:root {
    /* MODO OSCURO */
    --bg-primary: #050507;
    --bg-secondary: #0f1015;
    --bg-card: #15161d;
    
    --accent-cyan: #00e5ff;
    --accent-cyan-glow: rgba(0, 229, 255, 0.2);
    --accent-blue: #2962ff;
    
    --text-primary: #f8f9fa;
    --text-secondary: #caced5;
    --text-muted: #8a8d98;
    
    --border-color: rgba(255, 255, 255, 0.05);
    --input-bg: var(--bg-secondary);
    
    --font-main: 'Space Grotesk', system-ui, -apple-system, sans-serif;
    --container-width: 1250px; 
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-md: 8px;
    --radius-lg: 16px;
}

/* MODO CLARO */
body.light-mode {
    --bg-primary: #f4f5f7;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    
    --accent-cyan: #009eb3; 
    --accent-cyan-glow: rgba(0, 158, 179, 0.2);
    --accent-blue: #1e4bd8;
    
    --text-primary: #111827;
    --text-secondary: #374151;
    --text-muted: #6b7280;
    
    --border-color: rgba(0, 0, 0, 0.08);
    --input-bg: #f9fafb;
}

html { scroll-behavior: smooth; }

body {
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    font-family: var(--font-main);
    margin: 0;
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.4s ease, color 0.4s ease;
}

h1, h2, h3, h4 { color: var(--text-primary); line-height: 1.2; margin-bottom: 1rem; }
.highlight { color: var(--accent-cyan); }