:root {
    /* COLORES */
    --color-primary: #0d6efd;
    --color-success: #198754;
    --color-danger: #dc3545;
    --color-warning: #ffc107;
    /* FONDOS */
    --bg-main: #f5f6fa;
    --bg-card: #ffffff;
    --bg-sidebar: #1f2937;
    /* TEXTO */
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-light: #ffffff;
    /* BORDES */
    --border-radius: 10px;
    --border-color: #e5e7eb;
    /* SOMBRAS */
    --shadow-sm: 0 2px 6px rgba(0,0,0,0.05);
    --shadow-md: 0 6px 20px rgba(0,0,0,0.1);
    /* ESPACIADO */
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
}