/* ===========================
   BASE.CSS - VARIABLES Y RESET
   =========================== */

:root {
    --vh: 1vh;
    
    /* Colores Principales */
    --primary: #1e3c72;
    --secondary: #2a5298;
    --accent: #FFD700;
    --success: #32CD32;
    --warning: #FFA500;
    --error: #FF6B6B;
    --info: #17a2b8;
    --dark: #2c3e50;
    
    /* Colores de Texto */
    --text-light: #ffffff;
    --text-dark: #333333;
    --text-muted: rgba(255, 255, 255, 0.7);
    
    /* Fondos */
    --bg-primary: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --bg-card: rgba(255, 255, 255, 0.1);
    --bg-modal: rgba(0, 0, 0, 0.5);
    
    /* Efectos */
    --border-radius: 12px;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.4);
    --transition: all 0.3s ease;
    --backdrop-filter: blur(15px);
    
    /* Espaciado */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Tipografía */
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-md: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-xxl: 32px;
}

/* Reset Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-light);
    overflow-x: hidden;
    touch-action: manipulation;
    line-height: 1.6;
    scroll-behavior: smooth;
}

html {
    scroll-behavior: smooth;
}

/* Utilidades Base */
.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Loading States */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--accent);
    animation: spin 1s ease-in-out infinite;
}

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

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

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #ffc107;
}

/* Viewport Height Fix para iOS */
.viewport-fix {
    height: 100vh;
    height: calc(var(--vh, 1vh) * 100);
}

/* Focus States */
*:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Selección de texto */
::selection {
    background: var(--accent);
    color: var(--dark);
}

/* Responsive breakpoints */
@media (max-width: 1200px) {
    .container {
        max-width: 960px;
    }
}

@media (max-width: 992px) {
    .container {
        max-width: 720px;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-md: 12px;
        --spacing-lg: 16px;
        --spacing-xl: 20px;
        --font-size-xl: 20px;
        --font-size-xxl: 28px;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
}

@media (max-width: 576px) {
    :root {
        --spacing-sm: 6px;
        --spacing-md: 10px;
        --spacing-lg: 14px;
        --font-size-lg: 16px;
        --font-size-xl: 18px;
        --font-size-xxl: 24px;
    }
}