/* ===================================
   VARIABLES Y CONFIGURACIÓN GLOBAL
   =================================== */

:root {
    /* Colores Principales - Travel Tech Premium */
    --primary: #0A1628;
    --primary-light: #1A2845;
    --primary-dark: #020814;
    
    /* Accent Colors - Viajes y Destinos */
    --accent: #00B8D4;
    --accent-dark: #0097A7;
    --accent-light: #26C6DA;
    --accent-warm: #FF6B35;
    --accent-gold: #FFB627;
    --accent-purple: #9333EA;
    
    /* Success, Warning, Danger */
    --success: #00C853;
    --warning: #FFB627;
    --danger: #FF3D00;
    
    /* Fondos */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F5F9FC;
    --bg-tertiary: #EDF3F8;
    --bg-dark: #0A1628;
    
    /* Textos */
    --text-primary: #0A1628;
    --text-secondary: #475569;
    --text-tertiary: #94A3B8;
    --text-inverse: #FFFFFF;
    
    /* Bordes */
    --border-color: #E0EBF5;
    --border-light: #EDF3F8;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    --spacing-4xl: 8rem;
    
    /* Tipografía - Modern Travel Tech */
    --font-display: 'Outfit', sans-serif;
    --font-body: 'Space Grotesk', monospace;
    
    /* Tamaños de fuente */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    --text-7xl: 4.5rem;
    
    /* Line Heights */
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --radius-2xl: 24px;
    --radius-3xl: 32px;
    --radius-full: 9999px;
    
    /* Sombras - Premium Feel */
    --shadow-xs: 0 1px 2px 0 rgba(10, 22, 40, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(10, 22, 40, 0.1), 0 1px 2px -1px rgba(10, 22, 40, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(10, 22, 40, 0.1), 0 2px 4px -2px rgba(10, 22, 40, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(10, 22, 40, 0.1), 0 4px 6px -4px rgba(10, 22, 40, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(10, 22, 40, 0.1), 0 8px 10px -6px rgba(10, 22, 40, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(10, 22, 40, 0.25);
    --shadow-accent: 0 10px 40px -10px rgba(0, 184, 212, 0.5);
    --shadow-warm: 0 10px 40px -10px rgba(255, 107, 53, 0.4);
    --shadow-gold: 0 10px 40px -10px rgba(255, 182, 39, 0.4);
    
    /* Transiciones */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-navigation: 1000;
    --z-modal-backdrop: 1500;
    --z-modal: 2000;
    --z-tooltip: 3000;
}

/* Reset y Base Styles */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
    line-height: var(--leading-normal);
    font-size: var(--text-base);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-base);
}

button {
    font-family: inherit;
    cursor: pointer;
}

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--text-tertiary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}