index-modal: 500;
    --z-index-popover: 600;
    --z-index-tooltip: 700;
    --z-index-chat: 1000;
    
    /* ========== GRADIENTES ========== */
    --gradient-primary: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    --gradient-primary-reverse: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    --gradient-border: linear-gradient(71deg, var(--bg-primary), var(--color-primary), var(--bg-secondary));
    --gradient-button: linear-gradient(135deg, var(--bg-secondary), var(--color-primary));
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    
    /* ========== BACKDROP FILTER ========== */
    --blur-sm: blur(8px);
    --blur-md: blur(10px);
    --blur-lg: blur(15px);
    
    /* ========== ANIMACIONES ========== */
    --animation-duration-fast: 0.2s;
    --animation-duration-normal: 0.3s;
    --animation-duration-slow: 0.5s;
    
    /* ========== TAMAÑOS ========== */
    --header-height: 70px;
    --header-height-tablet: 60px;
    --header-height-mobile: 55px;
    --header-height-mobile-small: 50px;
    --footer-height: 80px;
    --chat-bubble-size: 60px;
    --chat-box-width: 350px;
    --chat-box-height: 450px;
    
    /* ========== BREAKPOINTS (para uso en JS) ========== */
    --breakpoint-sm: 576px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 992px;
    --breakpoint-xl: 1200px;
    --breakpoint-xxl: 1400px;
}

/* ========== VARIABLES COMPATIBILIDAD (Mantener existentes) ========== */
:root {
    --background: var(--bg-primary);
    --background-secondary: var(--bg-secondary);
    --text-color: var(--text-primary);
    --border-color: var(--color-primary);
    --border-color-secondary: var(--color-primary-alpha-50);
}